Device for a cosmetic product, in particular a lipstick tube

Abstract

The invention proposes a device (10) intended to be mounted on an actuation base of a cosmetic product application receptacle, in particular a cosmetic product stick (12), said device (10) being designed to dispense the cosmetic product by at least one rotational movement, said device (10) comprising at least one guide (14), a cup (30) for receiving the cosmetic product and a sheath (40), the sheath (40) internally comprising at least one helical groove (42, 44) and the guide (14) being rotationally mounted in the sheath (40), the rotation of the guide (14) relative to the sheath (40) causing an axial movement of the cup (30) between a fully deployed position and a fully retracted position,the device (10) comprising at least one means for locking the guide (14) against rotation relative to the sheath (40) when the cup (30) is in the fully deployed position and / or the fully retracted position and / or close to being in the fully deployed position and / or the fully retracted position. Figure for the abbreviation: Figure 2,

Description

Title of the invention: Device for a cosmetic product, in particular a lipstick tube. Technical field of the invention

[0001] The invention relates to a device (also called a mechanism) for the packaging of a cosmetic product, such as a stick of cosmetic product, in particular a stick of lipstick.

[0002] The invention relates more particularly to a device intended to be mounted on an actuation base of a cosmetic product application receptacle comprising at least a first element classically called a guide, a cup intended to receive the cosmetic product stick and a second element classically called a sheath, in which the rotation of the guide relative to the sheath causes an axial movement of the cup resulting in the exit and / or entry of the cosmetic product. Technical background

[0003] Prior art is known of devices of this type used for the packaging of a cosmetic product, such as a stick of cosmetic product, in particular but not exclusively for a stick of lipstick.

[0004] The stick is held by its base in a cup which slides axially between at least one retracted position and a cosmetic product application position in which at least part of the cosmetic product stick extends axially out of the device.

[0005] In a known manner, such kinematics is obtained by means of a rotating mechanism comprising a guide and a sheath which, mounted concentrically, comprise for one at least one slide and for the other at least one helical groove which are respectively crossed radially by at least one lug integral with the cup carrying the rod.

[0006] The cup generally comprises a pair of lugs, the two lugs being arranged diametrically opposite each other, the guide then being provided with two slides and the sheath with two helical grooves.

[0007] The actuation of the mechanism is generally controlled manually by applying a rotational movement to the base of the device, which rotational movement is transmitted to the mechanism to cause axial displacement of the cup containing the cosmetic product.

[0008] During the actuation of the mechanism, it is possible that the lugs of the cup may come out of the slides and / or helical grooves, in particular at the end of the stroke, especially in the retracted position, if force is applied to the actuation.

[0009] Typically, the cup is made of polyoxymethylene (POM) or acrylonitrile butadiene styrene (ABS), while the other components are made of a different material. Although there is a relative difference in hardness between the parts, the cup's lugs regularly come out of the helical grooves of the sleeve and / or the guide rails.

[0010] Moreover, this problem is also present in the use of a single-material mechanism, that is to say a mechanism whose cup, sheath and guide are made of the same material, in particular a plastic material.

[0011] Using the same material to manufacture the mechanism is particularly advantageous for recycling after the cosmetic product has been used. Indeed, the presence of two different materials presents drawbacks during recycling, as the two parts must be separated.

[0012] The object of the invention is, in particular, to provide a solution for overcoming at least some of the drawbacks of the prior art, specifically a solution that prevents damage to the device if a user forces the actuation, particularly if the user forces the actuation by rotating it. Summary of the invention

[0013] Thus, the invention relates to a device intended to be mounted on an actuation base of a cosmetic product application receptacle, in particular a cosmetic product stick, said device being designed to dispense the cosmetic product by at least one rotational movement, said device comprising at least one guide, a cup intended to receive the cosmetic product and a sheath, the sheath internally comprising at least one helical groove and the guide being rotationally mounted in the sheath, the rotation of the guide relative to the sheath causing an axial movement of the cup between a fully deployed position and a fully retracted position.

[0014] According to the invention, the device includes at least one means for locking the guide against rotation relative to the sheath when the cup is in the fully deployed position and / or the fully retracted position and / or close to being in the fully deployed position and / or the fully retracted position.

