EP3527104B1 - Mechanism for a case for applying a cosmetic product, in particular a stick of lipstick, and case comprising such a mechanism - Google Patents

Mechanism for a case for applying a cosmetic product, in particular a stick of lipstick, and case comprising such a mechanism Download PDF

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Publication number
EP3527104B1
EP3527104B1 EP19157050.6A EP19157050A EP3527104B1 EP 3527104 B1 EP3527104 B1 EP 3527104B1 EP 19157050 A EP19157050 A EP 19157050A EP 3527104 B1 EP3527104 B1 EP 3527104B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
guide
cup
head
cosmetic product
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.)
Active
Application number
EP19157050.6A
Other languages
German (de)
French (fr)
Other versions
EP3527104A1 (en
Inventor
Pascal Genelot
Yicheng Dong
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 EP3527104A1 publication Critical patent/EP3527104A1/en
Application granted granted Critical
Publication of EP3527104B1 publication Critical patent/EP3527104B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/06—Casings wherein movement of the lipstick or like solid is a screwing movement
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/02—Casings wherein movement of the lipstick or like solid is a sliding movement
    • A45D40/04—Casings wherein movement of the lipstick or like solid is a sliding movement effected by a screw
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/20—Pencil-like cosmetics; Simple holders for handling stick-shaped cosmetics or shaving soap while in use
    • A45D40/205—Holders for stick-shaped cosmetics whereby the stick can move axially relative to the holder
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D2040/0018—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks with indirect access, e.g. requiring an initial action for separating the cap from the stick holder
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/20—Pencil-like cosmetics; Simple holders for handling stick-shaped cosmetics or shaving soap while in use
    • A45D40/205—Holders for stick-shaped cosmetics whereby the stick can move axially relative to the holder
    • A45D2040/208—Holders for stick-shaped cosmetics whereby the stick can move axially relative to the holder the relative movement being made by a rotating action, e.g. effected by a screw

