TUBE-SHAPED CARTRIDGE FOR A COSMETIC PRODUCT WITH DETACHABLE COUPLING TO A BASE

Description

Scope of the invention

[0001] The invention relates to containers for cosmetic products. More specifically, the invention relates to cosmetic product dispensing devices comprising a base and a cartridge configured to be removably coupled to each other. The invention particularly relates to lipstick dispensing devices. Technological background of the invention

[0002] A cosmetic product dispensing device may consist of a base and a cartridge attached to the base. This is particularly common in lipstick dispensing devices. The cartridge's function is to hold a lipstick bullet and allow access to it. To this end, the cartridge includes a receptacle for the lipstick bullet. The base's function, among others, is to allow the lipstick dispensing device to be gripped.

[0003] The cartridge and base are arranged end-to-end along the longitudinal axis of the lipstick dispensing device. Furthermore, the cartridge and base are coupled and can rotate relative to each other along an axis of rotation corresponding to the longitudinal axis of the lipstick dispensing device. Thus, by rotating the base relative to the cartridge, it is possible to move the lipstick receptacle along the longitudinal axis of the dispensing device.

[0004] Usually, the base and the cartridge are permanently attached. Therefore, when the lipstick bullet is empty, a new dispensing device needs to be purchased.

[0005] To overcome the aforementioned drawback, dispensing devices have been produced in which the base and the cartridge are removably coupled.

[0006] Document FR2502471 shows such an example of a removable cartridge.

[0007] Therefore, when the lipstick bullet is used up, the base and cartridge can be separated, and only the cartridge needs to be replaced, which is more environmentally friendly. Furthermore, a user can own just one base and several cartridges corresponding to different lipstick bullet colors.

[0008] However, when the cartridge is not attached to the base, it is susceptible to contamination by particles. Indeed, during transport or storage of the cartridge alone, for example in a handbag, particles such as dust or breadcrumbs can easily get inside. This compromises the integrity of the cosmetic product. Object of the invention

[0009] One aim of the invention is to provide a cosmetic product cartridge that can be removably coupled to a base and in which the stored cosmetic product is better protected. Brief description of the invention

[0010] To this end, the invention provides a tubular cartridge for cosmetic product as defined in the claims. A cosmetic product dispensing device comprising said cartridge is also presented.

[0011] The cartridge comprises a first longitudinal end intended to allow access to the cosmetic product and a second longitudinal end opposite it with respect to a longitudinal axis, the cartridge further comprising: an outer tube comprising at least one helical groove, a control sleeve comprising at least one longitudinal guide slot, a cosmetic product receptacle cooperating with the helical groove of the outer tube and the longitudinal guide slot of the control sleeve, a base element rotationally fixed to the control sleeve, the cartridge being configured to be removably coupled to a base such that a relative rotation of the base with respect to the cartridge causes a displacement of the cosmetic product receptacle with respect to the outer tube along a longitudinal axis of the cartridge, the bottom element helping to close access to the cartridge by the second longitudinal end of the cartridge, the bottom element being radially covered outwards by the outer tube, characterized in that the bottom element comprises a ring of ferromagnetic material or a magnet configured to help provide a retention force between the cartridge and the base when the cartridge is coupled to the base, and in that the outer tube has a cover piece which surrounds a technical part having the helical groove.

[0012] Advantageously, this design secures the cartridge when it is removed from the base and stored, for example, in a user's handbag. Here, the term 'secure' encompasses two aspects: firstly, preventing the cartridge from being operated by rotating the base element when it is removed from the base, and secondly, preventing potential contamination of the cartridge by small foreign objects entering through its second longitudinal end. Since the base element is radially covered outwards by the outer tube, it is not possible to grip it between two fingers to rotate the cartridge; moreover, given the small diameter of the base element, it is very difficult, if not impossible, to rotate it even by inserting a little finger.Therefore, once the cartridge is removed from the base, the cosmetic product receptacle remains in its current position, and the cosmetic product is perfectly protected against the risk of small foreign objects entering the cartridge. It should be noted that at the first longitudinal end, in addition to the closure provided by the base element, a small stopper or cap may be fitted to prevent small foreign objects from entering the cartridge and contaminating the lipstick bullet from the front.

[0013] It is also noted that it is not possible to rotate the control socket by grasping it.

[0014] Thus, a single part, namely the cartridge base element, can fulfill two distinct functions. First, the base element closes off access to the cartridge, preventing, when the cartridge is not attached to the base, a user from accessing the cosmetic product or dust particles from reaching the cartridge when it is, for example, placed at the bottom of a handbag. Second, the base element can optionally transmit a rotational movement from the base to the control socket. It therefore allows the cosmetic product receptacle to be moved, particularly longitudinally.

