EP4176764A1 - Self-cleaning box for powder cosmetic product - Google Patents

Self-cleaning box for powder cosmetic product Download PDF

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Publication number
EP4176764A1
EP4176764A1 EP22187633.7A EP22187633A EP4176764A1 EP 4176764 A1 EP4176764 A1 EP 4176764A1 EP 22187633 A EP22187633 A EP 22187633A EP 4176764 A1 EP4176764 A1 EP 4176764A1
Authority
EP
European Patent Office
Prior art keywords
face
contact
cover
membrane
sieve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22187633.7A
Other languages
German (de)
French (fr)
Inventor
Emir EZZINA
Mélodie BAZINVAL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Albea Services SAS
Original Assignee
Albea Services SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Albea Services SAS filed Critical Albea Services SAS
Publication of EP4176764A1 publication Critical patent/EP4176764A1/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D33/00Containers or accessories specially adapted for handling powdery toiletry or cosmetic substances
    • A45D33/003Powder boxes
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D33/00Containers or accessories specially adapted for handling powdery toiletry or cosmetic substances
    • A45D33/22Containers with lids or covers at the top and the bottom
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D33/00Containers or accessories specially adapted for handling powdery toiletry or cosmetic substances
    • A45D2033/001Accessories
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D2040/0006Accessories
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00Details not otherwise provided for in A45D
    • A45D2200/05Details of containers
    • A45D2200/051Airtight containers
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00Details not otherwise provided for in A45D
    • A45D2200/10Details of applicators
    • A45D2200/1009Applicators comprising a pad, tissue, sponge, or the like
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D33/00Containers or accessories specially adapted for handling powdery toiletry or cosmetic substances
    • A45D33/006Vanity boxes or cases, compacts, i.e. containing a powder receptacle and a puff or applicator
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D33/00Containers or accessories specially adapted for handling powdery toiletry or cosmetic substances
    • A45D33/02Containers or accessories specially adapted for handling powdery toiletry or cosmetic substances with dispensing means, e.g. sprinkling means

