EP1613539A1 - Push button pertaining to a spray - Google Patents

Push button pertaining to a spray

Info

Publication number
EP1613539A1
EP1613539A1 EP04726505A EP04726505A EP1613539A1 EP 1613539 A1 EP1613539 A1 EP 1613539A1 EP 04726505 A EP04726505 A EP 04726505A EP 04726505 A EP04726505 A EP 04726505A EP 1613539 A1 EP1613539 A1 EP 1613539A1
Authority
EP
European Patent Office
Prior art keywords
push button
face
button according
parts
extending
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.)
Granted
Application number
EP04726505A
Other languages
German (de)
French (fr)
Other versions
EP1613539B1 (en
Inventor
Jean-Louis Bougamont
Jean-Pierre Songbe
Hervé IMENEZ
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.)
Silgan Dispensing Systems Le Treport SAS
Original Assignee
Rexam Dispensing Systems 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 Rexam Dispensing Systems SAS filed Critical Rexam Dispensing Systems SAS
Publication of EP1613539A1 publication Critical patent/EP1613539A1/en
Application granted granted Critical
Publication of EP1613539B1 publication Critical patent/EP1613539B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
    • B65D83/20—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • 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

Definitions

  • the invention relates to a sprayer push button with lateral spray outlet and relates more particularly to an improvement making it possible to simplify the structure of this element and in particular to reduce the number of parts constituting it.
  • the invention also relates to any sprayer with manual actuation provided with a pump comprising such a push button.
  • Patent FR 2 095 836 describes a push button with lateral spray outlet, mainly composed of two molded plastic parts, respectively an inner part and an outer part forming a cap, generally coaxial and nested one inside the other.
  • the inner part is connected to the end of a pump outlet tube. It is simply forced onto it so that the entire push button is carried by the pump outlet tube.
  • the latter is itself mounted in the neck of a bottle containing the product to be sprayed.
  • the swirl chamber is produced by molding by printing an imprint on the internal lateral surface of the external part by means of an internal mechanism of the external part by means of a necessarily large matrix mechanism. and expensive, difficult to implement and very penalizing from the point of view of the production rate.
  • the size of the mechanism called upon to engage inside said external part makes this process inapplicable to the manufacture of a push button of small dimensions.
  • the invention provides a solution to this set of problems.
  • the basic idea of the invention consists in defining the essential elements of the swirl chamber by an imprint formed during molding on the internal face of the external part, around the internal orifice of the conduit for ejecting the sprayed liquid, without having to use any matrix mechanism movable transversely inside of the mold but by ensuring that the demolding of said external part can be done "in the axis" without damaging the imprint.
  • the invention relates to a sprayer push button with lateral spray outlet of the type comprising a swirl chamber with central outlet and peripheral inlet, arranged between two molded parts, generally coaxial, respectively an interior part and an exterior part, these two parts being nested one inside the other, and an imprint forming part of said swirl chamber being defined inside said external part which further comprises an ejection duct extending through its wall from the center of said cavity, characterized in that said two parts have faces inclined with respect to their common interlocking axis, pressing against one another, in that said cavity is formed on the inclined face of said external part and in that said inclined faces are oriented in one direction and at a sufficient angle, capable of making it possible to demold said external part along said common axis without damaging said imprint.
  • the angle () defined above must be greater than 20 °, preferably between 30 ° and 50 °.
  • the inclined faces of the two parts are frustoconical, which makes any indexing superfluous since the swirl chamber is entirely defined by the imprint made on the internal face of the external part and by the part of frustoconical wall of the external face of the interior part coming to apply opposite this imprint.
  • an annular shoulder can be provided at the end of said interior part, extending between an end face of this part and said frustoconical face, which has the effect of defining, with the outer part, an annular supply chamber.
  • the interior part comprises an axial duct in which the liquid to be sprayed is discharged by the pump.
  • This axial duct opens out at the center of the end face of the internal part and at least one transverse passage is defined between said end face and the internal face opposite the external part.
  • This transverse passage extends between the axial duct and the annular supply chamber.
  • it is defined by at least one groove or rib coming from molding with the interior part and extending over the end face of the latter.
  • the transverse passage is thus defined between the two end faces opposite the external part and the internal part.
  • a comparable arrangement defined on the internal face of the external part would make it possible to define the transverse passage.
  • the inner part forms a kind of support which is force-fitted at the end of the outlet tube of the manually actuated pump, while the outer part forms a kind of decorative cap covering the support.
