WO2017182445A1 - Device for a stick of cosmetic product, notably a lipstick - Google Patents

Device for a stick of cosmetic product, notably a lipstick Download PDF

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Publication number
WO2017182445A1
WO2017182445A1 PCT/EP2017/059133 EP2017059133W WO2017182445A1 WO 2017182445 A1 WO2017182445 A1 WO 2017182445A1 EP 2017059133 W EP2017059133 W EP 2017059133W WO 2017182445 A1 WO2017182445 A1 WO 2017182445A1
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WO
WIPO (PCT)
Prior art keywords
catching
stick
sheath
braking
axial
Prior art date
Application number
PCT/EP2017/059133
Other languages
French (fr)
Inventor
Frédéric LECUREUIL
Original Assignee
Albea Services
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 filed Critical Albea Services
Priority to CN201780024958.6A priority Critical patent/CN109068831A/en
Publication of WO2017182445A1 publication Critical patent/WO2017182445A1/en

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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

Definitions

  • the invention relates to a device for a stick of cosmetic product, in particular a stick of lipstick.
  • the invention more particularly relates to a device for a cosmetic product stick comprising at least a first element, a cup intended to receive the cosmetic product stick and a second element, the second element being snap-fitted on the first element with a set determined axial, in which the rotation of the first element relative to the second element causes axial movement of the cup.
  • the stick is held by its base in a cup which slides axially between at least one retracted position and a position of application of the cosmetic product in which at least a portion of the cosmetic product stick extends axially out of the device.
  • a rotary mechanism comprising a first element and a second element which, concentrically mounted, comprise for one at least one slide and for the other at least one helical groove which are respectively traversed radially by at least one lug integral with the cup carrying the stick.
  • the cup generally comprises a pair of lugs, the two lugs being arranged diametrically opposite to one another, the first element then being provided with two slides and the second element with two helical grooves.
  • the first element and the second element of such a device are made of plastic material and obtained by molding. To allow their snap-fitting assembly, dimension tolerances of said first and second elements are provided, which are such that there is then an axial clearance between each of these elements.
  • EP-0,844,837 describes for example a device
  • the axial play compensating means are in particular formed by elastic hoops carried by a crown intended to be attached to attachment to the first element.
  • the elastic hoops provide a dual function, on the one hand a function of catching axial play between the first element and the second element (called inner and outer sheath) and, secondly, a "soft" braking function when rotating the first element relative to the second element.
  • the accumulation by the hoops of the retrofit and braking functions does not make it possible to separately optimize the results obtained for each of these functions, in particular not the friction surfaces and the torque obtained with the braking means.
  • the object of the invention is in particular to propose a new device design that makes it possible to solve at least part of the drawbacks of the state of the art while retaining a device that is advantageously simple and inexpensive to manufacture.
  • the invention proposes a device for a cosmetic product stick of the type described above, characterized in that the device comprises catch-up means for canceling the axial play between the first element and the second element.
  • element and braking means separate from the catching means, the catching means and the braking means being respectively formed in one piece with the first element.
  • the realization of the catch-up means and the one-piece braking means, in one piece, with the first element makes it possible to limit the number of parts of the device and consequently to reduce the dimensional tolerances.
  • the device according to the invention comprises one less piece, the ring being advantageously suppressed.
  • the catching means and the braking means are respectively integral with the first element, in particular obtained directly by plastic molding in a simple and economical manner.
  • the one-piece construction of the catch-up and braking means makes it possible to improve the accuracy of the dimensions, in particular with respect to the abutment means.
  • the catching means according to the invention make it possible to have zero or almost zero axial play between the first element and the second element of the device.
  • the means of catching the axial play have an interaction effect with the braking means.
  • the axial play compensating means make it possible to position the second element axially with increased precision relative to the first element, whereby the control of the friction of the braking means carried by the first element against an integral surface of the second element is improved.
  • the control of the resulting braking torque resulting from the friction is an important factor of quality perceived during the use of the device.
  • the braking torque is determined in particular by the surface of the friction zone of braking means such as lugs and by the elastic deformation capacity in the radial direction.
  • the braking torque must be able to be adapted according to the expectations of the people intended to use the device, which expectations often vary from one country to another. This is one of the reasons why it is particularly advantageous to be able to act on the design of the braking means independently of the catch-up means.
  • the means of catching the axial play between the first element and the second element are elastically deformable in the axial direction to exert, on the second element, a thrust force to cause the abutment of the second element against abutment means in solidarity with the first element;
  • the abutment means comprise at least one flange which, arranged at an upper end of the first member extends radially outwardly projecting;
  • the second element comprises an upper edge which is axially in abutment against a lower face of the rim of the first element under the action of the thrust force;
  • the thrust force is exerted by the catching means on a lower part of the second element
  • the catching means comprise at least two studs which, extending radially projecting from the first element, each comprise a bearing surface which cooperates with a portion of a lower edge of the second element;
  • the stud is connected to the first element by means of a beam whose ends are connected to the circumferentially opposite edges of a window formed in the first element;
  • said at least two pads of the catching means are arranged diametrically opposite each other on the first element;
  • the catching means are arranged circumferentially between two braking means;
  • the braking means comprise at least two lugs which, radially flexible, each comprise at least one zone friction intended to cooperate with a friction surface radially vis-à-vis integral with the second element.
  • FIG. 1 is a perspective view which represents a device for a stick of cosmetic product according to an exemplary embodiment of the invention and which, exploded, illustrates a guide forming the first element, an outer sheath forming the second element and a cup respectively before the assembly of these main parts of the device;
  • FIG. 2 is a perspective view which represents a device according to FIG. 1 after assembly (without the cup) and which illustrates the means of catching up the axial clearance between the sheath (setting in transparency) and the guide, as well as the means braking;
  • FIG. 3 is a sectional view which represents the device according to FIG. 2 along an axial sectional plane passing through the main axis of the device and by the catching means and which illustrates the cooperation between the catching means exerting, on the lower edge of the sheath, a thrust force oriented axially upwards to cancel the axial clearance between the sheath and the guide, the upper edge of the sheath abuts against an upper rim of the guide;
  • FIG. 4 is a sectional view showing the device according to Figure 2 according to a radial sectional plane orthogonal to the main axis of the device, and which illustrates more particularly the two pads forming the catching means exerting a thrust force on the lower edge of the sheath;
  • FIG. 5 is a sectional view which represents the device according to FIG. 2 along an axial section plane passing through the main axis of the device and, angularly offset from that of FIG. 3, by braking means and which illustrates the cooperation between the braking means carried by the guide and the friction surface, radially opposite, carried by the inner wall of the sheath;
  • FIG. 6 is a sectional view showing the device according to FIG. 2 along a radial sectional plane orthogonal to the main axis of the device and offset axially upwards relative to that of FIG. 4, and which illustrates more particularly the braking means formed by flexible tabs.
  • the "axial" direction corresponds in the figures to that of the main axis A shown in FIG. 2 of the device for the application of a stick of cosmetic product, in particular a stick of lipstick, and the "Radial" direction is orthogonal to the axial direction.
  • FIG. 1 a device 10 for a stick 12 of cosmetic product, shown in dashed line, including a stick of lipstick.
  • the device 10 has an axis A, called the main axis, represented in FIG.
  • the device 10 comprises at least a first element 14, which will be called hereinafter the "guide".
  • the guide 14 mainly comprises a tubular body 16 which extends axially from a base 18 forming the lower end of the first element 14 to an upper outlet opening 20 to be traversed by the stick 12 of cosmetic product.
  • the outer surface of the base 18 is for example provided with ridges for easy handling during use of the device 10.
  • the guide 14 comprises two slides, respectively a first slide 22 and a second slide 24, which are constituted by slots passing radially through the wall of the body 16 and are arranged diametrically opposite to each other.
  • the slides 22 and 24 extend axially in the body 16 of the guide 14, the first slide 22 is closed axially at its upper end while the second slide 24 is open.
  • the slides 22 and 24 are closed at their lower end located on the side of the base 18.
  • the slides 22 and 24 each comprise straight and parallel edges.
  • the first slide 22 has at one of its axial ends an upper notch 26 and at the other end a notch 28 below, said notches 26 and 28 extending circumferentially.
  • the second slide 24 also has upper and lower notches.