Definitions

  • housing design intended to receive a powdery cosmetic product, such as loose powder or other similar products used to make up.
  • the case comprises a base comprising a cavity intended to contain a powdery cosmetic product, a sieve which is arranged at the level of the opening of the cavity and through orifices from which the cosmetic product is discharged for use.
  • Such a box has the particular disadvantage of presenting a dispersion of the powdery cosmetic product through the multiple orifices of the sieve, in other words an uncontrolled discharge of said product out of the cavity forming the reservoir.
  • the dispersion of the cosmetic product through the sieve is likely to occur on the one hand during transport of the case in the closed position and, on the other hand, during use of the case in the open position. During transport, the dispersion of the cosmetic product is limited by a lid covering the sieve in the closed position.
  • an applicator - typically a sponge - so that at least part of the cosmetic product dispersed through the orifices is picked up by the sponge.
  • the sponge does not completely prevent the powdery cosmetic product from dispersing out of the cavity, which poses a problem of cleanliness of the case.
  • the sponge is therefore tightly pressed against the walls of the case.
  • suction cup effect of the pulverulent cosmetic product
  • the sponge then has on its face in contact with the grid an often excessive amount of cosmetic product so that the saturated sponge is then difficult to use for applying makeup.
  • a stopper for example integral with the lid of the case.
  • Such a stopper is configured to coming to cover the sieve in the closed position of the casing so as to isolate it and thus to prevent the powdery cosmetic product from being able to disperse.
  • the sieve is covered with powdery cosmetic product.
  • a plug does not make it possible to clean the screen by reintroducing the powdery cosmetic product inside the cavity.
  • the powdery cosmetic product When the powdery cosmetic product is found in the space between the sieve and the cap, said cosmetic product consequently covers the surface of the cap, in the same way as the face of a sponge according to the previous example.
  • the cosmetic product present on the surface of the stopper is then liable to disperse everywhere after the opening of the lid, in particular to soil the case, the hands of the user, etc.
  • the housing is characterized in that the contact face the membrane is elastically deformable in bending so that the contact face matches the shape of the sieve during the screwing of the lid, the contact face having elements relief.
  • the contact face has a different shape between the fully unscrewed position of the lid and the fully screwed position of the lid.
  • the membrane is elastically deformable in bending when screwing the cover between a state of partial contact of the contact face with the sieve when the cover occupies a first position and a state of total axial support. of the contact face against the entire surface of the sieve when the cover occupies a second position.
  • the contact face reaches its state of total axial support before the cover reaches its fully screwed position, the deformation of the deformable section allowing axial sliding of the cover towards the sieve to its fully screwed-in position.
  • annular sealing portion of the membrane which surrounds the contact face, is intended to come into sealed contact with an annular face of the bowl in the fully screwed position.
  • the joint is configured so that, during unscrewing, a periphery of the contact face begins by diverging axially from the sieve to release a peripheral zone of the sieve, an interior zone complementary to said zone peripheral remaining fully in contact with the contact face.
  • the seal is configured so that the sealing portion is moved away from its front bearing face or simultaneously at the beginning of the separation of the periphery of the contact face from the peripheral zone of the sieve to create a gap for the passage of air towards the interior of the cavity through said peripheral zone.
  • the contact face of the seal has, in a state of rest of the membrane, a periphery of convex shape.
  • the contact face in a state of rest of the membrane, has a convex shape over its entire surface from a central point arranged substantially at the level of a central axis of the sieve.
  • the elastically deformable section is formed by an annular bellows which surrounds the chamber.
  • the deformable section has a lower flexibility than that of the membrane so that the contact face begins to deform in bending before the attachment section.
  • the seal is made in one piece.
  • the gasket and the cover are made of the same material.
  • the elements in relief are regularly distributed over the entire surface of the contact face.
  • the relief elements are pins.
  • an axial orientation parallel to a main axis of the housing and indicated by the arrow "A" which is directed from bottom to top, will be adopted without limitation.
  • Radial orientations will also be adopted which extend radially with respect to the main axis of the case, from the inside outwards.
  • said main axis constitutes an axis of rotation for screwing the cover onto a base of the case.
  • top and bottom are used as a geometric reference in relation to the axial orientation as represented in the figures and independently of the direction of Earth's gravity.
  • FIG. 1 a housing 10 for a powdery cosmetic product in the closed position and, at the figure 2 , the same housing 10 in the open position.
  • a pulverulent cosmetic product consists for example of loose powder intended to be used for applying make-up. It is for example a powdery cosmetic product applied to the face using an applicator (not shown), in particular using a brush or even a sponge (or any other equivalent means) .
  • the pulverulent cosmetic product is intended to be applied by means of a brush which here is separate from said box 10.
  • the casing 10 for powdery cosmetic product comprises at least one lid 12 and a base 14 which are mounted to move relative to each other between at least one closed position, shown in FIG. 1, and an open position of the casing 10 , represented at the figure 2 , in which the cover 12 is removed from the base 14.
  • Cover 12 is intended to be screwed onto an associated thread 34 of base 14.
  • Housing 10 has a main axis O determining the axial direction.
  • the base 14 is located at the bottom and the lid 12 at the top.
  • the lid 12 is more particularly intended to be screwed by rotation around the main axis O on the base 14.
  • the lid 12 and the base 14 have a complementary shape giving the case 10 its aesthetics, especially in the closed position.
  • the housing 10 has a generally cylindrical shape of revolution centered on said main axis O.
  • the case could have another general shape, in particular parallelepiped, in particular a square or rectangular shape.
  • the case 10 is a case of the “compact” type, that is to say dimensioned so as to be able to be transported, in particular but not exclusively in a bag, for example the handbag of a user.
  • the cover 12 is removable relative to the base 14, that is to say that the cover 12 is separated from the base 14 in the open position of the housing 10 as shown in figure 2 .
  • the cover could be connected to the base by means of a flexible fastener allowing it to be screwed on and unscrewed from the base.
  • the base 14 comprises a cavity 16 for receiving said product, visible for example at the figure 8 .
  • the cavity 16 opens axially upwards through an opening 18 in a bowl 20 open axially upwards, outside the base.
  • a sieve 22 equipped with orifices for passing the product is arranged in the opening 18 to form a delimitation between the cavity 16 and the bowl 20.
  • the invention is applicable to a housing 10 mainly comprising the cavity 16 for receiving the cosmetic product delimited at the top by the sieve 22 and which opens into a basin 20.
  • the base 14 comprises, without limitation, several assembled components.
  • the base 14 here comprises a base 24, a container 26 and a ring 28 for fixing the container 26 in the base 24.
  • This configuration makes it possible to replace the container 26 when it is empty or when it is desired to change the cosmetic product in a clean and fast, while retaining the rest of the housing 10. This configuration is therefore both economical and ecological.
  • the base 24 comprises a housing 29.
  • the housing 29 is divided into two sections.
  • a lower section 30 of the housing 29 is intended to receive the container 26, while the upper section of the housing 29 is intended to remain free to receive the basin 20 allowing the powdery cosmetic product present in the sieve 22 to be removed using a an applicator without the risk of spreading it everywhere.
  • the upper section of the housing 29 is delimited radially by a cylindrical wall 32.
  • the cylindrical wall 32 has on its outer face the thread 34 for screwing the cover 12.
  • the cylindrical wall 32 has an edge 35 of free upper end.
  • the upper section of the housing 29 is delimited from the lower section 30 by a face 36 of annular bearing which faces axially upwards.
  • the container 26 here comprises the cavity 16 which is delimited radially by a peripheral wall 38 and axially downwards by a bottom 40, visible for example at the figure 8 .
  • the screen 22 is intended to be fixed on an edge 42 of the upper end of the peripheral wall 38 .
  • At least one of the peripheral wall 38 and the bottom 40 is made of a sufficiently flexible material for a user to be able to lift the bottom 40 in order to bring it into contact with the sieve 22 by simple pressure on the bottom 40 with a finger of the hand.
  • the housing 29 of the base 24 is closed at the bottom by a bottom 41 which is perforated with a window 43 for access to the bottom 40 of the container 26.
  • the sieve 22 is here a flexible sieve which is for example made in the form of a grid, made of nylon or other material, consisting of a set of meshes each delimiting one of the orifices through which the powdery cosmetic product passes out of the cavity.
  • the sieve 22 is carried by a frame 44 of complementary shape to that of the outline of the opening 18, here of circular shape, centered on the main axis O .
  • the frame 44 is made of a much more rigid material than the peripheral wall 38 and/or the bottom 40 of the container 26.
  • the frame 44 is for example made of a plastic material overmoulded on the periphery of the sieve 22.
  • the frame 44 is mounted by elastic interlocking on the upper edge 42 of the container 26.
  • the container 26 and the screen 22 are fixed to each other to form a single component easy to house in the base 24 and to replace .
  • the frame 44 makes it possible to give the upper end of the peripheral wall 38 greater rigidity.
  • the container 26 thus retains an opening 18 of the same shape, here circular, permanently during the use of the housing 10.
  • the container 26 further includes a rim 46 which surrounds the opening 18.
  • the rim 46 projects radially outwardly from the peripheral wall 38 .
  • the container 26 having a very flexible structure, it would be complicated to extract it from the top of the housing 29 by exerting pressure through the window 43 without spreading the rest of the powder that it contains outside. It is therefore preferable to be able to grip it by a more rigid part, namely by the flange 46, made more rigid by the frame 44.
  • the wall 32 of the cylindrical base 24 comprises at least two radially opposite indentations 48 which give access at least to the rim 46 of the container 26.
  • the indentations 48 are made in the upper edge 35 of the cylindrical wall 32 . They extend down to the bearing face 36. Each notch 48 allows a user to grasp the rim 46 with the pads of two fingers.
  • the ring 28 for fixing the container 26 is fixed by removable fixing means in the housing 29 by tightening the rim 46 of the container 26 against the face 36 of the bearing surface. The ring 28 will thus hold the container 26 firmly in its housing 29.
  • the fixing ring 28 comprises a peripheral wall 50 which has an external diameter slightly smaller than the internal diameter of the cylindrical wall 32 of the base 24 so that the ring 28 is received in the upper section of the housing 29 with a radial play allowing the assembly and dismantling.
  • the fixing ring 28 also comprises an upper annular wall 52 inclined in the direction of the opening 18 of the container 26 which radially delimits the bowl 20.
  • the upper wall 52 thus forms a funnel which makes it possible to slide the cosmetic product in the direction of the sieve. 22.
  • the upper wall 52 has for this purpose an internal diameter which is substantially equal to the diameter of the screen 22.
  • the upper wall 52 has a lower annular face 54 which is intended to press against the rim 46 of the container 26 when the fixing ring 28 is mounted in the base 24.
  • the annular face 54 presses here on the flange 26 via the frame 44 of the sieve 22.
  • the fixing ring 28 firmly holds the container 26 in position in its housing 29.
  • the flange 46 is clamped axially between the fixing ring 28 and the face 36 of bearing .
  • the fixing ring 28 is mounted in leaktight manner around the container 26.
  • the frame 44 has a flexible lip 56 which extends radially outwards from the periphery of the frame 44.
  • An annular bead 57 of the wall 52 upper ring 28 fixing is intended to come into tight contact axially against the lip 54 to ensure a good seal preventing the cosmetic product to pass between the container 26 and the ring 28 fixing.
  • the fixing ring 28 is here fixed to the base 24 by elastic interlocking in an axial direction.
  • the fixing ring 28 comprises two axial extension fixing lugs 58 that are elastically deformable in bending.
  • Each fixing lug 58 is provided at its free lower end with a stud 60 which is intended to be fitted, here radially outwards, in a notch 62 of the base 24.
  • each fixing lug 58 is flexible between a state of interlocking of the stud 60 in its notch 62, towards which it is elastically returned, and a state of disengagement, in which it is bent radially inwards and in which it is constrained against the force of elastic return.
  • An upper part of the fixing lugs 58, ensuring the connection with the rest of the ring 28, is formed by a part of the peripheral wall 50 delimited, along the circumference of the ring 28, by two axial slots 64 which are made in the peripheral wall 50 and which open downwards. These two slots 64 thus promote the flexibility of each lug 58 for fixing.
  • the fixing lugs 58 are here two in number and they are arranged diametrically opposite with respect to the main axis O of the housing 10.
  • the notches 62 are here arranged in line with the indentations 48.
  • the notches 62 are more particularly arranged below the face 36 of the bearing surface. This arrangement allows a user to urge the fixing lugs 58 towards their constrained state by urging them directly with their fingers through the indentations 48.
  • the fixing ring 28 is easily removable.
  • each fixing lug 58 formed in the peripheral wall 50, comprises a projection 66 which extends radially outwards and which is fitted axially with the notch 48. These projections 66 abut against the upper edge 35 of the cylindrical wall 32 of the base 24 when they are not aligned with a notch 48.
  • the projections 66 also make it possible to immobilize the ring 28 in rotation around the main axis O with respect to the base 24.
  • the cover 12 for closing the housing 29 is intended to be screwed onto the thread 34 of the base 24 between a completely unscrewed position, as shown in figure 8 , and a fully screwed position, as shown in figure 11 , in which it is brought axially closer to the sieve 22 to allow the sealing of the cavity 16.
  • the screwing is carried out by rotation of the cover 12 around the main axis O of the housing 10.
  • the lid 12 has an upper wall 68 from which a cylindrical wall 70 extends downwards.
  • An internal face of the cylindrical wall 70 has a thread 71 complementary to that of the base 24 so that the cover 12 can be screwed to the base 24.
  • the cover 12 is equipped with a seal 72 which is intended to seal the opening 18 in a fully screwed position of the cover to prevent the cosmetic product from coming out of its cavity 16.
  • the seal 72 comprises a sealed membrane 74 which extends generally parallel to the screen 22.
  • the membrane 74 has a lower face which forms a contact face 76 intended to rest on the entire surface of the screen 22 when the cover 12 occupies its fully screwed position.
  • the membrane 74 here has an outline of circular shape having a diameter at least equal to that of the sieve 22.
  • the contact face 76 is made of a material which has substantially no porosity capable of retaining or storing grains of cosmetic products.
  • the contact face 76 in particular does not have the structure of a sponge.
  • the seal 72 is made of an elastomeric material.
  • the seal 72 is here made in one piece, for example by molding.
  • the membrane 74 When the seal 72 is fixed to the cover 12, the membrane 74 is arranged at a distance from the upper wall 50 so that a chamber 78 is delimited axially between the cover 12 and the membrane 74.
  • the chamber 78 extends above of substantially the entire surface of the screen 22.
  • the membrane 74 is made of a flexible material. This chamber 78 allows the membrane to deform in bending under the effect of a pressure applied upwards on the face 76 of contact.
  • the contact face has, at rest, a shape different from that of the sieve 22.
  • the membrane 74 is thus elastically deformable in bending so that the contact face 76 matches the shape of the sieve 22 during the screwing of the cover 12 as will be explained. in more detail later.
  • the seal 72 comprises a section 80 elastically deformable in an axial direction which is fixed inside the cover 12 by an upper end.
  • Membrane 74 is attached to a lower end of the deformable section.
  • the elastically deformable section 80 radially delimits the chamber 78.
  • the membrane 74 is thus integral in rotation with the cover 12 around the main axis O.
  • the deformable section 80 is here formed by an annular bellows which surrounds the chamber 78.
  • An upper edge 82 of the bellows forming the deformable section 80 is intended to bear axially against an underside of the upper wall 68 of the cover 12.
  • the upper edge 82 of the deformable section 80 has teeth 84 projecting radially outwards. These teeth 84 are intended to be embedded radially in notches 86 made in a circular partition 88 which extends axially downwards from the underside of the upper wall 68 of the cover 12.
  • the circular partition 88 is here adapted to receive internally the upper edge 82 of the deformable section 80, with or without clearance.
  • the deformable section 80 is made of a material that is flexible enough to allow the elastic interlocking of the teeth 84 in the notches 86.
  • the volume of the chamber 78 is intended to vary according to the deformations of the deformable section 80, on the one hand, and the bending deformations of the membrane 74, on the other hand.
  • the vents 90 are here made in the form of grooves made in the upper edge 82 of the deformable section 80.
  • the vents 90 are arranged in correspondence with passages 92 reserved in the partition 88 circular.
  • the contact face 76 is intended to rub against the sieve 22 during the rotation of the cover 12. This friction makes it possible to push the grains of cosmetic product through the orifices of the sieve 22 to make them return to the cavity 16. Thus, the screen 22 and the contact face 76 are cleaned and contain no cosmetic product when the cover 12 is opened again.
  • the contact face 76 comprises relief elements.
  • the relief elements form a multitude of asperities on the face 76 of contact. More particularly, these relief elements are here formed by a multitude of spikes 94, visible in more detail at figure 4 .
  • the pins 94 are here distributed regularly over the entire contact face 76. In a variant of the invention, not shown, the pins are distributed with a greater density at the center of the contact face 76 than at its periphery.
  • the pins 94 here project axially to a height much lower than the thickness of the membrane 74, for example of the order of a tenth of a millimeter.
  • the pins 94 here all have the same height.
  • the spikes may have different heights depending on their location.
  • the pins also have dimensions much smaller than the diameter of the contact face, for example of the order of a millimeter, or even a tenth of a millimeter.
  • the spikes 94 are distributed with a high density. For example, the space separating the top of two adjacent pins 94 is between one and two times the width of the base of a pin 94.
  • the flexibility in compression of the membrane 74 is much lower than its flexibility in bending.
  • the flexibility in compression of the membrane 74 is much lower than the flexibility in axial deformation of the deformable section 80.
  • the cover 12 is pressed downwards, it is the deformation in bending of the membrane 74 and the axial deformation of the deformable section 80 which absorb these forces.
  • the membrane 74 has at its periphery a portion 96 of annular sealing which surrounds the face 76 of contact.
  • This annular sealing portion 96 is here formed by two superposed and parallel annular beads which project radially outwards from a peripheral edge of the membrane 74.
  • the sealing portion 96 is intended to come into sealed contact with an annular face 98 of the base 14 in the fully screwed position of the cover 12.
  • the membrane 74 when pressed against the screen 22, the membrane 74 has an outer diameter which is substantially equal to the inner diameter of the upper wall 52 of the ring 28 for fixing.
  • the diameter of the membrane 74 is more particularly chosen so that the sealing portion 96 bears radially outwards against the inner edge of the upper wall 52, which thus constitutes the annular face 98, when the face 76 of contact is pressed against the sieve 22.
  • the contact face 76 of the membrane 74 has, at rest, a periphery of convex shape so that the sealing portion 96 is arranged axially above the level of the rest of the face 76 of contact.
  • the contact face 76 here has a convex shape over its entire surface from a central point arranged substantially at the level of the main axis O of the housing 12.
  • the membrane 74 is elastically deformable when the cover 12 is screwed between a start state of partial contact with the sieve 22 when the lid 12 occupies a first position, as shown in figure 9 , and a state of total axial support against the entire surface of the sieve when the lid occupies a second position of, as shown in figure 10 .
  • the second partially screwed position is between the first position and the fully screwed position of the cover 12.
  • the contact face 76 is in contact with the entire screen 22 before the cover 12 is completely screwed on.
  • the membrane 74 is driven in rotation by the lid 12. This provides effective cleaning of the entire surface of the screen 22 and of the contact face 76 of the membrane 74.
  • the deformable section 80 has a lower flexibility than the bending flexibility of the membrane 74 so that the contact face 76 begins to deform before the deformable section 80. Therefore, when screwing the cover, the membrane 74 will first reach its full contact state, then the deformation of the deformable section 80 will absorb the axial displacements of the cover 12.
  • the first position is preferably intermediate between the fully unscrewed position and the second position. This means that in its completely unscrewed position, that is to say when the cover 12 is placed on the base 14 without the screwing having started, as illustrated in figure 8 , the contact face 76 of the membrane 74 is located at a distance above the sieve 22. This allows, for example, a user to use the case 10 by causing cosmetic product to come out on the sieve 22, then to put the lid on 12 on the base 14, for example to prevent a current of air from carrying away the cosmetic product, without the cosmetic product sticking to the membrane 74.
  • the seal 72 and the lid are made of one or more materials which can be treated by the same recycling sector.
  • the lid and the seal 72 are for example made of polypropylene (PP).
  • the cover 12 is first placed on the base 14 without being screwed.
  • the membrane 74 of the seal 72 is arranged at a distance above the screen 22.
  • the deformable section 80 and the membrane 74 are in a state of rest.
  • the cover 12 begins to be screwed by rotation around the main axis O with respect to the base 14.
  • the cover 12 moves axially in the direction of the base 14 until it reaches the first position in which the membrane 74 comes into contact with the screen 22, as shown in figure 9 .
  • the contact face 76 is in contact with the screen 22 by a central point 100 located along the main axis O.
  • the sealing portion 96 of the membrane 74 is not yet in sealed contact with the annular face 98 of the base 14. Thus, air is still likely to pass between the cavity 16 and the 'outside.
  • the contact area between the contact face 76 and the screen 22 increases progressively.
  • the contact area here has the shape of a disk, the diameter of which increases as the cover 12 approaches the screen 22.
  • an annular zone of the screen 22, which surrounds the contact area remains free. Of the air is so still capable of circulating between the inside and the outside of the cavity 16 through this free annular zone.
  • the volume of the chamber 78 decreases as the membrane 74 deforms in bending.
  • the cover 12 reaches its second position, as shown in figure 10 .
  • the contact face 76 then reaches its state of total axial support before the cover 12 reaches its fully screwed position.
  • the sealing portion 96 is then in sealed contact with the annular face 98 of the base 14.
  • the cavity 16 is therefore closed in a sealed manner by the membrane 74.
  • the contact face 76 is then pressed axially against the entire surface of the screen 22.
  • the deformable section 80 is only slightly, if at all, deformed axially.
  • Cover 12 is thus rotated around its main axis O until it reaches its fully screwed position on base 14, as shown in figure 11 . Between the second position, shown in figure 10 , and the fully tightened position, shown in figure 11 , the cover 12 can for example rotate through an angle of rotation of between a quarter turn and two turns. Of course, the greater the angle of rotation, the more effective the cleaning will be.
  • the cover 12 is still approaching the sieve 22.
  • the deformation of the deformable section 80 makes it possible to slide cover 12 axially towards screen 22 until it is fully screwed in without the pressure of contact face 76 against screen 22 being substantially increased.
  • the volume of chamber 78 then becomes minimal, but not zero, membrane 74 still being at a distance from upper wall 68 of cover 12 in this fully screwed position.
  • the fully screwed position is for example stopped when a lug 102 carried by one of the cover 12 or the base 24 is fitted elastically in a notch 104 carried by the other of the cover 12 or the base 24.
  • the lug 102 is here made in relief at the bottom of the inner face of the cylindrical wall 70 of the cover 12, below the thread 71 as shown in figure 4 .
  • the notch 104 is here made at the bottom of the outer face of the cylindrical wall of the base, below the thread 34, as shown in picture 3 .
  • the housing 10 is then closed in a sealed manner.
  • the seal 71 is configured so that, when unscrewing, the periphery of the face 76 of contact begins by deviating axially from the screen 22 to release a peripheral zone of the screen 22. A complementary inner zone of the screen 22 of said peripheral zone remains entirely in contact with the face 76 of contact.
  • the sealing portion 96 is separated from its bearing face before or simultaneously at the beginning of the separation of the periphery of the contact face 76 from the peripheral zone of the screen 22 to create an air passage gap towards inside the cavity 16 through said peripheral zone.

Abstract

L'invention concerne un boîtier (10) pour produit cosmétique pulvérulent comportant :
- une base (14) comportant une cavité (16) débouchant axialement par une ouverture (18) dans une cuvette (20) ;
- un tamis (22) agencé dans l'ouverture (18) ;
- un couvercle (12) de fermeture qui est destiné à être vissé sur la base (14) entre une position totalement dévissée et une position totalement vissée dans laquelle il est rapproché axialement de l'ouverture (18) ;
- un joint (72) d'étanchéité fixé au couvercle (12) et comportant une membrane (74) qui comporte une face (76) de contact sur toute la surface du tamis (22) ;
caractérisé en ce que la face (76) de contact la membrane (74) est déformable élastiquement en flexion pour que la face (76) de contact épouse la forme du tamis (22) pendant le vissage du couvercle (12), la face (76) de contact présentant des éléments de relief.

