FR3011829A1 - DEVICE FOR DISPENSING FLUID PRODUCT. - Google Patents

Abstract

Fluid dispensing device comprising a reservoir (1) containing fluid, a dispensing head (10) provided with a dispensing orifice (11) of the fluid and a dispensing assembly (20) with manual actuation for dispensing said fluid product, said dispensing assembly (20) being actuated and / or triggered by displacement of said dispensing head (10) relative to said reservoir (1), said device comprising a cap (30) removably assembled on said head dispensing device (10), said cover (30) having at least one projection (35) radially inwardly adapted to cooperate, in the assembled position of the cover (30), with a locking opening (15) of said head of distribution (10), for blocking said dispensing head (10) and preventing its movement.

Description

The present invention relates to a fluid dispenser device. This type of device is well known, particularly for the distribution of pharmaceutical fluid products, cosmetics or the field of perfumery. These devices generally comprise a reservoir containing fluid, a dispensing head provided with a dispensing orifice of the fluid product and a dispensing assembly with manual actuation for dispensing said fluid product, said dispensing assembly being actuated by displacement of said head of distribution relative to the tank or vice versa. A problem with these devices is their security during storage, when not in use. Thus, for example, a fall of the device may cause undesired partial or total actuation of the distribution assembly. This can also occur at the end of assembly and / or filling of the device. In any case, such undesired total or partial actuation can cause significant problems, for example loss of dose, leakage or subsequent dysfunction of the device. These problems are particularly detrimental for dispensing devices of the single-dose or bidose type intended to dispense only one or two doses of fluid, as well as for devices of the autoinjector type. The present invention aims to provide a fluid dispenser device does not have the aforementioned drawbacks. The present invention is intended to provide such a device which avoids any risk of inadvertent actuation, total or partial, in case of fall of said fluid dispensing device. The subject of the present invention is therefore a fluid dispensing device comprising a reservoir containing fluid, a dispensing head provided with a dispensing orifice for the fluid product and a dispensing assembly with manual actuation for dispensing said fluid product, said dispensing assembly being actuated and / or triggered by displacement of said dispensing head with respect to said reservoir, said device comprising a cap removably assembled on said dispensing head, said cap comprising at least one projection radially projecting inwardly; adapted to cooperate, in the assembled position of the cover, with a blocking opening of said dispensing head, for blocking said dispensing head and prevent its movement.

Advantageously, said at least one projection is formed in a side wall of said cover, in the axial extension of a longitudinal slot, provided in particular to facilitate the molding of said cover. Advantageously, said cover is elastically deformable, and in which a deformation of said cover radially inwards in a radial direction substantially perpendicular to the radial direction of said at least one projection generates a deformation of said cover radially outwardly in the radial direction. said at least one projection for disengaging said at least one projection of said at least one locking aperture.

As a variant, said cover comprises two lateral parts connected to each other by a bridge of approximately central material, defining an upper part and a lower part, and in which a deformation of said upper part of said cover radially inwards in the radial direction of said at least one projection generates a deformation of said lower portion of said cover radially outwardly in the radial direction of said at least one projection to disengage said at least one projection of said at least one locking aperture. Alternatively, said cover is substantially rigid, said cover having a single projection and having on the opposite side to said projection a cutout or a bulge allowing said cover to swing on said dispensing head to disengage said projection of said locking aperture. In a variant, said cover comprises at least one pre-cut zone and / or at least one rupture zone supporting said at least one projection.