  • the notches 26 and 28 are intended to form end-of-stroke locking means.
  • the device 10 comprises a cup 30 which receives the stick 12 of cosmetic product as shown in FIG.
  • the cup 30 is intended to be mounted to slide axially in the guide 14, respectively between at least one retracted position and an application position.
  • the retracted position corresponds to a position in which the stick 12 is inside the device 10 for the purpose of its protection and storage.
  • the position of application corresponds to a position in which the stick 12 is deployed axially upwards so that its free end extends out of the device through the opening 20.
  • the cup 30 comprises two lugs 32 and 34 which protrude radially outwards, said lugs 32 and 34 being each engaged in one of the slides 22 and 24 of the guide 14 and passing through them to extend radially towards the outside beyond the outer surface of the body 16 of the guide 14.
  • the cup 30 has a cylindrical wall 36 which, extending axially over a given height, delimits a housing which receives the lower part of the stick 12 and a bottom 38.
  • the cup 30 is made in two parts respectively an upper cup for receiving the cosmetic product stick and a lower cup which, sometimes sometimes called “cup motor”, cooperates with the mechanism of the device to ensure the sliding between retracted and application positions.
  • the two parts of the cup 30 are joined together with each other, for example by interlocking.
  • the device 10 comprises a second element 40, which will be called hereinafter the "sheath". As shown in Figure 1, the sheath 40 has a cylindrical shape.
  • the sheath 40 can receive an outer sheath (not shown), generally metal, within which the sheath 40 is inserted and immobilized in rotation due to force fitting or for example the use of glue to fix together the sheath 40 and the shirt.
  • an outer sheath generally metal
  • sheath should therefore be interpreted in a nonlimiting manner as also denoting an assembly consisting of a sheath 40 and such a jacket.
  • a thrust force applied to a portion of the sheath 40 could also be applied to the jacket to obtain an equivalent result.
  • the sheath 40 comprises grooves 42 and 44 helical diametrically opposed, with which the free ends of the lugs 32 and 34 of the cup 30 cooperate in operation.
  • the sheath 40 has an inner wall 46 provided with said helical grooves 42 and 44.
  • the sheath 40 comprises, at its lower axial end, a skirt 48 having an upper outer diameter and delimiting a shoulder 47 at its connection with the portion of the sheath 40 extending axially above.
  • Such a shoulder 47 is generally present when the device comprises a liner integral with the sheath 40, the radial dimension of the shoulder 47 then corresponds to the thickness of the liner so that the liner and the skirt 48 of the sheath 40 have the same outer diameter, their outer cylindrical surfaces extending axially relative to each other.
  • the sheath 40 comprises, radially on the inside, an annular abutment face 49 visible in FIG. 2, the function of which will be described later.
  • the annular abutment face 49 is formed at the beginning of the skirt 48, here substantially axially arranged at the shoulder 47.
  • the sheath 40 comprises respectively an upper edge 50 located at its upper axial end and a lower edge 52 at its lower axial end formed by said skirt 48, said edges 50 and 52 being circumferentially continuous.
  • the sheath 40 is intended to be mounted by snapping on the guide 14 to obtain, after assembly, the device 10 shown in particular in FIG.
  • the sheath 40 is fitted axially from top to bottom on the guide 14, along the arrow "I" shown in FIG.
  • the rotation of the guide 14 through its base 18 relative to the sheath 40 causes axial movement of the cup 30, specifically a rising movement or a descent movement of the cup 30 depending on the direction of rotation.
  • the stick 12 of cosmetic product moves axially with the cup 30 between said retracted position and application position.
  • the guide 14, the cup 30 and the sheath 40 are respectively made of plastics material.
  • the guide 14 comprises a single slide
  • the cup 30 has a single associated pin
  • the sheath 40 a helical groove.
  • the guide 14 comprises, axially at its upper end, a flange 54 which extends radially projecting outwardly.
  • the rim 54 has a lower face 56.
  • the flange 54 is circumferentially interrupted at the open upper end of the slide 24 whereby the guide 14 can deform radially to facilitate the assembly of the sheath 40 before returning to its original shape.
  • the sheath 40 has, axially above the skirt 48, an inside diameter which is substantially equal to the outside diameter of the body 16 of the guide 14 so that, after assembly, the radial clearance between the sheath 40 and the guide 14 is very small. .
  • stop means are provided to limit the axial displacement between the part 14 and the sheath 40 at a determined axial clearance.
  • the guide 14 has a shoulder 55 which extends radially outwards and which is (normally) intended to cooperate with the annular abutment face 49 situated radially outwardly. inside the sheath 40.
  • the stop means of a device according to the prior art generally consist, on the one hand, by the rim 54 of the guide 14 and, on the other hand, by the shoulder 55 of the guide 14.
  • the flange 54 forms an upper abutment against the lower face 56 of which the edge 50 of the sheath 40 abuts and the shoulder 55 forms a lower abutment against which the annular abutment face 49 of the sheath 40 abuts.
  • the device 10 comprises in a lower portion 58 of the guide 14, axially between the shoulder 55 and the base 18, means 60 for catching the axial play.
  • the lower portion 58 of the guide 14 extends axially on a height generally similar to that of the skirt 48 of the sheath 40.
  • the means 60 for compensating the axial play are able to cancel the axial clearance between the guide 14 and the sheath 40.
  • the means 60 for compensating the axial play are made in one piece, in one piece, with the guide 14.
  • the means 60 of catch-up are arranged in the lower portion 58 located axially above the base 18 of the guide 14.
  • the means 60 for catching the axial play are elastically deformable in the axial direction.
  • the catch-up means 60 are shaped to exert on the sheath 40 a thrust force "P" (shown schematically with an arrow in FIG. 2) in order to cancel the axial play and cause the sheath 40 to come into abutment. against an axial abutment means of the guide 14.
  • P thrust force
  • the thrust force P is exerted axially from the bottom to the top by the catching means 60 on a lower part of the sheath 40, preferably on the lower edge 52 of the skirt 48 of the sheath 40.
  • the thrust force could be exerted by the catching means 60 on a jacket integral with the sheath 40.
  • the shoulder 55 and the face 49 are axially separated from one another by the axial clearance that would have existed between the guide 14 and the sheath 40 in the absence of catching means 60, axial clearance that the means 60 of catching up have allowed to cancel.
  • the catch-up means 60 comprise at least two studs 62 which, extending radially projecting from the lower portion 58 of the guide 14, beyond the outer surface of the guide 14, each comprise a bearing surface 64.
  • the support surface 64 is flat and extends in a plane orthogonal to the axis A.
  • each stud 62 cooperates with a portion of the lower edge 52 of the sheath 40 on which said thrust force is applied.
  • the lower stopper means 55, 49 advantageously protect the catching means 60 formed by the pads 62 during assembly, in particular in case of stroke of the sheath 40 with respect to the guide 14, avoiding any deterioration of the pads 62.
  • Each stud 62 is radially connected to the guide 14 via a beam 66 whose ends are connected to the circumferentially opposite edges 67 and 69 of a window 68 formed in the guide 14.
  • Each of the pads 62 is positioned at the center of the beam 66, equidistant from the edges 67 and 69 of the window 68 formed in the portion 58 of the guide 14.
  • the beam 66 is free to deform axially in the window 68, in particular in bending during assembly, before exerting by reaction said thrust force P on the lower edge 52 of the sheath 40.
  • the two pads 62 of the catching means 60 are arranged on the guide 14 diametrically opposite to each other.
  • the catch-up means 60 comprise more than two studs 62, for example three or four studs, said studs are advantageously angularly distributed regularly over the guide 14.
  • the device 10 comprises braking means 70, distinct from the catching means 60.
  • the braking means 70 are made in one piece with the guide 14, more precisely with the portion 58 in which said braking means 70 as the catch-up means 60 are arranged.
  • the braking means 70 extend in a plane orthogonal to the axis A of the device 10.
  • the braking means 70 consist of at least one tab 72, preferably two tabs 72.
  • the tab or tabs 72 extend circumferentially along said plane orthogonal to the axis A of the device 10.
  • the braking means 70 comprise a total of four tabs 72 which are diametrically opposed in pairs.
  • the four tabs 72 are included in the same plane orthogonal to the axis A, that is to say are not axially offset relative to each other.
  • the catch-up means 60 are arranged circumferentially between two braking means 70, each of the two pads 62 being arranged between two tabs 72.
  • the tabs 72 forming the braking means 70 are radially flexible, each tab 72 being connected to the guide 14 by one of its ends whose other free end is capable of radially speaking in the plane orthogonal to the axis A to apply a braking effort.
  • Each tab 72 is individually formed in a window of the portion 58 of the guide 14 which therefore comprises four in the embodiment.
  • a pair of legs 72 is formed in the same window, the free ends of each of the tabs 72 being faces and each tab 72 being connected to one of the axial edges of the window.
  • Each tab 72 comprises at least one friction zone 74 which is intended to cooperate with a surface 76 of friction located radially vis-à-vis and here secured to the sheath 40.
  • the zone 74 of friction of each tab 72 is likely to vary depending on the applications and the desired braking torque.
  • the means 70 for braking the device 10 extend in a plane orthogonal to the axis A around which the guide 14 is rotated relative to the sheath 40.
  • the zone 74 of friction of each tab 72 cooperates with the friction surface 76 of the sheath 40 determining the braking torque of the device 10.
  • the catch-up means 60 make it possible to axially position the tabs 72 forming the braking means 70 with respect to the friction surface 76 precisely.
  • control of the braking torque is improved by virtue of the precision thus obtained with the combination of means 60 for compensating the axial clearance and braking means 70 made according to the teachings of the invention.

