EP2295150A2 - Push button for a dispensing system with pressurised product - Google Patents

Push button for a dispensing system with pressurised product Download PDF

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Publication number
EP2295150A2
EP2295150A2 EP10290482A EP10290482A EP2295150A2 EP 2295150 A2 EP2295150 A2 EP 2295150A2 EP 10290482 A EP10290482 A EP 10290482A EP 10290482 A EP10290482 A EP 10290482A EP 2295150 A2 EP2295150 A2 EP 2295150A2
Authority
EP
European Patent Office
Prior art keywords
push button
needle
button according
dispensing
product
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
EP10290482A
Other languages
German (de)
French (fr)
Other versions
EP2295150B1 (en
EP2295150A3 (en
Inventor
Jean-Pierre Songbe
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 EP2295150A2 publication Critical patent/EP2295150A2/en
Publication of EP2295150A3 publication Critical patent/EP2295150A3/en
Application granted granted Critical
Publication of EP2295150B1 publication Critical patent/EP2295150B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B05B11/0067—Lift valves having a valve seat located downstream the valve element (take precedence)
    • 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
    • B05B1/3436—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 the interface being a plane perpendicular to the outlet axis
    • 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
    • B05B1/3468—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 means for controlling the flow of liquid entering or leaving the swirl chamber
    • B05B1/3473—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 means for controlling the flow of liquid entering or leaving the swirl chamber in response to liquid pressure
    • 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
    • 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
    • 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
    • B65D83/75—Aerosol containers not provided for in groups B65D83/16 - B65D83/74
    • B65D83/753—Aerosol containers not provided for in groups B65D83/16 - B65D83/74 characterised by details or accessories associated with outlets
    • B65D83/7535—Outlet valves opened by the product to be delivered