As a variant, said cover has a radially flexible projection and whose radially inner face is beveled, so that a rotation of said cover causes disengagement of said projection. Advantageously, said dispensing assembly comprises a piston displaceable in a reservoir for expelling the fluid from said reservoir. These and other features and advantages of the present invention will appear more clearly in the following detailed description, with reference to the accompanying drawings, given by way of non-limiting examples, and in which: FIG. schematic vertical section of a hood according to a first embodiment of the present invention, in the locking position, Figure 2 is a schematic perspective view of the device of Figure 1, Figure 3 is a view similar to that of FIG. 1, taken along a sectional plane substantially perpendicular to that of FIG. 1, in the locked position, FIG. 4 is a view similar to that of FIG. 3, in unlocking position, FIG. 5 is a diagrammatic view. in a vertical section of a second embodiment of the present invention, in the locking position, FIG. 6 is a view similar to that of FIG. 5, in the unlocking position, FIG. In a perspective view of a hood according to the second embodiment of Figures 5 and 6, Figure 8 is a schematic perspective view illustrating a variant of the second embodiment, unlocking position, Figure 9 is a schematic view of In a third embodiment of the present invention, in the locked position, FIG. 10 is a schematic side view of a fourth embodiment of the present invention, in the locked position, FIG. schematic side view of a fifth embodiment of the present invention, in blocking position, Figure 12 is a schematic side view of a sixth embodiment of the present invention, in the locking position, and Figure 13 is a schematic perspective detail view of a portion of the hood of the device of Figure 12. In the present description, the term "fluid product" includes liquid products, pasty or pulv the terms "upper", "lower", "vertical" and "horizontal" refer to the straight position of the device shown in Figures 1, 3 to 6, 8 and 10 to 12. The dispensing device can be of any type, for example a multidose device, that is to say a device comprising a pump or a valve as a dispensing assembly, mounted on a reservoir containing a plurality of doses. The dispensing device may also be an injection device, such as an autoinjector. In the examples shown in the figures, the dispenser is a single dose (or bidose), that is to say that it contains only one (or two) dose (s) of fluid to be dispensed. Of course, these examples are not limiting. In the examples shown in the figures, the dispensing device comprises a reservoir 1 containing one or two dose (s) of fluid to be dispensed. The dispensing device further comprises a dispensing head 10 provided with a dispensing orifice 11 for the fluid product and at least one locking opening 15. The dispensing assembly 20 can be a pump or a metering valve actuated by displacement of said dispensing head 10 relative to the reservoir 1. Alternatively, said dispensing assembly 20 may comprise a piston (not shown) movable in the reservoir 1 to expel the fluid from said reservoir, and a piston rod 2 connected said piston being actuated, said piston being actuated by displacement of said piston rod 2 with respect to said reservoir 1. The dispensing orifice 11 can be formed directly in the dispensing head 10 or at the end of a needle attached to said dispensing head.

According to the invention, the dispensing device comprises a cover 30 removably assembled on said dispensing head 10. Said cover 30 has at least one radially projecting projection 35 inwardly adapted to cooperate, in the assembled position of the cover 30, with a blocking aperture 15 of said dispensing head 10, for blocking said dispensing head 10 and preventing its displacement. It should be noted that in the case of an autoinjector for example, the actuation of the dispensing assembly is not necessarily achieved by the displacement of the dispensing head supporting the needle relative to the reservoir, but by the moving the plunger of the syringe into the reservoir of the syringe by means of a suitable actuating system. This actuation system is generally triggered by the movement of a sleeve around the body and / or around the tank. The present invention can be adapted to such a device by providing a cover provided with a projection, said cover in blocking position preventing movement of said sleeve and therefore the triggering of the actuating system and therefore the actuation of said distribution assembly . Advantageously, said at least one projection 35 is formed in a side wall of said cover 30. Advantageously, said at least one projection 35 is formed in the axial extension of a respective longitudinal slot 36 intended to facilitate the molding of said hood 30. This slot longitudinal 36 advantageously extends above each projection 35 to the upper end wall of the cover 30. Figures 1 to 4 show a first advantageous embodiment. In this variant, said cover 30 is elastically deformable. Deformation of said cover 30 radially inward in a radial direction substantially perpendicular to the radial direction of said at least one projection 35, that is to say a deformation in the direction of the arrows A in FIGS. 1 and 2, generates a deformation of said cover 30 radially outward in the radial direction of said at least one projection 35, that is to say in the direction of the arrows B in FIGS. 3 and 4. This makes it possible to disengage said at least one a projection 35 of said at least one locking aperture 15, which makes it possible to remove said cover 30 in the direction of the arrow C in FIG. 4. Advantageously, in the locked position of FIGS. 1 and 2, the cover 30 can be of circular or slightly oval shape with the small axis of symmetry in the direction of said at least one projection 35, as shown in Figure 2. When the user manually deforms said cover in the direction of the arrows A, i 1 transforms the outer contour of said hood into an oval in which it is the large axis of symmetry extending in the direction of said at least one projection 35, thereby causing disengagement of said projection 35 from said locking aperture 15 FIGS. 5 to 8 show a second advantageous embodiment in which said cover 30 is substantially rigid and comprises a single projection 35. In the variant of FIGS. 5 to 7, said cover 30 has on the opposite side to said projection 35 a cut-out 38 allowing said cover 30 to switch on said dispensing head 10 to disengage said projection 35 of said locking aperture 15. In the variant of Figure 8, the cover 30 has on the opposite side to said projection 35 a bulge 39 for said hood To switch on said dispensing head 10 to disengage said projection 35 from said blocking aperture 15. FIG. embodiment, in which the cover 30 has a pre-cut zone 310 supporting said projection 35. This pre-cut zone may be secured to a ring 315 intended to be pulled by the user in the direction of the arrow D to remove said precut area and therefore, said projection 35 of said cover 30. This implementation therefore advantageously also provides a first-use control. Figure 10 illustrates a fourth embodiment, wherein said cover 30 forms a clip. The cover here comprises two lateral parts 320, 321 connected to each other by a bridge of material 325 approximately central.

