FR3118955A1 - "Fluid Dispenser" - Google Patents

Abstract

"Fluid dispenser" The invention relates to a fluid dispenser device comprising: An outlet (24), a pocket (2) having an interior volume for containing a fluid, the interior volume being delimited at least in part by a movable wall ( 22), a tank (6) arranged to contain the fluid, the tank being provided with an upper opening (124) facing the pocket and a lower opening (87), for filling the tank (6); said lower opening (87) being arranged to allow a passage of fluid, so as to at least partially fill the reservoir (6) with fluid at least up to the supply valve. See Figure 24.

Description

“Fluid Dispenser”

The present invention relates to a device for dispensing a fluid.

Such a device allows a user to dispense a fluid. The field of the invention is more particularly that of the distribution of products such as liquids, gels or creams, for example for the pharmaceutical or cosmetic or food industry.

State of the prior art

Fluid dispensers are known, as disclosed for example by the document WO2015155318.

In this area, manufacturers are making constant efforts to try to improve and/or simplify the compactness, use, ergonomics, manufacture and refilling of such fluid dispenser devices, to improve hygiene, recycling.

The object of the present invention is to solve at least one of these problems.

According to a first aspect of the invention, there is proposed a device for dispensing a fluid, comprising:

• a pocket having an interior volume arranged to contain the fluid, the interior volume being delimited at least in part by a deformable wall,
• a support surface arranged to, under the exertion of pressure, reduce the interior volume of the pocket by deforming the deformable wall,
• output,
• a dispensing valve, and which in an open state allows a passage of fluid from the interior of the pocket towards the outlet, and, in a closed state, does not allow a passage of fluid from the interior of the pocket towards the exit,
• a reservoir,
• a supply orifice connecting the reservoir to the interior volume of the pocket,
• at least one orifice or filler hole each opening onto the inside of the tank, and at least one plug closing this at least one orifice.

The filling holes can be two in number and are located on either side of the outlet.

Each filling hole can pass through a tip.

The mouthpiece can be inserted into a wall of the tank so that the bag is inserted into the tank.

A single plug can be arranged for simultaneously:

• plug the filling hole or holes, and
• plug and/or protect the outlet.

The cap can be removable by means of a hinge.

According to a second aspect of the invention, there is proposed a device for dispensing a fluid comprising:

- output,

- a pocket having an interior volume to contain a fluid, the interior volume of the pocket being delimited at least in part by a movable wall,

- a reservoir arranged to contain the fluid and comprising two openings including an upper opening oriented towards the pocket and a lower opening,

- a distribution valve which, in an open state, allows fluid to pass from the pocket to the outlet, and, in a closed state, does not allow it,

- a supply valve which, in an open state, allows the passage of the fluid contained in the reservoir towards the pocket, and which, in a closed state, does not allow it,

said lower opening being arranged to allow passage of the fluid, so as to fill the reservoir at least partially with fluid.

The reservoir can be delimited by:

- a flexible wall comprising the two openings, the upper opening facing the pocket and the lower opening, and,

- a back wall, arranged to block the lower opening.

The tank can be fitted with a neck for filling the tank.

The tank can be placed in a container, the wall can include:

• a plug arranged to block the lower opening
• means of attachment to the container

The plug, the bottom wall and its fixing means can be made in one piece.

The cap can slide with the bottom wall during the screwing of the cap on the neck.

The device may comprise a bottom wall is connected to side walls, preferably nested with the bottom wall and arranged to:

• hide or hide the tank, and
• maintain the tank before pumping operations

when the lower opening is screwed to the rigid wall

The flexible wall can be attached to the pocket:

• by welding, and/or
• by clipping, and/or
• by interlocking, and/or
• by compression of the flexible wall around its upper opening between, on the one hand, a part forming or integral with the pocket and located outside the tank and, on the other hand, a ring inserted inside the tank
• by compression of the flexible wall around its opening towards the bottom wall by the deformation of a ring of material from the bottom wall.

The area of a section of the upper opening can be at least eight times smaller than the area of a section of the lower opening.

The flexible wall can be arranged to deform so as to reduce the internal volume of the reservoir when the fluid exits from the reservoir.

The device can be arranged to rotate and/or translate the reservoir relative to the container when closing the neck after filling the reservoir and while the reservoir is located inside the container.

The flexible wall can be made by blowing the anti-rotation means are at least one relief such as a bump of the flexible wall.

The device may comprise a rigid wall inside which a piston slides and at least one hole made in the piston or between the piston and the side wall, said hole is arranged to bring the air out of the tank 6 when inserting part of the piston 86 into the reservoir.

The device may comprise a piston with two lips, a first upper lip of which is arranged to penetrate into the tank in a non-sealed manner and a second lower lip arranged to penetrate into the reservoir in a sealed manner.

The device may comprise a piston, a lower lip of which is attached to the bottom wall by elastic means arranged to disengage during introduction into the lower opening.

The device may comprise a deformable wall and a container arranged to contain the piston or the flexible walls, the deformable wall and the container being grouped together in a single piece of the same material without material discontinuity, or, manufactured in the same piece by overmolding or bi-injection.