Definitions

  • the invention relates to a mechanism for a case for applying a cosmetic product, in particular a lipstick grape, and a case comprising such a mechanism.
  • the invention also relates to a case for applying a cosmetic product comprising a cover, a base which comprises a mechanism according to the invention.
  • the mechanism of the case makes it possible to selectively move the cosmetic product between a retracted position and an application position in which the cosmetic product is capable of being applied by friction.
  • the actuation of the mechanism is generally controlled manually by applying a rotational movement to the base of the case, which rotational movement is transmitted to the mechanism to cause the axial displacement of the cup containing the cosmetic product.
  • a mechanism of the type described above comprising a sleeve is in particular but not exclusively used when the cosmetic product has a so-called “soft” ( soft ) to “very soft” ( very soft ) formulation.
  • the cosmetic product is then directly in contact with part of the internal wall of the sleeve to ensure its retention.
  • such soft cosmetic product formulations are not capable of being packaged in the form of a stick forming a grape capable of exhibiting sufficient mechanical strength, in particular during processing. cosmetic product application.
  • the cosmetic product is generally poured directly into the sleeve, for example through the cup of the mechanism.
  • a different design is known for integrating such a sleeve, also called an “ A-shell ”, in a mechanism.
  • the sleeve is made in one piece, in one piece, with the guide of the mechanism.
  • the sleeve is an aesthetic part because such a sleeve is visible, since it extends outside the base of the case inside which the rest of the mechanism is housed.
  • the sleeve is generally made of a metallic material, such as anodized aluminum, to preserve the aesthetics of the case, the base and cover of which are often made of "precious" materials. .
  • the use of metallic material for the sleeve improves the cooling of the cosmetic product formulation after it has been poured as well as its appearance, making it possible in particular to reduce the duration of the manufacturing cycle.
  • the upper part of the tubular body constitutes a sleeve while the lower part constitutes a guide for a cup made in two parts.
  • This first one-piece design of the sleeve and of the guide also has the drawback of using the same material throughout the entire piece.
  • the sleeve and the guide are made in the form of two separate parts.
  • This second design then makes it possible to freely choose the material of each of the parts, typically a metallic material for the sleeve and a plastic material for the guide of the mechanism.
  • Such bonds by gluing or by crimping have the advantage of simultaneously ensuring an axial connection and a rotational connection between the sleeve and the guide.
  • Punching sometimes leads to the formation of chips, in particular when the sleeve has a finishing coating deposited by anodization.
  • the production of a crimping is a delicate operation to master, in particular when the two parts are made of different materials with a plastic guide.
  • Mechanism allowing a connection between the sleeve and the guide such as the one, for example, described in document US 4,983,059A .
  • the aim of the invention is in particular to provide a novel mechanism design making it possible to resolve at least some of the drawbacks of the state of the art while having a connection between the sleeve and the guide which is advantageously simple, reliable and economical. .
  • the mechanism comprises elastic interlocking fixing means for axially immobilizing said sleeve with respect to the guide and means for locking in rotation for locking said sleeve in rotation with respect to the guide.
  • Such elastic interlocking fixing means are respectively carried by the guide and the sleeve intended to be immobilized axially together.
  • the elastic interlocking fixing means intervening between the guide and the sleeve are configured to obtain a non-removable fixing.
  • the elastic interlocking fixing means according to the invention make it possible to guarantee the fixing of the sleeve and of the guide, very particularly good resistance in the event of application of a tensile force axially upwards which would for example be exerted on the sleeve. while the guide would be maintained.
  • the means for blocking the sleeve in rotation are means distinct from said fixing means by elastic interlocking.
  • the guide is made of plastic material so that said at least one flexible tab forming the fixing means and the locking means are made in one piece, integrally, with said guide.
  • said elastic interlocking fixing means comprise at least two flexible tabs which are arranged on the head of the guide, diametrically opposite one another in order in particular to balance the immobilization forces.
  • the sleeve is made of a metallic material, such as anodized aluminum.
  • the invention also provides a case for applying a cosmetic product comprising a cover, a base which comprises a mechanism according to the invention, characterized in that the sheath of the mechanism is connected in rotation to the base of the case.
  • the sheath of the mechanism is connected in rotation to the base of the case by cooperation of shapes.
  • the sheath of the mechanism and the base of the case are linked in rotation by means of complementary engagement means arranged on each of the parts.
  • the engagement means are for example formed by grooves which, integral with the base of the case, are intended to cooperate with grooves carried by a wheel formed on the sheath of the mechanism.
  • the flexible tabs are not in contact with the cup so as to avoid any interference liable to modify the torque to be applied to the base in order to cause the axial displacement of the cup.
  • the “axial” direction corresponds to that of the main axis O shown in the figures and the “radial” direction is orthogonal to the axial direction.
  • the cosmetic product is a lipstick grape intended to be applied by rubbing, as a variant a lip care balm.
  • the case 100 comprises at least one cover 102 which is associated with a base 104 having a complementary shape.
  • the case 100 has a main axis O which extends in the axial direction.
  • the cover 102 and the base 104 of the case 100 have a cylindrical shape of circular section, in particular illustrated by the figure 1 .
  • the cover 102 is removable forming a part completely independent of the base 104.
  • the cover 102 is capable of occupying at least one open position (not shown) in which the cover 102 is separated from the base 104 with a view in particular to allowing the application of the cosmetic product.
  • the cover 102 is capable of occupying a closed position illustrated by the figures 2 and 3 in which the cover 102 is integral with the base 104.
  • the lower part of the cover 102 has at least one annular bead 106 inside.
  • said at least one bead 106 is received in an annular groove 108, for example formed in an external cylindrical surface of an upper part 110 of the base 104.
  • said at least one bead 106 cooperates with the external cylindrical surface of an upper part 110 of the base 104.
  • the annular bead 106 is notably visible on the figure 1 thanks to the transparency of the cover 102.
  • the annular bead 106 ensures the axial retention of the cover 102 on the base 104 in the closed position.
  • the annular bead 106 participates in obtaining an airtight closure in order to guarantee good conservation of the cosmetic product.
  • the base 104 comprises a shoulder 112 which extends radially at the level of the connection of the upper part 110 of the base 104 with a lower part 114 of larger diameter.
  • the cover 102 has a lower edge 116 which is capable of abutting against said shoulder 112 in the closed position.
  • the cover 102 and the base 104 are hollow parts, the cover 102 is closed at its upper end by a top wall 117 while the base 104 is closed at its lower end by a bottom 118.
  • the bottom 118 comprises a central orifice 119 for the hot casting of the cosmetic product.
  • the diameter of the orifice 119 is determined to allow the axial introduction of a cannula for the hot casting of the cosmetic product.
  • the lower part 114 of the base 104 internally comprises a part of the engagement means 120.
  • the engagement means 120 are further formed by axial grooves 122 projecting relative to an internal cylindrical wall 124 of the lower part 114 of the base 104, the assembly being visible on the side. figure 1 by making the base 104 transparent.
  • the axial splines 122 are distributed circumferentially in two diametrically opposed sectors, each splined sector comprising for example here five splines 122.
  • the entire internal cylindrical wall 124 of the lower part 114 of the base 104 circumferentially comprises grooves 122.
  • the case 100 which has just been described is intended to receive a mechanism 10 for dispensing the cosmetic product.
  • the mechanism 10 is intended to be able to be changed, in particular but not exclusively after the complete use of the cosmetic product, so as to be able to continue using the case 100 with a new mechanism 10 forming a refill.
  • Such a mechanism 10 and its general operation are known from the state of the art, more particularly for the dispensing of a cosmetic product such as a lipstick grape.
  • the mechanism 10 comprises a cup 12 intended to receive at least part of said cosmetic product.
  • the cup 12 is made in one piece and has a generally tubular shape extending axially and respectively delimited by an upper edge 13 and by a lower edge 15.
  • the cup 12 centrally comprises a passage whose entrance is delimited circumferentially by the edge 15 and through which the hot casting of the cosmetic product takes place.
  • the mechanism 10 being mounted in the base 104, the case 100 is for example turned over so as to orient it with the bottom 118 upwards in order to then perform the hot casting of the cosmetic product axially from top to bottom, that is, ie advantageously with the help of gravity.
  • the hot casting of the cosmetic product is generally carried out by means of a cannula, the free end of which is preferably introduced through the orifice 119 then through the cup 12 to a sleeve of the mechanism 10 which will be described later. .
  • the cup 12 comprises at least one lug 14, preferably here two lugs 14 which, diametrically opposed, project radially outwards.
  • the lugs 14 have a non-circular profile in section.
  • the lugs 14 comprise at least one flat intended to cooperate with at least one helical groove of a sheath which will be described later.
  • the cup 12 is made in two parts, respectively an upper cup intended to receive the cosmetic product and a lower cup, also sometimes called "cup motor”.
  • the lower cup then comprises the lug (s) 14 intended to cooperate with the other parts of the mechanism 10.
  • the two parts of the cup 12 are assembled integrally with one another, for example by elastic interlocking.
  • the cup 12 is intended to be mounted axially movable inside a guide 16, respectively between at least one retracted position illustrated on the figures 2 and 3 and an application position (not shown).
  • the guide 16 constitutes a first element of the mechanism 10 for dispensing the cosmetic product.
  • the guide 16 mainly comprises an upper part, which will be referred to hereinafter as being a head 18, and which is axially extended by a lower part, which will be referred to hereinafter as being a body 20.
  • the body 20 extends axially between a flange 22 and a lower flange 24, the flange 22 providing at its upper end the junction with the head 18.
  • the flange 22 and the flange 24 extend radially outwardly projecting from an outer cylindrical surface 26 of the body 20 of the guide 16.
  • the collar 22 is circumferentially continuous and has a lower face 28 and an upper face 30.
  • the body 20 of the guide 16 comprises at least one slide 32 which extends axially in a rectilinear manner and in which one of the lugs 14 of the cup 12 slides axially in operation.
  • the body 20 of the guide 16 comprises two slides 32 which, diametrically opposed, each receive one of the lugs 14 of the cup 12 after it has been mounted inside the body 20 of the guide 16.
  • one of the slides 32 is open axially at its lower end, interrupting the rim 24 of the body 20, to allow the cup 12 to be fitted inside the guide 16, produced axially by the lower end of the body 20 of the guide 16.
  • the slides 32 each have two rectilinear and parallel edges which extend axially along the axis O.
  • the head 18 of the guide 16 will be described in detail later with reference to the embodiment according to the invention.
  • the mechanism 10 comprises a second element formed by a sheath 34 generally having a cylindrical shape.
  • the sheath 34 axially comprises a flange 36 at its upper end and its lower end forming a skirt is configured to form an actuating wheel 38.
  • the wheel 38 has an outer cylindrical surface provided with a set of ridges 40 which extend axially, parallel to each other, here over the entire circumference of the wheel 38.
  • the ridges 40 of the wheel 38 of the sheath 34 of the mechanism 10 are intended to cooperate with the grooves 122 of the base 104 of the case 100.
  • the ridges 40 of the sheath 34 and the grooves 122 of the base 104 constitute said engagement means 120.
  • the sheath 34 is mounted axially on the body 20 of the guide 16 by elastic interlocking.
  • the sheath 34 surrounds the body 20 of the guide 16.
  • the sheath 34 is axially blocked between the lower face 28 of the flange 22 of the guide 16 which forms an upper stop for the rim 36 of the sheath 34 and the lower rim 24 of the body 20. of guide 16.
  • the sheath 34 comprises at least one helical groove 42 formed in an internal wall 44.
  • the sheath 34 comprises two helical grooves 42 which are each intended to cooperate with one of the lugs 14 of the cup 12.
  • the lugs 14 of the cup 12 pass radially through the axial slides 32 of the guide 16 to each cooperate with one of the helical grooves 42 of the sheath 34.
  • any rotational movement around the axis O which is applied by a user to the lower part 114 of the base 104 is directly transmitted to the mechanism 10, more precisely transmitted to the wheel 38 of the sheath. 34 of mechanism 10.
  • the rotational drive of the sheath 34 then causes an axial translational movement of the cup 12 which is thus controlled in movement between the retracted and application positions.
  • the sheath 34 comprises angular indexing means such as a notch 45.
  • the mechanism 10 comprises a sleeve 46 intended to extend axially around the cosmetic product.
  • the sleeve 46 defines an internal volume intended to receive the cosmetic product.
  • the mechanism 10 is more particularly intended to receive a cosmetic product having a so-called “soft” ( soft ) to “very soft” ( very soft ) formulation.
  • the cosmetic product In the case of a cosmetic product having a formulation called “soft” (soft) "very soft” (very soft), the cosmetic product is in contact with all or part of the inner wall of sleeve 46.
  • the sleeve 46 ensures the maintenance of said cosmetic product.
  • the cosmetic product is introduced inside the sleeve 46 during hot casting. of said product, for example through the orifice 119 then the cup 12 and finally the sleeve 46.
  • the sleeve 46 is made of a metallic material, such as anodized aluminum.
  • the reduction in the cooling time makes it possible to reduce the duration of the manufacturing cycle and to improve the appearance of the cosmetic product, the appearance being in particular smoother.
  • the sleeve 46 has an upper edge 48, here of bevelled shape and, axially opposite, a lower edge 50 of circular shape.
  • the sleeve 46 has an outer cylindrical surface 52 in which are formed at least one opening 54 intended to allow the sleeve 46 to be integrally connected with the head 18 of the guide 16.
  • the sleeve 46 has two openings 54 which are arranged diametrically opposite to each other.
  • the opening 54 here extends circumferentially in a generally oblong shape and is delimited axially by an upper edge 56 and a lower edge 58 which, respectively straight, are more particularly illustrated by the figures 4 and 5 .
  • the sleeve 46 comprises at least one notch 60 which is open axially downwards and opens into the lower edge 50 of the sleeve 46.
  • the notch 60 generally has an inverted "U” shape, the notch 60 having a first edge 62 and a second edge 64 which extend axially and are connected by an upper edge 66, here of curvilinear shape.
  • the notch 60 is disposed axially below and aligned with one of the openings 54 of the sleeve 46.
  • the head 18 of the guide 16 comprises means 68 for locking in rotation intended to cooperate with complementary means 60 of the sleeve 46 for locking said sleeve 46 in rotation with respect to the guide 16.
  • the locking means 68 comprise at least one finger which is intended to be received axially in said at least one notch 60 of the sleeve 46.
  • the rotational locking finger 68 extends axially upwards from the upper surface 30 of the flange 22 against which the lower edge 50 of the sleeve 46 is capable of abutting, in particular during assembly.
  • the finger 68 of the guide 16 has a shape complementary to that of the notch 60 of the sleeve 46.
  • the head 18 of the guide 16 comprises fixing means 70 by elastic interlocking configured to cooperate with complementary means 54 of the sleeve 46 in order to axially immobilize said sleeve 46 with respect to the guide 16.
  • the mechanism 10 comprises a guide 16 comprising means 70 for fixing by elastic interlocking configured to cooperate with means 54 complementary to the sleeve 46 in order to axially immobilize said sleeve 46 with respect to the guide 16, and means 68 for locking in rotation intended to cooperate with complementary means 60 of the sleeve 46 for locking said sleeve 46 in rotation with respect to the guide 16.
  • the fixing means 70 consist of at least one flexible tab, elastically deformable in the radial direction, which is intended to cooperate with a part of the sleeve 54 to axially immobilize said sleeve 46 relative to the guide 16.
  • the locking finger 68 is arranged axially below and aligned with said at least one flexible tab 70 in order in particular to facilitate the release of the guide 16 and more particularly of the head 18 forming its upper part.
  • the notch 60 intended to receive the locking finger 68 is then disposed axially below and aligned with one of the openings 54 of the sleeve 46.
  • the fixing means 70 comprise at least two flexible tabs elastically deformable in a radial direction.
  • a flexible tab 70 has a free end 72 which is received after assembly in one of the associated openings 54 of the sleeve 46 in order to axially immobilize said sleeve 46 with respect to the guide 16.
  • the means 68 for locking the sleeve 46 in rotation are distinct from the means 70 for fixing the sleeve 46 preferably formed by said at least two flexible tabs 70.
  • said at least two flexible tabs 70 are arranged on the head 18 of the guide 16 diametrically opposite one another.
  • the fixing of the sleeve 46 on the head 18 of the guide 16 is carried out by elastic interlocking, here by the cooperation of said flexible tabs 70 integral with the head 18 of the guide 16 with the openings 54 of the sleeve 46.
  • the elastic interlocking fixing of the sleeve 46 on the head 18 of the guide 16 offers an alternative solution to gluing and / or crimping according to the state of the art.
  • each can advantageously be made of a different material, preferably metallic for the sleeve 46 and plastic for the guide 16.
  • the use of metallic material for the sleeve 46 is advantageous for both aesthetic and technical reasons, in particular better cooling of the cosmetic product after casting.
  • plastic material for the guide 16 is advantageous for technical reasons, in particular allowing manufacture by injection molding in one piece, as well as for economic reasons.
  • the elastic interlocking fixing of the sleeve 46 on the head 18 of the guide 16 constitutes a simple, reliable and economical solution for axially connecting the sleeve 46 and the guide 16 of the mechanism 10 together.
  • said at least two flexible tabs 70 advantageously extend in an axial direction, that is to say along the axis O of the mechanism 10, said axial direction corresponding to the assembly direction. according to which the sleeve 46 and the guide 16 are fixed together.
  • each flexible tab 70 comprises at least one upper assisting face 74 which is configured to facilitate the elastic deformation of said tab 70, radially inward, during assembly of the sleeve 46 with the guide 16 in the axial direction.
  • the lower edge 50 of the sleeve 46 cooperates with the upper assistance face 74 which is inclined to cause, under stress, its displacement radially inward.
  • the free end 72 of the flexible tab 70 has a generally triangular shape in section.
  • the head 18 of the guide 16 has a cutout 76 to allow the movement of each of the flexible legs 70 radially inward.
  • the elastic deformation of the flexible tabs 70 in the radial direction during the axial assembly of the sleeve 46 with the guide 16 is particularly advantageous, making it possible to avoid any damage to said flexible tabs 70.
  • the fact that the flexible tabs 70 are elastically deformable in the radial direction makes it possible to prevent the lower edge 50 of the sleeve 46 from damaging them during assembly.
  • the sleeve 46 preferably made of a metallic material generally has a small thickness, for example of the order of 0.3 mm.
  • the lower edge 50 of the sleeve 46 forms with respect to the tabs 70 a “sharp” element which is capable of “cutting” or “shearing” them during assembly, like a blade.
  • the flexible tabs 70 are then elastically biased, radially outward, in a final assembly phase to each come to be housed automatically in an associated one of the openings 54 of the sleeve 46.
  • each flexible tab 70 comprises at least one lower immobilization face 78 which is configured to cooperate with the edge 58 lower associated of the opening 54 of the sleeve 46 so as to axially immobilize the sleeve 46 with respect to the guide 16.
  • the flexible tabs 70 are locked in the openings 54 after engagement so as to obtain a non-removable fixing between the guide 16 and the sleeve 46.
  • said flexible tabs 70 are, in the assembled position of the sleeve 46 with the guide 16, included radially inside the external diameter D of the sleeve 46.
  • the external diameter of the guide 16 at the level of said flexible tabs 70 is, in the assembled position, less than or equal to the external diameter D of the sleeve 46.
  • the flexible tabs 70 therefore do not project radially outwards beyond the openings 54 and consequently do not modify the external diameter D of the sleeve 46 defined by the cylindrical external surface 52.
  • the fixing by elastic interlocking does not affect the general bulk of the mechanism 10, said mechanism 10 thus maintaining the same external diameter D as before.
  • the external diameter of the guide 16 radially has an extremum which is less than or equal to the external diameter D of the sleeve 46, most particularly at the level of the head 18 and including that of the collar 22.
  • the locking finger 68 is arranged axially below and aligned with one of the flexible tabs 70 forming the fixing means, as is the notch 60 with one of the openings 54.
  • the means for locking in rotation are configured to angularly index with respect to the axis O the position of the sleeve 46 relative to the head 18 of the guide 16 so as to position each of the openings 54 radially in vis-à-vis the free end 72 of one of said flexible tabs 70.
  • the openings 54 are then also correctly positioned so that the free ends 72 of each of the elastically deformable flexible tabs 70 engage radially. in the corresponding opening 54.
  • the head 18 of the guide 16 has an upper end which, interrupted by the cutouts 76 made for the two flexible tabs 70, mainly consists of two parts 80 which circumferentially define a central orifice 82 of the guide 16.
  • the head 18 of the guide 16 comprises at least two ribs 84 for guiding the sleeve 46.
  • the guide ribs 84 make it possible to axially guide the sleeve 46 during its assembly on the head 18 of the guide 16, in particular when the assembly is carried out automatically by a machine.
  • the guide ribs 84 are radially in contact with the sleeve 46, which is thus mounted with a clamping allowing at the very least limiting the presence of clearances liable to cause incidents during assembly.
  • said ribs 84 are arranged diametrically opposite one another.
  • the two guide ribs 84 are angularly offset with respect to the flexible tabs 70, for example by an angle of 90 °.
  • the sleeve 46 is mounted tight on the head 18 of the guide 16 thanks in particular to said guide ribs 84.
  • the internal wall of the sleeve 46 also cooperates with other parts of the head 18 of the guide other than the guide ribs 84 alone.
  • the internal wall of the sleeve 46 advantageously cooperates with the two upper parts 80 and with a lower part of the head 18, said guide ribs 84 extending axially between one of the upper parts 80 and said lower part.
  • said lower part of the head 18 is located above the collar 22 and here comprises all or part of the finger 68 for locking in rotation.
  • the guide 16 is advantageously made of plastic.
  • the fixing means 70 formed by at least one flexible tab 70 as well as the locking means 68 formed by at least one finger 68 are made in one piece, integrally, with said guide 16.
  • plastic material is also advantageous in order to obtain flexible tabs 70 which are elastically deformable.
  • the flexible tabs 70 ensure, after assembly, a non-removable fixing of the sleeve 46 on the head 18 of the guide 16.
  • the head 18 of the guide 16 is configured so that the flexible tabs 70 have a radially "e" space relative to the cup 12 which is determined to obtain a non-removable fixing of the sleeve 46 with the guide 16.
  • said space "e” is determined to obtain a non-removable fixing between the sleeve 46 and the guide 16, the flexible tabs 70 not being able to disengage radially from the openings 54 once the cup 12 has been fitted as soon as the The space "e" is then insufficient.
  • the assembly of the cup 12 After having assembled the sleeve 46 and the guide 16 in order to fix them by elastic interlocking, the assembly of the cup 12 then locks the flexible tabs 70 in the fixing position.
  • the space “e” is insufficient for the tabs 70 to be able to move radially by disengaging from the openings 54 of the sleeve 46.
  • such a space “e” also makes it possible to avoid any contact of the flexible tabs 70 with the cup 12 thanks to which, in the absence of interference, the torque to be applied to cause the displacement of the cup 12 is not unaffected.
  • the elastic interlocking fixing means could have only one flexible tab 70.
  • said at least one lower face 78 for immobilizing said at least one flexible tab 70 forming the fixing means comprises at least one notch 86.
  • said lower face 78 for immobilizing the deformable flexible tab 70 comprises a plurality of parallel notches 86 intended to cooperate with the lower edge 58 of the opening 54 of the sleeve 46.

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Description

DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION

L'invention concerne un mécanisme pour un étui d'application d'un produit cosmétique, notamment un raisin de rouge à lèvres, et un étui comportant un tel mécanisme.The invention relates to a mechanism for a case for applying a cosmetic product, in particular a lipstick grape, and a case comprising such a mechanism.