Definitions

  • the invention relates to a push button for a dispensing system of a product under pressure, as well as such a dispensing system.
  • the dispensing system is intended to equip bottles used in perfumery, in cosmetics or for pharmaceutical treatments.
  • this type of bottle contains a product which is returned by a dispensing system comprising a device for sampling under pressure of said product, said system being actuated by a push button to allow the product to be sprayed.
  • the sampling device comprises a pump or a manually operated valve via the push button.
  • Such push buttons conventionally comprise a body having a mounting well on a tube for supplying the pressurized product and a housing in communication with said well.
  • the housing is provided with a product distribution path between the well and a vortex assembly comprising a vortex chamber provided with a dispensing orifice and at least one supply channel of said chamber.
  • the vortex chamber is arranged to rotate the product very rapidly so that it escapes through the orifice with sufficient speed to split into fine droplets suspended in the air to form an aerosol.
  • the push button may comprise a needle which is movably mounted in the housing between a closed position of the feed of the dispensing orifice and an open position of said feed.
  • the needle has an actuating bearing which is in communication with the distribution path to allow the displacement of said needle in the open position by pressurizing the product in said path.
  • the needles used according to the prior art are generally provided with a tip that obscures the dispensing orifice from the inside of the swirl chamber, said tip being tapered to allow its self-centering and consequently ensure a good sealing concealment.
  • the object of the invention is to solve the problems of the prior art by proposing, in particular, a push button provided with a reversible closing needle of the dispensing orifice, in which the quality of the aerosol generated by the swirl assembly can be guaranteed.
  • the invention proposes a push button for a system for dispensing a product under pressure, said push button comprising a body having a mounting well on a tube for feeding the product under pressure. and a housing in communication with said well, said housing being provided with a product distribution path between said well and a vortex assembly comprising a vortex chamber provided with a dispensing orifice and at least one feed channel of said chamber, said push button further comprising a needle which is movably mounted in the housing between a closed position of the feed of the dispensing orifice and an open position of said feed, said needle having a bearing of actuation which is in communication with the distribution path to allow movement said needle in the open position by pressurizing the product in said path, said needle having a distal wall disposed facing the dispensing orifice to form the bottom of the swirl chamber when said needle is in the open position, said distal wall having a recess.
  • the invention proposes a system for dispensing a product under pressure, comprising a sampling device equipped with a tube for feeding the pressurized product on which the well of such a push button is mounted to allow spraying of the product.
  • a push button for a dispensing system for a product in particular liquid under pressure, is described below, said product being of any kind, in particular used in perfumery, in cosmetics or for pharmaceutical treatments.
  • the push button comprises a body 1 having an annular skirt of aspect 2 which surrounds a well 3 mounting the push button on a tube 4 supplying the product under pressure. Furthermore, the push button comprises an upper zone 5 allowing the user to exert a digital support on said push button in order to move it axially.
  • the dispensing system comprises a sampling device 6 equipped with a tube 4 for supplying the pressurized product which is sealed in the well 3.
  • the dispensing system further comprises mounting means 7 on a bottle 8 containing the product and 9 sampling means of the product inside said bottle which are arranged to supply the feed tube 4 in pressurized product.
  • the sampling device 6 may comprise a manually operated pump or, in the case where the product is packaged under pressure in the bottle, a manually operated valve.
  • a manually operated pump or, in the case where the product is packaged under pressure in the bottle, a manually operated valve.
  • the pump or the valve is actuated to supply the supply tube 4 with pressure product.
  • the body 1 also has an annular housing 10 which is in communication with the well 3.
  • the housing 10 has an axis perpendicular to that of the mounting well 3 to allow lateral spraying of the product relative to the body 1 of the push button.
  • the housing 10 may be collinear with the well 3, in particular for a push button forming a nasal spray tip.
  • the housing 10 is provided with a path for dispensing the product under pressure between the well 3 and a swirl assembly comprising a swirl chamber 11 provided with a dispensing orifice 12 as well as at least one supply channel 13 of said bedroom.
  • the push button comprises a spray nozzle 14 which is arranged in the housing 10, said nozzle having a front radial wall 14a on the inside of which is formed an indentation of the supply channels 13 and the vortex chamber 11 provided with the dispensing orifice 12.
  • an impression of the The vortex assembly may be formed directly on a wall of the housing 10, in particular for a nasal spraying nozzle.
  • the nozzle 14 and the body 1 are made by molding, in particular of a different thermoplastic material.
  • the material forming the nozzle 14 has a stiffness that is greater than the stiffness of the material forming the body 1.
  • the significant stiffness of the nozzle 14 prevents its deformation during its mounting in the housing 10.
  • the lower stiffness of the body 1 allows on the one hand a more qualitative touch during the actuation and on the other hand an improved seal between the mounting well 3 and the feed tube 4.
  • the body 1 is made of polyolefin and the nozzle 14 is made of cycloolefinic copolymer (COC), poly (oxymethylene) or poly (butylene terephthalate).
  • the nozzle 14 has a cylindrical side wall 14b of revolution which is closed forwards by the wall 14a.
  • the housing 10 has a rear wall 10a, an inner wall 10b and a front opening 10c in which the outer face of the side wall 14b is fitted, the rear edge of said outer face being further provided with a radial projection 15 of anchoring the nozzle 14 in said housing.
  • the imprint of the vortex assembly comprises three radial supply channels 13 which open laterally into the vortex chamber 11, said channels having a constant section in U.
  • the vortex chamber 11 has a cylindrical geometry of revolution, l dispensing orifice 12 being formed at its center.
  • a different number of feed channels may be provided, with possibly a modified orientation and / or geometry, as well as another mode of supplying the vortex chamber 11.
  • the dispensing orifice 12 may be off-center with respect to the vortex chamber 11 in order to compensate for any imbalance hydrodynamic, for example in the case where there is only one channel 13.
  • the push button also comprises a barrel 16 which is secured to the housing 10.
  • the barrel 16 has a front portion 16a and a rear portion 16b whose inner diameter is greater than the outer diameter of said front portion, said barrel being fixed in the housing 10 by fitting the outer face of said rear portion on the inner wall 10b of said housing.
  • the outer face is provided with a radial projection 17 for anchoring the barrel 16 in the housing 10, the rear portion 16b abutting on the rear wall 10a of said housing.
  • the product distribution path between the well 3 and the swirl assembly is formed between the periphery of the barrel 16 and the interior of the housing 10. More specifically, in the embodiment shown, the distribution path is formed between the periphery of the front part 16a and the inner wall 10b of the housing 10.
  • three axial channels 19 are equidistributed on the periphery of the front part 16a, however a number of different channels 19, in particular different from the number of supply channels 13, can be provided.
  • the barrel 16 has a flat distal wall 16c which extends radially to bear on the supply channels 13 of the vortex chamber 11 in order to delimit their bottom. More specifically, the distal wall 16c bears on the inside of the front wall 14a of the nozzle 14 in order to close the cavity of the supply channels 13 from the rear, said front wall of the nozzle 14 also having a fingerprint for the downstream annular duct 20 with which the footprint of the supply channels 13 communicates.
  • the push button also comprises a needle 21 which is mounted movably in the housing 10 between a closed position of the supply of the dispensing orifice 12 and an open position of said supply.
  • the needle 21 has a bearing surface 22 which is in communication with the dispensing path for actuating the displacement of said needle in the open position by pressurizing the product into the distribution path.
  • the push button comprises means 23 for resilient return of the needle 21 in the closed position.
  • the needle 21 at rest is in the closed position and, by supplying the product in the distribution path which is closed, the pressure exerted by said product on the actuating surface 22 is sufficient to overcome the force of the means of return 23 in order to move said needle in the open position.
  • the pressure drop in the distribution path induces the displacement of the needle 21 in the closed position under the effect of the return means 23.
  • the needle 21 has a distal wall 21a disposed opposite the dispensing orifice 12 to form the bottom of the swirl chamber 11 when said needle is in the open position.
  • the needle 21 is mounted in translation relative to the orifice of distribution 12 between the closed position in which the distal wall 21a is pressed tightly, in particular by being pushed by the return means 23, against said orifice to obstruct its supply ( figure 2 ) and the opening position in which said distal wall is moved away from said orifice to form the bottom of the vortex chamber 11 ( figure 3 ).
  • the barrel 16 has a bore 24 in which the needle 21 is movably mounted, said bore passing through the front portions 16a and 16b rear.
  • the needle 21 comprises a base 25 which is housed in the rear portion 16b of the barrel 16 and a rod 26 which is housed in the front portion 16a of said barrel, the actuating surface 22 being formed radially on the front face of said base so as to be housed in said rear part.
  • the elastic return means is formed by a spring 23 which is interposed between the rear of the base 25 and the rear wall 10a of the housing.
  • a pin 27, 28 is formed respectively on the base 25 and on the rear wall 10a, each end of the spring 23 being mounted around one of said pins to stabilize its compression - respectively axial - decompression during the provision of the needle 21 in the open position - respectively closed -.
  • the bore 24 of the rear portion 16b communicates with said path through at least one passage 29 formed in the barrel 16.
  • a passage 29 is formed on the rear end of each axial channel 19.
  • the actuating surface 22 is slidably mounted in the bore 24 of the rear portion 16b.
  • the periphery of the base 25 is provided with two sealing beads 30 spaced axially, said beads being in sliding support tight inside the bore 24.
  • the front of the actuating surface 22 is in communication with the distribution path so that the rear of the distribution path is delimited by said actuating wall.
  • the rear of the actuating surface 22 is in communication with a duct 31 for venting which is formed in the body 1 of the push button, so as to avoid the compression of air during displacements. the needle 21 relative to the housing 10.
  • the product when the product is supplied with pressure in the distribution path, it fills the upstream annular duct 18 and passes through the passages 29 to bathe the front of the actuating surface 22.
  • the product can not escape by the dispensing orifice 12 which is closed by the distal wall 21a, the pressure rises and is exerted on the actuating surface 22 which, being mobile, moves back to open the supply of said orifice forming the vortex chamber 11
  • the pressurized product then rotates in the vortex chamber 11, is pushed toward the center of said chamber and escapes through the dispensing orifice 12 to form the aerosol.
  • the distal wall 21a is formed radially on the distal end of the stem 26, said end being sealingly mounted in the bore 24 by positioning said distal portion relative to the orifice 12.
  • the bore 24 may comprise a sealing bead 32 on which the periphery of the distal end of the rod 26 slides.
  • the distal end of the rod 26 is disposed in the cavity of the vortex chamber 11 so as to obstruct the dispensing orifice 12, in particular at the supply of said vortex chamber by
  • the outside diameter of the distal end of the rod 26 is substantially equal to the inside diameter of the cavity of the vortex chamber 11.
  • the swirl chamber 11 is defined axially between the cavity and the distal wall 21a, the distal wall 16c of the barrel 16 closing laterally said chamber by sealing on the rear of the front wall 14a of the nozzle 14, especially at the footprint of the supply channels 13.
  • the distal wall 21a of the needle 21 has a recess 33 which makes it possible to stabilize the vortex formed in the vortex chamber 11 and thus to ensure the control as well as the reproducibility of the aerosol.
  • the recess 33 prevents the bottom of the swirl chamber 11 from having a convexity, due for example to manufacturing dispersions or distortions of the distal wall 21a in time.
  • the maximum depth of the recess 33 may be between 25% and 300%, especially between 50% and 150%, of the distance between the dispensing orifice 12 and the distal wall 21a when the needle 21 is in the open position, that is to say the depth of the swirl chamber 11.
  • the depth of the feed channels 13 is constant and similar to that of the swirl chamber 11.
  • the depth of the recess 33 is sufficient to ensure the non-convexity of the bottom of the vortex chamber 11 while being sufficiently limited not to interact significantly on the characteristics of the aerosol dispensed, in particular by not being large enough to form swirling counter-chamber.
  • the quality of the aerosol remains identical from one manufacture to another while maintaining high manufacturing and assembly rates.
  • the depth of the recess can be increased to form vortex chamber.
  • the distal wall 21a is flat and the recess 33 is formed in the central part of said wall, in particular by being centered on the axis of the dispensing orifice 12.
  • the vortex formed in the The vortex chamber 11 is stable since it is based on a virtually planar and reproducible wall 21a because of the presence of the recess 33.
  • the recess 33 has a geometry of revolution, more precisely cylindrical of revolution in the embodiment shown.
  • a slightly frustoconical or semi-elliptical geometry can be provided.
  • the recess 33 may have an opening whose size is between 20% and 80% of the diameter of the vortex chamber 11.
  • the diameter of the dispensing orifice 12 is 0.25 mm
  • the diameter of the swirling chamber 11 is 1.6 mm
  • the diameter of the distal wall 21 a of the needle 21 is 1, 5 mm
  • the depth of the supply channels 13 and the vortex chamber 11 is between 0.2 and 0.5 mm
  • the diameter of the recess 33 is at least 0.45 mm and its depth is at a minimum 0.1 mm.

Abstract

The push-button has a body (1) provided with a mounting shaft (3) that is mounted on a pressurized product supply tube. Housing is equipped with a passage for dispensing a product between a shaft and a swirl assembly. A swirl chamber (11) comprises a distribution opening (12) and a supply channel (13). An actuation bearing (22) is connected with the dispensing passage. A needle (21) is provided with a distal wall (21a) arranged opposite to the dispensing opening to form a base of the swirl chamber when the needle is in opening position. A recess (33) is formed in the distal wall. An independent claim is also included for a pressurized product dispensing system comprising a discharge device equipped with a pressurized product supply.

