Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
  • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
  • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
  • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
  • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
  • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
  • B05B11/104—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being opened by pressure after a defined accumulation stroke
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1042—Components or details
  • B05B11/1073—Springs
  • B05B11/1074—Springs located outside pump chambers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1094—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle having inlet or outlet valves not being actuated by pressure or having no inlet or outlet valve
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1001—Piston pumps
  • B05B11/1021—Piston pumps having an outlet valve which is a gate valve
  • B05B11/1022—Piston pumps having an outlet valve which is a gate valve actuated by pressure
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1042—Components or details
  • B05B11/1066—Pump inlet valves
  • B05B11/107—Gate valves; Sliding valves

Definitions

• the present invention relates to a fluid product dispensing member generally intended to be associated with a fluid product reservoir to constitute together a fluid product dispenser. It is a dispensing member, the actuation of which is generally carried out manually using a finger of the user.
• the fluid product is distributed in the form of a jet of fine spray droplets, a continuous stream or even a dab of fluid product, particularly in the case of viscous products, such as cosmetic creams.
• a fluid dispenser member can in particular be used in the fields of perfumery, cosmetics or even pharmacy to distribute more or less viscous products.
• the present invention relates more particularly, but not exclusively, to a type of dispensing member which is commonly designated by the term "push-pump".
• the dispensing member comprises a pusher not only forming a dispensing orifice but further defining a part of a fluid chamber in which the fluid is selectively pressurized.
• a pump it is a pump chamber.
• a special feature of this push-button pump is that an internal surface of the push-button, of generally substantially cylindrical shape, serves as a sealed sliding barrel for a piston which moves in sealed contact in this barrel, thereby selectively unmasking the orifice of distribution.
• This piston is generally a piston of the differential type which moves in response to a change in pressure of the fluid inside the chamber. This differential piston is to be distinguished from the main piston, the displacement of which is generated by the actuation of the pusher.
• a differential piston and a main piston displaceable in sealed contact in respective drums.
• the main barrel for the main piston can also be formed by the pusher. This is notably the case in the pump described in document WO 97/23304.
• the pusher comprises a bearing wall on which pressure is exerted using a finger to actuate the pusher.
• the pusher comprises a skirt which extends downwards from the support wall. This skirt forms a first sealed sliding barrel for a differential piston and a second main ft for the main piston of the pump.
• the differential piston is dissociated from the main piston.
• the differential piston is biased away from the support wall by a spring which serves both as a return spring and as a precompression spring.
• the sliding barrel of the differential piston is formed with an outlet duct which leads to an attached nozzle in a housing formed in the skirt of the pusher.
• This nozzle forms a dispensing orifice at the level of which the fluid product leaves the dispensing member.
• the housing formed by the skirt is produced with a swirl system which cooperates with the nozzle to drive the fluid product in a swirl movement before exiting through the dispensing orifice.
• This swirl system is conventionally constituted by one or more tangential swirl channels opening into a swirl chamber precisely centered on the dispensing orifice.
• the swirl system is in the form of a recess network inside the housing of the skirt. This recess network is then completed by the attached nozzle which isolates the swirl channels as well as the chamber.
• the sliding barrel of the differential piston is in the form of a cylindrical surface only interrupted at the outlet channel.
• the main piston rises in the main barrel of the pusher, which has the effect of displacing the differential piston by sealed sliding inside the differential barrel.
• the active sealing lip of the differential piston which is in direct contact with the fluid, slides in the lower part of the barrel located under the outlet channel.
• the pump of document WO 97/23304 consists of five essential constituent elements, namely a body intended to be associated with a reservoir of fluid product, the pusher, a ball forming an inlet valve, the differential piston and the nozzle.
• the body forms the main piston.
• the purpose of this is to simplify a dispensing member of the type described in the aforementioned document of the prior art so as to reduce the number of component parts.
• a particular aim is to dispense with an attached sprinkler.
• Another object is to conserve the swirl system which contributes to the quality of the distribution of the fluid product.
• Another object of the invention is to improve the cooperation between the differential piston and the pusher, in particular the sealed sliding contact and the creation of the outlet passage for the fluid product.