[0015] The fully retracted position corresponds to a position in which the cosmetic product is inside the device for protection and storage and the cup is in the lower end-of-travel position.

[0016] The fully deployed position corresponds to a position in which the cosmetic product is deployed axially upwards so that its free end extends out of the device through the opening and the cup is in the upper end-of-stroke position.

[0017] The term “close to” means on the point of, at a short distance from, which is almost in fully deployed or fully retracted position.

[0018] Thus, when the cup is at the end of its upper or lower travel, or close to reaching the end of its upper or lower travel, the locking means stops the rotation of the guide relative to the sheath. Therefore, if the user forces the device to rotate, it is not the cup that acts as the end-travel locking means, but rather the rotational locking means between the guide and the sheath. This limits any risk of damage to the device, particularly the cup, such as deformation and / or premature wear leading, for example, to the cup being unexpectedly removed from the device, causing a malfunction.

[0019] According to different embodiments of the invention, which may be taken together or separately:

[0020] - the guide, the cup and the sheath are made of plastic,

[0021] - the guide, the cup and the sheath are made of the same plastic material,

[0022] - the plastic material is polypropylene,

[0023] - the device has an upper portion located towards an opening of the device through which the cosmetic product exits and an opposite lower portion,

[0024] - the rotation-blocking means is located at the upper portion of the device,

[0025] - the rotation-blocking means is located at the lower portion of the device,

[0026] - the rotation-blocking means comprises a plurality of stops configured for cooperate together

[0027] - at least one of the stops is located on the guide and cooperates with at least one another of the stops located on the sheath,

[0028] - at least one stop of the guide and at least one stop of the sheath are of the form complementary in order to cooperate together,

[0029] - one of the plurality of stops is a leg projecting axially from a base towards one free end and / or the other of the plurality of stops is a radial excess thickness of material,

[0030] - at least one stop of the guide is a lug projecting axially from a base towards a free end,

[0031] - at least one stop of the sheath is a radial excess thickness of material making projecting inwards towards the device,

[0032] - at least one stop of the guide is a radial overthickness of material protruding towards the outside of the device,

[0033] - at least one stop of the sheath is a tab projecting axially from a base towards a free end,

[0034] - the leg has a wide base and a narrow free end,

[0035] - the leg comprises two sides extending between the base and the free end,

[0036] - at least one side of the leg is vertical and cooperates with a vertical side of the radial excess material

[0037] - at least one side of the vertical leg cooperates with the vertical side of the on radial thickness of material when the cup is in the fully retracted position and / or close to being in the fully retracted position,

[0038] - the other side of the leg is inclined and cooperates with an inclined side of the on radial thickness of material,

[0039] - at least one of the inclined sides of the leg cooperates with the inclined side of the on radial thickness of material when the cup is in the fully deployed position and / or close to being in the fully deployed position,

[0040] - the cup comprises at least one lug projecting radially outwards and cooperating with at least one guide rail,

[0041] - at least one slide and at least one lug are configured to serve as means of preventing the cup from rotating relative to the guide when the cup is in the fully deployed position and / or the fully retracted position and / or close to being in the fully deployed position and / or the fully retracted position,

[0042] - at least one lug has two parallel flats configured to cooperate with walls of at least one helical groove in the sheath,

[0043] - the flat surfaces have an inclination similar to the inclination of a trajectory helical grooves.

[0044] The invention also relates to a cosmetic product application receptacle comprising a hood, an actuation base which includes a device as described above, the actuation base allowing the device to be actuated so as to allow the entry and / or exit of the cosmetic product. Brief description of the figures

[0045] The invention will be better understood, and other features and advantages thereof will become apparent upon reading the following detailed description of at least one embodiment of the invention given by way of purely illustrative and non-limiting example, with reference to the accompanying schematic drawings in which:

[0046] [Fig-1] [Fig.1] is a perspective view of a guide, a sheath and a cup forming a device for a cosmetic product stick according to a first embodiment in which the cup is in a fully deployed position;

[0047] [Fig.2] [Fig.2] is a perspective view of the assembled device of [Fig.1];

[0048] [Fig.3] [Fig.3] is a detailed view of the assembled device of [Fig.2];

