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EP0499520B1 - Spraying or dispensing device for a fluid product comprising a sliding element within its inlet port - Google Patents

Spraying or dispensing device for a fluid product comprising a sliding element within its inlet port Download PDF

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Publication number
EP0499520B1
EP0499520B1 EP92400340A EP92400340A EP0499520B1 EP 0499520 B1 EP0499520 B1 EP 0499520B1 EP 92400340 A EP92400340 A EP 92400340A EP 92400340 A EP92400340 A EP 92400340A EP 0499520 B1 EP0499520 B1 EP 0499520B1
Authority
EP
European Patent Office
Prior art keywords
rod
elongate member
valve
inlet passage
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92400340A
Other languages
German (de)
French (fr)
Other versions
EP0499520A1 (en
Inventor
Claude Jouillat
Michel Brunet
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.)
Societe Technique de Pulverisation SA STEP
Original Assignee
Societe Technique de Pulverisation SA STEP
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 Societe Technique de Pulverisation SA STEP filed Critical Societe Technique de Pulverisation SA STEP
Publication of EP0499520A1 publication Critical patent/EP0499520A1/en
Application granted granted Critical
Publication of EP0499520B1 publication Critical patent/EP0499520B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005Components or details
    • B05B11/0027Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
    • B05B11/0029Valves not actuated by pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/30Dip tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005Components or details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005Components or details
    • B05B11/0078Arrangements for separately storing several components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-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
    • B05B11/10Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001Piston pumps
    • B05B11/1016Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • B05B11/1018Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element and the controlling element cooperating with means for opening or closing the inlet valve
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005Components or details
    • B05B11/0037Containers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-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
    • B05B11/10Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042Components or details
    • B05B11/1059Means for locking a pump or its actuation means in a fixed position

Definitions

  • the present invention relates to a device for spraying or distributing a fluid product comprising a member sliding in its inlet orifice. More particularly, the present invention relates to miniaturized pumps or valves which can be held in the hand, intended to spray or distribute a fluid product, which may be liquid or pasty, such as a perfume, a cosmetic product or a pharmaceutical product. Such pumps or valves are generally actuated using a finger, but can also be actuated by mechanical and / or electrical means.
  • the pumps or valves have an inlet port through which they communicate with a product reservoir.
  • this intake orifice is equipped with a plunger tube fitted by force into an inlet pipe of the pump or valve body, and therefore integral with the pump body or the valve.
  • the elongated member can be linked to the actuating member.
  • the device further comprises said reservoir, and said elongated member exerts on each actuation of said actuating member a remote control function of an organ disposed in the reservoir, such as a valve or a valve. .
  • the elongated member is a rod which is pushed towards the reservoir only during the first actuation of the actuating member, said rod comprises a part in sealed peripheral contact with the inlet passage before the first actuation of the actuating member, so that the inlet passage is closed before the first actuation, and the rod comprises a part having communication means adapted to allow the passage of the product in the inlet passage of the body, after the first actuation of the actuating means.
  • Said communication means can be longitudinal grooves formed over part of the length of the rod, outside of said rod.
  • the device further comprises said reservoir, and said reservoir is separated into at least two compartments by at least one separation means, and the elongated member is adapted to open said separation means during the first actuation of the actuator.
  • the separation means can be a tearable membrane or a plug.
  • the compartments may contain gases under pressure, be placed under vacuum, and / or contain products which mix at the time of the first actuation of the actuator.
  • the friction between the elongated member and the inlet passage is such that the elongated member is not moved as long as it is subjected to a stress less than about 49N (5kg).
  • the elongated member is a tube, and the tube has one end close to the valve member which is cut so that the support of the valve member on the tube does not is not waterproof.
  • FIGS 1 to 6 show an example of a pump according to a first embodiment of the invention.
  • a manual pump for dispensing or spraying a fluid product is described in documents FR 2 305 241 and 2 314 772.
  • the various parts of the pump are made of plastic, outside the spring. metallic.
  • the pump of FIG. 1 comprises a hollow cylindrical pump body 1, having an axis of revolution.
  • the pump body 1 has a first open end 11 provided with a means of attachment to a product reservoir, such as for example a crimpable metal capsule 13, and a second end 12 intended to be located inside the reservoir. product.
  • a product reservoir such as for example a crimpable metal capsule 13
  • the pump body 1 Near its end 12, the pump body 1 has an annular bottom 15 pierced with a central inlet orifice 16.
  • the annular bottom 15 is extended towards the end 11 of the pump body by a cylindrical wall 17 of diameter reduced, itself extended radially outward by a widening 18 which extends to the end 11 by a substantially cylindrical wall 19.
  • the bottom 15 can be extended axially outward from the pump body - this is that is to say towards the inside of the product reservoir - by a tubular conduit 14, up to an inlet end 14c of said tubular conduit, and the cylindrical wall 17 is extended axially towards the end 11 by a tubular endpiece 4 which extends over a certain distance inside the pump body 1.
  • the cylindrical wall 17 of reduced diameter and the widening 18 could be omitted without departing from the scope of the present invention: in this case, the tubular end piece 4 would extend from the bottom 15 towards the end 11, and the bottom 15 would be directly linked to the cylindrical wall 19.
  • a piston 2 slides in the cylindrical wall 19 of the pump body 1, defining with the pump body 1 a pump chamber 20.
  • the piston 2 is extended towards the end 11 of the pump body 1 by a push rod 3 which extends beyond said end 11.
  • the push rod 3 has a central or axial channel 3a, which opens on the one hand into the pump chamber 20, and on the other hand outside the pump body 1. From the pump chamber 20, the channel 3a first has a wide part, then a narrowing 7a forming a valve seat, as will be seen below.
  • the pump further comprises a valve 6 disposed between the piston 2 and the bottom 15 of the pump body 1, and urged elastically towards the piston 2 by a spring 10 which bears on the bottom 15 of the pump body.
  • the valve 6 comprises an axial needle 7 applied elastically to the valve seat 7a of the channel 3a, under the stress of the spring 10.
  • the valve 6 is provided with a cylindrical skirt 8 extending over a certain distance towards the bottom 15 of the pump body, and adapted to be fitted onto the tubular end piece 4.
  • the skirt 8 may include an inner peripheral sealing lip 8a adapted to perfect the sealing of the fitting of said skirt 8 on the end piece 4.
  • the skirt 8 can be guided by external ribs 8 which slide in the pump body 1. It will be noted that the skirt 8 could be adapted to be fitted inside the end piece 4 or the cylindrical wall 17, without departing from the scope of the present invention.
  • the end 11 of the pump body is finally provided with an attached ferrule 21, fixed to the pump body 1, which serves as a stop for the movement of the piston 3 towards said end 11.
  • the pump of Figure 1 operates as described below. In the description of this operation, we will assume the pump chamber 20 filled with product to be dispensed or sprayed.
  • the spring 10 pushes the valve 6 upwards, at the same time driving the piston 2.
  • the pump chamber 20 is isolated by fitting the the skirt 8 on the tubular endpiece 4, and by application of the needle 7 on its seat 7a.
  • the rise of the piston 2 therefore creates a depression.
  • the skirt 8 emerges from the nozzle 4. Under the effect of the vacuum prevailing in the pump chamber 20, the product contained in the tank is then sucked towards said pump chamber, which is refilled.
  • a cylindrical rod 25 is slidably mounted in the pump inlet duct 14, having one end 25a disposed inside the pump body 1, and one end 25b disposed outside said pump body 1.
  • the inner end 25a of the rod is placed in abutment against the valve 6 of the pump.
  • the inlet pipe of the pump can comprise a peripheral inner sealing cord 14a.
  • the diameter of the tubular inlet pipe 14 is slightly greater than the diameter of the rod 25, so that only the sealing bead 14a is in elastic abutment against the rod 25, which limits the friction between said rod and the conduit 14 and allows the rod to slide under sufficient force, while keeping it in place during storage or editing.
  • the rod 25 could possibly be replaced by a dip tube, without departing from the scope of the present invention.
  • the rod 25 is provided with longitudinal grooves 26, which allow communication between the pump chamber 20 and a product reservoir.
  • These grooves can be formed over the entire length of the rod 25, but more advantageously, the grooves 26 are not formed over the entire length of the rod 25, so that said rod 25 has a smooth portion 27 not grooved, placed at the level of the sealing bead 14a of the conduit 14 during pump assembly.
  • the sealing bead 14a is in elastic peripheral support on the non-grooved part 27 of the rod 25 , so that the pump chamber 20 is isolated from the product contained in the reservoir.
  • the product contained in the tank therefore does not risk being polluted by the springs or lubricants of the pump during storage. The risks of leakage of said product and entry of air into the tank are also limited.
  • the outer end 25b of the rod 25 can be cut at an angle or at a bevel, so as to form a point.
  • the rod 25 can also be provided with hollow longitudinal grooves 28, or possibly longitudinal ribs (28a, FIG. 8c) projecting outside the rod, or other reliefs, which extend over a certain distance from the vicinity of its end 25b, as shown in section in FIG. 4: the role of the grooves 28 will appear clearly in the following description.
  • the end 25b of the rod 25 can be formed in a warhead, always with longitudinal grooves 28.
  • the end 25b can be of upper section to the section of the rod 25, forming a pestle.
  • the rod 25, or possibly the dip tube will preferably be made of a rigid material, such as, for example, acetal resin, PBT or polypropylene.
  • the rod 25 is pushed axially towards the reservoir, by pressing the valve 6 on its inner end 25a.
  • the valve 6 By this movement, one can for example pierce a membrane or move a plug separating the product reservoir into two compartments, as will be seen in the application examples given below.
  • the rod 25 no longer moves. It is thus possible to mix two products at the time of use, at least one of the products being liquid, and one of the products possibly being a powder or a lyophilisate to be mixed with a liquid.
  • the reservoir of product to be dispensed can be pressurized at the time of use, thus avoiding losses. pressure leakage at the tank seal during storage.
  • the axial movement of the rod 25 brings part of the grooves 26 out of the tubular conduit 14, that is to say into the reservoir of product.
  • the grooves 26 constitute a passage between the product reservoir and the pump chamber 20, allowing the suction of product at the end of each actuation of the pump.
  • the rod 25, or possibly a dip tube placed in abutment against the valve 6 or in the vicinity of said valve, prevents actuation accidental pump under low stress applied to the push rod 3 of said pump, for example during transport or handling, thanks to the friction existing between the rod 25 and the bead 14a sealing the conduit 14.
  • these friction will be sufficient to prevent movement of the rod 25 under a stress less than 49 N (5 kg), said friction may have another value without departing from the scope of the present invention.
  • the rod 25 may be integral with the valve 6, so that it slides axially in the intake duct 14 each time the pump is actuated, following the movement of the valve 6. It is thus possible to use the rod 25 to control a member, such as a valve or valve, each time the pump is actuated.
  • the grooves 26 extend over the entire length of the rod 25 or at least over a length sufficient for said ribs 26 to allow communication between the pump chamber 20 and the product reservoir when the pump is in its rest position.
  • the rod 25 can also slide without sealing in the intake duct 14.
  • the valve 6 can push the rod 25 out of the intake duct 14 at the end of the first actuation of the pump, after said rod 25 has fulfilled its function of perforating a membrane or moving a plug or another member, so that said rod 25 falls into the product reservoir and can then serve as an agitator to facilitate the homogenization of said product.
  • the invention is not limited to the particular pump of FIG. 5: it applies to any pump or to any valve in which the rod 25, or a dip tube, can extend to the interior of the pump or valve to the vicinity of a movable member sliding axially in said pump or valve when said pump or valve is actuated.
  • FIGs 9a to 9c show a first example of use of the pump of Figure 1.
  • the pump body 1 is mounted on a neck 36 of a tank 30 having two compartments 31 and 32 separated by a tearable membrane 33.
  • the rod 25 penetrates into the compartment 31 of the reservoir 30, and the outer end 25b of said rod is located in the vicinity of the tearable membrane 33.
  • the sealing bead 14a of the intake duct 14 of the pump is in contact with an ungrooved part 27 of the rod, so that the pump chamber 20 is isolated from the compartment 31 of the reservoir 30 until the pump has been activated.
  • compartment 31 contains a solvent and compartment 32 contains a lyophilisate.
  • each of the compartments 31, 32 can contain any product, in liquid, pasty form, in the form of powder, or in solid form such as a lyophilisate: at least one of the compartments 31, 32 must nevertheless contain a liquid product, in order to facilitate the mixing of the two products during the perforation of the membrane, as will be seen below.
  • the compartment 32 can be sealed in a perfectly leaktight manner, and contain a pressurized gas, in particular an inert gas such as nitrogen, in order to avoid gas leaks during storage of the device.
  • the compartment 32 may also contain a product to be mixed with the content of the compartment 31, in addition to the gas.
  • the compartment 31 can also contain a gas under pressure, in addition to the product to be sprayed or dispensed that it contains.
  • one of the compartments can be placed under vacuum or under vacuum.
  • the reservoir comprises a bottomless enclosure 31 a delimiting the compartment 31 and on which the pump is mounted, said enclosure possibly being made of plastic.
  • the reservoir 30 further comprises a socket 32a assembled to the enclosure 31a, for example by screwing, which closes the enclosure 31a and which delimits the compartment 32.
  • the socket 32a can be made of any material, for example glass.
  • the sleeve 32a is closed by a plug 34 provided with a central orifice 34a, placed in the extension of the rod 25 when the sleeve 32a is assembled on the enclosure 31a, and the tearable membrane 33 is tightly fixed on the plug 34 by closing the opening 34a.
  • the sleeve 32 can be used for lyophilization of the product in a well known manner.
  • the product it suffices to place the product to be lyophilized in the sleeve 32 and to partially engage the plug 34 on said sleeve without completely closing the compartment 32.
  • compartment 32 is then closed by fully depressing the plug 34, then the socket 32a is assembled on the enclosure 32a, the compartment 31 is filled with solvent, and the pump body 1 is assembled on the reservoir 30.
  • the compartment 32 can also be filled with pressurized gas before the plug 34 is fully inserted.
  • compartment 31 can optionally be subsequently filled with pressurized gas, for example as explained below with reference to FIG. 13. But in this case, the grooves 26 of the rod 25 must extend from the pump chamber 20 to beyond the intake duct 14, in order to make the compartment 31 communicate with the pump chamber 20 before the first pump activation.
  • FIG. 9b represents a rod 25 having an end 25b cut into a point, but it could have any other shape, without leaving the frame of the present invention.
  • the axial movement of the rod 25 causes the grooves 26 of the rod to appear in the compartment 31, so that said grooves 26 allow communication between the reservoir 20 and the pump chamber 20.
  • the device can be returned to the position shown in FIG. 9c, that is to say with the pump located below the reservoir 30.
  • the product to be sprayed or dispensed then passes into the compartment 31, so that it can be sucked into the pump chamber 20 through the grooves 26 to the end of each actuation of the pump.
  • the enclosure 31a comprises a peripheral sealing lip 35 applied elastically against the conduit 14 of the pump intake, in order to prevent product from passing into the volume between the pump body 1 and the neck 36 from reservoir 30, where said product could no longer be sucked up by the pump.
  • Figures 10a and 10b show an alternative embodiment of the example of Figures 9a to 9c, in which the reservoir 30 comprises an enclosure 31a, made for example of plastic, and having a cylindrical part 37 extending between an open end 37a and a neck 36 on which the pump body 1 is mounted.
  • the enclosure 31a may comprise a peripheral sealing lip 35 applied elastically against the intake duct 14 of the pump.
  • the reservoir 30 further comprises a hollow cylinder 38 adapted to fit into the cylindrical part 37 of the enclosure 31a, in sealed contact with said cylindrical part 37.
  • This hollow cylinder 38 is divided into two compartments 31, 32 by a partition 39 annular, extending from said hollow cylinder 38 inwardly.
  • the annular partition 39 delimits a central orifice 39a, closed by a tearable membrane 33, and located in the extension of the rod 25.
  • the enclosure 31a may further comprise a slot 37b extending axially on its cylindrical part 37, over a certain distance from the open end 37a.
  • the slot 37b then allows the communication of compartment 31 with the outside during freeze-drying, then the enclosure 31a is fully pressed onto the cylinder 38, which isolates the compartment 31.
  • the compartment 32 can then be closed after it has also been filled, for example by crimping a metal capsule 40 on the open end 37a of the enclosure 31a, a solid disc-shaped seal 41 being placed between the metal capsule 40 and the end 37a of the enclosure 31a.
  • the annular partition 39 can be raised towards the center, so that the lyophilisate, or another powder, accumulates around the membrane 33 but not on said membrane, so as not to hinder the perforation of said membrane when the pump is first activated.
  • FIGS 11a and 11b show a variant of the device of Figures 10a and 10b, in which the central orifice 39a of the annular wall 39 is closed not by a tearable membrane but by a plug 42 fitted in said orifice 39a.
  • the rod 25 pushes the plug 42 back into the compartment 32, which allows communication between the compartments 31 and 32.
  • the plug 25 It is advantageous for the plug 25 to be quite bulky: thus, when it is pushed back into the compartment 32 by the rod 25, it violently drives the product contained in the compartment 32 towards the compartment 31, which facilitates the mixing of the products.
  • the end 25b of the rod 25 will be non-pointed, preferably enlarged, so as to push the plug 42 well.
  • Figures 12a, 12b and 12c show a device similar to that of Figures 10a, 10b, 11a and 11b, in which a dip tube 5 is slidably mounted in the intake duct 14 of the pump.
  • the outer end 5a of the tube 5 has a narrowed portion 43.
  • the compartment 32 comprises a portion of tube 44 extending axially between an upper end 44a adjacent to the membrane 33 and a lower end 44b in contact with the seal 41 forming the bottom of the compartment 32.
  • the tube portion 44 is kept centered in the compartment 32 by at least three radial arms 45 extending from said tube portion 44 to the hollow cylinder 38, and placed in contact with the partition annular 39.
  • the lower end 44b of the tube portion 44 is notched or bevelled, or has a notch, so as not to be applied sealingly on point 41. In general, the end 44b of the tube portion 44 is therefore not perpendicular to the axis of said tube portion 44.
  • the upper end 44a of said tube portion 44 forms a housing 44c complementary to the narrowed part 43 of the dip tube 5.
  • the dip tube 5 punctures the membrane 33 and the narrowed part 43 fits tightly in the housing 44c: the tube 5 is then coupled to the tube portion 44, so that the pump can suck the contents of compartment 32 through the lower end 44b, resulting from the mixing of the products initially contained in compartments 31 and 32.
  • FIG. 13 represents a pump similar to that of FIG. 1, no longer comprising a rod 25 slidably mounted in the conduit 14, but a dip tube 5.
  • the dip tube could be replaced by a rod (25) having grooves longitudinal extending from a portion of the inner rod (25) of the pump to the interior of the reservoir so as to constitute a passage between the pump chamber 20 and the reservoir before the first actuation of the pump.
  • the pump of Figure 13 further comprises a rod 7b extending the needle 7 and projecting a distance H1 beyond the outer end of the hollow rod 3.
  • the skirt 8 is separated d 'An axial distance H2 from the tubular end piece 4, H2 being greater than H1.
  • Such a configuration easily allows the filling of gas, in particular nitrogen, of the product reservoir on which the pump is mounted.
  • transient overpressures of the injected gas can cause accidental fitting of the skirt 8 on the nozzle 4: the pressure of the gas on the valve 6 then maintains the fitting, so that the communication with the tank remains cut and the gas filling is not done.
  • an inner end 5c of the dip tube 5 can be placed in the vicinity of the valve 6, and in any case separated from said valve 6 by a distance H3 less than H2 or possibly equal to zero.
  • Said inner end 5c is advantageously provided with a notch 5d or cut at an angle or at a bevel.
  • the friction of the sealing bead 14a on the plunger tube 5 is sufficient to retain the tube 5 during such overpressures: in fact, as long as the skirt 8 is not fitted on the end piece 4, the gas can flow towards the reservoir, so that the force thus exerted on the valve 6 in the direction of the tube 5 is limited.
  • the spring 10 helps the tube 5 to retain the valve 6.
  • the friction between the dip tube 5 and the sealing bead 14a, or more generally between the dip tube 5 and the intake duct 14, will be sufficient to prevent movement of the rod 25 under a stress of less than 49 N (5 kg), said friction being able to have another value without departing from the scope of the present invention.
  • the dip tube 5 is pushed back towards the product reservoir. Before this first voluntary actuation, the dip tube 5 constitutes a safety against accidental actuation of the pump, as explained above with regard to the pump in FIG. 5.
  • the dip tube could be replaced by a solid rod 25, provided that it has longitudinal grooves 26 over its entire length, or that it slides without sealing in the intake duct 14.

