EP0805719B1 - Pompe a clapet d'admission monobloc et ensemble de moulage d'un tel clapet - Google Patents
Pompe a clapet d'admission monobloc et ensemble de moulage d'un tel clapet Download PDFInfo
- Publication number
- EP0805719B1 EP0805719B1 EP96901398A EP96901398A EP0805719B1 EP 0805719 B1 EP0805719 B1 EP 0805719B1 EP 96901398 A EP96901398 A EP 96901398A EP 96901398 A EP96901398 A EP 96901398A EP 0805719 B1 EP0805719 B1 EP 0805719B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- pump
- base ring
- pump chamber
- plunger member
- 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
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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
- B05B11/1042—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
Definitions
- the present invention relates to a pump for dispensing fluid products, comprising a pump chamber in communication with a fluid reservoir via an intake channel, said chamber being provided with a valve adapted to isolate the pump chamber from said tank during the distribution of the fluid product.
- the invention relates more particularly to said intake valve.
- inlet valves intended for use in small pumps.
- a classic form is to trap a ball or a washer in a housing formed at the outlet of the intake channel.
- the ball or the washer is pressed against a valve seat formed at the mouth of the intake channel.
- the pump chamber is isolated from the tank during distribution of the fluid.
- the ball or washer is detached from its seat, undergoes turbulence of the flow and floats inside the housing provided for this purpose.
- the housing can be an integral part of the pump body, in which case it you must provide a mold with a complex imprint. Housing can also be formed by an insert in the pump body. Again, a specific mold is necessary. We see that the need for a housing to confine the ball or the washer in a limited volume creates complexity in terms of molding. In addition, an operation subsequent assembly is necessary to introduce the ball or washer into said housing.
- One of the objects of the present invention is to provide an intake valve which does not not require the formation of a housing capable of accommodating a free valve member such than a ball or a washer.
- the inlet valve must be able to be mounted in a body single pump without special structure.
- Another type of intake valve implements a needle located at the end lower of the actuating rod and which is intended to close off the intake channel when the actuation rod is pressed.
- This is a very special type of valve, since there is interaction between the pump body and the actuating rod to achieve the inlet valve function. Indeed, this valve can only exist in a precompression in which the piston is slidably mounted on the actuating rod. This valve cannot therefore be used universally on any type of pump.
- Another particular type of intake valve is used in precompression using the overpressure prevailing in the pump chamber to take off a needle from its seat and thus create an outlet passage for the fluid.
- the needle is in tight support in the fluid delivery channel under the action of a spring.
- the needle extends downwards and forms a skirt which is intended to be fitted onto a sleeve integral with the pump body. The engagement of the skirt and the sleeve fills the role of intake valve. Again, this is a special valve for specific use.
- Another object of the present invention is to provide an intake valve capable of to be fitted in most pumps and which does not involve a dynamic these.
- valve in which the valve member is applied with a certain prestress on his seat. This allows the tank to be isolated from the pump even when the pump is at rest.
- European patent EP-0 377 536 discloses a such an intake valve. This includes a flexible flat seal and a valve holder with a internal relief which presses on the edge of the joint and tends to position it in the position sealing with preload. During the fluid suction phase, the flat seal flexes and clears a passage for the fluid. As soon as the suction is finished, the seal returns to the initial position of support on its seat.
- This valve variant is somewhat similar to the one using a washer, except that the seal is constrained by the valve holder and cannot therefore do not float freely in the housing defined by the valve holder.
- valve presents the disadvantage that its installation in a pump body is difficult since the valve holder must perfectly cover the gasket without crushing it too much and without leaving it free. he there is also a problem with the centering of the seal during assembly, because the valve holder must surround the seal with its base intended to come into abutment at the bottom of the pump body.
- Another object of the present invention is to provide a one-piece intake valve in which the valve member is prestressed on its valve seat.
- the valve forms a whole which is easily insertable into a pump body. Prestressing is provided by the valve itself and no longer by cooperation with another pump member.
- the valve seat is formed by the crown of based.
- the valve here is completely autonomous and no longer depends on the structure surrounding.
- the base crown is fixedly held in the chamber pump by a return spring which bears thereon.
- the base crown is formed with a ring on which said elastic means are fixed, said ring not being connected to the remainder of the crown only by a bridge of material so that the ring and its needle organ elastically connected are articulated with respect to the rest of the base crown.
- the elastic means are elastic tabs extending substantially helically between the base crown and the needle organ.
- the invention also defines a molding assembly for molding a valve of admission, characterized in that it comprises two halves of different molds, a first mold half having an imprint corresponding to the negative of the lower part of the base crown and the upper part of the organ of needle and ring, and a second mold half with an imprint corresponding to the negative of the upper part of the base crown and of the part of the needle body and the ring, the base crown and the ring to which is fixed the needle organ being molded head to tail side by side with the material bridge defining a communication channel between them.
