FR3098734A1 - Fluid dispenser - Google Patents

Abstract

The invention relates to a fluid dispensing device comprising a bag and a dispensing head fixed to the deformable wall of the bag so that the dispensing head is carried by the deformable wall in different possible positions with respect to the reservoir, of which at the bottom. minus a stable position in the absence of an external force exerted on the head and a position inclined at an angle of inclination from the stable position when exerting an external force on the head, so as to deform the deformable wall and thus reduce the internal volume of the pocket relative to the stable position and / or an inner pocket (21) and an outer pocket (22), said inner pocket (21) being located at least partly in the outer pocket (22), the internal volume of the internal pocket (21) being delimited at least in part by a piston (5) integral with a junction wall (7) delimiting at least in part the internal volume of the poc he outer (22), and by a housing (9) of the piston (5) arranged to receive the piston (5) and guide it during an axial movement (11) of said piston (5) in the housing. Figure for the abstract: Fig. 19

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 field, the manufacturers are making permanent efforts to try to improve and/or simplify the compactness, the use, the ergonomics, the manufacture, the recharging, the hygiene and/or the recycling of such fluid dispenser devices. .

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

According to a first aspect of the invention, the invention makes it possible to achieve at least one of the aforementioned aims by means of 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 reservoir having an inner casing arranged to contain the fluid,
• a supply orifice connecting the internal volume of the tank to the internal volume of the bag,
• preferably, a dispensing head fixed to the deformable wall of the pouch so that the dispensing head is carried by the deformable wall in different possible positions relative to the reservoir, including at least:

* a stable position in the absence of external force exerted on the head and

* an inclined position at an angle of inclination relative to the stable position when an external force is exerted on the head, so as to deform the deformable wall and thus reduce the interior volume of the pocket relative to the steady position.

The device according to the invention may further comprise,

• a dispensing channel, preferably located in the dispensing head, and arranged to conduct the fluid, along a dispensing direction, from the interior volume of the pocket and towards an outlet, said outlet being positioned at one end of the head of distribution,
• a dispensing orifice connecting the interior volume of the pouch to the dispensing channel.

The dispensing head preferably extends longitudinally over a length of at least 10 mm along a longitudinal direction connecting the dispensing orifice to one end of the dispensing head and/or a direction connecting the dispensing orifice to the outlet and/or to the surface defined below.

The dispensing head of the device according to the invention can extend longitudinally over a length of at least 20 mm, preferably at least 30 mm, ideally at least 40 mm.

The dispensing head of the device according to the invention may be a straight piece extending longitudinally in the longitudinal direction.

The dispensing head can be longer (along the longitudinal direction) than wide (perpendicular to the longitudinal direction).

Preferably, the dispensing head, apart from its stable position and according to different possible inclined positions, can be arranged to reach a position of maximum inclination when the angle of inclination is inclined by at least 15°, or even 20 degrees (°), preferably at least 30 degrees or even at least 45 degrees, relative to said stable position, said position of maximum inclination being able to be arranged to reduce the internal volume of the pocket.

Preferably, the dispensing head may comprise a contact surface arranged to, from outside the device, receive an external force orthogonal to the longitudinal direction of the dispensing head positioned in the stable position.

The contact surface of the device according to the invention can be at least 10 mm².

The dispensing head can be arranged to tilt to the side opposite the contact surface.

The dispensing head may be a straight piece extending longitudinally in the longitudinal direction.

In this case, the dispensing head and the reservoir can extend longitudinally in the longitudinal direction when the head is in its stable position. In other words, the dispensing head and the reservoir can extend in the same direction of the device according to the invention.

Preferably, the dispensing head may comprise a dispensing valve located in the dispensing channel, and which, in an open state, allows fluid to pass from the dispensing channel to the outlet, and, in a closed state, does not allow it. not.

In this case, the device according to the invention (and in particular the dispensing valve) can be arranged to remain in its closed state as long as the angle of inclination is less than 5°, preferably less than 2° , with respect to the stable position.

The dispensing head may comprise two separable parts, including:
- an upper part, in which the dispensing valve is located, and,
- a lower part fixed to the pocket and comprising an anti-drip device,
the anti-drip device being located at the junction of these two parts and comprising a valve in the distribution channel, which:
- is arranged to be open and allow the passage of fluid to the outlet when these two parts are assembled, and,
- Is arranged to be closed when these two parts are separated so as to prevent an outflow of fluid from this lower part to the outside of the device.

The dispensing valve may comprise a part arranged to maintain the valve of the anti-drip device in its open state, that is to say in a position which allows the passage of the fluid towards the outlet, when the two parts of the head are assembled. Said part of the dispensing valve can be an end of the dispensing valve and is preferably of triangular or tapered shape.

Preferably, the deformable wall can comprise an asymmetry around an axis, so that the pocket is arranged to promote inclination of the dispensing head according to a favored direction of inclination and/or in such a way as to reduce the effort of distribution in one direction, said favored direction being opposite the contact surface and/or the outlet.

The device according to the invention may further comprise means for screwing the pocket to the reservoir.

In another embodiment, the bag and the reservoir of the device according to the invention can be secured to each other so as to form a single and unique piece, said piece being able to be obtained by blow molding.

In other embodiments, the bag may include a tip arranged to fit into the reservoir.

The tip end can form the feed port.

The mouthpiece can be pushed into the reservoir so as to secure the bag to the reservoir.

In this case, the reservoir may include a sealing skirt positioned at the level of the supply orifice, said skirt comprising a cover, preferably of one material, arranged to block the circulation of fluid contained in the reservoir towards the pocket. as long as the end piece of the pocket is not pushed into the reservoir, for example as long as the end piece of the pocket is not fitted and/or screwed into the reservoir.

Preferably, the tip can be arranged to pierce the seal. It can be at least 8 mm long (preferably in the longitudinal direction).

The device according to the invention may comprise a supply valve positioned at the level of the supply orifice, and 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.

In this case, the tank can be arranged to reduce its internal volume after each opening state of the supply valve.

The tank can be equipped with a part comprising:

• the supply valve housed at a supply seat, said valve being located at the junction between the interior volume of the pocket and an interior volume of the reservoir, and/or
• a support and/or stopper preferably provided with a seal housed in a dispensing seat, said support and/or stopper being located at the junction between the interior volume of the pouch and the dispensing channel, and/or
• a connecting element connecting the supply valve and the support and/or stopper, said connecting element being preferably arranged to deform or break upon deformation of the bag

this aspect of the invention can be claimed as such independently of the dispensing head and/or its inclination.

This part allows mounting of the supply valve through the pocket.

The connecting element can be flexible or breakable after assembly of the device according to the invention.

The dispensing head can be fitted with a perforator designed to perforate the lid of the stopper housed in the dispensing seat.

In one embodiment, the deformable wall of the pocket of the device according to the invention may comprise a bellows, the device possibly comprising locking means arranged to limit and/or prevent stretching of one of the sides of the bellows during any inclined position of the dispensing head.

The blocking means can be and/or comprise a rigid box.

The dispensing head can be equipped with a pusher arranged for:

• flatten against a pocket holding surface, preferably on a bellows holding surface, and
• keeping said holding surface stationary with respect to the dispensing head.

The holding surface can be flat and/or rigid.

The blocking means can press on the pusher, said pusher itself being able to press on the holding surface.

The pusher and the holding surface can be kept assembled by tightening the locking means on a box containing the reservoir.

The holding surface may be rigid.

The device according to the invention may comprise means for screwing the pouch onto the dispensing head.

The deformable wall of the pocket may include zones of weakness and/or joints arranged to allow at least one inclined position (with a preferential angle allowing metering, defining a volume of fluid leaving the pocket), and preferably stable, of the dispensing head in the absence of external force applied to the contact surface.

The reservoir may comprise a deformable casing delimiting at least in part the internal volume of the reservoir, said deformable casing possibly comprising radially successive undulations.

According to a second aspect of the invention, the invention makes it possible to achieve at least one of the aforementioned aims by means of a device for dispensing a fluid, comprising:

• a pocket comprising an interior pocket and an exterior pocket, said interior pocket being located at least partly in the exterior pocket, said interior and exterior pockets each having an interior volume arranged to contain the fluid, said interior volume of the exterior pocket being delimited at least in part by a movable wall, said movable wall being arranged to, under the exertion of pressing pressure, reduce the interior volume of the interior pocket and the interior volume of the exterior pocket by deforming and/or while moving,
• an outlet arranged to distribute the fluid.

The interior volume of the interior pocket is preferably delimited at least in part by:

• a piston secured to a junction wall delimiting at least in part the interior volume of the exterior pocket,
• a piston housing arranged to receive the piston and guide it during an axial movement of said piston in the housing.

The device according to the invention is arranged to guide the fluid along a circuit comprising:

• a first course, passing:
  • from the interior of the outer pocket to the interior of the inner pocket (preferably of the piston) via at least one connection orifice connecting the interior volume of the outer pocket to the interior of the inner pocket (preferably of the piston ), And
• a second path, passing from the inside of the inner pocket (preferably the piston) to the exit.

The device according to the invention may comprise braking means arranged to block an axial movement of the piston in the housing reducing the interior volume of the interior pocket and of the exterior pocket when the mobile wall is subjected to a bearing pressure lower than a threshold force.

In this case :

• the braking means may be integral with the piston and may preferably comprise at least one tongue inclined towards the outside of the piston, and/or
• the braking means can be integral with the housing of the piston and can preferably comprise at least one tongue inclined towards the inside of the housing.

The device according to the invention can be arranged to guide the fluid along the second path, each time the pressure on the moving wall is greater than the threshold force and/or each time the interior volume of the interior pocket and of the pocket decrease. exterior for which the connection orifice is closed.

The device according to the invention can be arranged to guide the fluid along the first path, after the end of each pressing pressure greater than the threshold force, and/or at each increase in the interior volume of the interior pocket and of the pocket exterior for which the connection orifice is open.

The connecting hole:

• may be formed at a junction between one end of the piston and one end of the piston housing, and/or
• may include a hole located in the piston housing.

The connection orifice can preferably be arranged for:

• close during a movement of the piston reducing the interior volume of the pocket,
• open during a movement of the piston increasing the interior volume of the pocket.

The device according to the invention may comprise a distribution channel arranged to conduct the fluid coming from the inner pocket towards the outlet.

In this case, the device according to the invention may comprise a dispensing valve located in the dispensing channel and arranged to conduct the fluid from the inner pocket to the outlet.

The device according to the invention may further comprise:

• the dispensing valve,
• a mixer arranged to receive different separate flows of fluid and mix them in the form of a spray at the outlet.

One end of the dispensing valve can be secured to a rod arranged to sink into the mixer so as to form various channels arranged to conduct the various separate flows of fluid to the mixer.

The mobile wall can be a deformable wall.

The movable wall may comprise the junction wall.

The mobile wall can be separated from the junction wall.

The movable wall can be rigid.

The device according to the invention may comprise a reservoir communicating with the outer pocket via a supply orifice, said reservoir comprising an interior volume arranged to contain the fluid, said interior volume being delimited at least in part by a deformable envelope.

The deformable shell of the tank may comprise successive radial undulations around an axis.

The first aspect and the second aspect of the invention can be combined with each other.

