COSMETIC PRODUCT STICK APPLICATION DEVICE

Abstract

The invention provides a device (10) for applying a cosmetic product, in particular a cosmetic product stick, said application device (10) having a main longitudinal axis (X) and comprising: - a container (14) forming a reservoir for the 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 within 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) within the container (14), - an actuating means (12) accessible to the user for causing 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 actuation means (12) and the connecting skirt (58) forming a conduit for the flow of the fluid cosmetic product from the outside to the inside of the container (14) during the filling of the container (14) with cosmetic product. Figure for the abbreviation: 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 includes, in particular, a cosmetic product in the form of a stick, such as a deodorant, lipstick, or 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 a support that can be raised and lowered is mounted. The cosmetic product is placed on the support, and under the action of the rotation of the drive screw, for example via a handwheel, the support raises or lowers, allowing the cosmetic product to be dispensed for application or to be dispensed after use.

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

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

[0005] There is therefore a need for a solution that resolves at least some of the aforementioned disadvantages while maintaining a simple application device in terms of 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 main longitudinal axis and comprising:

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

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

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

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

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

[0012] the actuation 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 actuation means and the connecting skirt facilitates the flow of the cosmetic product during container filling. This minimizes disturbances and keeps the filling flow constant, thereby optimizing manufacturing or at least reducing the risk of production slowdowns 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 a position extreme lower position towards an extreme upper position

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

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

[0018] - at least one bridge of material is inclined towards the upper opening of dis contribution of the container,

[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 line with the actuation 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 includes at least one notch increasing the cross-sectional area through which the fluid cosmetic product passes during the filling of the container with cosmetic product,

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

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

[0027] - the actuating means is axially blocked 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 ogive-shaped,

[0030] - the mobile support comprises a transverse wall provided with passage openings of the liquid cosmetic product during the filling of the container with cosmetic product.

[0031] - the movable support comprises a central skirt through which the drive screw passes,

[0032] - an internal wall of the central skirt of the movable support includes 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 outer wall of the central skirt of the movable support has a chamfer in the extension of the ogive shape of the lower end of the drive screw, when the moving support is in butt 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-like shape,

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

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

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

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

[0041] - the actuation 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 single material is polypropylene. 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, at least two examples of embodiments of the invention given by way of purely illustrative and non-limiting examples, with reference to the schematic drawings attached in which ones:

[0046] - [Fig. 1] 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. 1] with an open hood;

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

[0049] - [Fig. 4] is a perspective view of a drive screw, of a means actuation and a mobile support for the application device of the [Fig.1];

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

[0051] - [Fig.6] is a perspective view of the mobile 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 principal X axis of an application device 10 of a fluid product, and the "transverse" direction is orthogonal to the axial direction.

[0053] In the detailed description of the figures that follows, the terms "upper" and "lower" or "top" and "bottom" will be used without limitation with reference to the axial direction. The lower part of the application device 10 corresponds, here, to the part where an actuation means 12 is positioned.

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

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

[0056] The term "stick," also called a "stick" or "block," refers to a rigid, elongated object. In other words, the cosmetic product is rigid and elongated, extending along a longitudinal axis that coincides 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 of cosmetic product and extending axially from an open lower base 16 to an upper dispensing 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 mobile support 20 inside the container 14, and

[0062] - a user-accessible actuation means 12 to trigger 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 includes an axial wall 24 extending from the open lower bottom 16 to the upper dispensing opening 18 and delimiting an internal volume forming the cosmetic product reservoir.

[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 with a lower radius of curvature.

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

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

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

[0069] The hood 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 maintain the hood 34 on the container 14, the hood 34 includes 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 with a circular cross-section. The opening 42 is circular here.

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

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

[0074] The mobile support 20 includes 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 shown here in the illustrated embodiment.

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

[0077] Advantageously, the movable support 20 includes a central skirt 50, an internal wall of which includes a thread 52. The central skirt 50 passes through the transverse wall 46 and extends from it, projecting outwards towards the open bottom of the container 14. In other words, a portion of the central skirt 50 is coincident 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 out of this plane.

[0078] The drive screw 22 is located inside the container 14, specifically in the center thereof. It extends axially from the upper distribution 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 includes along 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 mobile support 20 to rise and a rotation in the opposite direction causes the mobile support 20 to descend.

[0083] The actuation 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 includes 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 actuation means 12 is accessible to the user.

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

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

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

[0088] Furthermore, the actuation 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 actuation means 12 to 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 line with 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 includes a bead 62 of material forming a shoulder and cooperating with a perimeter 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 with respect to the container 14 while allowing them a rotational movement with respect to the container 14 when a user rotates the actuating means 12.

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

[0094] The connecting skirt 58 and the drive screw 22 are linked by at least one bridge of material 64. Preferably, the number of material 64 bridges 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 perimeter 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 perimeter of the connecting skirt 58. They thus form an angle of 120° between them.

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

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

[0099] Advantageously, the connecting skirt 58 includes an inclined wall 65 which extends from the actuation means 12 in the direction of the drive screw, here up to the material bridges 64.