Description

L'invention concerne un bouton poussoir pour un système de distribution d'un produit sous pression, ainsi qu'un tel système de distribution.The invention relates to a push button for a dispensing system of a product under pressure, as well as such a dispensing system.

Dans une application particulière, le système de distribution est destiné à équiper des flacons utilisés en parfumerie, en cosmétique ou pour des traitements pharmaceutiques. En effet, ce type de flacon contient un produit qui est restitué par un système de distribution comprenant un dispositif de prélèvement sous pression dudit produit, ledit système étant actionné par un bouton poussoir pour permettre la pulvérisation du produit. En particulier, le dispositif de prélèvement comprend une pompe ou une valve à actionnement manuel par l'intermédiaire du bouton poussoir.In a particular application, the dispensing system is intended to equip bottles used in perfumery, in cosmetics or for pharmaceutical treatments. Indeed, this type of bottle contains a product which is returned by a dispensing system comprising a device for sampling under pressure of said product, said system being actuated by a push button to allow the product to be sprayed. In particular, the sampling device comprises a pump or a manually operated valve via the push button.

De tels boutons poussoirs comprennent classiquement un corps présentant un puits de montage sur un tube d'amenée du produit sous pression et un logement en communication avec ledit puits. Le logement est pourvu d'un chemin de distribution du produit entre le puits et un ensemble tourbillonnaire comprenant une chambre tourbillonnaire pourvue d'un orifice de distribution ainsi que d'au moins un canal d'alimentation de ladite chambre. En particulier, la chambre tourbillonnaire est agencée pour faire tourner très rapidement le produit afin qu'il s'échappe par l'orifice avec une vitesse suffisante pour se fractionner en fines gouttelettes en suspension dans l'air afin de former un aérosol.Such push buttons conventionally comprise a body having a mounting well on a tube for supplying the pressurized product and a housing in communication with said well. The housing is provided with a product distribution path between the well and a vortex assembly comprising a vortex chamber provided with a dispensing orifice and at least one supply channel of said chamber. In particular, the vortex chamber is arranged to rotate the product very rapidly so that it escapes through the orifice with sufficient speed to split into fine droplets suspended in the air to form an aerosol.

Afin que le produit restant contenu dans le bouton poussoir ne se dessèche pas entre deux utilisations et reste préservé des dégradations dues à son contact avec l'air, il est connu d'équiper les boutons poussoirs avec des dispositifs de fermeture réversible de l'orifice de distribution.So that the remaining product contained in the push button does not dry out between two uses and remains preserved from damage due to its contact with the air, it is known to equip the push buttons with reversible closing devices of the orifice of distribution.

En particulier, le bouton poussoir peut comprendre un pointeau qui est monté mobile dans le logement entre une position de fermeture de l'alimentation de l'orifice de distribution et une position d'ouverture de ladite alimentation. Le pointeau présente une portée d'actionnement qui est en communication avec le chemin de distribution pour permettre le déplacement dudit pointeau en position d'ouverture par mise en pression du produit dans ledit chemin.In particular, the push button may comprise a needle which is movably mounted in the housing between a closed position of the feed of the dispensing orifice and an open position of said feed. The needle has an actuating bearing which is in communication with the distribution path to allow the displacement of said needle in the open position by pressurizing the product in said path.

Les pointeaux utilisés selon l'art antérieur sont généralement pourvus d'une pointe venant occulter l'orifice de distribution par l'intérieur de la chambre tourbillonnaire, ladite pointe étant conique pour permettre son autocentrage et assurer conséquemment une bonne étanchéité d'occultation.The needles used according to the prior art are generally provided with a tip that obscures the dispensing orifice from the inside of the swirl chamber, said tip being tapered to allow its self-centering and consequently ensure a good sealing concealment.

Mais l'utilisation de tels pointeaux présente l'inconvénient de produire un aérosol de piètre qualité et difficile à reproduire d'une utilisation à l'autre car le vortex formé dans la chambre tourbillonnaire est instable puisque basé sur une pointe, et parfois de travers en cas de décentrement de la pointe. De plus, au fil des utilisations, la pointe qui a tendance à mater l'entrée de l'orifice de distribution, bouche en partie le passage du produit dans l'orifice et dégrade la qualité de l'aérosol.But the use of such needles has the disadvantage of producing an aerosol of poor quality and difficult to reproduce from one use to another because the vortex formed in the vortex chamber is unstable because based on a tip, and sometimes crooked in case of decentering of the tip. In addition, over uses, the tip that tends to subdue the inlet of the dispensing orifice, partly blocks the passage of the product in the orifice and degrades the quality of the aerosol.

L'invention a pour but de résoudre les problèmes de l'art antérieur en proposant notamment un bouton poussoir pourvu d'un pointeau de fermeture réversible de l'orifice de distribution, dans lequel la qualité de l'aérosol généré par l'ensemble tourbillonnaire peut être garantie.The object of the invention is to solve the problems of the prior art by proposing, in particular, a push button provided with a reversible closing needle of the dispensing orifice, in which the quality of the aerosol generated by the swirl assembly can be guaranteed.

A cet effet, et selon un premier aspect, l'invention propose un bouton poussoir pour un système de distribution d'un produit sous pression, ledit bouton poussoir comprenant un corps présentant un puits de montage sur un tube d'amenée du produit sous pression et un logement en communication avec ledit puits, ledit logement étant pourvu d'un chemin de distribution du produit entre ledit puits et un ensemble tourbillonnaire comprenant une chambre tourbillonnaire pourvue d'un orifice de distribution ainsi que d'au moins un canal d'alimentation de ladite chambre, ledit bouton poussoir comprenant en outre un pointeau qui est monté mobile dans le logement entre une position de fermeture de l'alimentation de l'orifice de distribution et une position d'ouverture de ladite alimentation, ledit pointeau présentant une portée d'actionnement qui est en communication avec le chemin de distribution pour permettre le déplacement dudit pointeau en position d'ouverture par mise en pression du produit dans ledit chemin, ledit pointeau présentant une paroi distale disposée en regard de l'orifice de distribution pour former le fond de la chambre tourbillonnaire lorsque ledit pointeau est en position d'ouverture, ladite paroi distale présentant un évidement.For this purpose, and according to a first aspect, the invention proposes a push button for a system for dispensing a product under pressure, said push button comprising a body having a mounting well on a tube for feeding the product under pressure. and a housing in communication with said well, said housing being provided with a product distribution path between said well and a vortex assembly comprising a vortex chamber provided with a dispensing orifice and at least one feed channel of said chamber, said push button further comprising a needle which is movably mounted in the housing between a closed position of the feed of the dispensing orifice and an open position of said feed, said needle having a bearing of actuation which is in communication with the distribution path to allow movement said needle in the open position by pressurizing the product in said path, said needle having a distal wall disposed facing the dispensing orifice to form the bottom of the swirl chamber when said needle is in the open position, said distal wall having a recess.

Selon un deuxième aspect, l'invention propose un système de distribution d'un produit sous pression, comprenant un dispositif de prélèvement équipé d'un tube d'amenée du produit sous pression sur lequel le puits d'un tel bouton poussoir est monté pour permettre la pulvérisation du produit.According to a second aspect, the invention proposes a system for dispensing a product under pressure, comprising a sampling device equipped with a tube for feeding the pressurized product on which the well of such a push button is mounted to allow spraying of the product.