  • FIG. 1 is an elevational and sectional view of the push button mounted at the end of a manually actuated pump
  • FIG. 2 is a detailed perspective view of the interior of the outer part, showing the imprint of the swirl chamber
  • FIG. 3 is a perspective view of one of the elements of the mold of said outer part.
  • a sprayer 11 comprising a bottle 12 in the mouth of which is installed a pump 13 with manual actuation conventionally comprising an outlet tube 14 through which the pressurized liquid is expelled when the tube is pushed in via a push button 15 which is itself installed at the end of this tube.
  • the push-button 15 comprises only two parts, namely an internal part 17 which is force fitted at the end of the outlet tube 14 and an external part 19 covering the internal part and forming a sort of decorative cap.
  • the inner part 17 constitutes the support of the outer part.
  • the two parts are made of molded plastic and are generally coaxial, their common axis yy confusing with that of the outlet tube 14, when the push-button is installed at the end of the latter.
  • the two parts are nested one inside the other along the yy axis, without indexing.
  • the interior part 17 comprises an axial duct 20 opening out at the center of an end face 22 thereof, perpendicular to the axis.
  • the end of the axial duct which is remote from this end face has a widening 24, defining a shoulder 25, suitable for accommodating the end of the outlet tube 14, the assembly being effected by force fitting.
  • At least one transverse passage is defined between the end face 22 of the internal part and the internal face 27 opposite the external part 19. This transverse passage extends between the axial duct 20 and an annular supply chamber 30 defined between the two pieces. More specifically, the interior part comprises an annular shoulder 32 defined at the periphery of the end face 22 and extending opposite the internal face of the exterior part. It is clear that the axial duct 20 communicates with the transverse passage 26 which itself opens into said annular supply chamber 30. Consequently, the liquid discharged by the pump invades this annular supply chamber.
  • the end face of the interior part comprises at least one groove or rib 29, molded and defining the transverse passage 26 between the faces 22 and 27, opposite.
  • the two parts 17, 19 have faces 34, 36 inclined relative to their common axis and applying one against the other.
  • the internal inclined face 34 of the external part 19 carries an imprint 38 defining the major part of a swirl chamber 39.
  • the latter is closed by the external inclined face 36 of the internal part 17.
  • the swirl chamber communicates with said annular supply chamber 30, as can be seen in FIG. 1.
  • an ejection conduit 40 for the sprayed liquid extends through the wall of the external part 19; it opens internally at the center of said cavity 38.
  • the ejection duct is perpendicular to the common axis of the two parts; it could also be perpendicular to the inclined face in which the impression is made.
  • inclined face is meant more precisely a surface whose section passing through the common axis yy forms an acute angle oc with this axis whose apex is outside and “forward" relative to the end face 22 or 27 perpendicular to this axis.
  • This type of inclination is favorable for demolding "in the axis" of the external part comprising the imprint, without deterioration of the latter.
  • the angle has a value of at least 20 °, approximately, it is preferably chosen between 30 ° and 50 °.
  • the inclined faces in contact 34, 36 of the two parts are frustoconical, which allows mounting without indexing.
  • Figures 2 and 3 provide a better understanding of the structure of the imprint 38 and its ability to be demolded easily "in the axis".
  • the cavity comprises a recess with a circular contour 42, concave, or even frustoconical, centered on the internal orifice 43 of the ejection duct 40, two grooves 44 extending substantially parallel to a generator of the frustoconical surface 34, on either side of said recess and two channels 46, 48 extending respectively between said recess and each groove 44.
  • each channel 46, 48 opens substantially tangentially into the recess at substantially diametrically opposite points.
  • each channel 46, 48 has two flanks with a V section. In the example, the angle of the two flanks is 90 °.
  • One of the flanks extends substantially perpendicular to the common axis y-y, while the other extends substantially over a cylindrical surface centered on this axis.
  • the channel 48 furthest from the annular chamber 30 has a larger section than the other channel 46. This difference in section allows to rebalance the swirl of liquid in the chamber 39 although the outlet conduit 40 is not "perpendicular" to said chamber since it is on the contrary perpendicular to the axis yy.
  • FIG. 3 illustrates more particularly the element 50 of the mold which carries in relief the structural elements intended to constitute the imprint 38.
  • Two ribs 46a, 48a intended to form the channels 46, 48 extend between this frustoconical projection and the ribs 44a.
  • the rib 48a has a larger section than the rib 46a.

Abstract

The push-button is made up of two parts which fit into each other and define between them a whirl chamber, a part of which is formed by a cavity (38) defined inside the outer part on a face of the latter that is tilted in a direction and at a sufficient angle (∝), suitable for making it possible to remove the outer part from the mould "along the axis" without damaging the cavity.