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Description

La présente invention concerne un dispositif de pulvéristion ou de distribution de produit fluide comportant un organe coulissant dans son orifice d'admission. Plus particulièrement, la présente invention concerne des pompes ou valves miniaturisées pouvant être tenues à la main, destinées à pulvériser ou distribuer un produit fluide, pouvant être liquide ou pâteux, tel qu'un parfum, un produit cosmétique ou un produit pharmaceutique. De telles pompes ou valves sont généralement actionnées à l'aide d'un doigt, mais peuvent aussi être actionnées par des moyens mécaniques et/ou éléctriques.The present invention relates to a device for spraying or distributing a fluid product comprising a member sliding in its inlet orifice. More particularly, the present invention relates to miniaturized pumps or valves which can be held in the hand, intended to spray or distribute a fluid product, which may be liquid or pasty, such as a perfume, a cosmetic product or a pharmaceutical product. Such pumps or valves are generally actuated using a finger, but can also be actuated by mechanical and / or electrical means.

Les pompes ou valves comportent un orifice d'admission par lequel elles communiquent avec un réservoir de produit. Dans certains cas, cet orifice d'admission est équipé d'un tube plongeur emmanché à force dans une tubulure d'entrée du corps de pompe ou de valve, et donc solidaire du corps de pompe ou de la valve.The pumps or valves have an inlet port through which they communicate with a product reservoir. In certain cases, this intake orifice is equipped with a plunger tube fitted by force into an inlet pipe of the pump or valve body, and therefore integral with the pump body or the valve.

La présente invention a pour objet un dispositif de pulvérisation ou de distribution de produit fluide, comportant un moyen de commande de la sortie du produit monté sur un réservoir dudit produit, ledit moyen de commande comportant :

  • un corps,
  • un organe d'actionnement dudit moyen de commande, monté coulissant par rapport au corps,
  • un passage d'entrée communiquant avec le réservoir, et permettant l'entrée du produit dans le corps,
  • un organe allongé monté coulissant dans ledit passage d'entrée et pénétrant dans le réservoir ledit organe allongé étant déplaçable avec l'organe d'actionnement au moins en direction du réservoir et au moins lors du premier actionnement de l'organe d'actionnement,
caractérisé en ce que l'organe allongé exerce une action mécanique sur un élément solidaire du réservoir lorsque ledit organe allongé est déplacé, de façon à modifier l'état dudit élément.The subject of the present invention is a device for spraying or distributing a fluid product, comprising a means for controlling the outlet of the product mounted on a reservoir of said product, said control means comprising:
  • a body,
  • an actuating member of said control means, slidably mounted relative to the body,
  • an inlet passage communicating with the reservoir, and allowing the entry of the product into the body,
  • an elongated member mounted to slide in said inlet passage and entering the reservoir, said elongated member being movable with the actuating member at least in the direction of the reservoir and at least during the first actuation of the actuating member,
characterized in that the elongated member exerts a mechanical action on an element integral with the reservoir when said elongated member is moved, so as to modify the state of said element.