Abstract

The invention relates to a device (10) for a stick (12) of cosmetic product, having at least one first element (14), a well (30) intended to receive the stick (12) of cosmetic product and a second element (40), the second element (40) being snap-fastened to the first element (14) with a given axial clearance, wherein the setting of the first element (14) into rotation with respect to the second element (40) brings about an axial movement of the well (30), characterized in that the device (10) has adjustment means (60) for removing the axial clearance between the first element (14) and the second element (40), and brake means (70), separate from the adjustment means (60), the adjustment means (60) and the brake means (70) being produced in each case in one piece with the first element (14).

Description

DISPOSITIF POUR UN BÂTON DE PRODUIT COSMÉTIQUE, NOTAMMENT UN BÂTON DE ROUGE À LÈVRES  DEVICE FOR A COSMETIC PRODUCT STICK, IN PARTICULAR A LIP RED STICK
DOMAINE TECHNIQUE DE L'INVENTION TECHNICAL FIELD OF THE INVENTION
L'invention concerne un dispositif pour un bâton de produit cosmétique, notamment un bâton de rouge à lèvres. The invention relates to a device for a stick of cosmetic product, in particular a stick of lipstick.
L'invention concerne plus particulièrement un dispositif pour un bâton de produit cosmétique comportant au moins un premier élément, une cupule destinée à recevoir le bâton de produit cosmétique et un deuxième élément, le deuxième élément étant monté par encliquetage sur le premier élément avec un jeu axial déterminé, dans lequel la mise en rotation du premier élément par rapport au deuxième élément provoque un mouvement axial de la cupule.  The invention more particularly relates to a device for a cosmetic product stick comprising at least a first element, a cup intended to receive the cosmetic product stick and a second element, the second element being snap-fitted on the first element with a set determined axial, in which the rotation of the first element relative to the second element causes axial movement of the cup.
ÉTAT DE LA TECHNIQUE STATE OF THE ART
On connaît de l'état de la technique des dispositifs de ce type utilisés pour le conditionnement d'un bâton de produit cosmétique, notamment mais non exclusivement pour un bâton de rouge à lèvres. State of the art devices of this type used for the packaging of a stick of cosmetic product are known, in particular but not exclusively for a stick of lipstick.
Le bâton est maintenu par sa base dans une cupule qui coulisse axialement entre au moins une position escamotée et une position d'application du produit cosmétique dans laquelle au moins une partie du bâton de produit cosmétique s'étend axialement hors du dispositif.  The stick is held by its base in a cup which slides axially between at least one retracted position and a position of application of the cosmetic product in which at least a portion of the cosmetic product stick extends axially out of the device.
De manière connue, une telle cinématique est obtenue grâce à un mécanisme rotatif comportant un premier élément et un deuxième élément qui, montés concentriques, comportent pour l'une au moins une glissière et pour l'autre au moins une rainure hélicoïdale lesquelles sont respectivement traversées radialement par au moins un ergot solidaire de la cupule portant le bâton. La cupule comporte généralement une paire d'ergots, les deux ergots étant agencés diamétralement à l'opposé l'un de l'autre, le premier élément étant alors muni de deux glissières et le deuxième élément de deux rainures hélicoïdales. In known manner, such a kinematics is obtained by means of a rotary mechanism comprising a first element and a second element which, concentrically mounted, comprise for one at least one slide and for the other at least one helical groove which are respectively traversed radially by at least one lug integral with the cup carrying the stick. The cup generally comprises a pair of lugs, the two lugs being arranged diametrically opposite to one another, the first element then being provided with two slides and the second element with two helical grooves.
Le premier élément et le deuxième élément d'un tel dispositif sont réalisés en matière plastique et obtenus par moulage. Pour permettre leur montage par encliquetage, on prévoit des tolérances de cote desdits premier et deuxième éléments qui sont telles qu'il existe ensuite un jeu axial entre chacun de ces éléments.  The first element and the second element of such a device are made of plastic material and obtained by molding. To allow their snap-fitting assembly, dimension tolerances of said first and second elements are provided, which are such that there is then an axial clearance between each of these elements.
Or, un tel jeu axial autorise un déplacement axial non maîtrisé entre le premier élément et le deuxième élément et conduit à un manque de précision dans la commande de déplacement de la cupule lors de l'utilisation et ce faisant à une perception négative de la qualité du dispositif.  However, such an axial clearance allows an uncontrolled axial displacement between the first element and the second element and leads to a lack of precision in the control of displacement of the cup during use and thus to a negative perception of the quality. of the device.
Dans l'état de la technique, différentes solutions ont été proposées pour y remédier et améliorer le fonctionnement d'un dispositif comportant un mécanisme de ce type. Les différentes solutions connues ne donnent toutefois pas entière satisfaction.  In the state of the art, various solutions have been proposed to remedy and improve the operation of a device comprising a mechanism of this type. The various known solutions are not entirely satisfactory.
Le document EP-0.844.837 décrit par exemple un dispositif EP-0,844,837 describes for example a device
(étui) pour bâton de rouge à lèvres comportant des moyens de rattrapage du jeu axial entre le premier élément et le deuxième élément (gaines interne et externe). (Case) for a lipstick stick comprising means for catching the axial clearance between the first element and the second element (inner and outer sheaths).
Selon les enseignements de ce document, les moyens de rattrapage de jeu axial sont notamment formés par des arceaux élastiques portés par une couronne destinée à être rapportée à fixation sur le premier élément. Cette solution présente toutefois des inconvénients.  According to the teachings of this document, the axial play compensating means are in particular formed by elastic hoops carried by a crown intended to be attached to attachment to the first element. This solution, however, has disadvantages.
L'utilisation d'une couronne, rapportée solidairement sur le premier élément, conduit à ajouter des tolérances liées à l'ajout de cette pièce supplémentaire. De plus, l'augmentation du nombre de pièces a des conséquences négatives sur le coût. Les arceaux élastiques assurent une double fonction, d'une part une fonction de rattrapage de jeu axial entre le premier élément et le deuxième élément (dites gaines interne et externe) et, d'autre part, une fonction de freinage « souple » lors de la mise en rotation du premier élément relativement au deuxième élément. The use of a crown, reported integrally on the first element, leads to add tolerances related to the addition of this additional piece. In addition, the increase in the number of coins has negative consequences on the cost. The elastic hoops provide a dual function, on the one hand a function of catching axial play between the first element and the second element (called inner and outer sheath) and, secondly, a "soft" braking function when rotating the first element relative to the second element.
Le cumul par les arceaux des fonctions de rattrapage et de freinage ne permet pas d'optimiser séparément les résultats obtenus pour chacune de ces fonctions, en particulier pas les surfaces de frottement et le couple obtenu avec les moyens de freinage.  The accumulation by the hoops of the retrofit and braking functions does not make it possible to separately optimize the results obtained for each of these functions, in particular not the friction surfaces and the torque obtained with the braking means.
Le but de l'invention est notamment de proposer une nouvelle conception de dispositif permettant de résoudre au moins une partie des inconvénients de l'état de la technique tout en conservant un dispositif qui soit avantageusement simple et économique à fabriquer.  The object of the invention is in particular to propose a new device design that makes it possible to solve at least part of the drawbacks of the state of the art while retaining a device that is advantageously simple and inexpensive to manufacture.
BREF RESUME DE L'INVENTION Dans ce but, l'invention propose un dispositif pour un bâton de produit cosmétique du type décrit précédemment, caractérisé en ce que le dispositif comporte des moyens de rattrapage pour annuler le jeu axial entre le premier élément et le deuxième élément et des moyens de freinage, distincts des moyens de rattrapage, les moyens de rattrapage et les moyens de freinage étant respectivement réalisés en une seule pièce avec le premier élément. BRIEF SUMMARY OF THE INVENTION For this purpose, the invention proposes a device for a cosmetic product stick of the type described above, characterized in that the device comprises catch-up means for canceling the axial play between the first element and the second element. element and braking means, separate from the catching means, the catching means and the braking means being respectively formed in one piece with the first element.
Avantageusement, la réalisation des moyens de rattrapage et des moyens de freinage en une seule pièce, monobloc, avec le premier élément permet de limiter le nombre de pièces du dispositif et par conséquent de réduire les tolérances dimensionnelles. Par comparaison avec le document EP-0.844.837, le dispositif selon l'invention comporte une pièce en moins, la couronne étant avantageusement supprimée. Advantageously, the realization of the catch-up means and the one-piece braking means, in one piece, with the first element makes it possible to limit the number of parts of the device and consequently to reduce the dimensional tolerances. In comparison with the document EP-0.844.837, the device according to the invention comprises one less piece, the ring being advantageously suppressed.