Description

Bouton-poussoir de pulvérisateur Sprayer push button
L'invention se rapporte à un bouton-poussoir de pulvérisateur à sortie de pulvérisation latérale et concerne plus particulièrement un perfectionnement permettant de simplifier la structure de cet élément et notamment de réduire le nombre de pièces le constituant. L'invention vise également tout pulvérisateur à actionnement manuel muni d'une pompe comprenant un tel bouton-poussoir.The invention relates to a sprayer push button with lateral spray outlet and relates more particularly to an improvement making it possible to simplify the structure of this element and in particular to reduce the number of parts constituting it. The invention also relates to any sprayer with manual actuation provided with a pump comprising such a push button.
Dans le domaine des pulvérisateurs à actionnement manuel, il est classique d'agencer une chambre de tourbillonnement dans le bouton-poussoir, immédiatement en amont du conduit d'éjection de liquide pulvérisé. Cette chambre de tourbillonnement à entrée périphérique et sortie centrale, communiquant avec ledit conduit d'éjection, a pour fonction de mettre le liquide expulsé par la pompe, en circulation rotative tourbillonnaire juste avant son éjection, ce qui provoque la pulvérisation.In the field of manually actuated sprayers, it is conventional to arrange a swirl chamber in the push-button, immediately upstream of the sprayed liquid ejection conduit. This swirl chamber with peripheral inlet and central outlet, communicating with said ejection conduit, has the function of putting the liquid expelled by the pump, in rotary vortex circulation just before its ejection, which causes spraying.
Le brevet FR 2 095 836 décrit un bouton-poussoir à sortie de pulvérisation latérale, composé principalement de deux pièces en matière plastique moulée, respectivement une pièce intérieure et une pièce extérieure formant coiffe, globalement coaxiales et emboîtées l'une dans l'autre. La pièce intérieure est raccordée à l'extrémité d'un tube de sortie de la pompe. Il est simplement emboîté à force sur celui-ci de sorte que l'ensemble du bouton- poussoir est porté par le tube de sortie de la pompe. Cette dernière est elle- même montée dans le col d'un flacon renfermant le produit à pulvériser.Patent FR 2 095 836 describes a push button with lateral spray outlet, mainly composed of two molded plastic parts, respectively an inner part and an outer part forming a cap, generally coaxial and nested one inside the other. The inner part is connected to the end of a pump outlet tube. It is simply forced onto it so that the entire push button is carried by the pump outlet tube. The latter is itself mounted in the neck of a bottle containing the product to be sprayed.
Dans ce bouton-poussoir, la chambre de tourbillonnement est réalisée au moulage par impression d'une empreinte à la surface latérale interne de la pièce extérieure au moyen d'un mécanisme interne de la pièce extérieure au moyen d'un mécanisme de matrice nécessairement volumineux et coûteux, difficile à mettre en œuvre et très pénalisant du point de vue de la cadence de production. En outre, l'encombrement du mécanisme appelé à s'engager à l'intérieur de ladite pièce extérieure, rend ce procédé inapplicable à la fabrication d'un bouton-poussoir de petites dimensions. L'invention apporte une solution à cer ensemble de problèmes.In this push button, the swirl chamber is produced by molding by printing an imprint on the internal lateral surface of the external part by means of an internal mechanism of the external part by means of a necessarily large matrix mechanism. and expensive, difficult to implement and very penalizing from the point of view of the production rate. In addition, the size of the mechanism called upon to engage inside said external part, makes this process inapplicable to the manufacture of a push button of small dimensions. The invention provides a solution to this set of problems.
L'idée de base de l'invention consiste à définir les éléments essentiels de la chambre de tourbillonnement par une empreinte formée au moulage sur la face interne de la pièce extérieure, autour de l'orifice intérieur du conduit d'éjection du liquide pulvérisé, sans avoir recours à un quelconque mécanisme de matrice mobile transversalement à l'intérieur du moule mais en faisant en sorte que le démoulage de ladite pièce extérieure puisse se faire "dans l'axe" sans pour autant endommager l'empreinte.The basic idea of the invention consists in defining the essential elements of the swirl chamber by an imprint formed during molding on the internal face of the external part, around the internal orifice of the conduit for ejecting the sprayed liquid, without having to use any matrix mechanism movable transversely inside of the mold but by ensuring that the demolding of said external part can be done "in the axis" without damaging the imprint.