According to a third aspect of the invention, there is proposed a device for dispensing a fluid comprising:

- output,

- a pocket having an interior volume to contain a fluid, the interior volume of the pocket being delimited at least in part by a movable wall,

- a tank arranged to contain the fluid, the tank being provided with a neck for filling the tank

- a distribution valve which, in an open state, allows fluid to pass from the pocket to the outlet, and, in a closed state, does not allow it,

- a supply valve which, in an open state, allows the passage of the fluid contained in the reservoir towards the pocket, and which, in a closed state, does not allow it,

- a container attached to the pocket and inside which the tank is located,

The device comprises means for rotating and/or translating the reservoir relative to the container when closing the neck after filling the reservoir and while the reservoir is located inside the container.

The device may comprise at least one intermediate piece connecting the container to the walls of the reservoir, this intermediate piece being connected to the container and to the walls of the reservoir in a removable manner, preferably by screwing.

The device may not include any other intermediate piece connecting the container to the walls of the reservoir over at least half, or even preferably at least two thirds, of the elongation of the container and/or the walls of the reservoir from the neck but outside the neck.

All the preceding technical characteristics can be claimed independently of each other.

Description of figures and embodiments

Other advantages and particularities of the invention will appear on reading the detailed description of implementations and non-limiting embodiments, and of the following appended drawings:

the is a profile sectional view of the first embodiment of a device 101 according to the invention, the reservoir being reduced in its length, cap open,

the is a perspective view of the first embodiment of the device 101 according to the invention, the cap being removed,

the is a profile sectional view of the first embodiment of a device 101 according to the invention, the reservoir being reduced in its length, cap dislocated, open,

the is a profile sectional view of a second embodiment of a device 102 according to the invention,

the is a profile section of the second embodiment of a device 103,

the is a side sectional view of part of the second embodiment 103 of the device according to the invention,

the is a side sectional view of part of the second embodiment of the device 103 according to the invention,

the is a side sectional view of part of the second embodiment of the device 103 according to the invention,

the is a side sectional view of part of the second embodiment of the device 103 according to the invention,

the is a side sectional view of part of the second embodiment of the device 103 according to the invention,

] the is an exploded perspective view of the second embodiment of the device 103 according to the invention without the dispensing part,

the is a side sectional view of the second embodiment of a device 104 according to the invention.

the is a zoom of a profile section of part of the second embodiment of the device 104 according to the invention,

the is a side sectional view of the second embodiment of a device 105 according to the invention.

the is a profile sectional view of the second embodiment of the device 105 according to the invention in a variant of the bottom wall,

the is a perspective view of the second embodiment of the flexible wall of the device 105 according to the invention,

the is a profile sectional view of the second embodiment in a tank variant of the device 105 according to the invention,

the is a side sectional view of the second embodiment of the reservoir of the device 105 according to the invention,

] the is an exploded perspective view of the second embodiment of the device 105,

the is a profile sectional view of the second embodiment of the device 105 according to the invention in its flat version,

the is a zoom of a profile section of the second embodiment of part of the device 105 according to the invention.

the is a zoom of a profile section of the second embodiment of part of the device 105 according to the invention,

the is a zoom of a profile section of the second embodiment of part of the device 105 according to the invention,

the is a side sectional view of the second embodiment of a device 106 according to the invention.

the is a side sectional view of the second embodiment of a device 106 according to the invention

the is an exploded perspective view of the second embodiment of device 106.

the is a zoom of a profile section of the second embodiment of part of the device 106 according to the invention

the is a zoom of a profile section of the second embodiment of part of the device 106 according to the invention

the is a zoom of a profile section of the second embodiment of part of the device 106 according to the invention

the is an exploded perspective view of the second embodiment of part of the device 106 in a non-cylindrical version,

the is a side sectional view of the second embodiment of a device 107 according to the invention.

the is a side sectional view of the second embodiment of part of the device 107 according to the invention,

the is a profile sectional view of the second embodiment of the device 107 according to the invention,

the is a side sectional view of the second embodiment of part of the device 107 according to the invention,

the is a profile sectional view of a third embodiment of a device 1060 according to the invention,

the is an exploded perspective view of the third embodiment of the device 1060 according to the invention.

These embodiments being in no way limiting, variants of the invention may in particular be considered comprising only a selection of characteristics described or illustrated below isolated from the other characteristics described or illustrated (even if this selection is isolated within a sentence including these other features), if this selection of features is sufficient to confer a technical advantage or to differentiate the invention from the state of the prior art. This selection includes at least one preferably functional feature without structural details, and/or with only part of the structural details if only this part is sufficient to confer a technical advantage or to differentiate the invention from the state of the art anterior.

We will first describe, with reference to Figures 1 to 3, a first embodiment of device 101 according to the invention for dispensing a fluid.

Unless otherwise stated and in a purely illustrative manner:

• each valve of the device 101 (preferably flexible) is typically made of thermoplastic elastomer (TPE) or (TPO)
• all the other rigid parts of the device 101 are made of polypropylene or polyethylene
• the reservoir can be a multilayer film made up of different materials, or preferably materials from the polyolefin family.