L'invention concerne plus particulièrement un mécanisme pour un étui d'application d'un produit cosmétique, notamment un raisin de rouge à lèvres, présentant un axe principal, ledit mécanisme comportant au moins :

  • une cupule destinée à recevoir ledit produit cosmétique, ladite cupule comportant au moins un ergot ;
  • un guide comportant une tête que prolonge un corps à l'intérieur duquel la cupule est montée mobile, ledit corps du guide comportant au moins une glissière dans laquelle coulisse ledit au moins un ergot de la cupule,
  • une gaine montée autour du corps du guide et comportant au moins une rainure hélicoïdale avec laquelle coopère ledit au moins un ergot de la cupule en coulissant dans ladite au moins une glissière du guide lorsque la gaine est entraînée en rotation relativement au guide pour provoquer un mouvement axial de la cupule, et
  • un manchon destiné à s'étendre axialement autour du produit cosmétique, ledit manchon étant monté autour de ladite tête du guide à laquelle ledit manchon est fixé solidairement.
The invention relates more particularly to a mechanism for a case for applying a cosmetic product, in particular a lipstick grape, having a main axis, said mechanism comprising at least:
  • a cup intended to receive said cosmetic product, said cup comprising at least one lug;
  • a guide comprising a head extended by a body inside which the cup is movably mounted, said body of the guide comprising at least one slide in which slides said at least one lug of the cup,
  • a sheath mounted around the body of the guide and comprising at least one helical groove with which said at least one lug of the cup cooperates by sliding in said at least one slide of the guide when the sheath is rotated relative to the guide to cause movement axial of the cup, and
  • a sleeve intended to extend axially around the cosmetic product, said sleeve being mounted around said head of the guide to which said sleeve is fixedly attached.

L'invention concerne également un étui d'application d'un produit cosmétique comportant un capot, une base qui comporte un mécanisme selon l'invention.The invention also relates to a case for applying a cosmetic product comprising a cover, a base which comprises a mechanism according to the invention.

ÉTAT DE LA TECHNIQUESTATE OF THE ART

On connaît de l'état de la technique des exemples de mécanisme de ce type utilisé dans un étui pour le conditionnement d'un produit cosmétique, notamment mais non exclusivement pour un raisin de rouge à lèvres.Examples of a mechanism of this type used in a case for packaging a cosmetic product, in particular but not exclusively for a lipstick grape, are known from the state of the art.

Le mécanisme de l'étui permet de déplacer sélectivement le produit cosmétique entre une position escamotée et une position d'application dans laquelle le produit cosmétique est susceptible d'être appliqué par frottement.The mechanism of the case makes it possible to selectively move the cosmetic product between a retracted position and an application position in which the cosmetic product is capable of being applied by friction.

L'actionnement du mécanisme est généralement commandé manuellement en appliquant un mouvement de rotation à la base de l'étui, lequel mouvement de rotation est transmis au mécanisme pour provoquer le déplacement axial de la cupule comportant le produit cosmétique.The actuation of the mechanism is generally controlled manually by applying a rotational movement to the base of the case, which rotational movement is transmitted to the mechanism to cause the axial displacement of the cup containing the cosmetic product.

Un mécanisme du type décrit précédemment comportant un manchon est notamment mais non exclusivement utilisé lorsque le produit cosmétique présente une formulation dite « molle » (soft) à « très molle » (very soft). A mechanism of the type described above comprising a sleeve is in particular but not exclusively used when the cosmetic product has a so-called “soft” ( soft ) to “very soft” ( very soft ) formulation.

Avec de telles formulations, le produit cosmétique est alors directement en contact avec une partie de la paroi interne du manchon pour assurer son maintien.With such formulations, the cosmetic product is then directly in contact with part of the internal wall of the sleeve to ensure its retention.

En effet et par comparaison avec d'autres formulations, de telles formulations molles de produit cosmétique ne sont pas susceptibles d'être conditionnées sous la forme d'un bâton formant un raisin susceptible de présenter une tenue mécanique suffisante, en particulier lors de l'application du produit cosmétique.In fact, and by comparison with other formulations, such soft cosmetic product formulations are not capable of being packaged in the form of a stick forming a grape capable of exhibiting sufficient mechanical strength, in particular during processing. cosmetic product application.

C'est la raison pour laquelle, le produit cosmétique est alors entouré d'un manchon.This is the reason why the cosmetic product is then surrounded by a sleeve.

Le produit cosmétique est généralement coulé directement dans le manchon par exemple à travers la cupule du mécanisme.The cosmetic product is generally poured directly into the sleeve, for example through the cup of the mechanism.

On connaît différente conception pour intégrer un tel manchon, encore appelé « A-shell », dans un mécanisme.A different design is known for integrating such a sleeve, also called an “ A-shell ”, in a mechanism.

Selon une première conception, le manchon est réalisé en une seule pièce, monobloc, avec le guide du mécanisme.According to a first design, the sleeve is made in one piece, in one piece, with the guide of the mechanism.

Or le manchon est une pièce esthétique car un tel manchon est visible, puisque s'étendant hors de la base de l'étui à l'intérieur de laquelle le reste du mécanisme est logé.Now, the sleeve is an aesthetic part because such a sleeve is visible, since it extends outside the base of the case inside which the rest of the mechanism is housed.

C'est la raison pour laquelle, le manchon est généralement réalisé dans un matériau métallique, tel que de l'aluminium anodisé, pour préserver l'esthétisme de l'étui dont la base et le capot sont souvent réalisés dans des matériaux « précieux ».This is the reason why the sleeve is generally made of a metallic material, such as anodized aluminum, to preserve the aesthetics of the case, the base and cover of which are often made of "precious" materials. .

De plus, l'utilisation de matériau métallique pour le manchon améliore le refroidissement de la formulation de produit cosmétique après son coulage ainsi que son aspect, permettant notamment de réduire la durée du cycle de fabrication.In addition, the use of metallic material for the sleeve improves the cooling of the cosmetic product formulation after it has been poured as well as its appearance, making it possible in particular to reduce the duration of the manufacturing cycle.

De manière non limitative, le document FR-2.955.469 décrit un exemple de réalisation d'un mécanisme selon cette première conception.Without limitation, the document FR-2,955,469 describes an exemplary embodiment of a mechanism according to this first design.

Dans ce document, la partie supérieure du corps tubulaire constitue un manchon tandis que la partie inférieure constitue un guide pour une cupule réalisée en deux parties.In this document, the upper part of the tubular body constitutes a sleeve while the lower part constitutes a guide for a cup made in two parts.

En effet, la partie basse de la cupule qui, désignée dans le document comme étant la tige, est destinée à être liée à une partie haute désignée comme étant le godet.Indeed, the lower part of the cup which, designated in the document as being the rod, is intended to be linked to an upper part designated as being the cup.

Cette première conception en une seule pièce du manchon et du guide présente en outre l'inconvénient d'utiliser un même matériau toute la pièce.This first one-piece design of the sleeve and of the guide also has the drawback of using the same material throughout the entire piece.

Or, l'utilisation d'un matériau métallique pour l'ensemble de la pièce augmente les coûts dès lors que cela n'est pas nécessaire pour le guide, notamment en raison du fait que le guide n'est pas une pièce du mécanisme visible par l'utilisatrice d'un étui.However, the use of a metallic material for the whole of the part increases the costs since this is not necessary for the guide, in particular due to the fact that the guide is not a visible part of the mechanism. by the user of a case.

Selon une deuxième conception, le manchon et le guide sont réalisés sous la forme de deux pièces distinctes.According to a second design, the sleeve and the guide are made in the form of two separate parts.

Cette deuxième conception permet alors de choisir librement le matériau de chacune des pièces, typiquement un matériau métallique pour le manchon et un matériau plastique pour le guide du mécanisme.This second design then makes it possible to freely choose the material of each of the parts, typically a metallic material for the sleeve and a plastic material for the guide of the mechanism.

Dans une telle conception, les deux pièces doivent toutefois être liées solidairement l'une à l'autre.In such a design, however, the two parts must be integrally linked to one another.

On connaît de l'état de la technique différentes solutions pour lier solidairement ensemble le manchon et le guide, lesquelles solutions sont de réaliser une liaison par collage ou encore par sertissage.Various solutions are known from the state of the art for integrally bonding the sleeve and the guide together, which solutions are to achieve a bond by gluing or else by crimping.

De telles liaisons par collage ou par sertissage présentent l'avantage d'assurer simultanément une liaison axiale et une liaison en rotation entre le manchon et le guide.Such bonds by gluing or by crimping have the advantage of simultaneously ensuring an axial connection and a rotational connection between the sleeve and the guide.

Toutefois, chacune de ces solutions présente également des inconvénients, notamment des risques de pollution du produit cosmétique.However, each of these solutions also has drawbacks, in particular risks of pollution of the cosmetic product.

L'utilisation de colle induit des risques de pollution du produit cosmétique par la colle dont il est difficile de maîtriser avec une grande précision la quantité et la répartition lors de l'assemblage.The use of glue induces risks of pollution of the cosmetic product by the glue, the quantity and distribution of which is difficult to control with great precision during assembly.

Le poinçonnage conduit parfois à la formation de copeaux, notamment lorsque le manchon comporte un revêtement de finition déposé par anodisation. De plus, la réalisation d'un sertissage est une opération délicate à maîtriser, en particulier lorsque les deux pièces sont réalisées dans des matériaux différents avec un guide en matière plastique Il existe d'autres conceptions de mécanisme permettant une liaison entre le manchon et le guide, telle que celle, par exemple, décrite au document US 4,983,059A .Punching sometimes leads to the formation of chips, in particular when the sleeve has a finishing coating deposited by anodization. In addition, the production of a crimping is a delicate operation to master, in particular when the two parts are made of different materials with a plastic guide.There are other designs of mechanism allowing a connection between the sleeve and the guide, such as the one, for example, described in document US 4,983,059A .

Le but de l'invention est notamment de proposer une nouvelle conception de mécanisme permettant de résoudre au moins une partie des inconvénients de l'état de la technique tout en ayant une liaison entre le manchon et la guide qui soit avantageusement simple, fiable et économique.The aim of the invention is in particular to provide a novel mechanism design making it possible to resolve at least some of the drawbacks of the state of the art while having a connection between the sleeve and the guide which is advantageously simple, reliable and economical. .

BREF RESUME DE L'INVENTIONBRIEF SUMMARY OF THE INVENTION

Dans ce but, l'invention propose un mécanisme pour un étui d'application d'un produit cosmétique du type décrit précédemment, caractérisé en ce que la tête du guide comporte :

  • des moyens de fixation par emboîtement élastique configurés pour coopérer avec des moyens complémentaires du manchon afin d'immobiliser axialement ledit manchon par rapport au guide, et
  • des moyens de blocage en rotation, distincts desdits moyens de fixation par emboîtement élastique, destinés à coopérer avec des moyens complémentaires du manchon pour bloquer ledit manchon en rotation par rapport au guide.
To this end, the invention provides a mechanism for a case for applying a cosmetic product of the type described above, characterized in that the head of the guide comprises:
  • elastic interlocking fixing means configured to cooperate with complementary means of the sleeve in order to axially immobilize said sleeve with respect to the guide, and
  • rotation locking means, separate from said elastic interlocking fixing means, intended to cooperate with complementary means of the sleeve to lock said sleeve in rotation with respect to the guide.

Avantageusement, le mécanisme comporte des moyens de fixation par emboîtement élastique pour immobiliser axialement ledit manchon par rapport au guide et des moyens de blocage en rotation pour bloquer ledit manchon en rotation par rapport au guide.Advantageously, the mechanism comprises elastic interlocking fixing means for axially immobilizing said sleeve with respect to the guide and means for locking in rotation for locking said sleeve in rotation with respect to the guide.

De tels moyens de fixation par emboîtement élastique sont respectivement portés par le guide et le manchon destinés à être immobilisés axialement ensemble.Such elastic interlocking fixing means are respectively carried by the guide and the sleeve intended to be immobilized axially together.

Avantageusement, les moyens de fixation par emboîtement élastique intervenant entre le guide et le manchon sont configurés pour obtenir une fixation non démontable.Advantageously, the elastic interlocking fixing means intervening between the guide and the sleeve are configured to obtain a non-removable fixing.

Les moyens de fixation par emboîtement élastique selon l'invention permettent de garantir la fixation du manchon et du guide, tout particulièrement une bonne résistance en cas d'application d'un effort de traction axialement vers le haut qui serait par exemple exercé sur le manchon tandis que le guide serait maintenu.The elastic interlocking fixing means according to the invention make it possible to guarantee the fixing of the sleeve and of the guide, very particularly good resistance in the event of application of a tensile force axially upwards which would for example be exerted on the sleeve. while the guide would be maintained.

Selon l'invention, les moyens de blocage en rotation du manchon sont des moyens distincts desdits moyens de fixation par emboîtement élastique.According to the invention, the means for blocking the sleeve in rotation are means distinct from said fixing means by elastic interlocking.