• the present invention provides a fluid dispenser member comprising a dispensing wall defining an external surface and an internal surface, said wall being crossed by a dispensing orifice connecting the internal surface to the external surface.
• the internal surface forming a sealed sliding barrel for a piston capable of moving in sealed contact in said barrel to selectively unmask the dispensing orifice
• said piston forming a wall element of a chamber of fluid product in which product fluid is selectively pressurized, characterized in that the internal surface extends over two surface sections, namely an upper section and a lower section, the upper section having an internal diameter smaller than that of the lower section, the orifice dispenser being formed at the upper section, the piston comprising a l sealing lip in leaktight sliding contact with the lower section.
• This type of distribution member can be a pump of the push-pump type, but it can also be other types of distribution members.
• the pusher is separated from the distribution wall.
• the distribution wall is fixed relative to the reservoir, or even movable relative to the pusher.
• the sliding barrel, the dispensing orifice and the swirl system are formed integrally by the dispensing wall.
• the internal surface, at the level of the upper section forms a swirling system of fluid product immediately upstream of the dispensing orifice.
• the fact of sliding the lip on a section offset from the section where the dispensing orifice is formed is particularly advantageous as regards the molding of the dispensing wall.
• the distribution wall is very generally made from molded injected plastic.
• this spindle must form the swirl system. Since the swirl system expands to form a hollowed-out part in the sliding barrel, the spindle must form a corresponding imprint which projects outwards. Thus, during the withdrawal of the spindle during demolding, the protruding impression must be forcibly removed the protruding impression must therefore leave the hollowed-out part only to form it and move over an axial extent of the barrel. sliding given that the plastic is flowable, the forceful passage of the projecting imprint marks very little the sliding was.
• the present invention is not limited to the case where the distribution wall forms a swirl system.
• the piston comprises a second lip in sealed sliding contact with the upper section.
• the piston is out of contact with the upper section. In this case, there is no upper lip.
• the piston comprises a tight stop edge in tight stop contact against a stop surface, the piston being resiliently biased against this tight stop surface in the rest position, the sealed contact between the abutment edge and the abutment surface hermetically isolating the chamber from the dispensing orifice.
• the abutment surface is frustoconical and biases the abutment edge radially outward.
• the distribution wall is formed by a pusher further comprising a support wall which extends on its outer periphery by the distribution wall, the abutment surface being formed by the support wall.
• the surface sections are cylindrical and connected by a transition section, which is advantageously frustoconical.
• the distribution wall is formed by a substantially cylindrical skirt further comprising a guide wall defining an internal surface which advantageously extends substantially in the extension of the lower section, the guide wall comprising internal hooking means in abutment with external holding means.
• the guide wall of the pusher surrounds the part of the body forming the holding means.
• the sealing lip in contact with the lower section is resiliently biased towards the upper section in the rest position. The stop edge can be implemented without the lower lip sliding on a lower section of larger diameter.
• FIGS. 1 and 2 are vertical cross-sectional views through a distributor equipped with a distribution member according to an embodiment of the invention in the rest state
• - Figure 2 is a partial view enlarged in Figure 1
• - Figure 3 is an even more enlarged view of a detail of the dispensing member of the invention.
• the dispensing member 600 in FIGS. 1 and 2, is shown associated with a container 650 comprising a body 651 internally defining a reservoir of fluid product 5.
• the body 651 is provided at its upper end with an opening in the form a collar 653, which is used for fixing the dispensing member of the invention.
• the dispensing member 600 comprises three constituent elements, namely a body 610, a pusher 620 and a piston member 630.
• the dispensing member further comprises spring means 640, here in the form of a spring with black pudding.
• the body, the pusher and the piston member are preferably made by molding plastic material.
• the dispensing member has the design of a pump comprising a pump chamber 1.
• the body 610 comprises a fixing ring 611 which cooperates with the neck
• the ring 611 is engaged with the outside of the neck 653.
• the body 611 also forms a guide and holding bush 614.
• the upper end of the guide bush 614 is formed with an outer shoulder 6141, which serves as external holding means.
• the body also forms a main barrel 617 which internally defines a sealed sliding surface, the function of which will be given below.
• the body also forms a dip tube 615 which extends inside the container 650.
• the dip tube 615 is extended at its upper end by an inlet sleeve 616 which forms a profile or seat of an inlet valve.
• the dip tube 615 and the sleeve 616 are traversed by an inlet conduit 618.
• the inlet sleeve 616 extends concentrically inside the main barrel 617, so that an annular space is formed between them.