[0015] Furthermore, it should be noted that, for the purposes of this invention, "the base element helps to close access to the cartridge via the second longitudinal end of the cartridge" means that the base element obstructs access along a longitudinal axis of the cartridge. Thus, the outer tube can radially surround the base element and close radial access at the second longitudinal end of the cartridge. Moreover, this means that the base element is sufficient in itself to close access to the cartridge via the second longitudinal end.

[0016] The outer tube includes a casing piece that surrounds a technical part featuring a helical groove.

[0017] Furthermore, in preferred embodiments of the invention, one and / or the other of the following provisions may optionally be used: The base element closes access to the cartridge via the second longitudinal end of the cartridge; consequently, a single part, namely the base element, allows access to the cartridge to be closed; the base element includes a support portion for one longitudinal end of the control sleeve; thus, the rotational coupling between the base element and the control sleeve is simple; an outer radial edge of the base element is in direct sliding contact with an inner radial surface of the outer tube; consequently, the arrangement of the base element relative to the outer tube is simpler; the outer tube extends longitudinally around and over the entire height of the base element; thus, when the cartridge is not coupled to the base, the outer tube prevents accidental rotation of the base element and therefore accidental displacement of the cosmetic product receptacle;The outer tube extends substantially over the entire height of the cartridge; consequently, the outer tube forms a protective sheath for the cartridge; it is not possible to grasp the base element between two fingers to rotate it and the control sleeve; the base element helps to form, preferably together with the outer tube, the second longitudinal end of the cartridge; thus, the outer tube protects the base element; the base element is positioned at a distance and set back from the second longitudinal end of the cartridge; consequently, when the cartridge is not coupled to the base, the base element is protected and is not at risk of accidentally rotating, thereby causing the control sleeve to rotate; the cosmetic product receptacle has at least one guide pin that passes through the longitudinal guide slot of the control sleeve and is positioned in the helical groove of the outer tube;Thus, a simple mechanism allows the cosmetic product receptacle to be moved along the longitudinal axis of the cartridge; the guide pin is advantageously a nipple; it is therefore easy to obtain by molding; the base element has a first face facing the cosmetic product receptacle and a second longitudinally opposite face, the second face having a coupling member configured to cooperate with the base; consequently, the base element secures, in rotation around the longitudinal axis of the cartridge, the base and the control sleeve; the base element and the sleeve are made from a single piece of material; thus, the cartridge has fewer separate parts; the cartridge has a first cylindrical portion and a second cylindrical portion arranged following the first cylindrical portion, the second cylindrical portion having the base element and having a diameter greater than the diameter of the first cylindrical portion;Thus, the second cylindrical portion has a larger internal space to accommodate a coupling mechanism between the base element and the base, or between the base element and the control sleeve, or between the base and the control sleeve; the cosmetic product is a lipstick bullet, the base element includes an annular area loaded with ferromagnetic elements; thus, magnetic coupling is easily achieved, even without the presence of a permanent magnet in the cartridge; the base element has a substantially flat central outer face (in a median plane perpendicular to the X-axis, and preferably only slightly recessed); so that, when the cartridge is in a handbag, the risk of finding objects or foreign bodies stuck on the bottom side of the cartridge is significantly reduced.

[0018] The invention also provides for a cosmetic product dispensing device comprising a cartridge as described above and a base, the cartridge and the base being removably coupled.

[0019] One option includes a permanent magnet in the base. Since the base is a valuable part of the case, it is retained when the cartridge is changed, and therefore the permanent magnet is not discarded with the cartridge; on the contrary, the permanent magnet is kept in the base.

[0020] According to one option, in a configuration where the cartridge is assembled on the base, an interval representing an air gap (e) which separates the permanent magnet from the ring loaded with ferromagnetic elements is less than 0.5 mm and preferably less than 0.2 mm.

[0021] In addition, the cosmetic product dispensing device preferably includes a lipstick bullet placed in the cosmetic product receptacle of the cartridge. Brief description of the drawings