Chacune des fonctions de blocage du manchon par rapport au guide, respectivement axial et en rotation, est par conséquent assurée par des moyens différents.Each of the functions of locking the sleeve with respect to the guide, respectively axial and in rotation, is therefore provided by different means.

Avantageusement, le guide est réalisé en matière plastique de sorte que ladite au moins une patte flexible formant les moyens de fixation et les moyens de blocage sont réalisés en une seule pièce, venus de matière, avec ledit guide.Advantageously, the guide is made of plastic material so that said at least one flexible tab forming the fixing means and the locking means are made in one piece, integrally, with said guide.

De préférence, lesdits moyens de fixation par emboîtement élastique comportent au moins deux pattes flexibles qui sont agencées sur la tête du guide, diamétralement à l'opposé l'une de l'autre afin notamment d'équilibrer les efforts d'immobilisation.Preferably, said elastic interlocking fixing means comprise at least two flexible tabs which are arranged on the head of the guide, diametrically opposite one another in order in particular to balance the immobilization forces.

Avantageusement, le manchon est réalisé dans un matériau métallique, tel que de l'aluminium anodisé.Advantageously, the sleeve is made of a metallic material, such as anodized aluminum.

Selon d'autres caractéristiques de l'invention : According to other characteristics of the invention :

  • lesdits moyens de fixation par emboîtement élastique comportent au moins une patte flexible déformable élastiquement selon une direction radiale, ladite au moins une patte flexible comportant une extrémité libre qui est reçue dans une ouverture associée du manchon pour immobiliser axialement ledit manchon par rapport au guide ;said elastic interlocking fixing means comprise at least one flexible tab elastically deformable in a radial direction, said at least one flexible tab comprising a free end which is received in an associated opening of the sleeve to axially immobilize said sleeve relative to the guide;
  • lesdits moyens de fixation par emboîtement élastique comportent au moins deux pattes flexibles déformables élastiquement selon une direction radiale ;said elastic interlocking fixing means comprise at least two flexible tabs elastically deformable in a radial direction;
  • ladite au moins une patte flexible s'étend suivant une direction axiale ;said at least one flexible tab extends in an axial direction;
  • l'extrémité libre de ladite au moins une patte flexible comporte une face supérieure d'assistance configurée pour faciliter la déformation élastique de ladite patte, radialement vers l'intérieur, lorsque le manchon coopère avec ladite face supérieure d'assistance lors de l'assemblage axial dudit manchon avec le guide ;the free end of said at least one flexible tab comprises an upper assisting face configured to facilitate the elastic deformation of said tab, radially inwardly, when the sleeve cooperates with said upper assisting face during assembly axial of said sleeve with the guide;
  • ladite au moins une patte flexible est rappelée élastiquement, radialement vers l'extérieur, de manière à venir se loger automatiquement dans ladite ouverture associée du manchon lors de l'assemblage axial dudit manchon avec le guide ;said at least one flexible tab is elastically biased, radially outwardly, so as to come to be housed automatically in said associated opening of the sleeve during the axial assembly of said sleeve with the guide;
  • l'extrémité libre de ladite au moins une patte flexible comporte au moins une face inférieure d'immobilisation configurée pour coopérer avec un bord associé de l'ouverture du manchon de manière à immobiliser axialement le manchon par rapport au guide ;the free end of said at least one flexible tab comprises at least one lower immobilizing face configured to cooperate with an associated edge of the opening of the sleeve so as to axially immobilize the sleeve with respect to the guide;
  • ladite au moins une face inférieure d'immobilisation comporte au moins un cran ;said at least one lower immobilization face comprises at least one notch;
  • le diamètre externe du guide au niveau de ladite au moins une patte flexible est, en position assemblée, inférieur ou égal au diamètre externe du manchon ;the external diameter of the guide at the level of said at least one flexible tab is, in the assembled position, less than or equal to the external diameter of the sleeve;
  • la tête du guide comporte une collerette radiale comportant une face supérieure qui forme une butée axiale pour le manchon lors de son assemblage avec le guide ;the head of the guide comprises a radial flange comprising an upper face which forms an axial stop for the sleeve during its assembly with the guide;
  • la tête du guide comporte au moins deux nervures de guidage du manchon ;the head of the guide comprises at least two guide ribs for the sleeve;
  • lesdites au moins deux nervures de guidage étant préférentiellement agencées diamétralement à l'opposé l'une de l'autre.said at least two guide ribs being preferably arranged diametrically opposite one another.
  • la tête du guide est configurée pour que ladite au moins une patte flexible présente radialement par rapport à la cupule un espace qui est déterminé pour obtenir une fixation non démontable du manchon sur la tête du guide ;the head of the guide is configured so that said at least one flexible tab has, radially with respect to the cup, a space which is determined to obtain a non-removable fixing of the sleeve on the head of the guide;
  • les moyens de blocage en rotation sont configurés pour indexer la position du manchon relativement à la tête du guide de manière à positionner angulairement chacune des ouvertures radialement en vis-à-vis de l'extrémité libre de ladite au moins une patte flexible ;the rotation locking means are configured to index the position of the sleeve relative to the head of the guide so as to angularly position each of the openings radially vis-à-vis the free end of said at least one flexible tab;
  • les moyens de blocage en rotation comportent au moins un doigt axial qui, en position assemblée, est reçu dans une encoche du manchon.the means for locking in rotation comprise at least one axial finger which, in the assembled position, is received in a notch of the sleeve.

L'invention propose également un étui d'application d'un produit cosmétique comportant un capot, une base qui comporte un mécanisme selon l'invention, caractérisé en ce que la gaine du mécanisme est liée en rotation à la base de l'étui.The invention also provides a case for applying a cosmetic product comprising a cover, a base which comprises a mechanism according to the invention, characterized in that the sheath of the mechanism is connected in rotation to the base of the case.

Avantageusement, la gaine du mécanisme est liée en rotation à la base de l'étui par coopération de formes.Advantageously, the sheath of the mechanism is connected in rotation to the base of the case by cooperation of shapes.

De préférence, la gaine du mécanisme et la base de l'étui sont liées en rotation par l'intermédiaire de moyens d'engrènement complémentaires disposés sur chacune des pièces.Preferably, the sheath of the mechanism and the base of the case are linked in rotation by means of complementary engagement means arranged on each of the parts.

Les moyens d'engrènement sont par exemple constitués par des cannelures qui, solidaires de la base de l'étui, sont destinées à coopérer avec des stries portées par une molette ménagée sur la gaine du mécanisme.The engagement means are for example formed by grooves which, integral with the base of the case, are intended to cooperate with grooves carried by a wheel formed on the sheath of the mechanism.

Avantageusement, en position assemblée, les pattes flexibles ne sont pas en contact avec la cupule de manière à éviter toute interférence susceptible de modifier le couple de rotation à appliquer sur la base pour provoquer le déplacement axial de la cupule.Advantageously, in the assembled position, the flexible tabs are not in contact with the cup so as to avoid any interference liable to modify the torque to be applied to the base in order to cause the axial displacement of the cup.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE 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 dans lesquels :

  • la figure 1 est une vue en éclaté qui représente un exemple d'un étui d'application pour un produit cosmétique et qui illustre les différentes pièces d'un mécanisme selon un mode de réalisation de l'invention ;
  • les figures 2 et 3 sont des vues en coupe axiale respectivement selon le plan II-II et le plan III-III qui représentent un étui selon la figure 1 avec le capot en position fermée et qui en illustrent, après assemblage, le mécanisme comportant un guide dont la tête comporte des moyens de fixation et des moyens de blocage en rotation pour lier solidairement ensemble ledit guide au manchon ;
  • la figure 4 est une vue en éclaté qui représente en perspective uniquement le manchon et le guide et qui illustre en partie les moyens de fixation formés par une paire de pattes flexibles déformables élastiquement selon la direction radiale et les moyens de blocage en rotation complémentaires ;
  • la figure 5 est une vue en perspective qui représente en détail l'extrémité libre de l'une des pattes flexibles de la tête du guide qui est engagée dans l'ouverture associée du manchon et qui illustre d'une part la coopération entre la face inférieure d'immobilisation de la patte et le bord inférieur associé de l'ouverture pour immobiliser axialement le manchon par rapport au guide et, d'autre part, la coopération entre le doigt de blocage en rotation solidaire du guide et l'encoche associée du manchon ;
  • la figure 6 est une vue de côté qui représente le manchon et le guide selon la figure 4 après assemblage et qui illustre le fait que les pattes flexibles ne s'étendent pas en saillie au-delà des ouvertures de manière à ne pas modifier le diamètre externe du manchon du mécanisme ;
  • la figure 7 est une vue en coupe selon le plan radial VII-VII représenté sur la figure 6 et illustre les pattes flexibles qui sont comprises dans l'encombrement du diamètre D du manchon ;
  • la figure 8 est une vue en perspective qui représente une variante de réalisation dans laquelle chacune des pattes flexibles est munie d'une série de crans et qui illustre l'extrémité libre crantée d'une des pattes flexibles engagée dans l'une associée des ouvertures du manchon ;
  • la figure 9 est une vue en coupe axiale selon le plan IX-IX indiqué sur la figure 8 qui représente ladite variante du mode de réalisation représenté aux figures 1 à 7 et qui illustre la coopération entre l'un des crans d'une patte flexible et le bord inférieur de l'une des ouvertures du manchon.
Other characteristics and advantages of the invention will become apparent on reading the detailed description which follows, for the understanding of which reference is made to the appended drawings in which:
  • the figure 1 is an exploded view which shows an example of an application case for a cosmetic product and which illustrates the different parts of a mechanism according to one embodiment of the invention;
  • the figures 2 and 3 are views in axial section respectively along the plane II-II and the plane III-III which represent a case according to the figure 1 with the cover in the closed position and which illustrate, after assembly, the mechanism comprising a guide, the head of which comprises fixing means and means for locking in rotation for integrally connecting said guide to the sleeve;
  • the figure 4 is an exploded view which shows in perspective only the sleeve and the guide and which partly illustrates the fixing means formed by a pair of flexible lugs elastically deformable in the radial direction and the complementary rotational locking means;
  • the figure 5 is a perspective view which shows in detail the free end of one of the flexible tabs of the head of the guide which is engaged in the associated opening of the sleeve and which illustrates, on the one hand, the cooperation between the lower face of the guide. immobilization of the tab and the associated lower edge of the opening to axially immobilize the sleeve relative to the guide and, on the other hand, the cooperation between the rotational locking finger integral with the guide and the associated notch of the sleeve;
  • the figure 6 is a side view which shows the sleeve and the guide according to the figure 4 after assembly and which illustrates the fact that the flexible tabs do not project beyond the openings so as not to modify the external diameter of the sleeve of the mechanism;
  • the figure 7 is a sectional view along the radial plane VII-VII shown in figure 6 and illustrates the flexible tabs which are included in the overall dimensions of the diameter D of the sleeve;
  • the figure 8 is a perspective view which shows an alternative embodiment in which each of the flexible legs is provided with a series of notches and which illustrates the free end notched of one of the flexible tabs engaged in one associated of the openings of the sleeve;
  • the figure 9 is an axial sectional view along the plane IX-IX indicated on the figure 8 which represents said variant of the embodiment shown in figures 1 to 7 and which illustrates the cooperation between one of the notches of a flexible tab and the lower edge of one of the openings of the sleeve.

DESCRIPTION DETAILLEE DES FIGURESDETAILED DESCRIPTION OF THE FIGURES

Par convention, la direction « axiale » correspond à celle de l'axe O principal représenté sur les figures et la direction « radiale » est orthogonale à la direction axiale.By convention, the “axial” direction corresponds to that of the main axis O shown in the figures and the “radial” direction is orthogonal to the axial direction.

Dans la description détaillée des figures qui suit, on utilisera de manière non limitative les termes « supérieur » et « inférieur » ou encore « haut » et « bas » en référence à la direction axiale.In the detailed description of the figures which follows, the terms “upper” and “lower” or even “top” and “bottom” will be used without limitation with reference to the axial direction.

De la même manière, les termes « extérieur ou externe » et « intérieur ou interne » sont utilisés en référence à la direction radiale, un élément extérieur étant radialement plus éloigné de l'axe O qu'un élément intérieur.Likewise, the terms “exterior or exterior” and “interior or interior” are used with reference to the radial direction, an exterior element being radially further from the axis O than an interior element.

On a représenté sur les figures 1 à 3, un exemple de réalisation d'un étui 100 d'application d'un produit cosmétique (non représenté).We have represented on the figures 1 to 3 , an exemplary embodiment of a case 100 for applying a cosmetic product (not shown).

Dans l'exemple de réalisation, le produit cosmétique est un raisin de rouge à lèvres destiné à être appliqué par frottement, en variante un baume de soin labial.In the exemplary embodiment, the cosmetic product is a lipstick grape intended to be applied by rubbing, as a variant a lip care balm.