Les moyens de rattrapage et les moyens de freinage sont respectivement venus de matière avec le premier élément, notamment obtenus directement par moulage de matière plastique de manière simple et économique.  The catching means and the braking means are respectively integral with the first element, in particular obtained directly by plastic molding in a simple and economical manner.
Avantageusement, la réalisation en une seule pièce des moyens de rattrapage et de freinage permet d'améliorer la précision des cotes en particulier par rapport aux moyens de butée. Les moyens de rattrapage selon l'invention permettent d'avoir un jeu axial nul ou quasi nul entre le premier élément et le deuxième élément du dispositif.  Advantageously, the one-piece construction of the catch-up and braking means makes it possible to improve the accuracy of the dimensions, in particular with respect to the abutment means. The catching means according to the invention make it possible to have zero or almost zero axial play between the first element and the second element of the device.
Grâce à l'utilisation d'une combinaison de moyens pour assurer la fonction de rattrapage et la fonction de freinage, il est possible d'optimiser la conception de chacun des moyens au regard de leur fonction.  Thanks to the use of a combination of means to ensure the catch-up function and the braking function, it is possible to optimize the design of each of the means with regard to their function.
Les moyens de rattrapage du jeu axial ont un effet d'interaction avec les moyens de freinage. Les moyens de rattrapage de jeu axial permettent de positionner axialement avec une précision accrue le deuxième élément relativement au premier élément grâce à quoi on améliore le contrôle du frottement des moyens de freinage portés par le premier élément contre une surface solidaire du deuxième élément.  The means of catching the axial play have an interaction effect with the braking means. The axial play compensating means make it possible to position the second element axially with increased precision relative to the first element, whereby the control of the friction of the braking means carried by the first element against an integral surface of the second element is improved.
Le contrôle du couple de freinage obtenu résultant du frottement est un facteur important de qualité perçue lors de l'utilisation du dispositif. Le couple de freinage est notamment déterminé par la surface de la zone de frottement de moyens de freinage tels que des pattes et par la capacité de déformation élastique selon la direction radiale.  The control of the resulting braking torque resulting from the friction is an important factor of quality perceived during the use of the device. The braking torque is determined in particular by the surface of the friction zone of braking means such as lugs and by the elastic deformation capacity in the radial direction.
Le couple de freinage doit pouvoir être adapté en fonction des attentes des personnes destinées à utiliser le dispositif, lesquelles attentes varient souvent d'un pays à un autre. C'est l'une des raisons pour lesquelles, il est notamment avantageux de pouvoir agir sur la conception des moyens de freinage indépendamment des moyens de rattrapage. The braking torque must be able to be adapted according to the expectations of the people intended to use the device, which expectations often vary from one country to another. This is one of the reasons why it is particularly advantageous to be able to act on the design of the braking means independently of the catch-up means.
Selon d'autres caractéristiques de l'invention :  According to other features of the invention:
- les moyens de rattrapage du jeu axial entre le premier élément et le deuxième élément sont déformables élastiquement selon la direction axiale pour exercer, sur le deuxième élément, un effort de poussée afin de provoquer la venue en butée du deuxième élément contre des moyens de butée solidaires du premier élément ;  - The means of catching the axial play between the first element and the second element are elastically deformable in the axial direction to exert, on the second element, a thrust force to cause the abutment of the second element against abutment means in solidarity with the first element;
- les moyens de butée comportent au moins un rebord qui, agencé à une extrémité supérieure du premier élément s'étend radialement en saillie vers l'extérieur ;  - The abutment means comprise at least one flange which, arranged at an upper end of the first member extends radially outwardly projecting;
- le deuxième élément comporte un bord supérieur qui est axialement en butée contre une face inférieure du rebord du premier élément sous l'action de l'effort de poussée ;  the second element comprises an upper edge which is axially in abutment against a lower face of the rim of the first element under the action of the thrust force;
- l'effort de poussée est exercé par les moyens de rattrapage sur une partie inférieure du deuxième élément ;  the thrust force is exerted by the catching means on a lower part of the second element;
- les moyens de rattrapage comportent au moins deux plots qui, s'étendant radialement en saillie à partir du premier élément, comportent chacun une surface d'appui qui coopère avec un tronçon d'un bord inférieur du deuxième élément ;  - The catching means comprise at least two studs which, extending radially projecting from the first element, each comprise a bearing surface which cooperates with a portion of a lower edge of the second element;
- le plot est relié au premier élément par l'intermédiaire d'une poutre dont les extrémités se raccordent aux bords, circonférentiellement opposés, d'une fenêtre ménagée dans le premier élément ;  the stud is connected to the first element by means of a beam whose ends are connected to the circumferentially opposite edges of a window formed in the first element;
- lesdits au moins deux plots des moyens de rattrapage sont agencés diamétralement à l'opposé l'un de l'autre sur le premier élément ;  said at least two pads of the catching means are arranged diametrically opposite each other on the first element;
- les moyens de rattrapage sont agencés circonférentiellement entre deux moyens de freinage ;  the catching means are arranged circumferentially between two braking means;
- les moyens de freinage comportent au moins deux pattes qui, flexibles radialement, comportent chacune au moins une zone de frottement destinée à coopérer avec une surface de frottement radialement en vis-à-vis solidaire du deuxième élément. the braking means comprise at least two lugs which, radially flexible, each comprise at least one zone friction intended to cooperate with a friction surface radially vis-à-vis integral with the second element.
BREVE DESCRIPTION DES FIGURES BRIEF DESCRIPTION OF THE FIGURES
D'autres caractéristiques et avantages de l'invention apparaîtront 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 : Other characteristics and advantages of the invention will appear during the reading of the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:
- la figure 1 est une vue en perspective qui représente un dispositif pour un bâton de produit cosmétique selon un exemple de réalisation de l'invention et qui, en éclaté, illustre un guide formant le premier élément, une gaine extérieure formant le deuxième élément et une cupule respectivement avant le montage de ces principales pièces du dispositif ;  FIG. 1 is a perspective view which represents a device for a stick of cosmetic product according to an exemplary embodiment of the invention and which, exploded, illustrates a guide forming the first element, an outer sheath forming the second element and a cup respectively before the assembly of these main parts of the device;
- la figure 2 est une vue en perspective qui représente un dispositif selon la figure 1 après montage (sans la cupule) et qui illustre les moyens de rattrapage du jeu axial entre la gaine (mise en transparence) et le guide, ainsi que les moyens de freinage ;  FIG. 2 is a perspective view which represents a device according to FIG. 1 after assembly (without the cup) and which illustrates the means of catching up the axial clearance between the sheath (setting in transparency) and the guide, as well as the means braking;
- la figure 3 est une vue en coupe qui représente le dispositif selon la figure 2 suivant un plan de coupe axial passant par l'axe principal du dispositif et par les moyens de rattrapage et qui illustre la coopération entre les moyens de rattrapage exerçant, sur le bord inférieur de la gaine, un effort de poussée orientée axialement vers le haut pour annuler le jeu axial entre la gaine et le guide, le bord supérieur de la gaine venant en butée contre un rebord supérieur du guide ;  FIG. 3 is a sectional view which represents the device according to FIG. 2 along an axial sectional plane passing through the main axis of the device and by the catching means and which illustrates the cooperation between the catching means exerting, on the lower edge of the sheath, a thrust force oriented axially upwards to cancel the axial clearance between the sheath and the guide, the upper edge of the sheath abuts against an upper rim of the guide;
- la figure 4 est une vue en coupe qui représente le dispositif selon la figure 2 suivant un plan de coupe radial orthogonal à l'axe principal du dispositif, et qui illustre plus particulièrement les deux plots formant les moyens de rattrapage exerçant un effort de poussée sur le bord inférieur de la gaine ; - la figure 5 est une vue en coupe qui représente le dispositif selon la figure 2 suivant un plan de coupe axial passant par l'axe principal du dispositif et, décalé angulairement par rapport à celui de la figure 3, par des moyens de freinage et qui illustre la coopération entre les moyens de freinage portés par le guide et la surface de frottement, radialement en vis à vis, portée par la paroi interne de la gaine ; - Figure 4 is a sectional view showing the device according to Figure 2 according to a radial sectional plane orthogonal to the main axis of the device, and which illustrates more particularly the two pads forming the catching means exerting a thrust force on the lower edge of the sheath; FIG. 5 is a sectional view which represents the device according to FIG. 2 along an axial section plane passing through the main axis of the device and, angularly offset from that of FIG. 3, by braking means and which illustrates the cooperation between the braking means carried by the guide and the friction surface, radially opposite, carried by the inner wall of the sheath;
