FR3079725A1 - Closure device for a presurface container containing a product, in particular a cosmetic product - Google Patents

Abstract

The pressurized container closure device containing a product comprises a dispensing valve (16) for dispensing the product and a lid (14) defining an opening (34) for access to the dispensing valve. The lid includes a mounting skirt (32) for being screwed to said container and provided with a bore (32a) comprising at least one helical thread (36). The thread is provided with a plurality of thread segments spaced apart from one another in the circumferential direction. The closure device further comprises a locking cap (70) mounted on the cover (14) between an unlocked position, wherein the cap is rotatable relative to said cover (14) and a position engaged with said cover (14). ) in which rotation of said cap (70) causes rotation of the lid (14). Figure for the abstract: fig. 7

Description

Description

Title of the invention: Closure device for pressurized container containing a product, in particular a cosmetic product The present invention relates to a closure device for pressurized container containing a product, in particular a cosmetic product.

By "cosmetic product" means a product as defined in Regulation (EC) No. 1223/2009 of the European Parliament and of the Council of November 30, 2009 relating to cosmetic products.

Conventionally, a pressurized container comprises a dispensing valve which is fixed on a cup which is itself crimped or expanded on the neck of the container. The container internally delimits a storage tank inside which the product to be dispensed and a compressed propellant are arranged.

The propellant can be directly in contact with the product to be dispensed inside the container. The container is filled with propellant via the dispensing valve. When you do not want the product to be dispensed to be in contact with the propellant, we can plan to separate them by a flexible bag or by a piston. In this case, a filling valve or plug is provided on the bottom of the container for the introduction of the propellant.

With this type of pressurized container, there are in particular problems associated with recycling or recharging the product.

Patent application FR-A1-2 951 140 describes a rechargeable diffuser box of the type comprising a pocket mounted inside a container and containing the product to be dispensed, and a propellant introduced inside the container for exerting pressure on the pocket. The dispensing valve is crimped or expanded on a cup.

So as to be able to reload the housing with product, there is provided a ring which screws onto the container and which places the cup carrying the dispensing valve against the open end of the container. Once the product contained in the pocket has been fully dispensed, unscrewing the ring allows access to this pocket and to replace it.

In this previous patent application, the diffuser housing is designed so as to make it impossible to manually unscrew the ring in the presence of propellant inside the container.

It is therefore necessary to completely purge the propellant before being able to recharge the diffuser housing.

In addition, it is essential to prevent untimely unscrewing of the ring, in particular by children, so as not to access the content of the diffuser housing, even after the compressed propellant gas contained in the container has been purged.

There are known patent applications US 14/580, 441 - Al and US 2010 313 527 - Al, different types of so-called child safety mechanisms configured to avoid unscrewing of one part with respect to another by a simple rotation action.

The present invention aims to remedy these drawbacks.

The invention relates to a closure device for a pressurized container containing a product, in particular a cosmetic product, which comprises a valve for dispensing said product and a cover delimiting an access opening to the distribution valve and comprising a mounting skirt intended to be screwed onto said container. The cover mounting skirt is provided with a bore comprising at least one helical thread.

According to a general characteristic, this thread is provided with a plurality of thread segments spaced apart from each other in the circumferential direction. Notches are formed on the bore of the mounting skirt by the spaces between the thread segments.

The closure device further comprises a locking cap mounted on the cover between an unlocked or disengaged position, in which the cap is movable in rotation relative to said cover, and a position engaged with said cover in which the rotation of said cap causes the cover to rotate.

With the closure device equipped with such a cover, it is possible to be able to open the associated container under pressure insofar as the notches in the thread allow the passage and evacuation of the propellant contained in the container during the unscrewing the cover.

This avoids propulsion of the dispensing valve, or the lid, in a manner not controlled by the user when he manually unscrews the lid in order to detach it from the container. This avoids ejection under the effect of the pressure of the propellant gas, which can cause personal injury.

Thus, it is possible to be able to recharge or recycle the container equipped with the closure device in a safe, simple and rapid manner without necessarily having to first purge the propellant gas.

In addition, thanks to the locking cap, untimely unscrewing of the cover is avoided.

Advantageously, the locking cap comprises latching means on the cover configured to ensure the axial joining of said cap relative to the cover.

Thus, the locking cap snapped onto the cover forms with said cover an inseparable assembly. The cap cannot move axially upwards, but only downwards.