Detailed description of figures

Other advantages and characteristics will appear on examination of the detailed description of non-limiting examples, and of the appended drawings in which:

FIGURE 1 is a side sectional view of a first embodiment of a device according to the invention, one dispensing head of which is in a stable position,

FIGURE 2 is a side sectional view of the first embodiment of the device according to the invention, the dispensing head of which is in an inclined position,

FIGURE 3 is a perspective view of the first embodiment of the device according to the invention, the dispensing head of which is removed,

FIGURE 4 is a zoom of a side view of the first embodiment of the device according to the invention,

FIGURE 5 is a schematic representation of a non-limiting exemplary embodiment of a cap provided with a lid according to the invention,

FIGURE 6 is a schematic representation of a non-limiting exemplary embodiment of a supply valve according to the invention,

FIGURE 7 is a side sectional view of a second embodiment of a device according to the invention, the dispensing head of which is in the stable position,

FIGURE 8 is a profile sectional view of the second embodiment of the device according to the invention, the dispensing head of which is in the inclined position,

FIGURE 9 is an exploded perspective view of the second embodiment of the device according to the invention, the dispensing head of which is in the stable position

FIGURE 10 is a side sectional view of a reservoir and a pocket of the second embodiment of the device according to the invention after partial emptying of the reservoir

FIGURE 11 is a profile sectional view of the pocket and the reservoir of the second embodiment of the device according to the invention after complete emptying of the reservoir

FIGURE 12 is a cross section of the lower part of the tank of Figure 10

FIGURE 13 is an exploded perspective view of a third embodiment of the device according to the invention, the dispensing head of which is in the stable position,

FIGURE 14 is a side sectional view of the third embodiment of a device according to the invention, the dispensing head of which is in the stable position,

FIGURE 15 is a side sectional view of the third embodiment of a device according to the invention, the dispensing head of which is in the inclined position,

FIGURE 16 is a zoom view of the profile section of the third embodiment of the device according to the invention during a stretching of the reservoir 6 for its filling,

FIGURE 17 is a side sectional view of part of a fourth embodiment of a device according to the invention,

FIGURE 18 is a perspective view of part of the fourth embodiment of the device according to the invention,

FIGURE 19 is a side sectional view of a fifth embodiment of a device according to the invention,

FIGURE 20 is an exploded perspective view of the fifth embodiment of the device according to the invention without its reservoir

FIGURE 21 is a side sectional view of a distribution channel of the fifth embodiment of the device according to the invention

FIGURE 22 is a cross section of the distribution channel of the fifth embodiment of the device according to the invention

FIGURE 23 is an exploded perspective view of a sixth embodiment of a device according to the invention,

FIGURE 24 is a side sectional view of the sixth embodiment of the device according to the invention, and

FIGURE 25 is a side sectional view illustrating a step of a manufacturing method of the sixth embodiment of the device according to the invention.

It is understood that the embodiments which will be described below are in no way limiting. In particular, variants of the invention may be imagined comprising only a selection of characteristics described below isolated from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention from the prior art. This selection includes at least one preferably functional feature without structural detail, or with only part of the structural detail if only this part is sufficient to confer a technical advantage or to differentiate the invention from the state of the prior art.

In particular, all the variants and all the embodiments described can be combined with each other if nothing prevents this combination from a technical point of view.

In the figures, the elements common to several figures retain the same reference.

We will first describe, with reference to FIGURES 1 to 6, a first embodiment of a device according to the invention for dispensing a fluid.

In FIGURES 1 to 3, the device 100 for dispensing 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 4,
• a reservoir 6 having an inner casing arranged to contain the fluid,
• a supply orifice 8 connecting the internal volume of the tank 6 to the internal volume of the bag 2,
• a dispensing head 10 fixed to the deformable wall 4 of the bag 2 so that the dispensing head 10 is carried by the deformable wall 4 according to different possible positions relative to the reservoir 6 including at least:

* a stable position 12 in the absence of external force 18 exerted on the head 10 and

* an inclined position 14 at an angle of inclination 16 with respect to the stable position 12 during the exercise of an external force 18 on the head 10, so as to deform the deformable wall 4 and thus reduce the internal volume of pocket 2 relative to stable position 12,

• a dispensing channel 20 located in the dispensing head 10 and arranged to conduct the fluid from the interior volume of the bag 2 and towards an outlet 24, said outlet 24 being positioned at one end of the dispensing head 10,
• a dispensing orifice 22 connecting the interior volume of the pouch 2 to the dispensing channel 20.

In the present description, all the positions of the head are defined in a frame of reference for which the supply orifice and/or the reservoir is fixed.

In the present description, “flexible” will mean any part that can deform under the effect of at least 1 kg, having for example a flexural modulus of less than 600 MPa and/or having a sufficiently reduced thickness.

In the present description, “rigid” will mean any part that cannot deform under the effect of a maximum of 1 kg, having for example a flexural modulus greater than 600 MPa and/or having a sufficiently large thickness.

The dispensing head 10 comprises a contact surface 26, arranged to, from outside the device, receive an external force 18 orthogonal to the longitudinal direction of the dispensing head 10 positioned in the stable position 12.

The dispensing head 10 of the device 100 extends longitudinally over a length of at least 10 mm (preferably at least 20 mm and even at least 30 mm or even at least 40 mm) according to:

- a longitudinal direction (carried by the axis A in Figure 1) connecting the dispensing orifice 22 to one end of the head 10 (preferably carrying the surface 26 and/or the outlet 24), and/or

- a direction (carried by the Z axis in Figure 1) connecting the dispensing orifice 22 to the outlet 24 and/or to the surface 26 (preferably carrying the outlet 24).

In particular, a long lever arm makes it possible to reduce the efforts allowing the distribution, for example less than 1 kg and even less than 0.5 kg if the device is an applicator for facial care (compared to a common pump requires an effort of support of the order of 2Kg). The dispensing head 10 and the reservoir 6 extend longitudinally in the longitudinal direction when the head is in its stable position.

The dispensing head is longer (along the longitudinal direction) than wide (perpendicular to the longitudinal direction).

The contact surface 26, accessible from the outside of the device 100 by a hand or even a fingernail of a user, or a face of a user, has a minimum surface of 10 mm², and preferably of at least 20 mm ² in the case where the contact surface 26 is intended to be in contact with the face.

Exit 24 is located on surface 26.

The dispensing head 10 is arranged to tilt to the side opposite the contact surface 26.

Pocket 2 is formed mainly in three parts. A first part, comprising the deformable wall 4, a second part comprising a rigid wall 54 and a third part 84 (of the pocket 2) arranged to be fixed to the reservoir 6.

The rigid wall 54 of the pocket 2 is located below the deformable wall 4. The deformable wall 4, more precisely its lower part, is fixed or integral with the rigid wall 54 of the pocket 2 at the level of the connection point 58.

The deformable wall 4 of the pocket 2 is formed by a part 4 ₁ and a part 4 ₂ .

Parts 4 ₁ and 4 ₂ face each other. The part 4 ₁ of the deformable wall 4 is arranged to bend under the effect of the compression of the force 18, the part 4 ₂ of the deformable wall 4 lengthens very slightly under the effect of the traction but moves less than the part 4 ₁ so as to favor the inclination of the head 10 of the device 100 on the side of the part 4 ₁ when the external force 18 is exerted at the level of the contact surface 26 of the dispensing head 10. so as to favor the inclination of the part 4 ₁ , the curvilinear length in a cutting plane of the part 4 ₁ of the dispensing head 10 in the stable position 12, is higher (ie longer) than that of the part 4 ₂ (which forms a hinge).

Thus, the deformable wall 4 comprises an asymmetry around an axis A, so that the pocket 2 is arranged to favor an inclination of the dispensing head 10 according to a favored direction of inclination, that is to say opposite to the contact surface 26 and/or the outlet 24. Thus, the parts 4 ₁ and 4 ₂ are asymmetrical so as to favor the inclination of the dispensing head 10 on the side of the part 4 ₁ .

Thus the deformable wall 4 of the pocket 2 comprises:

• a certain flexibility to allow the inclination of the dispensing head 10, that is to say the passage from its stable position 12 to a position of inclination 14, and
• an elastic return force arranged to reposition the dispensing head 10, inclined according to its position of inclination 14, in its stable position 12.

The deformable wall 4 is for example a thin wall and the rigid wall 54 is for example a thicker wall than the wall 4.

Preferably, the deformable wall 4 can be associated with the wall 54 by "co-moulding", that is to say either by overmolding or bi-injection of materials having different suppleness, preferably with PP for the rigid wall 54 of pocket 2 and TPO for the deformable wall 4 of pocket 2.

The parts 4 ₁ and 4 ₂ of the deformable wall 4 and the rigid wall 54 can also be injected in one go when the rigid wall 54 and the deformable wall 4 of the pocket are for example made of polypropylene.

The deformable wall 4 is preferably made of PP with a polymer or plastomer additive (such as for example Vistamaxx ^TM 6202), in order to reduce its hardness so that the hardness of the wall 4 is less than 80 Shore D. From then on, excessive finesse and fragilities of the wall 4 are avoided.

The rigid wall 54 is arranged to fit over the third part 84 of the pocket 2.

At the weld or connection point 58, a stop 66 materializes the junction between the third part 84 of the pocket 2 and the rigid wall 54 of the pocket 2. This stop 66 is orthogonal to the axis A when the device 100 is in a stable position 12.

The deformable wall 4 of the pouch 2 holds the dispensing head 10.

Pouch 2 is attached to dispensing head 10. Pouch 2 is in particular embedded in dispensing channel 20 of dispensing head 10 via a ring 88.

The dispensing head 10 comprises the ring 88, located at the junction between the interior volume of the bag 2 and the dispensing channel 20, in which the dispensing orifice 22 is housed. Specifically, at the level of said junction between the volume inside the pouch 2 and the dispensing channel 20, the deformable wall 4 of the pouch 2 is compressed against the dispensing channel 20 by the ring 88. The ring 88 is pinched, fitted into the dispensing head 10. The ring 88 is arranged to be fitted in force in the distribution channel 20.

The dispensing head 10, over its entire length, is traversed by the dispensing channel 20.

The distribution channel 20 begins at the level of the distribution orifice 22 and extends to the outlet 24 housed in the distribution head 10.

In addition, the dispensing head 10 comprises a dispensing valve 28 located in the dispensing channel 20, and which, in an open state allows passage of fluid from the dispensing channel 20 to the outlet 24, and, in a closed state , does not allow it.

The dispensing valve 28 is typically made of thermoplastic Polyolefin or TPO (polyolefin alloys: polyethylene and polypropylene) (flexible, recyclable), PolyPropylene (PP) or modified Polyethylene (PE). The TPO has the advantage of being flexible, more easily recyclable if we take the same sub-family (for example PP with TPO base PP).

The dispensing valve 28 is arranged to remain in its closed state as long as the angle of inclination 16 is less than 2° or 5° with respect to the stable position 12. The device 100 is arranged not to tilt more than 2 degrees as long as a threshold force is not reached, said threshold force corresponding, for example, to an external force (perpendicular to surface 26) of 0.5 kilograms (Kg).

For the device 100, if the external force 18 is greater than or equal to the threshold force of 0.5 kg then an overpressure in the pocket 2 and in the distribution channel 20 makes it possible to open the distribution valve 28, thus causing fluid distribution at outlet 24.

If the external force 18 is less than the threshold force when the dispensing head 10 is in its stable position 12, then the dispensing head 10 does not tilt more than 2 degrees with respect to its stable position 12. In the case where the dispensing head 10 is in a position of inclination 14, if the external force 18 is less than the threshold force but present to maintain the elastic return force of the bag 2 (precisely of the deformable wall 4 ), then the dispensing head 10 remains tilted in its tilting position 14.

In the case of FIGURES 1 to 3, the dispensing head 10 comprises two separable parts 10 ₁ , 10 ₂ , including:
- an upper part 10 ₁ , in which the dispensing valve 28 is located, and,
- a lower part 10 ₂ fixed to the bag 2 and comprising an anti-drip device 30.
The anti-drip device 30 is located at the junction of these two parts 10 ₁ , 10 ₂ and comprises a valve 30 ₁ in the distribution channel 20, which:
- Is arranged to be open and allow the passage of fluid to the outlet 24 when these two parts 10 ₁ , 10 ₂ are assembled, and,
- Is arranged to be closed when these two parts 10 ₁ , 10 ₂ are separated so as to prevent an outflow of fluid from this lower part 10 ₂ to the outside of the device.