The fluid comprises a liquid and/or a gas, and is preferably a liquid, cream, paste, gel or mixture thereof.

The device 101 for dispensing a fluid comprises a pocket 2 having an interior volume arranged to contain the fluid, the interior volume being delimited at least in part by a deformable wall 22.

The pocket 2 is formed by a bottom wall 21 (also called pocket wall 21) and by the flexible deformable wall 22.

The pocket walls 21 and the deformable wall 22 face each other.

The deformable wall 22 has a concave shape oriented towards the bottom wall 21.

The deformable wall 22 is fixed or welded to the bottom wall 21.

The bottom wall 21 is a rigid wall, that is to say more rigid than the wall 22.

The walls 21 and 22 are for example made of polypropylene or polyethylene.

The device 101 comprises a dispensing part 23 comprising a dispensing housing 8. The pocket 2 is connected to the dispensing housing 8.

The device 101 comprises a support surface 25 arranged to, under the exertion of pressure, reduce the interior volume of the pocket 2 by deforming the deformable wall 22.

Device 101 includes an output 24.

Exit 24 leads to the outside of device 101.

The outlet 24 is preferably located on the distribution piece 23.

The device 101 comprises a dispensing orifice 18 connecting the pocket 2 to the dispensing housing 8.

The device 101 comprises a dispensing valve 5 located in the dispensing housing 8, and which in an open state, allows a passage of fluid from the interior of the pocket 2 to the outlet 24 passing through the dispensing orifice 18 and by the distribution housing 8, and, in a closed state, does not allow a passage of fluid from the inside of the pocket 2 towards the outlet and through the distribution housing 8.

The support surface 25 is arranged to, under the exertion of pressure, reduce the interior volume of the pocket 2 by deforming the deformable wall 22, more precisely by crushing it in the direction of the pocket wall 21

The dispensing part 23 is arranged to, by exerting pressure on the bearing surface 25, move at least according to a translational movement.

The deformable wall 22 has a shape memory. When this wall 22 is not subjected to any external constraint, it resumes or remains in its shape (preferably concave) which maximizes the volume of the pocket 2.

The device 101 comprises a supply port 41 connected with a reservoir 6 of fluid.

The reservoir 6 is delimited at least in part by a flexible wall 108 or a flexible bag 14, typically a multilayer film.

The device 101 comprises a supply orifice 41 connecting the reservoir 6 to the interior volume of the pocket 2. The orifice 41 coincides with an opening 124 of the reservoir 6 connecting it to the pocket 2.

The device 101 comprises a supply valve 4 which, in an open state, allows a passage of fluid from the reservoir 6 towards the interior of the pocket 2 via the supply orifice 41, and, in a closed state , does not allow a passage of fluid towards the interior of the pocket 2 passing through the supply orifice 41.

The supply valve 4 is located inside the pocket 2 and is arranged for:

• in its closed state, press against the supply port 41, and
• in its open state, move away from the feed port 41.

The supply valve 4 (movable between its closed and open positions) is, in its closed state, held pressed against a stationary part (called the supply seat, which at least partially surrounds the periphery of the supply orifice 41 associated) and "rigid" (i.e. not made of flexible material) of an internal wall of the pocket 2. More precisely, the supply valve 4 comprises a membrane which, in the closed state of the supply valve 4, is held pressed against the feed seat, and moves away from this feed seat in its open state.

The feeding seat is located inside pocket 2, on pocket wall 21.

At rest, that is to say without the device 101 undergoing stress or external force, the valve 5 is in its closed state.

Preferably, even if it is less essential, at rest, that is to say without the device 101 undergoing any constraint or external force, the valve 4 is also in its closed state.

When bag 2 is filled with fluid to be dispensed and the volume of bag 2 decreases (for example due to an increase in pressure on bearing surface 25):

• dispensing valve 5 moves away from dispensing seat 13 and valve 5 is in its open state; fluid exits through outlet 24 and pocket 2 empties at least partially,
• the supply valve 4 is pressed against the supply orifice 41 and the valve 4 is in its closed state; fluid cannot (or hardly ever) escape from pocket 2 to tank 6.

When bag 2 is filled with fluid to be dispensed and the volume of bag 2 increases (for example by releasing pressure on bearing surface 25):

• the dispensing valve 5 presses against the dispensing seat 105 and the valve 5 is in its closed state; fluid cannot pass from pocket 2 to outlet 24
• the supply valve 4 is "sucked in" and moves away from the supply port 41 and the valve 4 is in its open state; fluid can pass from conduit 6 to pocket 2 so as to fill pocket 2.

A distribution channel connects outlet 24 to the inside of pocket 2. This distribution channel includes housing 8.

The bottom wall 21 is integral with a tip 89 also called "eye" 89.

The device 101 comprises the reservoir 6 delimited by the walls 14, 108 which are fixed to the end piece 89, or more precisely a flexible bag 14, 108 welded to the end piece 89.

Bag 2 is located inside reservoir 6 or bag 14.

Outlet 24 is arranged to distribute fluid in a direction substantially parallel to bearing surface 25.