D'autres objets et avantages de l'invention apparaîtront dans la description qui suit, faite en référence aux figures annexées dans lesquelles :

  • la figure 1 est une vue en coupe longitudinale partielle d'un système de distribution selon un mode de réalisation de l'invention qui est monté sur un flacon, dans laquelle le pointeau est en position de fermeture de l'orifice de distribution ;
  • la figure 2 est une vue en coupe longitudinale du bouton poussoir représenté sur la figure 1 ;
  • la figure 3 est une vue en coupe longitudinale du bouton poussoir de la figure 2, dans laquelle le pointeau est en position d'ouverture de l'orifice de distribution ;
  • les figures 4 à 6 sont des vues en perspective de respectivement la buse, le canon et le pointeau du bouton poussoir représenté sur les figures 1 à 3.
Other objects and advantages of the invention will appear in the description which follows, made with reference to the appended figures in which:
  • the figure 1 is a partial longitudinal sectional view of a dispensing system according to an embodiment of the invention which is mounted on a bottle, wherein the needle is in the closed position of the dispensing orifice;
  • the figure 2 is a longitudinal sectional view of the push button shown on the figure 1 ;
  • the figure 3 is a longitudinal sectional view of the push button of the figure 2 wherein the needle is in the open position of the dispensing orifice;
  • the Figures 4 to 6 are perspective views of respectively the nozzle, the barrel and the needle of the push button shown on the Figures 1 to 3 .

En relation avec les figures, on décrit ci-dessous un bouton poussoir pour un système de distribution d'un produit notamment liquide sous pression, ledit produit pouvant être de toute nature, notamment utilisé en parfumerie, en cosmétique ou pour des traitements pharmaceutiques.In relation to the figures, a push button for a dispensing system for a product, in particular liquid under pressure, is described below, said product being of any kind, in particular used in perfumery, in cosmetics or for pharmaceutical treatments.

Le bouton poussoir comprend un corps 1 présentant une jupe annulaire d'aspect 2 qui entoure un puits 3 de montage du bouton poussoir sur un tube 4 d'amenée du produit sous pression. Par ailleurs, le bouton poussoir comprend une zone supérieure 5 permettant à l'utilisateur d'exercer un appui digital sur ledit bouton poussoir afin de pouvoir le déplacer axialement.The push button comprises a body 1 having an annular skirt of aspect 2 which surrounds a well 3 mounting the push button on a tube 4 supplying the product under pressure. Furthermore, the push button comprises an upper zone 5 allowing the user to exert a digital support on said push button in order to move it axially.

En relation avec la figure 1, le système de distribution comprend un dispositif de prélèvement 6 équipé d'un tube 4 d'amenée du produit sous pression qui est inséré de façon étanche dans le puits 3. De façon connue, le système de distribution comprend par ailleurs des moyens de montage 7 sur un flacon 8 contenant le produit et des moyens de prélèvement 9 du produit à l'intérieur dudit flacon qui sont agencés pour alimenter le tube d'amenée 4 en produit sous pression.In relation to the figure 1 , the dispensing system comprises a sampling device 6 equipped with a tube 4 for supplying the pressurized product which is sealed in the well 3. In known manner, the dispensing system further comprises mounting means 7 on a bottle 8 containing the product and 9 sampling means of the product inside said bottle which are arranged to supply the feed tube 4 in pressurized product.

Le dispositif de prélèvement 6 peut comprendre une pompe à actionnement manuel ou, dans le cas où le produit est conditionné sous pression dans le flacon, une valve à actionnement manuel. Ainsi, lors d'un déplacement manuel du bouton poussoir, la pompe ou la valve est actionnée pour alimenter le tube d'amenée 4 en produit sous pression.The sampling device 6 may comprise a manually operated pump or, in the case where the product is packaged under pressure in the bottle, a manually operated valve. Thus, during a manual movement of the push button, the pump or the valve is actuated to supply the supply tube 4 with pressure product.

Le corps 1 présente également un logement annulaire 10 qui est en communication avec le puits 3. Dans le mode de réalisation représenté, le logement 10 est d'axe perpendiculaire à celui du puits de montage 3 pour permettre une pulvérisation latérale du produit relativement au corps 1 du bouton poussoir. En variante non représentée, le logement 10 peut être colinéaire au puits 3, notamment pour un bouton poussoir formant embout nasal de pulvérisation.The body 1 also has an annular housing 10 which is in communication with the well 3. In the embodiment shown, the housing 10 has an axis perpendicular to that of the mounting well 3 to allow lateral spraying of the product relative to the body 1 of the push button. In a variant that is not shown, the housing 10 may be collinear with the well 3, in particular for a push button forming a nasal spray tip.

Le logement 10 est pourvu d'un chemin de distribution du produit sous pression entre le puits 3 et un ensemble tourbillonnaire comprenant une chambre tourbillonnaire 11 pourvue d'un orifice de distribution 12 ainsi que d'au moins un canal 13 d'alimentation de ladite chambre.The housing 10 is provided with a path for dispensing the product under pressure between the well 3 and a swirl assembly comprising a swirl chamber 11 provided with a dispensing orifice 12 as well as at least one supply channel 13 of said bedroom.

Dans le mode de réalisation représenté, le bouton poussoir comprend une buse 14 de pulvérisation qui est disposée dans le logement 10, ladite buse présentant une paroi radiale avant 14a sur l'intérieur de laquelle est formée une empreinte en creux des canaux d'alimentation 13 ainsi que de la chambre tourbillonnaire 11 pourvue de l'orifice de distribution 12. En variante non représentée, une empreinte de l'ensemble tourbillonnaire peut être formée directement sur une paroi du logement 10, notamment pour un embout nasal de pulvérisation.In the embodiment shown, the push button comprises a spray nozzle 14 which is arranged in the housing 10, said nozzle having a front radial wall 14a on the inside of which is formed an indentation of the supply channels 13 and the vortex chamber 11 provided with the dispensing orifice 12. In a variant not shown, an impression of the The vortex assembly may be formed directly on a wall of the housing 10, in particular for a nasal spraying nozzle.

De façon avantageuse, la buse 14 et le corps 1 sont réalisés par moulage, notamment d'un matériau thermoplastique différent. En outre, le matériau formant la buse 14 présente une rigidité qui est supérieure à la rigidité du matériau formant le corps 1. Ainsi, la raideur importante de la buse 14 permet d'éviter sa déformation lors de son montage dans le logement 10. En outre, la raideur moins importante du corps 1 permet d'une part un toucher plus qualitatif lors de l'actionnement et d'autre part une étanchéité améliorée entre le puits 3 de montage et le tube d'amenée 4.Advantageously, the nozzle 14 and the body 1 are made by molding, in particular of a different thermoplastic material. In addition, the material forming the nozzle 14 has a stiffness that is greater than the stiffness of the material forming the body 1. Thus, the significant stiffness of the nozzle 14 prevents its deformation during its mounting in the housing 10. In Moreover, the lower stiffness of the body 1 allows on the one hand a more qualitative touch during the actuation and on the other hand an improved seal between the mounting well 3 and the feed tube 4.

Dans un exemple de réalisation, le corps 1 est réalisé en polyoléfine et la buse 14 est réalisée en copolymère cyclo oléfinique (COC), en poly(oxyméthylène) ou en poly(butylène téréphtalate).In an exemplary embodiment, the body 1 is made of polyolefin and the nozzle 14 is made of cycloolefinic copolymer (COC), poly (oxymethylene) or poly (butylene terephthalate).