Plus précisément, l'invention concerne un bouton-poussoir de pulvérisateur à sortie de pulvérisation latérale du type comportant une chambre de tourbillonnement à sortie centrale et entrée périphérique, agencée entre deux pièces moulées, globalement coaxiales, respectivement une pièce intérieure et une pièce extérieure, ces deux pièces étant emboîtées l'une dans l'autre, et une empreinte faisant partie de ladite chambre de tourbillonnement étant définie à l'intérieur de ladite pièce extérieure laquelle comporte en outre un conduit d'éjection s'etendant au travers de sa paroi à partir du centre de ladite empreinte, caractérisé en ce que lesdites deux pièces comportent des faces inclinées par rapport à leur axe commun d'emboîtement, Rappliquant l'une contre l'autre, en ce que ladite empreinte est pratiquée sur la face inclinée de ladite pièce extérieure et en ce que lesdites faces inclinées sont orientées dans un sens et selon un angle suffisant, propres à rendre possible un démoulage de ladite pièce extérieure selon ledit axe commun sans endommager ladite empreinte. Dans la pratique, l'angle ( ) défini ci-dessus, doit être supérieur à 20°, de préférence compris entre 30° et 50°.More specifically, the invention relates to a sprayer push button with lateral spray outlet of the type comprising a swirl chamber with central outlet and peripheral inlet, arranged between two molded parts, generally coaxial, respectively an interior part and an exterior part, these two parts being nested one inside the other, and an imprint forming part of said swirl chamber being defined inside said external part which further comprises an ejection duct extending through its wall from the center of said cavity, characterized in that said two parts have faces inclined with respect to their common interlocking axis, pressing against one another, in that said cavity is formed on the inclined face of said external part and in that said inclined faces are oriented in one direction and at a sufficient angle, capable of making it possible to demold said external part along said common axis without damaging said imprint. In practice, the angle () defined above must be greater than 20 °, preferably between 30 ° and 50 °.
Avantageusement, les faces inclinées des deux pièces sont tronconiques, ce qui rend tout indexage superflu puisque la chambre de tourbillonnement est définie entièrement par l'empreinte pratiquée à la face interne de la pièce extérieure et par la partie de paroi tronconique de la face externe de la pièce intérieure venant s'appliquer en regard de cette empreinte.Advantageously, the inclined faces of the two parts are frustoconical, which makes any indexing superfluous since the swirl chamber is entirely defined by the imprint made on the internal face of the external part and by the part of frustoconical wall of the external face of the interior part coming to apply opposite this imprint.
Pour l'alimentation de ladite chambre de tourbillonnement, on peut prévoir un épaulement annulaire à l'extrémité de ladite pièce intérieure, s'etendant entre une face d'extrémité de cette pièce et ladite face tronconique, ce qui a pour effet de définir, avec la pièce extérieure, une chambre d'alimentation annulaire. Par ailleurs, la pièce intérieure comporte un conduit axial dans lequel le liquide à pulvériser est refoulé par la pompe. Ce conduit axial débouche au centre de la face d'extrémité de la pièce intérieure et au moins un passage transversal est défini entre ladite face d'extrémité et la face interne en regard de la pièce extérieure. Ce passage transversal s'étend entre le conduit axial et la chambre d'alimentation annulaire. De préférence, il est défini par au moins une cannelure ou nervure venue de moulage avec la pièce intérieure et s'etendant sur la face d'extrémité de celle-ci. Le passage transversal est ainsi défini entre les deux faces d'extrémité en regard de la pièce extérieure et de la pièce intérieure. Bien entendu, un agencement comparable défini à la face interne de la pièce extérieure permettrait de définir le passage transversal.For supplying said swirl chamber, an annular shoulder can be provided at the end of said interior part, extending between an end face of this part and said frustoconical face, which has the effect of defining, with the outer part, an annular supply chamber. Furthermore, the interior part comprises an axial duct in which the liquid to be sprayed is discharged by the pump. This axial duct opens out at the center of the end face of the internal part and at least one transverse passage is defined between said end face and the internal face opposite the external part. This transverse passage extends between the axial duct and the annular supply chamber. Preferably, it is defined by at least one groove or rib coming from molding with the interior part and extending over the end face of the latter. The transverse passage is thus defined between the two end faces opposite the external part and the internal part. Of course, a comparable arrangement defined on the internal face of the external part would make it possible to define the transverse passage.
Classiquement, la pièce intérieure forme une sorte de support emboîté à force à l'extrémité du tube de sortie de la pompe à actionnement manuel, tandis que la pièce extérieure forme une sorte de coiffe décorative venant recouvrir le support.Conventionally, the inner part forms a kind of support which is force-fitted at the end of the outlet tube of the manually actuated pump, while the outer part forms a kind of decorative cap covering the support.
L'invention sera mieux comprise et d'autres avantages de celle- ci apparaîtront plus clairement à la lumière de la description qui va suivre d'un bouton-poussoir conforme à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés, dans lesquels :The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of a push button conforming to its principle, given solely by way of example and made with reference to annexed drawings, in which:
- la figure 1 est une vue en élévation et en coupe du bouton- poussoir monté à l'extrémité d'une pompe à actionnement manuel ;- Figure 1 is an elevational and sectional view of the push button mounted at the end of a manually actuated pump;
- la figure 2 est une vue de détail en perspective de l'intérieur de la pièce extérieure, montrant l'empreinte de la chambre de tourbillonnement ; et- Figure 2 is a detailed perspective view of the interior of the outer part, showing the imprint of the swirl chamber; and
