DEVICE FOR APPLYING A COSMETIC PRODUCT STICK

Abstract

The invention proposes an application device (10) for a cosmetic product, in particular a cosmetic product stick, said application device (10) having a longitudinal main axis (X) and comprising: - a container (14) forming a reservoir for cosmetic product and extending axially from an open lower bottom (16) towards an upper dispensing opening (18) for the cosmetic product, - a movable support (20) axially inside the container (14) and configured to be connected to the cosmetic product, - a drive screw (22) whose rotational movement causes an axial displacement of the movable support (20) inside the container (14), - an actuating means (12) accessible to the user to cause the rotational movement of the drive screw (22) and housed in the open lower bottom (16) of the container (14), - a connecting skirt (58) extending from the actuating means (12) towards a lower end (60) of the screw training (22),the connecting skirt (58) being funnel-shaped in the direction of the drive screw (22), the actuating means (12) and the connecting skirt (58) forming a conduit for the passage of the fluid cosmetic product from the outside to the inside of the container (14) when filling the container (14) with cosmetic product. Figure for the abstract: Figure 1,

Description

Title of the invention: DEVICE FOR APPLYING A COSMETIC PRODUCT STICK Technical field of the invention

[0001] The invention relates to a device for applying a cosmetic product, comprising a rotating system for raising and lowering the cosmetic product. This is in particular a cosmetic product in the form of a stick, such as a deodorant, a lipstick, a lip balm. Technical background

[0002] In a known manner, in certain cosmetic product application devices, the rotary system for raising and lowering the cosmetic product comprises a central drive screw on which is mounted a support that can rise and fall. The cosmetic product is placed on the support and under the action of the rotation of the drive screw, for example by means of a wheel, the support rises or falls allowing the cosmetic product to exit so that it can be applied or the cosmetic product to enter after use.

[0003] Generally, the cosmetic product is loaded in liquid form through the bottom of the application device, for example at the level of the wheel. A re-closable opening is then arranged in the bottom of the application device through which the product is poured hot into an internal volume of the application device which forms a mold. After cooling, the cosmetic product stick is formed inside the application device and ready for use.

[0004] During filling, the cosmetic product is poured through the drive screw and the holder. Openings are thus formed to allow the liquid cosmetic product to pass through. Not only do the openings limit the filling speed, but the passage of the cosmetic product very often causes splashing and turbulence which leads to poor filling.

[0005] There is therefore a need for a solution that can resolve at least some of the drawbacks mentioned while maintaining an application device that is simple in design and use. Summary of the invention

[0006] Thus, the invention relates to a device for applying a cosmetic product, in particular a cosmetic product stick, said application device having a longitudinal main axis and comprising:

[0007] - a container forming a reservoir for cosmetic product and extending axially from an open lower bottom to an upper product dispensing opening cosmetic,

[0008] - a support axially movable inside the container and configured to be linked to the cosmetic product,

[0009] - a drive screw whose rotational movement causes a displacement axial of the movable support inside the container,

[0010] - an actuation means accessible to the user to cause the movement rotation of the drive screw and housed in the open lower bottom of the container,

[0011] - a connecting skirt extending from the actuating means towards one end in lower part of the drive screw, the connecting skirt being funnel-shaped in the direction of the drive screw,

[0012] the actuating means and the connecting skirt forming a conduit for the passage of the fluid cosmetic product from the outside to the inside of the container when filling the container with cosmetic product.

[0013] In other words, the funnel shape of the actuating means and the connecting skirt facilitates the flow of the cosmetic product when filling the container. Disturbances are thus limited and the filling flow remains constant, which makes it possible to optimize manufacturing or at least limit the risk of slowdowns in manufacturing due to filling.

