Pot for holding a removable cartridge for a cosmetic product

Description

TECHNICAL FIELD OF THE INVENTION

[0001] The invention relates to a jar intended to contain, for individual use, a removable cartridge containing a cosmetic product, for example, a skincare cream or makeup powder. It also relates to a jar containing the removable cartridge. PREVIOUS STATE OF THE ART

[0002] Document WO 2023 / 280 429 proposed a pot of the previous type, equipped with a guide mechanism for the removable cartridge to facilitate its insertion into the pot body. Specifically, a threaded connection is made directly between the removable cartridge and the pot body, guiding a relative helical movement between the cartridge and the pot body during insertion and removal. However, gripping the cartridge for removal proves difficult, with a risk of soiling. Furthermore, the pot body is closed by a screw-on lid that rests directly against the removable cartridge. The tolerances required to define the airtight seal between the lid and the cartridge are such that achieving the desired seal is difficult without imposing very strict manufacturing and assembly tolerances, incompatible with industrial production. DESCRIPTION OF THE INVENTION

[0003] The invention aims to remedy the drawbacks of the prior art and to propose a pot intended to hold a removable cartridge of cosmetic product whose mechanism allows the replacement of the cartridge with good ergonomics, and preferably without affecting the sealing.

[0004] To this end, according to a first aspect of the invention, a jar for cosmetic product is proposed, comprising a body intended to receive a removable cartridge of cosmetic product, and a mechanism for guiding a movement of the removable cartridge relative to the body between a position of use in which the removable cartridge is housed in the body and a replacement position, in which the removable cartridge is at least partially protruding from the body parallel to a reference axis, along a helical trajectory around the reference axis.According to the invention, the mechanism comprises a drive ring, a retaining ring for the removable cartridge, a kinematic linkage between the drive ring and the body, with a single degree of freedom of movement, in rotation around the reference axis, a kinematic linkage between the drive ring and the retaining ring with a single degree of freedom of movement, in translation along the reference axis, and a kinematic linkage between the retaining ring and the body, with a single degree of freedom of movement, of helical movement along the helical trajectory.

[0005] The guiding mechanism transforms the rotational movement of the drive ring relative to the body into a helical movement of the cartridge relative to the body. By holding the container body with one hand and rotating the drive ring with the other, the user can insert or remove the cartridge smoothly and effortlessly, without direct contact with either the cartridge or the retaining ring.

[0006] In one embodiment, the drive ring covers an annular upper edge of the body, making it easily accessible. Preferably, the drive ring has an outer face facing radially outwards that is not covered by the body. Even more preferably, the outer face of the drive ring forms a surface of revolution around the reference axis, for example, cylindrical or frustoconical. This covering of the annular upper edge of the body can be achieved by a flange on the drive ring.

[0007] According to one embodiment, the kinematic link between the body and the drive ring comprises one or more circular or arc-shaped slides and one or more slides capable of sliding in the circular or circular or arc-shaped slide(s).

[0008] In this description and in the claims, a slide means a groove having a bottom, a bottomless slot or a series of one or more grooves and one or more slots, defining a linear, curved or rectilinear path.

[0009] The curved or circular slide(s) can be formed on the body and the slide(s) on the drive ring, or vice versa. Alternatively, one or more slides formed on the body can be combined with one or more slides formed on the drive ring, and one or more slides formed on the drive ring can be combined with one or more slides formed on the body.

[0010] Where applicable, the slide(s) are dovetailed, in the sense that once inserted into the arc or circular slide(s), they cannot, under normal use, be extracted by pulling parallel to the reference axis.

[0011] Where appropriate, the slide(s) include end stops for the associated slides, in order to limit the range of rotation of the drive ring relative to the body.

[0012] In one embodiment, the kinematic link between the body and the retaining ring comprises one or more helical or helical-arc slides and one or more slides adapted to slide in the helical or helical-arc slide(s). Preferably, N helical-arc slides are arranged at an angle 2 π N one of the other around the reference axis, where N is an integer greater than or equal to 3. In practice, to limit friction, N=3 will be preferred, which allows the isostaticity of the mechanism to be preserved.

[0013] The helical or helical arc slides are preferably formed within the body, and the associated slides are mounted on the retaining ring, projecting radially outwards. The slides may be formed by guide pins, for example, cylindrical pins. In one embodiment, the body includes one or more insertion slides allowing the insertion of the slide(s) of the kinematic linkage between the body and the retaining ring into the helical or helical arc slide(s) of the kinematic linkage between the body and the retaining ring.