Figure imgaf001
Figure imgaf002
The invention relates to a case (10) for a powdery cosmetic product comprising:
- a base (14) comprising a cavity (16) emerging axially via an opening (18) in a bowl (20);
- a sieve (22) arranged in the opening (18);
- a closure cover (12) which is intended to be screwed onto the base (14) between a fully unscrewed position and a fully screwed-in position in which it is brought axially closer to the opening (18);
- a seal (72) attached to the cover (12) and comprising a membrane (74) which has a face (76) of contact over the entire surface of the screen (22);
characterized in that the face (76) of contact with the membrane (74) is elastically deformable in bending so that the face (76) of contact matches the shape of the screen (22) during the screwing of the lid (12), the face ( 76) contact with relief elements.
Figure imgaf001
Figure imgaf002

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention concerne un boîtier pour produit cosmétique pulvérulent comportant :

  • une base comportant une cavité de réception dudit produit, la cavité débouchant axialement par une ouverture ;
  • un tamis agencé dans l'ouverture ;
  • un couvercle de fermeture qui est destiné à être vissé sur la base entre une position totalement dévissée et une position totalement vissée dans laquelle il est rapproché axialement de l'ouverture pour permettre sa fermeture étanche ;
  • un joint d'étanchéité fixée au couvercle par une extrémité supérieure qui comporte :
    • -- une section latérale déformable élastiquement selon une direction axiale;
    • -- une membrane qui est fixée à une extrémité inférieure de la section déformable et qui comporte une face de contact destinée à être en appui sur toute la surface du tamis ;
    • -- une chambre délimitée entre le couvercle et la membrane.
The invention relates to a case for a powdery cosmetic product comprising:
  • a base comprising a cavity for receiving said product, the cavity emerging axially through an opening;
  • a sieve arranged in the opening;
  • a closure cover which is intended to be screwed onto the base between a fully unscrewed position and a fully screwed-in position in which it is axially brought closer to the opening to allow its leaktight closure;
  • a seal fixed to the cover by an upper end which comprises:
    • -- an elastically deformable side section in an axial direction;
    • - a membrane which is fixed to a lower end of the deformable section and which has a contact face intended to rest on the entire surface of the screen;
    • -- a chamber defined between the lid and the membrane.

Arrière-plan techniqueTechnical background

On connaît de l'état de la technique différents exemples de conception de boîtier destiné à recevoir un produit cosmétique pulvérulent, tel que de la poudre libre ou autres produits similaires utilisés pour se maquiller.Known from the state of the art various examples of housing design intended to receive a powdery cosmetic product, such as loose powder or other similar products used to make up.

Selon une conception connue, le boîtier comporte une base comprenant une cavité destinée à contenir un produit cosmétique pulvérulent, un tamis qui est agencé au niveau de l'ouverture de la cavité et à travers des orifices duquel le produit cosmétique est déchargé en vue de son utilisation.According to a known design, the case comprises a base comprising a cavity intended to contain a powdery cosmetic product, a sieve which is arranged at the level of the opening of the cavity and through orifices from which the cosmetic product is discharged for use.

Un tel boîtier a notamment pour inconvénient de présenter une dispersion du produit cosmétique pulvérulent à travers les multiples orifices du tamis, autrement dit un déchargement incontrôlé dudit produit hors de la cavité formant réservoir.Such a box has the particular disadvantage of presenting a dispersion of the powdery cosmetic product through the multiple orifices of the sieve, in other words an uncontrolled discharge of said product out of the cavity forming the reservoir.

La dispersion du produit cosmétique à travers le tamis est susceptible de se produire d'une part pendant le transport du boîtier en position fermée et, d'autre part, pendant l'utilisation du boîtier en position ouverte. Lors du transport, la dispersion du produit cosmétique est limitée par un couvercle venant recouvrir en position fermée le tamis.The dispersion of the cosmetic product through the sieve is likely to occur on the one hand during transport of the case in the closed position and, on the other hand, during use of the case in the open position. During transport, the dispersion of the cosmetic product is limited by a lid covering the sieve in the closed position.

Pour limiter une telle dispersion lors du transport, il est notamment connu d'agencer au-dessus du tamis un applicateur - typiquement une éponge - de manière qu'au moins une partie du produit cosmétique dispersé à travers les orifices soit capté par l'éponge.To limit such dispersion during transport, it is in particular known to arrange above the sieve an applicator - typically a sponge - so that at least part of the cosmetic product dispersed through the orifices is picked up by the sponge. .

Toutefois, l'éponge n'empêche pas totalement la dispersion du produit cosmétique pulvérulent hors de la cavité ce qui pose un problème de propreté du boîtier.However, the sponge does not completely prevent the powdery cosmetic product from dispersing out of the cavity, which poses a problem of cleanliness of the case.

Pour obtenir une fermeture étanche du boîtier, l'éponge est donc serrée fortement contre des parois du boîtier. Cependant, lors de l'extraction de l'éponge, il se produit une aspiration, par effet ventouse, du produit cosmétique pulvérulent à travers le tamis. Ainsi, il est impossible d'ouvrir le boîtier sans répandre le produit cosmétique pulvérulent à l'extérieur de sa cavité.To obtain tight closure of the case, the sponge is therefore tightly pressed against the walls of the case. However, during the extraction of the sponge, there is an aspiration, by suction cup effect, of the pulverulent cosmetic product through the sieve. Thus, it is impossible to open the case without spreading the powdery cosmetic product outside its cavity.

De plus, l'éponge comporte ensuite sur sa face en contact avec la grille une quantité souvent excessive de produit cosmétique de sorte que l'éponge saturée est alors difficilement utilisable pour se maquiller.In addition, the sponge then has on its face in contact with the grid an often excessive amount of cosmetic product so that the saturated sponge is then difficult to use for applying makeup.

Pour tenter de remédier au problème de la dispersion lors du transport, il est aussi connu d'utiliser un bouchon, par exemple solidaire du couvercle du boîtier. Un tel bouchon est configuré pour venir recouvrir le tamis en position fermée du boîtier de manière à l'isoler et à éviter ainsi que le produit cosmétique pulvérulent ne puisse se disperser.In an attempt to remedy the problem of dispersion during transport, it is also known to use a stopper, for example integral with the lid of the case. Such a stopper is configured to coming to cover the sieve in the closed position of the casing so as to isolate it and thus to prevent the powdery cosmetic product from being able to disperse.

Toutefois, après utilisation du boîtier, le tamis est recouvert de produit cosmétique pulvérulent. Or un tel bouchon ne permet pas de nettoyer le tamis en réintroduisant le produit cosmétique pulvérulent à l'intérieur de la cavité.However, after use of the case, the sieve is covered with powdery cosmetic product. However, such a plug does not make it possible to clean the screen by reintroducing the powdery cosmetic product inside the cavity.

Dès lors du produit cosmétique pulvérulent se retrouve dans l'espace compris entre le tamis et le bouchon, ledit produit cosmétique vient par conséquent recouvrir la surface du bouchon, de la même manière que la face d'une éponge selon l'exemple précédent. Or, le produit cosmétique présent sur la surface du bouchon est ensuite susceptible de se disperser partout après l'ouverture du couvercle, en particulier de venir salir le boîtier, les mains de l'utilisatrice, etc.When the powdery cosmetic product is found in the space between the sieve and the cap, said cosmetic product consequently covers the surface of the cap, in the same way as the face of a sponge according to the previous example. However, the cosmetic product present on the surface of the stopper is then liable to disperse everywhere after the opening of the lid, in particular to soil the case, the hands of the user, etc.

L'une des conséquences de cette dispersion du produit cosmétique pulvérulent en utilisation, comme pendant le transport, est finalement le manque de propreté du boîtier. Or, un tel défaut de propreté du boîtier est particulièrement mal perçu sur le plan qualitatif, c'est-à-dire déceptif pour une utilisatrice.One of the consequences of this dispersion of the pulverulent cosmetic product in use, as during transport, is ultimately the lack of cleanliness of the case. However, such a lack of cleanliness of the case is particularly badly perceived on the qualitative level, that is to say deceptive for a user.

On comprendra la manipulation d'un boîtier souillé de produit cosmétique pulvérulent ainsi dispersé risque de salir les mains voire aussi de salir l'intérieur d'un sac dans lequel serait transporté un tel boîtier.It will be understood that the handling of a container stained with powdery cosmetic product thus dispersed risks soiling the hands or even soiling the inside of a bag in which such a container would be transported.

Pour résoudre ce problème, on a déjà proposé d'utiliser un bouchon rigide fixé au couvercle et muni d'ailettes qui viennent racler le tamis lors du vissage du couvercle. Le tamis utilisé est un tamis rigide.To solve this problem, it has already been proposed to use a rigid stopper fixed to the cover and fitted with fins which scrape the sieve when the cover is screwed on. The sieve used is a rigid sieve.

Cependant, un tel bouchon rigide ne permet pas d'obtenir un nettoyage satisfaisant du tamis car dès lors que les ailettes sont en contact étroit avec le tamis, elles forment une butée qui empêche de serrer davantage le couvercle.However, such a rigid stopper does not make it possible to obtain satisfactory cleaning of the sieve because when the fins are in close contact with the sieve, they form a stop which prevents the lid from being tightened further.

En outre, un tel agencement implique de dimensionner et de positionner très précisément les pièces les unes par rapport aux autres pour permettre de fixer correctement le couvercle tout en bénéficiant de l'effet de raclage des ailettes.In addition, such an arrangement involves sizing and positioning the parts very precisely relative to each other to allow the cover to be fixed correctly while benefiting from the scraping effect of the fins.

Une telle solution est donc complexe et onéreuse à mettre en œuvre.Such a solution is therefore complex and costly to implement.

Résumé de l'inventionSummary of the invention

L'invention propose un boîtier pour produit cosmétique pulvérulent comportant :

  • une base comportant une cavité de réception dudit produit, la cavité débouchant axialement par une ouverture ;
  • un tamis agencé dans l'ouverture ;
  • un couvercle de fermeture qui est destiné à être vissé sur la base entre une position totalement dévissée et une position totalement vissée dans laquelle il est rapproché axialement de l'ouverture pour permettre sa fermeture étanche ;
  • un joint d'étanchéité fixée au couvercle par une extrémité supérieure qui comporte :
    • -- une section latérale déformable élastiquement selon une direction axiale;
    • -- une membrane qui est fixée à une extrémité inférieure de la section déformable et qui comporte une face de contact destinée à être en appui sur toute la surface du tamis ;
    • -- une chambre délimitée entre le couvercle et la membrane.
The invention proposes a case for a powdery cosmetic product comprising:
  • a base comprising a cavity for receiving said product, the cavity emerging axially through an opening;
  • a sieve arranged in the opening;
  • a closure cover which is intended to be screwed onto the base between a fully unscrewed position and a fully screwed-in position in which it is axially brought closer to the opening to allow its leaktight closure;
  • a seal fixed to the cover by an upper end which comprises:
    • -- an elastically deformable side section in an axial direction;
    • - a membrane which is fixed to a lower end of the deformable section and which has a contact face intended to rest on the entire surface of the screen;
    • -- a chamber defined between the lid and the membrane.

Selon les enseignements de l'invention, le boîtier est caractérisé en ce que la face de contact la membrane est déformable élastiquement en flexion pour que la face de contact épouse la forme du tamis pendant le vissage du couvercle, la face de contact présentant des éléments de relief.According to the teachings of the invention, the housing is characterized in that the contact face the membrane is elastically deformable in bending so that the contact face matches the shape of the sieve during the screwing of the lid, the contact face having elements relief.

Selon un autre aspect de l'invention, la face de contact présente une forme différente entre la position totalement dévissée du couvercle et la position totalement vissée du couvercle.According to another aspect of the invention, the contact face has a different shape between the fully unscrewed position of the lid and the fully screwed position of the lid.

Selon un autre aspect de l'invention, la membrane est déformable élastiquement en flexion lors du vissage du couvercle entre un état de contact partiel de la face de contact avec le tamis lorsque le couvercle occupe une première position et un état d'appui axial total de la face de contact contre toute la surface du tamis lorsque le couvercle occupe une deuxième position.According to another aspect of the invention, the membrane is elastically deformable in bending when screwing the cover between a state of partial contact of the contact face with the sieve when the cover occupies a first position and a state of total axial support. of the contact face against the entire surface of the sieve when the cover occupies a second position.

Selon un autre aspect de l'invention, lors du vissage, la face de contact atteint son état d'appui axial total avant que le couvercle n'atteigne sa position totalement vissée, la déformation de la section déformable permettant un coulissement axial du couvercle vers le tamis jusqu'à sa position totalement vissée.According to another aspect of the invention, during screwing, the contact face reaches its state of total axial support before the cover reaches its fully screwed position, the deformation of the deformable section allowing axial sliding of the cover towards the sieve to its fully screwed-in position.

Selon un autre aspect de l'invention, une portion d'étanchéité annulaire de la membrane, qui entoure la face de contact, est destinée à venir en contact étanche avec une face annulaire de la cuvette en position totalement vissée.According to another aspect of the invention, an annular sealing portion of the membrane, which surrounds the contact face, is intended to come into sealed contact with an annular face of the bowl in the fully screwed position.