- la figure 6 est une vue en coupe qui représente le dispositif selon la figure 2 suivant un plan de coupe radial orthogonal à l'axe principal du dispositif et décalé axialement vers le haut par rapport à celui de la figure 4, et qui illustre plus particulièrement les moyens de freinage formés par des pattes flexibles. DESCRIPTION DETAILLEE DES FIGURES  FIG. 6 is a sectional view showing the device according to FIG. 2 along a radial sectional plane orthogonal to the main axis of the device and offset axially upwards relative to that of FIG. 4, and which illustrates more particularly the braking means formed by flexible tabs. DETAILED DESCRIPTION OF THE FIGURES
Par convention, la direction « axiale » correspond dans les figures à celle de l'axe A principal représenté à la figure 2 du dispositif pour l'application d'un bâton de produit cosmétique, en particulier un bâton de rouge à lèvres, et la direction « radiale » est orthogonale à la direction axiale. By convention, the "axial" direction corresponds in the figures to that of the main axis A shown in FIG. 2 of the device for the application of a stick of cosmetic product, in particular a stick of lipstick, 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, la partie supérieure du dispositif correspondant à celle par laquelle le bâton de produit cosmétique sort hors du dispositif en vue de son application.  In the following detailed description of the figures, the terms "upper" and "lower" or "high" and "low" will be used in a nonlimiting manner with reference to the axial direction, the upper part of the device corresponding to that by which the cosmetic product stick out of the device for its application.
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 A qu'un élément intérieur. On a représenté sur la figure 1, un dispositif 10 pour un bâton 12 de produit cosmétique, représenté en trait pointillés, notamment un bâton de rouge à lèvres. In the same way, the terms "outer or outer" and "inner or inner" are used with reference to the radial direction, an outer member being radially further from the axis A than an inner member. There is shown in Figure 1, a device 10 for a stick 12 of cosmetic product, shown in dashed line, including a stick of lipstick.
Le dispositif 10 présente un axe A, dit axe principal, représenté sur la figure 2.  The device 10 has an axis A, called the main axis, represented in FIG.
Le dispositif 10 comporte au moins un premier élément 14, qui sera appelé ci-après le « guide ».  The device 10 comprises at least a first element 14, which will be called hereinafter the "guide".
Le guide 14 comporte principalement un corps 16 tubulaire qui s'étend axialement depuis une embase 18 formant l'extrémité inférieure du premier élément 14 jusqu'à une ouverture 20 supérieure de sortie destinée à être traversée par le bâton 12 de produit cosmétique.  The guide 14 mainly comprises a tubular body 16 which extends axially from a base 18 forming the lower end of the first element 14 to an upper outlet opening 20 to be traversed by the stick 12 of cosmetic product.
La surface externe de l'embase 18 est par exemple munie de stries pour faciliter sa manipulation lors de l'utilisation du dispositif 10.  The outer surface of the base 18 is for example provided with ridges for easy handling during use of the device 10.
De préférence, le guide 14 comporte deux glissières, respectivement une première glissière 22 et une deuxième glissière 24, qui sont constitués par des fentes traversant radialement la paroi du corps 16 et sont agencés diamétralement à l'opposé l'une de l'autre.  Preferably, the guide 14 comprises two slides, respectively a first slide 22 and a second slide 24, which are constituted by slots passing radially through the wall of the body 16 and are arranged diametrically opposite to each other.
Les glissières 22 et 24 s'étendent axialement dans le corps 16 du guide 14, la première glissière 22 est fermée axialement à son extrémité supérieure tandis que la deuxième glissière 24 est ouverte. Les glissières 22 et 24 sont fermées à leur extrémité inférieure située du côté de l'embase 18.  The slides 22 and 24 extend axially in the body 16 of the guide 14, the first slide 22 is closed axially at its upper end while the second slide 24 is open. The slides 22 and 24 are closed at their lower end located on the side of the base 18.
Les glissières 22 et 24 comportent chacune des bords rectilignes et parallèles. La première glissière 22 comporte à l'une de ses extrémités axiale une échancrure 26 supérieure et à l'autre de ses extrémités une échancrure 28 inférieure, lesdites échancrures 26 et 28 s'étendant circonférentiellement.  The slides 22 and 24 each comprise straight and parallel edges. The first slide 22 has at one of its axial ends an upper notch 26 and at the other end a notch 28 below, said notches 26 and 28 extending circumferentially.
Dans l'exemple de réalisation de la figure 1, la deuxième glissière 24 comporte également des échancrures supérieure et inférieure. Les échancrures 26 et 28 sont destinées à former des moyens de blocage de fin de course. In the embodiment of Figure 1, the second slide 24 also has upper and lower notches. The notches 26 and 28 are intended to form end-of-stroke locking means.
Le dispositif 10 comporte une cupule 30 qui reçoit le bâton 12 de produit cosmétique comme l'illustre la figure 1.  The device 10 comprises a cup 30 which receives the stick 12 of cosmetic product as shown in FIG.
La cupule 30 est destinée à être montée coulissante axialement dans le guide 14, respectivement entre au moins une position escamotée et une position d'application.  The cup 30 is intended to be mounted to slide axially in the guide 14, respectively between at least one retracted position and an application position.
La position escamotée correspond à une position dans laquelle le bâton 12 est à l'intérieur du dispositif 10 en vue de sa protection et de son stockage.  The retracted position corresponds to a position in which the stick 12 is inside the device 10 for the purpose of its protection and storage.
La position d'application correspond à une position dans laquelle le bâton 12 est déployé axialement vers le haut de manière que son extrémité libre s'étende hors du dispositif par l'ouverture 20.  The position of application corresponds to a position in which the stick 12 is deployed axially upwards so that its free end extends out of the device through the opening 20.
De préférence, la cupule 30 comporte deux ergots 32 et 34 qui font saillis radialement vers l'extérieur, lesdits ergots 32 et 34 étant chacun engagés dans l'une des glissières 22 et 24 du guide 14 et les traversant pour s'étendre radialement vers l'extérieur au-delà de la surface externe du corps 16 du guide 14.  Preferably, the cup 30 comprises two lugs 32 and 34 which protrude radially outwards, said lugs 32 and 34 being each engaged in one of the slides 22 and 24 of the guide 14 and passing through them to extend radially towards the outside beyond the outer surface of the body 16 of the guide 14.
La cupule 30 comporte une paroi 36 cylindrique qui, s'étendant axialement sur une hauteur donnée, délimite un logement qui reçoit la partie inférieure du bâton 12 et un fond 38.  The cup 30 has a cylindrical wall 36 which, extending axially over a given height, delimits a housing which receives the lower part of the stick 12 and a bottom 38.
En variante non représentée, la cupule 30 est réalisée en deux parties respectivement une cupule supérieure destinée à recevoir le bâton de produit cosmétique et une cupule inférieure qui, encore appelée parfois « moteur de cupule », coopère avec le mécanisme du dispositif pour assurer le coulissement entre les positions escamotée et d'application.  In variant not shown, the cup 30 is made in two parts respectively an upper cup for receiving the cosmetic product stick and a lower cup which, sometimes sometimes called "cup motor", cooperates with the mechanism of the device to ensure the sliding between retracted and application positions.
Dans une telle variante, les deux parties de la cupule 30 sont assemblées solidairement l'une avec l'autre, par exemple par emboîtement. Le dispositif 10 comporte un deuxième élément 40, qui sera appelé ci-après la « gaine ». Tel que représenté sur la figure 1, la gaine 40 présente une forme cylindrique. In such a variant, the two parts of the cup 30 are joined together with each other, for example by interlocking. The device 10 comprises a second element 40, which will be called hereinafter the "sheath". As shown in Figure 1, the sheath 40 has a cylindrical shape.
La gaine 40 peut recevoir une chemise (non représentée) extérieure, généralement métallique, à l'intérieur de laquelle la gaine 40 est introduite et immobilisée en rotation en raison du montage à force ou encore par exemple de l'utilisation de colle pour fixer ensemble la gaine 40 et la chemise.  The sheath 40 can receive an outer sheath (not shown), generally metal, within which the sheath 40 is inserted and immobilized in rotation due to force fitting or for example the use of glue to fix together the sheath 40 and the shirt.
Dans la suite de la description, le terme « gaine » devra par conséquent être interprété de manière non limitative comme désignant également un ensemble constitué d'une gaine 40 et d'une telle chemise.  In the remainder of the description, the term "sheath" should therefore be interpreted in a nonlimiting manner as also denoting an assembly consisting of a sheath 40 and such a jacket.
A titre d'exemple, un effort de poussée appliqué sur une partie de la gaine 40 pourrait également l'être sur la chemise pour obtenir un résultat équivalent.  By way of example, a thrust force applied to a portion of the sheath 40 could also be applied to the jacket to obtain an equivalent result.
De préférence, la gaine 40 comporte des rainures 42 et 44 hélicoïdales, diamétralement opposés, avec lesquelles les extrémités libres des ergots 32 et 34 de la cupule 30 coopèrent en fonctionnement. La gaine 40 comporte une paroi 46 interne pourvue desdites rainures hélicoïdales 42 et 44.  Preferably, the sheath 40 comprises grooves 42 and 44 helical diametrically opposed, with which the free ends of the lugs 32 and 34 of the cup 30 cooperate in operation. The sheath 40 has an inner wall 46 provided with said helical grooves 42 and 44.