A cap 77 to block the outlet 24 is arranged to pass between two positions:

• a closed position in which a part 771 (nipple) of the plug 77 is inserted into the outlet 24 so as to block or protect the outlet 24 from dirt, the distance between the closure of the dispensing valve 5 is at a distance of less than 6 mm or less than 4 mm from exit 24.
• an open position (shown in the ) in which this part 771 of plug 77 is no longer inserted into outlet 24.

Pocket 2 is located inside tank 6.

The device 104 comprises the supply valve 4 which, in an open state, allows a passage of fluid from the supply conduit towards the inside of the pocket 2 passing through the supply orifice 41, and, in a closed state, does not allow a passage of fluid from the supply conduit to the inside of the pocket 2 through the supply orifice.

The supply valve 4 is integral with the distribution valve 5.

The supply valve 4 and the distribution valve 5 are in a single piece of a single material.

The part 23 and the pocket wall 21 are in one and the same piece with no material discontinuity.

The end piece 89 and the part 23 are in one and the same piece without material discontinuity.

There are one or two filling holes 87, 87b each opening onto the inside of the tank 6.

Preferably, these filling holes are two in number and are located on either side of the outlet 24.

These filler holes go through part 89.

A single plug 310 is arranged for simultaneously:

• plug the filling hole or holes, and
• block and/or protect exit 24.

The cap 310 is removable by means of a hinge.

The device according to the invention may include an air pocket, and this air pocket may include an extraction hole 11 arranged to extract the air from this pocket. This extraction hole is located at a distance of less than 3 cm from at least one of the filling holes, so that the fluid to be dispensed does not come out through the filling hole when placing the device under vacuum.

Figures 4 to 33 illustrate a second embodiment of six devices 102, 103, 104, 105, 106, 107 only the differences with the device 101 of the will be described.

Each of the device embodiments 102, 104, 105, 106, 107 for dispensing fluid includes:

- exit 24,

- the pocket 2 having an interior volume to contain a fluid, the interior volume of the pocket 2 being delimited at least in part by the movable wall 22,

- the reservoir 6 arranged to contain the fluid and comprising two openings, the upper opening 124 of which is oriented towards the pocket 2 and a lower opening 87, said reservoir 6 being arranged to reduce its internal volume when the fluid exits from the reservoir,

- the distribution valve 5 which, in an open state, allows fluid to pass from the pocket 2 to the outlet 24, and, in a closed state, does not allow it,

- the supply valve 4 which, in an open state, allows the passage of the fluid contained in the reservoir 6 to the pocket 2, and which, in a closed state, does not allow it.

The lower opening 87 is arranged to allow a passage of the fluid, preferably a passage of a cannula (or filling pipe) transporting the fluid, so as to fill the reservoir 6 with fluid at least partially up to at least the supply valve 4 so that the fluid is in contact with the supply valve 4 and preferably so as to also fill the internal volume of the pocket 2 with at least part of the fluid.

The supply valve is arranged to let the cane or cannula pass, for example by bending.

With reference to the , the dispensing part 23 (also called dispensing head 23) comprises:

• a 70 cap, and
• optionally an insert 71.

Note that the deformable wall 22 is not movable in the cap 70. There is no part of the movable pocket function in the cap 70. The cap 70 is mounted superimposed on the flexible wall 22. The wall 22 is a bellows or the base of a dome with an upper edge 228 connected to the cap 70 in continuity of material or overmolding or bi-injection, and a lower edge 229 connected to the wall 118 of reservoir 6 in continuity of material or overmolding or bi-injection.

The junctions and/or connection with the edges 229 and 228 are sealed.

The deformable wall 22 is mounted superimposed on the wall 118 of the reservoir 6.

The dispensing piece (23) comprising a cap (70)

the support surface (25) forming part of the distribution piece (23)

the housing (8) being located inside the cover (70)

the cap (70) being mounted superposed on the deformable wall (22).

the deformable wall (22) and the cap (70) are:

- grouped together in a single piece of the same material without material discontinuity, or

- manufactured in the same part by overmolding or bi-injection.

The dispensing valve 5 is in a housing located inside the at least one part 70 (of the dispensing piece 23) having a continuity of material with the wall 22, this housing is lateral and is positioned between the pocket 22 and the outlet 24. The connection between the cap 70 and the insert is sealed so as to have a pocket 38 of air or gas sealed.

The reservoir 6 arranged to contain the fluid and comprising two openings, the upper opening 124 of which is oriented towards the pocket 2 and a lower opening 87, said reservoir 6 being arranged to reduce its internal volume when the fluid exits from the reservoir during pressing on the wall 25 once the device has been initiated, this phase is subsequently called the pumping operation.

Reservoir 6 comprises a rigid wall 99 inside which slides a piston 86.

The piston 86 is between the tank 6 and a bottom wall 91. The piston 86 is inserted into the opening 87 after filling the tank 6 through the opening 87, it forms a plug 310. The tank 6 has a cylindrical shape and elongated

Reservoir 6 includes a side wall 118 or container 118 between bottom wall 91 and pocket wall 21.