La buse 14 présente une paroi latérale 14b cylindrique de révolution qui est fermée vers l'avant par la paroi 14a. Le logement 10 présente une paroi arrière 10a, une paroi intérieure 10b et une ouverture avant 10c dans laquelle la face externe de la paroi latérale 14b est emmanchée, le bord arrière de ladite face externe étant en outre pourvu d'une saillie radiale 15 d'ancrage de la buse 14 dans ledit logement.The nozzle 14 has a cylindrical side wall 14b of revolution which is closed forwards by the wall 14a. The housing 10 has a rear wall 10a, an inner wall 10b and a front opening 10c in which the outer face of the side wall 14b is fitted, the rear edge of said outer face being further provided with a radial projection 15 of anchoring the nozzle 14 in said housing.

En relation avec la figure 4, l'empreinte de l'ensemble tourbillonnaire comprend trois canaux radiaux 13 d'alimentation qui débouchent latéralement dans la chambre tourbillonnaire 11, lesdits canaux présentant une section constante en U. En outre, la chambre tourbillonnaire 11 présente une géométrie cylindrique de révolution, l'orifice de distribution 12 étant formé en son centre. Toutefois, un nombre différent de canaux 13 d'alimentation peut être prévu, avec éventuellement une orientation et/ou une géométrie modifiée, ainsi qu'un autre mode d'alimentation de la chambre tourbillonnaire 11. En particulier, l'orifice de distribution 12 peut être décentré par rapport à la chambre tourbillonnaire 11 afin de compenser un éventuel déséquilibrage hydrodynamique, par exemple dans le cas où il n'y a qu'un seul canal 13.In relation to the figure 4 , the imprint of the vortex assembly comprises three radial supply channels 13 which open laterally into the vortex chamber 11, said channels having a constant section in U. In addition, the vortex chamber 11 has a cylindrical geometry of revolution, l dispensing orifice 12 being formed at its center. However, a different number of feed channels may be provided, with possibly a modified orientation and / or geometry, as well as another mode of supplying the vortex chamber 11. In particular, the dispensing orifice 12 may be off-center with respect to the vortex chamber 11 in order to compensate for any imbalance hydrodynamic, for example in the case where there is only one channel 13.

Le bouton poussoir comprend également un canon 16 qui est solidaire du logement 10. En relation avec la figure 5, le canon 16 présente une partie avant 16a et une partie arrière 16b dont le diamètre intérieur est supérieur au diamètre extérieur de ladite partie avant, ledit canon étant fixé dans le logement 10 par emmanchement de la face externe de ladite partie arrière sur la paroi intérieure 10b dudit logement. En outre, la face externe est pourvue d'une saillie radiale 17 d'ancrage du canon 16 dans le logement 10, la partie arrière 16b étant en butée sur la paroi arrière 10a dudit logement.The push button also comprises a barrel 16 which is secured to the housing 10. In connection with the figure 5 , the barrel 16 has a front portion 16a and a rear portion 16b whose inner diameter is greater than the outer diameter of said front portion, said barrel being fixed in the housing 10 by fitting the outer face of said rear portion on the inner wall 10b of said housing. In addition, the outer face is provided with a radial projection 17 for anchoring the barrel 16 in the housing 10, the rear portion 16b abutting on the rear wall 10a of said housing.

Le chemin de distribution du produit entre le puits 3 et l'ensemble tourbillonnaire est formé entre la périphérie du canon 16 et l'intérieur du logement 10. Plus précisément, dans le mode de réalisation représenté, le chemin de distribution est formé entre la périphérie de la partie avant 16a et la paroi intérieure 10b du logement 10.The product distribution path between the well 3 and the swirl assembly is formed between the periphery of the barrel 16 and the interior of the housing 10. More specifically, in the embodiment shown, the distribution path is formed between the periphery of the front part 16a and the inner wall 10b of the housing 10.

Pour ce faire, la paroi intérieure 10b présente une géométrie cylindrique de révolution et la périphérie de la partie avant 16a présente une empreinte en creux qui est formée pour que le chemin de distribution comprenne :

  • un conduit annulaire amont 18 dans lequel débouche le produit sortant du puits 3 ;
  • au moins un canal axial 19 communiquant de part et d'autre respectivement avec ledit conduit annulaire amont et avec un conduit annulaire aval 20 avec lequel les canaux d'alimentation 13 de la chambre tourbillonnaire 11 communiquent.
To do this, the inner wall 10b has a cylindrical geometry of revolution and the periphery of the front portion 16a has an indentation which is formed so that the distribution path comprises:
  • an upstream annular duct 18 into which the product exiting the well 3 opens;
  • at least one axial channel 19 communicating on either side respectively with said upstream annular duct and with a downstream annular duct 20 with which the supply ducts 13 of the vortex chamber 11 communicate.

Dans le mode de réalisation représenté, trois canaux axiaux 19 sont équirépartis sur la périphérie de la partie avant 16a, toutefois un nombre de canaux 19 différent, en particulier différent du nombre de canaux d'alimentation 13, peut être prévu.In the embodiment shown, three axial channels 19 are equidistributed on the periphery of the front part 16a, however a number of different channels 19, in particular different from the number of supply channels 13, can be provided.

Par ailleurs, le canon 16 présente une paroi distale 16c plane qui s'étend radialement pour être en appui sur les canaux d'alimentation 13 de la chambre tourbillonnaire 11 afin de délimiter leur fond. Plus précisément, la paroi distale 16c est en appui sur l'intérieur de la paroi avant 14a de la buse 14 afin de fermer par l'arrière l'empreinte des canaux d'alimentation 13, ladite paroi avant de la buse 14 présentant également une empreinte pour le conduit annulaire aval 20 avec lequel l'empreinte des canaux d'alimentation 13 communique.Furthermore, the barrel 16 has a flat distal wall 16c which extends radially to bear on the supply channels 13 of the vortex chamber 11 in order to delimit their bottom. More specifically, the distal wall 16c bears on the inside of the front wall 14a of the nozzle 14 in order to close the cavity of the supply channels 13 from the rear, said front wall of the nozzle 14 also having a fingerprint for the downstream annular duct 20 with which the footprint of the supply channels 13 communicates.

Le bouton poussoir comprend également un pointeau 21 qui est monté mobile dans le logement 10 entre une position de fermeture de l'alimentation de l'orifice de distribution 12 et une position d'ouverture de ladite alimentation. Pour permettre la fermeture réversible entre deux utilisations de l'orifice de distribution 12, le pointeau 21 présente une portée 22 qui est en communication avec le chemin de distribution pour actionner le déplacement dudit pointeau en position d'ouverture par mise en pression du produit dans le chemin de distribution. En outre, le bouton poussoir comprend un moyen 23 de rappel élastique du pointeau 21 en position de fermeture.The push button also comprises a needle 21 which is mounted movably in the housing 10 between a closed position of the supply of the dispensing orifice 12 and an open position of said supply. To allow the reversible closure between two uses of the dispensing orifice 12, the needle 21 has a bearing surface 22 which is in communication with the dispensing path for actuating the displacement of said needle in the open position by pressurizing the product into the distribution path. In addition, the push button comprises means 23 for resilient return of the needle 21 in the closed position.

Ainsi, le pointeau 21 au repos est en position de fermeture et, par alimentation du produit dans le chemin de distribution qui est fermé, la pression exercée par ledit produit sur la portée d'actionnement 22 est suffisante pour vaincre l'effort du moyen de rappel 23 afin de déplacer ledit pointeau en position d'ouverture. En fin de distribution, la baisse de pression dans le chemin de distribution induit le déplacement du pointeau 21 en position de fermeture sous l'effet du moyen de rappel 23.Thus, the needle 21 at rest is in the closed position and, by supplying the product in the distribution path which is closed, the pressure exerted by said product on the actuating surface 22 is sufficient to overcome the force of the means of return 23 in order to move said needle in the open position. At the end of distribution, the pressure drop in the distribution path induces the displacement of the needle 21 in the closed position under the effect of the return means 23.