[0014] According to different embodiments of the invention, which may be taken together or separately:

[0015] - the movable support is axially movable inside the container from one position extreme lower to extreme upper position,

[0016] - the connecting skirt comprises at least one bridge of material,

[0017] - the connecting skirt and the drive screw are connected by the at least one bridge of matter,

[0018] - the at least one bridge of material is inclined towards the upper opening of dis recipient's tribute,

[0019] - the number of material bridges between the connecting skirt and the drive screw is between two and six, preferably between three and five,

[0020] - the connecting skirt comprises an inclined wall,

[0021] - the connecting skirt is in the extension of the actuating means,

[0022] - the actuating means, the connecting skirt and the drive screw came from material and in one piece,

[0023] - the actuating means, the connecting skirt and the drive screw are one piece monolithic,

[0024] - an upper edge of the connecting skirt comprises at least one notch increasing the passage section of the fluid cosmetic product when filling the container with cosmetic product,

[0025] - the at least one bridge of material is bonded to the upper edge of the connecting skirt in an area without a notch,

[0026] - the connecting skirt and the drive screw are connected by at least two bridges of material, the at least two bridges of material are linked to the upper edge of the connecting skirt between two adjacent notches,

[0027] - the actuating means is axially locked in the open lower bottom of the container and free to rotate relative to it,

[0028] - the actuating means is clipped into the open lower bottom of the container,

[0029] - the outer end of the drive screw is warp-shaped,

[0030] - the mobile support comprises a transverse wall provided with passage openings of the fluid cosmetic product when filling the container with cosmetic product,

[0031] - the mobile support comprises a central skirt crossed by the drive screw,

[0032] - an internal wall of the central skirt of the movable support comprises a thread cooperating with a thread of the drive screw so that the rotational movement of the drive screw causes the axial displacement of the movable support inside the container,

[0033] - an external wall of the central skirt of the mobile support has a chamfer in the extension of the ogive shape of the lower end of the drive screw, when the movable support is in abutment with the ogive shape of the lower end of the drive screw,

[0034] - the transverse wall of the movable support is a grid,

[0035] - the container is cylindrical,

[0036] - the grid has a bean shape,

[0037] - the grid has a concave side and an opposite convex side,

[0038] - the actuating means has a circular cross-section,

[0039] - the container has an oblong cross-section,

[0040] - the movable support has a cross-section of a shape similar to the section transverse of the container,

[0041] - the actuating means is closed by a cap,

[0042] - the application device is made of a single material,

[0043] - the monomaterial is a thermoplastic polymer,

[0044] - the monomaterial is polypropylene. Brief description of the figures

[0045] The invention will be better understood, and other characteristics and advantages thereof will appear during the reading of the detailed description which follows, of at least two examples of embodiment of the invention given as purely illustrative and non-limiting examples, with reference to the schematic drawings annexed in which:

[0046] - [Fig.l] is an exploded perspective view of an application device according to the invention;

[0047] - [Fig.2] is a perspective view of the application device of [Fig.l] with an open hood;

[0048] - [Fig.3] is a sectional view of a lower portion of the application device of [Fig.l];

[0049] - [Fig.4] is a perspective view of a drive screw, a means actuation and a movable support of the application device of [Fig.l];

[0050] - [Fig.5] is a perspective view of the drive screw and the means actuation of [Fig.4];

[0051] - [Fig.6] is a perspective view of the movable support of [Fig.4]. Detailed description of the invention

[0052] By convention, the “axial” or “longitudinal” direction corresponds in the figures to that of the main X axis of a device 10 for applying a fluid product, and the “transverse” direction is orthogonal to the axial direction.

[0053] In the detailed description of the figures which follows, the terms “upper” and “lower” or “top” and “bottom” will be used in a non-limiting manner with reference to the axial direction. The lower part of the application device 10 corresponds, here, to that where an actuating means 12 is positioned.

[0054] Similarly, the terms "external or outer" and "internal or inner" are used with reference to the transverse direction, an external element being radially further from the X axis than an internal element.

[0055] Figures 1 to 6 illustrate an example of a device 10 for applying a cosmetic product, in particular a cosmetic product stick, and having a longitudinal main axis X.

[0056] The term “stick”, also called stick or bread, means a rigid object of elongated shape. In other words, the cosmetic product is in rigid form and of elongated shape, that is to say extending along a longitudinal axis coincident with the main longitudinal axis X of the application device 10.

[0057] The cosmetic product may be, for example, a deodorant, a lipstick, a lip balm.