The locking cap preferably comprises an outer skirt radially surrounding the cover mounting skirt.

For example, the outer skirt of the cap has a diameter greater than the diameter of the cover mounting skirt.

The external mounting skirt of the locking cap is centered on the longitudinal axis. The skirt has, for example, a circular cross section. For example, the annular skirt has a single diameter.

The external mounting skirt is delimited in the radial direction by an outer surface and by an opposite inner surface forming a bore. The bore is coaxial with the longitudinal axis and cylindrical in shape.

Advantageously, the outer skirt of the locking cap comprises an annular bead projecting towards the cover mounting skirt for the locking cap to be snapped onto the cover.

At least the skirt of the locking cap can be elastically deformable so as to be able to be mounted axially on the skirt until the latching means snap, for example of the annular bead against the lower end of the skirt cover mounting.

By "elastically deformable" means any element, by its shape or its material, capable of deforming in a non-permanent manner under the action of a stress and return to its original shape as soon as all solicitations.

According to one embodiment, the skirt of the locking cap comprises, on its inner surface, engagement mechanisms arranged at a radial distance from complementary engagement mechanisms provided on the outer surface of the skirt for mounting the cover externally , said engagement mechanisms being configured to engage upon application of an external radial force to the locking cap.

In the absence of external radial stress on the locking cap, the engagement mechanisms of said cap are engagement mechanisms of complementary shape provided on the cover.

Thus, in the absence of external radial stress on the locking cap, the rotation of said cap does not cause the rotation of the cover which cannot be unscrewed relative to the container.

In the engaged position of the locking cap, when the user presses radially on the skirt of said cap in order to engage the engagement mechanisms and the user simultaneously rotates said cap, the cover is unscrewed relative to the container .

In other words, the simultaneous action of a radial force and a torque in the unscrewing direction makes it possible to unscrew the closure assembly of the container.

For example, the cap engagement mechanisms include axial ribs and the lid engagement mechanisms include complementary axial grooves.

According to another embodiment, the outer skirt of the locking cap comprises, on its inner surface, engagement mechanisms axially separated from engagement mechanisms of complementary shape provided on the outer surface of the outer mounting skirt of the cover, said engagement mechanisms being configured to engage upon the application of an external axial force to the locking cap.

In the unlocked position of the locking cap, that is to say in the absence of axial stress on the cap, the engagement mechanisms are separated axially, so that the rotation of said cap does not cause the rotation of the lid which cannot be unscrewed relative to the container.

In the engaged position of the locking cap, when the user presses axially on the outer skirt of said cap in order to engage the engagement mechanisms and when the user simultaneously rotates said cap, the cover is unscrewed relative to the container.

In other words, the simultaneous action of an external axial force and a torque in the unscrewing direction makes it possible to unscrew the closure assembly of the container.

In the embodiment requiring the double action of an axial force and a rotational force to allow the lid to be unscrewed relative to the container, the axial stress on the cap which acts as a push button makes it possible to know s 'there is gas under pressure before unscrewing the container lid.

For example, the cap engagement mechanisms include teeth projecting radially toward the skirt of the cover and the cap skirt engagement mechanisms include teeth protruding radially toward the skirt of the cap.

Preferably, the locking cap comprises an upper end wall axially spaced from an end wall of the cover and at least one elastic member mounted between the lower surface of said end wall of the cap and a surface top of the end wall of the cover.

By “elastic member” is meant any element capable of deforming, by its shape or its material, in a non-permanent manner under the action of an axial force and returning to its initial shape as soon as the all requests.

For example, the elastic member has the shape of an annular projection inclined towards the longitudinal axis. The free end of the elastic member comes into axial contact with the upper surface of the end wall of the cover.

Alternatively, there could be several inclined projections extending between the end wall of the cap and the end wall of the cover. One could also provide any spring means making it possible to maintain the axial distance d between the end wall of the cap and the end wall of the cover in the absence of axial stress on the locking cap by the user.

The outer skirt of the cap extends axially from the end wall. The outer cap mounting skirt extends axially a large diameter edge of the end wall of the cap. The cap external mounting skirt is delimited in the axial direction by the end wall of the cap and by the latching means directed towards the external mounting skirt of the cover.