[0049] [Fig.4] [Fig.4] is a cross-sectional view AA of the assembled device of the [Fig.2];

[0050] [Fig. 5] [Fig. 5] is a perspective view of the device assembled according to the first embodiment of [Fig.1] in which the cup is in a fully retracted position;

[0051] [Fig.6] [Fig.6] is a detailed view of the assembled device of [Fig.5];

[0052] [Fig.7] [Fig.7] is a cross-sectional view BB of the assembled device of the [Fig.5];

[0053] [Fig.8] [Fig.8] is a perspective view of a guide and a sheath forming a device for a stick of cosmetic product according to a second embodiment;

[0054] [Fig.9] [Fig.9] is a longitudinal cross-sectional view of the assembled device of the [Fig.8] in which the (absent) cupule is in a fully deployed position;

[0055] [Fig. 10] [Fig. 10] is a detailed view of the assembled device of [Fig. 9];

[0056] [Fig. 11] [Fig. 11] is a CC cross-sectional view of the assembled device the [Fig.9];

[0057] [Fig. 12] [Fig. 12] is a perspective view of the device assembled according to the second embodiment of [Fig. 8] in which the cup is in a fully retracted position;

[0058] [Fig. 13] [Fig. 13] is a longitudinal sectional view of the assembled device of [Fig. 12];

[0059] [Fig. 14] [Fig. 14] is a detailed view of the assembled device of [Fig. 13];

[0060] [Fig. 15] [Fig. 15] is a cross-sectional view DD of the assembled device the [Fig. 13];

[0061] [Fig. 16] [Fig. 16] is a transparent perspective detail view showing a particular shape of a lug of the cup of the device of [Fig.8]. Detailed description of the invention

[0062] By convention, the "axial" direction corresponds in the figures to that of the main axis A of the device (also called mechanism) intended to be mounted on an actuation base of a cosmetic product application receptacle, such as a cosmetic product stick, in particular a lipstick stick, and the "radial" direction is orthogonal to the axial direction.

[0063] In the detailed description of the figures that follows, the terms "upper" and "lower" or "top" and "bottom" will be used without limitation in reference to the axial direction, the upper part of the device corresponding to that through which the stick of cosmetic product comes out of the device for application.

[0064] Similarly, the terms "outside or external" and "inside or internal" are used with reference to the radial direction, an outside element being radially further away from axis A than an inside element.

[0065] Figures 1 to 7 illustrate a first embodiment of a device 10 intended to be mounted on an actuation base of a cosmetic product application receptacle according to the invention.

[0066] Figures 8 to 15 illustrate a second embodiment of a device 10 intended to be mounted on an actuation base of a cosmetic product application receptacle according to the invention.

[0067] Preferably, the cosmetic product (represented in dotted lines in [Fig.2]) is a stick 12 of cosmetic product and, more particularly, the stick 12 of cosmetic product is a lipstick stick intended to be applied by rubbing, alternatively a lip balm.

[0068] The device 10 is designed to expel the cosmetic product by at least one rotational movement.

[0069] The device 10 has an axis A, called the principal axis.

[0070] The device 10 comprises at least one first element, conventionally and hereafter called guide 14.

[0071] The guide 14 mainly comprises a tubular body 16 which extends axially from a base 18 forming the lower end of the guide 14 to an upper outlet opening 20 intended to be traversed by the cosmetic product stick 12.

[0072] The external surface of the base 18 is, for example, provided with grooves to facilitate its handling when using the device 10.

[0073] Preferably, the guide 14 comprises two slides, respectively a first slide 22 and a second slide 24, which are formed by slots radially traversing the wall of the body 16 and are arranged diametrically opposite each other.

[0074] The slides 22, 24 extend axially within the body 16 of the guide 14. The first slide 22 is axially closed at its upper end, while the second slide 24 is open. The slides 22, 24 are closed at their lower end, which is located on the side of the base 18.

[0075] The slides 22, 24 each have straight and parallel edges. The first slide 22 has at one of its axial ends an upper notch 26a and at the other of its ends a lower notch 28a, said notches 26a, 28b extending circumferentially.