The upper and lower parts 10 ₁ , 10 ₂ are nested one inside the other.

The dispensing valve 28 comprises a part 28 ₁ , in particular one of its ends 28 ₁ , arranged to hold the valve 30 ₁ of the anti-drip device 30 in its open state, that is to say in a position which allows the passage of the fluid towards the outlet 24, when the two parts 10 ₁ , 10 ₂ of the head 10 are assembled. The end 28 ₁ is of tapered shape so that it can open the valve 30 ₁ of the anti-drip device 30 in the direction of an internal wall of the distribution channel 20. In this configuration, the anti-drip device 30 allows the fluid contained in the bag 2 to be directed and routed to the outlet 24.

The distribution valve 28 comprises a part 28 ₂ held by clamping between internal walls of the distribution channel 20.

Dispensing valve 28 is housed in dispensing housing 80. Housing 80 is part of channel 20.

Part 28 ₂ is immobile between the open and closed states of dispensing valve 28.

A duct 28 ₃ allows the passage of fluid between the part 28 ₂ and the internal walls of the housing 80 in the direction of the outlet 24 when the valve 28 (and more precisely its mobile part 28 ₄ ) is open.

The dispensing valve 28 comprises a movable part 28 ₄ which, in the closed state of this dispensing valve 28, is pressed against a dispensing seat 105 so as to block this dispensing seat 105, and in the open state of this dispensing valve 28 moves away from the dispensing seat 105 so as to open this dispensing seat 105.

This part 28 ₄ is a membrane.

Dispensing valve 28 includes part 28₄which is inserted in the upper part 10₁of the distribution head 10. Part 28₄is the part of the dispensing valve 28 closest to exit 24. This part 28₄is the mobile membrane 28₄of the dispensing valve 28.

Part ₂₈₄ is movable between the open and closed states of dispensing valve 28.

The distribution seat 105 is a lateral part of the internal walls of the housing 80, that is to say that this seat 105 is limited to one face, preferably flat (or curved), of the internal walls of the housing 80, and does not does not go all the way around a section of the housing 80 which would be made in a plane perpendicular to the direction of elongation of the part of the housing 80 containing the valve 28.

In one embodiment of a method of manufacturing the device 100, the dispensing valve 28 is mounted in the dispensing housing 80 by inserting the dispensing valve 28 into the upper head 10 ₁ at the level of the junction between the upper head 10 ₁ and lower 10 ₂ before the upper 10 ₁ and lower 10 ₂ heads are assembled together.

The device 100, in particular the upper part 10 ₁ of the dispensing head 10, comprises the outlet 24.

Output 24 leads to the outside of device 100.

The outlet 24 is located at the end of the dispensing head 10, in particular in the upper part 10 ₁ of the dispensing head 10. The outlet 24 is positioned on the left side of the dispensing head 10 with respect to the axis AT.

Contact surface 26 surrounds or borders outlet 24.

Outlet 24 is arranged to distribute fluid in a direction substantially perpendicular to bearing surface 26.

The outlet 24 is arranged to distribute fluid in a direction that is substantially perpendicular and in the opposite direction to the external force 18 acting on the contact surface 26 at the level of the dispensing head 10.

In FIGURES 1 to 4, pouch 2 is attached to reservoir 6. To attach pouch 2 to reservoir 6, device 100 further comprises means 32 for screwing pouch 2 to reservoir 6.

The means for screwing 32 comprise a thread 32.

The bag 2 comprises a tip 34 arranged to sink (i.e. fit) into the reservoir 6. The tip 34 is rigid and preferably made of PP or PE and is preferably at least 8 mm long. Supply port 8 is positioned at the end of tip 34.

In a variant of device 100, the tip 34 is pushed into reservoir 6 so as to fix the bag 2 to the reservoir 6.

On the device 100, the reservoir 6 comprises a cap 36 arranged to block the flow of fluid contained in the reservoir 6 to the pocket 2 as long as the tip 34 of the pocket 2 is not pushed into the reservoir 6. Thus, before positioning the pocket 2 above the reservoir 6, the reservoir 6 is hermetic because the cap 36 is not yet pierced.

The tip 34 is arranged to pierce the cover 36. Thus, to fix the pocket 2 to the reservoir 6, it is necessary to push the tip 34 into the reservoir 6 and then screw the means 32 to screw the pocket 2 to the reservoir 6.

The device 100 comprises a supply valve 38 positioned at the level of the supply port 8, more precisely inside the tip 34 in a supply seat 62, and 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.

In FIGURES 1 to 3, reservoir 6 is arranged to reduce its interior volume after each opening state of supply valve 38. In FIGURES 1 to 4, reservoir part 6 further comprises the valve for supply 38 housed at the level of the supply seat 62, said valve 38 being located at the junction between the interior volume of the bag 2 and an interior volume of the reservoir 6.

Supply valve 38 of device 100 is shown in FIGURE 6.

Supply valve 38 comprises two parts. An upper part, formed by a cylinder and a lower part. The lower part of the supply valve 38 includes a pusher 38 ₁ . Supply valve 38 is typically TPO.

The supply valve 38 is located inside the pocket 2 and is arranged for:

• in its closed state, press against the supply port 8, and
• in its open state, move away from the feed port 8.

At rest, that is to say without the device 100 undergoing stress or external force 18, the supply valve 38 is in its closed state.

The supply valve 38 includes a second anti-drip device located in the supply seat 62, inside the nozzle 34. This second anti-drip device is arranged to limit the quantity of product remaining in the supply orifice 8. The second anti-drip device can be confused with the supply valve 38. The supply valve 38 is arranged to be closed if a force is applied to the bag 2.

Preferably, even if it is less essential, at rest, that is to say without the device 100 undergoing stress or external force 18, the valve 38 is also in its closed state.

When pocket 2 is filled with fluid to be dispensed and the volume of pocket 2 decreases (for example due to an increase and/or an application of the external force 18 on the contact surface 26):

• the dispensing valve 28 (more precisely the membrane 28 ₄ ) moves away from the dispensing seat 105 and the dispensing valve 28 is in its open state; fluid exits through outlet 24 and pocket 2 empties at least partially,
• the supply valve 38 is pressed against the internal wall of the endpiece 34 of the pocket 2 (in particular the valve 38 ₁ of the valve 38) and blocks the passage of fluid coming from the supply orifice 8. The valve supply 38 is in its closed state; fluid cannot (or almost cannot) escape from pocket 2 to reservoir 6.

When pocket 2 is filled with fluid to be dispensed and the volume of pocket 2 increases (for example by releasing the external force 18 on the contact surface 26):

• the dispensing valve 28 (more precisely the membrane 28 ₄ ) presses against the dispensing seat 105 and the valve 28 is in its closed state; fluid cannot pass from pocket 2 to outlet 24,
• the supply valve 38 is "sucked in" and the valve 38 ₁ of the valve 38 deviates from the internal walls of the tip 34 of the bag 2 facing the supply orifice 8. The valve 38 is in its open state; fluid can pass from reservoir 6 (passing through supply orifice 8) to pocket 2 so as to refill pocket 2.

The tank 6 is equipped with a part 64 comprising a sealing skirt 60 provided with the cap 36, said sealing skirt 60 being located at the junction of the tip 34 of the pocket 2 and the upper envelope of the tank 6.

Part 64 of tank 6 is integral with the inner casing of tank 6. Part 64 of tank 6 is located in particular in the upper part of tank 6, that is to say in a housing of tank 6 located at the junction between the tank 6 and the tip 34 of the bag 2.

The supply orifice 8 is located at the end of the tip 34, that is to say at the junction between the reservoir 6 and the pocket 2.

FIGURE 5 illustrates the sealing skirt 60 comprising the lid 36.

The sealing skirt 60 is typically in PP and the cover 36 in PP. The lid 36 is made of the same material as the sealing skirt 60. There is continuity of material between the sealing skirt 60 and the lid 36. Thus, the sealing skirt 60 and the lid 36 form a single piece.

Reservoir 6 is preferably made of polyolefin and is produced by blow molding. FIGURES 1 and 2 typically show two configurations of device 100 arranged to dispense fluid.

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

The plane of the junction between the upper 10 ₁ and lower 10 ₂ head and the plane in which the dispensing orifice 22 is located are parallel.

In FIGURES 1 to 3, the dispensing head 10 extends mainly longitudinally along the axis A.

Unless otherwise stated, throughout this description, the A axis will be defined by default as being the A axis in the stable position 12.

This axis A passes through the center of gravity of the distribution orifice 22 and the central axis of the distribution channel 20.

The central axis of the distribution channel 20 passes through the center of gravity of the junction between the upper 10 ₁ and lower 10 ₂ head.

In FIGURE 1, no external force is applied at the level of the contact surface 26. The dispensing head 10 is therefore in a stable position 12. Thus, the device 100 is said to be in a stable position 12 when the plane containing the edge 66 of pocket 2 and the plane containing dispensing orifice 22 are parallel. In this case, axis A perpendicularly intersects stop 66 of pocket 2, in particular at its barycentre.

In FIGURE 2, the external force 18 is exerted at the level of the contact surface 26. The dispensing head 10 is therefore in an inclined position 14. The plane containing the edge 66 of the bag 2 and the plane containing the orifice of distribution 22 are no longer parallel. Axis A passes through the center of gravity of edge 66 but does not intersect it perpendicularly.

The dispensing head 10 tilts according to the angle of inclination 16. The angle of inclination 16 is defined, in FIGURE 2, by the angle between (for example at the level of the intersection on the edge 66 ) of :

- the axis A or the longitudinal direction of the head 10 in the stable position 12 of the dispensing head 10, with

- the axis A or the longitudinal direction of the head 10 in the position of inclination 14 of the dispensing head 10, that is to say typically when the dispensing orifice 22 is no longer parallel to the stop 66 from pocket 2.

This angle 16 is the same between:

• the direction connecting the dispensing orifice 22 to the outlet 24 and/or to the surface 26 in the stable position 12 of the dispensing head 10, and
• the direction connecting the dispensing orifice 22 to the outlet 24 and/or to the surface 26 in the tilting position 14 of the dispensing head 10.

In FIGURE 2, the dispensing head 10 is typically tilted to a tilt position 14 of 25 degrees (25°). However, the dispensing head 10 can tilt in other tilting positions 14. In the case considered, the dispensing head 10 tilts on the right side with respect to the axis A of the dispensing head 10 .

Indeed, the dispensing head 10, apart from its stable position 12 and according to different possible inclined positions 14, is arranged to reach a position of maximum inclination when the angle of inclination 16 is inclined by at least 20 °, preferably 30 degrees, or even at least 45 degrees, relative to said stable position 12, said position of maximum inclination being arranged to reduce the interior volume of the pocket 2 typically by at least 20%. Thus, the dispensing head 10 cannot tilt beyond the position of maximum inclination, even if the external force 18 is greater than the threshold force. If the device 100 is in its position of maximum inclination and an external force 18 greater than the threshold force is applied at the level of the contact surface 26, then such an external force 18 could damage the device 100.

FIGURES 7-12 illustrate another embodiment of a device 700 for dispensing fluid. Device 700 includes all the elements of device 100. Thus, only the differences with device 100 will be described. In this part, it is considered that the axis A is defined by the axis on which the distribution head 10 is centered.

The dispensing valve 28 of the device 700 comprises all the elements of the dispensing valve 28 of the device 100 except the part 28 ₁ , tapered end 28 ₁ , of the dispensing valve 28 of the device 100.

In the device 700, the deformable wall 4 of the pocket 2 comprises a bellows 44.

The gusset 44 is a gusset 44 comprising a pleat. In a variant embodiment, the device 700 can comprise at least one fold.

The bellows 44 is cylindrical in shape and is centred, when the device 700 is in stable position 12, on an axis collinear with the axis A. In this case, the bellows 44 therefore comprises on its outer wall corrugations propagating in a parallel to the axis A, that is to say parallel to the direction of elongation of the dispensing head 10.