La gaine 40 comporte, à son extrémité axiale inférieure, une jupe 48 présentant un diamètre externe supérieur et délimitant un épaulement 47 au niveau de son raccordement avec la partie de la gaine 40 s'étendant axialement au dessus.  The sheath 40 comprises, at its lower axial end, a skirt 48 having an upper outer diameter and delimiting a shoulder 47 at its connection with the portion of the sheath 40 extending axially above.
Un tel épaulement 47 est généralement présent lorsque le dispositif comporte une chemise solidaire de la gaine 40, la dimension radiale de l'épaulement 47 correspond alors à l'épaisseur de la chemise de sorte que la chemise et la jupe 48 de la gaine 40 aient un même diamètre externe, leurs surfaces cylindriques externes se prolongeant axialement l'une par rapport à l'autre.  Such a shoulder 47 is generally present when the device comprises a liner integral with the sheath 40, the radial dimension of the shoulder 47 then corresponds to the thickness of the liner so that the liner and the skirt 48 of the sheath 40 have the same outer diameter, their outer cylindrical surfaces extending axially relative to each other.
La gaine 40 comporte, radialement à l'intérieur, une face 49 annulaire de butée visible sur la figure 2 dont la fonction sera décrite ultérieurement. La face 49 annulaire de butée est réalisée au début de la jupe 48, ici sensiblement agencée axialement au niveau de l'épaulement 47. The sheath 40 comprises, radially on the inside, an annular abutment face 49 visible in FIG. 2, the function of which will be described later. The annular abutment face 49 is formed at the beginning of the skirt 48, here substantially axially arranged at the shoulder 47.
La gaine 40 comporte respectivement un bord 50 supérieur situé à son extrémité axiale supérieure et un bord 52 inférieur situé à son extrémité axiale inférieure formée par ladite jupe 48, lesdits bords 50 et 52 étant circonférentiellement continus.  The sheath 40 comprises respectively an upper edge 50 located at its upper axial end and a lower edge 52 at its lower axial end formed by said skirt 48, said edges 50 and 52 being circumferentially continuous.
La gaine 40 est destinée à être montée par encliquetage sur le guide 14 pour obtenir, après montage, le dispositif 10 représenté notamment à la figure 2.  The sheath 40 is intended to be mounted by snapping on the guide 14 to obtain, after assembly, the device 10 shown in particular in FIG.
Lors du montage, la gaine 40 est emmanchée axialement du haut vers le bas sur le guide 14, suivant la flèche « I » représentée sur la figure 1.  During assembly, the sheath 40 is fitted axially from top to bottom on the guide 14, along the arrow "I" shown in FIG.
Dans un tel dispositif 10, la mise en rotation du guide 14 par l'intermédiaire de son embase 18 par rapport à la gaine 40 provoque un mouvement axial de la cupule 30, plus précisément un mouvement de montée ou un mouvement de descente de la cupule 30 selon le sens de rotation.  In such a device 10, the rotation of the guide 14 through its base 18 relative to the sheath 40 causes axial movement of the cup 30, specifically a rising movement or a descent movement of the cup 30 depending on the direction of rotation.
Le bâton 12 de produit cosmétique se déplace axialement avec la cupule 30 entre lesdites position escamotée et position d'application.  The stick 12 of cosmetic product moves axially with the cup 30 between said retracted position and application position.
Dans l'exemple de réalisation, le guide 14, la cupule 30 et la gaine 40 sont respectivement réalisés en matière plastique.  In the exemplary embodiment, the guide 14, the cup 30 and the sheath 40 are respectively made of plastics material.
En variante non représentée du dispositif 10, le guide 14 comporte une seule glissière, la cupule 30 comporte un unique ergot associé et la gaine 40 une rainure hélicoïdale.  In a variant not shown of the device 10, the guide 14 comprises a single slide, the cup 30 has a single associated pin and the sheath 40 a helical groove.
Le guide 14 comporte, axialement à son extrémité supérieure, un rebord 54 qui s'étend radialement en saillie vers l'extérieur. Le rebord 54 comporte une face 56 inférieure.  The guide 14 comprises, axially at its upper end, a flange 54 which extends radially projecting outwardly. The rim 54 has a lower face 56.
Le rebord 54 est circonférentiellement interrompu au niveau de l'extrémité supérieure ouverte de la glissière 24 grâce à quoi le guide 14 peut se déformer radialement pour faciliter le montage de la gaine 40 avant de reprendre sa forme initiale. La gaine 40 présente, axialement au dessus de la jupe 48, un diamètre intérieur qui est sensiblement égal au diamètre extérieur du corps 16 du guide 14 de sorte que, après montage, le jeu radial entre la gaine 40 et le guide 14 est très faible. The flange 54 is circumferentially interrupted at the open upper end of the slide 24 whereby the guide 14 can deform radially to facilitate the assembly of the sheath 40 before returning to its original shape. The sheath 40 has, axially above the skirt 48, an inside diameter which is substantially equal to the outside diameter of the body 16 of the guide 14 so that, after assembly, the radial clearance between the sheath 40 and the guide 14 is very small. .
Dans un dispositif 10 selon l'art antérieur, il est prévu des moyens de butée pour limiter le débattement axial entre la pièce 14 et la gaine 40 à un jeu axial déterminé.  In a device 10 according to the prior art, stop means are provided to limit the axial displacement between the part 14 and the sheath 40 at a determined axial clearance.
C'est la raison pour laquelle, outre le rebord 54, le guide 14 comporte un épaulement 55 qui s'étend radialement vers l'extérieur et qui est (normalement) destiné à coopérer avec la face 49 annulaire de butée située à radialement à l'intérieur de la gaine 40.  This is the reason why, in addition to the rim 54, the guide 14 has a shoulder 55 which extends radially outwards and which is (normally) intended to cooperate with the annular abutment face 49 situated radially outwardly. inside the sheath 40.
Les moyens de butée d'un dispositif selon l'art antérieur sont généralement constitués, d'une part, par le rebord 54 du guide 14 et, d'autre part, par l'épaulement 55 du guide 14.  The stop means of a device according to the prior art generally consist, on the one hand, by the rim 54 of the guide 14 and, on the other hand, by the shoulder 55 of the guide 14.
Le rebord 54 forme une butée supérieure contre la face 56 inférieure duquel le bord 50 de la gaine 40 vient en appui et l'épaulement 55 forme une butée inférieure contre laquelle la face 49 annulaire de butée de la gaine 40 vient en appui.  The flange 54 forms an upper abutment against the lower face 56 of which the edge 50 of the sheath 40 abuts and the shoulder 55 forms a lower abutment against which the annular abutment face 49 of the sheath 40 abuts.
Cependant et tel qu'expliqué en préambule, la présence d'un tel jeu axial entre le guide 14 et la gaine 40 conduit à un manque de précision en fonctionnement et à une perception négative quant à la qualité du dispositif 10.  However, as explained in the preamble, the presence of such axial clearance between the guide 14 and the sheath 40 leads to a lack of precision in operation and to a negative perception as to the quality of the device 10.
Le dispositif 10 comporte dans une portion 58 inférieure du guide 14, axialement comprise entre l'épaulement 55 et l'embase 18, des moyens 60 de rattrapage du jeu axial. La portion 58 inférieure du guide 14 s'étend axialement sur une hauteur globalement similaire à celle de la jupe 48 de la gaine 40.  The device 10 comprises in a lower portion 58 of the guide 14, axially between the shoulder 55 and the base 18, means 60 for catching the axial play. The lower portion 58 of the guide 14 extends axially on a height generally similar to that of the skirt 48 of the sheath 40.
Selon une caractéristique importante de l'invention, les moyens 60 de rattrapage du jeu axial sont aptes à annuler le jeu axial entre le guide 14 et la gaine 40.  According to an important characteristic of the invention, the means 60 for compensating the axial play are able to cancel the axial clearance between the guide 14 and the sheath 40.
Les moyens 60 de rattrapage du jeu axial sont réalisés en une seule pièce, monobloc, avec le guide 14. Les moyens 60 de rattrapage sont disposés dans la portion 58 inférieure, située axialement au dessus de l'embase 18 du guide 14. The means 60 for compensating the axial play are made in one piece, in one piece, with the guide 14. The means 60 of catch-up are arranged in the lower portion 58 located axially above the base 18 of the guide 14.
Les moyens 60 de rattrapage du jeu axial sont déformables élastiquement selon la direction axiale.  The means 60 for catching the axial play are elastically deformable in the axial direction.
Les moyens 60 de rattrapage sont conformés pour exercer sur la gaine 40, un effort « P » de poussée (représenté schématiquement avec une flèche sur la figure 2) afin d'annuler le jeu axial et de provoquer la venue en butée de la gaine 40 contre un moyen de butée axiale du guide 14.  The catch-up means 60 are shaped to exert on the sheath 40 a thrust force "P" (shown schematically with an arrow in FIG. 2) in order to cancel the axial play and cause the sheath 40 to come into abutment. against an axial abutment means of the guide 14.
L'effort P de poussée est exercé axialement du bas vers le haut par les moyens 60 de rattrapage sur une partie inférieure de la gaine 40, de préférence sur le bord inférieur 52 de la jupe 48 de la gaine 40.  The thrust force P is exerted axially from the bottom to the top by the catching means 60 on a lower part of the sheath 40, preferably on the lower edge 52 of the skirt 48 of the sheath 40.
En variante non représentée et comme indiqué précédemment, l'effort de poussée pourrait être exercé par les moyens 60 de rattrapage sur une chemise solidaire de la gaine 40.  As a variant not shown and as indicated above, the thrust force could be exerted by the catching means 60 on a jacket integral with the sheath 40.