The side wall 118 is part of a part 10 arranged for:

- contain the piston 86,

-maintain the pocket wall 21 by tightening,

- form the wall 22 by continuity of the same material or in two different materials by bi-injection at the junction 229.

The deformable wall 22 and the wall 10 are:

- grouped together in a single piece of the same material without material discontinuity, or

- manufactured in the same part by overmolding or bi-injection.

At least one hole 95 made in the piston 86 or between the piston and the wall 99 allows the air to come out of the reservoir 6 when inserting a part of the piston 86 (more precisely the upper part) into The reservoir. Thus the piston 86 comprises two lips of which a first upper lip 88 (oriented towards 124) is arranged to penetrate into the reservoir in a non-sealed manner since it is provided with at least one hole 95, and a second lower lip 28 (oriented towards the bottom 91) arranged to enter the tank 6 in a sealed manner. Note that the piston 86 is made of a single piece, it is not fitted with a valve.

In order to reduce the air, the piston preferably comprises a domed wall 26. The dome shape 26 makes it possible to reduce the air between the piston and the product and to expel the cream or the product to be dispensed on the sides against the wall 99 when inserting the piston into the tank.

As long as the lower lip 28 of the piston is not fitted into the internal walls 99 of the reservoir 6, the air contained in the reservoir can escape from the device.

The at least one hole 95 is arranged to also allow passage of the fluid between the reservoir 6 and a sealing zone 97 between the piston 86 and the wall 99.

Typically there are several holes 95. Apertures 95 may be slots around upper lip 88.

With reference to FIGURES 5 to 10, the reservoir 6 is delimited at least in part by a movable piston 86 arranged to move so as to reduce the internal volume of the reservoir 6 when the fluid exits from the reservoir 6, this piston 86 being provided with the lower opening 87, the lower opening 87 being closed by a removable plug 310.

The removable cap 310 is screwed onto the piston 86.

The piston 86 is between the tank 6 and a bottom wall 91, said preferably rigid bottom wall 91 being provided with means 93 to block the rotation of the piston 86 during the screwing of the cap 310 on the piston 86 when the piston 86 is in contact with the bottom wall 91.

The bottom wall 91 is provided with fixing means 45 to fit together preferably by snap-fastening with the rigid wall 118 of the reservoir.

Different variants of this embodiment can be combined with each other:

• in the variant illustrated on the the means 93 typically comprise, for example, a slot into which a part of the piston 86 is inserted, and/or
• in the variant illustrated on the the means 93 typically comprise, for example, clipping means, and/or
• the piston can have a curved shape (disc, ellipse, or other) or a polygon. In the variant illustrated in the , the piston 86 has, in a cross-sectional view perpendicular to a direction of displacement of the piston 86 along a wall 99, a shape of a polygon comprising several sides connected by angles, the device further comprising a distribution piece of force 33 arranged to press piston 86 against wall 99 at several (preferably all) sides of the polygon but outside the corners of the polygon. In another variant, the distribution part 33 can be replaced by a variable thickness of the walls of the piston 86.

FIGURES 11 and 12 illustrate one embodiment of a device 104 for dispensing fluid. Only its differences with the device 103 of FIGS. 5 to 10 will be described.

Referring to Figures 11 to 12, the piston 86 is not drilled and does not include a filling opening, the filling opening 87 is formed by the lower edge of the walls 118 (more precisely the opening 87 is cylindrical ).

After the reservoir has been filled, the piston 86 is placed in the latter, more precisely they are placed by sliding in the cylinder 87, 118, preferably during this stage the bottom wall 91 is fixed to the piston.

The lower lip 28 is attached to the bottom wall 91 by elastic means 32 at least before the introduction into the opening 87.

During the introduction into the opening 87 the lip 28 provided with the elastic means 32 is deformed which has the effect of the displacement of the elastic means 32 towards the axis of the piston. This movement has the effect of separating the elastic means 32 from the bottom wall 91. In order to accentuate this deformation, it is advantageous to add a local surplus of material to the internal walls 99 of the reservoir 6, such as a ring of material 29. The elastic means 32 are arranged to detach easily from the bottom 91 from the first pumping operations (before the first 10 pumping operations), that is to say when the wall 22 is crushed once the device started.

Projecting walls 31 of the bottom 91 are arranged to hook with the elastic means 32 and raise the piston 86 relative to the bottom wall 91. At least a part of the projecting walls 31 are introduced between the elastic means 32 and the lip 28. The elastic means 32 can be clipped onto the projecting wall 31.

FIGURES 13-22 illustrate another embodiment of a device 105 for dispensing fluid. Only its differences with the devices 103 and 104 of FIGS. 5 to 12 will be described.

The wall 108 is flexible or mainly comprises flexible walls (hereinafter referred to as “flexible wall 108” or “wall 108”).

The tank 6 arranged to contain the fluid is delimited by:

- a flexible wall 108 comprising the two openings, the upper opening 124 facing the pocket 2 and the lower opening 87, and

- a bottom wall 91, 310 preferably removable, arranged to block the lower opening 87.

The cap 310 is integrated into the wall 91.