- la figure 3 est une vue en perspective de l'un des éléments du moule de ladite pièce extérieure.- Figure 3 is a perspective view of one of the elements of the mold of said outer part.
En considérant plus particulièrement la figure 1, on voit la partie supérieure d'un pulvérisateur 11 comprenant un flacon 12 dans l'embouchure duquel se trouve installée une pompe 13 à actionnement manuel comportant classiquement un tube de sortie 14 par lequel le liquide sous pression est expulsé lorsque le tube est enfoncé par l'intermédiaire d'un bouton-poussoir 15 qui est lui-même installé à l'extrémité de ce tube.Considering more particularly FIG. 1, we see the upper part of a sprayer 11 comprising a bottle 12 in the mouth of which is installed a pump 13 with manual actuation conventionally comprising an outlet tube 14 through which the pressurized liquid is expelled when the tube is pushed in via a push button 15 which is itself installed at the end of this tube.
Le bouton-poussoir 15 comporte seulement deux pièces, à savoir une pièce intérieure 17 emboîtée à force à l'extrémité du tube de sortie 14 et une pièce extérieure 19 recouvrant la pièce intérieure et formant une sorte de coiffe décorative. La pièce intérieure 17 constitue le support de la pièce extérieure. Les deux pièces sont en matière plastique moulée et sont globalement coaxiales, leur axe commun y-y se confondant avec celui du tube de sortie 14, lorsque le bouton-poussoir est installé à l'extrémité de celui-ci. Les deux pièces sont emboîtées l'une dans l'autre selon l'axe y-y, sans indexage. De façon classique, la pièce intérieure 17 comporte un conduit axial 20 débouchant au centre d'une face d'extrémité 22 de celle-ci, perpendiculaire à l'axe. L'extrémité du conduit axial qui est éloignée de cette face d'extrémité comporte un élargissement 24, définissant un épaulement 25, propre à accueillir l'extrémité du tube de sortie 14, le montage se faisant par emboîtement à force. Au moins un passage transversal est défini entre la face d'extrémité 22 de la pièce intérieure et la face interne 27 en regard de la pièce extérieure 19. Ce passage transversal s'étend entre le conduit axial 20 et une chambre d'alimentation annulaire 30 définie entre les deux pièces. Plus précisément, la pièce intérieure comporte un épaulement annulaire 32 défini à la périphérie de la face d'extrémité 22 et s'etendant en regard de la face interne de la pièce extérieure. Il est clair que le conduit axial 20 communique avec le passage transversal 26 qui débouche lui-même dans ladite chambre d'alimentation annulaire 30. Par conséquent, le liquide refoulé par la pompe envahit cette chambre d'alimentation annulaire.The push-button 15 comprises only two parts, namely an internal part 17 which is force fitted at the end of the outlet tube 14 and an external part 19 covering the internal part and forming a sort of decorative cap. The inner part 17 constitutes the support of the outer part. The two parts are made of molded plastic and are generally coaxial, their common axis yy confusing with that of the outlet tube 14, when the push-button is installed at the end of the latter. The two parts are nested one inside the other along the yy axis, without indexing. Conventionally, the interior part 17 comprises an axial duct 20 opening out at the center of an end face 22 thereof, perpendicular to the axis. The end of the axial duct which is remote from this end face has a widening 24, defining a shoulder 25, suitable for accommodating the end of the outlet tube 14, the assembly being effected by force fitting. At least one transverse passage is defined between the end face 22 of the internal part and the internal face 27 opposite the external part 19. This transverse passage extends between the axial duct 20 and an annular supply chamber 30 defined between the two pieces. More specifically, the interior part comprises an annular shoulder 32 defined at the periphery of the end face 22 and extending opposite the internal face of the exterior part. It is clear that the axial duct 20 communicates with the transverse passage 26 which itself opens into said annular supply chamber 30. Consequently, the liquid discharged by the pump invades this annular supply chamber.
La face d'extrémité de la pièce intérieure comporte au moins une cannelure ou nervure 29, venue de moulage et définissant le passage transversal 26 entre les faces 22 et 27, en regard.The end face of the interior part comprises at least one groove or rib 29, molded and defining the transverse passage 26 between the faces 22 and 27, opposite.
Selon une caractéristique importante de l'invention, les deux pièces 17, 19 comportent des faces 34, 36 inclinées par rapport à leur axe commun et s'appliquant l'une contre l'autre. La face inclinée 34 interne de la pièce extérieure 19 porte une empreinte 38 définissant la plus grande partie d'une chambre de tourbillonnement 39. Cette dernière est fermée par la face inclinée externe 36 de la pièce intérieure 17. La chambre de tourbillonnement communique avec ladite chambre d'alimentation annulaire 30, comme cela est visible sur la figure 1. En outre, un conduit d'éjection 40 pour le liquide pulvérisé s'étend au travers de la paroi de la pièce extérieure 19 ; il débouche intérieurement au centre de ladite empreinte 38. Dans l'exemple, le conduit d'éjection est perpendiculaire à l'axe commun des deux pièces ; il pourrait aussi être perpendiculaire à la face inclinée dans laquelle est pratiquée l'empreinte. Par face inclinée, on entend plus précisément une surface dont une section passant par l'axe commun y-y forme un angle aigu oc avec cet axe dont le sommet se trouve à l'extérieur et "vers l'avant" par rapport à la face d'extrémité 22 ou 27 perpendiculaire à cet axe. Ce type d'inclinaison est favorable à un démoulage "dans l'axe" de la pièce extérieure