[0076] In both embodiments, the second slide 24 also has upper and lower notches 26b, 28b.

[0077] In conventional systems, the notches 26a, 26b, 28a, 28b are intended to to form means for blocking the end of travel of a cup 30.

[0078] The device 10 includes the cup 30 which receives the stick 12 of cosmetic product as illustrated in [Fig.2].

[0079] The cup 30 is intended to be mounted sliding axially in the guide 14, between a fully retracted position and a fully deployed position.

[0080] The fully retracted position corresponds to a position in which the rod 12 is inside the device 10 for protection and storage and the cup 30 is in the lower end-of-travel position as illustrated in Figures 12 and 13.

[0081] The fully deployed position corresponds to a position in which the rod 12 is deployed axially upwards so that its free end extends out of the device 10 through the opening 20 and the cup 30 is in the upper end-of-stroke position as illustrated in Figures 1 and 2.

[0082] The cup 30 can also be in retracted intermediate positions and in deployed intermediate positions, called intermediate application positions.

[0083] The retracted intermediate positions correspond to positions in which the stick 12 is inside the device 10 for its protection and storage but without the cup 30 being at the end of its lower stroke.

[0084] The intermediate application positions correspond to positions in which the stick 12 is deployed axially upwards so that its free end extends out of the device 10 through the opening 20 and it is possible to apply the cosmetic product.

[0085] Preferably, the cup 30 has two lugs 32 which project radially outwards, said lugs 32 each being engaged in one of the slides 22, 24 of the guide 14 and passing through them to extend radially outwards beyond the external surface of the body 16 of the guide 14.

[0086] The cup 30 has a cylindrical wall which, extending axially over a given height, delimits a housing which receives the lower part of the stick 12 and a bottom.

[0087] In an alternative not shown, the cup is made in two parts respectively an upper cup intended to receive the stick of cosmetic product and a lower cup which, also sometimes called "cup motor", cooperates with the mechanism of the device to ensure sliding between the retracted and application positions.

[0088] In such a variant, the two parts of the cup are joined securely to each other, for example by interlocking.

[0089] The device 10 includes a second element, conventionally and hereafter called the sheath 40. As represented here, the sheath 40 has a cylindrical shape.

[0090] The sheath 40 can receive an outer jacket (not shown) inside of in which the sheath 40 is introduced and immobilized against rotation due to force assembly or, for example, the use of glue to fix the sheath 40 and the sleeve together.

[0091] In the rest of the description, the term "sheath" should therefore be interpreted in a non-limiting way as also designating an assembly consisting of a sheath 40 and such a sleeve.

[0092] Preferably, the sheath 40 has internally diametrically opposed helical grooves 42, 44 with which the free ends of the lugs 32 of the cup 30 cooperate during operation. The sheath 40 has an internal wall 46 provided with said helical grooves 42, 44.

[0093] The sheath 40 respectively comprises an upper edge 50 located at its upper axial end and a lower edge 52 located at its lower axial end, said edges 50 and 52 being circumferentially continuous.

[0094] The sheath 40 is intended to be mounted by snapping onto the guide 14 to obtain, after assembly, the devices 10 shown in particular in figures 2, 5 and 13.

[0095] The guide 14 is mounted for rotation in the sheath 40.

[0096] In such a device 10, the rotation of the guide 14 by means of its base 18 relative to sheath 40 causes an axial movement of cup 30, more precisely an upward or downward movement of cup 30 depending on the direction of rotation.

[0097] The cosmetic product stick 12 moves axially with the cup 30 between the fully deployed position and the fully retracted position.

[0098] In both embodiments shown, the guide 14, the cup 30 and the sheath 40 are advantageously made of plastic.

[0099] Preferably, the guide 14, the cup 30 and the sheath 40 are made of the same plastic material.

[0100] The plastic material may be selected from polypropylene (PP), polyethylene terephthalate (PET), recycled polyethylene terephthalate (R-PET), a thermoplastic elastomer (TPE), polyethylene (PE), such as low-density polyethylene (LDPE) and / or high-density polyethylene (HDPE), a composite material, a post-consumer recycled (PCR) material and / or a similar material.

[0101] This includes plastic material with a hardness between 70 shore A and 90 shore D.