The locking cap comprises a housing formed on the end wall of said cap to receive the valve stem, said housing comprising a dispensing orifice allowing the flow of the product contained in the container to the outside.

The locking cap also acts as a push button to allow the valve to be actuated and the product contained in the container to be dispensed.

Preferably, the gas evacuation notches of said thread are arranged so as to delimit on the bore of the mounting skirt axial passages.

The cover may include a front wall from which the mounting skirt extends and provided with the access opening to the dispensing valve.

According to a first design, the dispensing valve is fixed to the cover. Thus, the cover performs a double function, namely the exhaust of the propellant gas from the container when unscrewing and the support of the dispensing valve. This makes it possible to obtain a closure device with a limited number of parts. The cost price of the device is reduced.

According to a second alternative design, the closure device may comprise a cup on which the dispensing valve is fixed, and a connecting piece supporting this cup and intended to be fixed on the container, for example on the side of the access opening of the container. With such a design, the cover covers the connecting piece.

According to the first design in which the dispensing valve is fixed on the cover, the latter may for this purpose include an internal fixing skirt. This fixing skirt can extend from the front wall of the cover. The dispensing valve can be fixed by rolling, which consists of mechanically deforming, hot or cold, the material of the internal fixing skirt of the cover, or even by screwing onto said skirt.

Advantageously, the cover is produced inexpensively in one piece, for example by molding a synthetic material.

In a particular embodiment, the cover comprises a sealing skirt capable of coming to engage with the opening of the container. According to an advantageous arrangement, at least one turn of the helical thread of the cover mounting skirt extends axially below the sealing skirt.

Thus, it is ensured that there remains at least one turn of the thread engaged with the thread of the container when the sealing skirt of the cover is no longer in sealed contact with the container. This allows for safe opening of the container.

In another embodiment, as a replacement for this sealing skirt, the cover can accommodate a sealing gasket mounted in abutment against the front wall of said cover.

The invention also relates to an assembly comprising a pressurized container containing a product, in particular a cosmetic product, and provided externally with at least one helical thread, and a closure device as defined above screwed onto said thread of the container.

Advantageously, gas evacuation spaces are provided between the bottom of said container thread and the top of said helical thread of the mounting skirt of the cover of the closure device. This arrangement contributes to the evacuation of the propellant gas contained in the container when the lid is unscrewed.

The propellant can be directly in contact with the product to be dispensed inside the container, or separated from it by a pocket or a piston.

The present invention will be better understood on studying the detailed description of embodiments, taken by way of non-limiting examples and illustrated by the appended drawings, in which:

[Fig.l] is a longitudinal sectional view of a closure device screwed onto a storage container according to a first embodiment of the invention;

[Fig.2] is a perspective view of a cover of the closure device of Figure 1;

[Fig.3] is a partial sectional view of the cover of Figure 2;

[Fig.4] [0065] [fig.5] [0066] [fig.6] are views in longitudinal section of closure devices screwed onto containers according to other embodiments of the invention; and [fig.7] [0068] and [0069] [fig.8] are views in longitudinal section of closure devices screwed onto containers according to other exemplary embodiments of the invention.

In Figure 1 is shown a closure device, designated by the general reference 10, which is intended to be screwed onto a container 12 for storing a product under pressure. The device 10 is shown in a supposedly vertical position and extends along a longitudinal axis X-X '.

The device 10 comprises a cover 14 for closing the container 12 and a valve 16 for dispensing the product contained in the container. In the illustrated embodiment, the valve 16 is supported by the cover 14.

The cover 14 is screwed onto the storage container 12. As will be described in more detail below, the cover 14 is designed to allow opening under pressure of the container 12.

The dispensing valve 16 extends partly inside the container 12. The dispensing valve 16 comprises a valve body 18 and a valve stem 20 movable axially relative to the valve body 18. The stem valve 20 extends axially projecting from the valve body 18. The valve body 18 defines a chamber 22 in which the valve stem 20 is engaged.

The valve stem 20, of axis X-X ’, is able to move in the chamber 22 between a closed position of the valve illustrated in FIG. 1 and an open position. The device 10 comprises a sealing washer 24 interposed between the valve body 18 and the cover 14. The valve body 18 is extended, axially on the side opposite the sealing washer 24, by a nozzle 25 in communication with the chamber 22 and on which is provided to attach a dip tube (not shown). An axial distribution channel 26 is formed in the valve stem 20 and communicates, at its lower end, with a radial channel 28 opening onto the outer surface of said stem. The distribution channel 26 opens onto the upper front face of the valve stem 20. In the valve closed position, the sealing washer 24 closes the radial channel 28 so that it does not communicate with the chamber 22 .