En outre, le pointeau 21 présente une paroi distale 21a disposée en regard de l'orifice de distribution 12 pour former le fond de la chambre tourbillonnaire 11 lorsque ledit pointeau est en position d'ouverture. Dans le mode de réalisation représenté, le pointeau 21 est monté en translation par rapport à l'orifice de distribution 12 entre la position de fermeture dans laquelle la paroi distale 21a est plaquée en appui étanche, notamment en étant poussée par le moyen de rappel 23, contre ledit orifice pour obstruer son alimentation (figure 2) et la position d'ouverture dans laquelle ladite paroi distale est reculée à distance dudit orifice pour former le fond de la chambre tourbillonnaire 11 (figure 3).In addition, the needle 21 has a distal wall 21a disposed opposite the dispensing orifice 12 to form the bottom of the swirl chamber 11 when said needle is in the open position. In the embodiment shown, the needle 21 is mounted in translation relative to the orifice of distribution 12 between the closed position in which the distal wall 21a is pressed tightly, in particular by being pushed by the return means 23, against said orifice to obstruct its supply ( figure 2 ) and the opening position in which said distal wall is moved away from said orifice to form the bottom of the vortex chamber 11 ( figure 3 ).

Le canon 16 présente un alésage 24 dans lequel le pointeau 21 est monté mobile, ledit alésage traversant les parties avant 16a et arrière 16b. En relation avec la figure 6, le pointeau 21 comprend une base 25 qui est logée dans la partie arrière 16b du canon 16 et une tige 26 qui est logée dans la partie avant 16a dudit canon, la portée d'actionnement 22 étant formée radialement sur la face avant de ladite base de sorte à être logée dans ladite partie arrière.The barrel 16 has a bore 24 in which the needle 21 is movably mounted, said bore passing through the front portions 16a and 16b rear. In relation to the figure 6 , the needle 21 comprises a base 25 which is housed in the rear portion 16b of the barrel 16 and a rod 26 which is housed in the front portion 16a of said barrel, the actuating surface 22 being formed radially on the front face of said base so as to be housed in said rear part.

Le moyen de rappel élastique est formé par un ressort 23 qui est interposé entre l'arrière de la base 25 et la paroi arrière 10a du logement. Pour ce faire, un pion 27, 28 est formé respectivement sur la base 25 et sur la paroi arrière 10a, chaque extrémité du ressort 23 étant montée autour d'un desdits pions pour stabiliser sa compression - respectivement décompression - axiale lors de la disposition du pointeau 21 en position d'ouverture - respectivement de fermeture -.The elastic return means is formed by a spring 23 which is interposed between the rear of the base 25 and the rear wall 10a of the housing. To do this, a pin 27, 28 is formed respectively on the base 25 and on the rear wall 10a, each end of the spring 23 being mounted around one of said pins to stabilize its compression - respectively axial - decompression during the provision of the needle 21 in the open position - respectively closed -.

Pour mettre la portée d'actionnement 22 en communication avec le chemin de distribution, l'alésage 24 de la partie arrière 16b communique avec ledit chemin par l'intermédiaire d'au moins un passage 29 formé dans le canon 16. En relation avec la figure 5, un passage 29 est formé sur l'extrémité arrière de chaque canal axial 19.To bring the actuating surface 22 into communication with the distribution path, the bore 24 of the rear portion 16b communicates with said path through at least one passage 29 formed in the barrel 16. In connection with the figure 5 a passage 29 is formed on the rear end of each axial channel 19.

La portée d'actionnement 22 est montée en coulissement étanche dans l'alésage 24 de la partie arrière 16b. Pour ce faire, la périphérie de la base 25 est pourvue de deux bourrelets d'étanchéité 30 espacés axialement, lesdits bourrelets étant en appui coulissant étanche à l'intérieur de l'alésage 24.The actuating surface 22 is slidably mounted in the bore 24 of the rear portion 16b. To do this, the periphery of the base 25 is provided with two sealing beads 30 spaced axially, said beads being in sliding support tight inside the bore 24.

Par ailleurs, l'avant de la portée d'actionnement 22 est en communication avec le chemin de distribution de sorte que l'arrière du chemin de distribution soit délimité par ladite paroi d'actionnement. En outre, l'arrière de la portée d'actionnement 22 est en communication avec un conduit 31 de mise à l'air libre qui est formé dans le corps 1 du bouton poussoir, de sorte à éviter la compression d'air lors des déplacements du pointeau 21 relativement au logement 10.Furthermore, the front of the actuating surface 22 is in communication with the distribution path so that the rear of the distribution path is delimited by said actuating wall. In addition, the rear of the actuating surface 22 is in communication with a duct 31 for venting which is formed in the body 1 of the push button, so as to avoid the compression of air during displacements. the needle 21 relative to the housing 10.

Ainsi, lorsque le produit est alimenté en pression dans le chemin de distribution, celui-ci remplit le conduit annulaire amont 18 et passe par les passages 29 pour baigner l'avant de la portée d'actionnement 22. Le produit ne pouvant s'échapper par l'orifice de distribution 12 qui est fermé par la paroi distale 21 a, la pression monte et s'exerce sur la portée d'actionnement 22 qui, étant mobile, recule pour ouvrir l'alimentation dudit orifice en formant la chambre tourbillonnaire 11. Le produit sous pression tourne alors dans la chambre tourbillonnaire 11, est poussé vers le centre de ladite chambre et s'échappe par l'orifice de distribution 12 pour former l'aérosol.Thus, when the product is supplied with pressure in the distribution path, it fills the upstream annular duct 18 and passes through the passages 29 to bathe the front of the actuating surface 22. The product can not escape by the dispensing orifice 12 which is closed by the distal wall 21a, the pressure rises and is exerted on the actuating surface 22 which, being mobile, moves back to open the supply of said orifice forming the vortex chamber 11 The pressurized product then rotates in the vortex chamber 11, is pushed toward the center of said chamber and escapes through the dispensing orifice 12 to form the aerosol.

Dans le mode de réalisation représenté, la paroi distale 21 a est formée radialement sur l'extrémité distale de la tige 26, ladite extrémité étant montée en coulissement étanche dans l'alésage 24 en assurant le positionnement de ladite partie distale relativement à l'orifice de distribution 12. Pour ce faire, l'alésage 24 peut comprendre un bourrelet d'étanchéité 32 sur lequel la périphérie de l'extrémité distale de la tige 26 coulisse.In the embodiment shown, the distal wall 21a is formed radially on the distal end of the stem 26, said end being sealingly mounted in the bore 24 by positioning said distal portion relative to the orifice 12. To do this, the bore 24 may comprise a sealing bead 32 on which the periphery of the distal end of the rod 26 slides.

En position de fermeture du pointeau 21, l'extrémité distale de la tige 26 est disposée dans l'empreinte de la chambre tourbillonnaire 11 de sorte à obstruer l'orifice de distribution 12, notamment au niveau de l'alimentation de ladite chambre tourbillonnnaire par les canaux 13. Dans le mode de réalisation représenté, le diamètre extérieur de l'extrémité distale de la tige 26 est sensiblement égal au diamètre intérieur de l'empreinte de la chambre tourbillonnaire 11.In the closed position of the needle 21, the distal end of the rod 26 is disposed in the cavity of the vortex chamber 11 so as to obstruct the dispensing orifice 12, in particular at the supply of said vortex chamber by In the embodiment shown, the outside diameter of the distal end of the rod 26 is substantially equal to the inside diameter of the cavity of the vortex chamber 11.