[0058] The application device 10 comprises:

[0059] - a container 14 forming a reservoir for cosmetic product and extending axially from an open lower bottom 16 to an upper distribution opening 18 of the cosmetic product,

[0060] - a movable support 20 axially inside the container 14 and configured to be related to the cosmetic product,

[0061] - a drive screw 22 whose rotational movement causes a displacement axial of the movable support 20 inside the container 14, and

[0062] - an actuating means 12 accessible to the user to cause the rotational movement of the drive screw 22 and housed in the open lower bottom 16 of the container 14.

[0063] Preferably, the container 14 is cylindrical.

[0064] The container 14 comprises an axial wall 24 extending from the open lower bottom 16 towards the upper dispensing opening 18 and delimiting an interior volume forming the reservoir for the cosmetic product.

[0065] The container 14 here has an oblong cross-section, in particular in the shape of a bean. Thus, the cross-section comprises a concave side 26 and an opposite convex side 28 connected by convex lateral sides 30, 32 of smaller radius of curvature.

[0066] The upper dispensing opening 18 of the container 14 has a shape similar to the cross-section of the container 14. In other words, the upper dispensing opening 18 is in the extension of the axial wall 24.

[0067] An upper end portion of the axial wall 24 adjacent to the upper dispensing opening 18 has a reduced thickness so as to receive a cover 34 for closing the container 14.

[0068] The cover 34 comprises an axial wall extending from a lower edge towards a transverse wall and here has a cross-section of a shape similar to the cross-section of the container 14.

[0069] The cover 34 is configured to fit onto the upper end portion of the container 14 so as to close the application device 10.

[0070] To axially hold the cover 34 on the container 14, the cover 34 comprises at least one annular groove 36 cooperating with at least one rib 38 of the container 14. The ribs 38 are here three in number and are located on the convex side 28 and on the two convex lateral sides 30, 32.

[0071] The open lower bottom 16 of the container 14 is a transverse wall 40 comprising an opening 42. The opening 42 is lower than the transverse wall 40 so as to form a cavity 44 of circular cross-section. The opening 42 is circular here.

[0072] The movable support 20 is configured to move inside the container 14 from the open lower bottom 16 to the upper dispensing opening 18 as the cosmetic product is consumed.

[0073] Preferably, the movable support 20 moves from a lower extreme position located close to the open bottom of the container 14 to an upper extreme position located near the upper distribution opening 18.

[0074] The mobile support 20 comprises a transverse wall 46 provided with openings 48 for the passage of the fluid cosmetic product when filling the container 14 with cosmetic product.

[0075] Thus, advantageously the transverse wall 46 of the mobile support 20 can be a grid as here in the illustrated embodiment.

[0076] Advantageously, the movable support 20 has a cross-section of a shape similar to the cross-section of the container 14. The grid therefore has a bean shape with a concave side and an opposite convex side.

[0077] Advantageously, the movable support 20 comprises a central skirt 50, an internal wall of which comprises a thread 52. The central skirt 50 passes through the transverse wall 46 and extends from the latter, projecting towards the open bottom of the container 14. In other words, a portion of the central skirt 50 coincides with the transverse wall 46 of the movable support 20, i.e. in the plane of the transverse wall 46 of the movable support 20, and a portion extends outside this plane.

[0078] The drive screw 22 is located inside the container 14, in particular in the center thereof. It extends axially from the upper dispensing opening 18 towards the open bottom of the container 14.

[0079] Advantageously, the drive screw 22 passes through the movable support 20, here through the central skirt 50 of the movable support 20.

[0080] The drive screw 22 comprises over its entire length an external thread 54 cooperating with the thread 52 of the internal wall of the central skirt 50 of the movable support 20.

[0081] Thus, a rotational movement of the drive screw 22 along the main longitudinal axis X causes the axial displacement of the movable support 20 inside the container 14.

[0082] A rotation in one direction causes the movable support 20 to rise and a rotation in the opposite direction causes the movable support 20 to descend.

[0083] The actuating means 12 is here in the form of a circular wheel. This is housed in the open lower bottom 16 of the container 14, in particular in the cavity 44 formed in the open lower bottom 16 of the container 14.

[0084] The axial wall 24 of the container 14 further comprises on the concave side 26 and on the opposite convex side 28 rectangular notches 56 at the level of the open lower bottom 16 so that the actuating means 12 is accessible to the user.