L'organe allongé peut être lié à l'organe d'actionnement. Selon une forme de réalisation, le dispositif comporte en outre ledit réservoir, et ledit organe allongé exerce à chaque actionnement dudit organe d'actionnement une fonction de commande à distance d'un organe disposé dans le réservoir, tel qu'une valve ou un clapet.The elongated member can be linked to the actuating member. According to one embodiment, the device further comprises said reservoir, and said elongated member exerts on each actuation of said actuating member a remote control function of an organ disposed in the reservoir, such as a valve or a valve. .

Selon une forme de réalisation, l'organe allongé est une tige qui est poussée vers le réservoir uniquement lors du premier actionnement de l'organe d'actionnement, ladite tige comporte une partie en contact périphérique étanche avec le passage d'entrée avant le premier actionnement de l'organe d'actionnement, de sorte que le passage d'entrée est obturé avant le premier actionnement, et la tige comporte une partie ayant des moyens de communication adaptés à permettre le passage du produit dans le passage d'entrée du corps, après le premier actionnement du moyen d'actionnement. Lesdits moyens de communication peuvent être des rainures longitudinales formées sur une partie de la longueur de la tige, à l'extérieur de ladite tige.According to one embodiment, the elongated member is a rod which is pushed towards the reservoir only during the first actuation of the actuating member, said rod comprises a part in sealed peripheral contact with the inlet passage before the first actuation of the actuating member, so that the inlet passage is closed before the first actuation, and the rod comprises a part having communication means adapted to allow the passage of the product in the inlet passage of the body, after the first actuation of the actuating means. Said communication means can be longitudinal grooves formed over part of the length of the rod, outside of said rod.

Selon une forme de réalisation, le dispositif comporte en outre ledit réservoir, et ledit réservoir est séparé en au moins deux compartiments par au moins un moyen de séparation, et l'organe allongé est adapté à ouvrir ledit moyen de séparation lors du premier actionnement de l'organe d'actionnement.According to one embodiment, the device further comprises said reservoir, and said reservoir is separated into at least two compartments by at least one separation means, and the elongated member is adapted to open said separation means during the first actuation of the actuator.

Le moyen de séparation peut être une membrane déchirable ou un bouchon. Les compartiments peuvent contenir des gaz sous pression, être mis en dépression, et/ou contenir des produits qui se mélangent au moment du premier actionnement de l'organe d'actionnement.The separation means can be a tearable membrane or a plug. The compartments may contain gases under pressure, be placed under vacuum, and / or contain products which mix at the time of the first actuation of the actuator.

Selon une forme de réalisation avantageuse,

  • un organe de clapet est monté coulissant dans le corps et est interposé entre l'organe d'actionnement et l'organe allongé,
  • un moyen élastique sollicite l'organe de clapet de façon à l'éloigner de l'organe allongé en direction de l'organe d'actionnement, ce qui sollicite le moyen d'actionnement vers une position de repos,
  • le corps comporte une paroi cylindrique contre laquelle l'organe de clapet s'engage en emboîtement étanche, enfermant le passage d'entrée, lorsqu'il est déplacé d'une première distance H2 depuis sa position de repos vers le passage d'entrée,
  • le moyen d'actionnement comporte un piston coulissant avec étanchéité dans le corps et un passage de sortie formant un siège de soupape, l'organe de clapet comporte un pointeau adapté à s'appliquer de façon étanche contre le siège de soupape en fermant le passage de sortie sous l'action du moyen élastique,
  • l'organe allongé n'est pas en contact étanche avec le passage d'entrée l'organe allongé coulisse avec frottement dans ledit passage d'entrée,
  • avant le premier actionnement du moyen d'actionnement, l'organe allongé est séparé de l'organe de clapet par une deuxième distance H3 qui est supérieure ou égale à zéro et strictement inférieure à la première distance H2,
  • de sorte que, lorsque l'organe de clapet est déplacé vers l'organe allongé d'une troisième distance H1, strictement inférieure à la première distance H2, et qu'on injecte du gaz sous pression par le passage d'entrée, ce gaz peut s'écouler vers le passage d'entrée, et l'organe allongé limite le mouvement de l'organe de clapet vers le passage d'entrée contre la sollicitation appliquée à l'organe de clapet par l'écoulement gazeux.
According to an advantageous embodiment,
  • a valve member is slidably mounted in the body and is interposed between the actuating member and the elongated member,
  • an elastic means urges the valve member so as to move it away from the elongated member in the direction of the actuating member, which urges the actuating means towards a rest position,
  • the body has a cylindrical wall against which the valve member engages in a sealed socket, enclosing the inlet passage, when it is moved a first distance H2 from its rest position towards the inlet passage,
  • the actuating means comprises a sliding piston with sealing in the body and an outlet passage forming a valve seat, the valve member comprises a needle adapted to apply sealingly against the valve seat by closing the passage exit under the action of the elastic means,
  • the elongated member is not in leaktight contact with the inlet passage the elongated member slides with friction in said inlet passage,
  • before the first actuation of the actuation means, the elongated member is separated from the valve member by a second distance H3 which is greater than or equal to zero and strictly less than the first distance H2,
  • so that when the valve member is moved towards the elongated member by a third distance H1, strictly less than the first distance H2, and gas under pressure is injected through the inlet passage, this gas can flow to the inlet passage, and the elongated member limits movement of the valve member to the inlet passage against the stress applied to the valve member by the gas flow.

Par exemple, les frottements entre l'organe allongé et le passage d'entrée sont tels que l'organe allongé n'est pas déplacé tant qu'il est soumis à une sollicitation inférieure à environ 49N (5kg). Dans un cas particulier de cette forme de réalisation, l'organe allongé est un tube, et le tube comporte une extrémité proche de l'organe de clapet qui est découpée de façon que l'appui de l'organe de clapet sur le tube ne soit pas étanche.For example, the friction between the elongated member and the inlet passage is such that the elongated member is not moved as long as it is subjected to a stress less than about 49N (5kg). In a particular case of this embodiment, the elongated member is a tube, and the tube has one end close to the valve member which is cut so that the support of the valve member on the tube does not is not waterproof.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description suivante de plusieurs formes de réalisation de l'invention, données à titre d'exemples non limitatifs, en regard des dessins joints.Other characteristics and advantages of the present invention will appear on reading the following description of several embodiments of the invention, given by way of nonlimiting examples, with reference to the accompanying drawings.

Sur les dessins :

  • la figure 1 est une vue en coupe d'une pompe selon une forme de réalisation de l'invention, équipée d'une tige coulissante, ladite tige coulissante étant non coupée,
  • la figure 2 est une coupe selon la ligne II-II de la tige coulissante de la figure 1,
  • la figure 3 est une coupe selon la ligne III-III de la tige coulissante de la figure 1,
  • la figure 4 est une coupe selon la ligne IV-IV de la tige coulissante de la figure 1,
  • la figure 5 est une vue en coupe d'une variante de la pompe de la figure 1,
  • la figure 6 est une vue en coupe de la pompe de la figure 1, en fin d'actionnement,
  • la figure 7 est une vue de détail du conduit d'admission de la pompe de la figure 1,
  • la figure 8a est une vue en élévation d'une variante de l'extrémité extérieure de la tige coulissante équipant la pompe de la figure 1,
  • la figure 8b est une vue en élévation d'une autre variante de l'extrémité extérieure de la tige coulissante équipant la pompe de la figure 1,
  • la figure 8c est une vue en élévation d'une autre variante de l'extrémité extérieure de la tige coulissante équipant la pompe de la figure 1,
  • la figure 9a est une vue en coupe d'un exemple de dispositif de pulvérisation ou de distribution utilisant la pompe de la figure 1, en position de stockage,
  • la figure 9b est une vue en coupe du dispositif de la figure 9a, après un premier actionnement de la pompe,
  • la figure 9c est une vue en coupe du dispositif de la figure 9a, en position d'utilisation,
  • la figure 10a est une vue en coupe d'un autre exemple de dispositif de pulvérisation ou de distribution utilisant la pompe de la figure 1, pendant le conditionnement d'un lyophilisat,
  • la figure 10b est une vue en coupe du dispositif de la figure 10a, en position de stockage,
  • la figure 11a est une vue en coupe d'un autre exemple de dispositif de pulvérisation ou de distribution utilisant la pompe de la figure 1, en position de stockage,
  • la figure 11b est une vue en coupe du dispositif de la figure 11a, en position d'utilisation,
  • la figure 12a est une vue en coupe d'un autre exemple de dispositif de pulvérisation ou de distribution utilisant la pompe de la figure 5, en position de stockage,
  • la figure 12b est une vue en coupe du dispositif de la figure 12a, en position d'utilisation,
  • la figure 12c est une vue partielle en coupe selon la ligne C-C du dispositif de la figure 12a, et
  • la figure 13 est une vue en coupe d'une pompe selon une autre forme de réalisation de l'invention.
In the drawings:
  • FIG. 1 is a sectional view of a pump according to an embodiment of the invention, equipped with a sliding rod, said sliding rod being uncut,
  • FIG. 2 is a section along line II-II of the sliding rod of FIG. 1,
  • FIG. 3 is a section along line III-III of the sliding rod of FIG. 1,
  • FIG. 4 is a section along line IV-IV of the sliding rod of FIG. 1,
  • FIG. 5 is a sectional view of a variant of the pump of FIG. 1,
  • FIG. 6 is a sectional view of the pump of FIG. 1, at the end of actuation,
  • FIG. 7 is a detailed view of the intake duct of the pump in FIG. 1,
  • FIG. 8a is an elevation view of a variant of the outer end of the sliding rod fitted to the pump of FIG. 1,
  • FIG. 8b is an elevation view of another variant of the outer end of the sliding rod fitted to the pump of FIG. 1,
  • FIG. 8c is an elevation view of another variant of the outer end of the sliding rod fitted to the pump of FIG. 1,
  • FIG. 9a is a sectional view of an example of a spraying or dispensing device using the pump of FIG. 1, in the storage position,
  • FIG. 9b is a sectional view of the device of FIG. 9a, after a first actuation of the pump,
  • FIG. 9c is a sectional view of the device of FIG. 9a, in the position of use,
  • FIG. 10a is a sectional view of another example of a spraying or dispensing device using the pump of FIG. 1, during the packaging of a lyophilisate,
  • FIG. 10b is a sectional view of the device of FIG. 10a, in the storage position,
  • FIG. 11a is a sectional view of another example of a spraying or dispensing device using the pump of FIG. 1, in the storage position,
  • FIG. 11b is a sectional view of the device of FIG. 11a, in the position of use,
  • FIG. 12a is a sectional view of another example of a spraying or dispensing device using the pump of FIG. 5, in the storage position,
  • FIG. 12b is a sectional view of the device of FIG. 12a, in the position of use,
  • FIG. 12c is a partial sectional view along the line CC of the device of FIG. 12a, and
  • Figure 13 is a sectional view of a pump according to another embodiment of the invention.