En position d'ouverture, la chambre tourbillonnaire 11 est délimitée axialement entre l'empreinte et la paroi distale 21 a, la paroi distale 16c du canon 16 venant fermer latéralement ladite chambre par appui étanche sur l'arrière de la paroi avant 14a de la buse 14, notamment au niveau de l'empreinte des canaux d'alimentation 13.In the open position, the swirl chamber 11 is defined axially between the cavity and the distal wall 21a, the distal wall 16c of the barrel 16 closing laterally said chamber by sealing on the rear of the front wall 14a of the nozzle 14, especially at the footprint of the supply channels 13.

La paroi distale 21a du pointeau 21 présente un évidement 33 qui permet de stabiliser le vortex formé dans la chambre tourbillonnaire 11 et donc d'assurer la maîtrise ainsi que la reproductibilité de l'aérosol. En outre, l'évidement 33 permet d'éviter que le fond de la chambre tourbillonnaire 11 ne présente une convexité, due par exemple aux dispersions de fabrication ou aux déformations de la paroi distale 21a dans le temps.The distal wall 21a of the needle 21 has a recess 33 which makes it possible to stabilize the vortex formed in the vortex chamber 11 and thus to ensure the control as well as the reproducibility of the aerosol. In addition, the recess 33 prevents the bottom of the swirl chamber 11 from having a convexity, due for example to manufacturing dispersions or distortions of the distal wall 21a in time.

Selon un mode de réalisation avantageux, la profondeur maximale de l'évidement 33 peut être comprise entre 25% et 300%, notamment entre 50% et 150%, de la distance entre l'orifice de distribution 12 et la paroi distale 21a lorsque le pointeau 21 est en position d'ouverture, c'est-à-dire de la profondeur de la chambre tourbillonnaire 11. Dans le mode de réalisation représenté, la profondeur des canaux 13 d'alimentation est constante et analogue à celle de la chambre tourbillonnaire 11.According to an advantageous embodiment, the maximum depth of the recess 33 may be between 25% and 300%, especially between 50% and 150%, of the distance between the dispensing orifice 12 and the distal wall 21a when the needle 21 is in the open position, that is to say the depth of the swirl chamber 11. In the embodiment shown, the depth of the feed channels 13 is constant and similar to that of the swirl chamber 11.

Ainsi, la profondeur de l'évidement 33 est suffisante pour garantir la non convexité du fond de la chambre tourbillonnaire 11 tout en étant suffisamment limitée pour ne pas interagir de façon notable sur les caractéristiques de l'aérosol distribué, notamment en n'étant pas suffisamment grande pour former contre-chambre tourbillonnaire. Ainsi, la qualité de l'aérosol reste identique d'une fabrication à l'autre tout en conservant des cadences de fabrication et d'assemblage élevées. En variante, la profondeur de l'évidement peut être augmentée pour former contre-chambre tourbillonnaire.Thus, the depth of the recess 33 is sufficient to ensure the non-convexity of the bottom of the vortex chamber 11 while being sufficiently limited not to interact significantly on the characteristics of the aerosol dispensed, in particular by not being large enough to form swirling counter-chamber. Thus, the quality of the aerosol remains identical from one manufacture to another while maintaining high manufacturing and assembly rates. Alternatively, the depth of the recess can be increased to form vortex chamber.

Dans le mode de réalisation représenté, la paroi distale 21a est plane et l'évidement 33 est formé dans la partie centrale de ladite paroi, notamment en étant centré sur l'axe de l'orifice de distribution 12. Ainsi, le vortex formé dans la chambre tourbillonnaire 11 est stable puisque basé sur une paroi 21a virtuellement plane et reproductible du fait de la présence de l'évidement 33.In the embodiment shown, the distal wall 21a is flat and the recess 33 is formed in the central part of said wall, in particular by being centered on the axis of the dispensing orifice 12. Thus, the vortex formed in the The vortex chamber 11 is stable since it is based on a virtually planar and reproducible wall 21a because of the presence of the recess 33.

Par ailleurs, l'évidement 33 présente une géométrie de révolution, plus précisément cylindrique de révolution dans le mode de réalisation représenté. En variante, on peut prévoir une géométrie légèrement tronconique ou semi-elliptique. Selon une réalisation, l'évidement 33 peut présenter une ouverture dont la dimension est comprise entre 20% et 80% du diamètre de la chambre tourbillonnaire 11.Furthermore, the recess 33 has a geometry of revolution, more precisely cylindrical of revolution in the embodiment shown. Alternatively, a slightly frustoconical or semi-elliptical geometry can be provided. According to one embodiment, the recess 33 may have an opening whose size is between 20% and 80% of the diameter of the vortex chamber 11.

Dans un exemple de réalisation, le diamètre de l'orifice de distribution 12 est de 0,25 mm, le diamètre de la chambre tourbillonnaire 11 est de 1,6 mm, le diamètre de la paroi distale 21a du pointeau 21 est de 1,5 mm, la profondeur des canaux d'alimentation 13 et de la chambre tourbillonnaire 11 est comprise entre 0,2 et 0,5 mm, le diamètre de l'évidement 33 est au moins de 0,45 mm et sa profondeur est au minimum de 0,1 mm.In an exemplary embodiment, the diameter of the dispensing orifice 12 is 0.25 mm, the diameter of the swirling chamber 11 is 1.6 mm, the diameter of the distal wall 21 a of the needle 21 is 1, 5 mm, the depth of the supply channels 13 and the vortex chamber 11 is between 0.2 and 0.5 mm, the diameter of the recess 33 is at least 0.45 mm and its depth is at a minimum 0.1 mm.

Claims (15)