comportant l'empreinte, sans détérioration de cette dernière. Comme indiqué ci-dessus, l'angle a une valeur d'au moins 20°, environ, il est de préférence choisi entre 30° et 50°.According to an important characteristic of the invention, the two parts 17, 19 have faces 34, 36 inclined relative to their common axis and applying one against the other. The internal inclined face 34 of the external part 19 carries an imprint 38 defining the major part of a swirl chamber 39. The latter is closed by the external inclined face 36 of the internal part 17. The swirl chamber communicates with said annular supply chamber 30, as can be seen in FIG. 1. In addition, an ejection conduit 40 for the sprayed liquid extends through the wall of the external part 19; it opens internally at the center of said cavity 38. In the example, the ejection duct is perpendicular to the common axis of the two parts; it could also be perpendicular to the inclined face in which the impression is made. By inclined face is meant more precisely a surface whose section passing through the common axis yy forms an acute angle oc with this axis whose apex is outside and "forward" relative to the end face 22 or 27 perpendicular to this axis. This type of inclination is favorable for demolding "in the axis" of the external part comprising the imprint, without deterioration of the latter. As indicated above, the angle has a value of at least 20 °, approximately, it is preferably chosen between 30 ° and 50 °.
Selon une autre caractéristique avantageuse, les faces inclinées en contact 34, 36 des deux pièces sont tronconiques, ce qui permet un montage sans indexation. Les figures 2 et 3 permettent de mieux comprendre la structure de l'empreinte 38 et son aptitude à être démoulée facilement "dans l'axe". Sur la figure 2, on voit que l'empreinte comporte une creusure à contour circulaire 42, concave, voire tronconique, centrée sur l'orifice interne 43 du conduit d'éjection 40, deux rainures 44 s'etendant sensiblement parallèlement à une génératrice de la surface tronconique 34, de part et d'autre de ladite creusure et deux canaux 46, 48 s'etendant respectivement entre ladite creusure et chaque rainure 44. Les deux rainures 44 communiquent avec la chambre d'alimentation annulaire 30 et chaque canal 46, 48 débouche sensiblement tangentiellement dans la creusure en des points sensiblement diamétralement opposés. De plus, chaque canal 46, 48 comporte deux flancs à section en V. Dans l'exemple, l'angle des deux flancs est de 90°. L'un des flancs s'étend sensiblement perpendiculairement à l'axe commun y-y, tandis que l'autre s'étend sensiblement sur une surface cylindrique centrée sur cet axe. Dans le cas où le conduit est, comme représenté ici, perpendiculaire à l'axe commun y-y des deux pièces, le canal 48 le plus éloigné de la chambre annulaire 30 a une section plus grande que l'autre canal 46. Cette différence de section permet de rééquilibrer le tourbillonnement de liquide dans la chambre 39 bien que le conduit de sortie 40 ne soit pas "perpendiculaire" à ladite chambre puisqu'il est au contraire perpendiculaire à l'axe y-y.According to another advantageous characteristic, the inclined faces in contact 34, 36 of the two parts are frustoconical, which allows mounting without indexing. Figures 2 and 3 provide a better understanding of the structure of the imprint 38 and its ability to be demolded easily "in the axis". In FIG. 2, it can be seen that the cavity comprises a recess with a circular contour 42, concave, or even frustoconical, centered on the internal orifice 43 of the ejection duct 40, two grooves 44 extending substantially parallel to a generator of the frustoconical surface 34, on either side of said recess and two channels 46, 48 extending respectively between said recess and each groove 44. The two grooves 44 communicate with the annular supply chamber 30 and each channel 46, 48 opens substantially tangentially into the recess at substantially diametrically opposite points. In addition, each channel 46, 48 has two flanks with a V section. In the example, the angle of the two flanks is 90 °. One of the flanks extends substantially perpendicular to the common axis y-y, while the other extends substantially over a cylindrical surface centered on this axis. In the case where the duct is, as shown here, perpendicular to the common axis yy of the two parts, the channel 48 furthest from the annular chamber 30 has a larger section than the other channel 46. This difference in section allows to rebalance the swirl of liquid in the chamber 39 although the outlet conduit 40 is not "perpendicular" to said chamber since it is on the contrary perpendicular to the axis yy.
La figure 3 illustre plus particulièrement l'élément 50 du moule qui porte en relief les éléments de structure destinés à constituer l'empreinte 38. On distingue deux nervures 44a destinées à former les rainures et s'etendant en relief sur une surface tronconique 34a de part et d'autre d'une saillie tronconique 42a destinée à former la creusure 42. Deux nervures 46a, 48a destinées à former les canaux 46, 48 s'étendent entre cette saillie tronconique et les nervures 44a. Bien entendu, la nervure 48a a une section plus importante que la nervure 46a. FIG. 3 illustrates more particularly the element 50 of the mold which carries in relief the structural elements intended to constitute the imprint 38. There are two ribs 44a intended to form the grooves and extending in relief on a frustoconical surface 34a of on either side of a frustoconical projection 42a intended to form the recess 42. Two ribs 46a, 48a intended to form the channels 46, 48 extend between this frustoconical projection and the ribs 44a. Of course, the rib 48a has a larger section than the rib 46a.