Les figures 1 à 6 représentent un exemple de pompe selon une première forme de réalisation de l'invention. Une telle pompe manuelle de distribution ou de pulvérisation de produit fluide est décrite dans les documents FR 2 305 241 et 2 314 772. Sauf mention contraire, dans la description, les différentes pièces de la pompe sont réalisées en matière plastique, en dehors du ressort métallique. Figures 1 to 6 show an example of a pump according to a first embodiment of the invention. Such a manual pump for dispensing or spraying a fluid product is described in documents FR 2 305 241 and 2 314 772. Unless otherwise stated, in the description, the various parts of the pump are made of plastic, outside the spring. metallic.

La pompe de la figure 1 comporte un corps de pompe 1 cylindrique creux, présentant un axe de révolution. Le corps de pompe 1 comporte une première extrémité 11 ouvert dotée d'un moyen de fixation à un réservoir de produit, tel que par exemple une capsule métallique 13 sertissable, et une seconde extrémité 12 destinée à se trouver à l'intérieur du réservoir de produit. Au voisinage de son extrémité 12, le corps de pompe 1 présente un fond annulaire 15 percé d'un orifice central d'admission 16. Le fond annulaire 15 est prolongé vers l'extrémité 11 du corps de pompe par une paroi cylindrique 17 de diamètre réduit, elle-même prolongée radialement vers l'extérieur par un élargissement 18 qui se prolonge jusqu'à l'extrémité 11 par une paroi sensiblement cylindrique 19. Le fond 15 peut être prolongé axialement vers l'extérieur du corps de pompe - c est-à-dire vers l'intérieur du réservoir de produit - par un conduit tubulaire 14, jusqu'à une extrémité d'entrée 14c dudit conduit tubulaire, et la paroi cylindrique 17 est prolongée axialement vers l'extrémité 11 par un embout tubulaire 4 qui s'étend sur une certaine distance à l'intérieur du corps de pompe 1. On notera que la paroi cylindrique 17 de diamètre réduit et l'élargissement 18 pourraient être omis sans sortir du cadre de la présente invention : dans ce cas, l'embout tubulaire 4 s'étendrait à partir du fond 15 vers l'extrémité 11, et le fond 15 serait directement lié à la paroi cylindrique 19.The pump of FIG. 1 comprises a hollow cylindrical pump body 1, having an axis of revolution. The pump body 1 has a first open end 11 provided with a means of attachment to a product reservoir, such as for example a crimpable metal capsule 13, and a second end 12 intended to be located inside the reservoir. product. Near its end 12, the pump body 1 has an annular bottom 15 pierced with a central inlet orifice 16. The annular bottom 15 is extended towards the end 11 of the pump body by a cylindrical wall 17 of diameter reduced, itself extended radially outward by a widening 18 which extends to the end 11 by a substantially cylindrical wall 19. The bottom 15 can be extended axially outward from the pump body - this is that is to say towards the inside of the product reservoir - by a tubular conduit 14, up to an inlet end 14c of said tubular conduit, and the cylindrical wall 17 is extended axially towards the end 11 by a tubular endpiece 4 which extends over a certain distance inside the pump body 1. On note that the cylindrical wall 17 of reduced diameter and the widening 18 could be omitted without departing from the scope of the present invention: in this case, the tubular end piece 4 would extend from the bottom 15 towards the end 11, and the bottom 15 would be directly linked to the cylindrical wall 19.

Un piston 2 coulisse dans la paroi cylindrique 19 du corps de pompe 1, en définissant avec le corps de pompe 1 une chambre de pompe 20. Le piston 2 est prolongé vers l'extrémité 11 du corps de pompe 1 par une tige-poussoir 3 qui s'étend au-delà de ladite extrémité 11 . La tige-poussoir 3 comporte un canal central ou axial 3a, qui débouche d'une part dans la chambre de pompe 20, et d'autre part à l'extérieur du corps de pompe 1. A partir de la chambre de pompe 20, le canal 3a présente d'abord une partie large, puis un rétrécissement 7a formant siège de clapet, comme il sera vu ci-dessous.A piston 2 slides in the cylindrical wall 19 of the pump body 1, defining with the pump body 1 a pump chamber 20. The piston 2 is extended towards the end 11 of the pump body 1 by a push rod 3 which extends beyond said end 11. The push rod 3 has a central or axial channel 3a, which opens on the one hand into the pump chamber 20, and on the other hand outside the pump body 1. From the pump chamber 20, the channel 3a first has a wide part, then a narrowing 7a forming a valve seat, as will be seen below.

La pompe comporte en outre un clapet 6 disposé entre le piston 2 et le fond 15 du corps de pompe 1, et sollicité élastiquement vers le piston 2 par un ressort 10 qui s'appuie sur le fond 15 du corps de pompe. Le clapet 6 comporte un pointeau 7 axial appliqué élastiquement sur le siège de clapet 7a du canal 3a, sous la sollicitation du ressort 10. De plus, le clapet 6 est doté d'une jupe cylindrique 8 s'étendant sur une certaine distance vers le fond 15 du corps de pompe, et adaptée à s'emmancher sur l'embout tubulaire 4. Avantageusement, la jupe 8 peut comporter une lèvre d'étanchéité périphérique intérieure 8a adaptée à parfaire l'étanchéité de l'emmanchement de ladite jupe 8 sur l'embout 4. La jupe 8 peut être guidée par des nervures extérieures 8 qui coulissent dans le corps de pompe 1. On notera que la jupe 8 pourrait être adaptée à s'emmancher à l'intérieur de l'embout 4 ou de la paroi cylindrique 17, sans sortir du cadre de la présente invention.The pump further comprises a valve 6 disposed between the piston 2 and the bottom 15 of the pump body 1, and urged elastically towards the piston 2 by a spring 10 which bears on the bottom 15 of the pump body. The valve 6 comprises an axial needle 7 applied elastically to the valve seat 7a of the channel 3a, under the stress of the spring 10. In addition, the valve 6 is provided with a cylindrical skirt 8 extending over a certain distance towards the bottom 15 of the pump body, and adapted to be fitted onto the tubular end piece 4. Advantageously, the skirt 8 may include an inner peripheral sealing lip 8a adapted to perfect the sealing of the fitting of said skirt 8 on the end piece 4. The skirt 8 can be guided by external ribs 8 which slide in the pump body 1. It will be noted that the skirt 8 could be adapted to be fitted inside the end piece 4 or the cylindrical wall 17, without departing from the scope of the present invention.

L'extrémité 11 du corps de pompe est enfin dotée d'une virole rapportée 21, fixée au corps de pompe 1, qui sert de butée au mouvement du piston 3 vers ladite extrémité 11.The end 11 of the pump body is finally provided with an attached ferrule 21, fixed to the pump body 1, which serves as a stop for the movement of the piston 3 towards said end 11.

La pompe de la figure 1 fonctionne de la façon décrite ci-après. Dans la description de ce fonctionnement, nous supposerons la chambre de pompe 20 remplie de produit à distribuer ou à pulvériser.The pump of Figure 1 operates as described below. In the description of this operation, we will assume the pump chamber 20 filled with product to be dispensed or sprayed.

Lorsqu'un utilisateur appuie sur la tige 3, généralement à l'aide d'un poussoir (non représenté), le piston 2 descend dans le corps de pompe en entraînant le clapet 6, contre la poussée du ressort 10. Dans ce mouvement de descente, la jupe 8 vient s'emmancher sur l'embout tubulaire 4, ce qui isole la chambre de pompe 20.When a user presses on the rod 3, generally using a plunger (not shown), the piston 2 descends into the pump body, driving the valve 6, against the thrust of the spring 10. In this movement of descent, the skirt 8 is fitted onto the tubular endpiece 4, which isolates the pump chamber 20.

Le mouvement de descente du piston a tendance à faire diminuer le volume de la chambre de pompe 20. Mais comme le produit liquide ou pâteux qu'elle contient est incompressible, ce mouvement se traduit par une augmentation rapide de la pression dans ladite chambre de pompe, ladite pression exerçant une action vers le bas sur le clapet 6. Lorsque la pression dans la chambre de pompe est suffisante pour contrebalancer la poussée du ressort 10, le pointeau 7 du clapet 6 se décolle de son siège 7a, ce qui libère un passage de la chambre de pompe 20 vers l'extérieur. Le produit contenu dans la chambre de pompe s'échappe alors par ce passage, au fur et à mesure que le piston descend dans le corps de pompe.The downward movement of the piston tends to decrease the volume of the pump chamber 20. But since the liquid or pasty product which it contains is incompressible, this movement results in a rapid increase in the pressure in said pump chamber , said pressure exerting a downward action on the valve 6. When the pressure in the pump chamber is sufficient to counterbalance the thrust of the spring 10, the needle 7 of the valve 6 comes off from its seat 7a, which frees passage from the pump chamber 20 to the outside. The product contained in the pump chamber then escapes through this passage, as the piston descends into the pump body.

Ce mouvement de descente s'arrête lorsque le clapet 6 ou le piston 2 arrive dans une position de butée. La pression dans la chambre de pompe diminue alors du fait de l'arrêt du mouvement du piston, ce qui entraîne l'obturation du canal 3a par le pointeau 7, qui est à nouveau appliqué élastiquement sur son siège 7a par le ressort 10.This downward movement stops when the valve 6 or the piston 2 arrives in a stop position. The pressure in the pump chamber then decreases due to the stopping of the movement of the piston, which leads to the obturation of the channel 3a by the needle 7, which is again applied elastically to its seat 7a by the spring 10.

Lorsque l'utilisateur relâche sa poussée sur la tige 3, le ressort 10 repousse le clapet 6 vers le haut, en entraînant en même temps le piston 2. Au début de ce mouvement de remontée, la chambre de pompe 20 est isolée par emmanchement de la jupe 8 sur l'embout tubulaire 4, et par application du pointeau 7 sur son siège 7a. La remontée du piston 2 crée donc une dépression. Avant que le piston 2 n'arrive en butée contre la virole 21, la jupe 8 se dégage de l'embout 4. Sous l'effet de la dépression régnant dans la chambre de pompe 20, le produit contenu dans le réservoir est alors aspiré vers ladite chambre de pompe , qui se remplit à nouveau.When the user releases his push on the rod 3, the spring 10 pushes the valve 6 upwards, at the same time driving the piston 2. At the start of this upward movement, the pump chamber 20 is isolated by fitting the the skirt 8 on the tubular endpiece 4, and by application of the needle 7 on its seat 7a. The rise of the piston 2 therefore creates a depression. Before the piston 2 comes into abutment against the ferrule 21, the skirt 8 emerges from the nozzle 4. Under the effect of the vacuum prevailing in the pump chamber 20, the product contained in the tank is then sucked towards said pump chamber, which is refilled.

On dispose dans le conduit 14 d'admission de la pompe une tige cylindrique 25 montée coulissante, comportant une extrémité 25a disposée à l'intérieur du corps de pompe 1, et une extrémité 25b disposée à l'extérieur dudit corps de pompe 1. Lors du montage de la pompe, comme représenté sur la figure 1, l'extrémité intérieure 25a de la tige est placée en butée contre le clapet 6 de la pompe. Comme représenté sur la figure 7, le conduit d'entrée de la pompe peut comporter un cordon intérieur périphérique 14a d'étanchéité Dans ce cas, le diamètre du conduit tubulaire 14 d'admission est légèrement supérieur au diamètre de la tige 25, de sorte que seul le cordon d'étanchéité 14a est en appui élastique contre la tige 25, ce qui limite les frottements entre ladite tige et le conduit 14 et permet le coulissement de la tige sous une force suffisante, tout en la maintenant en place lors du stockage ou du montage. La tige 25 pourrait éventuellement être remplacée par un tube plongeur, sans sortir du cadre de la présente invention.A cylindrical rod 25 is slidably mounted in the pump inlet duct 14, having one end 25a disposed inside the pump body 1, and one end 25b disposed outside said pump body 1. During mounting the pump, as shown in Figure 1, the inner end 25a of the rod is placed in abutment against the valve 6 of the pump. As shown in FIG. 7, the inlet pipe of the pump can comprise a peripheral inner sealing cord 14a. In this case, the diameter of the tubular inlet pipe 14 is slightly greater than the diameter of the rod 25, so that only the sealing bead 14a is in elastic abutment against the rod 25, which limits the friction between said rod and the conduit 14 and allows the rod to slide under sufficient force, while keeping it in place during storage or editing. The rod 25 could possibly be replaced by a dip tube, without departing from the scope of the present invention.