Tel que représenté sur les figures 2 et suivantes, le bord supérieur 50 de la gaine 40 sollicitée par l'effort P de poussée vient axialement en butée contre la face 56 inférieure du rebord 54 du guide 14 grâce à quoi le jeu axial est alors annulé.  As shown in Figures 2 and following, the upper edge 50 of the sheath 40 biased by the thrust force P is axially in abutment against the lower face 56 of the rim 54 of the guide 14, whereby the axial clearance is then canceled. .
Comme on peut le voir sur la figure 2, les moyens de butée axiale formés par l'épaulement 55 et la face 49 et auparavant destinés à bloquer axialement la gaine 40 relativement au guide 14 sont devenus inopérants.  As can be seen in Figure 2, the axial abutment means formed by the shoulder 55 and the face 49 and previously intended to axially lock the sheath 40 relative to the guide 14 have become inoperative.
L'épaulement 55 et la face 49 sont séparés axialement l'un de l'autre du jeu axial qui aurait existé entre le guide 14 et la gaine 40 en l'absence de moyens 60 de rattrapage, jeu axial que les moyens 60 de rattrapage ont permis d'annuler.  The shoulder 55 and the face 49 are axially separated from one another by the axial clearance that would have existed between the guide 14 and the sheath 40 in the absence of catching means 60, axial clearance that the means 60 of catching up have allowed to cancel.
Avantageusement, les moyens 60 de rattrapage comportent au moins deux plots 62 qui, s'étendant radialement en saillie à partir de la portion 58 inférieure du guide 14, au-delà de la surface externe du guide 14, comportent chacun une surface 64 d'appui. Advantageously, the catch-up means 60 comprise at least two studs 62 which, extending radially projecting from the lower portion 58 of the guide 14, beyond the outer surface of the guide 14, each comprise a bearing surface 64.
De préférence, la surface 64 d'appui est plane et s'étend dans un plan orthogonal à l'axe A.  Preferably, the support surface 64 is flat and extends in a plane orthogonal to the axis A.
La surface 64 d'appui de chaque plot 62 coopère avec un tronçon du bord 52 inférieur de la gaine 40 sur lequel ledit effort de poussée est appliqué.  The bearing surface 64 of each stud 62 cooperates with a portion of the lower edge 52 of the sheath 40 on which said thrust force is applied.
Les moyens 55, 49 de butée inférieure protègent avantageusement les moyens 60 de rattrapage formés par les plots 62 lors du montage, en particulier en cas de sur course de la gaine 40 par rapport au guide 14, évitant toute détérioration des plots 62.  The lower stopper means 55, 49 advantageously protect the catching means 60 formed by the pads 62 during assembly, in particular in case of stroke of the sheath 40 with respect to the guide 14, avoiding any deterioration of the pads 62.
Chaque plot 62 est relié radialement au guide 14 par l'intermédiaire d'une poutre 66 dont les extrémités se raccordent aux bords 67 et 69, circonférentiellement opposés, d'une fenêtre 68 ménagée dans le guide 14.  Each stud 62 is radially connected to the guide 14 via a beam 66 whose ends are connected to the circumferentially opposite edges 67 and 69 of a window 68 formed in the guide 14.
Chacun des plots 62 est positionné au centre de la poutre 66, soit à égale distance des bords 67 et 69 de la fenêtre 68 ménagée dans la portion 58 du guide 14.  Each of the pads 62 is positioned at the center of the beam 66, equidistant from the edges 67 and 69 of the window 68 formed in the portion 58 of the guide 14.
La poutre 66 est libre de se déformer axialement dans la fenêtre 68, notamment en flexion lors du montage, avant d'exercer par réaction ledit effort P de poussée sur le bord 52 inférieur de la gaine 40.  The beam 66 is free to deform axially in the window 68, in particular in bending during assembly, before exerting by reaction said thrust force P on the lower edge 52 of the sheath 40.
De préférence, les deux plots 62 des moyens 60 de rattrapage sont agencés sur le guide 14 diamétralement à l'opposé l'un de l'autre.  Preferably, the two pads 62 of the catching means 60 are arranged on the guide 14 diametrically opposite to each other.
En variante, lorsque les moyens 60 de rattrapage comportent plus de deux plots 62, par exemple trois ou quatre plots, lesdits plots sont avantageusement répartis angulairement de manière régulière sur le guide 14.  As a variant, when the catch-up means 60 comprise more than two studs 62, for example three or four studs, said studs are advantageously angularly distributed regularly over the guide 14.
Le dispositif 10 comporte des moyens 70 de freinage, distincts des moyens 60 de rattrapage. Comme les moyens 60 de rattrapage, les moyens 70 de freinage sont réalisés en une seule pièce avec le guide 14, plus précisément avec la portion 58 dans laquelle lesdits moyens 70 de freinage comme les moyens 60 de rattrapage sont disposés. The device 10 comprises braking means 70, distinct from the catching means 60. As the catching means 60, the braking means 70 are made in one piece with the guide 14, more precisely with the portion 58 in which said braking means 70 as the catch-up means 60 are arranged.
Les moyens 70 de freinage s'étendent dans un plan orthogonal à l'axe A du dispositif 10.  The braking means 70 extend in a plane orthogonal to the axis A of the device 10.
Les moyens 70 de freinage sont constitués par au moins une patte 72, préférentiellement deux pattes 72. La ou les pattes 72 s'étendent circonférentiellement suivant ledit plan orthogonal à l'axe A du dispositif 10.  The braking means 70 consist of at least one tab 72, preferably two tabs 72. The tab or tabs 72 extend circumferentially along said plane orthogonal to the axis A of the device 10.
Dans l'exemple de réalisation, les moyens 70 de freinage comportent au total quatre pattes 72 qui sont diamétralement opposées par paire. De préférence, les quatre pattes 72 sont comprises dans un même plan orthogonal à l'axe A, c'est-à-dire ne sont pas décalées axialement les unes par rapport aux autres.  In the exemplary embodiment, the braking means 70 comprise a total of four tabs 72 which are diametrically opposed in pairs. Preferably, the four tabs 72 are included in the same plane orthogonal to the axis A, that is to say are not axially offset relative to each other.
Tel que représenté sur les figures 4 et 6, les moyens 60 de rattrapage sont agencés circonférentiellement entre deux moyens 70 de freinage, chacun des deux plots 62 étant agencés entre deux pattes 72.  As represented in FIGS. 4 and 6, the catch-up means 60 are arranged circumferentially between two braking means 70, each of the two pads 62 being arranged between two tabs 72.
Les pattes 72 formant les moyens 70 de freinage sont flexibles radialement, chaque patte 72 étant reliée au guide 14 par l'une de ses extrémités dont l'autre extrémité libre est susceptible de débattre radialement dans le plan orthogonal à l'axe A pour appliquer un effort de freinage.  The tabs 72 forming the braking means 70 are radially flexible, each tab 72 being connected to the guide 14 by one of its ends whose other free end is capable of radially speaking in the plane orthogonal to the axis A to apply a braking effort.
Chaque patte 72 est ménagée individuellement dans une fenêtre de la portion 58 du guide 14 qui en comporte par conséquent quatre dans l'exemple de réalisation.  Each tab 72 is individually formed in a window of the portion 58 of the guide 14 which therefore comprises four in the embodiment.
En variante non représentée, une paire pattes 72 est ménagée dans une même fenêtre, les extrémités libres de chacune des pattes 72 se faisant faces et chaque patte 72 étant reliée à l'un des bords axiaux de la fenêtre.  In a variant not shown, a pair of legs 72 is formed in the same window, the free ends of each of the tabs 72 being faces and each tab 72 being connected to one of the axial edges of the window.
Chaque patte 72 comporte au moins une zone 74 de frottement qui est destinée à coopérer avec une surface 76 de frottement située radialement en vis-à-vis et ici solidaire de la gaine 40. Each tab 72 comprises at least one friction zone 74 which is intended to cooperate with a surface 76 of friction located radially vis-à-vis and here secured to the sheath 40.
Avantageusement, la zone 74 de frottement de chaque patte 72 est susceptible de varier en fonction des applications et du couple de freinage désiré.  Advantageously, the zone 74 of friction of each tab 72 is likely to vary depending on the applications and the desired braking torque.
Les moyens 70 de freinage du dispositif 10 s'étendent dans un plan orthogonal à l'axe A autour duquel le guide 14 est mis en rotation par rapport à la gaine 40.  The means 70 for braking the device 10 extend in a plane orthogonal to the axis A around which the guide 14 is rotated relative to the sheath 40.
La mise en rotation du guide 14 par l'intermédiaire de l'embase 18 par rapport à la gaine 40 provoque un mouvement axial de la cupule 30, ledit mouvement étant selon le sens de rotation un mouvement de montée ou de descente.  The rotation of the guide 14 through the base 18 relative to the sheath 40 causes an axial movement of the cup 30, said movement being in the direction of rotation an up or down movement.
Lors de la mise en rotation du guide 14 pour commander la cupule 30 en mouvement, la zone 74 de frottement de chaque patte 72 coopère avec la surface 76 de frottement de la gaine 40 déterminant le couple de freinage du dispositif 10.  During the rotation of the guide 14 to control the cup 30 in motion, the zone 74 of friction of each tab 72 cooperates with the friction surface 76 of the sheath 40 determining the braking torque of the device 10.
Dans l'exemple de réalisation, les moyens 60 de rattrapage permettent de positionner axialement avec précision les pattes 72 formant les moyens 70 de freinage par rapport à la surface 76 de frottement.  In the exemplary embodiment, the catch-up means 60 make it possible to axially position the tabs 72 forming the braking means 70 with respect to the friction surface 76 precisely.
Avantageusement, on améliore le contrôle du couple de freinage grâce à la précision ainsi obtenue avec la combinaison des moyens 60 de rattrapage du jeu axial et des moyens 70 de freinage réalisés selon les enseignements de l'invention.  Advantageously, control of the braking torque is improved by virtue of the precision thus obtained with the combination of means 60 for compensating the axial clearance and braking means 70 made according to the teachings of the invention.