[0102] Preferably, it is polypropylene and / or recycled or non-recycled polyethylene terephthalate.

[0103] Thus, advantageously, all parts of the device 10 are made of plastic material preferably chosen from polypropylene and / or polyethylene terephthalate.

[0104] The plastic parts can be easily obtained by injection and lead to a lightweight device 10.

[0105] Furthermore, the use of plastics, in particular similar plastics, for the entire device 10 facilitates recycling. In particular, polypropylene and polyethylene terephthalate are two plastics whose recycling cycle is well known.

[0106] The guide 14 has, axially at its upper end, a rim 54 which extends radially outwards.

[0107] The rim 54 is circumferentially interrupted at the open upper end of the slide 24, whereby the guide 14 can deform radially to facilitate the mounting of the sheath 40 before returning to its initial shape.

[0108] According to the invention, in the two illustrated embodiments, the device 10 includes a means for locking the guide 14 in rotation relative to the sheath 40 when the cup 30 is in the fully deployed position and / or the fully retracted position and / or close to being in the fully deployed position and / or the fully retracted position.

[0109] The term “close to” means on the point of, at a short distance from, which is almost in fully deployed or fully retracted position.

[0110] Advantageously, the rotation blocking means is located at an upper portion 56 of the device 10 and / or at a lower portion 58 of the device 10.

[0111] The upper portion 56 of the device 10 is located towards an opening 60 of the device 10 intended to be passed through by the stick 12 of cosmetic product and through which the cosmetic product exits.

[0112] The lower portion 58 is the portion opposite the upper portion 56 and at the level of which the base 18 is located.

[0113] Advantageously, the rotation blocking means comprises a plurality of stops configured to cooperate together.

[0114] In particular, at least one of the stops is located on the guide 14 and cooperates with at least one other of the stops located on the guide 40.

[0115] Thus, at least one stop of the guide 14 and at least one stop of the guide 40 can be of complementary shape so as to cooperate together.

[0116] In the first embodiment, the rotation blocking means is located at the lower portion 58 of the device 10. It consists of two stops, one of which is located on the guide 14 and the other on the sheath 40.

[0117] The stop located on the guide 14 is a radial protrusion 62 of material projecting from an external surface 64 of the guide 14. The protrusion 62 is disposed in a lower portion 58 of the guide 14 located axially above the base 18 of the guide 14.

[0118] The overthickness 62 is elongated in shape and extends axially from the base 18 towards the opening 56 of the device 10.

[0119] The excess thickness 62 of material comprises a vertical side 66 and an inclined side 68. In other words, the excess thickness 62 has a general trapezoidal shape.

[0120] The stop located on the sheath 40 is a tab 70 projecting axially from the lower edge 52 of the sheath 40. The tab 70 extends from a wide base at the lower edge of the sheath 40 to a narrow free end.

[0121] The leg 70 comprises a vertical side 72 and an inclined side 74. In other words, the leg 70 has a general trapezoidal shape.

[0122] In this first embodiment, when the cup 30 is in the fully retracted position and / or close to being in the fully retracted position, the vertical side 72 of the leg cooperates with the vertical side 66 of the radial overthickness 62 of material as illustrated in Figures 5 and 6.

[0123] Thus, when the cup 30 is at the end of its lower stroke or reaches the end of its lower stroke, the two stops 62, 70 come into contact. The rotation of the guide 14 relative to the sheath 40 is thus stopped in the downward direction of the cup 30, consequently blocking the rotation of the cup 30 in the downward direction.

[0124] Thus, unlike a conventional prior art device, it is not the lugs 32 of the cup 30 that serve as end-of-stroke locking but the stops 62, 70. This limits any risk of the cup 30 being stripped, in particular a disengagement of the lugs 32 from the slides 22, 24 of the guide 14 and / or from the helical grooves 42, 44 of the sheath 40.

[0125] The fully retracted position is the position of the cup 30 under the greatest stress and where the risk of failure is highest, since the cup 30 inside the device 10 is not visible. Advantageously, in this position, the vertical sides 66, 72 of the stops 62, 70 come into contact, allowing them to withstand greater resistance.