L'étui 100 comporte au moins un capot 102 qui est associé à une base 104 présentant une forme complémentaire. L'étui 100 présente un axe O principal qui s'étend selon la direction axiale.The case 100 comprises at least one cover 102 which is associated with a base 104 having a complementary shape. The case 100 has a main axis O which extends in the axial direction.

De manière non limitative, le capot 102 et la base 104 de l'étui 100 présentent une forme cylindrique de section circulaire notamment illustrée par la figure 1.In a non-limiting manner, the cover 102 and the base 104 of the case 100 have a cylindrical shape of circular section, in particular illustrated by the figure 1 .

De préférence, le capot 102 est amovible formant une pièce totalement indépendante de la base 104.Preferably, the cover 102 is removable forming a part completely independent of the base 104.

Le capot 102 est susceptible d'occuper au moins une position d'ouverture (non représentée) dans laquelle le capot 102 est séparé de la base 104 en vue notamment de permettre l'application du produit cosmétique.The cover 102 is capable of occupying at least one open position (not shown) in which the cover 102 is separated from the base 104 with a view in particular to allowing the application of the cosmetic product.

Le capot 102 est susceptible d'occuper une position de fermeture illustrée par les figures 2 et 3 dans laquelle le capot 102 est solidaire de la base 104.The cover 102 is capable of occupying a closed position illustrated by the figures 2 and 3 in which the cover 102 is integral with the base 104.

La partie inférieure du capot 102 comporte à l'intérieur au moins un bourrelet 106 annulaire.The lower part of the cover 102 has at least one annular bead 106 inside.

De préférence, ledit au moins un bourrelet 106 est reçu dans une rainure 108 annulaire par exemple ménagée dans une surface cylindrique externe d'une partie 110 supérieure de la base 104.Preferably, said at least one bead 106 is received in an annular groove 108, for example formed in an external cylindrical surface of an upper part 110 of the base 104.

En variante, ledit au moins un bourrelet 106 coopère avec la surface cylindrique externe d'une partie 110 supérieure de la base 104.As a variant, said at least one bead 106 cooperates with the external cylindrical surface of an upper part 110 of the base 104.

Le bourrelet 106 annulaire est notamment visible sur la figure 1 grâce à la mise en transparence du capot 102.The annular bead 106 is notably visible on the figure 1 thanks to the transparency of the cover 102.

Avantageusement, le bourrelet 106 annulaire assure le maintien axial du capot 102 sur la base 104 en position de fermeture.Advantageously, the annular bead 106 ensures the axial retention of the cover 102 on the base 104 in the closed position.

Avantageusement, le bourrelet 106 annulaire participe à l'obtention d'une fermeture étanche à l'air afin de garantir une bonne conservation du produit cosmétique.Advantageously, the annular bead 106 participates in obtaining an airtight closure in order to guarantee good conservation of the cosmetic product.

La base 104 comporte un épaulement 112 qui s'étend radialement au niveau du raccordement de la partie 110 supérieure de la base 104 avec une partie 114 inférieure de plus grand diamètre.The base 104 comprises a shoulder 112 which extends radially at the level of the connection of the upper part 110 of the base 104 with a lower part 114 of larger diameter.

Le capot 102 comporte un bord 116 inférieur qui est susceptible de venir en butée contre ledit épaulement 112 en position de fermeture.The cover 102 has a lower edge 116 which is capable of abutting against said shoulder 112 in the closed position.

Le capot 102 et la base 104 sont des pièces creuses, le capot 102 est fermé à son extrémité supérieure par une paroi 117 sommitale tandis que la base 104 est fermée à son extrémité inférieure par un fond 118.The cover 102 and the base 104 are hollow parts, the cover 102 is closed at its upper end by a top wall 117 while the base 104 is closed at its lower end by a bottom 118.

Avantageusement, le fond 118 comporte un orifice 119 central pour le coulage à chaud du produit cosmétique.Advantageously, the bottom 118 comprises a central orifice 119 for the hot casting of the cosmetic product.

Le diamètre de l'orifice 119 est déterminé pour permettre l'introduction axiale d'une canule pour le coulage à chaud du produit cosmétique.The diameter of the orifice 119 is determined to allow the axial introduction of a cannula for the hot casting of the cosmetic product.

La partie 114 inférieure de la base 104 comporte intérieurement une partie des moyens 120 d'engrènement.The lower part 114 of the base 104 internally comprises a part of the engagement means 120.

Dans l'exemple, les moyens 120 d'engrènement sont en outre formés par des cannelures 122 axiales faisant saillies par rapport à une paroi 124 cylindrique interne de la partie 114 inférieure de la base 104, l'ensemble étant visible sur la figure 1 grâce à une mise en transparence de la base 104.In the example, the engagement means 120 are further formed by axial grooves 122 projecting relative to an internal cylindrical wall 124 of the lower part 114 of the base 104, the assembly being visible on the side. figure 1 by making the base 104 transparent.

De préférence, les cannelures 122 axiales sont réparties circonférentiellement en deux secteurs diamétralement opposés, chaque secteur cannelé comportant par exemple ici cinq cannelures 122.Preferably, the axial splines 122 are distributed circumferentially in two diametrically opposed sectors, each splined sector comprising for example here five splines 122.

En variante, l'ensemble de la paroi 124 cylindrique interne de la partie 114 inférieure de la base 104 comporte circonférentiellement des cannelures 122.As a variant, the entire internal cylindrical wall 124 of the lower part 114 of the base 104 circumferentially comprises grooves 122.

L'étui 100 qui vient d'être décrit est destiné à recevoir un mécanisme 10 pour la distribution du produit cosmétique.The case 100 which has just been described is intended to receive a mechanism 10 for dispensing the cosmetic product.

Le mécanisme 10 est destiné à pouvoir être changé, notamment mais non exclusivement après l'utilisation complète du produit cosmétique, de manière à pouvoir continuer d'utiliser l'étui 100 avec un nouveau mécanisme 10 formant une recharge.The mechanism 10 is intended to be able to be changed, in particular but not exclusively after the complete use of the cosmetic product, so as to be able to continue using the case 100 with a new mechanism 10 forming a refill.

Un tel mécanisme 10 et son fonctionnement général sont connus de l'état de la technique, tout particulièrement pour la distribution de produit cosmétique tel qu'un raisin de rouge à lèvres.Such a mechanism 10 and its general operation are known from the state of the art, more particularly for the dispensing of a cosmetic product such as a lipstick grape.

Le mécanisme 10 décrit ci-après n'est toutefois donné qu'à titre d'exemple non limitatif.The mechanism 10 described below is however given only by way of non-limiting example.

Le mécanisme 10 comporte une cupule 12 destinée à recevoir au moins une partie dudit produit cosmétique.The mechanism 10 comprises a cup 12 intended to receive at least part of said cosmetic product.

Dans l'exemple, la cupule 12 est réalisée en une seule pièce et présente une forme générale tubulaire s'étendant axialement et respectivement délimitée par un bord 13 supérieur et par un bord 15 inférieur.In the example, the cup 12 is made in one piece and has a generally tubular shape extending axially and respectively delimited by an upper edge 13 and by a lower edge 15.

Comme l'orifice 119 central de la base 104 de l'étui 100, la cupule 12 comporte centralement un passage dont l'entrée est délimitée circonférentiellement par le bord 15 et à travers lequel s'effectue le coulage à chaud du produit cosmétique.Like the central orifice 119 of the base 104 of the case 100, the cup 12 centrally comprises a passage whose entrance is delimited circumferentially by the edge 15 and through which the hot casting of the cosmetic product takes place.

Le mécanisme 10 étant monté dans la base 104, l'étui 100 est par exemple retourné de manière à l'orienter avec le fond 118 en haut afin de réaliser ensuite le coulage à chaud du produit cosmétique axialement du haut vers le bas, c'est à dire avantageusement avec l'aide de la gravité.The mechanism 10 being mounted in the base 104, the case 100 is for example turned over so as to orient it with the bottom 118 upwards in order to then perform the hot casting of the cosmetic product axially from top to bottom, that is, ie advantageously with the help of gravity.

Le coulage à chaud du produit cosmétique est généralement effectué au moyen d'une canule, dont l'extrémité libre est de préférence introduite à travers l'orifice 119 puis à travers la cupule 12 jusqu'à un manchon du mécanisme 10 qui sera décrit ultérieurement.The hot casting of the cosmetic product is generally carried out by means of a cannula, the free end of which is preferably introduced through the orifice 119 then through the cup 12 to a sleeve of the mechanism 10 which will be described later. .

La cupule 12 comporte au moins un ergot 14, préférentiellement ici deux ergots 14 qui, diamétralement opposés, font saillis radialement vers l'extérieur.The cup 12 comprises at least one lug 14, preferably here two lugs 14 which, diametrically opposed, project radially outwards.

De préférence, les ergots 14 présentent en section un profil non-circulaire. Avantageusement, les ergots 14 comportent au moins un méplat destiné à coopérer avec au moins une rainure hélicoïdale d'une gaine qui sera décrite ultérieurement.Preferably, the lugs 14 have a non-circular profile in section. Advantageously, the lugs 14 comprise at least one flat intended to cooperate with at least one helical groove of a sheath which will be described later.

En variante non représentée, la cupule 12 est réalisée en deux parties respectivement une cupule supérieure destinée à recevoir le produit cosmétique et une cupule inférieure, encore appelée parfois « moteur de cupule ». La cupule inférieure comporte alors le ou les ergots 14 destinés à coopérer avec les autres pièces du mécanisme 10.In a variant not shown, the cup 12 is made in two parts, respectively an upper cup intended to receive the cosmetic product and a lower cup, also sometimes called "cup motor". The lower cup then comprises the lug (s) 14 intended to cooperate with the other parts of the mechanism 10.

Dans une telle variante, les deux parties de la cupule 12 sont assemblées solidairement l'une avec l'autre, par exemple par emboîtement élastique.In such a variant, the two parts of the cup 12 are assembled integrally with one another, for example by elastic interlocking.

La cupule 12 est destinée à être montée mobile axialement à l'intérieur d'un guide 16, respectivement entre au moins une position escamotée illustrée sur les figures 2 et 3 et une position d'application (non représentée).The cup 12 is intended to be mounted axially movable inside a guide 16, respectively between at least one retracted position illustrated on the figures 2 and 3 and an application position (not shown).

Le guide 16 constitue un premier élément du mécanisme 10 de distribution du produit cosmétique.The guide 16 constitutes a first element of the mechanism 10 for dispensing the cosmetic product.

Le guide 16 comporte principalement une partie supérieure, qui sera désignée ci-après comme étant une tête 18, et que prolonge axialement une partie inférieure, qui sera désignée ci-après comme étant un corps 20.The guide 16 mainly comprises an upper part, which will be referred to hereinafter as being a head 18, and which is axially extended by a lower part, which will be referred to hereinafter as being a body 20.

Le corps 20 s'étend axialement entre une collerette 22 et un rebord 24 inférieur, la collerette 22 assurant à son extrémité supérieure la jonction avec la tête 18.The body 20 extends axially between a flange 22 and a lower flange 24, the flange 22 providing at its upper end the junction with the head 18.

La collerette 22 et le rebord 24 s'étendent radialement en saillie vers l'extérieur par rapport à une surface 26 cylindrique externe du corps 20 du guide 16.The flange 22 and the flange 24 extend radially outwardly projecting from an outer cylindrical surface 26 of the body 20 of the guide 16.

Dans l'exemple, la collerette 22 est circonférentiellement continue et comporte une face 28 inférieure et une face supérieure 30.In the example, the collar 22 is circumferentially continuous and has a lower face 28 and an upper face 30.

Le corps 20 du guide 16 comporte au moins une glissière 32 qui s'étend axialement de manière rectiligne et dans laquelle coulisse axialement en fonctionnement l'un des ergots 14 de la cupule 12.The body 20 of the guide 16 comprises at least one slide 32 which extends axially in a rectilinear manner and in which one of the lugs 14 of the cup 12 slides axially in operation.

Dans l'exemple, le corps 20 du guide 16 comporte deux glissières 32 qui, diamétralement opposées, reçoivent chacune l'un des ergots 14 de la cupule 12 après son montage à l'intérieur du corps 20 du guide 16.In the example, the body 20 of the guide 16 comprises two slides 32 which, diametrically opposed, each receive one of the lugs 14 of the cup 12 after it has been mounted inside the body 20 of the guide 16.

Tel qu'illustré par la figure 4, l'une des glissières 32 est ouverte axialement à son extrémité inférieure, interrompant le rebord 24 du corps 20, pour permettre le montage de la cupule 12 à l'intérieur du guide 16, réalisé axialement par l'extrémité inférieure du corps 20 du guide 16.As illustrated by figure 4 , one of the slides 32 is open axially at its lower end, interrupting the rim 24 of the body 20, to allow the cup 12 to be fitted inside the guide 16, produced axially by the lower end of the body 20 of the guide 16.

