MXPA98008004A - Lipstick holder and lipstick case comprising same - Google Patents

Abstract

The invention concerns a lipstick holder (30) for supporting a stick of a solid product subject to crumbling designed for being mounted sliding in a case, comprising an axis (X) cylindrical wall (20) and constituting a stick supporting skirt (20) for maintaining the stick base;a transverse bottom (22);and means for retaining (M) the stick, at least a slot (29) being provided in the cylindrical wall (20). The invention is characterised in that said slot (29) extends to the bottom and is delimited by two side edges linked by an upper edge opposite the bottom, said opening constituting means for retaining (M) the stick (40). The invention also concerns a case for lipstick provided with such a lipstick holder.

Description

SUPPORT DB BARBA DS LIPS AND CASE FOR LIPSTICK COMPRISING THE SAME The present invention relates to a lipstick support for supporting a lipstick of solid, disintegrable product and intended to be slidably mounted in a case , as well as to a product case comprising such support. This product bar is, for example, a colorless or colorless lipstick, or any type of bar, for example a dermatological bar. The known lipsticks give full satisfaction for as long as the user takes the precaution of keeping them in such a way that the tip of the lipstick, in the storage position, is directed upwards. In practice, for example, when these bars are stored in the user's handbag, it is practically impossible to respect this precaution. This results, particularly because of impacts and agitations, that the lipstick tends to leave the support. It should be noted, on the other hand, that this effect is even more pronounced, when the lipstick is subjected to temperature variations. Indeed, when certain types of lipsticks are exposed to a temperature of 30 ° C, the expansion of their diameter can reach from 0.6 to 0.7 mm in relation to their diameter REP. : 28461 normal at room temperature. It follows that, after a drop in temperature, embrittlement is created at the base of the lipstick. Also the maintenance of the lipstick in a classic support is a little illusory, since it runs the risk of dissociating from it later by the minimum impact. It is known, for example, from document FR-A-2 548 880, a lipstick case comprising a support provided, on the opposite side to its bottom, with elastic legs for engaging the lipstick against detachments. These legs are supported against an inner wall of the casing of the case. However, this support has the disadvantage that, during its sliding in the case, its legs suffer vibrations, due to imperfections of this internal wall of the case. The vibration of the legs then causes a deformation of the base of the lipstick that is in contact with these legs. Subsequently, the maintenance of the lipstick on the support is no longer ensured, and the lipstick runs the risk of detaching from the support at the least impact. On the other hand, the deformation of the base of the lipstick also occurs during the assembly of the cup / lipstick assembly in the case. This phenomenon is all the more pronounced when the composition of the lipstick is of a paste-like consistency. It is also known, from document FR-A-909 021, a lipstick case provided with a support whose side wall comprises a groove extending over the entire height of the support. Although the presence of this slit improves the qualities of the sliding of the support in the case, this slit causes a weakening of the maintenance of the lipstick in the support. A first object of the present invention is therefore to propose a product rod support for lips that ensures, in all positions of the bar and at variable temperatures, a convenient retention of the lipstick on its support. Another object of the invention is to propose a simple and inexpensive implementation support, which also allows an easy industrial positioning of the lipstick on the support, and this regardless of the composition of the lipstick. The third object finally consists of proposing a support that has a diameter greater than that of the lipstick, which allows to avoid any risk of breakage of the lipstick at the level of the base, after the assembly of the lipstick on the support. Also in the first object of the invention relates to a lipstick holder suitable for supporting a lipstick of disintegrable solid product and intended to be slidably mounted in a case, comprising a substantially cylindrical wall provided with an axis of symmetry and which constitutes a maintenance skirt of the lipstick, intended to maintain the base of the lipstick; a transverse background; and means for retaining the lipstick, at least one opening that is made in the cylindrical wall, this opening extending to the bottom and being delimited by two side edges joined by an upper edge opposite the bottom, this opening constituting the means of retaining the lipstick. This opening also constitutes a means of evacuating a surplus of product, displaced by the retaining means and / or by the internal wall during the positioning of the lipstick on the support. By the term "substantially cylindrical wall" is meant any cylindrical wall in the proper sense of the term, or a slightly truncated wall on its inner face, enlarged on its free edge, opposite the bottom. On the other hand, this free edge can be cut to the bias, depending on the shape of the case intended to contain this support. If necessary, the bottom of the support can be set.