Comme représenté sur les figures 2 à 4, la tige 25 est dotée de rainures 26 longitudinales, qui permettent la communication entre la chambre de pompe 20 et un réservoir de produit. Ces rainures peuvent être formées sur toute la longueur de la tige 25, mais plus avantageusement, les rainures 26 ne sont pas formées sur toute la longueur de la tige 25, de sorte que ladite tige 25 comporte une partie lisse 27 non rainurée, placée au niveau du cordon d'étanchéité 14a du conduit 14 lors de l'assemblage de la pompe. Ainsi, après le montage de la pompe sur un réservoir de produit à pulvériser ou à distribuer et tant qu'elle n'est pas actionnée, le cordon d'étanchéité 14a est en appui périphérique élastique sur la partie non rainurée 27 de la tige 25, de sorte que la chambre de pompe 20 est isolée du produit contenu dans le réservoir. Le produit contenu dans le réservoir ne risque donc pas d'être pollué par les ressorts ou les lubrifiants de la pompe pendant le stockage. On limite aussi les risques de fuite dudit produit et d'entrée d'air dans le réservoir.As shown in Figures 2 to 4, the rod 25 is provided with longitudinal grooves 26, which allow communication between the pump chamber 20 and a product reservoir. These grooves can be formed over the entire length of the rod 25, but more advantageously, the grooves 26 are not formed over the entire length of the rod 25, so that said rod 25 has a smooth portion 27 not grooved, placed at the level of the sealing bead 14a of the conduit 14 during pump assembly. Thus, after mounting the pump on a reservoir of product to be sprayed or distributed and as long as it is not actuated, the sealing bead 14a is in elastic peripheral support on the non-grooved part 27 of the rod 25 , so that the pump chamber 20 is isolated from the product contained in the reservoir. The product contained in the tank therefore does not risk being polluted by the springs or lubricants of the pump during storage. The risks of leakage of said product and entry of air into the tank are also limited.

Pour des raisons qui seront vues plus loin, l'extrémité 25b extérieure de la tige 25 peut être taillée en biais ou en biseau, de façon à former une pointe. Avantageusement, la tige 25 peut en outre être dotée de rainures longitudinales 28 en creux, ou éventuellement de nervures longitudinales (28a, fig. 8c) faisant saillie à l'extérieur de la tige, ou d'autres reliefs, qui s'étendent sur une certaine distance à partir du voisinage de son extrémité 25b, comme représenté en section sur la figure 4 : le rôle des rainures 28 apparaîtra clairement dans le suite de la description. En variante, comme représenté sur la figure 8a, l'extrémité 25b de la tige 25 peut être formée en ogive, toujours avec des rainures longitudinales 28. Ou bien, comme représenté sur la figure 8b, l'extrémité 25b peut être de section supérieure à la section de la tige 25, formant un pilon. La tige 25, ou éventuellement le tube plongeur, sera réalisé(e) de préférence dans un matériau rigide, tel que par exemple la résine acétal, le PBT ou le polypropylène.For reasons which will be seen later, the outer end 25b of the rod 25 can be cut at an angle or at a bevel, so as to form a point. Advantageously, the rod 25 can also be provided with hollow longitudinal grooves 28, or possibly longitudinal ribs (28a, FIG. 8c) projecting outside the rod, or other reliefs, which extend over a certain distance from the vicinity of its end 25b, as shown in section in FIG. 4: the role of the grooves 28 will appear clearly in the following description. Alternatively, as shown in Figure 8a, the end 25b of the rod 25 can be formed in a warhead, always with longitudinal grooves 28. Or, as shown in Figure 8b, the end 25b can be of upper section to the section of the rod 25, forming a pestle. The rod 25, or possibly the dip tube, will preferably be made of a rigid material, such as, for example, acetal resin, PBT or polypropylene.

En référence à la figure 6, lors du premier actionnement de la pompe, la tige 25 est repoussée axialement vers le réservoir, par appui du clapet 6 sur son extrémité 25a intérieure. Par ce mouvement, on peut par exemple percer une membrane ou déplacer un bouchon séparant le réservoir de produit en deux compartiments, comme il sera vu dans les exemples d'application donnés ci-dessous. Après le premier actionnement de la pompe, la tige 25 ne se déplace plus. On peut ainsi mélanger deux produits au moment de l'emploi, un au moins des produits étant liquide, et un des produits pouvant être une poudre ou un lyophilisat à mélanger à un liquide. Ou bien, en perçant au moment de l'emploi une réserve scellée de gaz comprimé, notamment un gaz inerte tel que l'azote, on peut mettre le réservoir de produit à distribuer sous pression au moment de l'emploi, évitant ainsi les pertes de pression par fuite au niveau du joint du réservoir pendant le stockage.Referring to Figure 6, during the first actuation of the pump, the rod 25 is pushed axially towards the reservoir, by pressing the valve 6 on its inner end 25a. By this movement, one can for example pierce a membrane or move a plug separating the product reservoir into two compartments, as will be seen in the application examples given below. After the first actuation of the pump, the rod 25 no longer moves. It is thus possible to mix two products at the time of use, at least one of the products being liquid, and one of the products possibly being a powder or a lyophilisate to be mixed with a liquid. Or, by piercing at the time of use a sealed reserve of compressed gas, in particular an inert gas such as nitrogen, the reservoir of product to be dispensed can be pressurized at the time of use, thus avoiding losses. pressure leakage at the tank seal during storage.

En outre, lors du premier actionnement, le mouvement axial de la tige 25 amène une partie des rainures 26 hors du conduit tubulaire 14, c'est-à-dire dans le réservoir de produit. Ainsi, les rainures 26 constituent un passage entre le réservoir de produit et la chambre de pompe 20, permettant l'aspiration de produit à la fin de chaque actionnement de la pompe.In addition, during the first actuation, the axial movement of the rod 25 brings part of the grooves 26 out of the tubular conduit 14, that is to say into the reservoir of product. Thus, the grooves 26 constitute a passage between the product reservoir and the pump chamber 20, allowing the suction of product at the end of each actuation of the pump.

On notera que jusqu'à ce qu'un utilisateur actionnne volontairement la pompe pour la première fois, la tige 25, ou éventuellement un tube plongeur, placé(e) en butée contre le clapet 6 ou au voisinage dudit clapet, empêche l'actionnement accidentel de la pompe sous une faible sollicitation appliquée à la tige poussoir 3 de ladite pompe, par exemple pendant un transport ou sa manipulation, grâce aux frottements existant entre la tige 25 et le cordon 14a d'étanchéité du conduit 14. Par exemple, ces frottements seront suffisants pour empêcher le mouvement de la tige 25 sous une sollicitation inférieure à 49 N (5kg), lesdits frottements pouvant avoir une autre valeur sans sortir du cadre de la presente invention.Note that until a user voluntarily actuates the pump for the first time, the rod 25, or possibly a dip tube, placed in abutment against the valve 6 or in the vicinity of said valve, prevents actuation accidental pump under low stress applied to the push rod 3 of said pump, for example during transport or handling, thanks to the friction existing between the rod 25 and the bead 14a sealing the conduit 14. For example, these friction will be sufficient to prevent movement of the rod 25 under a stress less than 49 N (5 kg), said friction may have another value without departing from the scope of the present invention.

En variante, la tige 25 peut être solidaire du clapet 6, de sorte qu'elle coulisse axialement dans le conduit d'admission 14 à chaque actionnement de la pompe, en suivant le mouvement du clapet 6. On peut ainsi utiliser la tige 25 pour commander un organe, tel qu'un clapet ou une valve, à chaque actionnement de la pompe. Dans ce cas particulier, les rainures 26 s'étendent sur toute la longueur de la tige 25 ou au moins sur une longueur suffisante pour que lesdites nervures 26 permettent la communication entre la chambre de pompe 20 et le réservoir de produit lorsque la pompe est dans sa position de repos. En variante, la tige 25 peut aussi coulisser sans étanchéité dans le conduit d'admission 14.As a variant, the rod 25 may be integral with the valve 6, so that it slides axially in the intake duct 14 each time the pump is actuated, following the movement of the valve 6. It is thus possible to use the rod 25 to control a member, such as a valve or valve, each time the pump is actuated. In this particular case, the grooves 26 extend over the entire length of the rod 25 or at least over a length sufficient for said ribs 26 to allow communication between the pump chamber 20 and the product reservoir when the pump is in its rest position. As a variant, the rod 25 can also slide without sealing in the intake duct 14.

Eventuellement, le clapet 6 peut repousser la tige 25 hors du conduit d'admission 14 à la fin du premier actionnement de la pompe, après que ladite tige 25 a rempli sa fonction de perforation d'une membrane ou de déplacement d'un bouchon ou d'un autre organe, de sorte que ladite tige 25 tombe dans le réservoir de produit et peut ensuite servir d'agitateur pour faciliter l'homogénéisation dudit produit. Pour obtenir ce résultat, on pourra par exemple doter le clapet 6 d'une broche axiale 6a s'étendant vers l'extrémité 25a de la tige 25, telle que représentée sur la figure 5, de façon à repousser la tige 25 hors du conduit d'admission 14 lors du premier actionnement de la pompe.Optionally, the valve 6 can push the rod 25 out of the intake duct 14 at the end of the first actuation of the pump, after said rod 25 has fulfilled its function of perforating a membrane or moving a plug or another member, so that said rod 25 falls into the product reservoir and can then serve as an agitator to facilitate the homogenization of said product. To obtain this result, it is for example possible to provide the valve 6 with an axial pin 6a extending towards the end 25a of the rod 25, as shown in FIG. 5, so as to push the rod 25 out of the conduit intake 14 during the first actuation of the pump.

Dans la configuration représentée sur les figures 1 à 6, c'est-à-dire lorsqu'une tige 25 et non un tube plongeur est monté dans le conduit 14 d'admission de la pompe, celle-ci est en général destinée à fonctionner en position inversée, c'est-à-dire avec un réservoir de produit disposé au-dessus d'elle. Néanmoins, il faut remarquer qu'une telle pompe pourrait être utilisée en position droite avec un réservoir déformable, en fonctionnement sans reprise d'air, c'est-à-dire sans renvoyer d'air dans le réservoir au fur et à mesure que le produit qu'il contient est consommé : dans ce cas, le réservoir déformable diminue de volume au fur et à mesure que le produit qu'il contient est consommé, de sorte que le conduit d'admission 14 est toujours immergé dans le produit à pulvériser ou à distribuer.In the configuration shown in Figures 1 to 6, that is to say when a rod 25 and not a dip tube is mounted in the conduit 14 of the pump intake, the latter is generally intended to operate in the inverted position, that is to say with a product reservoir disposed above it. However, it should be noted that such a pump could be used in an upright position with a deformable tank, in operation without return air, that is to say without returning air to the tank as and when the product it contains is consumed: in this case, the deformable reservoir decreases by volume as the product it contains is consumed, so that the intake duct 14 is always immersed in the product to be sprayed or dispensed.