[0014] According to one embodiment, the kinematic link between the drive ring and the retaining ring comprises one or more guide rails, oriented parallel to the reference axis, and one or more slides capable of sliding in the guide rail(s).

[0015] In one embodiment, the mechanism comprises one or more guide pins, each acting as both a slider among the slider(s) of the kinematic linkage between the drive ring and the retaining ring, and a slider among the slider(s) of the kinematic linkage between the body and the retaining ring. The desired guidance is thus achieved with significant cost savings.

[0016] Preferably, the guide pin(s) are integral with the retaining ring and pass through one or more bottomless guide slides formed in the drive ring to establish the kinematic link between the drive ring and the retaining ring. They then enter one or more helical slides formed in the pot body to establish the kinematic link between the retaining ring and the body. The guide slide(s) are formed in a wall of the drive ring located radially between a wall of the retaining ring that carries the pin(s) and a wall of the pot body in which the helical slide(s) are formed.

[0017] According to one embodiment, the retaining ring slides in translation inside the drive ring.

[0018] According to one embodiment, the retaining ring includes an annular retaining shoulder, preferably flat, intended to come into contact with a collar of the removable cartridge.

[0019] In one embodiment, the retaining ring includes an annular step designed to contact a shoulder formed on the body. In other words, at least a portion of the retaining ring is configured to abut against at least a portion of the body in the operating position. This feature allows for greater control over the position of the various rings within the pot and ensures a watertight seal for the pot.

[0020] According to one embodiment, in the operating position, the annular step of the retaining ring and the drive ring are located at the same radial distance from the reference axis.

[0021] According to one embodiment, in the operating position, the annular step of the retaining ring and the drive ring are located at the same radial distance from the reference axis.

[0022] According to one embodiment, the body has a closed or open bottom.

[0023] In one embodiment, the container further comprises a lid, preferably screwed onto an external thread formed on an outer wall of the body. The lid protects the contents of the container while securing the drive ring and the retaining ring. In another embodiment, the lid, when closed, rests against a flat annular surface of the removable cartridge when the cartridge is housed in the container. The lid then secures the cartridge, the drive ring, and the retaining ring in position.

[0024] According to one embodiment, the body has a height measured parallel to the reference axis, and a large diameter, measured in a plane perpendicular to the reference axis, greater than one and a half times the height.

[0025] In one embodiment, the pot further comprises a removable cartridge housed within the body and secured by friction to the retaining ring. This connection allows the removable cartridge to follow the movement of the retaining ring relative to the body. The cartridge can be separated from the retaining ring by applying sufficient force or torque. Other types of connection may be considered if necessary.

[0026] According to one embodiment, the removable cartridge contains a cosmetic product and is closed by a lid, preferably rigid, preferably discoidal, and preferably equipped with an opening ring or a tab. BRIEF DESCRIPTION OF THE FIGURES

[0027] Other features and advantages of the invention will become apparent from the following description, with reference to the attached figures. [ Fig. 1 ] There figure 1 illustrates a schematic exploded isometric view of a pot and a removable cartridge. Fig. 2 ] There figure 2 illustrates a schematic cross-sectional view of the pot, from the side when the removable cartridge is in a replacement position. Fig. 3 ] There figure 3 illustrates a detailed schematic cross-sectional view of the pot, from the side when the removable cartridge is in a replacement position, following detail O of the figure 2 . [ Fig. 4 ] There figure 4 illustrates a detailed schematic cross-sectional view of the pot, from the side when the removable cartridge is in a position of use.

[0028] For clarity, identical or similar elements are identified by identical reference symbols across all figures. DETAILED DESCRIPTION OF IMPLEMENTATION METHODS

[0029] On the figures 1 to 4 a pot is illustrated 1 comprising a body 12 whose outer envelope preferably exhibits rotational symmetry around a reference axis O. The body 12 presents a background 18 Preferably closed, preferably flat. The body 12 includes an upper edge 20 annular, extended vertically towards the bottom by a lateral wall 22 of the body 12.

[0030] The body 12 is preferably a single piece, and preferably made of a material suitable for injection molding, for example HDPE or PP. Other types of material are, however, conceivable, allowing for additive manufacturing or machining. The body 12 can therefore be made from a noble or natural material, for example metal or wood.

[0031] In a storage or use position, the pot 1 rests on its bottom 18, and the reference axis O is oriented vertically, defining an upward direction which will be used later to position the constituent elements of the pot relative to each other.