• the body 610 has an axial symmetry of revolution about an axis X which extends longitudinally to the axial center of the inlet duct 618. This is a particular design for a particular body of an organ distribution according to a non-limiting embodiment of the invention. Of course, the body can have other characteristics than those which have just been described, without however departing from the scope of the invention.
• the pusher 620 forms a dispensing head of the dispensing member.
• the pusher 620 comprises a support wall 621 and a peripheral skirt 622 which extends downwards from the external periphery of the support wall.
• the pusher 620 has a general shape of an inverted bucket, the support wall of which forms the bottom and the skirt the cylindrical side wall.
• the skirt is not necessarily cylindrical in shape. It can have tapered or rounded sections.
• the support wall 621 includes an external support surface 6211 which can be pressed using one or more finger (s).
• the support wall 621 comprises an internal surface 6212 which advantageously forms one or more stop studs 6213.
• the skirt 622 comprises an upper distribution wall 623 and a lower guide wall 624.
• the wall distribution wall 623 is connected at its upper end to the external periphery of the support wall 621.
• the distribution wall 623 comprises an external surface and an internal surface. This internal surface is preferably circular cylindrical and defines a sliding barrel as will be seen below.
• the internal surface defines two cylindrical internal surface sections 6232 and 6242 connected by a transition section 6243, which can be stepped or tapered.
• the two sections include an upper section 6232 and a lower section 6242.
• the upper section has an internal diameter smaller than that of the lower section.
• the upper section is connected to the support wall, and more particularly to the internal surface 6212 of the support wall.
• a peripheral annular groove 6214 is formed which comprises an abutment surface 6213, advantageously re-positioned in a frustoconical manner.
• the upper section is formed with a through dispensing orifice 625 which extends from the inner surface to the outer surface.
• the dispensing orifice 625 can open out at the external surface in a diffusion cup 6251.
• the upper section 6232 of the dispensing wall 623 is formed with a swirl system 626 which allows entraining fluid in rotation in the form of a swirl whose eye is centered on the dispensing orifice.
• the distribution wall 623 which is advantageously repositioned in a single piece with the support wall 621 and the guide wall, 624, is crossed by.
• a dispensing orifice and comprises an internal surface formed with a swirl system, at the level of the upper section.
• the guide wall 624 extends in the extension of the distribution wall 621, and more precisely of the lower section 6242.
• the boundary between the guide wall and the distribution wall is not clearly defined, so that the lower section can be considered as part of the distribution wall and / or the guide wall.
• the guide wall comprises a stop bead 6241 on its internal surface intended to cooperate with the shoulder 6141 of the guide bush 614.
• the guide wall 624 surrounds the guide bush 614 concentrically.
• the stop bead 6241 makes it possible to secure the pusher to the body, which can thus only move axially over a maximum stroke determined by the distance separating the lower end of the guide wall from the fixing ring 611.
• the piston member 630 comprises, in this embodiment, a main piston 636 engaged in sealed sliding in the main barrel 617 and a differential piston formed by two lips 632 and 633 in sealed sliding contact in the barrel formed by the surface internal of the distribution wall 623.
• the two lips 632 and 633 are formed on the outer periphery of the plate
• the piston member 630 is advantageously made in one piece.
• the lips 632 and 633 extend one above the other with a spacing greater than the axial extent of the swirl system 626.
• the upper lip 632 is in contact of the upper section 6232 above the swirl system 626, while the lower lip 633 comes into contact with the lower section 6242 below the swirl system 626.
• the swirl system cannot communicate with the inside the pusher except at the level of the space formed between the two lips 632 and 633.
• the piston member advantageously also comprises an abutment edge 6321 located near the lip 632.
• This has ridge extends concentrically inside the lip 632, since the lip is formed by an outer edge and the ridge by an inner edge of an annular flange.
• the stop edge 6321 is intended to come into tight stop contact against the tight stop surface 6321 formed by the support wall.
• the edge is biased by the spring 640 towards the surface, and the tight contact is established in the rest position, shown in FIGS. 1 to 3.
• the truncation of the surface 6213 tends to push the edge 6321 radially towards the exterior, which has the effect of pressing the lip 632 further against the upper surface section 6232. A better seal is thus obtained in the rest position.
• the piston member 630 also forms an axial central rod 637 which extends from the plate 631 away from the bearing wall 621. This axial rod 637 is partially engaged inside the inlet sleeve 616 formed by the body 610.
• the rod 637 forms a valve profile 638 intended to cooperate with the corresponding profile formed by the sleeve 616.
• the rod 637 in cooperation with the sleeve forms an inlet valve for a chamber pump 1, as will be seen below.
• the piston member 630 forms a piston crown 635 at the lower end of which the main piston 636 is formed.