[0022] We will now describe, by way of non-limiting example, embodiments of the invention using the following figures: there figure 1 illustrates a dispensing device, in cross-section along a plane including a longitudinal axis, according to a first embodiment of the invention which comprises a cartridge, a base and a cap, and also represents the base seen from above, the figure 2 illustrates, according to the same cross-section, this device in which a cosmetic product receptacle is in a raised position, the figure 3 represents the base and the uncoupled cartridge, still according to the cutting plane described above, the figures 4 to 6 are views respectively analogous to figures 1 to 3of a dispensing mechanism according to a second implementation method, the figure 7 represents in perspective a casing piece for an outer tube of the cartridges according to a third embodiment, the figure 8 represents in cross-section a technical component for the outer tube, the figure 9 represents in perspective a control socket for the cartridge according to the third embodiment of the invention, and the Figure 10 illustrates in perspective a cosmetic product receptacle, a background element and the base, without a protective shell, for the dispensing device of the third embodiment, the figure 11 illustrates more particularly the magnetic retention interface between the base and the cartridge, according to a variant of the third embodiment. Detailed description of two embodiments of the invention

[0023] For the sake of clarity, only the elements useful for understanding the described implementation methods have been represented and will be detailed.

[0024] It should be noted that, in the figures, structural and / or functional elements common to the different embodiments have the same reference numerals. Thus, unless otherwise stated, such elements have identical structural, dimensional, and material properties. The scales of representation may vary from one figure to another.

[0025] A dispensation scheme 10 The cosmetic product according to the invention comprises a base 8, a cartridge 13 and optionally a cap 15 shown in transparency at Figures 1 And 4 The dispensing device 10 is represented, using schematic diagrams, according to a first embodiment of the invention in figures 1 to 3 and according to a second embodiment of the invention to figures 4 to 6 . THE figures 7 to 10 concern a third embodiment. The figure 11 concerns a variant of the third embodiment.

[0026] The base8 and the cap 15 Together, they form a case designed to showcase the cosmetic product dispensing device. The base and cap can feature a high-quality aesthetic design, or even a luxury personalized design.

[0027] The cartridge 13 includes an outer tube 1, a control socket 2, a receptacle 3 PC lipstick bullet and a background element 4 as will be described in more detail below.

[0028] In the embodiments described, the dispensing mechanism 10 This is a lipstick case. It contains a lipstick bullet. PC. PC lipstick bullets come in the form of a solid or semi-solid material, including a paste, and are applied by rubbing them onto the user's lips.

[0029] Furthermore, the dispensing device 10 has a generally cylindrical shape and a longitudinal axis X. It extends between a first longitudinal end P and a second longitudinal end S. The second longitudinal end S of the dispensing device 10 is the one furthest from the user's lips when they apply the PC grape to their lips. In the remainder of this description, reference will also be made to the first P and second longitudinal ends S, defined as above, when describing components of the dispensing device 10. Furthermore, the adjectives "internal" and "external" will be used respectively with respect to the inside and outside of the dispensing device 10. In addition, a median plane is defined as a plane perpendicular to the longitudinal axis X.

[0030] The dispensing device 10 is capable of occupying a closed position, illustrated in Figures 1 And4 in which the cap 15 closes access from a first longitudinal end P inside the cartridge 13. The dispensing device 10 is also able to occupy an open position, illustrated in figures 2, 3 And 5, 6 in which the interior of the cartridge 13 is accessible from the first longitudinal end P.

[0031] It should be noted that the base 8 and the cap 15 are configured to cooperate, for example by magnetic or mechanical means, so that when the dispensing device 10 is in the closed position, the cartridge 13 is masked, from outside the dispensing device 10, by the base 8 and the cap 15.

[0032] Furthermore, base 8 and cartridge 13 can be removably coupled as will be described in more detail below. Base 8 and cartridge 13 are coupled on the figures 1, 2 And 4, 5 They are depicted uncoupled at figures 3 And6 .

[0033] Indeed, the user may, for example, wish to purchase a replacement cartridge 13 when the PC lipstick bullet is used up. The user may also wish to keep several cartridges 13, each containing a PC lipstick bullet of a different color, for example in a handbag. The user may also wish to use a specific base 8 and cap 15 in a certain situation, for example in a professional setting, to hold the cartridge 13, and use a different base 8 / cap 15 combination to hold the cartridge 13 in another situation, for example at a party. Thus, the cartridge 13 may frequently be detached from the base 8, sometimes for extended periods. There is therefore a risk that dust may enter the cartridge 13 and contaminate the PC lipstick bullet.

[0034] The base 8has a general cylindrical shape and includes a protective shell 5 which forms an outer wall of the base 8. The protective shell 5 has a cylindrical wall 5A extending along the longitudinal axis X. In addition, the protective shell 5 includes a flat wall 5B extending in a plane perpendicular to the longitudinal axis X. The flat wall 5B forms a bottom of the protective shell 5. The flat wall 5B thus forms a second longitudinal end S of both the protective shell 5 and the base 8.