Claims

Revendications claims
1. Bouton-poussoir de pulvérisateur à sortie de pulvérisation latérale du type comportant une chambre de tourbillonnement (39) à sortie centrale et entrée périphérique, agencée entre deux pièces (17, 19) moulées, globalement coaxiales, respectivement une pièce intérieure (17) et une pièce extérieure (19), ces deux pièces étant emboîtées l'une dans l'autre, et une empreinte (38) faisant partie de ladite chambre de tourbillonnement étant définie à l'intérieur de ladite pièce extérieure laquelle comporte en outre un conduit d'éjection s'etendant au travers de sa paroi à partir du centre de ladite empreinte, lesdites deux pièces comportant des faces inclinées (34, 36) par rapport à leur axe commun d'emboîtement (y-y), s'appliquant l'une contre l'autre, en ce que ladite empreinte est pratiquée sur la face inclinée de ladite pièce extérieure caractérisé en ce que lesdites faces inclinées sont orientées dans un sens et selon un angle (α) suffisant, propres à rendre possible un démoulage de ladite pièce extérieure selon ledit axe commun sans endommager ladite empreinte qui comporte une creusure à contour circulaire (42) centrée sur l'orifice, interne dudit conduit d'éjection, deux rainures (44) s'etendant sensiblement parallèlement à une génératrice de ladite surface cylindrique, de part et d'autre de ladite creusure et communiquant avec ladite chambre d'alimentation annulaire et des canaux (46, 48) s'etendant respectivement entre ladite creusure et chaque rainure et débouchant sensiblement tangentiellement dans ladite creusure et en ce que chaque canal (46, 48) comporte deux flancs à section en V ; l'un des flancs dudit canal s'etendant sensiblement perpendiculairement audit axe commun, tandis que l'autre s'étend sensiblement sur une surface cylindrique centrée sur cet axe.1. Sprayer push-button with lateral spray outlet of the type comprising a swirl chamber (39) with central outlet and peripheral inlet, arranged between two molded parts (17, 19), generally coaxial, respectively an interior part (17) and an external part (19), these two parts being nested one inside the other, and an imprint (38) forming part of said swirl chamber being defined inside said external part which further comprises a duct ejection extending through its wall from the center of said cavity, said two parts having inclined faces (34, 36) relative to their common axis of interlocking (yy), applying one against the other, in that said imprint is made on the inclined face of said external part characterized in that said inclined faces are oriented in one direction and at a sufficient angle (α), prop res to make it possible to demold said external part along said common axis without damaging said cavity which comprises a recess with a circular outline (42) centered on the orifice, internal of said ejection duct, two grooves (44) extending substantially parallel to a generator of said cylindrical surface, on either side of said recess and communicating with said annular supply chamber and channels (46, 48) extending respectively between said recess and each groove and opening out substantially tangentially in said recess and in that each channel (46, 48) has two V-shaped flanks; one of the sides of said channel extending substantially perpendicular to said common axis, while the other extends substantially over a cylindrical surface centered on this axis.
2. Bouton-poussoir selon la revendication 1, caractérisé en ce que lesdites faces inclinées (34, 36) des deux pièces sont tronconiques.2. Push button according to claim 1, characterized in that said inclined faces (34, 36) of the two parts are frustoconical.
3. Bouton-poussoir selon la revendication 2, caractérisé en ce que ladite pièce intérieure comporte un épaulement annulaire (32), définissant avec la pièce extérieure une chambre d'alimentation annulaire (30) s'etendant à la périphérie d'une face d'extrémité de ladite pièce intérieure et communiquant avec ladite chambre de tourbillonnement.3. Push button according to claim 2, characterized in that said inner part comprises an annular shoulder (32), defining with the outer part a annular supply chamber (30) extending at the periphery of an end face of said interior part and communicating with said swirl chamber.
4. Bouton-poussoir selon la revendication 3, caractérisé en ce que ladite pièce intérieure comporte un conduit axial (20) débouchant au centre de ladite face d'extrémité de ladite pièce intérieure et en ce qu'au moins un passage transversal (26) est défini entre ladite pièce extérieure, ledit passage transversal s'etendant entre ledit conduit axial et ladite chambre d'alimentation annulaire.4. Push button according to claim 3, characterized in that said inner part comprises an axial duct (20) opening at the center of said end face of said inner part and in that at least one transverse passage (26) is defined between said outer part, said transverse passage extending between said axial duct and said annular supply chamber.
5. Bouton-poussoir selon la revendication 4, en ce que ladite face d'extrémité de la pièce intérieure comporte au moins une cannelure ou nervure de moulage et définissant ledit passage transversal avec la face en regard de ladite pièce extérieure.5. Push button according to claim 4, in that said end face of the inner part comprises at least one groove or molding rib and defining said transverse passage with the opposite face of said outer part.
6. Bouton-poussoir selon l'une des revendications 4 ou 5, caractérisé en ce que l'extrémité dudit conduit axial éloignée de ladite face d'extrémité comporte un élargissement propre à accueillir l'extrémité d'un tube de sortie d'un mécanisme de pompe.6. Push button according to one of claims 4 or 5, characterized in that the end of said axial duct remote from said end face has a widening suitable for receiving the end of an outlet tube of a pump mechanism.
7. Bouton-poussoir selon l'une des revendications précédentes, carcatérisé en ce que ledit conduit d'éjection (40) est perpendiculaire audit axe commun des deux pièces.7. Push button according to one of the preceding claims, carcatized in that said ejection duct (40) is perpendicular to said common axis of the two parts.
8. Bouton-poussoir selon la revendication 7, caractérisé en ce que le canal (48) le plus éloigné de ladite chambre annulaire a une section plus grande que l'autre.8. Push button according to claim 7, characterized in that the channel (48) furthest from said annular chamber has a larger section than the other.
9. Bouton-poussoir selon l'une des revendications précédentes, caractérisé en ce que l'angle (o;) précité est supérieur à 20°, de préférence compris entre 30° et 50°.9. Push button according to one of the preceding claims, characterized in that the above-mentioned angle (o;) is greater than 20 °, preferably between 30 ° and 50 °.
10. Pulvérisateur équipé d'une pompe à actionnement manuel, caractérisé en ce qu'il comporte un bouton-poussoir selon l'une des revendications précédentes. 10. Sprayer equipped with a manually actuated pump, characterized in that it comprises a push button according to one of the preceding claims.
EP04726505A 2003-04-09 2004-04-08 Push button pertaining to a spray Expired - Lifetime EP1613539B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0304418A FR2853635B1 (en) 2003-04-09 2003-04-09 PULVERIZER PUSH BUTTON
PCT/EP2004/003801 WO2004089783A1 (en) 2003-04-09 2004-04-08 Push button pertaining to a spray