[0085] The actuating means 12 is connected to the drive screw 22. In this way, when the user exerts a rotational movement on the actuating means 12, this is transmitted to the drive screw 22 which also performs a rotational movement causing the axial displacement of the movable support 20 to inside the container 14.

[0086] In particular, advantageously, the actuating means 12 is axially locked in the open lower bottom 16 of the container 14 and free to rotate relative to the latter.

[0087] For example, as in the embodiment illustrated here, the actuating means 12 is clipped into the open lower bottom 16 of the container 14.

[0088] Furthermore, the actuating means 12 is a hollow part through which the cosmetic product can flow when filling the container 14.

[0089] According to the invention, the application device 10 further comprises a connecting skirt 58 extending from the actuating means 12 towards a lower end 60 of the drive screw 22.

[0090] The connecting skirt 58 allows the connection between the actuating means 12 and the screw drive 22. Thus, a rotational movement of the actuating means 12 also causes a rotational movement of the drive screw 22 and the axial displacement of the movable support 20 inside the container 14.

[0091] Advantageously, the connecting skirt 58 is in the extension of the actuating means 12 and extends from the actuating means 12 towards an upper edge in the direction of the drive screw 22.

[0092] Advantageously, the connecting skirt 58 comprises a bead 62 of material forming a shoulder and cooperating with a periphery of the opening 42 of the open lower bottom 16 of the container 14 so as to axially block the actuating means 12 and the drive screw 22 relative to the container 14 while allowing them a rotational movement relative to the container 14 when a user rotates the actuating means 12.

[0093] Preferably, the connecting skirt 58 comprises at least one material bridge 64.

[0094] The connecting skirt 58 and the drive screw 22 are connected by the at least one bridge of material 64. Preferably, the number of bridges of material 64 between the connecting skirt 58 and the drive screw 22 is between two and six, even more preferably, between three and five.

[0095] Preferably, the material bridges 64 are regularly distributed around the periphery of the connecting skirt 58.

[0096] In the embodiment illustrated here, the material bridges 64 are of the order of three and are regularly distributed around the periphery of the connecting skirt 58. They thus form an angle of 120° between them.

[0097] Still according to the invention, the connecting skirt 58 is funnel-shaped in the direction of the drive screw 22.

[0098] The actuating means 12 and the connecting skirt 58 thus form a conduit for the passage of the fluid cosmetic product from the outside to the inside of the container 14 during filling the container 14 with cosmetic product.

[0099] Advantageously, the connecting skirt 58 comprises an inclined wall 65 which extends from the actuating means 12 in the direction of the drive screw, here as far as the material bridges 64.

[0100] The inclination is measured relative to the main longitudinal axis X.

[0101] The cosmetic product can thus flow along the inclined wall 65 without risking that a part remains blocked.

[0102] Advantageously, the inclined wall 65 does not have any horizontal portion, i.e. orthogonal to the main longitudinal axis X. Such a portion would risk slowing down the flow of the cosmetic product or creating a zone of turbulence and splashing.

[0103] Advantageously, the at least one bridge of material 64 is inclined towards the upper dispensing opening 18 of the container 14, thus promoting the funnel shape of the connecting skirt 58. The at least one bridge of material 64 is thus in the extension of the inclined wall 65 of the connecting skirt 58.

[0104] The at least one material bridge 64 may have an inclination that is identical to or different from the wall of the connecting skirt 58. In the embodiment illustrated here, the three material bridges 64 have an inclination that is less than the inclination of the inclined wall 65 of the connecting skirt 58.

[0105] Indeed, in this type of cosmetic product application device 10, the cosmetic product is introduced into the container 14 in liquid form, preferably through an opening located in the bottom of the container 14.

[0106] Thus, here, the cosmetic product is introduced into the container 14 through the opening 44 of the open lower bottom 16 of the container 14 through the actuating means 12.

[0107] In other words, the funnel shape of the actuating means 12 and of the connecting skirt 58 makes it possible to facilitate the flow of the cosmetic product when filling the container 14. Disturbances are thus limited and the filling flow remains constant, which makes it possible to optimize manufacturing or at least limit the risk of slowdowns in manufacturing due to filling.

[0108] The funnel shape also makes it easier to insert the connecting skirt 58 into the cavity 44 and into the opening 42 in which it is clipped.