Generally, the support has a circular, oval or prismatic section. More often, the cylindrical shape is preferred. Advantageously, the cylindrical wall is extended beyond the transverse bottom by a cylindrical guide skirt connected to the bottom of the alignment of the cylindrical wall, this skirt secured by a smooth sliding of the support when it is mounted in a lipstick case. According to a particular embodiment of the invention, the opening made in the cylindrical wall is a longitudinal groove of orientation parallel to the axis of the support. It is possible, however, to make an opening of rectangular shape or in arc of a circle. This opening can, if necessary, also pass through a part of the bottom of the support. Advantageously, a plurality of openings (or slits) distributed regularly over the periphery of the cylindrical wall are provided. Thus, the openings (or slits) traverse the entire height of the guide skirt defining a plurality of tabs. Advantageously, the free ends of the tongues have a diameter slightly greater than the diameter of the cylindrical wall. Thus, these tongues can carry, for example, an external centering projection. In this way, the tongues permanently ensure a flexible contact with the wall of a case cover, which guarantees a smooth and play-free sliding of the support in the case, which plays the role of shock absorber. Particularly, at the time of assembly, transport or manipulation of a lip kit, this cushioning effect diminishes or avoids the risks of breakage of the base of the lipstick. Due to the arrangement of the grooves and tabs, respectively, which have just been described, the cylindrical wall, on the side opposite the bottom, has a continuous edge. Advantageously, an anchoring means, suitable for entering the base of the lipstick, is associated with each hole- (or slit). According to a first variation of embodiment, each orifice (or slit) made in the cylindrical wall is surrounded by an extra thickness called "molding". Advantageously, each molding has a rounded edge in the vicinity of the internal wall of the maintenance skirt. On the side of the slit, the molding forms an angle of approximately 90 ° with the internal cylindrical wall. Advantageously, the extra thickness of each molding is of the order of 0.1 to 5 mm. By the arrangement of these moldings, it is still possible to reinforce the maintenance of the lipstick on the support. In an area joining the cylindrical wall, the moldings have a rounded edge that facilitates the industrial positioning of the lipstick on the support. This positioning of the lipstick is advantageously carried out at a temperature below room temperature, for example at 10 ° C. At this temperature, the lipstick has a diameter that is less than a few tenths of a millimeter in diameter at room temperature, and a few tenths of a millimeter less than the internal diameter of the support. At the time of return to room temperature, the lipstick expands and remains "anchored" in the slits and / or moldings. During this dilation, a part of the constituent material of the lipstick moves and penetrates the orifices, thus ensuring the maintenance of the lipstick on the support. The lipstick, thus placed on the support, clearly resists falls and agitations better than a lipstick on a classic support, both at high temperatures and cold. According to another variant, it is also possible to arrange a molding appropriately between the slits. According to another variant embodiment, the anchoring means is an elastically flexible piece, capable of bending towards the outside, during placement; of the lipstick and to sink into the base of it. Advantageously, this piece is located to the right of an orifice, on the internal surface of the side wall of the support or in the thickness thereof. This part can have a fin, for example of triangular or trapezoidal shape, a part of one of the sides of the fin being contiguous with an internal face of the cylindrical wall, this fin oriented according to a plane passing through the axis of the support. Advantageously, the shape of the fin is chosen to facilitate the introduction of the base of the lipstick into the support. In general, the moldings or the fins can be arranged on a variable height of the internal side wall of the support. If necessary, the support comprises two protruding pins on the outside, these pins being designed to control the movement of the support, when it is mounted in a case. A second object of the present invention relates to a case for a product for lips comprising a lipstick, whose base is placed on a support such as that described above. This support is of the type of two pins that project radially outwardly and that, on the one hand, each pass through an opening, these openings being made in the side wall of a cover in which the support moves substantially in axial direction , and on the other hand, they are each coupled in a helical groove made in the internal wall of an externally duplicated cylindrical sheath of a sheath, the sheath being mounted movably in relation to the sheath and axially retained. The axial distance separating the pins from the edge of the support, on the one hand, and the axial position of the ends of the opening and / or the grooves respectively on the sheath and / or the covering, on the other hand, are such that when The lipstick is in its maximum exit position, the edge of the support is not outside the sheath. In order to better understand the present invention, several support embodiments according to the invention, represented in the attached drawings, will now be described as purely illustrative and in no way limiting examples. Figure 1 shows an axial section of a lipstick case, provided with a support according to the invention.