Selon un autre aspect de l'invention, le joint est configuré pour que, lors du dévissage, une périphérie de la face de contact commence par s'écarter axialement du tamis pour libérer une zone périphérique du tamis, une zone intérieure complémentaire de ladite zone périphérique demeurant entièrement en contact avec la face de contact.According to another aspect of the invention, the joint is configured so that, during unscrewing, a periphery of the contact face begins by diverging axially from the sieve to release a peripheral zone of the sieve, an interior zone complementary to said zone peripheral remaining fully in contact with the contact face.

Selon un autre aspect de l'invention, le joint est configuré pour que la portion d'étanchéité soit écartée de sa face d'appui avant ou simultanément au commencement de l'écartement de la périphérie de la face de contact de la zone périphérique du tamis pour créer un interstice de passage de l'air vers l'intérieur de la cavité à travers ladite zone périphérique.According to another aspect of the invention, the seal is configured so that the sealing portion is moved away from its front bearing face or simultaneously at the beginning of the separation of the periphery of the contact face from the peripheral zone of the sieve to create a gap for the passage of air towards the interior of the cavity through said peripheral zone.

Selon un autre aspect de l'invention, la face de contact du joint présente, dans un état de repos de la membrane, une périphérie de forme convexe.According to another aspect of the invention, the contact face of the seal has, in a state of rest of the membrane, a periphery of convex shape.

Selon un autre aspect de l'invention, dans un état de repos de la membrane, la face de contact présente une forme convexe sur toute sa surface depuis un point central agencé sensiblement au niveau d'un axe central du tamis.According to another aspect of the invention, in a state of rest of the membrane, the contact face has a convex shape over its entire surface from a central point arranged substantially at the level of a central axis of the sieve.

Selon un autre aspect de l'invention, la section déformable élastiquement est formée par un soufflet annulaire qui entoure la chambre.According to another aspect of the invention, the elastically deformable section is formed by an annular bellows which surrounds the chamber.

Selon un autre aspect de l'invention, la section déformable présente une souplesse inférieure à celle de la membrane de manière que la face de contact commence à se déformer en flexion avant la section de fixation.According to another aspect of the invention, the deformable section has a lower flexibility than that of the membrane so that the contact face begins to deform in bending before the attachment section.

Selon un autre aspect de l'invention, le joint est réalisé en une seule pièce.According to another aspect of the invention, the seal is made in one piece.

Selon un autre aspect de l'invention, le joint et le couvercle sont réalisés en un même matériau.According to another aspect of the invention, the gasket and the cover are made of the same material.

Selon un autre aspect de l'invention, les éléments de relief sont répartis régulièrement sur toute la surface de la face de contact.According to another aspect of the invention, the elements in relief are regularly distributed over the entire surface of the contact face.

Selon un autre aspect de l'invention, les éléments de reliefs sont des picots.According to another aspect of the invention, the relief elements are pins.

Brève description des figuresBrief description of figures

D'autres caractéristiques et avantages de l'invention apparaitront au cours de la lecture de la description détaillée qui va suivre pour la compréhension de laquelle on se reportera aux dessins annexés décrits brièvement ci-dessous.

  • La figure 1 est une vue en perspective d'un boîtier réalisé selon les enseignements de l'invention, le boîtier occupant une position fermée.
  • La figure 2 est une vue en perspective du boîtier de la figure 1, le boîtier occupant une position ouverte.
  • La figure 3 est une vue en perspective éclatée qui représente les différents composants d'une base du boîtier de la figure 1.
  • La figure 4 est une vue en perspective qui représente le couvercle du boîtier de la figure 1.
  • La figure 5 est une vue éclatée du couvercle de la figure 4 et d'un joint qui l'équipe.
  • La figure 6 est une vue similaire à celle de la figure 5 qui représente le couvercle et le joint d'un autre angle de vue.
  • La figure 7 est une vue en coupe selon le plan de coupe 7-7 de la figure 5 qui représente le joint du couvercle à plus grande échelle.
  • La figure 8 est une vue en coupe axiale qui représente le boîtier de la figure 1 lorsque le couvercle occupe une position totalement dévissée dans laquelle il est posé sur sa base.
  • La figure 9 est une vue similaire à celle de la figure 8 dans laquelle le couvercle occupe une première position dans laquelle il est vissé partiellement.
  • La figure 10 est une vue similaire à celle de la figure 8 dans laquelle le couvercle occupe une deuxième position dans laquelle il est vissé partiellement.
  • La figure 11 est une vue similaire à celle de la figure 8 dans laquelle le couvercle occupe une position totalement vissée sur la base.
Other characteristics and advantages of the invention will appear during the reading of the detailed description which will follow for the understanding of which reference will be made to the appended drawings described briefly below.
  • Figure 1 is a perspective view of a box made according to the teachings of the invention, the box occupying a closed position.
  • There figure 2 is a perspective view of the housing of Figure 1, the housing occupying an open position.
  • There picture 3 is an exploded perspective view showing the various components of a base of the Figure 1 housing.
  • There figure 4 is a perspective view showing the cover of the case of Figure 1.
  • There figure 5 is an exploded view of the cover of the figure 4 and a joint that equips it.
  • There figure 6 is a view similar to that of the figure 5 which represents the lid and the joint from another angle of view.
  • There figure 7 is a sectional view according to section plan 7-7 of the figure 5 which represents the seal of the lid on a larger scale.
  • There figure 8 is an axial sectional view which shows the case of FIG. 1 when the cover occupies a totally unscrewed position in which it is placed on its base.
  • There figure 9 is a view similar to that of the figure 8 wherein the cover occupies a first position in which it is partially screwed.
  • There figure 10 is a view similar to that of the figure 8 wherein the cover occupies a second position in which it is partially screwed.
  • There figure 11 is a view similar to that of the figure 8 wherein the lid occupies a fully screwed position on the base.

Description détaillée de l'inventionDetailed description of the invention

Dans la suite de la description, des éléments présentant une structure identique ou des fonctions analogues seront désignés par une même référence.In the rest of the description, elements having an identical structure or analogous functions will be designated by the same reference.

Dans la suite de la description, on adoptera à titre non limitatif une orientation axiale parallèles à un axe principal du boîtier, et indiquée par la flèche "A" qui est dirigée de bas en haut. On adoptera aussi des orientations radiales qui s'étendent radialement par rapport à l'axe principal du boîtier, de l'intérieur vers l'extérieur. On adoptera aussi des orientations tangentielles qui sont orthogonales aux orientations axiale et radiale.In the remainder of the description, an axial orientation parallel to a main axis of the housing, and indicated by the arrow "A" which is directed from bottom to top, will be adopted without limitation. Radial orientations will also be adopted which extend radially with respect to the main axis of the case, from the inside outwards. We will also adopt tangential orientations which are orthogonal to the axial and radial orientations.

Dans les modes de réalisation du boîtier représentés sur les figures, ledit axe principal constitue un axe de rotation pour le vissage du couvercle sur une base du boîtier.In the embodiments of the case shown in the figures, said main axis constitutes an axis of rotation for screwing the cover onto a base of the case.

Les termes "haut" et "bas", "dessus" et "dessous", "supérieur" et "inférieur" sont utilisés à titre de repère géométrique en rapport avec l'orientation axiale telle que représentée sur les figures et indépendamment de la direction de la gravité terrestre.The terms "top" and "bottom", "above" and "below", "upper" and "lower" are used as a geometric reference in relation to the axial orientation as represented in the figures and independently of the direction of Earth's gravity.

On a représenté à la figure 1 un boîtier 10 pour un produit cosmétique pulvérulent en position fermée et, à la figure 2, le même boîtier 10 en position ouverte.There is shown in Figure 1 a housing 10 for a powdery cosmetic product in the closed position and, at the figure 2 , the same housing 10 in the open position.

Un produit cosmétique pulvérulent est par exemple constitué par de la poudre libre destinée à être utilisée pour se maquiller. Il s'agit par exemple d'un produit cosmétique pulvérulent appliqué sur le visage à l'aide d'un applicateur (non représenté), en particulier au moyen d'un pinceau ou encore d'une éponge (ou tout autre moyen équivalent).A pulverulent cosmetic product consists for example of loose powder intended to be used for applying make-up. It is for example a powdery cosmetic product applied to the face using an applicator (not shown), in particular using a brush or even a sponge (or any other equivalent means) .

De préférence, le produit cosmétique pulvérulent est destiné à être appliqué au moyen d'un pinceau qui est ici distinct dudit boîtier 10.Preferably, the pulverulent cosmetic product is intended to be applied by means of a brush which here is separate from said box 10.

Le boîtier 10 pour produit cosmétique pulvérulent comporte au moins un couvercle 12 et une base 14 qui sont montés mobiles l'un par rapport à l'autre entre au moins une position fermée, représentée à la figure 1, et une position ouverte du boîtier 10, représentée à la figure 2, dans laquelle le couvercle 12 est ôté de la base 14.The casing 10 for powdery cosmetic product comprises at least one lid 12 and a base 14 which are mounted to move relative to each other between at least one closed position, shown in FIG. 1, and an open position of the casing 10 , represented at the figure 2 , in which the cover 12 is removed from the base 14.

Le couvercle 12 est destiné à être vissé sur un filetage 34 associé de la base 14. Le boîtier 10 présente un axe O principal déterminant la direction axiale. La base 14 est située en bas et le couvercle 12 en haut. Le couvercle 12 est plus particulièrement destiné à être vissé par rotation autour de l'axe O principal sur la base 14.Cover 12 is intended to be screwed onto an associated thread 34 of base 14. Housing 10 has a main axis O determining the axial direction. The base 14 is located at the bottom and the lid 12 at the top. The lid 12 is more particularly intended to be screwed by rotation around the main axis O on the base 14.

Le couvercle 12 et la base 14 présentent une forme complémentaire conférant au boîtier 10 son esthétique, notamment en position fermée.The lid 12 and the base 14 have a complementary shape giving the case 10 its aesthetics, especially in the closed position.

De manière non limitative, le boîtier 10 présente une forme générale cylindrique de révolution centrée sur ledit axe O principal.In a non-limiting way, the housing 10 has a generally cylindrical shape of revolution centered on said main axis O.

En variante, le boîtier pourrait présenter une autre forme générale notamment parallélépipédique, en particulier une forme carrée ou rectangulaire.As a variant, the case could have another general shape, in particular parallelepiped, in particular a square or rectangular shape.

Avantageusement, le boîtier 10 est un boîtier de type « compact », c'est-à-dire dimensionné de manière à pouvoir être transporté, notamment mais non exclusivement dans un sac, par exemple le sac à main d'une utilisatrice.Advantageously, the case 10 is a case of the “compact” type, that is to say dimensioned so as to be able to be transported, in particular but not exclusively in a bag, for example the handbag of a user.

De préférence, le couvercle 12 est amovible par rapport à la base 14, c'est-à-dire que le couvercle 12 est séparé de la base 14 en position ouverte du boîtier 10 comme représenté à la figure 2.Preferably, the cover 12 is removable relative to the base 14, that is to say that the cover 12 is separated from the base 14 in the open position of the housing 10 as shown in figure 2 .

En variante, le couvercle pourrait être relié à la base par l'intermédiaire d'une attache souple permettant son vissage et son dévissage de la base.As a variant, the cover could be connected to the base by means of a flexible fastener allowing it to be screwed on and unscrewed from the base.

La base 14 comporte une cavité 16 de réception dudit produit, visible par exemple à la figure 8. La cavité 16 débouche axialement vers le haut par une ouverture 18 dans une cuvette 20 ouverte axialement vers le haut, à l'extérieur de la base.The base 14 comprises a cavity 16 for receiving said product, visible for example at the figure 8 . The cavity 16 opens axially upwards through an opening 18 in a bowl 20 open axially upwards, outside the base.

Un tamis 22 équipé d'orifices de passage du produit est agencé dans l'ouverture 18 pour former une délimitation entre la cavité 16 et la cuvette 20.A sieve 22 equipped with orifices for passing the product is arranged in the opening 18 to form a delimitation between the cavity 16 and the bowl 20.

Ainsi, l'invention est applicable à un boîtier 10 comportant principalement la cavité 16 de réception du produit cosmétique délimitée vers le haut par le tamis 22 et qui débouche dans une cuvette 20.Thus, the invention is applicable to a housing 10 mainly comprising the cavity 16 for receiving the cosmetic product delimited at the top by the sieve 22 and which opens into a basin 20.

Comme représenté plus en détails à la figure 3, dans l'exemple de réalisation représenté aux figures, la base 14 comporte, à titre non limitatif, plusieurs composants assemblés.As shown in more detail at picture 3 , in the embodiment shown in the figures, the base 14 comprises, without limitation, several assembled components.

La base 14 comporte ici un socle 24, un récipient 26 et une bague 28 de fixation du récipient 26 dans le socle 24. Cette configuration permet de remplacer le récipient 26 lorsqu'il est vide ou lorsqu'on souhaite changer de produit cosmétique de manière propre et rapide, tout en conservant le reste du boîtier 10. Cette configuration est donc à la fois économique et écologique.The base 14 here comprises a base 24, a container 26 and a ring 28 for fixing the container 26 in the base 24. This configuration makes it possible to replace the container 26 when it is empty or when it is desired to change the cosmetic product in a clean and fast, while retaining the rest of the housing 10. This configuration is therefore both economical and ecological.