Bouton poussoir pour un système de distribution d'un produit sous pression, ledit bouton poussoir comprenant un corps (1) présentant un puits (3) de montage sur un tube (4) d'amenée du produit sous pression et un logement (10) en communication avec ledit puits, ledit logement étant pourvu d'un chemin de distribution du produit entre ledit puits et un ensemble tourbillonnaire comprenant une chambre tourbillonnaire (11) pourvue d'un orifice (12) de distribution ainsi que d'au moins un canal (13) d'alimentation de ladite chambre, ledit bouton poussoir comprenant en outre un pointeau (21) qui est monté mobile dans le logement (10) entre une position de fermeture de l'alimentation de l'orifice de distribution (12) et une position d'ouverture de ladite alimentation, ledit pointeau présentant une portée d'actionnement (22) qui est en communication avec le chemin de distribution pour permettre le déplacement dudit pointeau en position d'ouverture par mise en pression du produit dans ledit chemin, ledit bouton poussoir étant caractérisé en ce que le pointeau (21) présente une paroi distale (21a) disposée en regard de l'orifice de distribution (12) pour former le fond de la chambre tourbillonnaire (11) lorsque ledit pointeau est en position d'ouverture, ladite paroi distale présentant un évidement (33).Push button for a dispensing system for a product under pressure, said push button comprising a body (1) having a well (3) for mounting on a tube (4) for supplying the product under pressure and a housing (10) in communication with said well, said housing being provided with a product distribution path between said well and a vortex assembly comprising a vortex chamber (11) provided with a dispensing orifice (12) and at least one channel (13) supplying said chamber, said push button further comprising a needle (21) which is movably mounted in the housing (10) between a closed position of the feed of the dispensing orifice (12) and an opening position of said supply, said needle having an actuating surface (22) which is in communication with the dispensing path to enable said needle to be moved into the open position by pressurizing the product into the said path, said push button being characterized in that the needle (21) has a distal wall (21a) arranged facing the dispensing orifice (12) to form the bottom of the swirl chamber (11) when said needle is in the open position, said distal wall having a recess (33). Bouton poussoir selon la revendication 1, caractérisé en ce que la profondeur maximale de l'évidement (33) est comprise entre 25% et 300% de la distance entre l'orifice de distribution (12) et la paroi distale (21a) lorsque le pointeau (21) est en position d'ouverture.Push button according to claim 1, characterized in that the maximum depth of the recess (33) is between 25% and 300% of the distance between the dispensing orifice (12) and the distal wall (21a) when the needle (21) is in the open position. Bouton poussoir selon la revendication 1 ou 2, caractérisé en ce que la paroi distale (21 a) du pointeau (21) est plane, l'évidement (33) étant formé dans la partie centrale de ladite paroi.Push button according to claim 1 or 2, characterized in that the distal wall (21a) of the needle (21) is flat, the recess (33) being formed in the central portion of said wall. Bouton poussoir selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'évidement (33) est centré sur l'axe de l'orifice de distribution (12).Push button according to any one of claims 1 to 3, characterized in that the recess (33) is centered on the axis of the dispensing orifice (12). Bouton poussoir selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'évidement (33) présente une géométrie de révolution.Push button according to any one of claims 1 to 4, characterized in that the recess (33) has a geometry of revolution. Bouton poussoir selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le pointeau (21) est monté en translation par rapport à l'orifice de distribution (12) entre la position de fermeture dans laquelle la paroi distale (21 a) est plaquée en appui étanche contre ledit orifice pour obstruer son alimentation et la position d'ouverture dans laquelle ladite paroi distale est reculée à distance dudit orifice pour former le fond de la chambre tourbillonnaire (11).Push button according to any one of claims 1 to 5, characterized in that the needle (21) is mounted in translation relative to the dispensing orifice (12) between the closed position in which the distal wall (21 a ) is pressed against said orifice to obstruct its supply and the open position in which said distal wall is moved away from said orifice to form the bottom of the vortex chamber (11). Bouton poussoir selon la revendication 6, caractérisé en ce que la chambre tourbillonnaire (11) est formée entre une empreinte de l'ensemble de distribution et une extrémité distale du pointeau (21) sur laquelle la paroi distale (21a) est formée, ladite extrémité étant disposée dans ladite empreinte lorsque le pointeau (21) est en position de fermeture.Push button according to claim 6, characterized in that the vortex chamber (11) is formed between an impression of the dispensing assembly and a distal end of the needle (21) on which the distal wall (21a) is formed, said end being disposed in said cavity when the needle (21) is in the closed position. Bouton poussoir selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il comprend un moyen (23) de rappel élastique du pointeau (21) en position de fermeture.Push button according to any one of claims 1 to 7, characterized in that it comprises means (23) for resilient return of the needle (21) in the closed position. Bouton poussoir selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'arrière du chemin de distribution est délimité par la paroi d'actionnement (22).Push button according to any one of claims 1 to 8, characterized in that the rear of the distribution path is delimited by the actuating wall (22). Bouton poussoir selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'il comprend un canon (16) solidaire du logement (10), le pointeau (21) étant monté mobile dans un alésage (24) dudit canon, le chemin de distribution étant formé entre la périphérie dudit canon et l'intérieur dudit logement.Push button according to any one of claims 1 to 9, characterized in that it comprises a barrel (16) integral with the housing (10), the needle (21) being movably mounted in a bore (24) of said barrel, the path distribution being formed between the periphery of said barrel and the interior of said housing. Bouton poussoir selon la revendication 10, caractérisé en ce que le canon (16) présente une partie arrière (16b) dans laquelle la portée d'actionnement (22) du pointeau (21) est logée, ladite partie arrière communicant avec le chemin de distribution par l'intermédiaire d'au moins un passage (29) formé dans ledit canon.Push button according to claim 10, characterized in that the barrel (16) has a rear portion (16b) in which the actuating surface (22) of the needle (21) is housed, said rear part communicating with the distribution path via at least one passage (29) formed in said barrel. Bouton poussoir selon la revendication 11, caractérisé en ce que la portée d'actionnement (22) est montée en coulissement étanche dans la partie arrière (16b), l'avant de ladite portée étant en communication avec le chemin de distribution et l'arrière de ladite portée étant en communication avec un conduit (31) de mise à l'air libre qui est formé dans le corps (1) du bouton poussoir.Push button according to claim 11, characterized in that the actuating surface (22) is sealingly slidably mounted in the rear part (16b), the front of said seat being in communication with the distribution path and the rear said scope being in communication with a vent pipe (31) which is formed in the body (1) of the pushbutton. Bouton poussoir selon l'une quelconque des revendications 10 à 12, caractérisé en ce que le canon (16) présente une paroi distale (16c) qui est en appui sur les canaux d'alimentation (13) de la chambre tourbillonnaire (11) afin de délimiter leur fond.Push button according to any one of Claims 10 to 12, characterized in that the barrel (16) has a distal wall (16c) which bears on the supply ducts (13) of the swirl chamber (11) in order to to delimit their bottom. Bouton poussoir selon l'une quelconque des revendications 1 à 13, caractérisé en ce qu'il comprend une buse de pulvérisation (14) disposée dans le logement (10), ladite buse présentant une paroi (14a) sur l'intérieur de laquelle est formée une empreinte des canaux d'alimentation (13) ainsi que de la chambre tourbillonnaire (11) pourvue de l'orifice de distribution (12).Push button according to any one of claims 1 to 13, characterized in that it comprises a spray nozzle (14) disposed in the housing (10), said nozzle having a wall (14a) on the inside of which is formed an imprint of the supply channels (13) and the vortex chamber (11) provided with the dispensing orifice (12). Système de distribution d'un produit sous pression, comprenant un dispositif de prélèvement (6) équipé d'un tube (4) d'amenée du produit sous pression sur lequel le puits (3) d'un bouton poussoir selon l'une quelconque des revendications 1 à 14 est monté pour permettre la pulvérisation du produit.System for dispensing a product under pressure, comprising a sampling device (6) equipped with a tube (4) for supplying the pressurized product to which the well (3) of a push button according to any one Claims 1 to 14 are mounted for spraying the product.
EP10290482.8A 2009-09-10 2010-09-09 Push button for a dispensing system with pressurised product Active EP2295150B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0904371A FR2949762B1 (en) 2009-09-10 2009-09-10 PUSH BUTTON FOR A SYSTEM FOR DISTRIBUTING A PRODUCT UNDER PRESSURE.

Publications (3)

Publication Number Publication Date
EP2295150A2 true EP2295150A2 (en) 2011-03-16
EP2295150A3 EP2295150A3 (en) 2012-12-19
EP2295150B1 EP2295150B1 (en) 2016-11-09

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Application Number Title Priority Date Filing Date
EP10290482.8A Active EP2295150B1 (en) 2009-09-10 2010-09-09 Push button for a dispensing system with pressurised product

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US (1) US8413912B2 (en)
EP (1) EP2295150B1 (en)
BR (1) BRPI1003546B1 (en)
FR (1) FR2949762B1 (en)

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FR3078271A1 (en) * 2018-02-27 2019-08-30 Albea Services DISTRIBUTION HEAD WITH TURNED SHRUB CHAMBER FOR A DISTRIBUTION SYSTEM

Also Published As

Publication number Publication date
BRPI1003546B1 (en) 2020-08-18
BRPI1003546A2 (en) 2013-01-15
US8413912B2 (en) 2013-04-09
FR2949762A1 (en) 2011-03-11
US20110057057A1 (en) 2011-03-10
FR2949762B1 (en) 2011-12-09
EP2295150B1 (en) 2016-11-09
EP2295150A3 (en) 2012-12-19

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