Les glissières 32 comportent chacune deux bords rectilignes et parallèles qui s'étendent axialement suivant l'axe O.The slides 32 each have two rectilinear and parallel edges which extend axially along the axis O.

La tête 18 du guide 16 sera décrite en détail ultérieurement en référence au mode de réalisation selon l'invention.The head 18 of the guide 16 will be described in detail later with reference to the embodiment according to the invention.

Le mécanisme 10 comporte un deuxième élément formé par une gaine 34 présentant globalement une forme cylindrique.The mechanism 10 comprises a second element formed by a sheath 34 generally having a cylindrical shape.

La gaine 34 comporte axialement un rebord 36 à son extrémité supérieure et son extrémité inférieure formant une jupe est configurée pour former une molette 38 d'actionnement.The sheath 34 axially comprises a flange 36 at its upper end and its lower end forming a skirt is configured to form an actuating wheel 38.

La molette 38 comporte une surface cylindrique externe munie d'un ensemble de stries 40 qui s'étendent axialement, parallèlement les unes aux autres, ici sur toute la circonférence de la molette 38.The wheel 38 has an outer cylindrical surface provided with a set of ridges 40 which extend axially, parallel to each other, here over the entire circumference of the wheel 38.

Les stries 40 de la molette 38 de la gaine 34 du mécanisme 10 sont destinées à coopérer avec les cannelures 122 de la base 104 de l'étui 100.The ridges 40 of the wheel 38 of the sheath 34 of the mechanism 10 are intended to cooperate with the grooves 122 of the base 104 of the case 100.

Dans l'exemple, les stries 40 de la gaine 34 et les cannelures 122 de la base 104 constituent lesdits moyens 120 d'engrènement.In the example, the ridges 40 of the sheath 34 and the grooves 122 of the base 104 constitute said engagement means 120.

De préférence, la gaine 34 est montée axialement sur le corps 20 du guide 16 par emboîtement élastique.Preferably, the sheath 34 is mounted axially on the body 20 of the guide 16 by elastic interlocking.

La gaine 34 entoure le corps 20 du guide 16. La gaine 34 est bloquée axialement entre la face 28 inférieure de la collerette 22 du guide 16 qui forme une butée supérieure pour le rebord 36 de la gaine 34 et le rebord 24 inférieur du corps 20 du guide 16.The sheath 34 surrounds the body 20 of the guide 16. The sheath 34 is axially blocked between the lower face 28 of the flange 22 of the guide 16 which forms an upper stop for the rim 36 of the sheath 34 and the lower rim 24 of the body 20. of guide 16.

La gaine 34 comporte au moins une rainure 42 hélicoïdale ménagée dans une paroi 44 interne.The sheath 34 comprises at least one helical groove 42 formed in an internal wall 44.

Dans l'exemple, la gaine 34 comporte deux rainures 42 hélicoïdales qui sont chacune destinées à coopérer avec l'un des ergots 14 de la cupule 12.In the example, the sheath 34 comprises two helical grooves 42 which are each intended to cooperate with one of the lugs 14 of the cup 12.

Les ergots 14 de la cupule 12 traversent radialement les glissières 32 axiales du guide 16 pour venir chacun coopérer avec l'une des rainures 42 hélicoïdales de la gaine 34.The lugs 14 of the cup 12 pass radially through the axial slides 32 of the guide 16 to each cooperate with one of the helical grooves 42 of the sheath 34.

Grâce aux moyens 120 d'engrènement, tout mouvement de rotation autour de l'axe O qui est appliqué par une utilisatrice sur la partie 114 inférieure de la base 104 est directement transmis au mécanisme 10, plus précisément transmis à la molette 38 de la gaine 34 du mécanisme 10.Thanks to the meshing means 120, any rotational movement around the axis O which is applied by a user to the lower part 114 of the base 104 is directly transmitted to the mechanism 10, more precisely transmitted to the wheel 38 of the sheath. 34 of mechanism 10.

L'entraînement en rotation de la gaine 34 provoque alors un déplacement axial en translation de la cupule 12 qui est ainsi commandée en déplacement entre les positions escamotée et d'application.The rotational drive of the sheath 34 then causes an axial translational movement of the cup 12 which is thus controlled in movement between the retracted and application positions.

De préférence, la gaine 34 comporte des moyens d'indexation angulaire tels qu'une entaille 45.Preferably, the sheath 34 comprises angular indexing means such as a notch 45.

Le mécanisme 10 comporte un manchon 46 destiné à s'étendre axialement autour du produit cosmétique. Le manchon 46 délimite un volume intérieur destiné à recevoir le produit cosmétique.The mechanism 10 comprises a sleeve 46 intended to extend axially around the cosmetic product. The sleeve 46 defines an internal volume intended to receive the cosmetic product.

Le mécanisme 10 selon l'exemple de réalisation illustré sur les figures est plus particulièrement destiné à recevoir un produit cosmétique présentant une formulation dite « molle » (soft) à « très molle » (very soft). The mechanism 10 according to the exemplary embodiment illustrated in the figures is more particularly intended to receive a cosmetic product having a so-called “soft” ( soft ) to “very soft” ( very soft ) formulation.

Dans le cas d'un produit cosmétique présentant une formulation dite « molle » (soft) à « très molle » (very soft), le produit cosmétique est en contact avec tout ou partie de la paroi interne du manchon 46.In the case of a cosmetic product having a formulation called "soft" (soft) "very soft" (very soft), the cosmetic product is in contact with all or part of the inner wall of sleeve 46.

Avantageusement, le manchon 46 assure le maintien dudit produit cosmétique.Advantageously, the sleeve 46 ensures the maintenance of said cosmetic product.

Tel qu'expliqué précédemment, le produit cosmétique est introduit à l'intérieur du manchon 46 lors du coulage à chaud dudit produit par exemple à travers l'orifice 119 puis la cupule 12 et enfin le manchon 46.As explained above, the cosmetic product is introduced inside the sleeve 46 during hot casting. of said product, for example through the orifice 119 then the cup 12 and finally the sleeve 46.

Avantageusement, le manchon 46 est réalisé dans un matériau métallique, tel que de l'aluminium anodisé.Advantageously, the sleeve 46 is made of a metallic material, such as anodized aluminum.

L'utilisation d'un matériau métallique pour réaliser le manchon 46 permet, en raison de la bonne conductivité thermique de tels matériaux, d'obtenir un refroidissement plus rapide du produit cosmétique coulé à chaud et remplissant le volume intérieur du manchon 46.The use of a metallic material to produce the sleeve 46 makes it possible, due to the good thermal conductivity of such materials, to obtain a faster cooling of the hot-cast cosmetic product and filling the internal volume of the sleeve 46.

Avantageusement, la réduction du temps de refroidissement permet de réduire la durée du cycle de fabrication et d'améliorer l'aspect du produit cosmétique, l'aspect étant notamment plus lisse.Advantageously, the reduction in the cooling time makes it possible to reduce the duration of the manufacturing cycle and to improve the appearance of the cosmetic product, the appearance being in particular smoother.

Le manchon 46 comporte un bord 48 supérieur, ici de forme biseautée et, axialement à l'opposé, un bord 50 inférieur de forme circulaire.The sleeve 46 has an upper edge 48, here of bevelled shape and, axially opposite, a lower edge 50 of circular shape.

Le manchon 46 présente une surface 52 cylindrique externe dans laquelle sont ménagées au moins une ouverture 54 destinée à permettre de lier solidairement le manchon 46 avec la tête 18 du guide 16.The sleeve 46 has an outer cylindrical surface 52 in which are formed at least one opening 54 intended to allow the sleeve 46 to be integrally connected with the head 18 of the guide 16.

Dans le mode de réalisation, le manchon 46 comporte deux ouvertures 54 qui sont agencées diamétralement à l'opposé l'une de l'autre.In the embodiment, the sleeve 46 has two openings 54 which are arranged diametrically opposite to each other.

L'ouverture 54 s'étend ici circonférentiellement suivant une forme globalement oblongue et est délimitée axialement par un bord 56 supérieur et un bord 58 inférieur qui, respectivement droit, sont plus particulièrement illustrés par les figures 4 et 5.The opening 54 here extends circumferentially in a generally oblong shape and is delimited axially by an upper edge 56 and a lower edge 58 which, respectively straight, are more particularly illustrated by the figures 4 and 5 .

Dans le mode de réalisation, le manchon 46 comporte au moins une encoche 60 qui est ouverte axialement vers le bas et débouche dans le bord 50 inférieur du manchon 46.In the embodiment, the sleeve 46 comprises at least one notch 60 which is open axially downwards and opens into the lower edge 50 of the sleeve 46.

L'encoche 60 présente globalement une forme en « U » inversé, l'encoche 60 comportant un premier bord 62 et un deuxième bord 64 qui s'étendent axialement et sont raccordés par un bord 66 supérieur, ici de forme curviligne.The notch 60 generally has an inverted "U" shape, the notch 60 having a first edge 62 and a second edge 64 which extend axially and are connected by an upper edge 66, here of curvilinear shape.

De préférence, l'encoche 60 est disposée axialement en dessous et alignée avec l'une des ouvertures 54 du manchon 46.Preferably, the notch 60 is disposed axially below and aligned with one of the openings 54 of the sleeve 46.

Selon un aspect de l'invention, la tête 18 du guide 16 comporte des moyens 68 de blocage en rotation destinés à coopérer avec des moyens 60 complémentaires du manchon 46 pour bloquer ledit manchon 46 en rotation par rapport au guide 16.According to one aspect of the invention, the head 18 of the guide 16 comprises means 68 for locking in rotation intended to cooperate with complementary means 60 of the sleeve 46 for locking said sleeve 46 in rotation with respect to the guide 16.

Dans le mode de réalisation illustré sur les figures, les moyens 68 de blocage comportent au moins un doigt qui est destiné à être reçu axialement dans ladite au moins une encoche 60 du manchon 46.In the embodiment illustrated in the figures, the locking means 68 comprise at least one finger which is intended to be received axially in said at least one notch 60 of the sleeve 46.

Le doigt 68 de blocage en rotation s'étend axialement vers le haut à partir de la surface 30 supérieure de la collerette 22 contre laquelle le bord 50 inférieur du manchon 46 est susceptible de venir en butée, notamment lors de l'assemblage.The rotational locking finger 68 extends axially upwards from the upper surface 30 of the flange 22 against which the lower edge 50 of the sleeve 46 is capable of abutting, in particular during assembly.

Tel qu'illustré par la figure 5 notamment, le doigt 68 du guide 16 présente une forme complémentaire de celle de l'encoche 60 du manchon 46.As illustrated by figure 5 in particular, the finger 68 of the guide 16 has a shape complementary to that of the notch 60 of the sleeve 46.

Selon un autre aspect de l'invention, la tête 18 du guide 16 comporte des moyens 70 de fixation par emboîtement élastique configurés pour coopérer avec des moyens 54 complémentaires du manchon 46 afin d'immobiliser axialement ledit manchon 46 par rapport au guide 16.According to another aspect of the invention, the head 18 of the guide 16 comprises fixing means 70 by elastic interlocking configured to cooperate with complementary means 54 of the sleeve 46 in order to axially immobilize said sleeve 46 with respect to the guide 16.

Conformément à l'invention, le mécanisme 10 comporte un guide 16 comportant des moyens 70 de fixation par emboîtement élastique configurés pour coopérer avec des moyens 54 complémentaires du manchon 46 afin d'immobiliser axialement ledit manchon 46 par rapport au guide 16, et des moyens 68 de blocage en rotation destinés à coopérer avec des moyens 60 complémentaires du manchon 46 pour bloquer ledit manchon 46 en rotation par rapport au guide 16.According to the invention, the mechanism 10 comprises a guide 16 comprising means 70 for fixing by elastic interlocking configured to cooperate with means 54 complementary to the sleeve 46 in order to axially immobilize said sleeve 46 with respect to the guide 16, and means 68 for locking in rotation intended to cooperate with complementary means 60 of the sleeve 46 for locking said sleeve 46 in rotation with respect to the guide 16.

Avantageusement, les moyens 70 de fixation sont constitués par au moins une patte flexible, déformable élastiquement selon la direction radiale, qui est destinée à coopérer avec une partie du manchon 54 pour immobiliser axialement ledit manchon 46 par rapport au guide 16.Advantageously, the fixing means 70 consist of at least one flexible tab, elastically deformable in the radial direction, which is intended to cooperate with a part of the sleeve 54 to axially immobilize said sleeve 46 relative to the guide 16.

De préférence, le doigt 68 de blocage est agencé axialement en dessous et aligné avec ladite au moins une patte 70 flexible afin notamment de faciliter le démoulage du guide 16 et plus particulièrement de la tête 18 formant sa partie supérieure.Preferably, the locking finger 68 is arranged axially below and aligned with said at least one flexible tab 70 in order in particular to facilitate the release of the guide 16 and more particularly of the head 18 forming its upper part.