In FIGURE 7, device 700 is in stable position 12.

The two parts 4 ₁ and 4 ₂ of the deformable wall 4 are identical. The device 700 can therefore tilt according to different positions of inclination 14 on both sides of the axis of elongation of the dispensing head 10 or even in all the directions of inclination of the dispensing head 10 around the A axis.

The bellows 44 is also arranged to be compressed when an external force 18, comprising at least one component parallel to the axis of the cylinder of the bellows 44 and oriented in the direction of the reservoir 6, is applied at the level of the dispensing head 10 .

Bellows 44 is in TPO

The device 700 comprises blocking means 50 arranged to limit and/or prevent stretching of one of the sides of the bellows 44 during any inclined position of the dispensing head 10. Indeed, the bellows 44 of the bag 2 is included in a rigid casing 50 serving as locking means 50. Thus, when the bellows 44 tilts to the left side in FIG. 8, the part ₄₂ of the deformable wall of the bellows 44 collapses and folds back on it -even while the part 4 ₁ stretches slightly and will come into abutment against the rigid casing 50. The extension of the part 4 ₁ of the deformable wall 4 is therefore blocked by the rigid casing 50.

The blocking means 50 are also arranged to limit and/or prevent stretching of the bellows 44 when the bellows 44 is subjected to any stretching force.

Thus, the distance separating the two ends of the part 4 ₁ from the deformable wall 4, in the inclined position 14, is equal to or only very slightly greater than the distance separating the two ends of the part 4 ₁ from the deformable wall 4 of steady position 12.

The distance separating the two ends of the part ₄₂ from the deformable wall 4, in the inclined position 14, is less than the distance separating the two ends of the part ₄₂ from the deformable wall 4 from the stable position 12.

The distance separating the two ends of the part 4 ₁ from the deformable wall 4, in the inclined position, is greater than or equal to the distance separating the two ends of the part 4 ₂ of the deformable wall 4 from the inclined position 14.

In the case where the bellows 44 is compressed, then the distance separating the two ends of the parts 4 ₁ and 4 ₂ of the deformable wall 4 are less than the distance separating the two ends of the parts 4 ₁ and 4 ₂ of the deformable wall 4 when no force is exerted on the dispensing head 10.

In FIGURE 8, the dispensing head 10 is tilted to the left side of the elongation axis of the dispensing head 10.

There is therefore an asymmetry between the two parts ₄₁ and ₄₂ of the deformable wall 4 of the bellows 44 in position 14.

Pocket 2 of device 700 comprises two ends 34 ₁ and 34 ₂ positioned at the two ends, upper and lower, of pocket 2.

The upper end of pocket 2 comprises a holding surface 68.

End pieces 34 ₁ and 34 ₂ are cylindrical in shape.

Pouch 2 includes means 32 for screwing pouch 2 to dispensing head 10.

The means 32 for screwing include a thread 32.

The tip 34 ₁ is positioned on the upper end of the pocket 2, that is to say on the holding surface 68, and is arranged to be screwed inside the distribution channel 20 in the head of cast 10.

The thread 32 is positioned on the outer wall of the end piece 34 ₁ . Thus, the tip 34 ₁ to the dispensing head 10 is screwed inside the dispensing head 10.

The tip 34 ₂ is positioned on the lower end of the pocket 2, that is to say on a surface of the pocket 2 opposite the holding surface 68. The tip 34 ₂ is arranged to fit in and/or be attached to the tank 6.

When the device 700 is not subjected to an external force 18, for example in FIGURE 7, the support surface 68 is a flat surface.

The device 700 is arranged so that the upper end of the pocket 2, in particular the holding surface 68, deforms as little as possible to maximize the reduction in volume of the pocket 2. This can happen by:

-a support surface 68 sufficiently rigid so that its deformation, caused by the inclination of the pocket 2, at the level of the attachment of the tip 34 ₁ , only includes deformation heights less than or equal to 2 or 3 mm per relative to the flat surface of the support surface 68 (i.e. when no force is applied at the level of the contact surface 26), and/or

- A consolidation of the upper end of the pocket 68 (with the walls of the tip 34 ₁ ). Said consolidation can typically be carried out at the level of a plate 52 (or pusher 52) integral with the dispensing head 10 and preferably being fixed by interlocking the pocket 2 on the tip 34 ₁ at the level of the plate 52 (or pusher 52) of the dispensing head 10, and/or

- the end piece 34 ₁ which comprises an outer diameter almost as large as the diameter of the bellows 44, for example being at least two thirds of the diameter of the bellows 44.

The dispensing head 10 is a single piece which is broken down into:

• a middle part (preferably cylindrical), centered on the axis A, and in which the distribution channel 20 is arranged at its center,
• an applicator, carried by the middle part, and comprising at least one curved shape (i.e. a curve) comprising the contact surface 26 and/or the outlet 24. For the device 700, the curved shape is a sphere and extends over the entire surface of the applicator;
• a part, in the form of a plate 52, carrying the middle part and positioned at the end of the dispensing head 10, that is to say the end of the dispensing head 10 facing the holding surface 68 of the pocket 2.

The part in the form of a plate 52 and facing the holding surface 68 includes the pusher 52.

The dispensing channel 20 crosses all the parts of the dispensing head 10 and is centered on the central axis of the dispensing head 10, i.e. on the axis A.

The applicator, that is to say the spherical part of the dispensing head 10, is located at the upper end of the dispensing head 10 and thus includes the outlet 24 through which the fluid of the device 700 s escape.

Outlet 24 of device 700 is arranged to dispense fluid in the direction of elongation of dispensing head 10.

The contact surface 26 of the dispensing head 10, precisely of the applicator, extends over the entire perimeter of the curved shape of the applicator and therefore over the entire spherical part of the dispensing head 10. In this way , the device 700 comprises an extended contact surface 26 which makes it possible to exert an external force 18 at a multitude of localized positions on the applicator of the dispensing head 10. The device 700 can therefore be adapted to different shapes of application of external force 18.

In the case of FIGURE 7, no external force 18 is applied to the contact surface 26.

The longitudinal direction of the dispensing head is defined by axis A, i.e. the axis on which the middle part of the dispensing head 10 is centered.

The dispensing head 10 and the reservoir 6 are aligned axially in the longitudinal direction when the head 10 is in its stable position 12, that is to say there is coaxiality of the dispensing head 10 with tank 6.

The dispensing head 10 and the pocket 2 are also aligned axially in the longitudinal direction when the head 10 is in its stable position 12, that is to say that there is coaxiality of the dispensing head 10 with pocket 2.

The dispensing head 10 is arranged to tilt on the opposite side on which the external force 18 is exerted at the level of the contact surface 26.

The arrangement of the device 700, that is to say the use of the bellows 44 and of a spherical contact surface 26, causes the dispensing head 10 and the bag 2 to follow the same tilting movement when the external force 18 is applied to device 700 at contact surface 26.

In FIGURE 8, an external force 18 is exerted on the right side of the contact surface 26. The dispensing head 10 and the pocket 2 are inclined to the left side of the elongation axis of the dispensing head 10, c i.e. on the left side of the A axis.

The dispensing head 10 is equipped with the pusher 52 arranged for:

• press against the holding surface 68 of the pocket 2, preferably a holding surface 68 of the bellows 44, and
• maintain fixed said holding surface 68 relative to the dispensing head 10.

In the case of FIGURE 8, when the dispensing head 10 is tilted, the blocking means 50 press on the pusher 52 and the pusher 52 itself presses on the holding surface 68 of the bag 2. In FIGURES 7 and 8, the holding surface 68 and the pusher 52 are held together by tightening the locking means 50 on a box 70 containing the reservoir 6.

The housing 70 can be made of metal and/or of polymer.

The locking means 50, that is to say the rigid box 50, are arranged to limit and/or prevent stretching of one of the sides of the pocket 2, and thus limiting the inclination of the dispensing head 10 .

The locking means 50 is cylindrical in shape.

The means 50 includes a hole for inserting the head 10.

The dispensing head 10 is arranged in the orifice of the blocking means 50. Thus the orifice of the blocking means 50 surrounds the middle part of the dispensing head 10. The orifice of the blocking means 50 therefore comprises an internal diameter larger than the middle part of the dispensing head 10 so as to allow the inclination of the dispensing head 10 while limiting it.

Thus, the internal and/or external diameter of the blocking means 50 can be chosen so as to define the maximum angle of inclination.

The blocking means 50 comprise, on an outer wall, means for screwing 102 the blocking means 50 to the rigid casing 70 comprising the reservoir 6. The rigid casing 70 is arranged to contain the entire volume of the reservoir 6.

Tank 6 is equipped with a part comprising:

• the supply valve 38 housed at a supply seat, said valve 38 being located at the junction between the interior volume of the pocket 2 and an interior volume of the reservoir 6, and
• a cap 40 provided with a cover 42, said cap 40 being located at the junction between the interior volume of the bag 2 and the distribution channel 20, and arranged to fit into the endpiece 34 ₁ (in the interior part of the end piece 34 ₁ ) and
• a connecting element 46 connecting the supply valve 38 and the cap 40, said connecting element 46 being arranged to deform during a deformation of the bag 2.

The part of the reservoir 6 comprising the cap 40 further comprises the supply valve 38 housed at the level of the supply seat 62, said valve 38 being located at the junction between the interior volume of the pocket 2 and an interior volume of the reservoir 6

The stopper 40 further comprises insertion means arranged to push the supply valve 38 into the end piece 34 ₂ , more precisely into the inner part of the end piece 34 ₂ of the bag 2.

These insertion means are connected to the supply valve so as to insert it into the pocket forming an element provided, preferably at the end opposite the supply valve, with means for taking it and fixing it more precisely by fitting into the pocket on the side of the upper 34 ₁ and/or lower 34 ₂ end piece

The supply valve is housed at the lower nozzle.

The lid of the stopper is housed in the upper mouthpiece.

The connecting element connects the supply valve to the insertion means.

In the case of FIGURES 7, 8 and 9, the supply valve 38, the cap 40 provided with the cap 42 and the connecting element 46 form a single and unique connecting piece 701.

Thus, with regard to the end pieces 34 ₁ and 34 ₂ of pocket 2:

• the tip 34 ₁ of the bag 2 comprises a hollow internal diameter (and of cylindrical shape), arranged so as to accommodate the stopper 40 of the connecting piece 701, and
• the tip 34 ₂ of the pocket 2 comprises a hollow internal diameter (and of cylindrical shape), arranged so as to accommodate the supply valve 38 of the connecting piece 701 (and so as to fit on the upper end tank 6)

In the case of FIGURES 7 and 8, the connecting element 46 is flexible and is located in the interior volume of the pocket 2.

The device 700 further comprises a perforator 48, located in the dispensing head 10, and arranged to perforate the cover 42 of the stopper 40 housed in the dispensing seat when the device 700 is fitted. Mainly, the perforator 48 thus comprises one end provided with an acute angle, oriented towards the cover 42 of the stopper 40 and arranged to pierce the cover 48 of the stopper 40.

In the case of FIGURES 7 to 9, the connecting element 46 of the connecting piece 701 is flexible or breakable after the assembly of the pocket 2 on the reservoir 6.

In the considered case of the device 700, the connecting element 46 is flexible. In this way, each time the dispensing head 10 is tilted, the connecting element 46 follows the movement of the bag 2 and does not break. Pocket 2 is no longer aligned with the central axis of tank 6 and axis A.

Reservoir 6 of device 700 is formed from a single and unique piece.

Reservoir 6 and pocket 2 of device 700 are formed from a single and unique piece.

The tank 6 of the device 700 comprises a bellows 6 ₁ of the tank 6. Thus, the tank 6 of the device 700 comprises an outer wall comprising two parts:

• a first part 6 ₁ comprising the bellows 6 ₁ of the tank 6,
• a second part 6 ₂ positioned below the bellows 6 ₁ of the tank 6.