[0035] Furthermore, the base 8 includes a coupling element 6 resting on one face of the flat wall 5B with regard to the substantive element 4 when the base 8 and the cartridge 13 are coupled in a removable manner. The coupling element 6 Its function is to allow the base to be coupled in a removable manner. 8 to the cartridge 13as will be described in detail later.

[0036] The base 8 can notably be made of injected plastic. The protective shell 5 and the coupling element 6 They may have been made from raw materials or formed separately and assembled by gluing, for example. The protective shell 5 and the coupling element 6 are fixed together in rotation. Furthermore, the base 8 may have a circular, square or hexagonal cross-section.

[0037] According to the first embodiment, the coupling element 6 includes a flat disk, extending further in the median plane, which circumferentially carries a permanently magnetized element which is here in the form of an MB magnet. The MB magnet has a general ring shape and extends circumferentially around the longitudinal axis. X on a radial peripheral rim of the coupling member 6.The flat disc thus presents a circumferential opening to accommodate the magnet. MB so that a top surface of the flat disk and the magnet MB are arranged at approximately the same height along the longitudinal axis X. In this embodiment, the magnet MB It consists primarily of iron, particularly in the form of ferrite, for example strontium ferrite or barium ferrite. Depending on the variant, the magnet MB includes an alloy of neodymium, iron and boron or an alloy of aluminium, nickel and cobalt or a polymer material which contains a powder comprising one of the materials or alloy described above.

[0038] On the figure 11 the magnet MB is a ring magnet spotted 9 held by clips using two plastic pieces 6.72.

[0039] According to a typical example, the outside diameter D92The diameter of the MB ring magnet is 16 mm. According to a typical example, the inner diameter D91 The diameter of the MB ring magnet is 12 mm.

[0040] The axial thickness of the ring magnet 9 is between 1 mm and 2 mm.

[0041] According to the second embodiment, the coupling element 6 comprises a key-shaped component 67, notably visible on the Figure 10 .

[0042] Note that in this figure, the base 8 is presented with a slight variation. The coupling element 6 has a cylindrical skirt, which extends longitudinally towards the second longitudinal end S from the magnet MB. The cylindrical skirt has rotating coupling grooves 72 to lock the protective shell 5 and the coupling element 6 together during rotation, if necessary.

[0043] According to bases 8 of figures 1 to 6The protective shell 5 and the coupling element 6 are joined together because these two elements are one piece. They can also be glued.

[0044] As mentioned above, the cartridge 13 includes the outer tube 1, the control sleeve 2, the PC lipstick bullet receptacle 3 and the base element 4.

[0045] The outer tube 1, also illustrated in figures 7 and 8Its function is to form an external cylindrical wall for the cartridge 13. The outer tube 1 thus has a general cylindrical shape with axis X. It comprises a first longitudinal end P designed to allow access to the lipstick bullet PC and a second opposing longitudinal end S. The first longitudinal end P of the outer tube 1 also forms a first longitudinal end P for the cartridge 13. Furthermore, the outer tube 1 extends substantially along the entire height of the cartridge 13. It thus forms a protective sleeve for the cartridge 13.

[0046] As illustrated in figures 7 and 8 The outer tube 1 includes a cover piece 11 which surrounds a technical part 12.The cover piece 11 provides the outer tube 1 with adequate structural reinforcement. The technical part 12 has, on an internal cylindrical face, two helical grooves 12A which extend along the longitudinal axis X of the cartridge 13. These two helical grooves 12A are arranged opposite each other.

[0047] Furthermore, the outer tube 1 has a first cylindrical portion 1A and a second cylindrical portion 1B arranged following the first cylindrical portion 1A. The first cylindrical portion 1A is closer to the first longitudinal end P of the cartridge 13 compared to the second cylindrical portion 1B. The second cylindrical portion 1B has a diameter greater than a diameter of the first cylindrical portion 1A, for example respectively 17 mm and 16 mm for the outside diameters.

[0048] Thus, cartridge 13 also has a first cylindrical portion and a second cylindrical portion following the first cylindrical portion. The second cylindrical portion has a diameter greater than the diameter of the first cylindrical portion.

[0049] Similarly, the casing piece 11 has a first cylindrical portion 11A and a second cylindrical portion 11B located after the first cylindrical portion 11A. The first cylindrical portion 11A is closer to the first longitudinal end P of the outer tube 1 than the second cylindrical portion 11B. The second cylindrical portion 11B has a diameter greater than the diameter of the first cylindrical portion 11A.

[0050] Note that the lower edge 11C of the outer tube forms an integral radial protection for the bottom element (skirt function) as well as for the control sleeve (2.22). In other words, the lower edge 11C extends to the bottom and forms the overall length of the cartridge.