• the piston crown 635 extends concentrically around the axial rod 637, so as to define between them an annular duct which extends through the plate 631 through fluid passage holes 634.
• the body 610, the pusher 620 and the piston member 630 together form a pump chamber 1 which extends continuously between the main barrel 617 and the sleeve 616, between the piston crown 635 and the axial rod 637, in the through holes 634, and between the plate 631 and the internal surface of the support wall 621.
• the upper surface of the plate 631 and the internal surface form wall elements of the pump chamber 1.
• the spring 640 pushes the piston member 630 into abutment against the support wall 621.
• the valve inlet formed in cooperation between the axial rod 637 and the sleeve 616 is open.
• the two lips of the differential piston are in contact with the barrel formed by the internal surface of the distribution wall 623.
• the abutment edge is in sealed contact with the abutment surface 6321.
• the pump chamber is thus perfectly isolated from the dispensing orifice in the rest position.
• the movement of the pusher has the effect of closing the inlet valve: the axial rod 637 engages more deeply in the sleeve 616 until a sliding tight contact is created between the sleeve or the rod.
• the pump chamber 1 is isolated from the reservoir 5. From this moment, the product in the pump chamber 1 will be pressurized. Because the fluid product is incompressible, the total useful volume of the pump chamber remains necessarily constant. But as the main piston 636 sinks into the barrel 617 thereby reducing the volume of the lower part of the chamber, a new volume must be created. This is possible because the differential eye moves away from the support wall
• the upper lip 632 is directly in contact with the fluid, while the lower lip is not directly in contact with the fluid.
• the upper lip slides in the upper part of the barrel defined by the upper section above the swirl system.
• this part of the barrel has a better surface quality than the lower part of the upper section which extends just below the swirl system, which can be damaged by the withdrawal of the molding pin.
• the lower lip 633 slides against the lower surface section, which cannot have been damaged by the removal of the molding spindle which served to form the swirl system, since its internal diameter is greater to that of the spindle.
• An advantageous characteristic of the invention resides in the fact that the piston member 640 is biased against the bearing wall 621 and moves under the effect of the pressure increase inside the pump chamber in distance from this support wall. This is in particular made possible thanks to the fluid passage holes 634 which pass through the plate 631 forming the differential piston. It can also be said that the support wall defines a wall element of the pump chamber. Such displacement of the differential piston away from the support wall 5, in association with a swirl system formed in the distribution wall, is advantageous in terms of demoulding since the upper lip 632 slides in leaktight manner on the upper part of the sliding barrel which will not be damaged by the removal of the molding spindle forming the negative imprint which was used to mold the swirl system.
• the rest position is reached when the stop bead 6241 formed by the guide wall 624 is in abutment under the outer shoulder 6141. It is quite possible to remove the upper lip 632 of the differential piston , so that the latter is then only provided with a lower lip 633 and an abutment edge. Indeed, the edge guarantees a static seal at rest, which is sufficient. As for the lower lip, it guarantees dynamic sealing during actuation. Thus, the front wall 6323 of the differential piston which faces the dispensing orifice and the swirl system can remain detached from the dispensing wall, except at the level of the lower lip 633. As soon as the stop edge is takes off from the abutment surface, the passage between the chamber and the dispensing orifice is established.
• a lip of the differential piston slides in a cylinder which cannot be damaged by the withdrawal of the molding spindle, and particularly in the case where the distribution wall forms a swirl system.
• the difference in diameter between the upper section and the lower section achieves this result.
• the sliding of the plunger around the bushing of the body makes it possible to re-position a dispenser whose diameter of the plunger is identical to or greater than that of the body and of the reservoir.
• the pusher can extend in the extension of the reservoir, which gives a more tubular appearance to the dispenser. This characteristic can be implemented independently of the characteristics linked to the differential piston.

Landscapes

• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Closures For Containers (AREA)
• Reciprocating Pumps (AREA)
• Coating Apparatus (AREA)
• Sealing Devices (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=34833977

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (3)

Family Cites Families (4)

• 2004
  • 2004-02-23 FR FR0401789A patent/FR2866579B1/fr not_active Expired - Fee Related
• 2005
  • 2005-02-14 WO PCT/FR2005/050093 patent/WO2005084820A1/fr active Application Filing
  • 2005-02-14 ES ES05717711.5T patent/ES2532120T3/es active Active
  • 2005-02-14 CN CN2005800057117A patent/CN1921952B/zh active Active
  • 2005-02-14 BR BRPI0507319-7A patent/BRPI0507319B1/pt not_active IP Right Cessation
  • 2005-02-14 EP EP05717711.5A patent/EP1722896B1/de active Active
  • 2005-02-14 JP JP2006553629A patent/JP2007522933A/ja not_active Withdrawn

Non-Patent Citations (1)

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