Figure 2 represents an orderly exploded view of the components of the case of Figure 1, the lipstick being not represented for the purpose of simplification. Figure 3 is an enlarged perspective view of the support of Figure 1. Figure 4 is a perspective view of a variant embodiment of the support according to the invention. Figure 5 is a section according to the plane P of figure 4 - Figure 6 is an enlarged partial perspective view of figure 5, in axial section. Figure 7 is a perspective view of another support variant according to the invention. Figure 8 is a section according to the plane P of figure 7. Figure 9 is an enlarged partial perspective view of figure 7 illustrating a variant of the means for hooking the lipstick. Figure 10 is an enlarged partial perspective view of a variant embodiment of the hooking means of Figure 9. Figure 11 is an axial sectional view of a preferred embodiment of a red lip kit. Figure 12 shows a perspective view of the cover 8 of figure 11. Figure 13 shows a perspective view with partial separation of a lipstick of lipstick on a support of figure 11. With reference to the figures 1 to 3, there is a product box for lips having a longitudinal axis X, comprising an outer protection shell, for example metal, of cylindrical shape, circular section, one of whose edges is recessed in rounded collar 2 towards the X axis. It delimits a central circular passage 3. Inside the wrapping 1, a 4-cylindrical liner of circular section, of small thickness, made of plastic material, is fixed. It has a height smaller than the casing 1, so that it forms, on the side of the collar 2, an annular chamber 5, delimited by this collar and by a first end 4a of the casing 4. On the side opposite to the collar 2, a The annular recess 6 is delimited between the casing 1 and a second end 4b of the casing 4. On the internal face of the casing 4, two identical but diametrically opposed helical grooves 7 are made. In the assembly constructed by the casing 1 and the casing 4 a casing 8 is mounted, made of rigid plastic material, free in rotation around the X axis, but fixed in the axial position. The sheath 8 comprises a median cylindrical tubular part 9, of external diameter slightly smaller than the internal diameter of the sheath 4. At its ends, this sheath respectively comprises a retention cord 10 and a maneuver protection 15. Two identical longitudinal openings 11, diametrically opposite, extend axially over practically the entire height of the tubular part 9. Each opening comprises two ends that are respectively terminated by a lateral notch 12 and 13. With respect to the opening 11, the notch 12 located at a first end of the opening 11 is oriented opposite to the notch 13 located on the second end of the opening 11. At its end, in front of the drop 6, the tubular part 9 is connected by means of an external radial projection 14 to a projection of Cylindrical maneuver 15, whose internal diameter is equal to the internal diameter of the tubular part 9, and whose outer diameter is pr equal to the diameter of the casing 1. At its free end virtually, the projection 15 has an inner radial flange 16.