[0051] Regarding the assembly, the technical part 12 is inserted into the covering part 11 from below, until it reaches the stop against the inner shoulder (see Fig 7 ).

[0052] The dressing room 11 and the technical part 12 They can be made of metal or injection-molded plastic. They can be bonded together. The trim piece 11 and the technical part 12 They may also have come from matter.

[0053] Furthermore, the outer tube 1 includes, at its first longitudinal end P, a circumferential mating edge 1Cwhose function will be described later.

[0054] The control socket 2 It also has a general cylindrical shape. It is positioned against the internal cylindrical walls of the outer tube 1. As illustrated on the figure 11The control sleeve 2 comprises a main body 2A of generally regular cylindrical shape. On this main body 2A, the control sleeve 2 has two longitudinal guide slots 2B that pass through and are diametrically opposed. Each longitudinal guide slot 2B extends parallel to the longitudinal axis X. At its first P and second S longitudinal ends, each longitudinal guide slot 2B extends, for a short distance relative to its longitudinal dimension, perpendicular to the axis (X), so as to define two end-of-stroke positions 2C and 2D for the receptacle 3, as will be described later. The end-of-stroke position 2C is relatively closer to the first longitudinal end P of the cartridge 13 than the end-of-stroke position 2D.

[0055] Furthermore, on the radial periphery of its first longitudinal end P, the main body 2A includes a collar 2E. The function of the collar 2E will be described later.

[0056] In addition, the control sleeve 2 includes a coupling element 22, arranged following the main body 2A, forming a second longitudinal end S of the control socket 2.

[0057] It should be noted that the coupling member 22 can be used to couple the control sleeve 2 to a base for a dispensing device in which the base and the cartridge are coupled in a non-removable manner. To achieve this, the coupling member 22 comprises a cylindrical wall having a plurality of coupling grooves 23.

[0058] In addition, the coupling member 22 has, on a wall opposite the base when the base and the cartridge are coupled, an orifice 24 due to the fact that the control sleeve 2 is preferably formed by injection of a plastic material.

[0059] In the case of the present invention, the outer tube 1, and in particular the second cylindrical portion 11B of the housing 11, surrounds this coupling member 22. Thus, advantageously, the dispensing device 10 according to the invention can be implemented with a control sleeve 2 also adapted for a dispensing device 10 in which the base and the cartridge are coupled in a non-removable manner. Furthermore, the coupling member also serves to couple the control sleeve 2 to the base element 4.

[0060] The receptacle 3 for the PC lipstick bullet is presented here in the form of a receiving cup. Furthermore, it comprises a main body 3A with a generally regular cylindrical shape, i.e., a constant diameter along the longitudinal axis X. As illustrated in the Figure 10 , the receptacle 3 includes, on an external face of the main body 3A, two guide pins 36 which are diametrically opposed and extend radially outwards from the receptacle 3. The function of the two guide pins 36 will be described later. Receptacle 3 also preferably includes injected plastic.

[0061] The base element 4 occupies the second longitudinal end S of the cartridge 13. In addition, the base element 4 has first means for coupling to the base 8. The base element 4 also has second means for coupling to the control sleeve 2 so that the base element 4 and the control sleeve 2 are rotationally fixed.

[0062] According to the embodiments shown, the first coupling means at the base 8 comprise a radial peripheral rim 4M of the background element 4.

[0063] In the examples illustrated in figures 7 to 11 , the radial peripheral rim 4M forms a magnetic coupling / retention means and is for this purpose loaded with ferrites, that is to say more generally a ferromagnetic material capable of becoming magnetized in an induced manner under the effect of an incident magnetic field.

[0064] More specifically, ferromagnetic material is a material with a passive magnetic property, that is, a material which does not induce a permanent magnetic field under normal conditions but is attracted by a magnet.

[0065] For example, particles of such a ferromagnetic material can be inserted into the plastic substrate material to be molded during the molding process.

[0066] For example, the plastic substrate material to be molded is a thermoplastic material, such as polypropylene (PP), polyethylene terephthalate (PET), polyvinyl chloride

[0067] (PVC) or any other polymer suitable for molding and / or injection. Passive magnetic particles can be, for example, iron particles, ferrite particles, or passivated ferric oxide particles.

[0068] According to an alternative solution illustrated to figures 1 to 6The base element 4 includes a permanently magnetized element which is in the form of an MC magnet. The MC magnet has a general ring shape and extends circumferentially around the longitudinal axis X on a radial peripheral rim of the base element 4.