The bellows 6 ₁ of the reservoir 6 (preferably cylindrical) is centered on the axis A when the head is in a stable position 12 (FIGURE 7). The bellows 6 ₁ of the reservoir 6 therefore comprises on its outer wall parallel undulations 6 ₁ succeeding each other parallel to the axis A, that is to say parallel to the direction of elongation of the dispensing head 10 when the head dispenser 10 is in a stable position.

The tank 6, more precisely the bellows 6 ₁ of the tank 6, is arranged to compress in a direction parallel to the axis A and in a direction starting from the tank 6 towards the pocket 2.

The tank 6, more precisely the part 6 ₂ of the tank 6, is arranged to compress towards the inside of the tank 6, preferably in a direction orthogonal to the axis A and in a direction 90 starting from the outer wall of the tank 6 towards the axis of tank 6, i.e. axis A.

For this the tank 6 comprises on its outer wall grooves 92 or stiffnesses 92, in particular on the part 6 ₂ of the tank 6, arranged to approach towards the inside of the tank 6. Thus the grooves 92 are arranged to compress the tank 6 in the direction orthogonal to the axis A and in the direction 90, with each decrease in the volume of fluid contained in the reservoir 6.

The grooves 92 of the tank are located below the bellows 6 ₁ of the tank 6 more precisely in the part 6 ₂ of the tank 6.

The tank 6, more precisely the part 6 ₂ of the tank 6, is arranged to compress on returning inside the tank 6 (more exactly inside the bellows 6 ₁ ), preferably in a direction parallel to the axis A as shown in figure 11.

In FIGURES 11 and 10, device 700 is in stable position 12. These figures do not show locking means 50, housing 70 of reservoir 6 and dispensing head 10.

The bag 2 and the reservoir 6 of the device 700 are integral with each other so as to form a single and unique piece. , Said part is preferably obtained by blow molding.

More specifically, FIGURES 10 and 11 illustrate the device 700 comprising the bag 2 and the reservoir 6 blown after complete use or not of the device 700.

Indeed, in FIGURE 10, we see that:

• the upper part 6 ₁ (ie the bellows 6 ₁ of the reservoir 6), comprising undulations parallel to the central axis of the device 1000, is compressed. In Figure 10, the spacing between the corrugations of the tank 6 has decreased compared to FIGURES 7, 8 and 9. Thus, the length of the bellows 6 ₁ of the tank 6 in FIGURE 10 is less than the length of the bellows 6 ₁ of the tank 6 of FIGURES 7, 8 and 9. The bellows 6 ₁ of the reservoir 6 is therefore compressed.
• the lower part 6 ₂ comprises a smooth wall but structured by stiffeners 92, also called grooves 92, arranged so that this part 6 ₂ of the tank 6 deforms radially in order to avoid folds, for example pinching at the level of the wall of the tank 6. The shape of the stiffeners 92 in longitudinal "embossing" is illustrated by the cross section of the part 6 ₂ of the tank 6 in FIGURE 12.

Thus, FIGURE 10 illustrates, after several dispensations of fluid, a reduced form of the reservoir 6. The use of the device 700 is not complete, that is to say there remains fluid contained in the pocket 2 and reservoir 6 of device 700.

In FIGURE 11, the use of the device 700 is complete, that is to say that there is no more fluid contained in the reservoir 6 of the device 700. A certain quantity may remain in the pocket 2.

In Figure 11, the spacing between the corrugations of the tank 6 is the same as the spacing of the corrugations of the tank 6 of FIGURE 10. However, the part 6 ₂ of the tank 6 has compressed in the direction of the axis A .

In the case of the device 700, if the tank 6, in particular the part 6 ₁ of the tank 6 comprises an outside diameter greater than the outside diameter of the part 6 ₂ of the tank 6, then part 6 ₂ is arranged to enter the tank interior 6.

Thus, after each inclination of the dispensing head 10, the interior volume of the reservoir 6 decreases, preferably compresses, so that the lower part 6 ₂ of the reservoir 6 approaches the upper part 6 ₁ of the reservoir 6 and/or compresses radially on the part 6 ₂ .

Indeed, in FIGURE 11, the lower part 6 ₂ of the tank 6 is compressed and has folded inside the upper part 6 ₁ of the tank 6, this in order to optimize emptying of fluid contained in the tank 6 .

FIGURES 13-16 illustrate another embodiment of a device 1300 for dispensing fluid. Only the differences with device 700 will be described.

Dispensing valve 28 of device 1300 is identical to dispensing valve of device 700.

Device 1300 includes:

• the tank 6 positioned in the rigid box 70,
• the bag 2 carried by the tank 6,
• the dispensing head 10 carried by the bag 2,
• a cover 94 being in the case of FIGURES 13 to 16, a rigid cover 94 positioned above the pocket 2,
• a dispensing button 72 forming part of the dispensing head 10,
• a cap 74 covering the dispensing button 72, the cap 94, the dispensing head 10, the pocket 2 and the reservoir 6.

The cap 74 is arranged to fit onto the rigid case 70 when the device 1300 is no longer used to dispense fluid. The entire interior volume of tank 6 is included in rigid casing 70.

The rigid box 70 includes an inner wall 70 ₁ .

The rigid case 70 can be made of metal and/or glass, and/or wood.

The device 1300 (more precisely the head 10) includes a position of maximum inclination.

The device 1300 comprises the cover 94 arranged to limit and/or prevent the inclination of the dispensing head 10 beyond the position of maximum inclination. Thus the cover 94 blocks the inclination of the dispensing head 10 when the dispensing head has reached its position of maximum inclination.

The cap 94 comprises means for screwing 104 the cap 94 to the rigid casing 70, thus making it possible to keep the dispensing head 10, the bag 2 and the reservoir fixed to the rigid casing 70.

The cover 94 comprises, as for the device 700, an orifice and positioned on the central axis of the cover 94, said axis being collinear with the axis A. The orifice of the cover 94 is arranged to pass the dispensing head 10 through the inside of the orifice of the cover 94. The diameter of the orifice of the cover 94 is therefore greater than the diameter of the dispensing head 10. The position of maximum inclination of the dispensing head 10 is given by the diameter of the hood hole. In a variant of device 1300, the diameter of the orifice of the cover 94 is arranged so as not to block the inclination of the dispensing head 10.

The dispensing button 72, 10 ₁ of the head 10 comprises an outer wall and an inner wall.

The dispensing head 10, on its outer wall, comprises means 106 for screwing the part 10 ₂ of the dispensing head 10 comprising the channel 20 to the dispensing knob 72, typically to the inner wall of the dispensing knob 72.

The dispensing button 72 further comprises an orifice 73 positioned on the upper wall of the dispensing button 72 and passing through the outer and inner wall of the dispensing button 72. The orifice 73 is arranged so as to be centered on the outlet 24 of the dispensing head 10 when the device 1300 is mounted, that is to say when the dispensing button 72, the cover 94 the dispensing head 10, the pocket 2, the reservoir 6 and the rigid box 70 are assembled together . Thus, when the part 10 ₂ is fixed to the dispensing button 72, fluid can escape through the outlet 24 passing through the orifice 73 of the dispensing button 72 of the head 10.

As the dispensing button 72 is fixed by the means for screwing 106, the outer wall of the dispensing button 72 of the head comprises the contact surface 26.

The dispensing button 72, being fixed to the part 10 ₂ , it follows the positions, that is to say the stable position 12 and/or the inclined positions 14, of the assembly of the dispensing head 10.

Reservoir 6 comprises a cap 96 arranged to at least partially delimit reservoir 6. Cap 96 comprises two parts:

• a platform 98, and
• a trunk 76 housed in the tank 6 and carrying the platform 98 of the cap 96.

The platform 98 and the trunk 76 are integral.

The trunk 76 is cylindrical and is centered on the central axis of the distribution channel 20, said central axis being collinear with the axis A. Thus, the trunk 76 and the distribution channel 20 are coaxial in the position 12. The trunk 76 is also centered on the central axis of the deformable envelope 56 of the reservoir 6.

The platform 98 of the cap 96 comprises a flat rigid wall having at its ends two corner edges 98 ₁ oriented towards the inside of the tank 6.

Reservoir 6 comprises deformable casing 56 delimiting at least part of the interior volume of reservoir 6, said deformable casing 56 comprising successive undulations 56 ₂ radially around axis A.

The deformable envelope 56 of the tank 6 thus comprises three parts:

• an upper part 56 ₁ comprising edges, preferably smooth, and running along the inner wall 70 ₁ of the rigid box 70,
• a lower part 56 ₂ comprising radially successive corrugations 56 ₂ ,
• a lower part 56 ₃ bearing the undulations 56 ₂ and comprising a filling orifice 82.

The lower part 56 ₃ is a rigid wall, that is to say more rigid than the lower part 56 ₂ comprising the undulations 56 ₂ .

The filling orifice 82 comprises a central axis centered on the central axis of the reservoir 6 (i.e. on the axis A). Thus, the filling orifice 82 and the reservoir 6 are coaxial and the filling orifice 82 and the trunk 76 of the cap 96 of the reservoir 6 are coaxial.

The filling orifice 82 is circular in shape and has a diameter equivalent to the external diameter of the trunk 76.

The filling orifice 82 is arranged to fit together and or embed the trunk 76 of the cap 96 of the tank 6 during the assembly of the device 1300, more precisely during the assembly of the tank 6. In this way, the trunk 76 is arranged to imprison a air bubble (not shown) when mounting the trunk 76 in the filling orifice 82 after filling the reservoir 6 with the fluid, said air bubble being trapped in the trunk 76. This prevents this bubble from rising air in tank 6 then bag 2.

The part 56 ₃ of the reservoir 6, comprising the filling orifice 82, comprises hermetic closure means 82 ₁ . The hermetic closure means 82 ₁ comprise a sealing skirt 82 ₁ .

The filling orifice 82 is arranged to be closed by the cap 96 of the tank 6, in particular by the trunk 76. The part 56 ₃ of the deformable envelope 56 of the tank 6 is arranged to be separated from the cap 94, in particular from the trunk 76, for example, with suction cups during a filling phase of the device 1300.

The deformable wall 56 of the tank is fixed or welded to the cover 94 of the tank 6.

The corner edges 98 ₁ of the platform 98 of the reservoir 6 are arranged to hold the deformable wall 56 of the reservoir 6. In particular, the corner edges 98 ₁ of the platform 98 of the reservoir 6 press the upper end of the wall 56 against the inner wall 70 ₁ of the rigid case 70.

The deformable envelope 56 is arranged to fold back towards the platform 98 each time the volume of the deformable envelope 56 decreases.

The deformable envelope 56 is arranged to fold around the trunk 76 each time the volume of the deformable envelope 56 decreases.

Indeed, in FIGURES 13 and 14, device 1300 is completely filled. Thus, the reservoir 6, containing all the fluid available from the device 1300, therefore comprises its maximum interior volume. In this case, the successive undulations 56 ₂ of the deformable envelope 56 of the reservoir 6 are radial with respect to the central axis of the trunk 76, i.e. around the axis A.

In FIGURE 15, almost all the fluid contained in the deformable envelope 56 of the reservoir 6 has been dispensed. The deformable envelope 56 has folded towards the platform 98. Thus, the undulations 56 ₂ of the deformable envelope 56, initially radial around the axis of the trunk 76, have moved towards the trunk 76 and thus form undulations 56 ₂ .

The smooth edges 56 ₁ of the deformable casing 56, initially pressed against the inner wall 70 ₁ of the rigid casing 70 are arranged to approach the cap 96 of the reservoir 6, in particular the platform 98, each time the volume of the fluid decreases. contained in tank 6.