Tel qu'indiqué précédemment, l'encoche 60 destinée à recevoir le doigt 68 de blocage est alors disposée axialement en dessous et alignée avec l'une des ouvertures 54 du manchon 46.As indicated above, the notch 60 intended to receive the locking finger 68 is then disposed axially below and aligned with one of the openings 54 of the sleeve 46.

De préférence, les moyens 70 de fixation comportent au moins deux pattes flexibles déformables élastiquement selon une direction radiale.Preferably, the fixing means 70 comprise at least two flexible tabs elastically deformable in a radial direction.

Tel qu'illustré par les figures 5 et 6, une patte 70 flexible comporte une extrémité 72 libre qui est reçue après assemblage dans l'une des ouvertures 54 associées du manchon 46 afin d'immobiliser axialement ledit manchon 46 par rapport au guide 16.As illustrated by figures 5 and 6 , a flexible tab 70 has a free end 72 which is received after assembly in one of the associated openings 54 of the sleeve 46 in order to axially immobilize said sleeve 46 with respect to the guide 16.

Selon l'invention, les moyens 68 de blocage en rotation du manchon 46 sont distincts des moyens 70 de fixation du manchon 46 formés préférentiellement par lesdites au moins deux pattes 70 flexibles.According to the invention, the means 68 for locking the sleeve 46 in rotation are distinct from the means 70 for fixing the sleeve 46 preferably formed by said at least two flexible tabs 70.

Dans le mode de réalisation, lesdites au moins deux pattes 70 flexibles sont agencées sur la tête 18 du guide 16 diamétralement à l'opposé l'une de l'autre.In the embodiment, said at least two flexible tabs 70 are arranged on the head 18 of the guide 16 diametrically opposite one another.

Avantageusement, la fixation du manchon 46 sur la tête 18 du guide 16 est réalisée par emboîtement élastique, ici par la coopération desdites pattes 70 flexibles solidaires de la tête 18 du guide 16 avec les ouvertures 54 du manchon 46.Advantageously, the fixing of the sleeve 46 on the head 18 of the guide 16 is carried out by elastic interlocking, here by the cooperation of said flexible tabs 70 integral with the head 18 of the guide 16 with the openings 54 of the sleeve 46.

La fixation par emboîtement élastique du manchon 46 sur la tête 18 du guide 16 offre une solution alternative au collage et/ou au sertissage selon l'état de la technique.The elastic interlocking fixing of the sleeve 46 on the head 18 of the guide 16 offers an alternative solution to gluing and / or crimping according to the state of the art.

Comme le guide 16 et le manchon 46 sont des pièces distinctes l'une de l'autre, chacune peut être avantageusement réalisée dans un matériau différent, préférentiellement métallique pour le manchon 46 et plastique pour le guide 16.As the guide 16 and the sleeve 46 are separate parts from one another, each can advantageously be made of a different material, preferably metallic for the sleeve 46 and plastic for the guide 16.

L'utilisation de matériau métallique pour le manchon 46 est avantageuse pour des raisons tant esthétique que technique, en particulier un meilleur refroidissement du produit cosmétique après coulage.The use of metallic material for the sleeve 46 is advantageous for both aesthetic and technical reasons, in particular better cooling of the cosmetic product after casting.

L'utilisation de matériau plastique pour le guide 16 est avantageuse pour des raisons techniques en permettant notamment une fabrication par moulage par injection en une seule pièce, ainsi que des raisons économiques.The use of plastic material for the guide 16 is advantageous for technical reasons, in particular allowing manufacture by injection molding in one piece, as well as for economic reasons.

Avantageusement, la fixation par emboîtement élastique du manchon 46 sur la tête 18 du guide 16 constitue une solution simple, fiable et économique pour lier axialement ensemble le manchon 46 et le guide 16 du mécanisme 10.Advantageously, the elastic interlocking fixing of the sleeve 46 on the head 18 of the guide 16 constitutes a simple, reliable and economical solution for axially connecting the sleeve 46 and the guide 16 of the mechanism 10 together.

Tel qu'illustré par les figures, lesdites au moins deux pattes 70 flexibles s'étendent avantageusement suivant une direction axiale, c'est-à-dire selon l'axe O du mécanisme 10, ladite direction axiale correspondant à la direction d'assemblage selon laquelle le manchon 46 et le guide 16 sont fixés ensemble.As illustrated by the figures, said at least two flexible tabs 70 advantageously extend in an axial direction, that is to say along the axis O of the mechanism 10, said axial direction corresponding to the assembly direction. according to which the sleeve 46 and the guide 16 are fixed together.

Avantageusement, l'extrémité 72 libre de chaque patte 70 flexible comporte au moins une face 74 supérieure d'assistance qui est configurée pour faciliter la déformation élastique de ladite patte 70, radialement vers l'intérieur, lors de l'assemblage du manchon 46 avec le guide 16 selon la direction axiale.Advantageously, the free end 72 of each flexible tab 70 comprises at least one upper assisting face 74 which is configured to facilitate the elastic deformation of said tab 70, radially inward, during assembly of the sleeve 46 with the guide 16 in the axial direction.

Lors de l'assemblage axial du manchon 46 avec le guide 16, le bord 50 inférieur du manchon 46 vient coopérer avec la face 74 supérieure d'assistance qui est inclinée pour provoquer, sous contrainte, son déplacement radialement vers l'intérieur.During the axial assembly of the sleeve 46 with the guide 16, the lower edge 50 of the sleeve 46 cooperates with the upper assistance face 74 which is inclined to cause, under stress, its displacement radially inward.

L'extrémité 72 libre de la patte 70 flexible présente en section une forme globalement triangulaire.The free end 72 of the flexible tab 70 has a generally triangular shape in section.

Avantageusement, la tête 18 du guide 16 comporte une découpe 76 pour permettre le débattement de chacune des pattes 70 flexibles radialement vers l'intérieur.Advantageously, the head 18 of the guide 16 has a cutout 76 to allow the movement of each of the flexible legs 70 radially inward.

La déformation élastique des pattes 70 flexibles selon la direction radiale lors de l'assemblage axial du manchon 46 avec le guide 16 est particulièrement avantageuse, permettant d'éviter toute détérioration desdites pattes 70 flexibles.The elastic deformation of the flexible tabs 70 in the radial direction during the axial assembly of the sleeve 46 with the guide 16 is particularly advantageous, making it possible to avoid any damage to said flexible tabs 70.

Plus précisément, le fait que les pattes 70 flexibles soient déformables élastiquement selon la direction radiale permet d'éviter que le bord 50 inférieur du manchon 46 ne vienne les détériorer lors de l'assemblage.More precisely, the fact that the flexible tabs 70 are elastically deformable in the radial direction makes it possible to prevent the lower edge 50 of the sleeve 46 from damaging them during assembly.

En effet, le manchon 46 réalisé préférentiellement dans un matériau métallique présente généralement une faible épaisseur, par exemple de l'ordre de 0,3 mm.Indeed, the sleeve 46 preferably made of a metallic material generally has a small thickness, for example of the order of 0.3 mm.

Ainsi, le bord 50 inférieur du manchon 46 forme à l'égard des pattes 70 un élément « tranchant » qui est susceptible de venir les « couper » ou « cisailler » lors de l'assemblage, à l'instar d'une lame.Thus, the lower edge 50 of the sleeve 46 forms with respect to the tabs 70 a “sharp” element which is capable of “cutting” or “shearing” them during assembly, like a blade.

Or, une telle détérioration des pattes 70 flexibles serait susceptible d'affecter ensuite la fiabilité de la fixation par emboîtement élastique du manchon 46 avec le guide 16.However, such deterioration of the flexible tabs 70 would then be liable to affect the reliability of the fixing by elastic interlocking of the sleeve 46 with the guide 16.

Après une phase initiale d'assemblage au cours de laquelle les pattes 70 flexibles sont contraintes radialement vers l'intérieur par le manchon 46, les pattes 70 flexibles sont ensuite rappelées élastiquement, radialement vers l'extérieur, dans une phase finale d'assemblage pour venir chacune se loger automatiquement dans l'une associée des ouvertures 54 du manchon 46.After an initial assembly phase during which the flexible tabs 70 are constrained radially inwardly by the sleeve 46, the flexible tabs 70 are then elastically biased, radially outward, in a final assembly phase to each come to be housed automatically in an associated one of the openings 54 of the sleeve 46.

Dans le mode de réalisation, l'extrémité 72 libre de chaque patte 70 flexible comporte au moins une face 78 inférieure d'immobilisation qui est configurée pour coopérer avec le bord 58 inférieur associé de l'ouverture 54 du manchon 46 de manière à immobiliser axialement le manchon 46 par rapport au guide 16.In the embodiment, the free end 72 of each flexible tab 70 comprises at least one lower immobilization face 78 which is configured to cooperate with the edge 58 lower associated of the opening 54 of the sleeve 46 so as to axially immobilize the sleeve 46 with respect to the guide 16.

Avantageusement, les pattes 70 flexibles sont verrouillées dans les ouvertures 54 après engagement de manière à obtenir une fixation non démontable entre le guide 16 et le manchon 46.Advantageously, the flexible tabs 70 are locked in the openings 54 after engagement so as to obtain a non-removable fixing between the guide 16 and the sleeve 46.

Tel qu'illustré sur les figures 6 et 7, lesdites pattes 70 flexibles sont, en position assemblée du manchon 46 avec le guide 16, comprises radialement à l'intérieur du diamètre D externe du manchon 46.As shown on figures 6 and 7 , said flexible tabs 70 are, in the assembled position of the sleeve 46 with the guide 16, included radially inside the external diameter D of the sleeve 46.

Avantageusement, le diamètre externe du guide 16 au niveau desdites pattes 70 flexibles est, en position assemblée, inférieur ou égal au diamètre D externe du manchon 46.Advantageously, the external diameter of the guide 16 at the level of said flexible tabs 70 is, in the assembled position, less than or equal to the external diameter D of the sleeve 46.

Les pattes 70 flexibles ne font donc pas saillies radialement vers l'extérieur au-delà des ouvertures 54 et ne modifient par conséquent pas le diamètre D externe du manchon 46 défini par la surface 52 externe cylindrique.The flexible tabs 70 therefore do not project radially outwards beyond the openings 54 and consequently do not modify the external diameter D of the sleeve 46 defined by the cylindrical external surface 52.

Avantageusement, la fixation par emboîtement élastique n'affecte pas l'encombrement général du mécanisme 10, ledit mécanisme 10 conservant ainsi le même diamètre D externe qu'auparavant.Advantageously, the fixing by elastic interlocking does not affect the general bulk of the mechanism 10, said mechanism 10 thus maintaining the same external diameter D as before.

Plus généralement, le diamètre externe du guide 16 présente radialement un extremum qui est inférieur ou égal au diamètre D externe du manchon 46, tout particulièrement au niveau de la tête 18 et y compris celui de la collerette 22.More generally, the external diameter of the guide 16 radially has an extremum which is less than or equal to the external diameter D of the sleeve 46, most particularly at the level of the head 18 and including that of the collar 22.

Dans le mode de réalisation et tel que décrit précédemment, le doigt 68 de blocage est agencé axialement en dessous et aligné avec l'une des pattes 70 flexibles formant les moyens de fixation tout comme l'est l'encoche 60 avec l'une des ouvertures 54.In the embodiment and as described above, the locking finger 68 is arranged axially below and aligned with one of the flexible tabs 70 forming the fixing means, as is the notch 60 with one of the openings 54.

Avantageusement, les moyens de blocage en rotation sont configurés pour indexer angulairement par rapport à l'axe O la position du manchon 46 relativement à la tête 18 du guide 16 de manière à positionner chacune des ouvertures 54 radialement en vis-à-vis de l'extrémité 72 libre de l'une desdites pattes 70 flexibles.Advantageously, the means for locking in rotation are configured to angularly index with respect to the axis O the position of the sleeve 46 relative to the head 18 of the guide 16 so as to position each of the openings 54 radially in vis-à-vis the free end 72 of one of said flexible tabs 70.

En effet, lorsque le doigt 68 de blocage du guide 16 est aligné axialement avec l'encoche 60 du manchon 46, les ouvertures 54 sont alors également correctement positionnées pour que les extrémités 72 libres de chacune des pattes 70 flexibles déformables élastiquement s'engagent radialement dans l'ouverture 54 correspondante.Indeed, when the locking finger 68 of the guide 16 is axially aligned with the notch 60 of the sleeve 46, the openings 54 are then also correctly positioned so that the free ends 72 of each of the elastically deformable flexible tabs 70 engage radially. in the corresponding opening 54.