[0069] In one embodiment, the magnet MC It consists primarily of iron, particularly in the form of ferrite, for example strontium ferrite or barium ferrite. In some variations, the MC magnet comprises a neodymium, iron, and boron alloy, an aluminum, nickel, and cobalt alloy, or a polymer material containing a powder of one of the materials or alloys described above. In other variations, the MC magnet may be a piece of ferromagnetic material that reacts by magnetization to an incident magnetic field.

[0070] The magnet or ring made of ferromagnetic material MC is arranged on one face of the base element4 opposite the flat wall 5B of base 8 when base 8 and the cartridge 13 are mated.

[0071] At this location, the air gap in the coupled position will be less than 0.5 mm and preferably less than 0.2 mm. Knowing that the attractive force between two elements under the action of a magnetic field decreases with the cube of the air gap distance, we will seek to obtain a gap as small as possible, and in practice, we will aim for the ferromagnetic material ring NC to be in direct contact with the magnet 9, as illustrated in dashed lines in the diagram. figure 11 .

[0072] According to the second embodiment of the invention, the first means for coupling to the base 8 comprise a coupling member 4B having a lock-shaped portion 47 as illustrated in the Figure 10 .

[0073] According to embodiments of the invention, the second means of coupling to the control sleeve 2 comprise a support portion 4A which extends in the median plane and which supports the coupling member 22 which thus forms a second longitudinal end S of the control sleeve 2. This support portion 4A is circumferential.

[0074] According to the first embodiment, the second means of coupling to the control sleeve 2 comprise at least one tab 4C cooperating with at least one complementary element, for example a tab, of the coupling element 22 of the control sleeve 2.

[0075] According to the second embodiment, the second means of coupling to the control sleeve 2 comprise a member 4D, the shape of which is close to that of the tongue 4C, and which also cooperates with at least one member of complementary shape to the coupling member 22 of the control sleeve 2.

[0076] These second coupling means are carried by a face axially opposite the receptacle 3.

[0077] In addition, the bottom element 4 closes access to the inside of the cartridge 13 by the second longitudinal end S of the cartridge 13. Thus, it forms a bottom of the cartridge 13. According to an alternative, the bottom element 4 helps to close access to the inside of the cartridge 13, for example by cooperating with a dropped edge of the outer tube 1 which extends in the median plane.

[0078] Thus, even when the cartridge 13 is uncoupled from the base 8, the PC lipstick bullet is protected from particles that could gain entry to the inside of the cartridge 13 by the second longitudinal end S of the cartridge 13.

[0079] We notice that the central portion 4A of the background element illustrated to the figure 11 essentially appears as a flat disc 41of thin thickness. In addition, there are clip-on tabs extending upwards from the flat disc. 48 for fixing to the control socket 2 (in particular to the coupling member 22).

[0080] In the various embodiments, the outer tube 1 radially surrounds and extends longitudinally over the entire height of the base element 4. In this case, the second cylindrical portion of the cartridge 13 comprises the base element 4. Furthermore, a radial edge of the base element 4 is in direct contact with a radially internal face of the outer tube 1. Thus, as can be seen in particular on the figures 1 to 6 , the bottom element 4 forms, with the outer tube 1, the second longitudinal end S of the cartridge 13.

[0081] It should be noted that, according to an advantageous variant, the base element 4 is positioned at a distance and set back from the second longitudinal end S of the cartridge 13.

[0082] We will now describe in more detail a removable coupling between the base 8 and the cartridge 13.

[0083] According to the first and second embodiments, the magnet MB of the base 8 and the magnet MC of the bottom element 4 are positioned opposite each other when the base 8 and the cartridge 13 are removably coupled. Furthermore, their facing surfaces have opposite polarities. Thus, they cooperate and generate a removable coupling force between the base 8 and the cartridge 13. According to the first embodiment, this removable coupling force is sufficient to lock the base 8 and the bottom element 4 in rotation about the longitudinal axis X.

[0084] According to the second embodiment, the key-shaped member 67 of the coupling element 6 of the base 8 cooperates with the coupling member 4B having the lock-shaped part 47 of the base element 4. This cooperation further contributes to locking the base 8 and the base element 4 together in rotation around the longitudinal axis X.

[0085] It should be noted that the key and lock shapes, respectively of the coupling element 6 of the base 8 and the coupling member 4B of the base element 4, can be of any type. For example, these shapes can represent an "A" as illustrated in Figure 12, an "X", a "C" or even an "O".