Such a configuration makes it possible to consume the volume of fluid contained in the reservoir 6 as much as possible and to optimize the return of fluid:

-by increasing the surface of the deformable wall 56 of the tank 6, in particular by the undulations 56 ₂ of the deformable wall 56, and

- by arranging the deformable wall 56 so that it matches the rigid shapes of the tank as much as possible, in particular the cover 96, each time the volume of the tank envelope 6 decreases.

The device 1300 for dispensing a fluid comprises the pocket 2 having an interior volume arranged to contain the fluid, the interior volume being delimited at least in part by the deformable wall 4.

The pocket 2 is formed by a bottom wall 21 and by the flexible deformable wall 4.

The walls 21 and 4 face each other.

The wall 4 forms a skirt, of concave shape, and has an upper part and a lower part.

The deformable wall 4 (more exactly its lower part) is fixed or welded to the bottom wall 21.

The bottom wall 21 preferably has a flat or substantially flat shape.

The bottom wall 21 is a rigid wall, that is to say more rigid than the wall 4.

The deformable wall 4 is for example a thin wall and the bottom wall 21 is for example a thicker wall than the wall 21.

The walls 21 and 4 are for example made of polypropylene (PP).

The deformable wall 4 is preferably made of PP with a polymer or plastomer additive (such as for example Vistamaxx ^TM 6202), in order to reduce its hardness so that the hardness of the wall 4 is less than 80 Shore D. From then on, excessive finesse and fragilities of the wall 4 are avoided.

Bottom wall 21 is parallel to platform 98. More specifically, bottom wall 21 is attached to platform 98 of cap 94. In an alternative device 1300, bottom wall 21 and platform 98 are one and the same. single piece.

The supply orifice 8 is located at the level of the bottom wall 21 and pierces the bottom wall 21 and the platform 98 so as to connect the tank 6 to the pocket 2.

The deformable wall 4 of the bag 2 comprises areas of weakness 78 and/or joints 78 arranged to allow inclined 14 but stable positions of the dispensing head 10 in the absence of external force 18.

These zones of weakness 78 correspond to a zone 78 where the deformable wall of the pocket 4 is thinner than on the other parts of the deformable wall 4.

When the dispensing head 10 is in the inclined position 14, the zone of weakness 78 of the deformable wall 4 is arranged to press against and/or approach the bottom wall 21 of the pocket 2, thus forming the inclined position 14 preferential (and stable) distribution head 10.

As long as no secondary external force is applied to the contact surface 26, the device 1300 remains and retains this inclined 14 but stable position of the dispensing head 10. However, this secondary external force must be applied on the opposite side on the side on which the external force 18 is exerted in order to position the dispensing head 10 in its inclined position 14.

In all cases, the deformation effort is more difficult at the beginning of the inclination to then arrive more easily or automatically at a preferential position in an angle precise to within 5 degrees, thus allowing a dosage.

Indeed, in FIGURE 15, the external force 18, with respect to the central axis of the dispensing channel 20, is applied on the right side of the dispensing head 10. The dispensing head 10 and the pocket 2 maintain a position inclined 14 but stable on the left. Thus, to return the device 1300 to its initial stable position, that is to say before the exercise of any external force 18 (i.e. when there is coaxiality between the dispensing head 10 and the reservoir 6), the secondary external force must be applied on the left side of the dispensing head 10, i.e. on the side of the tilt position 14.

In one embodiment of a method of mounting the device 1300, illustrated in FIGURE 16, the deformable wall 56 of the reservoir 6, in particular the part 56 ₃ , is pulled outwards so as to release the filling orifice 82 The tank 6 is filled with fluid and it is closed with the cap 96 by pushing the deformable wall 56 of the tank 6 towards the inside of the tank 6, in particular the part 56 ₃ (inverse movement to the previous one). Reservoir 6 includes the sealing skirt which makes it possible to seal part 56 ₃ , ie the bottom of reservoir 6 mounted in cap 96. Deformable wall 56 of reservoir 6 includes the skirt and is of the same material.

The skirt is more rigid than the part 56 ₂ of the deformable wall 56.

In the case of assembly of the device 1300 by blowing, the sealing skirt can be made with a more rigid material because the thicknesses of the deformable wall 56 can be reduced.

In the case of assembly of the 1300 device by injection: work is carried out with deformable wall thicknesses varying between 0.4 mm and 0.5 mm. In this case, a flexible material is used to design the tank, in particular the deformable wall 56. The sealing skirt is designed with a more rigid material than the material used for the deformable wall 56.

In a variant of the devices 100, 700, 1300, there may be two fluids contained in two distinct reservoirs 6. The devices 100, 700, 1300 can have a preferential inclination for each of the fluids, and/or a third inclination arranged to mix the fluids. The third inclination can be, for example, a support force 18 parallel to the direction of elongation of the dispensing head 10, or collinear with the axis A.

FIGURES 17-18 illustrate another embodiment of a device 1700 for dispensing fluid. Only the differences with the 100, 700 and 1300 devices will be described.

Device 1700 for dispensing fluid includes:

• a pocket 2 comprising an interior pocket 2 ₁ and an exterior pocket 2 ₂ , said interior pocket 2 ₁ being located at least partly in the exterior pocket 2 ₂ , said interior and exterior pockets 2 ₁ , 2 ₂ each having an interior volume arranged to contain the fluid, said interior volume of the exterior pocket ₂₂ being delimited at least in part by a movable wall 3, said movable wall 3 being arranged to, under the exertion of a bearing pressure 18, reduce the volume interior of the interior pocket 2 ₁ and the interior volume of the exterior pocket 2 ₂ by deforming and/or by moving,
• an outlet 24 arranged to distribute the fluid.

The interior volume of the interior pocket ₂₁ is delimited at least in part by:

• a piston 5 integral with a junction wall 7 delimiting at least in part the interior volume of the exterior pocket 2 ₂ ,
• a housing 9 of the piston 5 arranged to receive the piston 5 and to guide it during an axial movement 11 of the said piston 5 in the housing.

The device 1700 is arranged to guide the fluid according to a circuit comprising:

• a first course, passing:
  • from the inside of the outer pocket 2 ₂ inside the inner pocket 2 ₁ and/or the piston 5, in the inner pocket 2 ₁ , via at least one connection orifice 13 connecting the interior volume of the outer pocket 2 ₂ inside the inner pocket 2 ₁ and / or the piston 5, and
• a second path, passing from the interior of the interior pocket ₂₁ and/or of the piston 5 to the outlet 24.

The device 1700 also comprises a supply orifice 8 connecting a reservoir 6 to the internal volume of the external pocket 2 ₁ .

From FIGURE 17, the term volume of the pocket 2 means the sum of the interior volume of the interior pocket 2 ₁ and the interior volume of the exterior pocket 2 ₂ .

The pocket 2 is delimited by the mobile wall 3, the junction wall 7 and the bottom wall 21.

The device 1700 further comprises braking means 15 arranged to block an axial movement 11 of the piston 5 in the housing 9 reducing the interior volume of the interior pocket 2 ₁ and of the exterior pocket 2 ₂ when the movable wall 3 is subjected to a support pressure 18 (previously called external force 18) less than a threshold force. The device 1700 comprises “free” movement means in which the internal volume of the pocket 2 decreases without overpressure stress of the liquid during the closing of the connecting orifice 13 (acting as an inlet valve). During this step, the liquid is pushed back into the reservoir 6 through the orifice 8 and the pocket 2 is deformed and the piston 5 rubs against the interior walls of the housing 9 and/or the guide means 65 of the piston 5 in the housing 9, this step allows an acceleration/impulse of the support surface 26. Finally the device 1700 comprises pressure rise means: as soon as the connecting orifice 13 is closed the piston compresses the product in the internal pocket 2 ₁ . Preferably, the bearing force during the pressure rise is less than the threshold force.

The piston 5 and the housing 9 are therefore arranged to allow three phases of movement of the piston 5 in the housing 9 during an exercise of the force 18:

1 a blocking phase for which the piston 5 does not move beyond the means 15 as long as the force 18 is less than the threshold force, then a crossing of the means 15 as soon as the force 18 is greater than this threshold force;

2 a free movement of the piston 5 in the housing 9 once the piston 5 has passed the means 15 (acceleration in space during the closing of the orifice 13, space between the piston and the housing), typically according to a translation of the piston 5 of at least 0.5 mm or even 1 mm in its housing 9, making it possible to give an impulse or acceleration to the threshold force (kinetic energy) and

3 a compression phase, comprising an increase in the pressure in the pocket 2 ₁ after closing the orifice 13

The most important are phases 2 and 3, phase 1 is optional and/or can be found by the restoring forces of deformation or displacement of the external pocket.

The axial movement 11 of piston 5 is along the central axis of piston 5.

The device 1700 comprises a support surface 26, also called contact surface 26, arranged to, under the exercise of the support pressure 18 and through the dispensing head 10, reduce the internal volume of the inner pocket 2 ₁ and outer pocket 2 ₂ by deforming and moving the movable wall 3.

The support surface 26 is integral with the dispensing head 10, and preferably comprises at least part of the dispensing head 10.

Device 1700 includes output 24.

Exit 24 leads to the outside of device 1700.

Outlet 24 is located on dispensing head 10.

Outlet 24 is arranged to dispense fluid in a direction substantially perpendicular to a direction of movement of dispensing head 10.

The dispensing head 10 is arranged to follow a translation movement.

Outlet 24 is arranged to distribute fluid in a direction substantially parallel to an elongation axis of distribution channel 20.

Device 1700 includes a dispensing orifice 22 connecting bag 2 to dispensing channel 20.

Dispensing valve 28 is inside dispensing channel 20 of device 1700.

The distribution channel 20 of the device 1700 comprises an interior volume arranged to only include (or accommodate) the distribution valve 28. Thus only the distribution valve 28 is included in the distribution channel 20.

The device 1700 comprises the distribution valve 28 located in the distribution channel 20, and which in an open state, allows a passage of fluid from the interior of the interior pocket ₂₁ towards the outlet 24 passing through the orifice of distribution 22 and the distribution channel 20 (in particular by the housing 80), and, in a closed state, does not allow a passage of fluid from the inside of the inner pocket 2 ₁ to the outlet 24 passing through the orifice distribution 22 and through the distribution channel 20 (specifically through the housing 80).

The dispensing head 10 is secured to the bottom wall 21 by overmolding or bi-injection of the dispensing head 10 on the bottom wall 21.

Thus, the distribution channel 20 comprises and/or formed by a wall of the distribution head 10 and an upper wall of the bottom wall 21.

The dispensing head 10 includes a spray 10.

Dispensing head 10 is located outside pocket 2.

The dispensing head 10 is arranged to, by exerting a pressure 18 on the support surface 26, move at least according to the translation movement. The translation movement of the dispensing head 10 is in the same direction but in the opposite direction to the axial movement 11 of the piston 5.

Part of the dispensing head 10 is arranged, under the exercise of the bearing pressure 18, to slide at least partly along the outer wall of the outer pocket 2 ₂ so as to move you/or deform the movable wall 3 of the outer pocket 2 ₂ .

The bearing surface 26 is arranged to, under the exertion of pressure, reduce the interior volume of the interior 2 ₁ and exterior 2 ₂ pocket by deforming the mobile wall 3, more precisely by crushing it in the direction of the junction wall 7.

The deformable movable wall 3 has a shape memory. When this wall 3 is not subjected to any external stress, it resumes or remains in its shape illustrated in FIGURE 17, which maximizes the volume of the inner 2 ₁ and outer 2 ₂ pocket.

The support surface 26, accessible from the outside of the device 1700 by a hand of a user, has a minimum surface of 10 mm ²

The housing 9 of the piston 5 is delimited at least in part by the bottom wall 21. A part of the bottom wall 21, that is to say the part of the bottom wall 21 in contact with the distribution channel 20 , is secured to the housing 9 of the piston 5.

The bottom wall 21 at least partially delimits the volume of the outer pocket 2 ₂ .

Junction wall 7 at least partially delimits piston 5.

The bottom wall 21 at least partly delimits the housing 9 of the piston 5.