[0032] The side wall 22 of the body 12 includes a thin portion A forming a surface of revolution around the reference axis O and which includes the upper edge 20 ring, a thick portion B annular, located vertically below the thin portion A along the reference axis O , and whose thickness, measured in the radial direction, is greater than the thickness of the rest of the wall 22, and a continuous portion C, of relatively constant thickness, located vertically below the thick portion B,and forming the link between the thick portion B and the background 18. This portion is preferably curved, and forms a first flat shoulder 30.

[0033] The side wall 22 of the body 12 includes an inner face 22a rotated radially towards the reference axis O. On the inner face 22a open up at the level of the thick portion B, three slides 24 of helical shape, each extending over an angle less than 2 π 3 , and preferably less than π 2 around the reference axis O. The three helical slides 24 are preferably equidistant from each other. The three helical slides 24 have the same helix pitch, and each extends over the same height, measured parallel to the reference axis O, which is preferably greater than 2 mm, for example a height greater than 8 mm. They are not through-holes in the sense that they do not radially pass through the thick portion B. Each helical slide 24 has two ends forming respectively a lower stop 32, and an upper stop 34.

[0034] On the inner face 22a also open three insertion slides 26 parallel to each other and preferably parallel to the reference axis O each extending vertically from one of the helical slides 24 towards the upper edge 20. Insertion slides 26 are non-transient on the thick portion B, and, where applicable, through parts 26' at the level of the thin portion A.

[0035] The wall 22 of the body 12 includes an outer face22b, facing radially outwards and opposite the inner face 22a. The outer face 22b features radial attachment points 28 ( figure 3 ) on the thin portion A at the upper edge 20, each extending in an arc around the reference axis O and are separated in pairs by the through parts 26' insertion slides 26. The upper edge 20 of the body 12, with the annular projection 28, form the thin portion A. Alternatively, in an embodiment where the insertion slides 26 are not through-holes along their entire height, the attachment points 28 can be replaced by a single annular attachment projection.

[0036] The thin portion A is configured to fit into an annular cavity 102 of a drive ring100, the annular cavity 102 being delimited by a training collar 104 of the drive ring 100 ( figure 3 The annular cavity 102 features a second attachment point 106, preferably annular, or where appropriate composed of several arc-shaped portions. The annular cavity 102 of the drive ring 100 constitutes an annular slide 108 whose profile is complementary to that of the attachment points 28, which allows the body to be bound 12 and the drive ring 100 preserving a single degree of rotational freedom around the axis O.

[0037] The drive ring 100 features a training wall 110 of a generally cylindrical shape, connected by an upper drive edge 112 to the training collar 104.

[0038] The training wall 110 presents an outer diameter smaller than an inner face diameter 22A of the body 12 in order to insert itself into the body 12. When the thin portion A of the body 12 is inserted into the annular cavity 102 of the drive ring 100, the training wall 110 is preferably without contact with the inner face 22a of the body 12. The radial thickness and axial height of the drive flange wall 104 are such that when the thin portion A is inserted into the annular cavity 102, the training collar 104 preferably is flush with the outer face, and very close to the thick portion B, constituting an extension of the latter.

[0039] The training wall 110features three slot-shaped drive slides 114. The three training slides 114 are equidistant from each other. Each of these three slides 114 extends parallel to the reference axis O from a lower edge of the drive 116 of the training wall 110 towards the upper edge of the drive 112 over a distance less than the height of the drive ring 100.

[0040] The pot 1 includes a retaining ring 200. The retaining ring 200 is here made in two parts joined together, namely a support body 202 and a support ring 212 at an upper end 204 of the support body 202.This design allows for the choice of two different materials for the support ring and the retaining body, and in particular the choice of an elastomer material for the support ring. 212. However, a one-piece construction using a single material is also possible. The support body 202 constitutes a retaining wall 206 generally cylindrical, extending axially from the upper end portion 204 up to a ring step 210 projecting radially and axially from the retaining wall 206.

[0041] The cylindrical wall 206 of the support body 202 has an outer diameter smaller than the inner diameter of the drive wall 110. The ring walk 210 it, on the other hand, has an outer diameter smaller than the inner diameter of the continuous portion C of the wall 22 of the body 12and approximately equal to the outer diameter of the drive ring 100. These dimensions allow the retaining ring to be inserted. 200 inside the drive ring 100 and the continuous portion C of the wall 22 of the body 12.

[0042] The support body 202 features three guide slides 208, which here consist of three guide pins projecting radially from the cylindrical wall of the retaining body 202, evenly distributed around the reference axis.