[0109] The cosmetic product is then hardened, generally during a cooling step thereof.

[0110] Advantageously, the movable support 20 is taken in the hardened material of the cosmetic product and becomes integral with it. The cosmetic product can thus move axially with the movable support 20 during rotation of the actuating means 12.

[0111] Advantageously, the upper edge of the connecting skirt 58 comprises at least one notch 66 increasing the passage section of the fluid cosmetic product during filling the container 14 with cosmetic product.

[0112] Preferably, the number of notches 66 is between two and six, even more preferably, between three and five.

[0113] Preferably, the notches 66 are regularly distributed around the periphery of the upper edge of the connecting skirt 58.

[0114] In the embodiment illustrated here, the connecting skirt 58 comprises three notches 66 regularly distributed around the periphery of the upper edge. They thus form an angle of 120° between them.

[0115] In the embodiment illustrated here, the material bridges 64 are connected to the upper edge of the connecting skirt 58 in an area without a notch 66. In particular, the material bridges 64 are connected to the upper edge of the connecting skirt 58 between two adjacent notches 66. In this way, the material bridges 64 do not obstruct the passage conduit formed by the connecting skirt 58, in particular by reducing the passage section increased by the notches 66. Thus, the material bridges 64 do not compromise the passage of the cosmetic product when filling the container 14, thereby improving the flow of the cosmetic product for faster filling.

[0116] Preferably, the actuating means 12, the connecting skirt 58 and the drive screw 22 are made in one piece. In other words, the actuating means 12, the connecting skirt 58 and the drive screw 22 are a monolithic piece.

[0117] Additional assembly steps are thus avoided, facilitating the design of the application device 10. Furthermore, this also limits the risk of poor assembly and / or fragility during use which would lead to poor operation of the application device 10.

[0118] To facilitate the passage of the cosmetic product when filling the container 14, the external end, also called the lower end 60, of the drive screw 22 is in the shape of an ogive.

[0119] The central skirt 50 of the movable support 20 may also end with a chamfer 68. Preferably, when the movable support 20 is in abutment with the ogive shape of the lower end 60 of the drive screw 22, the chamfer 68 is in the extension of the lower end 60 of the ogive-shaped drive screw 22. In other words, when the movable support 20 is in the lower extreme position, here in a position in which the central skirt 50 of the movable support 20, more precisely the chamfer 68 of the central skirt 50 of the movable support 20, is in contact / in abutment with the lower end 60 of the ogive-shaped drive screw 22, the chamfer 68 and the ogive shape form a cone.

[0120] Such a shape prevents the cosmetic product from splashing and limits turbulence when filling with cosmetic product. The risks of slowing down the passage of the cosmetic product through the passage conduit formed by the actuating means 12 and the connecting skirt 58 during the filling of the container 14 are thus avoided. The flow of the cosmetic product is thus more laminar.

[0121] Advantageously, the actuating means 12 is closed by a cap 70.

[0122] The cap 70 allows, after removal, access to the filling zone, in particular to the passage conduit.

[0123] The cap 70 makes it possible to close the container 14 and thus avoid deterioration and / or contamination of the cosmetic product, for example during its use.

[0124] Before use, the cosmetic product can also be protected at the upper level by a removable cover 72. The removable cover 72 closes the container 14 in particular. Thus, when filling the latter with cosmetic product, the cover 72 makes it possible to close the upper dispensing opening 18 of the container 14. The cover 72 makes it possible to delimit an internal volume forming a mold for the cosmetic product. The cover 72 also makes it possible to prevent the cosmetic product from flowing into the cap 34 during filling.

[0125] Advantageously, at least the actuating means 12, the connecting skirt 58 and the drive screw 22 are made of a single material.

[0126] Preferably, the application device 10 is made of a single material.

[0127] In other words, all the elements making up the application device 10 are made of the same material.

[0128] Monomaterial means a design of one or more elements from a single material.

[0129] The use of a single material, or at least similar materials, to produce the different elements making up the application device 10 is particularly advantageous for their recycling after use of the cosmetic product. Indeed, the presence of different materials presents disadvantages during recycling where the parts must be separated. The use of a single material makes it possible to throw away all the elements making up the application device 10 together without having to disassemble it, which facilitates recycling.