Publications (2)

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EP1613539A1 true EP1613539A1 (en) 2006-01-11
EP1613539B1 EP1613539B1 (en) 2006-08-16

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US (1) US7281674B2 (en)
EP (1) EP1613539B1 (en)
JP (1) JP4705016B2 (en)
CN (1) CN100457285C (en)
AT (1) ATE336446T1 (en)
BR (1) BRPI0409533A (en)
CA (1) CA2519704A1 (en)
DE (1) DE602004001987T2 (en)
ES (1) ES2270374T3 (en)
FR (1) FR2853635B1 (en)
MX (1) MXPA05010412A (en)
WO (1) WO2004089783A1 (en)

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CN100457285C (en) 2009-02-04
FR2853635A1 (en) 2004-10-15
MXPA05010412A (en) 2005-11-04
CN1771172A (en) 2006-05-10
EP1613539B1 (en) 2006-08-16
ES2270374T3 (en) 2007-04-01
JP2006522676A (en) 2006-10-05
BRPI0409533A (en) 2006-04-18
FR2853635B1 (en) 2007-04-06
ATE336446T1 (en) 2006-09-15
JP4705016B2 (en) 2011-06-22
US7281674B2 (en) 2007-10-16
CA2519704A1 (en) 2004-10-21
DE602004001987T2 (en) 2007-03-29
US20060086828A1 (en) 2006-04-27
WO2004089783A1 (en) 2004-10-21
DE602004001987D1 (en) 2006-09-28

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