This therefore defines an upper portion 330, disposed above the material bridge 325, and a lower portion 340 disposed below the material bridge 325, said lower portion 340 having said at least one projection 35. By pinching said portion upper 330 in the direction of the arrows A, the material bridge 325 acts as a hinge, which causes the spacing of said lower portion 340 in the direction of the arrows B and thus the disengagement of said at least one projection 35.

FIG. 11 illustrates a fifth embodiment, in which the cover 30 has two lateral parts 320, 321 adapted to separate from one another. A projection 35 may be formed on one of these side portions, as illustrated herein, or on both side portions. These two lateral parts are connected to one another by a breaking zone 360 adapted to break. This rupture zone 360 may comprise vertical slots 365 extending through pre-cut zones 366. Each lateral portion 320, 321 comprises a radial tongue 3200, 3210 on which the user can pull in the direction of the arrow E to break the zone. 360 and thus separate the two lateral portions 320, 321 to disengage the projection (s) 35. Alternatively, one can also adapt this embodiment without necessarily providing a separation of the two lateral parts, but only an elastic deformation in which case the vertical slots 365 would not extend through precut areas. Figures 12 and 13 illustrate a sixth embodiment, wherein said cover 30 has a radially flexible projection 35 whose radially inner face 355 is tapered. Figure 13 shows that this bevel is oriented laterally, that is to say in the peripheral direction. To achieve the aforementioned radial flexibility, the projection 35 is integral with the cover 30 only on one side and is separated from the other side by a slot 359. In this embodiment, a rotation of the cover 30 in the direction of the arrow F causes the disengagement of the projection 35. Indeed, the bevelled shape of the inner face 355 of the projection 35 will deform said projection 35 radially outwardly as the hood 30 is rotated.

As can be seen in particular in FIGS. 3 and 5, in the blocking position, the projection 35 extends inside the dispensing head 10 above the upper edge of the tank 1, thereby preventing any relative displacement between the reservoir 1 and the dispensing head 10. Thus, in the locked position, no actuation, even partial, is possible as the protruding projection 35 is in the locked position, including during a fall of the dispensing device. Although the present invention has been described with reference to several embodiments, it is understood that the present invention is not limited by them but on the contrary the person skilled in the art can make any useful modifications without leaving within the scope of the present invention as defined by the appended claims.

Claims (8)

CLAIMS1.- Fluid dispensing device comprising a reservoir (1) containing fluid, a dispensing head (10) provided with a dispensing orifice (11) of the fluid and a dispensing assembly (20) actuated manual for dispensing said fluid product, said dispensing assembly (20) being actuated and / or triggered by displacement of said dispensing head (10) relative to said reservoir (1), characterized in that said device comprises a hood (30) removably assembled on said dispensing head (10), said cover (30) having at least one projection (35) radially inwardly adapted to cooperate, in the assembled position of the cover (30), with a locking opening (15) of said dispensing head (10) for locking said dispensing head (10) and preventing its movement. 2.- Device according to claim 1, wherein said at least one projection (35) is formed in a side wall of said cover (30), in the axial extension of a longitudinal slot (36), provided in particular to facilitate molding said hood (30). 3.- Device according to claim 1 or 2, wherein said cover (30) is elastically deformable, and wherein a deformation of said cover (30) radially inward in a radial direction substantially perpendicular to the radial direction of said at least one projection (35) generates a deformation of said cover (30) radially outwardly in the radial direction of said at least one projection (35) to disengage said at least one projection (35) of said at least one locking aperture (15). 4.- Device according to claim 1 or 2, wherein said cover (30) has two lateral parts connected to each other by a substantially central material bridge, defining an upper part and a lower part, and wherein a deforming said upper portion of said cover (30) radially inwardly in the radial direction of said at least one projection (35) generates a deformation of said lower portion of said cover (30) radially outwardly in the radial direction of said at least one projection (35) for disengaging said at least one projection (35) of said at least one locking aperture (15). 5.- Device according to claim 1 or 2, wherein said cap (30) is substantially rigid, said cap (30) having a single projection (35) and having on the opposite side to said projection (35) a cutout (38) or a bulge (39) enabling said hood to swing over said dispensing head (10) to disengage said projection (35) from said lock aperture (15). 6.- Device according to claim 1 or 2, wherein said cover (30) comprises at least one pre-cut area and / or at least one rupture zone supporting said at least one projection (35). 7.- Device according to claim 1 or 2, wherein said cover (30) comprises a projection (35) radially flexible and whose radially inner face is tapered, so that a rotation of said cover causes the disengagement of said projection ( 35). 8.- Device according to any one of the preceding claims, wherein said dispensing assembly comprises a piston movable in a reservoir for expelling the fluid from said reservoir.