While the tubular part 9 is disposed in the liner 4, the annular retaining bead 10 (Figure 1) is abutting against the end 4b of the liner 4, and is engaged in the chamber 5, ensuring axial maintenance of the sheath in the lining 4. In the same way, the external radial projection 14 is housed in the annular gap 6, so that the liner 4 remains as in a sandwich axially between the cord 10 and the projection 14. Thus, the sheath can be rotatably engaged within the sheath 4 by maneuvering the maneuvering projection 15. According to the invention, a support 30, generally cylindrical in shape, is mounted on the sheath 8. This support 30 has a cylindrical wall 20 and a skirt. of cylindrical guide 21, separated from one another by a bottom 22. The cylindrical wall 20 has on its external lateral wall two pins 24 projecting outwards. Each pin has a dimension such that it can pass through an opening 11 in the cover 8 and be coupled in a groove 7 in the cover 4. In the cylindrical wall 20, longitudinal grooves 29 parallel to the X axis have been practiced, substantially at half height. they open in the direction of the bottom 22 and cross the entire height of the wall of the guide skirt 21. Thus, a plurality of elongated openings 29a are defined in the cylindrical wall 20, serving as an anchoring means, during the positioning of the Lipstick 40. As for the guide skirt 21, the slits 29 define tongues 23. Thanks to the material constituting the support 30, for example in polyacetal, in polystyrene or in polypropylene, these tongues 23 then have sufficient elasticity to guide the support, flexibly, during its axial stroke in the cover 8-. Advantageously, the projections 21a are provided on the external face of each tab 23, intended to suppress an eventual clearance between the support 30 and the cover 8. It is understood that, when the cover is put into rotation in relation to the cover 4 and the wrapping 1 around its longitudinal axis X, thanks to the guide of the pins 24 in the openings 11 and the grooves 7, the support 30 moves axially in the tubular part 9 of the cover 8. The rotation of the cover causes a translation of the support in the helical grooves 7 of the liner 4 between two end positions, one of which is the entrance position of the lipstick, shown in FIG. 1. In this position of entry of the support 30, the guide skirt 21 is housed inside the projection 15, near the internal collar 16. Figures 4 to 6 illustrate a variant embodiment of the support of figure 3. The constituent parts of this support that are identical To those of Figure 3 or play an analogous role, they bear the same reference numbers increased by 100. The description of these parts will only be partially repeated. In a manner analogous to the embodiment of FIG. 3, the support 130 of FIG. 4 has a substantially cylindrical shape. The cylindrical wall 120 and the guide skirt 121 comprise slits 129 that open substantially from half height of the cylindrical wall 120 to the free end 121b of the guide skirt 121. Thus, a plurality of elongated openings 129a are formed in the part bottom of the cylindrical wall 120. Each opening 129a, on the inner face of the cylindrical wall 120, is surrounded by a reinforcing or "molding" area of excess thickness 150. This over thickness 150 is of the order of 0.6 mm. The outer edge 151 of the thickness 150 is rounded to facilitate the positioning of the lipstick on the support 130, as seen in Figure 5 which represents a cross section following the plane P of Figure 4. On the side of the slit 129 , the opening 129a forms with the cylindrical wall a living angle?, substantially equal to 90 °, as shown in figure 6. The moldings 150 form an excellent anchoring means for a lipstick of semi-solid consistency, which ensures the maintenance of the lipstick, especially at elevated temperatures, around 30 ° C. Figures 7 to 9 illustrate another variant of support 230. The constituent parts of this support which are identical to those of Figure 3 or play an analogous role, bear the same increased reference numbers of 200. The description of these parts is only will repeat partially. The support 230 differs from the support 30 of FIG. 1 in that the cylindrical wall 220 comprises a plurality of internal engagement fins 250. These fins 250 have a rectangular triangular shape and extend radially towards the interior of the support. They are hooked to the cylindrical wall 220 at a level below the top 251 of each slot 229, so that an acute angle a between the skirt 220 and the hypotenuse of the triangle is defined. Typically, angle a is between 20 ° and 45 °. on a part only of its length, the side adjacent to the angle a is integral with the cylindrical wall 220. This construction makes it possible to obtain an elastically mobile arrangement of the fins 250. It is understood that, at the time of assembly of the lipstick in the support, the fins 250 can be bent radially outwards in the space left for the slots 229. After the lipstick is placed, the fins enter the base of the lipstick by elasticity. Ensuring the maintenance and anchoring of it in the support. As for the bottom 222, in the extension of each slit 220, notches 260 have been made in the bottom 222, these