Dans cette forme de réalisation, l'invention n'est pas limitée à la pompe particulière de la figure 5 : elle s'applique à toute pompe ou à toute valve dans laquelle la tige 25, ou un tube plongeur, peut s'étendre à l'intérieur de la pompe ou valve jusqu'au voisinage d'un organe mobile coulissant axialement dans ladite pompe ou valve lorsque ladite pompe ou valve est actionnée.In this embodiment, the invention is not limited to the particular pump of FIG. 5: it applies to any pump or to any valve in which the rod 25, or a dip tube, can extend to the interior of the pump or valve to the vicinity of a movable member sliding axially in said pump or valve when said pump or valve is actuated.

Les figures 9a à 9c représentent un premier exemple d'utilisation de la pompe de la figure 1. Comme représenté sur la figure 9a, le corps de pompe 1 est monté sur un goulot 36 d'un réservoir 30 comportant deux compartiments 31 et 32 séparés par une membrane déchirable 33. Dans la position de stockage du dispositif, comme représenté sur la figre 9a, la tige 25 pénêtre dans le compartiment 31 du réservoir 30, et l'extrémité extérieure 25b de ladite tige se trouve au voisinage de la membrane déchirable 33. Avantageusement, comme expliqué ci-dessus, le cordon d'étanchéité 14a du conduit d'admission 14 de la pompe est en contact avec une partie non rainurée 27 de la tige, de sorte que la chambre de pompe 20 est isolée du compartiment 31 du réservoir 30 tant que la pompe n'a pas été actionnée. Figures 9a to 9c show a first example of use of the pump of Figure 1. As shown in Figure 9a, the pump body 1 is mounted on a neck 36 of a tank 30 having two compartments 31 and 32 separated by a tearable membrane 33. In the storage position of the device, as shown in FIG. 9a, the rod 25 penetrates into the compartment 31 of the reservoir 30, and the outer end 25b of said rod is located in the vicinity of the tearable membrane 33. Advantageously, as explained above, the sealing bead 14a of the intake duct 14 of the pump is in contact with an ungrooved part 27 of the rod, so that the pump chamber 20 is isolated from the compartment 31 of the reservoir 30 until the pump has been activated.

Dans l'exemple présenté sur la figure 9a, le compartiment 31 contient un solvant et le compartiment 32 contient un lyophilisat. Mais chacun des compartiments 31,32 peut contenir un produit quelconque, sous forme liquide, pâteuse, sous forme de poudre, ou sous forme solide tel qu'un lyophilisat : un au moins des compartiments 31, 32 doit néanmoins contenir un produit liquide, afin de faciliter le mélange des deux produits lors de la perforation de la membrane, comme il sera vu ci-dessous.In the example shown in Figure 9a, compartment 31 contains a solvent and compartment 32 contains a lyophilisate. However, each of the compartments 31, 32 can contain any product, in liquid, pasty form, in the form of powder, or in solid form such as a lyophilisate: at least one of the compartments 31, 32 must nevertheless contain a liquid product, in order to facilitate the mixing of the two products during the perforation of the membrane, as will be seen below.

En variante, le compartiment 32 peut être scellé de façon parfaitement étanche, et contenir un gaz sous pression, notamment un gaz inerte tel que l'azote, afin d'éviter les fuites de gaz pendant le stockage du dispositif. Dans ce cas, le compartiment 32 peut d'ailleurs contenir un produit à mélanger au contenu du compartiment 31, en plus du gaz. Eventuellement, le compartiment 31 peut lui-aussi contenir un gaz sous pression, en plus du produit à pulvériser ou à distribuer qu'il contient. Eventuellement, l'un des compartiments peut mis en dépression ou sous vide.As a variant, the compartment 32 can be sealed in a perfectly leaktight manner, and contain a pressurized gas, in particular an inert gas such as nitrogen, in order to avoid gas leaks during storage of the device. In this case, the compartment 32 may also contain a product to be mixed with the content of the compartment 31, in addition to the gas. Optionally, the compartment 31 can also contain a gas under pressure, in addition to the product to be sprayed or dispensed that it contains. Optionally, one of the compartments can be placed under vacuum or under vacuum.

Dans la forme de réalisation particulière présentée sur la figure 9a, le réservoir comporte une enceinte sans fond 31 a délimitant le compartiment 31 et sur laquelle est montée la pompe, ladite enceinte pouvant être avantageusement réalisée en matière plastique. Le réservoir 30 comporte en outre une douille 32a assemblée à l'enceinte 31a, par exemple par vissage, qui ferme l'enceinte 31a et qui délimite le compartiment 32. La douille 32a peut être réalisée en tout matériau, par exemple en verre. La douille 32a est fermée par un bouchon 34 doté d'un orifice central 34a, placé dans le prolongement de la tige 25 lorsque la douille 32a est assemblée sur l'enceinte 31a, et la membrane déchirable 33 est fixée de façon étanche sur le bouchon 34 en fermant l'orifice 34a.In the particular embodiment shown in FIG. 9a, the reservoir comprises a bottomless enclosure 31 a delimiting the compartment 31 and on which the pump is mounted, said enclosure possibly being made of plastic. The reservoir 30 further comprises a socket 32a assembled to the enclosure 31a, for example by screwing, which closes the enclosure 31a and which delimits the compartment 32. The socket 32a can be made of any material, for example glass. The sleeve 32a is closed by a plug 34 provided with a central orifice 34a, placed in the extension of the rod 25 when the sleeve 32a is assembled on the enclosure 31a, and the tearable membrane 33 is tightly fixed on the plug 34 by closing the opening 34a.

Cette disposition est particulièrement avantageuse dans le cas où le compartiment 32 contient un lyophilisat. En effet, la douille 32 peut servir à la lyophilisation du produit d'une façon bien connue. Il suffit pour cela de disposer le produit à lyophiliser dans la douille 32 et d'engager partiellement le bouchon 34 sur ladite douille sans fermer totalement le compartiment 32. On pourra par exemple doter le bouchon 34 d'une fente 34b s'étendant sur une partie de sa hauteur, de façon à constituer un passage entre le compartiment 32 et l'extérieur lorsque le bouchon 34 est partiellement engagé sur la douille 32a. On peut ensuite congéler le produit contenu dans le compartiment 32, puis le réchauffer brutalement sous vide, ce qui provoque la sublimation de l'eau contenue dans ledit produit et laisse un résidu sec et solide : le lyophilisat. On ferme alors le compartiment 32 par enfoncement complet du bouchon 34, puis, on assemble la douille 32a sur l'enceinte 32a, on remplit le compartiment 31 en solvant, et on assemble le corps de pompe l sur le réservoir 30. Eventuellement, le compartiment 32 peut en outre être rempli de gaz sous pression avant l'enfoncement complet du bouchon 34. De plus, le compartiment 31 peut éventuellement être ultérieurement rempli de gaz sous pression, par exemple comme expliqué ci-dessous en regard de la figure 13. Mais dans ce cas, les rainures 26 de la tige 25 doivent s'étendre depuis la chambre de pompe 20 jusqu'au-delà du conduit d'admission 14, afin de faire communiquer le compartiment 31 avec la chambre de pompe 20 avant le premier actionnement de la pompe.This arrangement is particularly advantageous in the case where the compartment 32 contains a lyophilisate. Indeed, the sleeve 32 can be used for lyophilization of the product in a well known manner. For this, it suffices to place the product to be lyophilized in the sleeve 32 and to partially engage the plug 34 on said sleeve without completely closing the compartment 32. We could for example provide the plug 34 with a slot 34b extending over a part of its height, so as to constitute a passage between the compartment 32 and the outside when the plug 34 is partially engaged on the socket 32a. We can then freeze the product contained in compartment 32, then heat it suddenly under vacuum, which causes the sublimation of the water contained in said product and leaves a dry and solid residue: lyophilisate. The compartment 32 is then closed by fully depressing the plug 34, then the socket 32a is assembled on the enclosure 32a, the compartment 31 is filled with solvent, and the pump body 1 is assembled on the reservoir 30. Optionally, the compartment 32 can also be filled with pressurized gas before the plug 34 is fully inserted. In addition, compartment 31 can optionally be subsequently filled with pressurized gas, for example as explained below with reference to FIG. 13. But in this case, the grooves 26 of the rod 25 must extend from the pump chamber 20 to beyond the intake duct 14, in order to make the compartment 31 communicate with the pump chamber 20 before the first pump activation.

En référence à la figure 9b, lors du premier actionnement de la pompe, la tige 25 est repoussée vers la membrane 33, qu'elle vient crever, ce qui provoque l'écoulement du liquide contenu dans le compartiment 31 vers le compartiment 32, où il se mélange au lyophilisat. L'écoulement du solvant est facilité par les rainures 28 longitudinales formées à l'extrémité 25b de la tige 25. La figure 9b représente une tige 25 ayant une extrémité 25b taillée en pointe, mais elle pourrait avoir toute autre forme, sans sortir du cadre de la présente invention. Comme il a déjà été vu ci-dessus, le mouvement axial de la tige 25 fait apparaître les rainures 26 de la tige dans le compartiment 31, de sorte que lesdites rainures 26 permettent la communication entre le réservoir 20 et la chambre de pompe 20.With reference to FIG. 9b, during the first actuation of the pump, the rod 25 is pushed back towards the membrane 33, which it punctures, which causes the liquid contained in the compartment 31 to flow towards the compartment 32, where it mixes with lyophilisate. The flow of the solvent is facilitated by the longitudinal grooves 28 formed at the end 25b of the rod 25. FIG. 9b represents a rod 25 having an end 25b cut into a point, but it could have any other shape, without leaving the frame of the present invention. As already seen above, the axial movement of the rod 25 causes the grooves 26 of the rod to appear in the compartment 31, so that said grooves 26 allow communication between the reservoir 20 and the pump chamber 20.

Une fois la dissolution du lyophilisat effectuée, on peut retourner le dispositif dans la position représentée sur la figure 9c, c'est-à-dire avec la pompe située en dessous du réservoir 30. Le produit à pulvériser ou à distribuer passe alors dans le compartiement 31, de sorte qu'il peut être aspiré dans la chambre de pompe 20 à travers les rainures 26 à la fin de chaque actionnement de la pompe. Avantageusement, l'enceinte 31a comporte une lèvre périphérique d'étanchéité 35 appliquée élastiquement contre le conduit 14 d'admission de la pompe, afin d'éviter que du produit ne passe dans le volume compris entre le corps de pompe 1 et le goulot 36 du réservoir 30, où ledit produit ne pourrait plus être aspiré par la pompe.Once the lyophilisate has dissolved, the device can be returned to the position shown in FIG. 9c, that is to say with the pump located below the reservoir 30. The product to be sprayed or dispensed then passes into the compartment 31, so that it can be sucked into the pump chamber 20 through the grooves 26 to the end of each actuation of the pump. Advantageously, the enclosure 31a comprises a peripheral sealing lip 35 applied elastically against the conduit 14 of the pump intake, in order to prevent product from passing into the volume between the pump body 1 and the neck 36 from reservoir 30, where said product could no longer be sucked up by the pump.