[0126] When the cup 30 is in the fully deployed position and / or close to being in the fully deployed position, the inclined sides 68, 74 of the tab 70 and the radial excess material 62 cooperate as illustrated in Figures 2 and 3. In other words, at the upper end of the cup 30's travel, the two inclined sides 68, 74 of the stops 62, 70 come into contact, blocking the upward rotation of the guide 14 relative to the sleeve 40, and consequently blocking the upward movement of the cup 30. Here again, it is the stops 62, 70 that act as the end-of-travel stop and not the lugs 32 of the cup 30. This limits any risk of the cup 30 stripping, in particular the lugs 32 coming out of the slides 22, 24 of the guide 14 and / or the helical grooves 42, 44 of the sheath 40.

[0127] In the second embodiment, the principle of rotational locking is similar. Here again, it is not the lugs 32 of the cup 30 that serve as the end-of-stroke lock, but stops located on the sleeve and the guide. This limits any risk of the cup 30 stripping, in particular the lugs 32 coming out of the slides 22, 24 of the guide 14 and / or the helical grooves 42, 44 of the sleeve 40.

[0128] This second embodiment differs from the first, in the location of the stops and their shape.

[0129] In the second embodiment, the rotation blocking means is located at the upper portion 56 of the device 10. It consists of two stops, one of which is located on the guide 14 and the other on the sheath 40.

[0130] The stop located on the guide 14 is a tab 76 projecting axially from the upper rim 54 of the guide 14. The tab 76 is in the extension of the upper rim 54 of the guide 14 at the level of the notch 26b and the interruption of the circumference of the rim 54.

[0131] The leg 76 extends from a wide base at the level of the upper rim 54 of the guide 14 to a narrow free end.

[0132] Leg 76 includes a vertical side 78 and an inclined side 80. In other words, leg 76 has a general triangular shape.

[0133] The stop located on the sheath 40 is a radial overstud 82 of material projecting from the internal surface of the sheath 40. The overstud 82 is disposed in an upper portion 56 of the sheath 40.

[0134] The extra thickness 82 is elongated and extends circumferentially at the upper edge 54 of the sheath 40. The extra thickness 82 of material has a vertical side 84 and an inclined side 86. In other words, the extra thickness 82 has a general triangular shape.

[0135] As in the first embodiment, when the cup 30 is in the fully retracted position and / or close to being in the fully retracted position, the vertical side 78 of the leg 76 cooperates with the vertical side 84 of the radial overthickness 82 of material as illustrated in Figures 13 and 14.

[0136] When the cup 30 is in the fully deployed position and / or close to being in the fully deployed position, it is the inclined sides 80, 86 of the leg 76 and the radial overthickness 82 of material that cooperate as illustrated in figures 9 and 10.

[0137] In each of the embodiments, advantageously, the stops 62, 70, 76, 82 have a vertical side 66, 72, 78, 84 and an inclined side 68, 74, 80, 86, implying a general triangular or trapezoidal shape.

[0138] This particular shape with a wide base helps to reinforce the resistance of the stops 62, 70, 76, 82 to prevent their breakage, particularly when the user applies force. rotating.

[0139] In addition, the inclined sides 68, 74, 80, 86 limit the reduction of the rotational movement of the cup 30. Due to this particular shape, the stops 62, 70, 76, 82 do not hinder the raising and lowering of the cup 30, which can be done with the same amplitude as for a conventional device.

[0140] The stops 62, 70, 76, 82 are configured so that in the fully retracted position of the cup 30, the position most stressed by the user, it is the vertical sides 66, 72, 78, 84 that cooperate, allowing them to absorb a greater resistance.

[0141] Moreover, in each of the two embodiments shown, the two lugs 32 of the cup 30 are generally rounded in shape and advantageously have two parallel flats 90 configured to cooperate with walls 92 of the helical grooves 42, 44 of the sheath 40.

[0142] Preferably, the flats 90 have an inclination similar to the inclination of the trajectory of the helical grooves 42, 44, as can be seen in [Fig.16].

[0143] In other words, each lug 32 extends in a direction similar to the direction of the helical groove 42, 44 in which it is engaged.