In a manner known per se, the valve stem 20 may be provided, at its upper end, with a push button (not shown) to allow actuation of the valve 16 and the distribution of the product contained in the container 12. The dispensing valve 16 is equipped with a spring (not shown) mounted between the valve body 18 and the valve stem 20 to maintain said stem in the closed position in the absence of stress on the push-button by the user.

The cover 14 is made in one piece by molding a synthetic material, for example polypropylene (PP), polyethylene (PE), acrylonitrile butadiene styrene (ABS), polyethylene terephthalate (PET) , polyketone, etc.

The cover 14 comprises an upper front end wall 30 and a skirt 32 for external mounting extending said wall. An opening 34 for access to the distribution valve 16 is formed on the end wall 30. The opening 34 allows the passage of the valve stem 20 of the distribution valve. The valve stem 20 extends through the opening 34 and protrudes relative to the end wall 30 on the side opposite to the mounting skirt 32. The opening 34 is through and formed in the thickness of the end wall 30. The opening 34 is centered on the axis X-X ’. The end wall 30 axially bears against the upper end of the container 12.

The cover mounting skirt 32 is centered on the axis X-X ’. The mounting skirt 32 extends axially from the end wall 30. The end wall 30 extends radially. The mounting skirt 32 axially extends an edge of large diameter of the end wall 30. The skirt 32 has a circular cross section. In the illustrated embodiment, the annular mounting skirt 32 has a stepped shape with two cylindrical parts of different diameters. Alternatively, the mounting skirt 32 may have a single diameter.

As will be described in more detail below, the mounting skirt 32 internally comprises a helical thread 36 discontinuous in the circumferential direction for the screwing of the cover 14 on the container 12. The mounting skirt 32 is delimited in the radial direction through an outer surface 33 and through an opposite inner surface forming a bore 32a. The bore 32a is coaxial with the axis X-X ’and of cylindrical shape. The thread 36 is formed on the bore 32a.

The cover 14 also includes a skirt 38 of annular internal fixing to allow the fixing of the dispensing valve 16 on said cover. The fixing skirt 38 extends axially from the underside of the front end wall 30. Skirt 38 is centered on the X-X ’axis. The mounting skirt 32 radially surrounds the internal fixing skirt 38 while remaining radially away from it. In the exemplary embodiment illustrated, the fixing of the distribution valve 16 inside the internal skirt 38 of the cover is effected by bolting.

The cover 14 further includes an annular sealing skirt 40 extending axially from the underside 30a of the front end wall 30. The sealing skirt 40, of axis X-X ’, is located radially between the external skirts 32 and internal 38 while remaining radially away from them. The sealing skirt 40 engages in a sealed manner in an opening 42 for access to the container. The free end of the sealing skirt 40 is axially offset from the side of the end wall 30 relative to the engagement end of the thread 36 of the cover. In the illustrated embodiment, two turns of the thread 36 extend axially below the sealing skirt 40.

The container 12, of axis X-X ’, internally delimits an internal volume or reservoir 44 for the storage of the cosmetic product. The container 12 includes a bottom end (not visible) and an opposite open end which delimits the access opening 42 to the internal tank 44. The container 12 is provided externally with a thread 46 engaged with the thread 36 of the cover mounting skirt. The thread 46 can be continuous or discontinuous in the circumferential direction. The container 12 can be made of metallic material or of synthetic material.

As indicated above, the thread 36 of the mounting skirt is discontinuous in the circumferential direction. As is more clearly illustrated in FIGS. 2 and 3, the thread 36 is formed by a succession of helical thread segments 50 spaced apart from one another in the circumferential direction. In Figure 3, only the outer skirt 32 of the cover has been shown in full. The thread segments 50 of the cover are formed on the bore 32a of the outer skirt and extend radially inwards. The circumferential spacing between two successive thread segments 50 is identical along the thread 36. The thread segments 50 are aligned in the axial direction. In the illustrated embodiment, the thread segments 50 have an identical circumferential dimension. As a variant, it is possible to provide segments of threads having different circumferential dimensions.