A cet effet, le socle 24 comporte un logement 29. Le logement 29 est divisé en deux tronçons. Un tronçon inférieur 30 du logement 29 est destiné à recevoir le récipient 26, tandis que le tronçon supérieur du logement 29 est destiné à rester libre pour recevoir la cuvette 20 permettant de prélever du produit cosmétique pulvérulent présent le tamis 22 à l'aide d'un applicateur sans risque d'en répandre partout.To this end, the base 24 comprises a housing 29. The housing 29 is divided into two sections. A lower section 30 of the housing 29 is intended to receive the container 26, while the upper section of the housing 29 is intended to remain free to receive the basin 20 allowing the powdery cosmetic product present in the sieve 22 to be removed using a an applicator without the risk of spreading it everywhere.

Le tronçon supérieur du logement 29 est délimité radialement par une paroi cylindrique 32. La paroi cylindrique 32 comporte sur sa face externe le filetage 34 pour le vissage du couvercle 12. La paroi cylindrique 32 comporte un bord 35 d'extrémité supérieure libre.The upper section of the housing 29 is delimited radially by a cylindrical wall 32. The cylindrical wall 32 has on its outer face the thread 34 for screwing the cover 12. The cylindrical wall 32 has an edge 35 of free upper end.

Le tronçon supérieur du logement 29 est délimité du tronçon 30 inférieur par une face 36 de portée annulaire qui est tournée axialement vers le haut.The upper section of the housing 29 is delimited from the lower section 30 by a face 36 of annular bearing which faces axially upwards.

Le récipient 26 comporte ici la cavité 16 qui est délimitée radialement par une paroi 38 périphérique et axialement vers le bas par un fond 40, visible par exemple à la figure 8. Le tamis 22 est destiné à être fixé sur un bord 42 d'extrémité supérieure de la paroi 38 périphérique.The container 26 here comprises the cavity 16 which is delimited radially by a peripheral wall 38 and axially downwards by a bottom 40, visible for example at the figure 8 . The screen 22 is intended to be fixed on an edge 42 of the upper end of the peripheral wall 38 .

Dans le mode de réalisation représenté aux figures, au moins l'une parmi la paroi 38 périphérique et le fond 40 est réalisée en un matériau suffisamment souple pour qu'un utilisateur puisse soulever le fond 40 afin de l'amener jusqu'au contact du tamis 22 par simple pression sur le fond 40 avec un doigt de la main. A cet effet, le logement 29 du socle 24 est fermé vers le bas par un fond 41 qui est ajouré d'une fenêtre 43 d'accès au fond 40 du récipient 26.In the embodiment shown in the figures, at least one of the peripheral wall 38 and the bottom 40 is made of a sufficiently flexible material for a user to be able to lift the bottom 40 in order to bring it into contact with the sieve 22 by simple pressure on the bottom 40 with a finger of the hand. For this purpose, the housing 29 of the base 24 is closed at the bottom by a bottom 41 which is perforated with a window 43 for access to the bottom 40 of the container 26.

Un tel agencement permet ainsi de faire passer du produit cosmétique au-dessus du tamis 22 en soulevant le fond 40, sans avoir à renverser le récipient 26 pour faire tomber le produit cosmétique.Such an arrangement thus makes it possible to pass the cosmetic product over the sieve 22 by lifting the bottom 40, without having to reverse the container 26 to cause the cosmetic product to fall.

Le tamis 22 est ici un tamis souple qui est par exemple réalisé sous la forme d'une grille, en nylon ou autre matériau, constituée d'un ensemble de mailles délimitant chacune un des orifices de passage du produit cosmétique pulvérulent hors de la cavité.The sieve 22 is here a flexible sieve which is for example made in the form of a grid, made of nylon or other material, consisting of a set of meshes each delimiting one of the orifices through which the powdery cosmetic product passes out of the cavity.

Pour permettre de conserver le tamis 22 tendu en travers de l'ouverture 18, le tamis 22 est porté par un cadre 44 de forme complémentaire de celle du contour de l'ouverture 18, ici de forme circulaire, centré sur l'axe O principal. Le cadre 44 est réalisé dans un matériau beaucoup plus rigide que la paroi 38 périphérique et/ou le fond 40 du récipient 26.To keep the sieve 22 stretched across the opening 18, the sieve 22 is carried by a frame 44 of complementary shape to that of the outline of the opening 18, here of circular shape, centered on the main axis O . The frame 44 is made of a much more rigid material than the peripheral wall 38 and/or the bottom 40 of the container 26.

Le cadre 44 est par exemple réalisé en un matériau plastique surmoulé sur la périphérie du tamis 22.The frame 44 is for example made of a plastic material overmoulded on the periphery of the sieve 22.

Le cadre 44 est monté par emboîtement élastique sur le bord 42 supérieur du récipient 26. Ainsi, le récipient 26 et le tamis 22 sont fixés l'un à l'autre pour former un unique composant facile à loger dans le socle 24 et à remplacer. Le cadre 44 permet de conférer à l'extrémité supérieure de la paroi 38 périphérique une plus grande rigidité. Le récipient 26 conserve ainsi une ouverture 18 de même forme, ici circulaire, en permanence durant l'utilisation du boîtier 10.The frame 44 is mounted by elastic interlocking on the upper edge 42 of the container 26. Thus, the container 26 and the screen 22 are fixed to each other to form a single component easy to house in the base 24 and to replace . The frame 44 makes it possible to give the upper end of the peripheral wall 38 greater rigidity. The container 26 thus retains an opening 18 of the same shape, here circular, permanently during the use of the housing 10.

Le récipient 26 comporte en outre un rebord 46 qui entoure l'ouverture 18. Le rebord 46 s'étend en saillie radialement vers l'extérieur depuis la paroi 38 périphérique. Lorsque le récipient 26 est positionné dans son logement 29, il repose par l'intermédiaire de son rebord 46 qui repose sur la face 36 de portée du socle 24, comme représenté à la figure 8.The container 26 further includes a rim 46 which surrounds the opening 18. The rim 46 projects radially outwardly from the peripheral wall 38 . When the container 26 is positioned in its housing 29, it rests via its rim 46 which rests on the bearing face 36 of the base 24, as shown in figure 8 .

Le récipient 26 présentant une structure très souple, il serait compliqué de l'extraire par le haut du logement 29 en exerçant une pression par la fenêtre 43 sans répandre le reste de poudre qu'il contient à l'extérieur. Il est donc préférable de pouvoir le saisir par une partie plus rigide, à savoir par le rebord 46, rendu plus rigide par le cadre 44. Pour permettre de saisir facilement le récipient 26 par le cadre 44 et/ou le rebord 46, la paroi 32 cylindrique du socle 24 comporte au moins deux échancrures 48 radialement opposées qui donnent accès au moins au rebord 46 du récipient 26. Les échancrures 48 sont réalisées dans le bord 35 supérieur de la paroi 32 cylindrique. Elles s'étendent vers le bas jusqu'à la face 36 de portée. Chaque échancrure 48 permet à un utilisateur de saisir le rebord 46 par la pulpe de deux doigts.The container 26 having a very flexible structure, it would be complicated to extract it from the top of the housing 29 by exerting pressure through the window 43 without spreading the rest of the powder that it contains outside. It is therefore preferable to be able to grip it by a more rigid part, namely by the flange 46, made more rigid by the frame 44. To allow the container 26 to be easily gripped by the frame 44 and/or the flange 46, the wall 32 of the cylindrical base 24 comprises at least two radially opposite indentations 48 which give access at least to the rim 46 of the container 26. The indentations 48 are made in the upper edge 35 of the cylindrical wall 32 . They extend down to the bearing face 36. Each notch 48 allows a user to grasp the rim 46 with the pads of two fingers.

La bague 28 de fixation du récipient 26 est fixée par des moyens de fixation démontable dans le logement 29 en serrant le rebord 46 du récipient 26 contre la face 36 de portée. La bague 28 va ainsi maintenir fermement le récipient 26 dans son logement 29.The ring 28 for fixing the container 26 is fixed by removable fixing means in the housing 29 by tightening the rim 46 of the container 26 against the face 36 of the bearing surface. The ring 28 will thus hold the container 26 firmly in its housing 29.

La bague 28 de fixation comporte une paroi 50 périphérique qui présente un diamètre externe légèrement inférieur au diamètre interne de la paroi 32 cylindrique du socle 24 de manière que la bague 28 soit reçue dans le tronçon supérieur du logement 29 avec un jeu radial permettant le montage et le démontage.The fixing ring 28 comprises a peripheral wall 50 which has an external diameter slightly smaller than the internal diameter of the cylindrical wall 32 of the base 24 so that the ring 28 is received in the upper section of the housing 29 with a radial play allowing the assembly and dismantling.

La bague 28 de fixation comporte aussi une paroi 52 supérieure annulaire inclinée en direction de l'ouverture 18 du récipient 26 qui délimite radialement la cuvette 20. La paroi 52 supérieure forme ainsi un entonnoir qui permet de faire glisser le produit cosmétique en direction du tamis 22. La paroi 52 supérieure présente à cet effet un diamètre intérieur qui est sensiblement égal au diamètre du tamis 22.The fixing ring 28 also comprises an upper annular wall 52 inclined in the direction of the opening 18 of the container 26 which radially delimits the bowl 20. The upper wall 52 thus forms a funnel which makes it possible to slide the cosmetic product in the direction of the sieve. 22. The upper wall 52 has for this purpose an internal diameter which is substantially equal to the diameter of the screen 22.

Comme illustré à la figure 8, la paroi 52 supérieure présente une face 54 annulaire inférieure qui est destinée à venir appuyer contre le rebord 46 du récipient 26 lorsque la bague 28 de fixation est montée dans le socle 24. La face 54 annulaire appuie ici sur le rebord 26 par l'intermédiaire du cadre 44 du tamis 22. Ainsi, la bague 28 de fixation maintient fermement le récipient 26 en position dans son logement 29. Le rebord 46 est enserré axialement entre la bague 28 de fixation et la face 36 de portée.As shown in figure 8 , the upper wall 52 has a lower annular face 54 which is intended to press against the rim 46 of the container 26 when the fixing ring 28 is mounted in the base 24. The annular face 54 presses here on the flange 26 via the frame 44 of the sieve 22. Thus, the fixing ring 28 firmly holds the container 26 in position in its housing 29. The flange 46 is clamped axially between the fixing ring 28 and the face 36 of bearing .

La bague 28 de fixation est montée de manière étanche autour du récipient 26. A cet effet, le cadre 44 présente une lèvre 56 souple qui s'étend radialement vers l'extérieur depuis le pourtour du cadre 44. Un bourrelet 57 annulaire de la paroi 52 supérieure de la bague 28 de fixation est destiné à venir en contact serré axialement contre la lèvre 54 pour garantir une bonne étanchéité empêchant le produit cosmétique de passer entre le récipient 26 et la bague 28 de fixation.The fixing ring 28 is mounted in leaktight manner around the container 26. For this purpose, the frame 44 has a flexible lip 56 which extends radially outwards from the periphery of the frame 44. An annular bead 57 of the wall 52 upper ring 28 fixing is intended to come into tight contact axially against the lip 54 to ensure a good seal preventing the cosmetic product to pass between the container 26 and the ring 28 fixing.

La bague 28 de fixation est ici fixée au socle 24 par emboîtement élastique selon une direction axiale. A cet effet, la bague 28 de fixation comporte deux pattes 58 de fixation d'extension axiale élastiquement déformables en flexion. Chaque patte 58 de fixation est munie à son extrémité inférieure libre d'un crampon 60 qui est destiné à être emboîté, ici radialement vers l'extérieur, dans un cran 62 du socle 24. Ainsi, chaque patte 58 de fixation est flexible entre un état d'emboîtement du crampon 60 dans son cran 62, vers lequel elle est rappelée élastiquement, et un état de déboîtement, dans lequel elle est fléchie radialement vers l'intérieur et dans lequel elle est contrainte à l'encontre de l'effort de rappel élastique.The fixing ring 28 is here fixed to the base 24 by elastic interlocking in an axial direction. For this purpose, the fixing ring 28 comprises two axial extension fixing lugs 58 that are elastically deformable in bending. Each fixing lug 58 is provided at its free lower end with a stud 60 which is intended to be fitted, here radially outwards, in a notch 62 of the base 24. Thus, each fixing lug 58 is flexible between a state of interlocking of the stud 60 in its notch 62, towards which it is elastically returned, and a state of disengagement, in which it is bent radially inwards and in which it is constrained against the force of elastic return.

Une partie supérieure des pattes 58 de fixation, assurant la liaison avec le reste de la bague 28, est formée par une partie de la paroi 50 périphérique délimitée, selon la circonférence de la bague 28, par deux fentes 64 axiale qui sont réalisées dans la paroi 50 périphérique et qui débouchent vers le bas. Ces deux fentes 64 favorisent ainsi la flexibilité de chaque patte 58 de fixation.An upper part of the fixing lugs 58, ensuring the connection with the rest of the ring 28, is formed by a part of the peripheral wall 50 delimited, along the circumference of the ring 28, by two axial slots 64 which are made in the peripheral wall 50 and which open downwards. These two slots 64 thus promote the flexibility of each lug 58 for fixing.

Les pattes 58 de fixation sont ici au nombre de deux et elles sont agencés de manière diamétralement opposées par rapport à l'axe O principal du boîtier 10.The fixing lugs 58 are here two in number and they are arranged diametrically opposite with respect to the main axis O of the housing 10.