The flexible wall can for example be injected or thermoformed.

The area of a section of the upper opening 124 (this section being chosen to minimize the area of the upper opening 124) is at least six times (and even at least eight times) smaller than the area of a section of the lower opening 87 (this section being chosen to minimize the area of the lower opening 87).

The flexible wall 108 is arranged to deform so as to reduce the internal volume of the reservoir 6 when fluid exits from the reservoir 6.

The border 43 and/or the skirt 42 is arranged to seal between the inside of the tank and the outside of the device.

The device 105, more precisely the rigid wall 91, is arranged to maintain fixed the position of the lower opening 87 in the device 105 with respect to the position of the upper opening 124 in the device 105.

The flexible wall 108 is fixed to the pocket 2 according to a tight junction.

The flexible wall 108 comprises a cylinder 81 above the tank 6 allowing sealing. To have sealing, either this cylinder 81 is compressed (case of FIGS. 14 and 16), or it is nested (case of ). It is preferable to have a second cylinder concentric with the first cylinder 81.

The device 105 comprises means 110 (optional) for internal guiding of the cap (which is the part forming the internal volume of the pocket 2 and further containing the dispensing valve 5). The means 110 are arranged to guide a movement of the cap. The means 110 take the form of a low wall 110 emerging from the bottom wall 21.

Different variants of this embodiment 105 can be combined with each other:

• the flexible wall 108 is fixed to the bag 2 according to a tight junction:
  • by welding, and/or
  • by clipping (by a clip 83), and/or by interlocking, as illustrated in the variant of figure 13 and/or
  • by compression of the flexible wall 108 around its upper opening 124 between on the one hand a part forming or integral with the pocket 2 and located outside the tank 6 and on the other hand a ring 109 (and whose upper edge forms the supply seat 62 as previously described) inserted inside the tank 6, as illustrated in the variants of Figures 14 and 16, 18. In the variant of Figure 14, the ring 109 is integral with the wall rigid 91 and the ring 109 and the wall 91 form the same part with continuity of material, while in the variant of Figures 16 and 18 the ring 109 and the wall 91 form two separate parts without continuity of material; and or
• the flexible wall 108 and the supply valve 4 are formed in the same part with continuity of material (as illustrated in FIGS. 16 to 18) or in two distinct parts without continuity of material (as illustrated in FIGS. 13 to 15) .

Referring to Figures 19 to 22, the device 105 is "flat". In order to reduce the air trapped during closing, a retaining element 17 makes it possible to maintain the walls of the tank on the sides, but does not seal. Indeed, sealing is achieved by axial crushing instead of lateral crushing. If the reservoir is injected into a flexible material, there is no need for an additional seal, but if the reservoir is thermoformed, it is preferable to add a seal 39. The seal 39 comprises at least one flexible face in contact with the wall 108 to ensure a seal between the tank 6.

Note that the bottom wall 21 includes a ring 48 at the level of the opening 104, this ring is deformed (in a direction opposite to the center of the hole 41) preferably by ultrasound and is arranged to compress the wall 108 of the reservoir.

The through 29 illustrate another embodiment of a device 106 for dispensing fluid according to the second aspect. Only its differences with the device 105 of FIGS. 13 to 22 will be described.

With reference to the , the wall 91 is screwed onto a neck 87 of the tank 6.

This neck 87 of reservoir 6 forms an inlet orifice to fill reservoir 6 when this neck is not screwed to wall 91.

The wall 91 therefore forms a stopper for this neck 87. The wall 91 integrates in a single piece, preferably in the same material, the stopper 310 arranged to be screwed onto the neck 87 and fixing means 45 arranged to fit together with the wall 12, preferably by snap-fastening.

The wall 91 is connected to side walls 12 arranged for, when this neck is screwed to the wall 91:

• hide tank 6, and
• hold tank 6.

These side walls 12 are nested or snapped with the wall 91. the wall 91 comprises snap-fastening means 45.

The tank is blown in PE (Polyethylene) or PP (Polypropylene).

Reservoir 6 includes a bump 60 arranged to be welded to bottom wall 21.

The wall 12 and the wall 21 form a container 122 arranged to contain the tank 6.

The side wall 12 is part of a part 100 or wall 100 arranged for:

-contain the flexible walls 108,

-maintain by tightening the pocket wall 21

- form the wall 22 by continuity of the same material or in two different materials by bi-injection at the junction 229.

The deformable wall 22 and the wall 100 are:

- grouped together in a single piece of the same material without material discontinuity, or,

- manufactured in the same part by overmolding or bi-injection.

The wall 91 comprises screwing means 310 making it possible to close or plug the tank 6 in a leaktight manner. During the screwing operation, the tank can lift (translate towards the wall 91) and/or deform by extending towards the bottom wall 91. Only the bottom wall 91 is rotated by an external tool (not shown) in order to close the neck of the tank 6.

Once the screwing operation is complete, an axial force on the wall 91 towards the tank makes it possible to fix the wall 91 with the wall 12.

The wall 91 comprises fixing means 45 to the container 122. The fixing means can preferably comprise interlocking, and more preferably an interlocking with snapping of the wall 91 with the container 122, more precisely with the wall 12.