Les figures 10a et 10b représentent une variante de réalisation de l'exemple des figures 9a à 9c, dans laquelle le réservoir 30 comporte une enceinte 31a, réalisée par exemple en matière plastique, et présentant une partie cylindrique 37 s'étendant entre une extrémité ouverte 37a et un goulot 36 sur lequel est monté le corps de pompe 1. Comme vu précédemment, l'enceinte 31a peut comporter une lèvre périphérique d'étanchéité 35 appliquée élastiquement contre le conduit d'admission 14 de la pompe. Figures 10a and 10b show an alternative embodiment of the example of Figures 9a to 9c, in which the reservoir 30 comprises an enclosure 31a, made for example of plastic, and having a cylindrical part 37 extending between an open end 37a and a neck 36 on which the pump body 1 is mounted. As seen previously, the enclosure 31a may comprise a peripheral sealing lip 35 applied elastically against the intake duct 14 of the pump.

Le réservoir 30 comporte en outre un cylindre creux 38 adapté à s'emboîter dans la partie cylindrique 37 de l'enceinte 31a, en contact étanche avec ladite partie cylindrique 37. Ce cylindre creux 38 est partagé en deux compartiments 31, 32 par une cloison 39 annulaire, s'étendant à partir dudit cylindre creux 38 vers l'intérieur. La cloison annulaire 39 délimite un orifice central 39a, fermé par une membrane déchirable 33, et situé dans le prolongement de la tige 25.The reservoir 30 further comprises a hollow cylinder 38 adapted to fit into the cylindrical part 37 of the enclosure 31a, in sealed contact with said cylindrical part 37. This hollow cylinder 38 is divided into two compartments 31, 32 by a partition 39 annular, extending from said hollow cylinder 38 inwardly. The annular partition 39 delimits a central orifice 39a, closed by a tearable membrane 33, and located in the extension of the rod 25.

Dans l'exemple particulier représenté sur les figures 10a et 10b, l'enceinte 31a peut comporter en outre une fente 37b s'étendant axialement sur sa partie cylindrique 37, sur une certaine distance à partir de l'extrémité ouverte 37a. Ainsi, on peut utiliser le dispositf pour lyophiliser un produit dans le compartiment 31 en engageant partiellement l'enceinte 31a, sur laquelle la pompe a été préalablement montée, sur le cylindre 38 : la fente 37b permet alors la communication du compartiment 31 avec l'extérieur pendant la lyophilisation, puis l'enceinte 31a est enfoncée à fond sur le cylindre 38, ce qui isole le compartiment 31. Le compartiment 32 peut ensuite être fermé après avoir été lui-aussi rempli, par exemple par sertissage d'une capsule métallique 40 sur l'extrémité 37a ouverte de l'enceinte 31a, un joint plein 41 en forme de disque étant placé entre la capsule métallique 40 et l'extrémité 37a de l'enceinte 31a.In the particular example shown in FIGS. 10a and 10b, the enclosure 31a may further comprise a slot 37b extending axially on its cylindrical part 37, over a certain distance from the open end 37a. Thus, one can use the device to freeze-dry a product in compartment 31 by partially engaging the enclosure 31a, on which the pump has been previously mounted, on the cylinder 38: the slot 37b then allows the communication of compartment 31 with the outside during freeze-drying, then the enclosure 31a is fully pressed onto the cylinder 38, which isolates the compartment 31. The compartment 32 can then be closed after it has also been filled, for example by crimping a metal capsule 40 on the open end 37a of the enclosure 31a, a solid disc-shaped seal 41 being placed between the metal capsule 40 and the end 37a of the enclosure 31a.

Avanatgeusement, la cloison 39 annulaire peut être relevée vers le centre, de façon à ce que le lyophilisat, ou une autre poudre, s'accumule autour de la membrane 33 mais pas sur ladite membrane, de façon à ne pas gêner la perforation de ladite membrane lors du premier actionnement de la pompe.Advantageously, the annular partition 39 can be raised towards the center, so that the lyophilisate, or another powder, accumulates around the membrane 33 but not on said membrane, so as not to hinder the perforation of said membrane when the pump is first activated.

Sur les figures 10a et 10b, l'extrémité 25b de la tige 25 est représentée élargie, mais elle pourrait avoir toute autre forme sans sortir du cadre de la présente invention.In Figures 10a and 10b, the end 25b of the rod 25 is shown enlarged, but it could have any other shape without departing from the scope of the present invention.

Le fonctionnement du dispositif des figures 10a et 10b est le même que celui des figures 9a à 9c : il ne sera donc pas repris ici.The operation of the device of Figures 10a and 10b is the same as that of Figures 9a to 9c: it will therefore not be repeated here.

Les figures 11a et 11 b représentent une variante du dispositif des figures 10a et 10b, dans laquelle l'orifice central 39a de la cloison annulaire 39 est fermé non pas par une membrane déchirable mais par un bouchon 42 emboîté dans ledit orifice 39a. Lors du premier actionnement de la pompe, come représenté sur la figure 11b, la tige 25 repousse le bouchon 42 dans le compartiment 32, ce qui permet la communication entre les compartiments 31 et 32. Il est avantageux que le bouchon 25 soit assez volumineux : ainsi, lorsqu'il est repoussé dans le compartiment 32 par la tige 25, il chasse violemment le produit contenu dans le compartiment 32 vers le compartiment 31, ce qui facilite le mélange des produits. Figures 11a and 11b show a variant of the device of Figures 10a and 10b, in which the central orifice 39a of the annular wall 39 is closed not by a tearable membrane but by a plug 42 fitted in said orifice 39a. During the first actuation of the pump, as shown in FIG. 11b, the rod 25 pushes the plug 42 back into the compartment 32, which allows communication between the compartments 31 and 32. It is advantageous for the plug 25 to be quite bulky: thus, when it is pushed back into the compartment 32 by the rod 25, it violently drives the product contained in the compartment 32 towards the compartment 31, which facilitates the mixing of the products.

Dans cette forme particulière de réalisation, l'extrémité 25b de la tige 25 sera non pointue, de préférence élargie, de facon à bien repousser le bouchon 42.In this particular embodiment, the end 25b of the rod 25 will be non-pointed, preferably enlarged, so as to push the plug 42 well.

Les figures 12a, 12b et 12c représentent un dispositif similaire à celui des figures 10a, 10b, 11a et 11b, dans lequel un tube plongeur 5 est monté coulissant dans le conduit d'admission 14 de la pompe. L'extrémité extérieure 5a du tube 5 comporte une partie rétrécie 43. Par ailleurs, le compartiment 32 comporte une portion de tube 44 s'étendant axialement entre une extrémité supérieure 44a voisine de la membrane 33 et une extrémité inférieure 44b en contact avec le joint 41 formant le fond du compartiment 32. La portion de tube 44 est maintenue centrée dans le compartiment 32 par au moins trois bras 45 radiaux s'étendant depuis ladite portion de tube 44 jusqu'au cylindre creux 38, et placés en contact de la cloison annulaire 39. L'extrémité inférieure 44b de la portion de tube 44 est entailée en biais ou en biseau, ou comporte une entaille, de façon à ne pas s'appliquer de façon étanche sur le point 41. De façon générale, l'extrémité inférieure 44b de la portion de tube 44 est donc non perpendiculaire à l'axe de ladite portion de tube 44. D'autre part, l'extrémité supérieure 44a de ladite portion de tube 44 forme un logement 44c complémentaire de la partie rétrécie 43 du tube plongeur 5. Figures 12a, 12b and 12c show a device similar to that of Figures 10a, 10b, 11a and 11b, in which a dip tube 5 is slidably mounted in the intake duct 14 of the pump. The outer end 5a of the tube 5 has a narrowed portion 43. Furthermore, the compartment 32 comprises a portion of tube 44 extending axially between an upper end 44a adjacent to the membrane 33 and a lower end 44b in contact with the seal 41 forming the bottom of the compartment 32. The tube portion 44 is kept centered in the compartment 32 by at least three radial arms 45 extending from said tube portion 44 to the hollow cylinder 38, and placed in contact with the partition annular 39. The lower end 44b of the tube portion 44 is notched or bevelled, or has a notch, so as not to be applied sealingly on point 41. In general, the end 44b of the tube portion 44 is therefore not perpendicular to the axis of said tube portion 44. On the other hand, the upper end 44a of said tube portion 44 forms a housing 44c complementary to the narrowed part 43 of the dip tube 5.

Ainsi, lors du premier actionnement de la pompe, le tube plongeur 5 crève la membrane 33 et la partie rétrécie 43 vient s'emboîter de façon étanche dans le logement 44c : le tube 5 est alors accouplé à la portion de tube 44, de sorte que la pompe peut aspirer par l'extrémité inférieure 44b le contenu du compartiment 32, résultant du mélange des produits initialement contenus dans les compartiments 31 et 32.Thus, during the first actuation of the pump, the dip tube 5 punctures the membrane 33 and the narrowed part 43 fits tightly in the housing 44c: the tube 5 is then coupled to the tube portion 44, so that the pump can suck the contents of compartment 32 through the lower end 44b, resulting from the mixing of the products initially contained in compartments 31 and 32.

La figure 13 représente une pompe semblable à celle de la figure 1, comportant non plus une tige 25 montée coulissante dans le conduit 14, mais un tube plongeur 5. Eventuellement, le tube plongeur pourrait être remplacé par une tige (25) comportant des rainures longitudinales s'étendant depuis une partie de la tige (25) intérieure de la pompe jusqu'à l'intérieur du réservoir de façon à constituer un passage entre la chambre de pompe 20 et le réservoir avant le premier actionnement de la pompe. La pompe de la figure 13 comporte en outre une tige 7b prolongeant le pointeau 7 et faisant saillie d'une distance H1 au-delà de l'extrémité extérieure de la tige creuse 3. De plus, au repos, la jupe 8 est séparée d'une distance axiale H2 de l'embout tubulaire 4, H2 étant supérieure à H1. Une telle configuration permet aisément le remplissage en gaz, notamment en azote, du réservoir de produit sur lequel est montée la pompe. FIG. 13 represents a pump similar to that of FIG. 1, no longer comprising a rod 25 slidably mounted in the conduit 14, but a dip tube 5. Optionally, the dip tube could be replaced by a rod (25) having grooves longitudinal extending from a portion of the inner rod (25) of the pump to the interior of the reservoir so as to constitute a passage between the pump chamber 20 and the reservoir before the first actuation of the pump. The pump of Figure 13 further comprises a rod 7b extending the needle 7 and projecting a distance H1 beyond the outer end of the hollow rod 3. In addition, at rest, the skirt 8 is separated d 'An axial distance H2 from the tubular end piece 4, H2 being greater than H1. Such a configuration easily allows the filling of gas, in particular nitrogen, of the product reservoir on which the pump is mounted.

Comme expliqué dans la demande de brevet français n° 90 11465, il suffit pour cela d'appuyer sur la tige 7b de façon à la faire descendre de la hauteur H1, ce qui ouvre un passage entre le pointeau 7 et le siège de clapet 7a, sans emmancher la jupe 8 sur l'embout tubulaire 4. On injecte ensuite le gaz par le canal 3a.As explained in French patent application n ° 90 11465, it suffices to press the rod 7b so as to bring it down from the height H1, which opens a passage between the needle 7 and the valve seat 7a , without fitting the skirt 8 onto the tubular end piece 4. The gas is then injected through the channel 3a.

Mais avec une pompe classique telle que décrite dans la demande de brevet précitée, des surpressions transitoires du gaz injecté peuvent entraîner un emmanchement accidentiel de la jupe 8 sur l'embout 4 : la pression du gaz sur le clapet 6 maintient alors l'emmanchement, de sorte que la communication avec le réservoir reste coupée et le remplissage en gaz ne se fait pas.But with a conventional pump as described in the aforementioned patent application, transient overpressures of the injected gas can cause accidental fitting of the skirt 8 on the nozzle 4: the pressure of the gas on the valve 6 then maintains the fitting, so that the communication with the tank remains cut and the gas filling is not done.