Les crans 62 sont ici agencés au droit des échancrures 48. Les crans 62 sont plus particulièrement agencés au-dessous de la face 36 de portée. Cette disposition permet à un utilisateur de solliciter les pattes 58 de fixation vers leur état contraint en les sollicitant directement avec leurs doigts à travers les échancrures 48. Ainsi, la bague 28 de fixation est facilement démontable.The notches 62 are here arranged in line with the indentations 48. The notches 62 are more particularly arranged below the face 36 of the bearing surface. This arrangement allows a user to urge the fixing lugs 58 towards their constrained state by urging them directly with their fingers through the indentations 48. Thus, the fixing ring 28 is easily removable.

Pour permettre de positionner correctement la bague 28 de fixation par rapport au socle 24, la partie supérieure de chaque patte 58 de fixation, formée dans la paroi 50 périphérique, comporte une saillie 66 qui s'étend radialement vers l'extérieur et qui est emboîtée axialement avec l'échancrure 48. Ces saillies 66 viennent buter contre le bord 35 supérieur de la paroi 32 cylindrique du socle 24 lorsqu'elles ne sont pas alignées avec une échancrure 48.To allow the fixing ring 28 to be positioned correctly with respect to the base 24, the upper part of each fixing lug 58, formed in the peripheral wall 50, comprises a projection 66 which extends radially outwards and which is fitted axially with the notch 48. These projections 66 abut against the upper edge 35 of the cylindrical wall 32 of the base 24 when they are not aligned with a notch 48.

Les saillies 66 permettent aussi d'immobiliser la bague 28 en rotation autour de l'axe O principal par rapport au socle 24.The projections 66 also make it possible to immobilize the ring 28 in rotation around the main axis O with respect to the base 24.

Le couvercle 12 de fermeture du logement 29 est destiné à être vissé sur le filetage 34 du socle 24 entre une position totalement dévissée, comme représenté à la figure 8, et une position totalement vissée, comme représenté à la figure 11, dans laquelle il est rapproché axialement du tamis 22 pour permettre la fermeture étanche de la cavité 16. Le vissage est réalisé par rotation du couvercle 12 autour de l'axe O principal du boîtier 10.The cover 12 for closing the housing 29 is intended to be screwed onto the thread 34 of the base 24 between a completely unscrewed position, as shown in figure 8 , and a fully screwed position, as shown in figure 11 , in which it is brought axially closer to the sieve 22 to allow the sealing of the cavity 16. The screwing is carried out by rotation of the cover 12 around the main axis O of the housing 10.

Comme représenté aux figures 4 et 5, le couvercle 12 comporte une paroi 68 supérieure depuis laquelle s'étend vers le bas une paroi 70 cylindrique. Une face interne de la paroi 70 cylindrique comporte un filetage 71 complémentaire de celui du socle 24 de manière que le couvercle 12 puisse être vissé au socle 24.As depicted in figure 4 And 5 , the lid 12 has an upper wall 68 from which a cylindrical wall 70 extends downwards. An internal face of the cylindrical wall 70 has a thread 71 complementary to that of the base 24 so that the cover 12 can be screwed to the base 24.

Le couvercle 12 est équipé d'un joint 72 d'étanchéité qui est destiné à obturer de manière étanche l'ouverture 18 en position totalement vissée du couvercle pour empêcher le produit cosmétique de sortir de sa cavité 16.The cover 12 is equipped with a seal 72 which is intended to seal the opening 18 in a fully screwed position of the cover to prevent the cosmetic product from coming out of its cavity 16.

Comme représenté aux figures 4 à 7, le joint 72 d'étanchéité comporte une membrane 74 étanche qui s'étend globalement parallèlement au tamis 22. La membrane 74 comporte une face inférieure qui forme une face 76 de contact destinée à être en appui sur toute la surface du tamis 22 lorsque le couvercle 12 occupe sa position totalement vissée. La membrane 74 présente ici un contour de forme circulaire présentant un diamètre au moins égal à celui du tamis 22.As depicted in figures 4 to 7 , the seal 72 comprises a sealed membrane 74 which extends generally parallel to the screen 22. The membrane 74 has a lower face which forms a contact face 76 intended to rest on the entire surface of the screen 22 when the cover 12 occupies its fully screwed position. The membrane 74 here has an outline of circular shape having a diameter at least equal to that of the sieve 22.

La face 76 de contact est réalisée en un matériau qui ne présente sensiblement pas de porosité à même de retenir ou de stocker des grains de produits cosmétique. La face 76 de contact ne présente notamment pas la structure d'une éponge. Le joint 72 d'étanchéité est réalisé en un matériau élastomère. Le joint 72 d'étanchéité est ici réalisé en une seule pièce, par exemple par moulage.The contact face 76 is made of a material which has substantially no porosity capable of retaining or storing grains of cosmetic products. The contact face 76 in particular does not have the structure of a sponge. The seal 72 is made of an elastomeric material. The seal 72 is here made in one piece, for example by molding.

Lorsque le joint 72 est fixé au couvercle 12, la membrane 74 est agencée à distance de la paroi 50 supérieure de sorte qu'une chambre 78 est délimitée axialement entre le couvercle 12 et la membrane 74. La chambre 78 s'étend au-dessus de sensiblement la totalité de la surface du tamis 22.When the seal 72 is fixed to the cover 12, the membrane 74 is arranged at a distance from the upper wall 50 so that a chamber 78 is delimited axially between the cover 12 and the membrane 74. The chamber 78 extends above of substantially the entire surface of the screen 22.

La membrane 74 est réalisée en un matériau souple. Cette chambre 78 permet à la membrane de se déformer en flexion sous l'effet d'une pression appliquée vers le haut sur la face 76 de contact. La face de contact présente, au repos, une forme différente de celle du tamis 22. La membrane 74 est ainsi déformable élastiquement en flexion pour que la face 76 de contact épouse la forme du tamis 22 pendant le vissage du couvercle 12 comme cela sera expliqué plus en détails par la suite.The membrane 74 is made of a flexible material. This chamber 78 allows the membrane to deform in bending under the effect of a pressure applied upwards on the face 76 of contact. The contact face has, at rest, a shape different from that of the sieve 22. The membrane 74 is thus elastically deformable in bending so that the contact face 76 matches the shape of the sieve 22 during the screwing of the cover 12 as will be explained. in more detail later.

Le joint 72 d'étanchéité comporte une section 80 déformable élastiquement selon une direction axiale qui est fixée à l'intérieur du couvercle 12 par une extrémité supérieure. La membrane 74 est fixée à une extrémité inférieure de la section déformable. La section 80 déformable élastiquement délimite radialement la chambre 78. La membrane 74 est ainsi solidaire en rotation avec le couvercle 12 autour de l'axe O principal.The seal 72 comprises a section 80 elastically deformable in an axial direction which is fixed inside the cover 12 by an upper end. Membrane 74 is attached to a lower end of the deformable section. The elastically deformable section 80 radially delimits the chamber 78. The membrane 74 is thus integral in rotation with the cover 12 around the main axis O.

La section 80 déformable est ici formée par un soufflet annulaire qui entoure la chambre 78. Un bord 82 supérieur du soufflet formant la section 80 déformable est destiné à être en appui axial contre une face inférieure de la paroi 68 supérieure du couvercle 12.The deformable section 80 is here formed by an annular bellows which surrounds the chamber 78. An upper edge 82 of the bellows forming the deformable section 80 is intended to bear axially against an underside of the upper wall 68 of the cover 12.

Pour permettre la fixation du joint 72 sur le couvercle 12, le bord 82 supérieur de la section 80 déformable présente des dents 84 faisant saillie radialement vers l'extérieur. Ces dents 84 sont destinées à être encastrées radialement dans des encoches 86 réalisées dans une cloison 88 circulaire qui s'étend axialement vers le bas depuis la face inférieure de la paroi 68 supérieure du couvercle 12. La cloison 88 circulaire est ici adaptée pour recevoir intérieurement le bord 82 supérieur de la section 80 déformable, avec ou sans jeu. La section 80 déformable est réalisée dans matériau suffisamment souple pour permettre l'emboîtement élastique des dents 84 dans les encoches 86.To allow the attachment of the gasket 72 to the cover 12, the upper edge 82 of the deformable section 80 has teeth 84 projecting radially outwards. These teeth 84 are intended to be embedded radially in notches 86 made in a circular partition 88 which extends axially downwards from the underside of the upper wall 68 of the cover 12. The circular partition 88 is here adapted to receive internally the upper edge 82 of the deformable section 80, with or without clearance. The deformable section 80 is made of a material that is flexible enough to allow the elastic interlocking of the teeth 84 in the notches 86.

Lors du vissage et du dévissage du couvercle 12, le volume de la chambre 78 est destiné à varier en fonction des déformations de la section 80 déformable, d'une part, et des déformations en flexion de la membrane 74, d'autre part. Pour permettre à l'air d'entrer et de sortir de la chambre 78 pour favoriser ces déformations, il est prévu au moins un évent 90 de passage d'air entre la chambre 78 et l'extérieur du joint 72 d'étanchéité. Les évents 90 sont ici réalisés sous la forme de rainures réalisées dans le bord 82 supérieur de la section 80 déformable. Les évents 90 sont agencés en correspondance avec des passages 92 réservés dans la cloison 88 circulaire.When screwing and unscrewing the cover 12, the volume of the chamber 78 is intended to vary according to the deformations of the deformable section 80, on the one hand, and the bending deformations of the membrane 74, on the other hand. To allow air to enter and leave the chamber 78 to promote these deformations, there is provided at least one vent 90 for air passage between the chamber 78 and the outside of the seal 72 sealing. The vents 90 are here made in the form of grooves made in the upper edge 82 of the deformable section 80. The vents 90 are arranged in correspondence with passages 92 reserved in the partition 88 circular.

Comme cela sera expliqué par la suite, la face de contact 76 est destinée à frotter contre le tamis 22 pendant la rotation du couvercle 12. Ce frottement permet de pousser les grains de produit cosmétique à travers les orifices du tamis 22 pour les faire retourner dans la cavité 16. Ainsi, le tamis 22 et la face de contact 76 sont nettoyés et ne comportent pas de produit cosmétique lorsque le couvercle 12 est à nouveau ouvert.As will be explained later, the contact face 76 is intended to rub against the sieve 22 during the rotation of the cover 12. This friction makes it possible to push the grains of cosmetic product through the orifices of the sieve 22 to make them return to the cavity 16. Thus, the screen 22 and the contact face 76 are cleaned and contain no cosmetic product when the cover 12 is opened again.

Pour obtenir cet effet de nettoyage par frottement, la face de contact 76 comporte des éléments de reliefs. Les éléments de reliefs forment une multitude d'aspérités sur la face 76 de contact. Plus particulièrement, ces éléments de relief sont ici formés par une multitude de picots 94, visibles plus en détails à la figure 4.To obtain this effect of cleaning by friction, the contact face 76 comprises relief elements. The relief elements form a multitude of asperities on the face 76 of contact. More particularly, these relief elements are here formed by a multitude of spikes 94, visible in more detail at figure 4 .

Les picots 94 sont ici répartis régulièrement sur toute la face 76 de contact. En variante non représentée de l'invention, les picots sont répartis avec une plus grande densité au centre de la face 76 de contact qu'à sa périphérie.The pins 94 are here distributed regularly over the entire contact face 76. In a variant of the invention, not shown, the pins are distributed with a greater density at the center of the contact face 76 than at its periphery.

Les picots 94 font ici saillies axialement d'une hauteur très inférieure à l'épaisseur de la membrane 74, par exemple de l'ordre du dixième de millimètre.The pins 94 here project axially to a height much lower than the thickness of the membrane 74, for example of the order of a tenth of a millimeter.

Les picots 94 présentent ici tous la même hauteur.The pins 94 here all have the same height.

En variante, les picots peuvent présenter des hauteurs différentes selon leur emplacement.As a variant, the spikes may have different heights depending on their location.

Les picots présentent en outre des dimensions très inférieures au diamètre de la face de contact, par exemple de l'ordre du millimètre, voire du dixième de millimètre. Les picots 94 sont répartis avec une densité importante. Par exemple, l'espace séparant le sommet de deux picots 94 adjacents est compris entre une et deux fois la largeur de la base d'un picot 94.The pins also have dimensions much smaller than the diameter of the contact face, for example of the order of a millimeter, or even a tenth of a millimeter. The spikes 94 are distributed with a high density. For example, the space separating the top of two adjacent pins 94 is between one and two times the width of the base of a pin 94.

De préférence, mais pas obligatoirement, la souplesse en compression de la membrane 74 est très inférieure à sa souplesse en flexion. De même, la souplesse en compression de la membrane 74 est très inférieure à la souplesse en déformation axiale de la section 80 déformable. Cela signifie que lorsque la membrane 74 est appuyée contre le tamis 22, les picots 94 ne sont pas déformés par écrasement. Les picots 94 demeurent donc en relief même lorsque la membrane 74 est appuyée contre le tamis 22. Lorsque le couvercle 12 est appuyé vers le bas, c'est la déformation en flexion de la membrane 74 et la déformation axiale de la section 80 déformable qui absorbent ces efforts.Preferably, but not necessarily, the flexibility in compression of the membrane 74 is much lower than its flexibility in bending. Similarly, the flexibility in compression of the membrane 74 is much lower than the flexibility in axial deformation of the deformable section 80. This means that when the membrane 74 is pressed against the sieve 22, the pins 94 are not deformed by crushing. The pins 94 therefore remain in relief even when the membrane 74 is pressed against the sieve 22. When the cover 12 is pressed downwards, it is the deformation in bending of the membrane 74 and the axial deformation of the deformable section 80 which absorb these forces.