The space between two successive thread segments 50 in the circumferential direction forms, on the bore 32a of the mounting skirt, a notch 52. In other words, each notch 52 is delimited between an end edge of a thread segment 50 and the end edge opposite the immediately adjacent thread segment 50.

The notches 52 of one turn of the thread 36 are axially aligned with the notches 52 of the next turn of the thread. Thus, the notches 52 are arranged so as to delimit on the bore 32a of the skirt 32 for mounting the axial passages. These axial passages are therefore entirely devoid of thread segments 50.

Each thread segment 50 of the thread is delimited in the axial direction by an upper flank 50a oriented axially on the side of the end wall 30, and by an opposite lower flank 50b. The upper side 50a forms a continuous helical ramp in the circumferential direction. This helical ramp is inclined radially inwards and downwards. Each thread segment 50 of the thread also includes an apex (not referenced) separating the upper sides 50a and lower 50b. The apex connects the small diameter ends of the sides 50a upper and 50b lower.

As indicated above, the thread 36 of the cover mounting skirt is engaged with a thread 46 of the container. Referring again to FIG. 1, the thread 46 comes to bear on the upper sides of the thread segments of the thread 36.

Spaces 54 are formed radially between the bottom of the thread 46 of the container 12 and the top of the thread 36 of the cover 14. Spaces (not referenced) are also provided axially between the thread 46 of the container and the lower sides of the segments thread thread 36 of the cover.

The spaces between the threads 46, 36 of the container and of the lid as well as the notches 52 of the latter are provided to allow the passage and the evacuation of the propellant gas contained inside the container 12 when it is opened. At the opening, when the user unscrews the cover 14, the evacuation of the propellant gas begins as soon as the sealing skirt 40 of said cover is no longer in sealed radial contact against the access opening 42 of the container.

In this position, the thread 36 of the cover is still in engagement with the thread 46 of the container, which allows the container to be opened without risk of propulsion of the cover 14 and of the dispensing valve 16.

The embodiment illustrated in FIG. 4, in which the identical elements bear the same references, differs from the preceding example mainly in that the cover 14 houses a seal 60 for sealing with the container 12. The seal 60 is mounted axially in abutment against the front end wall 30 of the cover.

In this embodiment, the cover 14 also includes an annular centering skirt 62 extending axially from the underside of the front end wall 30. The centering skirt 62, of axis X-X ’, is located radially between the external skirts 32 and internal 38 while remaining radially away from them. The seal 60 is mounted on the centering skirt 62 of the cover.

The centering skirt 62 is equipped on its outer surface with a bead 64 to ensure the axial retention of the seal 60 for sealing on said skirt. The bead 64 extends radially outward. The bead 64 may be continuous or discontinuous in the circumferential direction. The seal 60 is located axially between the bead 64 and the front end wall 30. The upper end of the container 12 bears axially against the seal 60 for sealing at the end of the screwing stroke of the cover 14. The seal 60 is advantageously made of compressible material, for example of elastomeric material.

Unlike the first embodiment, the evacuation of propellant gas from the container 12 takes place here from the start of the unscrewing of the cover 14.

The embodiments illustrated in Figures 5 and 6, in which the identical elements bear the same references, differ from the first and second examples respectively in that the fixing of the distribution valve 16 on the internal fixing skirt 38 of the cover is secured by screwing. For this purpose, the fixing skirt 38 internally comprises a helical thread 66 engaged with a corresponding thread 68 formed on the valve body 18 of said valve. The thread 68 of the valve body may be continuous or discontinuous in the circumferential direction.

The embodiment illustrated in Figures 7 and 8, in which the identical elements have the same references, differ from the previous examples mainly in that the closure device 10 comprises a locking cap 70 mounted on the cover 14 .

Said locking cap 70 comprises an unlocked or disengaged position, in which the cap 70 is movable in rotation relative to the cover 14 and a position engaged with the cover 14 in which the rotation of said cap 70 causes the rotation of the cover 14 .

The locking cap 70 comprises an upper front end wall 72 and an external mounting skirt 74 extending said wall. A housing 76 is provided on the end wall 72 to receive the valve stem 20. Said housing 76 includes a dispensing orifice 76a allowing the product contained in the container 12 to flow outwards.

The front end wall 72 of the locking cap 70 is axially separated from the end wall 30 of the cover 14 by an axial distance d.