La tête 18 du guide 16 comporte une extrémité supérieure qui, interrompue par les découpes 76 ménagées pour les deux pattes 70 flexibles, est principalement constituée de deux parties 80 qui délimitent circonférentiellement un orifice 82 central du guide 16.The head 18 of the guide 16 has an upper end which, interrupted by the cutouts 76 made for the two flexible tabs 70, mainly consists of two parts 80 which circumferentially define a central orifice 82 of the guide 16.

Tel qu'illustré sur les figures 2 et 3, l'orifice 82 central du guide 16 est traversé par la partie supérieure de la cupule 12.As shown on figures 2 and 3 , the central orifice 82 of the guide 16 is crossed by the upper part of the cup 12.

Avantageusement, la tête 18 du guide 16 comporte au moins deux nervures 84 de guidage du manchon 46.Advantageously, the head 18 of the guide 16 comprises at least two ribs 84 for guiding the sleeve 46.

Les nervures 84 de guidage permettent de guider axialement le manchon 46 lors de son assemblage sur la tête 18 du guide 16, en particulier lorsque l'assemblage est réalisé automatiquement par une machine.The guide ribs 84 make it possible to axially guide the sleeve 46 during its assembly on the head 18 of the guide 16, in particular when the assembly is carried out automatically by a machine.

Les nervures 84 de guidage sont radialement en contact avec le manchon 46, lequel est ainsi monté avec un serrage permettant de limiter à tout le moins la présence de jeux susceptibles de provoquer des incidents lors de l'assemblage.The guide ribs 84 are radially in contact with the sleeve 46, which is thus mounted with a clamping allowing at the very least limiting the presence of clearances liable to cause incidents during assembly.

De préférence, lesdites nervures 84 sont agencées diamétralement à l'opposé l'une de l'autre.Preferably, said ribs 84 are arranged diametrically opposite one another.

Dans le mode de réalisation, les deux nervures 84 de guidage sont décalées angulairement par rapport aux pattes 70 flexibles, par exemple d'un angle de 90°.In the embodiment, the two guide ribs 84 are angularly offset with respect to the flexible tabs 70, for example by an angle of 90 °.

Avantageusement, le manchon 46 est monté serré sur la tête 18 du guide 16 grâce notamment auxdites nervures 84 de guidage.Advantageously, the sleeve 46 is mounted tight on the head 18 of the guide 16 thanks in particular to said guide ribs 84.

De préférence, la paroi interne du manchon 46 coopère également avec d'autres parties de la tête 18 du guide que les seules nervures 84 de guidage.Preferably, the internal wall of the sleeve 46 also cooperates with other parts of the head 18 of the guide other than the guide ribs 84 alone.

Dans l'exemple de réalisation, la paroi interne du manchon 46 coopère avantageusement avec les deux parties 80 supérieures et avec une partie inférieure de la tête 18, lesdites nervures 84 de guidage s'étendant axialement entre l'une des parties 80 supérieures et ladite partie inférieure.In the exemplary embodiment, the internal wall of the sleeve 46 advantageously cooperates with the two upper parts 80 and with a lower part of the head 18, said guide ribs 84 extending axially between one of the upper parts 80 and said lower part.

Tel qu'illustré notamment sur la figure 4, ladite partie inférieure de la tête 18 est située au-dessus de la collerette 22 et comporte ici tout ou partie du doigt 68 de blocage en rotation.As illustrated in particular on the figure 4 , said lower part of the head 18 is located above the collar 22 and here comprises all or part of the finger 68 for locking in rotation.

Tel que décrit précédemment, le guide 16 est avantageusement réalisé en matière plastique.As described above, the guide 16 is advantageously made of plastic.

Les moyens 70 de fixation formés par au moins une patte 70 flexible ainsi que les moyens 68 de blocage formés par au moins un doigt 68 sont réalisés en une seule pièce, venus de matière, avec ledit guide 16.The fixing means 70 formed by at least one flexible tab 70 as well as the locking means 68 formed by at least one finger 68 are made in one piece, integrally, with said guide 16.

De plus, l'utilisation de matière plastique est également avantageuse pour obtenir des pattes 70 flexibles déformables élastiquement.In addition, the use of plastic material is also advantageous in order to obtain flexible tabs 70 which are elastically deformable.

Avantageusement, les pattes 70 flexibles assurent après assemblage une fixation non démontable du manchon 46 sur la tête 18 du guide 16.Advantageously, the flexible tabs 70 ensure, after assembly, a non-removable fixing of the sleeve 46 on the head 18 of the guide 16.

Tel qu'illustré sur la figure 7, la tête 18 du guide 16 est configurée pour que les pattes 70 flexibles présentent radialement un espace « e » par rapport à la cupule 12 qui est déterminé pour obtenir une fixation non démontable du manchon 46 avec le guide 16.As shown on the figure 7 , the head 18 of the guide 16 is configured so that the flexible tabs 70 have a radially "e" space relative to the cup 12 which is determined to obtain a non-removable fixing of the sleeve 46 with the guide 16.

Avantageusement, ledit espace « e » est déterminé pour obtenir une fixation non démontable entre le manchon 46 et le guide 16, les pattes 70 flexibles ne pouvant pas se dégager radialement des ouvertures 54 une fois le montage de la cupule 12 effectué dès lors que l'espace « e » est alors insuffisant.Advantageously, said space "e" is determined to obtain a non-removable fixing between the sleeve 46 and the guide 16, the flexible tabs 70 not being able to disengage radially from the openings 54 once the cup 12 has been fitted as soon as the The space "e" is then insufficient.

Après avoir procédé à l'assemblage du manchon 46 et du guide 16 pour les fixer par emboîtement élastique, le montage de la cupule 12 vient alors verrouiller les pattes 70 flexibles en position de fixation.After having assembled the sleeve 46 and the guide 16 in order to fix them by elastic interlocking, the assembly of the cup 12 then locks the flexible tabs 70 in the fixing position.

Une fois le montage de la cupule 12 effectué, l'espace « e » est insuffisant pour que les pattes 70 puissent se déplacer radialement en se désengageant hors des ouvertures 54 du manchon 46.Once the cup 12 has been fitted, the space “e” is insufficient for the tabs 70 to be able to move radially by disengaging from the openings 54 of the sleeve 46.

Avantageusement, un tel espace « e » permet également d'éviter tout contact des pattes 70 flexibles avec la cupule 12 grâce à quoi, en l'absence d'interférence, le couple à appliquer pour provoquer le déplacement de la cupule 12 n'est pas affecté.Advantageously, such a space "e" also makes it possible to avoid any contact of the flexible tabs 70 with the cup 12 thanks to which, in the absence of interference, the torque to be applied to cause the displacement of the cup 12 is not unaffected.

Le mode de réalisation qui vient d'être décrit en référence aux figures 1 à 7 est cependant donné à titre non limitatif.The embodiment which has just been described with reference to figures 1 to 7 is however given without limitation.

En particulier, les moyens de fixation par emboîtement élastique pourraient ne comporter qu'une seule patte 70 flexible.In particular, the elastic interlocking fixing means could have only one flexible tab 70.

En effet, les pattes 70 flexibles formant les moyens 70 de fixation par emboîtement élastique sont susceptibles d'être modifiées.In fact, the flexible tabs 70 forming the elastic interlocking fixing means 70 are liable to be modified.

Selon une variante du mode de réalisation représentée sur les figures 8 et 9, ladite au moins une face 78 inférieure d'immobilisation de ladite au moins une patte 70 flexible formant les moyens de fixation comporte au moins un cran 86.According to a variant of the embodiment shown in the figures 8 and 9 , said at least one lower face 78 for immobilizing said at least one flexible tab 70 forming the fixing means comprises at least one notch 86.

De préférence, ladite face 78 inférieure d'immobilisation de la patte 70 flexible déformable comporte une pluralité de crans 86 parallèles destinés à coopérer avec le bord 58 inférieur de l'ouverture 54 du manchon 46.Preferably, said lower face 78 for immobilizing the deformable flexible tab 70 comprises a plurality of parallel notches 86 intended to cooperate with the lower edge 58 of the opening 54 of the sleeve 46.

Claims (12)

  1. Mechanism (10) for a case (100) for applying a cosmetic product, in particular a stick of lipstick, having a main axis (O), said mechanism (10) comprising at least:
    - a cup (12) intended to receive said cosmetic product, said cup (12) comprising at least one lug (14),
    - a guide (16) comprising a head (18) extended by a body (20) inside which the cup (12) is mounted mobile, said body (20) of the guide (16) comprising at least one slide (32) wherein said at least one lug (14) of the cup (12) slides,
    - a sheath (34) mounted around the body (20) of the guide (16) and comprising at least one helical groove (42) with which said at least one lug (14) of the cup (12) co-operates by sliding in said at least one slide (32) of the guide (16) when the sleeve (34) is rotationally driven with respect to the guide (16) to cause an axial movement of the cup (12), and
    - a sleeve (46) intended to extend axially around the cosmetic product, said sleeve (46) being mounted around said head (18) of the guide (16) to which said sleeve (46) is securely fixed,
    characterised in that the head (18) of the guide (16) comprises
    - snap-fitting means (70) configured to co-operate with complementary means (54) of the sleeve (46) in order to immobilise axially said sleeve (46) with respect to the guide (16), and
    - rotational blocking means (68), distinct from said snap-fitting means (70), intended to co-operate with complementary means (60) of the sleeve (46) to block said sleeve (46) in rotation with respect to the guide (16).
  2. Mechanism according to claim 1, characterised in that said snap-fitting means (70) comprise at least one flexible tab (70), elastically deformable in a radial direction, said at least one flexible tab (70) comprising a free end (72) which is received in an associated opening (54) of the sleeve (46) to immobilise axially said sleeve (46) with respect to the guide (16).
  3. Mechanism according to claim 2, characterised in that said at least one flexible tab (70) extends according to an axial direction.
  4. Mechanism according to one of claims 2 or 3, characterised in that the free end (72) of said at least one flexible tab (70) comprises an upper assistance face (74) configured to facilitate the elastic deformation of said tab (70), radially inwards, when the sleeve (46) co-operates with said upper assistance face (74) during the axial assembly of said sleeve (46) with the guide (16).
  5. Mechanism according to any one of claims 2 to 4, characterised in that the free end (72) of said at least one flexible tab (70) comprises at least one lower immobilising face (78) configured to co-operate with an associated edge (58) of the opening (54) of the sleeve (46) so as to axially immobilise the sleeve (46) with respect to the guide (16).
  6. Mechanism according to claim 5, characterised in that said at least one said at least one lower immobilisation face (78) comprises at least one detent (86).
  7. Mechanism according to any one of claims 2 to 6, characterised in that the outer diameter of the guide (16) at the level of said at least one flexible tab (70) is, in the assembled position, less than or equal to the outer diameter (D) of the sleeve (46).
  8. Mechanism according to any one of claims 2 to 7, characterised in that the head (18) of the guide (16) is configured such that said at least one flexible tab (70) presents radially, with respect to the cup (12), a space (e) which is determined to obtain a non-demountable fixing of the sleeve (46) on the head (18) of the guide (16).
  9. Mechanism according to any one of claims 2 to 8, characterised in that the rotatably blocking means (68) are configured to index the position of the sleeve (46) with respect to the head (18) of the guide (16) so as to angularly position each of the openings (54) radially opposite the free end (72) of said at least one flexible tab (70).
  10. Mechanism according to any one of the preceding claims, characterised in that the rotatably blocking means (68) comprise at least one axial finger (68) which, in the assembled position, is received in a notch (60) of the sleeve (46).
  11. Mechanism according to any one of the preceding claims, characterised in that the head (18) of the guide (16) comprises at least two ribs (84) for guiding the sleeve (46).
  12. Case (100) for applying a cosmetic product comprising a cap (102), a base (104) which comprises a mechanism (10) according to any one of the preceding claims, characterised in that the sheath (34) of the mechanism (10) is rotatably linked to the base (104) of the case (100).
EP19157050.6A 2018-02-15 2019-02-14 Mechanism for a case for applying a cosmetic product, in particular a stick of lipstick, and case comprising such a mechanism Active EP3527104B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1851272A FR3077711A1 (en) 2018-02-15 2018-02-15 MECHANISM FOR A CASE FOR APPLICATION OF A COSMETIC PRODUCT, IN PARTICULAR A RED LIP RAISIN, AND CASE COMPRISING SUCH A MECHANISM

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EP3527104A1 EP3527104A1 (en) 2019-08-21
EP3527104B1 true EP3527104B1 (en) 2021-03-17

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US (1) US10959504B2 (en)
EP (1) EP3527104B1 (en)
CN (1) CN110150830B (en)
FR (1) FR3077711A1 (en)

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Also Published As

Publication number Publication date
FR3077711A1 (en) 2019-08-16
US10959504B2 (en) 2021-03-30
CN110150830A (en) 2019-08-23
EP3527104A1 (en) 2019-08-21
US20190246769A1 (en) 2019-08-15
CN110150830B (en) 2023-07-04

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