[0086] According to a third embodiment, with reference in particular to the figure 11The magnetic and mechanical interface between the base and the cartridge is shown in more detail, firstly in an uncoupled configuration (solid lines) and secondly in a coupled configuration (dashed lines). The coupling element 6 is associated with a base element 7 for clipping a permanent magnet 9. The base element 7 includes an annular groove 70 open upwards, and designed to receive clip-on tabs 60 projecting downwards from the coupling element 6. The base element 7 can be glued or fixed in the protective case 5. The outer rim 78 of the base element includes grooves 72 engaged in the protective shell 5 to obtain a secure connection at least in rotation.

[0087] The clip tabs 60 include a ridge 63 and an annular groove 64. The roll 63is received in a complementary annular groove 73 of the base element 7. The annular groove 64 receives an additional padding 74 of the base element 7. This forms a solid and durable clip. Advantageously, a reliable and durable assembly is thus formed without the use of glue.

[0088] In addition, there is a top annular rim 62 which forms a shoulder to hold the element 9 in position against the outer rim 78 of the base element 7. The top annular rim 62 can be continuous or discontinuous depending on the circumferential direction.

[0089] The outside diameter D72 The diameter of the base element is preferably within a range of values ​​[15mm - 17mm]. Note that the diameter D72 is preferably advantageously identical to the diameter D22of the coupling element of the control sleeve, which allows for optimization of the assembly methods.

[0090] The inner diameter D70 the base element is preferably within a range of values ​​[8mm - 12mm].

[0091] If we consider the air gap denoted e which separates the upper surface 9B of the permanent magnet and the lower surface of the ferrite ring 4B of the base element, in the coupled configuration, this is preferably less than 0.5 mm, or even close to zero.

[0092] For example, the figure 11 , the rotational drive of the bottom element 4 by the coupling element 6 is obtained in the peripheral zone, thanks to striations 66 which are received in the coupled position in complementary striations 42 of the background element 4.Another solution is to provide a sufficient friction zone in the contact area of ​​the magnetic means (MB magnet versus 4B ferrite ring).

[0093] We will now describe the operation of the dispensing device 10, specifically how to access the PC lipstick bullet. Thus, we will describe below the relative movements of the components of the cartridge 13.

[0094] The collar 2E of the control sleeve 2 is designed to cooperate with the circumferential coupling edge 1C of the outer tube 1 as illustrated in the figures 1 to 6 in order in particular to block in translation along the longitudinal axis X the control sleeve 2 relative to the outer tube 1. In addition, the control sleeve 2 is mobile in rotation around the longitudinal axis X relative to the outer tube 1.

[0095] The base element 4 is fixed in rotation around the longitudinal axis X relative to the control sleeve 2. Thus, when the base 8 and the cartridge 13 are removably coupled, the base 8 and the control sleeve 2 are fixed in rotation around the longitudinal axis X.

[0096] Furthermore, the receptacle 3 cooperates with the helical groove 12A of the outer tube 1 and the longitudinal guide slot 2B of the control sleeve 2. To achieve this, each of the two guide pins 36 of the receptacle 3 cooperates with one of the two longitudinal guide slots 2B of the control sleeve 2 and passes through said slot. Thus, the receptacle 3 is movable in longitudinal translation, relative to the control sleeve 2, between the two end-of-stroke positions 2C and 2D for the guide pin 36. In addition, each guide pin 36 cooperates with one of the two helical grooves 12A of the outer tube 1 by being positioned in said groove. Thus, the receptacle 3 is movable in rotation about the longitudinal axis X and in longitudinal translation relative to the outer tube 1.

[0097] Thus, when the control sleeve 2 rotates relative to the outer tube 1 about the longitudinal axis X, each guide pin 36 of the receptacle 3 moves along a helical groove 12A and a longitudinal groove 2B. Therefore, the receptacle 3 rotates about the longitudinal axis X and translates longitudinally relative to the outer tube 1.

[0098] Thus, when the user wishes to move the receptacle 3 longitudinally relative to the outer tube 1, for example, to extend the lipstick bullet PC beyond the first longitudinal end P of the outer tube 1, they lock the outer tube 1 in longitudinal translation and rotation around the longitudinal axis X. Then, they impart a rotational movement to the protective shell 5 of the base 8 around the longitudinal axis X relative to the outer tube 1. This causes the base element 4 and the control sleeve 2 to rotate around the longitudinal axis X relative to the outer tube 1. Each guide pin 36 of the receptacle 3 then moves along a helical groove 12A and a longitudinal guide slot 2B. The receptacle 3 thus moves longitudinally along the cartridge 13.We can therefore see that a relative rotation of the base 8 with respect to the cartridge 13 causes a displacement of the receptacle 3 of PC lipstick grape with respect to the outer tube 1 along the longitudinal axis X of the cartridge 13.

[0099] Of course, many variations can be made to the invention without going outside its scope.