Ceci permet de garantir un nettoyage optimal du tamis 22 tout en évitant de créer une aspiration du produit cosmétique lors du retrait de la membrane 74, comme cela sera expliqué plus en détails par la suite.This makes it possible to guarantee optimal cleaning of the sieve 22 while avoiding creating suction for the cosmetic product when removing the membrane 74, as will be explained in more detail below.

Par ailleurs, la membrane 74 comporte à sa périphérie une portion 96 d'étanchéité annulaire qui entoure la face 76 de contact.Furthermore, the membrane 74 has at its periphery a portion 96 of annular sealing which surrounds the face 76 of contact.

Cette portion 96 d'étanchéité annulaire est ici formée par deux bourrelets annulaires superposés et parallèles qui s'étendent en saillie, radialement vers l'extérieur, depuis un bord périphérique de la membrane 74. La portion 96 d'étanchéité est destinée à venir en contact étanche avec une face 98 annulaire de la base 14 en position totalement vissée du couvercle 12.This annular sealing portion 96 is here formed by two superposed and parallel annular beads which project radially outwards from a peripheral edge of the membrane 74. The sealing portion 96 is intended to come into sealed contact with an annular face 98 of the base 14 in the fully screwed position of the cover 12.

Comme représenté à la figure 11, lorsqu'elle est appuyée contre le tamis 22, la membrane 74 présente un diamètre extérieur qui est sensiblement égal au diamètre intérieur de la paroi 52 supérieure de la bague 28 de fixation. Le diamètre de la membrane 74 est plus particulièrement choisi de manière que la portion 96 d'étanchéité soit en appui radial vers l'extérieur contre le bord interne de la paroi 52 supérieure, qui constitue ainsi la face 98 annulaire, lorsque la face 76 de contact est appuyée contre le tamis 22.As depicted at figure 11 , when pressed against the screen 22, the membrane 74 has an outer diameter which is substantially equal to the inner diameter of the upper wall 52 of the ring 28 for fixing. The diameter of the membrane 74 is more particularly chosen so that the sealing portion 96 bears radially outwards against the inner edge of the upper wall 52, which thus constitutes the annular face 98, when the face 76 of contact is pressed against the sieve 22.

Comme cela est particulièrement visible aux figures 8 et 9, la face 76 de contact de la membrane 74 présente, au repos, une périphérie de forme convexe de sorte que la portion 96 d'étanchéité soit agencée axialement au-dessus du niveau du reste de la face 76 de contact.As is particularly noticeable in figure 8 And 9 , the contact face 76 of the membrane 74 has, at rest, a periphery of convex shape so that the sealing portion 96 is arranged axially above the level of the rest of the face 76 of contact.

Plus particulièrement, la face 76 de contact présente ici une forme convexe sur toute sa surface depuis un point central agencé sensiblement au niveau de l'axe O principal du boîtier 12.More particularly, the contact face 76 here has a convex shape over its entire surface from a central point arranged substantially at the level of the main axis O of the housing 12.

Du fait de cette forme convexe, la membrane 74 est déformable élastiquement lors du vissage du couvercle 12 entre un état de début de contact partiel avec le tamis 22 lorsque le couvercle 12 occupe une première position, comme représentée à la figure 9, et un état d'appui axial total contre toute la surface du tamis lorsque le couvercle occupe une deuxième position de, comme représentée à la figure 10.Due to this convex shape, the membrane 74 is elastically deformable when the cover 12 is screwed between a start state of partial contact with the sieve 22 when the lid 12 occupies a first position, as shown in figure 9 , and a state of total axial support against the entire surface of the sieve when the lid occupies a second position of, as shown in figure 10 .

La deuxième position de vissage partiel est comprise entre la première position et la position totalement vissée du couvercle 12. Ainsi, la face 76 de contact est en contact avec la totalité du tamis 22 avant que le couvercle 12 ne soit complètement vissé. De la sorte, pendant qu'on continue à faire tourner le couvercle 12 pour finaliser l'opération de fermeture par vissage, la membrane 74 est entraînée en rotation par le couvercle 12. Ceci procure un nettoyage efficace de toute la surface du tamis 22 et de la face de contact 76 de la membrane 74.The second partially screwed position is between the first position and the fully screwed position of the cover 12. Thus, the contact face 76 is in contact with the entire screen 22 before the cover 12 is completely screwed on. In this way, while the lid 12 continues to be rotated to finalize the closing operation by screwing, the membrane 74 is driven in rotation by the lid 12. This provides effective cleaning of the entire surface of the screen 22 and of the contact face 76 of the membrane 74.

Pour favoriser un bon nettoyage du tamis 22 et de la membrane 74, la section 80 déformable présente une souplesse inférieure à la souplesse en flexion de la membrane 74 de manière que la face 76 de contact commence à se déformer avant la section 80 déformable. De ce fait, lors du vissage du couvercle, la membrane 74 atteindra tout d'abord son état de contact total, puis la déformation de la section 80 déformable absorbera les déplacements axiaux du couvercle 12.To promote good cleaning of the screen 22 and the membrane 74, the deformable section 80 has a lower flexibility than the bending flexibility of the membrane 74 so that the contact face 76 begins to deform before the deformable section 80. Therefore, when screwing the cover, the membrane 74 will first reach its full contact state, then the deformation of the deformable section 80 will absorb the axial displacements of the cover 12.

La première position est de préférence intermédiaire entre la position totalement dévissée et la deuxième position. Ceci signifie que dans sa position totalement dévissée, c'est-à-dire lorsque le couvercle 12 est posé sur la base 14 sans que le vissage n'ait débuté, comme illustré à la figure 8, la face de contact 76 de la membrane 74 est située à distance au-dessus du tamis 22. Ceci permet par exemple à un utilisateur d'utiliser le boîtier 10 en faisant sortir du produit cosmétique sur le tamis 22, puis de poser le couvercle 12 sur la base 14, par exemple pour éviter qu'un courant d'air n'emporte du produit cosmétique, sans que le produit cosmétique ne vienne se coller à la membrane 74.The first position is preferably intermediate between the fully unscrewed position and the second position. This means that in its completely unscrewed position, that is to say when the cover 12 is placed on the base 14 without the screwing having started, as illustrated in figure 8 , the contact face 76 of the membrane 74 is located at a distance above the sieve 22. This allows, for example, a user to use the case 10 by causing cosmetic product to come out on the sieve 22, then to put the lid on 12 on the base 14, for example to prevent a current of air from carrying away the cosmetic product, without the cosmetic product sticking to the membrane 74.

Pour faciliter le recyclage du boîtier 10, le joint 72 d'étanchéité et le couvercle sont réalisés en un ou plusieurs matériaux qui peuvent être traités par une même filière de recyclage. Le couvercle et le joint 72 d'étanchéité sont par exemple réalisés en polypropylène (PP).To facilitate the recycling of the housing 10, the seal 72 and the lid are made of one or more materials which can be treated by the same recycling sector. The lid and the seal 72 are for example made of polypropylene (PP).

On décrit à présent le fonctionnement de l'invention en référence aux figures 8 à 11.The operation of the invention will now be described with reference to the figures 8 to 11 .

Comme représenté à la figure 8, le couvercle 12 est tout d'abord posé sur la base 14 sans être vissé. Dans cette position totalement dévissée, la membrane 74 du joint 72 d'étanchéité est agencée à distance au-dessus du tamis 22. La section 80 déformable et la membrane 74 sont dans un état de repos.As depicted at figure 8 , the cover 12 is first placed on the base 14 without being screwed. In this completely unscrewed position, the membrane 74 of the seal 72 is arranged at a distance above the screen 22. The deformable section 80 and the membrane 74 are in a state of rest.

Puis, le couvercle 12 commence à être vissé par rotation autour de l'axe O principal par rapport à la base 14. Par coopération entre les filetages 34 et 71, le couvercle 12 se déplace axialement en direction de la base 14 jusqu'à atteindre la première position dans laquelle la membrane 74 entre en contact avec le tamis 22, comme représenté à la figure 9. Dans cette première position, et du fait de sa forme convexe, la face de contact 76 est en contact avec le tamis 22 par un point 100 central situé le long de l'axe O principal. Dans cette première position, la portion 96 d'étanchéité de la membrane 74 n'est pas encore en contact étanche avec la face 98 annulaire de la base 14. Ainsi, de l'air est encore susceptible de passer entre la cavité 16 et l'extérieur.Then, the cover 12 begins to be screwed by rotation around the main axis O with respect to the base 14. By cooperation between the threads 34 and 71, the cover 12 moves axially in the direction of the base 14 until it reaches the first position in which the membrane 74 comes into contact with the screen 22, as shown in figure 9 . In this first position, and because of its convex shape, the contact face 76 is in contact with the screen 22 by a central point 100 located along the main axis O. In this first position, the sealing portion 96 of the membrane 74 is not yet in sealed contact with the annular face 98 of the base 14. Thus, air is still likely to pass between the cavity 16 and the 'outside.

En poursuivant le vissage du couvercle 12, et du fait de la plus grande souplesse en flexion de la membrane 74, cette dernière se déforme en flexion à mesure qu'elle appuie contre le tamis 22. Du fait de cette déformation en flexion de la membrane 74, l'aire de contact entre la face de contact 76 et le tamis 22 augmente progressivement. L'aire de contact présente ici une forme de disque dont le diamètre augmente à mesure que le couvercle 12 se rapproche du tamis 22. Ainsi, une zone annulaire du tamis 22, qui entoure l'aire de contact, demeure libre. De l'air est donc encore susceptible de circuler entre l'intérieur et l'extérieur de la cavité 16 à travers cette zone annulaire libre. Le volume de la chambre 78 diminue à mesure que la membrane 74 se déforme en flexion.By continuing the screwing of the cover 12, and due to the greater flexibility in bending of the membrane 74, the latter is deformed in bending as it presses against the screen 22. Due to this deformation in bending of the membrane 74, the contact area between the contact face 76 and the screen 22 increases progressively. The contact area here has the shape of a disk, the diameter of which increases as the cover 12 approaches the screen 22. Thus, an annular zone of the screen 22, which surrounds the contact area, remains free. Of the air is so still capable of circulating between the inside and the outside of the cavity 16 through this free annular zone. The volume of the chamber 78 decreases as the membrane 74 deforms in bending.

Au cours du vissage, le couvercle 12 atteint sa deuxième position, comme représentée à la figure 10. La face 76 de contact atteint alors son état d'appui axial total avant que le couvercle 12 n'atteigne sa position totalement vissée. Dans cette position, la portion 96 d'étanchéité est alors en contact étanche avec la face 98 annulaire de la base 14. La cavité 16 est donc fermée de manière étanche par la membrane 74. La face de contact 76 est alors appuyée axialement contre la totalité de la surface du tamis 22. La section 80 déformable n'est que légèrement, voire pas du tout, déformée axialement.During screwing, the cover 12 reaches its second position, as shown in figure 10 . The contact face 76 then reaches its state of total axial support before the cover 12 reaches its fully screwed position. In this position, the sealing portion 96 is then in sealed contact with the annular face 98 of the base 14. The cavity 16 is therefore closed in a sealed manner by the membrane 74. The contact face 76 is then pressed axially against the entire surface of the screen 22. The deformable section 80 is only slightly, if at all, deformed axially.

En poursuivant le vissage du couvercle 12, la face 76 de contact tourne en frottant contre la totalité de la surface du tamis 22. Ceci force les grains de produit cosmétique à retourner à l'intérieur de la cavité 16 à travers le tamis 22. Ainsi, la surface du tamis 22 et la face de contact 76 sont nettoyées simultanément des résidus de produit cosmétique. Le couvercle 12 est ainsi tourné autour de son axe O principal jusqu'à atteindre sa position totalement vissée sur la base 14, comme représenté à la figure 11. Entre la deuxième position, représentée à la figure 10, et la position totalement vissée, représentée à la figure 11, le couvercle 12 peut par exemple tourner d'un angle de rotation compris entre un quart de tour et deux tours. Bien entendu, plus l'angle de rotation sera grand, plus le nettoyage sera efficace.By continuing to screw the cover 12, the contact face 76 rotates by rubbing against the entire surface of the sieve 22. This forces the grains of cosmetic product to return inside the cavity 16 through the sieve 22. Thus , the surface of the screen 22 and the contact face 76 are simultaneously cleaned of cosmetic product residues. Cover 12 is thus rotated around its main axis O until it reaches its fully screwed position on base 14, as shown in figure 11 . Between the second position, shown in figure 10 , and the fully tightened position, shown in figure 11 , the cover 12 can for example rotate through an angle of rotation of between a quarter turn and two turns. Of course, the greater the angle of rotation, the more effective the cleaning will be.