- a molding assembly for molding a valve of admission, characterized in that it comprises two halves of different molds, a first mold half having an imprint corresponding to the negative of the lower part of the base crown and the upper part of the organ of needle and ring, and a second mold half with an imprint corresponding to the negative of the upper part of the base crown and of the part of the needle body and the ring, the base crown and the ring to which is fixed the needle organ being molded head
- Figure 1 shows the valve in its final state of use
- Figure 2 shows the valve seen from above in its initial state just out of the mold.
- a base crown 1 is formed of a substantially cylindrical part at the end lower of which extends a flange 10 inwards.
- the collar has a reinforced inner periphery 11 defining a surface 111 preferably rounded. We will see below that this surface 111 acts as a seat for the needle member 2.
- the upper end of the crown cylinder part has a periphery substantially uniform, except for one of the diametrically opposite points. At one of these points, said crown l is connected to a ring 12 by means of a material bridge 13. In the other point, the crown defines a housing 14 adapted to receive a tooth 14 'formed at the outer periphery of the ring 12.
- the housing 14 is formed on a part of the periphery of the base crown by a peripheral buttress 15 in which part of the outer periphery of the ring 12 is inserted. Tooth 14 'then presents itself rather in the form of a peripheral outgrowth which extends over part of the outer periphery of the ring corresponding to the buttress 15.
- the ring 12 is materially secured to the crown 1 only by the bridge of material 13 which thus constitutes a point of articulation around which the ring can pivot on the crowned.
- the engagement housing 14 / protuberance 14 ′ therefore ensures a solid fixing of the ring on the crown.
- said commitment housing / growth is essential, due to the valve molding technique.
- the click-in effect of this commitment housing / outgrowth is only one simple and effective means among others.
- the ring 12 is fixedly mounted on the crown 1.
- Des elastic tabs 21 extend from the inner periphery of the ring inward to join the needle member 2.
- the legs 21 also extend helically to allow vertical movement of the needle member. In the rest position, the needle member rests with an external peripheral surface against the surface 111 defined on crown 1. The contact between these two surfaces is waterproof, even in position of rest because the needle member is slightly prestressed on its valve seat 111.
- This state of prestressing of the valve comes from the molding technique.
- This valve such as shown in Figure 1, can not be molded as is.
- the valve is molded flat as shown in FIG. 2.
- the crown 1 on the one hand, and the ring 12, the elastic tabs 21 and the needle member 2, on the other hand, are molded side by side, head to tail, only the material bridge 13 connecting them.
- the valve presents itself as in figure 2.
- a further folding operation is necessary to bring the valve in its final state of use.
- the two lines A-A represent the axis of symmetry of the flap, which once folded, overlap. Prestressing is generated after latching of the ring on the crown.
- valve is fully autonomous, in the sense that it incorporates all the necessary functions of a valve of admission.
- crown l defines the valve seat 111. This characteristic is advantageous, because the pump body can thus be produced with greater tolerances, since the valve seat is incorporated in the valve.
- the valve according to this second embodiment is also easily moldable.
- the necessary molding assembly only comprises two different mold halves, a first half of the mold having an imprint corresponding to the negative of the part lower part of the base crown and the upper part of the needle body and the ring, and a second mold half having an imprint corresponding to the negative of the upper part of the base crown and the lower part of the needle body and of the ring, the base crown and the ring to which the needle member is fixed being molded head to tail side by side with the material bridge defining a communication channel between them.
Landscapes
- Check Valves (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
- une couronne de base montée fixement dans la chambre de pompe circonférentiellement audit canal d'admission,
- un siège de clapet,
- un organe de pointeau déplaçable élastiquement entre une position de repos dans laquelle ledit organe de pointeau est en contact étanche avec le siège de clapet et une position d'admission dans laquelle un passage est établi entre le réservoir et la chambre de pompe, et
- des moyens élastiques reliant la couronne de base à l'organe de pointeau et sollicitant ce dernier par précontrainte élastique en position de repos contre le siège de clapet.
- la figure 1 est une vue en coupe d'une forme de réalisation d'un clapet d'admission, et
- la figure 2 représente à la fois une vue en plan et en coupe du clapet de la figure 1 à l'état encore non replié.
Claims (6)
- Pompe pour la distribution de produits fluides, comprenant une chambre de pompe en communication avec un réservoir de produit fluide par l'intermédiaire d'un canal d'admission, ladite chambre de pompe étant pourvue d'un clapet d'admission adapté à isoler la chambre de pompe dudit réservoir lors de la distribution du produit fluide, caractérisé en ce que ledit clapet d'admission est formé en une seule pièce intégrant au moins les organes suivants :une couronne de base (1) montée fixement dans la chambre de pompe circonférentiellement audit canal d'admission,un siège de clapet (111),un organe de pointeau (2) déplaçable élastiquement entre une position de repos dans laquelle ledit organe de pointeau (2) est en contact étanche avec le siège de clapet (111) et une position d'admission dans laquelle un passage est établi entre le réservoir et la chambre de pompe, etdes moyens élastiques (21) reliant la couronne de base (1) à l'organe de pointeau (2) et sollicitant ce dernier par précontrainte élastique en position de repos contre le siège de clapet (111).