[0100] The base element 4 and the control sleeve 2 may in particular have been made of material.

[0101] Advantageously, as illustrated the figure 6 A small bottleneck is planned 95 or a cap to prevent small foreign objects from entering the cartridge and contaminating the lipstick bullet from the front.

Claims

1. A tubular cosmetic product (CP) cartridge (13) comprising a first longitudinal end (P) intended to allow access to the cosmetic product (CP) and a second longitudinal end (S) opposite with respect to a longitudinal axis (X), the cartridge (13) further comprising: - an external tube (1) comprising at least one helical groove (12A), - a control bushing (2) including at least one longitudinal guide slot (2B), - a cosmetic product (CP) receptacle (3) cooperating with the helical groove (12A) of the external tube (1) and the longitudinal guide slot (2B) of the control bushing (2), - a bottom element (4) rotatably integral with the control bushing (2), the cartridge (13) being configured to be removably mated to a base (8) such that a relative rotation of the base (8) relative to the cartridge (13) causes displacement of the cosmetic product (CP) receptacle (3) relative to the external tube (1) along a longitudinal axis (X) of the cartridge (13), the bottom element (4) contributing to closing access to the cartridge (13) by the second longitudinal end (S) of the cartridge (13), the bottom element (4) being radially outwardly covered by the external tube (1), characterised in that the bottom element (4) comprises a ring of ferromagnetic material or a magnet (4B,MB) configured to contribute to providing a retention force between the cartridge and the base when the cartridge is mated to the base, and in that the external tube (1) includes a lining part (11) that surrounds a technical part (12) including the helical groove (12A).

2. The cartridge (13) according to claim 1, wherein the bottom element (4) closes access to the cartridge (13) by the second longitudinal end (S) of the cartridge (13).

3. The cartridge (13) according to any one of claims 1 to 2, wherein an external radial edge of the bottom element (4) directly slidably contacts an inner radial surface of the external tube (1).

4. The cartridge (13) according to any one of claims 1 to 3, wherein the external tube (1) extends substantially over an entire height of the cartridge (13).

5. The cartridge (13) according to any one of claims 1 to 4, wherein the bottom element (4) is disposed remotely and recessed from the second longitudinal end (S) of the cartridge (13).

6. The cartridge (13) according to one of claims 1 to 5, wherein the bottom element (4) includes a first face facing the cosmetic product (CP) receptacle (3) and a second face longitudinally opposite thereto, the second face including a mating member (MC, 4B, 47) configured to cooperate with the base (8).

7. The cartridge (13) according to claim 6, wherein a mating element (6) of the base (8) comprises a key-shaped member (67) configured to cooperate with the mating member having a lock-shaped section (47) of the bottom element (4).

8. The cartridge (13) according to one of claims 1 to 7, wherein the cosmetic product (CP) is a lipstick bullet.

9. The cartridge (13) according to one of claims 1 to 8, wherein the bottom element (4) has a substantially planar central external face.

10. A device for dispensing (10) cosmetic product (CP) comprising a cartridge (13) according to any one of claims 1 to 9, a base (8) and, preferably, a lipstick bullet, the cartridge (13) and the base (8) being removably mated.

11. The dispensing device (10) according to claim 10, wherein a permanent magnet (9,MB) or a ring of ferromagnetic material associated with the ring of ferromagnetic material or the magnet (4B,MB) of the bottom element (4) associated therewith is provided in the base (8) to contribute to providing a retention force between the cartridge and the base when the cartridge is mated on the base.

12. The dispensing device (10) according to claim 11, wherein in a configuration wherein the cartridge is assembled to the base, an interval representing an air gap (e) that separates an upper surface (9B) of the permanent magnet (9, MB) or the ring of ferromagnetic material of the base (8) from a lower surface of the ring of ferromagnetic material (4M) or the magnet of the bottom element (4) associated therewith is less than 0.5 mm and preferably less than 0.2 mm.

13. The dispensing device (10) according to one of claims 10 to 12, wherein the cartridge is in accordance with one of claims 7 to 9, wherein the manoeuvring member (6) for the base (8) is capable of being mated with the mating member (MC, 4B, 47) of the bottom element (4) so that a relative rotation of the base (8) relative to the cartridge (13) causes displacement of the cosmetic product (CP) receptacle (3) along a longitudinal axis (X) of the cartridge (13).

14. The device for dispensing (10) cosmetic product (CP) according to any one of claims 10 to 13, wherein the three-dimensional coded pattern of the manoeuvring member (6) has a key shape (67), the counterpart three-dimensional coded pattern of the manoeuvring counterpart (4A) having a lock shape (47).