notches serving to remove the molding mandrels forming the slits 229 and the base 252 of the fins 250. Figure 10 shows another arrangement of the means for engaging the lipstick. In figure 10, the upper edge of the opening 329 which is made in the side wall 320, carries a tongue 350. This tongue is radially flexible. It is directed towards the bottom 322 of the support and oriented, according to an obtuse angle, towards its interior. The free extremity 352 of the tongue has an anchoring tip. During the introduction of the lipstick into the holder, the Tab 350 bends to the outside, and then enters, little by little, the mass of the lipstick, thanks to the pasty consistency of the latter. The anchor tip 352 still increases the maintenance of the lipstick and opposes any accidental exit of the lipstick. The product displaced during this operation can then be directed towards the opening 329. Figures 11 to 13 illustrate a preferred embodiment of the invention, showing a lipstick case. The constituent parts of this support which are identical to those of Figure 1 or have an analogous role, bear the same reference numerals increased by 400. The description of these parts will only be partially repeated. The case 400 of figure 11 comprises a cylindrical support 415 with closed bottom 416 in which a cylindrical sheath 408 is forcedly inserted. The lower part of this sheath is surrounded by three moldings in the form of washer portions 415a, 415b , 415c of small thickness, which extend radially outwards. These washer portions are discontinuous to increase their flexibility in the axial direction of the sleeve, which facilitates the assembly of the mechanism. In the cylindrical side wall 409 of the sheath 408, two slits 411 are placed face to face and axially oriented. In these grooves the two projections 424 of the support 430 are arranged. The support 430 has substantially the same construction as that shown in figure 10. As it is visible, in particular in figure 12, the cover comprises a projection 414, in whose vicinity is provided an O-ring 414a, made of elastomeric material. The outer periphery of this gasket 414a is in contact, with gentle rubbing, against the inner bottom of a metal cylindrical shell 401. On the upper part of the metal shell 401 a cylindrical shell 404 is mounted, the inner wall of which is provided with two internal grooves, intended to receive the projections 424 of the support 430 (see also figure 13). A lip red bar 440 is mounted on the holder 430. To protect the lipstick, this assembly is closed by a cylindrical cap 460, on the bottom of which is arranged a foam block 401a whose face is turned towards the lipstick it is covered by a flexible and waterproof film 401b. This block of foam prevents the accidental exit of the lipstick 440 during transport and ensures, on the other hand, the impermeability of the case, in order to reduce, if necessary, the drying of the lipstick. Figure 13 shows the arrangement of the lipstick 440 in the holder 430. During the introduction of the lipstick into the holder, the tabs 450, disposed at the top of the aperture 429, create at the base of the bar lips 431 marks axially oriented. To increase the behavior of the lipstick on the support, the lipstick is rotated in the direction of arrow F, for example at an angle of 10 ° to 20 °. By this operation, the marks obtain an elbow shape 432. The product displaced during this operation can escape through the openings 429 and contributes to the maintenance of the lipstick. In all embodiments, the positioning of the lipstick on the support is facilitated because at the moment when a compression occurs, during this operation, of the base of the lipstick, especially the fins 250, the tongues 350, 450 or the moldings 150, any excess product can escape through the slots 29, 129 and 229 of the support 30, 130, 230, and thus contributes to the anchoring of the base of the lipstick in the support . The support of figure 3 is studied for fixing a lipstick of relatively hard consistency; while the supports of figures 4, 7, 10 and 13 can be used to support and maintain a lipstick of semi-solid consistency. The invention is, on the other hand, particularly advantageous, since it allows, owing to the new assembly system of the lipstick, to have a lipstick whose diameter is very close to that of the support. This makes it possible to prevent the lipstick from being mounted upside down in the holder. Thanks to the presence of the slits, the excess product, displaced to the base of the lipstick during the placement of the latter, by the internal wall of the support and possibly by the moldings, can be evacuated by the slits. On the other hand, the invention applies equally well to the mechanisms of classic lipstick as to lipsticks that have a more slender shape than the classical mechanisms. In this case, the support does not comprise projections on the external side wall, but is integral with a screw extending axially from the bottom of the support. It is understood that a lipstick of this type can be used for the distribution of any other type of disintegrable product, suitable for being fixed on a support, such as a kohl pencil for eye makeup, or a makeup chalk.