The wall 91 makes it possible to close or plug the container 122, preferably in a non-airtight manner.

The deformable wall 22 and the wall 12 of the container 122 are:

- grouped together in a single piece of the same material without material discontinuity, or

- manufactured in the same part by overmolding or bi-injection.

With reference to Figures 24 to 29, the device 106 of Figures 24 to 29 is distinguished by the following elements.

The flexible wall 108 of the tank 6 is itself enclosed in a wall 12 of a container 122.

First of all, it includes a tank anti-rotation system 6:

• in the case of the embodiment common to FIGS. 24 to 28, this anti-rotation system takes the form of:
  • At least one relief 40 of the wall 108 of the reservoir 6, preferably several reliefs 40 (typically hollows or bumps respectively)
  • At least one relief, preferably several reliefs (typically bumps or hollows respectively) on the wall 12 and/or 21 and/or 91 arranged to block the rotation of the reliefs of the wall 108 and therefore block the rotation of the reservoir 6 (preferably , the relief of the wall 12 comprises at least one fin 19 which extends along the axis of elongation of the container 122),
• in the case of the embodiment of the , this anti-rotation system comprises the square or polygonal or more generally non-cylindrical shape of the wall 108, and the square or polygonal or more generally non-cylindrical shape of the wall 12.

The walls 108 and the reliefs 40 are preferably made by injection blow molding or extrusion blow molding. It is noted that the relief(s) 40 are made on a side wall of the reservoir 108 (relative to the axis of elongation of the reservoir).

The neck 87 and the bump 60 are more rigid than the side walls of the tank 6.

The flexible side walls of the tank 6 are typically around 0.15 to 0.4 mm in order to optimize its emptying. These thin walls pose a problem of rigidity when closing the tank. Unlike the device of the , this anti-rotation device prevents excessive twisting of the tank (typically less than 20 degrees).

The wall 91 and the plug 310 are two separate parts.

Rails 90 allow the cap 310 to slide with the bottom wall 91. These rails make it possible to drive the cap 310 in rotation when the wall 91 is turned, this sliding prevents the reservoir from lifting when screwing, the cap 310 can translate even if the bottom wall 91 comes into contact with the end of the side wall 12 before interlocking, in particular at the level of the interlocking or snap-fastening means 45. The plug is arranged to slide with the bottom wall 21 at least at the end of tightening.

The plug 310 is held in the part 91 (for example by clipping means with a clearance allowing axial sliding) and can slide in the part 91.

The cap is maintained with the wall 91 at the start of the pumping operations but can detach from the bottom 91 after a certain number of pumping operations.

The walls 108 of the tank 6 include a neck 85.

The neck 85 of the walls 108 of the tank 6 comprises threads arranged to cooperate with the plug 310.

The walls 108 are pierced opposite the neck 85 so as to form the opening 124 fixed to the bottom wall 21.

The cap 310 includes a hollow 311 so as to reduce the air in the tank 6 after closure.

The container 122 is closed by pressing on the part 91 after the screwing phase of the stopper 310 with the neck 85.

A rib or fin 19 in the container 122 is arranged to block the walls 108 of the tank 6.

With reference to the , initially the pocket wall 21 is assembled with the flexible wall 108. Then, optionally, the valve 4 is inserted, the at least assembly 21 and 108 is inserted into the container 122 up to the foot of the wall 22, the assembly being held by clamping the piece 100 with a side part of the pocket wall 21.

Note that the elements 91 and/or 310, connected to the neck 85, is an intermediate part between the walls 12 and 108. The part 91 and/or 310 is located at one of the ends of the device 106. Apart from the intermediate piece(s) 91, 310 connected to the neck 85, there is no other intermediate piece connecting the walls 12 and 108 over at least one half (or even at least two thirds) of the elongation of the walls 12, 108 from neck 85 but outside neck 85.

It is further noted that this or these intermediate pieces 91 and/or 310 are connected to the walls 12, 108 without gluing or welding or coextrusion, which is advantageous for the recycling of the device.

This or these intermediate parts 91 and/or 310 are therefore removable (by screwing, disengagement) with respect to the walls 12, 108.

The to 33 illustrate another embodiment of a device 107 for dispensing a fluid according to the invention. Only its differences with the device 106 will be described.

Referring to Figures 30 to 33, the neck 85 has no screw thread. Means 84 hold reservoir 6 during insertion of plug 310.

The means 84 are a border or a hollow at the level of the neck 85.

A tool 82 keeps the means 84 immobile (attached to the neck 85) during the insertion of the stopper 310.

In the embodiment of Figures 32 and 33, the reservoir can be compressed, which allows a lower junction height between parts 12 and 91.

Conversely, in the embodiment of Figures 30 and 31, the junction height between the parts 12 and 91 must be higher because the tank is not compressible but the height of the part 91 must allow the use of tool 82.

The and 35 illustrate another embodiment of a device 1060 for dispensing a fluid according to the invention. Only its differences with the device 106 will be described.