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

[0101] The cosmetic product can thus flow along the inclined wall 65 without risk of any part remaining 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, at least one material bridge 64 is inclined towards the upper distribution opening 18 of the container 14, thus favoring the funnel shape of the connecting skirt 58. At least one material bridge 64 is thus in line with the inclined wall 65 of the connecting skirt 58.

[0104] At least one material bridge 64 may have an inclination identical or different from the wall of the connecting skirt 58. In the embodiment illustrated here, the three material bridges 64 have an inclination 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 via the actuation means 12.

[0107] In other words, the funnel shape of the actuation means 12 and the connecting skirt 58 facilitates the flow of the cosmetic product when filling the container 14. Disturbances are thus limited and the filling flow remains constant, which optimizes manufacturing or at least limits the risk of manufacturing slowdowns 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, usually during a cooling step.

[0110] Advantageously, the movable support 20 is embedded 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 the rotation of the actuating means 12.

[0111] Advantageously, the upper edge of the connecting skirt 58 includes at least one notch 66 increasing the passage area of ​​the fluid cosmetic product during of filling 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 perimeter of the upper edge of the connecting skirt 58.

[0114] In the embodiment illustrated here, the connecting skirt 58 comprises three notches 66 regularly spaced around the perimeter of the upper edge. They thus form an angle of 120° with each other.

[0115] In the embodiment illustrated here, the material bridges 64 are connected to the upper edge of the connecting skirt 58 in a notch-free area 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 channel formed by the connecting skirt 58, notably by reducing the increased passage cross-section created by the notches 66. Thus, the material bridges 64 do not impede the flow of the cosmetic product during the filling of 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 from a single piece of material. 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 malfunction 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 ogive-shaped.

[0119] The central skirt 50 of the movable support 20 can also terminate in a chamfer 68. Preferably, when the movable support 20 is abutted against the ogive shape of the lower end 60 of the drive screw 22, the chamfer 68 is an extension of the lower end 60 of the ogive-shaped drive screw 22. In other words, when the movable support 20 is in its lowest 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 / abutted against 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 during filling with cosmetic product. The risks of slowing the flow The flow of the cosmetic product through the passage formed by the actuation means 12 and the connecting skirt 58 during the filling of the container 14 is thus prevented. The flow of the cosmetic product is therefore more laminar.

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

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

[0123] The cap 70 allows the container 14 to be closed and thus prevents 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 top by a removable lid 72. The removable lid 72 closes the container 14. Thus, when filling the container with the cosmetic product, the lid 72 seals the upper dispensing opening 18 of the container 14. The lid 72 defines an internal volume that forms a mold for the cosmetic product. The lid 72 also prevents the cosmetic product from leaking into the cap 34 during filling.

[0125] Advantageously, at least the actuation 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 composing the application device 10 are made from the same material.

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

[0129] The use of a single material, or at least similar materials, to manufacture the various components of the application device 10 is particularly advantageous for their recycling after the cosmetic product has been used. Indeed, the presence of different materials presents drawbacks during recycling, as the parts must be separated. The use of a single material allows all the components of the application device 10 to be disposed of together without having to disassemble it, thus facilitating 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 of these.

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

Claims

Demands

1. A cosmetic product application device (10), in particular a cosmetic product stick, said application device (10) having a longitudinal principal axis (X) and comprising: - a container (14) forming a cosmetic product reservoir and extending axially from an open bottom (16) to an upper dispensing opening (18) for the cosmetic product, - a movable support (20) axially within the container (14) and configured to be connected to the cosmetic product, - a drive screw (22) whose rotational movement causes axial displacement of the movable support (20) within the container (14), - an actuating means (12) accessible to the user for causing the rotational movement of the drive screw (22) and housed in the open bottom (16) of the container (14), - a connecting skirt (58) extending from the actuating means (12) to 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 actuation means (12) and the connecting skirt (58) forming a conduit for the flow of the fluid cosmetic product from the outside to the inside of the container (14) during the filling of the container (14) with cosmetic product.

2. Application device (10) according to the preceding claim, wherein the connecting skirt (58) and the drive screw (22) are linked by at least one material bridge (64), the at least one material bridge (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, wherein the actuating means (12), the connecting skirt (58) and the drive screw (22) are made of the same material and in one piece.

4. Application device (10) according to any one of the preceding claims, wherein an upper edge of the connecting skirt (58) includes at least one notch (66) increasing the passage cross-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, wherein at least one material bridge (64) is linked to the upper edge of the connecting skirt (58) in a notchless area (66).

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

7. Application device (10) according to any one of the preceding claims, 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. Application device (10) according to any one of the preceding claims, wherein the outer end (60) of the drive screw (22) is ogive-shaped.

9. Application device (10) according to any one of the preceding claims, wherein 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, wherein the movable support (20) comprises a central skirt (50) through which the drive screw (22) passes, 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) such 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, wherein an outer 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 contact 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, wherein the container (14) is cylindrical and / or the grid has a bean-like shape.

14. Application device (10) according to any one of the preceding claims, wherein the actuation means (12) has a circular cross-section and / or the container (14) has an oblong cross-section.

15. Application device (10) according to any one of the preceding claims, wherein the movable support (20) has a cross-section similar in shape to the cross-section of the container (14).

16. Application device (10) according to any one of the preceding claims, wherein the actuation means (12) is closed by a cap (70).

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

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