[0144] This particular shape of the lugs 32 is adapted to the shape of the helical grooves 42, 44 so as to facilitate their sliding and to ensure that they remain lodged there without coming out, even if a user forces the rotation. The risk of stripping the cup 30 is thus reduced.

[0145] The device 10 is intended to be a component of a receptacle (not shown), also called a case, for a cosmetic product.

[0146] Generally, the receptacle includes a hood which is associated with an actuation base having a complementary shape, the base and the hood together defining an external contour of the receptacle.

[0147] The receptacle further includes the device 10 for dispensing the cosmetic product stick as described above.

[0148] By way of non-limitation, the hood, the base of the receptacle and the device 10 have a cylindrical shape with a circular cross-section.

[0149] Preferably, the hood is removable. The hood is capable of occupying at least one open position in which the hood is separated from the base, in particular to allow the application of the cosmetic product, and a closed position in which the hood is attached to the base.

Claims

1.

2.

3.

4. Demands Device (10) intended to be mounted on an actuation base of a cosmetic product application receptacle, in particular a cosmetic product stick (12), said device (10) being designed to dispense the cosmetic product by at least one rotational movement, said device (10) comprising at least one guide (14), a cup (30) for receiving the cosmetic product and a sheath (40), the sheath (40) internally comprising at least one helical groove (42, 44) and the guide (14) being rotationally mounted in the sheath (40), the rotation of the guide (14) relative to the sheath (40) causing an axial movement of the cup (30) between a fully deployed position and a fully retracted position,the device (10) comprising at least one means for rotationally locking the guide (14) relative to the sheath (40) when the cup (30) is in the fully deployed position and / or the fully retracted position and / or close to being in the fully deployed position and / or the fully retracted position, the rotational locking means comprising a plurality of stops (62, 70, 76, 82) configured to cooperate together, at least one of the stops (62, 70, 76, 82) being located on the guide (14) and cooperating with at least one other of the stops (62, 70, 76, 82) located on the sheath (40), one of the plurality of stops (62, 70, 76, 82) being a tab (70, 76) projecting axially from a base to a free end and / or the other of the plurality of stops (62, 70, 76, 82) is a radial overthickness (62, 82) of material, characterized in that the leg (70, 76) comprises two sides extending between the base and the free end, one of the sides (72,78) of the leg (70, 76) being vertical and cooperating with one vertical side (66, 84) of the radial overthickness (62, 82) of material, the other of the sides (74, 80) of the leg (70, 76) being inclined and cooperating with an inclined side (68, 86) of the radial overthickness (62, 82) of material. Device (10) according to the preceding claim, wherein the guide (14), the cup (30) and the sheath (40) are made of plastic material. Device (10) according to the preceding claim, wherein the plastic material is polypropylene. Device (10) according to any one of the preceding claims, wherein the device (10) has an upper portion (56) located towards an opening (60) of the device (10) through which the cosmetic product exits and an opposite lower portion (58), the rotation blocking means is located at the level of the upper portion (56) of the device (10) and / or at the level of the lower portion (58) of the device (10).

5. Device (10) according to any one of the preceding claims, wherein at least one stop (62, 76) of the guide (14) and at least one stop (70, 82) of the sheath (40) are of complementary shape so as to cooperate together.

6. Device (10) according to any one of the preceding claims, wherein the cup (30) comprises at least one lug (32) projecting radially outwards and cooperating with at least one slide (22, 24) of the guide (14), the at least one slide (22, 24) and the at least one lug (32) being configured to serve as a means of rotationally locking the cup (30) relative to the guide (14) when the cup (30) is in the fully deployed position and / or the fully retracted position and / or close to being in the fully deployed position and / or the fully retracted position.

7. Device (10) according to the preceding claim, wherein at least one lug (32) has two parallel flats (90) configured to cooperate with walls (92) of at least one helical groove (42, 44) of the sheath (40).

8. Device (10) according to the preceding claim, wherein the flats (90) have an inclination similar to an inclination of a trajectory of the helical grooves (42, 44) of the sheath (40).

9. 9. A cosmetic product application receptacle comprising a cap, an actuation base comprising a device 10) according to any one of the preceding claims, the actuation base enabling the device (10) to be actuated so as to allow the entry and / or exit of the cosmetic product.

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