Claims

REVENDICATIONS
1. Dispositif (10) pour un bâton (12) de produit cosmétique, notamment un bâton de rouge à lèvres, ledit dispositif (10) comportant au moins un premier élément (14), une cupule (30) destinée à recevoir le bâton (12) de produit cosmétique et un deuxième élément (40), le deuxième élément (40) étant monté par encliquetage sur le premier élément (14) avec un jeu axial déterminé, dans lequel la mise en rotation du premier élément (14) par rapport au deuxième élément (40) provoque un mouvement axial de la cupule (30),  1. Device (10) for a stick (12) of cosmetic product, in particular a stick of lipstick, said device (10) comprising at least a first element (14), a cup (30) intended to receive the stick ( 12) of cosmetic product and a second element (40), the second element (40) being snap-fitted on the first element (14) with a determined axial clearance, in which the rotation of the first element (14) relative to at the second element (40) causes axial movement of the cup (30),
caractérisé en ce que le dispositif comporte des moyens (60) de rattrapage pour annuler le jeu axial entre le premier élément (14) et le deuxième élément (40) et des moyens (70) de freinage, distincts des moyens (60) de rattrapage, les moyens (60) de rattrapage et les moyens (70) de freinage étant respectivement réalisés en une seule pièce avec le premier élément (14).  characterized in that the device comprises catch-up means (60) for canceling the axial clearance between the first element (14) and the second element (40) and means (70) of braking, distinct from the means (60) of catching up , the catching means (60) and the braking means (70) being respectively made in one piece with the first element (14).
2. Dispositif selon la revendication 1, caractérisé en ce que les moyens (60) de rattrapage du jeu axial entre le premier élément (14) et le deuxième élément (40) sont déformables élastiquement selon la direction axiale pour exercer, sur le deuxième élément (40), un effort (P) de poussée afin de provoquer la venue en butée du deuxième élément (40) contre des moyens (54) de butée solidaires du premier élément (14).  2. Device according to claim 1, characterized in that the means (60) for catching the axial play between the first element (14) and the second element (40) are elastically deformable in the axial direction to exert on the second element (40), a thrust (P) to cause the abutment of the second element (40) against abutment means (54) integral with the first element (14).
3. Dispositif selon la revendication 2, caractérisé en ce que les moyens de butée comportent au moins un rebord (54) qui, agencé à une extrémité supérieure du premier élément (14) s'étend radialement en saillie vers l'extérieur.  3. Device according to claim 2, characterized in that the abutment means comprise at least one flange (54) which, arranged at an upper end of the first member (14) extends radially outwardly projecting.
4. Dispositif selon la revendication 3, caractérisé en ce que le deuxième élément (40) comporte un bord (50) supérieur qui est axialement en butée contre une face (56) inférieure du rebord (54) du premier élément (14) sous l'action de l'effort (P) de poussée. 4. Device according to claim 3, characterized in that the second element (40) comprises an upper edge (50) which is axially in abutment against a lower face (56) of the flange (54) of the first element (14) under the action of the thrust force (P).
5. Dispositif selon l'une des revendications 2 à 4, caractérisé en ce que l'effort (P) de poussée est exercé par les moyens (60) de rattrapage sur une partie inférieure du deuxième élément (40). 5. Device according to one of claims 2 to 4, characterized in that the thrust (P) is exerted by the means (60) of catching on a lower portion of the second member (40).
6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens (60) de rattrapage comportent au moins deux plots (62) qui, s'étendant radialement en saillie à partir du premier élément (14), comportent chacun une surface (64) d'appui qui coopère avec un tronçon d'un bord (52) inférieur du deuxième élément (40).  6. Device according to any one of the preceding claims, characterized in that the means (60) of catching comprise at least two studs (62) which, extending radially projecting from the first element (14), each comprise a support surface (64) which cooperates with a section of a lower edge (52) of the second element (40).
7. Dispositif selon la revendication 6, caractérisé en ce que le plot (62) est relié au premier élément (14) par l'intermédiaire d'une poutre (66) dont les extrémités se raccordent aux bords (67, 69), circonférentiellement opposés, d'une fenêtre (68) ménagée dans le premier élément (14).  7. Device according to claim 6, characterized in that the stud (62) is connected to the first element (14) via a beam (66) whose ends are connected to the edges (67, 69), circumferentially opposed, a window (68) formed in the first element (14).
8. Dispositif selon l'une des revendications 6 ou 7, caractérisé en ce que lesdits au moins deux plots (62) des moyens (60) de rattrapage sont agencés diamétralement à l'opposé l'un de l'autre sur le premier élément (14).  8. Device according to one of claims 6 or 7, characterized in that said at least two pads (62) means (60) catch are arranged diametrically opposite to each other on the first element (14).
9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens (60) de rattrapage sont agencés circonférentiellement entre deux moyens (70) de freinage.  9. Device according to any one of the preceding claims, characterized in that the means (60) of catching are arranged circumferentially between two means (70) of braking.
10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens (70) de freinage comportent au moins deux pattes (72) qui, flexibles radialement, comportent chacune au moins une zone (74) de frottement destinée à coopérer avec une surface (76) de frottement radialement en vis-à-vis solidaire du deuxième élément (40).  10. Device according to any one of the preceding claims, characterized in that the means (70) for braking comprise at least two tabs (72) which, radially flexible, each comprise at least one zone (74) of friction intended to cooperate with a surface (76) of friction radially vis-à-vis secured to the second element (40).
PCT/EP2017/059133 2016-04-21 2017-04-18 Device for a stick of cosmetic product, notably a lipstick WO2017182445A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780024958.6A CN109068831A (en) 2016-04-21 2017-04-18 For cosmetic stick, particularly the device of lipstick stick

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1653527 2016-04-21
FR1653527A FR3050365B1 (en) 2016-04-21 2016-04-21 DEVICE FOR A COSMETIC PRODUCT STICK, IN PARTICULAR A LIP RED STICK

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WO2017182445A1 true WO2017182445A1 (en) 2017-10-26

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CN (1) CN109068831A (en)
FR (1) FR3050365B1 (en)
WO (1) WO2017182445A1 (en)

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TWI707643B (en) * 2019-10-23 2020-10-21 黃秋澤 Friction structure of rotary lifting assembly of cosmetic box
EP3864999A1 (en) * 2020-02-13 2021-08-18 Albea Plastic Metallizing Technologies (Shanghai) Co., Ltd. Mechanism for cosmetic container and container comprising said mechanism
WO2021250190A1 (en) * 2020-06-11 2021-12-16 L'oreal Packaging device of a cosmetic product block

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US5348410A (en) * 1992-10-30 1994-09-20 Hidan Co. Cylindrical cosmetic container with flexible brake
WO1995007639A1 (en) * 1993-09-13 1995-03-23 Reboul-Smt Holder mechanism for stick product and holder fitted with such a mechanism
FR2787970A1 (en) * 1999-01-05 2000-07-07 Qualipac Sa Lipstick case has propelling mechanism in form of studs on wall of holder and elastic vanes on inner sleeve to provide friction with outer one

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI707643B (en) * 2019-10-23 2020-10-21 黃秋澤 Friction structure of rotary lifting assembly of cosmetic box
EP3864999A1 (en) * 2020-02-13 2021-08-18 Albea Plastic Metallizing Technologies (Shanghai) Co., Ltd. Mechanism for cosmetic container and container comprising said mechanism
WO2021250190A1 (en) * 2020-06-11 2021-12-16 L'oreal Packaging device of a cosmetic product block
FR3111261A1 (en) * 2020-06-11 2021-12-17 L'oreal Device for packaging a block of cosmetic product

Also Published As

Publication number Publication date
FR3050365A1 (en) 2017-10-27
CN109068831A (en) 2018-12-21
FR3050365B1 (en) 2018-05-18

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