The locking cap 70 is equipped with an elastic member 78 mounted between the lower surface (not referenced) of the end wall 72 of the cap 70 and the upper surface (not referenced) of the end wall 30 cover 14.

By “elastic member” is meant any element, by its shape or its material, capable of deforming non-permanently under the action of an axial force and of resuming its initial shape as soon as the all requests.

As illustrated, the elastic member 78 has the shape of an annular projection inclined towards the longitudinal axis X-X ’. The free end (not referenced) of the elastic member 78 comes into axial contact with the upper surface of the end wall 30 of the cover 14.

Alternatively, one could provide several inclined projections extending between the end wall 72 of the cap 70 and the end wall 30 of the cover 14. One could also provide any spring means for maintaining the axial distance d between the end wall 72 of the cap 70 and the end wall 30 of the cover 14 in the absence of axial stress on the locking cap 70 by the user.

The skirt 74 for external mounting of the locking cap 70 is centered on the axis X-X ’. The skirt 74 extends axially from the end wall 72. The mounting skirt 74 axially extends a large diameter edge of the end wall 72. The skirt 74 has a circular cross section. In the exemplary embodiment illustrated, the annular skirt 74 has a single diameter. The diameter of said skirt 74 is greater than the diameter of the skirt 32 for mounting the cover 14.

The mounting skirt 74 is delimited in the radial direction by an outer surface 74a and by an opposite inner surface forming a bore 74a. The bore 74a is coaxial with the axis X-X ’and cylindrical in shape.

The mounting skirt 74 is delimited in the axial direction by the end wall 72 and by an annular bead 80 projecting from the lower surface 74b towards the skirt 32 for mounting the cover 14.

The mounting skirt 74 is elastically deformable so that it can be mounted axially on the skirt 32 until the annular bead 80 is snapped against the lower end (not referenced) of the skirt 32 for mounting the cover.

Thus, the locking cap 70 snapped onto the cover 14 form an inseparable assembly.

As illustrated in FIG. 7, the skirt 74 of the locking cap 70 comprises, on its inner surface 74b, engagement mechanisms 82 intended to engage with engagement mechanisms 35 of complementary shape provided on the outer surface 33 of the cover mounting skirt 32 during the application of a radial force on the locking cap 70.

By engagement mechanisms, one can provide, for example, axial ribs cooperating with axial grooves.

In the absence of radial stress on the locking cap 70, the engagement mechanisms 82 of said cap are arranged at a radial distance from the engagement mechanisms 35 of complementary shape provided on the cover 14.

Thus, in the absence of radial stress on the locking cap 70, the rotation of said cap does not cause the rotation of the cover 14 which cannot be unscrewed relative to the container 12.

In the engaged position of the locking cap 70, when the user presses radially on the skirt 74 of said cap 70 according to the arrow F1 illustrated in FIG. 7 in order to engage the engagement mechanisms 82, 35 and the user rotates simultaneously said cap 70 according to arrow F2 illustrated in FIG. 7, the cover 14 is unscrewed relative to the container 12.

In other words, the simultaneous action of a radial force and a torque in the unscrewing direction makes it possible to unscrew the closure assembly 10 of the container 12.

In the example illustrated in Figure 8, in which the identical elements have the same references, differ from the example in Figure 7 mainly in that the skirt 74 of the locking cap 70 comprises, on its surface interior 74b, engagement mechanisms 82 intended to engage with engagement mechanisms 35 of complementary shape provided on the exterior surface 33 of the skirt 32 for mounting the cover 14 when an axial force is applied to the locking cap 70.

As illustrated, part of the internal periphery 74b of the skirt 74 of the cap 70 comprises teeth 82 projecting radially towards the skirt 32 of the cover 14 and a part of the external periphery 33 of the skirt 32 of the cover comprises teeth 35 projecting radially towards the skirt 74 of the cap 70.

In the unlocked position of the locking cap 70, that is to say in the absence of axial stress on the cap 70, the teeth 82, 35 are separated axially, so that the rotation of said cap does not does not cause the lid 14 to rotate, which cannot be unscrewed relative to the container 12.

In the engaged position of the locking cap 70, when the user presses axially on the skirt 74 of said cap 70 according to the arrow F3 illustrated in FIG. 8 in order to engage the engagement mechanisms 82, 35 and that l the user simultaneously rotates said cap 70 according to arrow F4 illustrated in FIG. 8, the cover 14 is unscrewed relative to the container 12.