[0130] The monomaterial is a thermoplastic polymer. It may be, for example, polypropylene (PP), polyethylene terephthalate (PET), a post-consumer recycled (PCR) material, in particular post-consumer recycled polypropylene and / or a similar material, and / or a mixture thereof.

[0131] Polypropylene is a plastic material whose recycling cycle is well known.

Claims

Claims

1. Application device (10) for a cosmetic product, in particular a cosmetic product stick, said application device (10) having a longitudinal main axis (X) and comprising: - a container (14) forming a reservoir for cosmetic product and extending axially from an open lower bottom (16) to an upper dispensing opening (18) for the cosmetic product, - a movable support (20) axially inside the container (14) and configured to be connected to the cosmetic product, - a drive screw (22) whose rotational movement causes an axial displacement of the movable support (20) inside the container (14), - an actuating means (12) accessible to the user to cause the rotational movement of the drive screw (22) and housed in the open lower bottom (16) of the container (14), - a connecting skirt (58) extending from the actuating means (12) to a lower end (60) of the drive screw (22),the connecting skirt (58) being funnel-shaped in the direction of the drive screw (22), the actuating means (12) and the connecting skirt (58) forming a conduit for the passage of the fluid cosmetic product from the outside to the inside of the container (14) when filling the container (14) with cosmetic product.,

2. Application device (10) according to the preceding claim, in which the connecting skirt (58) and the drive screw (22) are connected by at least one bridge of material (64), the at least one bridge of material (64) being inclined towards the upper dispensing opening (18) of the container (14).

3. Application device (10) according to any one of the preceding claims, in which the actuating means (12), the connecting skirt (58) and the drive screw (22) are made in one piece.

4. Application device (10) according to any one of the preceding claims, in which an upper edge of the connecting skirt (58) comprises at least one notch (66) increasing the passage section of the fluid cosmetic product when filling the container (14) with cosmetic product.

5. Application device (10) according to the preceding claim taken in combination with claim 2, in which the at least one bridge of material (64) is bonded to the upper edge of the bonding skirt (58) in a zone without a notch (66).

6. Application device (10) according to the preceding claim, in which the connecting skirt (58) and the drive screw (22) are connected by at least two bridges of material (64), the at least two bridges of material (64) are connected to the upper edge of the connecting skirt (58) between two adjacent notches (66).

7. An application device (10) according to any preceding claim, wherein the actuating means (12) is axially locked in the open lower bottom (16) of the container (14) and free to rotate relative thereto.

8. An application device (10) according to any preceding claim, wherein the outer end (60) of the drive screw (22) is bullet-shaped.

9. Application device (10) according to any one of the preceding claims, in which the movable support (20) comprises a transverse wall (46) provided with openings (48) for the passage of the fluid cosmetic product when filling the container (14) with cosmetic product.

10. Application device (10) according to any one of the preceding claims, in which the movable support (20) comprises a central skirt (50) traversed by the drive screw (22), an internal wall of the central skirt (50) of the movable support (20) comprising a thread (52) cooperating with a thread (54) of the drive screw (22) so that the rotational movement of the drive screw (22) causes the axial displacement of the movable support (20) inside the container (14).

11. Application device (10) according to the preceding claim taken in combination with claim 8, in which an external wall of the central skirt (50) of the movable support (20) has a chamfer (68) in the extension of the ogive shape of the lower end of the drive screw (22), when the movable support (20) is in abutment with the ogive shape of the lower end (60) of the drive screw (22).

12. Application device (10) according to claim 9, wherein the transverse wall (46) of the movable support (20) is a grid.

13. Application device (10) according to the preceding claim, in which the container (14) is cylindrical and / or the grid has a bean shape.

14. An application device (10) according to any preceding claim, wherein the actuating means (12) has a circular cross-section and / or the container (14) has an oblong cross-section.

15. An application device (10) according to any preceding claim, wherein the movable support (20) has a cross-section of a shape similar to the cross-section of the container (14).

16. An application device (10) according to any preceding claim, wherein the actuating means (12) is closed by a cap (70).

17. Application device (10) according to any one of the preceding claims, made of monomaterial, the monomaterial being polypropylene.

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