Entre sa deuxième position et sa position totalement vissée, le couvercle 12 se rapproche encore du tamis 22. Pour éviter que la membrane 74 n'appuie trop fortement contre le tamis 22, ce qui pourrait endommager ce dernier, la déformation de la section 80 déformable permet de faire coulisser axial le couvercle 12 vers le tamis 22 jusqu'à sa position totalement vissée sans que la pression de la face de contact 76 contre le tamis 22 ne soit sensiblement augmentée. Le volume de la chambre 78 devient alors minimal, mais non nul, la membrane 74 étant encore à distance de la paroi 68 supérieure du couvercle 12 dans cette position totalement vissée.Between its second position and its fully screwed position, the cover 12 is still approaching the sieve 22. To prevent the membrane 74 from pressing too strongly against the sieve 22, which could damage the latter, the deformation of the deformable section 80 makes it possible to slide cover 12 axially towards screen 22 until it is fully screwed in without the pressure of contact face 76 against screen 22 being substantially increased. The volume of chamber 78 then becomes minimal, but not zero, membrane 74 still being at a distance from upper wall 68 of cover 12 in this fully screwed position.

La position totalement vissée est par exemple arrêtée lorsqu'un ergot 102 portée par l'un parmi le couvercle 12 ou le socle 24 est emboîté élastiquement dans un cran 104 porté par l'autre parmi le couvercle 12 ou le socle 24. L'ergot 102 est ici réalisé en relief au bas de la face interne de la paroi 70 cylindrique du couvercle 12, au-dessous du filetage 71 comme représenté à la figure 4. Le cran 104 est ici réalisé au bas de la face externe de la paroi cylindrique du socle, au-dessous du filetage 34, comme représenté à la figure 3.The fully screwed position is for example stopped when a lug 102 carried by one of the cover 12 or the base 24 is fitted elastically in a notch 104 carried by the other of the cover 12 or the base 24. The lug 102 is here made in relief at the bottom of the inner face of the cylindrical wall 70 of the cover 12, below the thread 71 as shown in figure 4 . The notch 104 is here made at the bottom of the outer face of the cylindrical wall of the base, below the thread 34, as shown in picture 3 .

Le boîtier 10 est alors fermé de manière étanche.The housing 10 is then closed in a sealed manner.

Lorsqu'on ouvre à nouveau le boîtier 10, le couvercle 12 est tourné dans un sens de dévissage autour de l'axe O principal par rapport à la base 14. Le joint 71 d'étanchéité est configuré pour que, lors du dévissage, la périphérie de la face 76 de contact commence par s'écarter axialement du tamis 22 pour libérer une zone périphérique du tamis 22. Une zone intérieure complémentaire du tamis 22 de ladite zone périphérique demeure entièrement en contact avec la face 76 de contact.When the case 10 is opened again, the cover 12 is turned in an unscrewing direction around the main axis O with respect to the base 14. The seal 71 is configured so that, when unscrewing, the periphery of the face 76 of contact begins by deviating axially from the screen 22 to release a peripheral zone of the screen 22. A complementary inner zone of the screen 22 of said peripheral zone remains entirely in contact with the face 76 of contact.

La portion 96 d'étanchéité est écartée de sa face d'appui avant ou simultanément au commencement de l'écartement de la périphérie de la face 76 de contact de la zone périphérique du tamis 22 pour créer un interstice de passage de l'air vers l'intérieur de la cavité 16 à travers ladite zone périphérique.The sealing portion 96 is separated from its bearing face before or simultaneously at the beginning of the separation of the periphery of the contact face 76 from the peripheral zone of the screen 22 to create an air passage gap towards inside the cavity 16 through said peripheral zone.

Ceci évite un effet de ventouse qui s'opposerait à l'ouverture du couvercle 12. Cela évite aussi l'aspiration de produit cosmétique au-dessus du tamis 22 qui pourrait arriver si la face de contact avait la même forme que le tamis 22.This avoids a suction cup effect which would oppose the opening of the cover 12. This also prevents the suction of cosmetic product above the sieve 22 which could happen if the contact face had the same shape as the sieve 22.

Au contraire, le fait que la face de contact 76 s'écarte progressivement du tamis 22 en retrouvant sa forme convexe à mesure du dévissage du couvercle 12 permet de libérer progressivement la surface du tamis 22 de l'extérieur vers l'intérieur, évitant ainsi les appels d'air au-dessus du tamis 22.On the contrary, the fact that the contact face 76 gradually moves away from the sieve 22 by regaining its convex shape at measurement of the unscrewing of the lid 12 allows the surface of the sieve 22 to be gradually released from the outside inwards, thus avoiding the drafts of air above the sieve 22.

Ainsi, lorsque l'utilisateur ouvre à nouveau le boîtier 10, le tamis 22 mais aussi la face de contact 76 du joint 72 d'étanchéité sont nettoyés. Ceci permet d'éviter de répandre du produit cosmétique partout. Pour pouvoir utiliser le produit cosmétique, l'utilisateur doit donc faire le geste volontaire de faire remonter le fond 40 du récipient 26 vers le haut par pression du doigt pour faire passer la quantité de produit cosmétique désirée au-dessus du tamis 22.Thus, when the user opens the housing 10 again, the sieve 22 but also the contact face 76 of the gasket 72 is cleaned. This avoids spreading the cosmetic product everywhere. To be able to use the cosmetic product, the user must therefore make the voluntary gesture of raising the bottom 40 of the container 26 upwards by finger pressure to pass the desired quantity of cosmetic product above the sieve 22.

Claims (15)

Boîtier (10) pour produit cosmétique pulvérulent comportant : - une base (14) comportant une cavité (16) de réception dudit produit, la cavité (16) débouchant axialement par une ouverture (18) ; - un tamis (22) agencé dans l'ouverture (18) ; - un couvercle (12) de fermeture qui est destiné à être vissé sur la base (14) entre une position totalement dévissée et une position totalement vissée dans laquelle il est rapproché axialement de l'ouverture (18) pour permettre sa fermeture étanche ; - un joint (72) d'étanchéité fixée au couvercle (12) par une extrémité supérieure qui comporte : -- une section (80) latérale déformable élastiquement selon une direction axiale; -- une membrane (74) qui est fixée à une extrémité inférieure de la section (80) déformable et qui comporte une face (76) de contact destinée à être en appui sur toute la surface du tamis (22) ; -- une chambre (78) délimitée entre le couvercle (12) et la membrane (74) ; caractérisé en ce que la face (76) de contact la membrane (74) est déformable élastiquement en flexion pour que la face (76) de contact épouse la forme du tamis (22) pendant le vissage du couvercle (12), la face (76) de contact présentant des éléments de relief. Case (10) for powdery cosmetic product comprising: - a base (14) comprising a cavity (16) for receiving said product, the cavity (16) emerging axially through an opening (18); - a sieve (22) arranged in the opening (18); - a closure cover (12) which is intended to be screwed onto the base (14) between a fully unscrewed position and a fully screwed-in position in which it is brought axially closer to the opening (18) to allow its sealed closure; - a seal (72) fixed to the lid (12) by an upper end which comprises: -- a lateral section (80) elastically deformable in an axial direction; -- a membrane (74) which is fixed to a lower end of the deformable section (80) and which has a contact face (76) intended to rest on the entire surface of the screen (22); -- a chamber (78) delimited between the cover (12) and the membrane (74); characterized in that the face (76) of contact with the membrane (74) is elastically deformable in bending so that the face (76) of contact matches the shape of the screen (22) during the screwing of the cover (12), the face ( 76) contact with relief elements. Boîtier selon la revendication précédente, caractérisé en ce que la face (76) de contact présente une forme différente entre la position totalement dévissée du couvercle (12) et la position totalement vissée du couvercle (12).Box according to the preceding claim, characterized in that the contact face (76) has a different shape between the fully unscrewed position of the cover (12) and the fully screwed position of the cover (12). Boîtier (10) selon la revendication précédente, caractérisé en ce que la membrane (74) est déformable élastiquement en flexion lors du vissage du couvercle (12) entre un état de contact partiel de la face (76) de contact avec le tamis (22) lorsque le couvercle (12) occupe une première position et un état d'appui axial total de la face (76) de contact contre toute la surface du tamis (22) lorsque le couvercle (12) occupe une deuxième position.Housing (10) according to the preceding claim, characterized in that the membrane (74) is deformable elastically in bending during the screwing of the lid (12) between a state of partial contact of the face (76) of contact with the screen (22) when the lid (12) occupies a first position and a state of total axial support of the face (76) of contact against the entire surface of the screen (22) when the cover (12) occupies a second position. Boîtier selon la revendication précédente, caractérisé en ce que, lors du vissage, la face (76) de contact atteint son état d'appui axial total avant que le couvercle (12) n'atteigne sa position totalement vissée, la déformation de la section (80) déformable permettant un coulissement axial du couvercle (12) vers le tamis (22) jusqu'à sa position totalement vissée.Box according to the preceding claim, characterized in that , during screwing, the contact face (76) reaches its state of total axial support before the cover (12) reaches its completely screwed position, the deformation of the section (80) deformable allowing axial sliding of the cover (12) towards the screen (22) to its fully screwed position. Boîtier (10) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une portion (96) d'étanchéité annulaire de la membrane (74), qui entoure la face (76) de contact, est destinée à venir en contact étanche avec une face (98) annulaire de la base (14) en position totalement vissée.Housing (10) according to any one of the preceding claims, characterized in that an annular sealing portion (96) of the membrane (74), which surrounds the contact face (76), is intended to come into contact sealed with an annular face (98) of the base (14) in the fully screwed position. Boîtier (10) selon la revendication précédente, caractérisé en ce que le joint (72) est configuré pour que, lors du dévissage, une périphérie de la face (76) de contact commence par s'écarter axialement du tamis (22) pour libérer une zone périphérique du tamis (22), une zone intérieure complémentaire de ladite zone périphérique demeurant entièrement en contact avec la face (76) de contact.Box (10) according to the preceding claim, characterized in that the seal (72) is configured so that, during unscrewing, a periphery of the contact face (76) begins to move away axially from the screen (22) to release a peripheral zone of the screen (22), an interior zone complementary to said peripheral zone remaining entirely in contact with the face (76) of contact. Boîtier (10) selon la revendication précédente, caractérisé en ce que le joint (72) est configuré pour que la portion (96) d'étanchéité soit écartée de sa face (98) d'appui avant ou simultanément au commencement de l'écartement de la périphérie de la face (76) de contact de la zone périphérique du tamis (22) pour créer un interstice de passage de l'air vers l'intérieur de la cavité (16) à travers ladite zone périphérique.Box (10) according to the preceding claim, characterized in that the gasket (72) is configured so that the sealing portion (96) is moved away from its bearing face (98) before or simultaneously at the start of the moving from the periphery of the contact face (76) of the peripheral zone of the sieve (22) to create a gap for the passage of air towards the interior of the cavity (16) through said peripheral zone. Boîtier (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que la face (76) de contact du joint (72) présente, dans un état de repos de la membrane (74), une périphérie de forme convexe.Housing (10) according to any one of the preceding claims, characterized in that the contact face (76) of the joint (72) has, in a state of rest of the membrane (74), a periphery of convex shape. Boîtier (10) selon la revendication précédente, caractérisé en ce que, dans un état de repos de la membrane (74), la face (76) de contact présente une forme convexe sur toute sa surface depuis un point (100) central agencé sensiblement au niveau d'un axe (0) central du tamis (22).Box (10) according to the preceding claim, characterized in that , in a state of rest of the membrane (74), the contact face (76) has a convex shape over its entire surface from a central point (100) arranged substantially at a central axis (0) of the sieve (22). Boîtier (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que la section (80) déformable élastiquement est formée par un soufflet annulaire qui entoure la chambre (78).Housing (10) according to any one of the preceding claims, characterized in that the elastically deformable section (80) is formed by an annular bellows which surrounds the chamber (78). Boîtier (10) selon la revendication précédente, caractérisé en ce que la section (80) déformable présente une souplesse inférieure à celle de la membrane (74) de manière que la face (76) de contact commence à se déformer en flexion avant la section (80) de fixation.Casing (10) according to the preceding claim, characterized in that the deformable section (80) has less flexibility than that of the membrane (74) so that the contact face (76) begins to deform in bending before the section (80) fixing. Boîtier (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que le joint (72) est réalisé en une seule pièce.Housing (10) according to any one of the preceding claims, characterized in that the seal (72) is made in one piece. Boîtier (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que le joint (72) et le couvercle (12) sont réalisés en un même matériau.Box (10) according to any one of the preceding claims, characterized in that the gasket (72) and the cover (12) are made of the same material. Boîtier (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments de relief sont répartis régulièrement sur toute la surface de la face (76) de contact.Case (10) according to any one of the preceding claims, characterized in that the elements in relief are regularly distributed over the entire surface of the contact face (76). Boîtier (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments de reliefs sont des picots (94).Case (10) according to any one of the preceding claims, characterized in that the relief elements are studs (94).
EP22187633.7A 2021-11-09 2022-07-28 Self-cleaning box for powder cosmetic product Pending EP4176764A1 (en)

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FR2111871A FR3128857B1 (en) 2021-11-09 2021-11-09 SELF-CLEANING CASE FOR POWDERED COSMETIC PRODUCT

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EP (1) EP4176764A1 (en)
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211559073U (en) * 2019-11-27 2020-09-25 洽兴包装工业(中国)有限公司 Airtight powder container

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211559073U (en) * 2019-11-27 2020-09-25 洽兴包装工业(中国)有限公司 Airtight powder container

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CN116098371A (en) 2023-05-12

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