Au contraire, avec une pompe selon l'invention, une extrémité intérieure 5c du tube plongeur 5 peut être placée au voisisnage du clapet 6, et en tous cas séparée dudit clapet 6 d'une distance H3 inférieure à H2 ou éventuellement égale à zéro. Ladite extrémité intérieure 5c est avantageusement dotée d'une entaille 5d ou taillée en biais ou en biseau. Ainsi, lorsque le gaz est injecté, le tube plongeur 5 forme une butée empêchant la jupe 8 de venir s'emmancher sur l'embout 4 en cas de surpression transitoire du gaz. Les frottements du cordon d'étanchéité 14a sur le tube plongeur 5 suffisent à retenir le tube 5 lors de telles surpressions : en effet, tant que la jupe 8 n'est pas emmanchée sur l'embout 4, le gaz peut s'écouler vers le réservoir, de sorte que la force ainsi exercée sur le clapet 6 en direction du tube 5 est limitée. En outre, le ressort 10 aide le tube 5 à retenir le clapet 6. Par exemple, les frottements entre le tube plongeur 5 et le cordon d'étanchéité 14a, ou plus généralement entre le tube plongeur 5 et le conduit d'admission 14, seront suffisants pour empêcher le mouvement de la tige 25 sous une sollicitation inférieure à 49 N (5kg), lesdits frottements pouvant avoir une autre valeur sans sortir du cadre de la presente invention.On the contrary, with a pump according to the invention, an inner end 5c of the dip tube 5 can be placed in the vicinity of the valve 6, and in any case separated from said valve 6 by a distance H3 less than H2 or possibly equal to zero. Said inner end 5c is advantageously provided with a notch 5d or cut at an angle or at a bevel. Thus, when the gas is injected, the dip tube 5 forms a stop preventing the skirt 8 from coming to be fitted on the nozzle 4 in the event of transient gas overpressure. The friction of the sealing bead 14a on the plunger tube 5 is sufficient to retain the tube 5 during such overpressures: in fact, as long as the skirt 8 is not fitted on the end piece 4, the gas can flow towards the reservoir, so that the force thus exerted on the valve 6 in the direction of the tube 5 is limited. In addition, the spring 10 helps the tube 5 to retain the valve 6. For example, the friction between the dip tube 5 and the sealing bead 14a, or more generally between the dip tube 5 and the intake duct 14, will be sufficient to prevent movement of the rod 25 under a stress of less than 49 N (5 kg), said friction being able to have another value without departing from the scope of the present invention.

Comme vu précédemment, lors du premier actionnement de la pompe par un utilisateur, le tube plongeur 5 est repoussé vers le réservoir de produit. Avant ce premier actionnement volontaire, le tube plongeur 5 constitue une sécurité contre un actionnement accidentel de la pompe, comme expliqué précédemment en regard de la pompe de la figure 5.As seen above, during the first actuation of the pump by a user, the dip tube 5 is pushed back towards the product reservoir. Before this first voluntary actuation, the dip tube 5 constitutes a safety against accidental actuation of the pump, as explained above with regard to the pump in FIG. 5.

Le tube-plongeur pourrait être remplacé par une tige pleine 25, à condition qu'elle comporte des rainures longitudinales 26 sur toute sa longueur, ou qu'elle coulisse sans étanchéité dans le conduit d'admission 14.The dip tube could be replaced by a solid rod 25, provided that it has longitudinal grooves 26 over its entire length, or that it slides without sealing in the intake duct 14.

Claims (21)

  1. A device for spraying or dispensing a fluid, the device including fluid outlet control means mounted on a tank of said fluid, said control means including:
       a body (1);
       an actuator member (3) of said control means, slidably mounted relative to the body (1);
       an inlet passage (14) communicating with the tar and enabling the fluid to enter into the body (1); and
       an elongate member (5, 25) slidably mounted in said inlet passage (14) and penetrating into the tank (30), said elongate member (5, 25) being displaceable together with the actuator member at least towards the tank (30) and at least on the first occasion that the actuator member is actuated;
       the device being characterized in that the elongate member (5, 25) exerts mechanical action on an element (33, 42) secured to the tank (30) when said elongate member is displaced, and in such a manner as to modify the state of said element (33, 42).
  2. A device according to claim 1, in which the elongate member (5, 25) is linked to the actuator member (3).
  3. A device according to claim 2, further including said tank (30) and in which said elongate member (5, 25) exerts a remote control function each time said actuator member (3) is actuated to control a member disposed inside the tank, such as a valve or a valve member.
  4. A device according to claim 1, in which the elongate member (5, 25) is a rod (25) which is pushed towards the tank (30) only on the first occasion that the actuator member (3) is actuated, said rod (25) including a portion (27) in sealed peripheral contact with the inlet passage (14) prior to the first actuation of the actuator member (3) such that the inlet passage is closed prior to the first actuation, and the rod includes a portion having communication means (20) adapted to enable the fluid to pass through the inlet passage of the body (1) after the first actuation of the actuator means (3).
  5. A device according to claim 4, in which said communication means are longitudinal grooves (26) formed in a portion of the length of the rod (25) on the outside of said rod (25).
  6. A device according to claim 1, further including said tank (30), and in which said tank (30) is split into at least two compartments (31, 32) by at least one separation means (33, 42), and the elongate member (5, 25) is adapted to open said separation means (33, 42) on the first occasion that the actuator member is actuated.
  7. A device according to claim 6, in which the separation means is a membrane (33) which is punctured by the elongate member (5, 25) on the first occasion that the actuator member is actuated.
  8. A device according to claim 6, in which the separation means is a plug (42) which is pushed back by the rod (25) on the first occasion that the actuator member is actuated.
  9. A device according to claims 6 to 8, in which at least one of the compartments (31, 32) of the tank (30) contains a gas under pressure.
  10. A device according to claims 6 to 8, in which at least one of the compartments (31, 32) of the tank (30) is at a reduced pressure.
  11. A device according to claims 6 to 10, in which each of the compartments (31, 32) of the tank (30) contains a substance, with the substances being mixed together on the first occasion that the actuator member is actuated.
  12. A device according to claim 7, in which the elongate member is a rod (25), and the rod (25) includes an end (25b) outside the body (1), which end is pointed.
  13. A device according to claim 7, in which the elongate member is a rod (25), and the rod (25) includes an end (25b) outside the body (1) in the vicinity of which end outside reliefs (28, 28a) are formed.
  14. A device according to claim 13, in which said reliefs (28) are longitudinal grooves hollowed out in the rod (25).
  15. A device according to claim 13, in which said reliefs (28a) are longitudinal ribs formed on the outside of said rod (25).
  16. A device according to claims 6 to 11, in which the elongate member is a rod (25), and said rod (25) includes an end (25b) outside the body (1), which end is enlarged.
  17. A device according to any preceding claim, in which the inlet passage (14) includes a peripheral inside sealing rib (14b) which bears resiliently against the elongate member (5, 25).
  18. A device according to any preceding claim, in which the inlet passage (14) is an elongate duct.
  19. A device according to claim 1, in which:
       a valve member (6, 7, 8) is slidably mounted in the body (1) and is interposed between the actuator member (3) and the elongate member (5, 25);
       a resilient means (10) urges the valve member (6, 7, 8) away from the elongate member (5, 25) towards the actuator member, thereby urging the actuator member towards a rest position;
       the body (1) includes a cylindrical wall (4) against which the valve member (6, 7, 8) engages in sealed manner when it is displaced a first distance H2 from its rest position towards the inlet passage (14);
       the actuator member (3) includes a piston (2) sliding in sealed manner inside the body (1) and an outlet passage (3a) forming a valve seat (7a);
       the valve body includes a punch (7) adapted to bear in sealed manner against the valve seat (7a) closing the outlet passage (3a) under drive from the resilient means (10);
       the elongate member (5, 25) is not in sealed contact with the inlet passage (14);
       the elongate member slides with friction inside said inlet passage; and
       before the actuator member (3) is actuated for the first time, the elongate member is separated from the valve member (6, 7, 8) by a second distance H3 which is greater than or equal to zero and which is strictly less than the first distance H2;
       such that when the valve member (6, 7, 8) is displaced towards the elongate member (5, 25) through a third distance H1 which is strictly less than the first distance H2, and when a gas is injected under pressure via the inlet passage (3a), said gas can flow towards the inlet passage (14) and the elongate member (5, 25) limits the movement of the valve member (6, 7, 8) towards the inlet passage (14) against the force applied to the valve member by the flow of gas.
  20. A device according to claim 19, in which the friction between the elongate member (5, 25) and the inlet passage (14) is such that the elongate member is not displaced so long as it is subjected to a force no greater than about 49 N (5 kg).
  21. A device according to claim 19 or claim 20, in which the elongate member is a tube (5) and the tube includes an end (5c) close to the valve member (6, 7, 8), which end is cut in such a manner as to ensure that sealing is not obtained when the valve member (6, 7, 8) is pressed against the tube (5).
EP92400340A 1991-02-14 1992-02-10 Spraying or dispensing device for a fluid product comprising a sliding element within its inlet port Expired - Lifetime EP0499520B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9101724 1991-02-14
FR9101724A FR2672957B1 (en) 1991-02-14 1991-02-14 PUMP OR MANUAL VALVE COMPRISING A TUBE OR A ROD SLIDING IN ITS INTAKE DUCT.

Publications (2)

Publication Number Publication Date
EP0499520A1 EP0499520A1 (en) 1992-08-19
EP0499520B1 true EP0499520B1 (en) 1995-05-10

Family

ID=9409698

Family Applications (2)

Application Number Title Priority Date Filing Date
EP92400340A Expired - Lifetime EP0499520B1 (en) 1991-02-14 1992-02-10 Spraying or dispensing device for a fluid product comprising a sliding element within its inlet port
EP92400374A Expired - Lifetime EP0499537B1 (en) 1991-02-14 1992-02-12 Spraying or dispensing device for a fluid product comprising a sliding dip tube in its inlet port

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP92400374A Expired - Lifetime EP0499537B1 (en) 1991-02-14 1992-02-12 Spraying or dispensing device for a fluid product comprising a sliding dip tube in its inlet port

Country Status (3)

Country Link
EP (2) EP0499520B1 (en)
DE (2) DE69202356T2 (en)
FR (1) FR2672957B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19749514A1 (en) * 1997-11-08 1999-05-12 Pfeiffer Erich Gmbh & Co Kg Delivery of a mixture of media for e.g. pharmaceutical products
FR2776633B1 (en) * 1998-03-26 2000-06-09 Valois Sa AIRLESS DISTRIBUTION DEVICE
DE102007033375B4 (en) 2007-07-18 2014-10-30 Gaplast Gmbh container

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278189A (en) * 1979-12-17 1981-07-14 Ethyl Products Company Accumulative pressure pump
DE3545409C2 (en) * 1985-12-20 1994-02-24 Pfeiffer Erich Gmbh & Co Kg Discharge device for flowable media
FR2593147B1 (en) * 1986-01-17 1988-03-18 Aerosol Inventions Dev STERILE PACKAGING OF LIQUID AND SEMI-LIQUID FLUID SUBSTANCES.

Also Published As

Publication number Publication date
DE69202486D1 (en) 1995-06-22
FR2672957B1 (en) 1993-11-12
EP0499537A1 (en) 1992-08-19
DE69202486T2 (en) 1996-01-25
FR2672957A1 (en) 1992-08-21
EP0499520A1 (en) 1992-08-19
EP0499537B1 (en) 1995-05-17
DE69202356T2 (en) 1995-10-26
DE69202356D1 (en) 1995-06-14

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