It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, property is claimed as contained in the following:

Claims (19)

1. Lipstick holder capable of supporting a lipstick of disintegrating solid product and intended to be slidably mounted in a case, comprising a cylindrical wall of axis (X) and constituting a skirt for maintenance of the lipstick, intended for to maintain the base of the lipstick, a transverse bottom and retaining means (M) of the lipstick, at least an opening made in the cylindrical wall characterized in that said opening extends to the bottom and is delimited by two edges laterals connected by an upper edge opposite the bottom, this opening constituting the retention means (M) of the lipstick.

2. Support according to claim 1, characterized in that the cylindrical wall extends beyond the transverse bottom by a cylindrical guide skirt connected to the bottom in the alignment of the cylindrical wall.

3. Support according to claim 1 or 2, characterized in that the opening is a longitudinal groove of orientation parallel to the axis (X).

4. Support according to one of claims 1 to 3, characterized in that a plurality of openings are provided distributed regularly over the periphery of the cylindrical wall.

5. Support according to one of claims 2 to 4, characterized in that the aperture passes through the entire height of the guide skirt in such a way that they define a plurality of tabs.

6. Support according to one of claims 1 to 5, characterized in that it has a circular section.

7. Support according to claim 5 or 6, characterized in that each tongue has an external centering projection.

8. Support according to any one of the preceding claims, characterized in that the maintenance skirt on the side opposite the guide skirt has a continuous free edge.

9. Support according to any one of the preceding claims, characterized in that it comprises outwardly two protruding spigots, a state intended to control the displacement of the support.

10. Support according to any one of the preceding claims, characterized in that each groove, on the internal face of the maintenance skirt, is bordered by an excess thickness.

11. Support according to claim 10, characterized in that each extra thickness has a rounded cylindrical wall connection area.

12. Support according to one of claims 10 or 11, characterized in that each extra thickness, on the side of the groove, forms an angle (Y) of approximately 90 ° with the cylindrical wall.

13. Support according to any one of claims 10 to 12, characterized in that the excess thickness is of the order of 0.1 to 5mm.

14. Support according to any one of claims 1 to 9, characterized in that each hole is associated with a flexible anchoring means elastically, capable of bending radially outwards, during the placement of the lipstick and sinking in the base d this.

15. Support according to claim 14, characterized in that the anchoring means is located to the right of a hole on the inner surface of the cylindrical wall or in the thickness thereof.

16. A support according to claim 14 or 15, characterized in that the anchoring means is a fin, a part of one of the sides of the fin being contiguous with the internal face of the maintenance skirt, this fin being oriented according to a plane passing through it. axis (X) of the support.

17. Support according to one of claims 14 or 15, characterized in that the anchoring means is a radially flexible tongue, one of whose ends is joined to an edge of the hole.

18. Lip product case comprising a lipstick bar supported by a support, characterized in that this support is according to any one of the preceding claims.

19. Case according to claim 18, characterized in that the support has two pins that are projecting radially outwards and that, on the one hand, each of them pass through an opening, this opening being made in the side wall of a cover in which the support moves substantially in the axial direction, and on the other hand, each is placed in a helical groove made on the inner wall of a cylindrical casing folded from a casing with the casing mounted in rotation relative to the casing and retained axially fixed.