The gap between the wall 7 and the wall 21 defines the volume of the inner pocket 2 ₁ .

In the device 1700, the braking means 15 are integral with the housing 9 of the piston 5 and preferably include at least one tongue 17 inclined towards the inside of the housing 9.

Device 1700 includes a tab 17.

In the device 1700, the movable wall 3 is separated from the junction wall 7. The junction wall 7 is arranged to delimit the interior volume of the pocket 2 and the interior volume of the reservoir envelope 6.

Junction wall 7 has a substantially planar shape. In the case of the device 1700, the junction wall 7 is rigid, that is to say more rigid than the deformable wall 3 of the pocket 2.

The movable wall 3 is located between the bottom wall 21 and the junction wall 7.

Junction wall 7 has the same rigidity as bottom wall 21.

Junction wall 7 is fixed to movable wall 3 of pocket 2.

The mobile wall 3 is fixed to the bottom wall 21 of the pocket 2.

The deformable wall 3 is flexible.

The movable wall 3 is typically made of TPO.

The piston 5 is delimited in part by the junction wall 7.

The piston 5 is fixed to the junction wall 7 by welding and/or molding

The piston 5 is integral with the flat part of the junction wall 7.

The junction wall 7 is made of PP.

The piston 5 is made of the same material as the junction wall 7. On the device 1700, the piston 5 and the junction wall 7 form a single and unique piece.

Thus the piston 5 is therefore positioned between the flat part of the junction wall 7 and the housing 9 for the piston 5.

Housing 9 for piston 5 is positioned between piston 5 and distribution channel 20.

The piston 5 is hollow and cylindrical and has an outer diameter delimited by the junction wall 7.

The external diameter of the piston 5 includes an increase in its diameter at the end of the piston 5 facing the housing 9 of the piston 5. This arrangement makes it possible to have a sealed linear annular contact during compression phases, that is to i.e. when the dispensing head 10 is driven by the translational movement reducing the volume of the pocket 2. This makes it possible, among other things, to increase the sealing performance of the device 1700. A weak rotational movement (for example of the ball joint type) and optionally complementary to this translation movement.

The device 1700 further comprises a supply orifice 8 connecting the supply channel 78 and/or a reservoir 6 to the volume of the outer pocket 2 ₂ .

The device 1700 comprises the reservoir 6. The reservoir 6 communicates with the outer pocket ₂₂ through the supply orifice 8. The reservoir 6 comprises an interior volume arranged to contain the fluid.

The device 1700 is arranged to guide the fluid along the second path, each time pressing pressure 18 on the mobile wall 3 exceeds the threshold force, and/or, each time the interior volume of the interior pocket ₂₁ decreases and the outer pocket ₂₂ for which the connecting orifice 13 is closed, thus causing the movement of the piston 5 in the housing 9. The movement of the piston 5 in the housing 9 causes a compression of the product present in the volume of the pocket 2 .

The connecting orifice 13 closes after pressing (sufficient) on the movable wall 3, it thus forms the supply valve of the inner pocket 2 ₁ .

The device 1700 is arranged to guide the fluid along the first path:

• after the end of each support pressure 18 greater than the threshold force, that is to say when the movable wall 3 is no longer under the exercise of a support pressure 18 greater than the threshold force, and or
• at each increase in the interior volume of the interior pocket ₂₁ and of the exterior pocket ₂₂ for which the connecting orifice 13 is open, that is to say when the piston 5, located in the housing 9, returns towards and in the outer pocket 2 ₂ .

The connection orifice 13:

- is formed at a junction 19 between one end of piston 5 and one end of housing 9 of piston 5, and/or

- comprises a hole 23 located in the housing 9 of the piston 5.

The connection orifice 13 is arranged for:

- close during a movement of the piston 5 reducing the interior volume of the pocket 2,

- open during a movement of the piston 5 increasing the interior volume of the pocket 2.

FIGURES 19-22 illustrate another embodiment of a device 1900 for dispensing fluid. Only the differences with the 1700 device will be described.

The device 1900 comprises the dispensing head 10 extending longitudinally over a certain length in a longitudinal direction connecting the dispensing orifice 22 to the outlet 24.

The dispensing head 10 is a straight piece extending longitudinally in the longitudinal direction.

The dispensing head 10 includes the dispensing channel 20. The dispensing channel is a cylinder extending longitudinally over the entire length of the dispensing head 10 and in the same longitudinal direction as the dispensing head 10.

The dispensing head 10 is equipped with a collar 45. The collar 45 is arranged to fix the tank 6 in the bottom wall 21.

The axis of the distribution channel 20 is centered on the central axis of the distribution head 10, that is to say that the channel 20 and the head 10 are coaxial.

In FIGURES 19 and 22, the device 1900 comprises the reservoir 6 comprising a deformable envelope 56. The deformable envelope 56 of the reservoir 6 is arranged to delimit the pocket 2.

The device 1900 comprises a dispensing orifice 22 connecting the pocket 2, in particular the inner pocket ₂₁ to the dispensing channel 20.

The braking means 15 are integral with the housing 9 and preferably comprise at least one tongue 17 inclined towards the outside of the piston 5.

The connection orifice 13 includes the hole 23 located in the housing 9 of the piston 5.

The connection orifice 13 is arranged to

- close during a movement of the piston 5 reducing the interior volume of the pocket 2,

- open during a movement of the piston 5 increasing the interior volume of the pocket 2.

The device 1900 further comprises the distribution channel 20 arranged to conduct the fluid coming from the inner pocket ₂₁ to the outlet 24.

The device 1900 comprises the dispensing valve 28 located in the dispensing channel 20 and arranged to conduct the fluid from the inner pocket ₂₁ to the outlet 24.

Device 1900 further includes:

• the distribution valve 28,
• a mixer 25 arranged to receive different separate flows of fluid (coming from bag 2) and mix them in the form of a spray at the outlet 24.

The streams can be from the same fluid and/or from different fluids.

One end or a part (more exactly the part 28 ₃ ) of the dispensing valve 28 is integral with a rod 27 arranged to sink into the mixer 25 so as to form different channels 59 arranged to conduct the different separate flows of fluid to mixer 25.

The distribution valve 28 includes a stiffener 49 arranged to prevent bending or deformation (too great) of the valve 28 during its insertion into the channel 20.

The rod 27 is an element used to produce a spray (i.e. vaporizer).

The mixer 25 comprises three cavities 57 arranged in the distribution channel 20 (housing 80 of valve 28) to converge towards the outlet 24. The outlet 24 is closed by a front face of the rod 27 (forming the cavities 57 of the mixer 25 connected to channels 59). These cavities 57 are fed by the three channels 59 formed by the side walls of the rod 27 and the triangular hole of the dispensing part 25, spaced apart from each other, and arranged to define the three channels 59. In variants, there are at least two cavities 57 and at least two channels 59. Blades are at the bottom of part 25, in order to increase the pressure at the outlet 24 and create a vortex. Thus, these channels 59 are directed towards the same central direction so as to create a vortex. A groove in the inner wall of the channel 20, and which is in the extension of the channels 59, imparts a rotational movement to the fluid circulating therein.

The channels 59, and the cavities 57 (located in the extension of the channels 59), are arranged to create an output vortex 24 comprising the flows coming from the pocket 2.

The mobile wall 3 is a deformable wall.

The mobile wall 3 includes the junction wall 7. More specifically, there is continuity of material between the mobile wall 3 and the junction wall 7. The mobile wall 3 and the junction wall 7 are similar, i.e. i.e. made of the same material.

The walls 3 and 7 are for example made of polypropylene.

The movable wall 3 at least partly delimits the volume of the outer pocket 2 ₂ . The mobile wall 3 forms a dome, that is to say that the mobile wall 3 comprises a part of concave shape with respect to the bottom wall 21

The inner pocket ₂₁ comprises a part delimited by the bottom wall 21. The bottom wall 21 comprises the housing 9 for the piston 5. The housing 9 for the piston 5 is delimited at least in part by the bottom wall 21.

The outer pocket 2 ₂ comprises a part delimited by the bottom wall 21. The bottom wall 21 comprises the supply orifice 8 to connect the pocket 2 to the reservoir 6, more precisely the outer pocket 2 ₂ to the reservoir 6.

The bottom wall 21 preferably comprises a flat or substantially flat shape on which the mobile wall 3 is fixed.

The movable wall 3 is fixed or welded to the bottom wall 21, in particular to a plane of the bottom wall 21.

The bottom wall 21 is a rigid wall, that is to say more rigid than the movable wall 3.

The mobile wall 3 is for example a thin wall and the bottom wall 21 is for example a thicker wall than the mobile wall 3.

The mobile wall 3 is preferably made of PP with a polymer or plastomer additive (such as for example Vistamaxx ^TM 6202), in order to reduce its hardness so that the hardness of the mobile wall 3 is less than 80 Shore D From then on, excessive fineness and fragilities of the mobile wall 3 are avoided.

The pocket 2, more precisely the bottom wall 21, delimits at least one housing 39 arranged to accommodate means 31 for fixing the reservoir 6 to the pocket 2. Thus the reservoir 6 can fit into the bottom wall 21. The Reservoir 6 is held by clamping by dispensing part 10. In another embodiment, not shown, dispensing part 10 comprises an external end piece on which reservoir 6 has just fitted at a neck. This neck is constrained in traction by the tip, optionally an outer ring can be crimped on the outside of the neck by moving along it in order to improve the seal.

Pouch 2 also includes a housing 41 in pouch 2 arranged to mount and/or fit dispensing head 10 to pouch 2, more specifically to bottom wall 21.

The device 1900 comprises the reservoir 6 communicating with the outer pocket ₂₂ via the supply orifice 8, said reservoir 6 comprising an interior volume arranged to contain the fluid, said interior volume being delimited at least in part by the deformable casing 56.

The deformable envelope 56 of the tank is made of TPO or PE or PP.

The deformable envelope 56 comprises a support surface 26 arranged to, from outside the device 1900, receive the support pressure 18, external to the device 1900 and orthogonal to the longitudinal direction of the distribution channel 20.

Thus, at each pressing pressure 18 greater than the threshold force, the piston 5 or part of the piston 5, initially included in the interior volume of the outer pocket 2 ₂ , will move in the housing 9 of the piston 5.

Thus, the tank 6 is arranged to reduce its interior volume after each opening state of the supply valve 38.

The tank 6, in particular the deformable wall 56 of the tank 6, comprises the means 31 for fixing the tank 6 to the pocket 2, precisely to fix the tank 6 to the bottom wall 21, in particular to the bottom wall 21 comprising a part of the inside pocket 2 ₁ .

The means 31 for fixing the pocket 2 to the reservoir 6 are integral with the reservoir 6, in particular with the deformable wall 56 and with the holding surface 33 of the reservoir. The means 31 are thicker than the rest of the deformable wall 56 of the tank 6.

These means 31 for fixing are a rigid part of the deformable wall 56, that is to say more rigid than the other parts of the deformable wall 56 of the tank 6. .

The holding surface 33 is flat and is a rigid part of the deformable wall 56, that is to say more rigid than the other parts of the deformable wall 56 of the reservoir 6.

The means 31 of the deformable wall 56 comprise at least one corner edge 31 fitting into the inner pocket 2 ₁ . In the case of the device 1900, the deformable wall comprises two corner edges 31 to fit the reservoir 6 into the pocket 2, precisely to fix the reservoir 6 to the bottom wall 21, in particular to the bottom wall 21 comprising the inner pocket 2 ₁ .

Thus the collar 45 is arranged to, by exerting mounting pressure (not shown) on the holding surface 53 of the tank 6, fit together and/or fix the corner edges 31 of the tank 6 in the pocket 2.

Device 1900 can be a mono-material refill, typically from the same family as polyolefin compounds.

FIGURE 20 shows an exploded view of the device 1900 not yet comprising a reservoir 6.