In other words, the simultaneous action of an axial force and a torque in the unscrewing direction makes it possible to unscrew the closure assembly 10 of the container 12.

The locking cap 70 also acts as a push button to allow actuation of the valve 16 and the distribution of the product contained in the container 12.

In the embodiment illustrated in Figure 7 requiring the double action of an axial force and a rotational force to allow the unscrewing of the cover relative to the container, the axial stress on the cap 70 which acts as push button lets you know if there is any gas under pressure before unscrewing the container lid.

Thanks to the locking cap 70, untimely unscrewing of the cover is avoided.

Thanks to the invention, there is a closing device allowing a pressurized opening of the associated container, for example to reload the container with product or to recycle it.

Claims (1)

claims [Claim 1] Closing device (10) for a pressurized container containing a product, in particular a cosmetic product, comprising a valve (16) for dispensing said product and a cover (14) delimiting an opening (34) for access to the valve (16) of distribution and comprising a mounting skirt (32) intended to be screwed onto said container (12), said mounting skirt (32) being provided with a bore (32a) comprising at least one helical thread (36), characterized in that that said thread (36) is provided with a plurality of thread segments (50) spaced apart from each other in the circumferential direction, notches (52) being formed on the bore (32a) of the skirt (32 ) mounting the cover by the spaces separating the thread segments (50), the device further comprising a locking cap (70) mounted on the cover (14) between an unlocked position in which said cap is movable in rotation relative to audit cover (14), and a position engaged with said cover (14) in which rotation of said cap (70) causes rotation of the cover (14). [Claim 2] Closure device (10) according to claim 1, wherein the locking cap (70) comprises latching means (80) on the cover (14) configured to ensure the axial attachment of said cap (70) relative to the cover (14). [Claim 3] Closure device (10) according to claim 1 or 2, wherein the locking cap (70) comprises an outer skirt (74) radially surrounding the skirt (32) for mounting the cover (14). [Claim 4] Closure device (10) according to claim 2 and 3, wherein the outer skirt (74) of the locking cap (70) comprises an annular bead (80) projecting towards the skirt (32) for mounting the cover (14) for latching the locking cap (70) on the cover (14). [Claim 5] Closure device (10) according to claim 3 or 4, wherein at least the outer skirt (74) of the locking cap (70) is elastically deformable. [Claim 6] Closure device (10) according to any one of claims 3 to 5, in which the external skirt (74) of the locking cap (70) comprises, on its internal surface (74b), engagement mechanisms (82) arranged at a radial distance from complementary engagement mechanisms (35) provided on the outer surface (33) of the cover mounting skirt (32) (14), said engagement mechanisms (82, 35) being configured to engage when an external radial force is applied to the locking cap ( 70). [Claim 7] A closure device (10) according to claim 6, wherein the engagement mechanisms (82) of the cap (70) comprise axial ribs, and the engagement mechanisms (35) of the cover (14) comprise axial grooves. [Claim 8] Closure device (10) according to any one of claims 3 to 5, in which the external skirt (74) of the locking cap (70) comprises, on its internal surface (74b), engagement mechanisms (82) axially separated from complementary engagement mechanisms (35) provided on the outer surface (33) of the cover mounting skirt (32) (14), said engagement mechanisms (82, 35) being configured to engage during applying an external axial force to the locking cap (70). [Claim 9] Closure device (10) according to claim 8, in which the engagement mechanisms (82) of the cap (70) comprise teeth projecting radially towards the skirt (32) of the cover (14), and the engagement mechanisms (35) of the skirt (32) of the cover (14) comprise teeth projecting radially towards the skirt (74) of the cap (70). [Claim 10] A closure device (10) according to any one of the preceding claims, wherein the locking cap (70) comprises an upper end wall (72) spaced axially from an end wall (30) of the cover (14 ) and at least one elastic member (78) mounted between the lower surface of said end wall (72) of the cap (70) and an upper surface of the end wall (30) of the cover (14). [Claim 11] Assembly comprising a pressurized container (12) containing a product, in particular a cosmetic product, and externally provided with at least one helical thread (56), and a closure device (10) according to any one of the preceding claims screwed onto said thread (56) of the container (12). 1/4