- Pompe selon la revendication 1, dans laquelle le siège de clapet est formé par une surface de contact (111) définie par la couronne de base (1).
- Pompe selon l'une quelconque des revendications précédentes, dans laquelle la couronne de base (1) est maintenue fixement dans la chambre de pompe par un ressort de rappel qui prend appui sur celle-ci.
- Pompe selon l'une quelconque des revendications précédentes, dans laquelle la couronne de base (1) est formée avec une bague (12) sur lequel lesdits moyens élastiques (21) sont fixés, ladite bague n'étant reliée au restant de la couronne (1) que par un pont de matière (13) de sorte que la bague (12) et son organe de pointeau (2) élastiquement relié sont articulés par rapport au restant de la couronne de base (1).
- Pompe selon l'une quelconque des revendications précédentes, dans laquelle les moyens élastiques sont des pattes élastiques (21) s'étendant sensiblement hélicoïdalement entre la couronne de base (1) et l'organe de pointeau (2).
- Ensemble de moulage pour mouler un clapet d'admission selon l'une quelconque des revendications 4 ou 5 précédentes, caractérisé en ce qu'il comprend deux moitiés de moule différentes, une première moitié de moule présentant une empreinte correspondant au négatif de la partie inférieure de la couronne de base et de la partie supérieure de l'organe de pointeau et de la bague, et une seconde moitié de moule présentant une empreinte correspondant au négatif de la partie supérieure de la couronne de base et de la partie inférieure de l'organe de pointeau et de la bague, la couronne de base et la bague à laquelle est fixé l'organe de pointeau étant moulées tête-bêche côte à côte avec le pont de matière définissant un canal de communication entre elles.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9500526A FR2729436B1 (fr) | 1995-01-18 | 1995-01-18 | Pompe a clapet d'admission monobloc et ensemble de moulage d'un tel clapet |
FR9500526 | 1995-01-18 | ||
PCT/FR1996/000068 WO1996022163A1 (fr) | 1995-01-18 | 1996-01-16 | Pompe a clapet d'admission monobloc et ensemble de moulage d'un tel clapet |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0805719A1 EP0805719A1 (fr) | 1997-11-12 |
EP0805719B1 true EP0805719B1 (fr) | 1998-10-07 |
Family
ID=9475239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96901398A Expired - Lifetime EP0805719B1 (fr) | 1995-01-18 | 1996-01-16 | Pompe a clapet d'admission monobloc et ensemble de moulage d'un tel clapet |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0805719B1 (fr) |
JP (1) | JPH10512488A (fr) |
DE (1) | DE69600760T2 (fr) |
FR (1) | FR2729436B1 (fr) |
WO (1) | WO1996022163A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9626960D0 (en) | 1996-12-27 | 1997-02-12 | Glaxo Group Ltd | Valve for aerosol container |
JP7129200B2 (ja) * | 2018-04-17 | 2022-09-01 | 日本クロージャー株式会社 | 容器蓋 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4485943A (en) * | 1982-03-08 | 1984-12-04 | Joachim Czech | Dispenser for liquids or pasty products |
US4618077A (en) * | 1984-03-07 | 1986-10-21 | Corsette Douglas Frank | Liquid dispensing pump |
DE4041135C2 (de) * | 1990-12-21 | 1994-10-20 | Andris Raimund Gmbh & Co Kg | Ansaug- oder Ausgabeventil für eine Dosier- und Spraypumpe zur Abgabe flüssiger, niederviskoser und pastöser Stoffe |
-
1995
- 1995-01-18 FR FR9500526A patent/FR2729436B1/fr not_active Expired - Fee Related
-
1996
- 1996-01-16 WO PCT/FR1996/000068 patent/WO1996022163A1/fr active IP Right Grant
- 1996-01-16 DE DE69600760T patent/DE69600760T2/de not_active Expired - Fee Related
- 1996-01-16 EP EP96901398A patent/EP0805719B1/fr not_active Expired - Lifetime
- 1996-01-16 JP JP8522081A patent/JPH10512488A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE69600760D1 (de) | 1998-11-12 |
FR2729436B1 (fr) | 1997-04-04 |
EP0805719A1 (fr) | 1997-11-12 |
DE69600760T2 (de) | 1999-06-10 |
JPH10512488A (ja) | 1998-12-02 |
FR2729436A1 (fr) | 1996-07-19 |
WO1996022163A1 (fr) | 1996-07-25 |
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