Referring to Figures 34 to 35, in this embodiment, the tank anti-rotation system 6 comprises:

• as shown in figures 34 and 35
  • one or more reliefs 40 (typically respectively hollow or bumps) of the wall 108 of the reservoir 6
  • one or more reliefs (typically bumps or hollows respectively) on the wall 12 and/or 21 arranged to block the rotation of the reliefs of the wall 108 and therefore block the rotation of the reservoir 6, (preferably these reliefs are arranged on the wall 12 and comprise at least one fin 19 which extends along the elongation axis of the device),

• in a variant not shown, it includes the square or polygonal or more generally non-cylindrical shape of the wall 108, and the square or polygonal or more generally non-cylindrical shape of the wall 12.

Unlike the previous embodiments for which the openings 87, 124 were separate and located on either side of the reservoir 6 at two different locations (preferably opposite) of the reservoir 6, the device 1060 comprises orifices 87 and 124 coincident at the same level. The bottom wall 21 acts as a rigid wall 91 is provided with screwing means 310. These screwing means 310 can be arranged to slide (more precisely the wall 44) in the bottom wall 21 in a sealed manner, this allows prevent the tank 6 from lifting when screwing the bottom wall 21. Once the screwing operation is complete (the skirt of the cap allowing sealing), an axial force towards the tank at the foot of the deformable wall 22 allows the snap-fastening of the head of the device 1060 (more particularly of the dispensing head) thanks to the snap-fastening means 47.

Note that in all the embodiments described above, the device is arranged to operate (i.e. to distribute fluid through the outlet via the supply and/or distribution valves) with its distribution head upwards ( i.e. outlet 24 located above tank 6) or downwards (i.e. outlet 24 located below tank 6). Once the screwing operation is complete, the wall

Claims (13)

Device for dispensing a fluid comprising:
- an output (24),
- a pocket (2) having an interior volume to contain a fluid, the interior volume of the pocket being delimited at least in part by a movable wall (22),
- a reservoir (6) arranged to contain the fluid and comprising two openings including an upper opening (124) oriented towards the pocket and a lower opening (87),
- a neck (85) of the tank (6),
- a distribution valve (5) which, in an open state, allows fluid to pass from the pocket (2) to the outlet, and, in a closed state, does not allow it,
- a supply valve (4) which, in an open state, allows the passage of the fluid contained in the reservoir towards the pocket, and which, in a closed state, does not allow it,
said lower opening (87) being arranged to allow a passage of fluid, so as to at least partially fill the reservoir (6) with fluid. Device according to Claim 1, characterized in that the reservoir (6) arranged to contain the fluid is delimited by:
- a flexible wall (108) comprising the two openings, the upper opening (124) facing the pocket and the lower opening (87), and
- a bottom wall (91), arranged to block the lower opening. Device according to Claim 2, characterized in that the reservoir (6) is placed in a container (122), the bottom wall (91) comprises:

• screwing means or a plug (310) arranged to block the lower opening (87)
• attachment means (45) to the container (122).

Device according to Claims 2 to 3, characterized in that the bottom wall (91) fitted with the stopper (310) and the fixing means (45) are made in one piece, preferably from the same material. Device according to Claims 2 to 4, characterized in that the stopper (310) is arranged to slide with the bottom wall (91) at least at the end of the screwing of the stopper (310). Device according to claim 2 or 3, characterized in that the bottom wall (91) is connected to side walls (12), preferably nested with the bottom wall (91), and arranged to:

• Hide or hide the tank (6), and
• maintain the tank (6) when the lower opening (87) is screwed to the wall (91) at least before pumping operations.

Device according to any one of Claims 2 to 5, characterized in that the flexible wall (108) is fixed to the pocket:

• by welding, and/or
• by clipping, and/or
• by interlocking, and/or

by compressing the flexible wall (108) around its upper opening (124). Device according to any one of the preceding claims, characterized in that it further comprises means (40, 82, 84) for rotating and/or translating the reservoir (6) relative to the container (122) during closing the neck (85) after filling the tank (6) and while the tank (6) is located inside the container (122). Device according to Claim 8, characterized in that the flexible wall (108) is produced by blow molding and that the anti-rotation means are at least one relief (40) of the flexible wall (108). Device according to any one of Claims 2 to 9, characterized in that the upper opening (124) and the lower opening (87) are distinct and separate, and preferably located opposite one of the different from the core of the reservoir. Device according to Claim 1, characterized in that the reservoir (6) comprises a rigid wall (99) inside which a piston (86) slides and at least one hole (95) made in the piston (86) or between the piston (86) and the rigid wall (99), said hole (95) is arranged to cause the air to exit outside the tank (6) when inserting a part of the piston (86) into the tank. Device according to Claim 11, characterized in that the piston 86 comprises two lips, of which a first upper lip (88) arranged to penetrate into the reservoir in a non-sealed manner and a second lower lip (28) arranged to penetrate into the reservoir (6) in a watertight manner. Device according to Claim 11, characterized in that the piston (86) comprises a lower lip (28) attached to the bottom wall (91) by elastic means (32) arranged to come apart during introduction into the opening. lower (87).