The outer pocket 2 ₂ comprises means for fixing the movable wall 3 to the bottom wall 21. The volumes of the outer pocket 2 ₂ and of the inner pocket 2 ₁ are delimited when the movable wall 3 is fixed on the bottom wall 21.

The movable wall 3 comprises at least one pin 35, four on the device 1900, to precisely position and fix the movable wall 3 to the bottom wall 21. The bottom wall comprises at least one hole 37, four in total of FIGURE 20, arranged to accommodate at least one pin 35 of the movable wall 3.

In one embodiment of a method for mounting the device 1900, the dispensing valve 28 is mounted in the dispensing head 10, in particular in the dispensing channel 20. The dispensing head 10 is then fitted into the housing 41 of the pocket 2 (especially in the bottom wall 21 comprising part of the inner pocket 2 ₁ ). The movable wall 3 is then assembled to the bottom wall 21 of the pocket 2 so as to form and/or define the inner 2 ₁ and outer 2 ₂ pocket. The mobile wall 3 must be fixed to the bottom wall 21.

In the case of a method of a device 100 comprising a reservoir 6, the movable wall 3 must be fixed to the bottom wall 21. Thus, the reservoir 6 is clamped between the dispensing head 10, at the level of the collar 45 , and pocket 2.

Note that along the axis of translation of piston 5 in housing 9, starting from wall 3:

• the housing 9 extends beyond the channel of the inner pocket ₂₁ connecting the orifice 13 to the valve 28, and/or
• valve 28 is not located along this axis.

Note that the pocket 2 ₁ comprises:

• a first part inside the pocket 2 ₂ , and
• a second part, forming an angle or bend with respect to the first part, and located under the pocket 2 ₂ .

Referring to Figure 21, valve 28 may be held in channel 10 by rib 67.

FIGURES 23-25 illustrate another embodiment of a device 2300 for dispensing fluid. Only the differences with the 1900 device will be described.

The dispensing head 10 of the 2300 device does not include a collar 45 but retains the same shape and the same direction of elongation.

Thus, the dispensing head 10 is arranged to be nested, that is to say kept fixed, in the housing 41 of the bag 2.

The device 2300 further comprises a cap 74 arranged to be positioned and/or fit onto the dispensing head 10. When the cap 74 is fixed to the dispensing head 10, no fluid can exit through the outlet 24 of the device. 2300. The cap 74 is arranged to be airtight when it is pressed against the outlet 24 for the priming phase during vacuum filling.

The cap 74 is made of plastic.

As in the device 1900, the mobile wall 3 includes the junction wall 7. There is continuity of material between the mobile wall 3 and the junction wall 7.

However, the movable wall 3 is not made of the same material as the junction wall 7.

The movable wall 3 is made of PP, PE or TPO.

The junction wall 7 is made of PP, PE or TPO.

The junction wall 7 is rigid, that is to say more rigid than the movable wall 3.

The movable wall 3 and the deformable wall 56 of the tank 6 are similar, that is to say made of the same material. There is continuity of material between the movable wall 3 and the deformable wall 56. They are formed by a single piece comprising two welding or fixing zones, a welding or fixing zone 431 for welding or fixing the wall 3 on the wall 21 and a welding or fixing zone 432 for welding or fixing the wall 56 to the wall 21 ₁ .

Indeed, the device 2300 comprises a plate 43. The plate 43 is substantially planar. The plate 43 comprises the mobile wall 3, the junction wall with the piston 5 and the deformable wall 56 of the tank 6. The plate 43 therefore comprises parts having different rigidities.

The plate 43 is arranged to be positioned on the bottom wall 21 of the pocket 2.

The plate 43 is arranged to be fixed to the bottom wall 21 of the pocket 2, more precisely on an upper face 21 ₁ of the bottom wall 21.

The upper face 21 ₁ of the bottom wall 21 is substantially planar.

The plate 43 is fitted and/or welded to the bottom wall 21 of the pocket 2.

The volume of the tank 6 is between the bottom wall 21 of the pocket 2 and the deformable envelope 56.

The deformable envelope 56 of the reservoir 6 comprises successive radial undulations 56 ₂ around an axis B.

Axis B is perpendicular to plane 47 of wall 43 and/or 56.

The deformable envelope 56 is substantially contained in a plane 47 around which the undulations 56 ₂ oscillate, the axis B being substantially perpendicular to this plane 47. The plane 47 is substantially parallel to the upper face 21 ₁ of the bottom wall 21 .

Axis B is substantially perpendicular to the direction of elongation of dispensing head 10.

The undulations 56 ₂ have an amplitude of oscillation, preferably constant.

The amplitude of oscillation of the undulations 56 ₂ is between the plane 47 and the upper face 21 ₁ of the bottom wall 21 on which the plate 43 is fixed.

In one embodiment of a method for mounting the device 2300, the dispensing valve 28 is mounted in the dispensing head 10. The dispensing head 10 is then fitted into the housing 41 of the pocket 2 (in particular in the wall bottom 21 comprising part of the inner pocket 2 ₁ ). If the device 2300 is not used, the stopper 74 is positioned on one face of the dispensing head 10 comprising the outlet 24. The plate 43 is then assembled with the bottom wall 21 on its upper face 21 ₁ .

Plate 43 must be attached to bottom wall 21.

The assembly process of the device 2300 is carried out under vacuum and includes vacuum welding.

The vacuum assembly process includes the following successive steps:

• we position at least part of the reservoir 6, at least part of the bag 2, on which are assembled the dispensing valve 28, the dispensing head 10 and the cap 74,
• filling the future interior volume of reservoir 6 (and preferably the future interior volume of bag 2) with the fluid to be dispensed,
• the tank 6 (with the wall 56) and the pocket (with the wall 3) are closed,
• the device according to the invention is placed in a cavity 61,
• an emptying of the air in the cavity 61 to reach a pressure of less than 1 bar,
• bringing the plate 43 closer to the upper face 21 ₁ of the bottom wall 21 of the pocket 2, preferably by reducing the volume of the cavity 61 (preferably obtained by compression of a bellows 63) and
• a welding (preferably not ultrasonic welding means 51, 53), under vacuum, of the plate 43 to the upper face 21 ₁ of the bottom wall 21 of the pocket 2, while continuing the approximation of the plate 43 towards the upper face 21 ₁ of the bottom wall 21 preferably by reducing the volume of the cavity 61 (preferably obtained by compression of a bellows 63 typically by 0.3 to 0.6 mm).

The vacuum assembly method then comprises an overpressure of the cavity 61 comprising the assembled device 2300 greater than 1 bar.

The process of vacuum mounting device 2300 is performed by vacuum mounting device 2500, shown in FIGURE 25.

The vacuum mounting device 2500 comprises a sonotron 51 and a booster 53.

Of course, the invention is not limited to the examples described and many adjustments can be made to these examples.

For example, in all of the embodiments and variants just described:

• the force 18 can be exerted directly by a user or via a button, and/or
• in the case of a minimum reservoir of a piston, the pressure equalization hole has a size of at least 3 mm ² .

For example, in all of the embodiments and variations of Figures 17-25:

• the device may comprise means for pre-guiding the piston 5 in its housing 9, these pre-guiding means typically comprising at least one tongue 17 and/or at least one low wall 65.
  

Claims (16)

Device for dispensing a fluid, comprising:

• a pocket (2) comprising an inner pocket (2 ₁ ) and an outer pocket (2 ₂ ), said inner pocket (2 ₁ ) being located at least partly in the outer pocket (2 ₂ ), said inner and outer pockets ( 2 ₁ , 2 ₂ ) each having an interior volume arranged to contain the fluid, said interior volume of the outer pocket (2 ₂ ) being delimited at least in part by a movable wall (3), said movable wall (3) being arranged for, under the exertion of pressing pressure (18), to reduce the interior volume of the interior pocket (2 ₁ ) and the interior volume of the exterior pocket (2 ₂ ) by deforming and/or by moving ,
• an outlet (24) arranged to distribute the fluid,

characterized in that the interior volume of the interior pocket (2₁) is bounded at least in part by:

• a piston (5) secured to a junction wall (7) at least partially delimiting the interior volume of the exterior pocket (2 ₂ ),
• a housing (9) of the piston (5) arranged to accommodate the piston (5) and to guide it during an axial movement (11) of said piston (5) in the housing,

the device being arranged to guide the fluid along a circuit comprising:

• a first course, passing:
  • from the inside of the outer pocket (2 ₂ ) to the inside of the inner pocket (2 ₁ ) via at least one connecting orifice (13) connecting the inner volume of the outer pocket (2 ₂ ) to the inside of the inside pocket (2 ₁ ), and
• a second path, passing from the inside of the inner pocket (2 ₁ ) to the outlet (24).

Device according to Claim 1, characterized in that it comprises braking means (15) arranged to block an axial movement (11) of the piston (5) in the housing (9) reducing the interior volume of the interior pocket (2 ₁ ) and the outer pocket (2 ₂ ) when the movable wall (3) is subjected to a support pressure (18) below a threshold force. Device according to the preceding claim, characterized in that:

• the braking means (15) are integral with the piston (5) and preferably comprise at least one tongue (17) inclined towards the outside of the piston (5), and/or
• the braking means (15) are integral with the housing (9) of the piston (5) and preferably comprise at least one inclined tab (17) towards the inside of the housing (9).

Device according to any one of the preceding claims, characterized in that the device is arranged to guide the fluid along the second path, at each bearing pressure (18) on the movable wall (3) greater than the threshold force and/ or at each decrease in the interior volume of the interior pocket (2 ₁ ) and of the exterior pocket (2 ₂ ) for which the connecting orifice (13) is closed. Device according to any one of the preceding claims, characterized in that the device is arranged to guide the fluid along the first path, after the end of each pressing pressure (18) greater than the threshold force, and/or at each increase in the interior volume of the interior pocket (2 ₁ ) and of the exterior pocket (2 ₂ ) for which the connection orifice (13) is open. Device according to any one of the preceding claims, characterized in that the connecting orifice (13):
- is formed at a junction (19) between one end of the piston (5) and one end of the housing (9) of the piston (5), and/or
- comprises a hole (23) located in the housing (9) of the piston (5). Device according to any one of the preceding claims, characterized in that the connecting orifice (13) is arranged for:
- close during a movement of the piston (5) reducing the interior volume of the pocket (2),
- open during a movement of the piston (5) increasing the interior volume of the pocket (2). Device according to any one of the preceding claims, characterized in that it further comprises a distribution channel (20) arranged to conduct the fluid coming from the inner pocket (2 ₁ ) towards the outlet (24). Device according to Claim 8, characterized in that the device comprises a dispensing valve (28) located in the dispensing channel (20) and arranged to conduct the fluid from the inner pocket (2 ₁ ) towards the outlet (24). Device according to the preceding claim, characterized in that it further comprises:

• the dispensing valve (28),
• a mixer (25) arranged to receive different separate flows of fluid and mix them in the form of a spray at the outlet (24),

one end of the distribution valve (28) being integral with a rod (27) arranged to sink into the mixer (25) so as to form different channels arranged to lead the different separate flows of fluid to the mixer ( 25). Device according to any one of the preceding claims, characterized in that the movable wall (3) is a deformable wall. Device according to any one of the preceding claims, characterized in that the movable wall (3) comprises the junction wall (7). Device according to any one of Claims 1 to 10, characterized in that the movable wall (3) is separated from the junction wall (7). Device according to the preceding claim, characterized in that the movable wall (3) is rigid. Device according to any one of the preceding claims, characterized in that it comprises a reservoir (6) communicating with the outer pocket (2 ₂ ) via a supply orifice (8), the said reservoir (6) comprising an internal volume arranged to contain the fluid, said interior volume being delimited at least in part by a deformable envelope (56). Device according to the preceding claim, characterized in that the deformable casing (56) of the reservoir (6) comprises successive undulations (56 ₂ ) radial around an axis.