[0043] During the assembly of the pot 1, the retaining ring 200 is inserted axially into the body 12. During this insertion, the guide slides 208 are each inserted into a guide rail 26 until reaching the helical slide 24associated. In this position, an annular space is defined between the inner face 22a of the wall 22 and the support body 202. This annular space is traversed by the guide pins 208. It is possible to insert the drive ring axially. 100 in this annular space, by making the three guide slides coincide 208 with the three training slides 114. When the drive ring 100 approaches a functional position (illustrated in figure 2 ), that is, the position in which the drive ring 100 will be used by a consumer, the upper edge 20 of the wall 22 of the body 12 forming the thin portion A penetrates the annular cavity 102 of the drive ring 100. When the drive ring 100enters its functional position, the second annular projection 106 of the annular cavity 102 and the annular projection 28 of the thin portion A They clip together elastically, which allows the drive ring to be restricted. 100 to a pivoting movement around the reference axis O. The guide pins 208 of the retaining ring 200 then each pass through the training wall 110 of the drive ring 100, via slotted drive slides 114, to enter the helical slides 24 of the wall 22 of the body 12.

[0044] The pot 1 is configured to accommodate a removable cartridge 300. The removable cartridge 300 includes a tank 304 watertight, the upper end of which forms a crown 302 radially projecting.

[0045] The dimensions of the tank 304 and the crown 302 are such that it is possible to insert the removable cartridge 300 in the retaining ring 200, until the crown 302 come to an axial stop against a flat shoulder 213 of the support ring 212. In particular, it is advantageous to provide for the tank wall 304 be slightly truncated conical, to avoid friction against the retaining ring 200.

[0046] If necessary, it can be anticipated that the crown 302 has an outer diameter greater than the outer diameter of the retaining body 202. In this scenario, the crown 302 penetrates at least partially into an annular recess 120 provided at the upper edge of the drive 112.

[0047] The removable cartridge 300is configured to hold one or more cosmetic products, in liquid, paste or solid form, such as a powder. The removable cartridge 300 preferably has a lid 308, said operculum 308 being discoidal and preferably rigid. The operculum 308 is configured to seal the removable cartridge 300 and is intended to be at least partially removed upon first use, in particular by means of an opening ring 310.

[0048] The pot 1 preferably includes a lid 10, illustrated on the figure 4 . The lid 10 is configured to be screwed onto a thread 36 of the body 12. The thread 36 is formed on the outer face of the wall 22 of the body 12.

[0049] When the lid 10 is screwed onto the thread 36 of the body 12,the lid 10 comes to rest against a flat annular span 118 of the crown 302.

[0050] When the lid 10 is screwed onto the thread 36 and the lid 10 is supported on the flat annular span 118, which allows the removable cartridge 300 to be kept still in the pot 1.

[0051] When the consumer wants to insert a removable cartridge 300 new in the pot 1, he unscrews the lid 10 then rotate the drive ring 100 in a direction of unscrewing S in relation to the body 12 pot 1, using his hands, for example. The guide slides 208 being positioned in the drive rails 114,The retaining ring is fixed in rotation, but free in axial translation relative to the drive ring. The guide slides 208 being also further inserted into the helical slides 24, the retaining ring follows, in relation to the body 12, a helical trajectory around the axis O. As the guide slides 208 advance along the helical trajectory, constrained by the drive ring 100 turned by the consumer, the retaining ring 200 rises, relative to the body 12, to a replacement position (illustrated in figure 2 )

[0052] In the replacement position, the guide pins 208 bump against the upper stop 34, and / or ring walking 210 butt against the lower edge of the training 116 of the training corps 110. The ring walk 210The stop allows the force(s) induced by the rotation of the drive ring to be distributed. 100, and partially or totally relieve the guide pins 208 if the user attempts to move beyond the replacement position. The first shoulder 30 of the inner face 22a of the wall 22 of the body 12 and the lower edge of the drive 116 of the training corps 110 of the drive ring 100 These are therefore the limits of the vertical translation of the retaining ring 200 compared to the drive ring 100.

[0053] In the replacement position, the consumer can, if necessary, remove a used removable cartridge and insert a new removable cartridge. 300 new in the retaining ring 200, so that the crown 302 of the removable cartridge 300 rests on the support ring 212or, in the absence of a support ring 212, directly on the upper end 204 of the support body 202.

[0054] The consumer can then rotate the drive ring 100 in a tightening direction opposite to the loosening direction S in order to lower the retaining ring 200 up to the position of use (illustrated in figure 4 ).

[0055] In the operating position, the guide pins 208 bump against the lower stop 32, and / or ring walking 210 butts up against the first shoulder 30 of the inner face 22a of the wall 22 of the body 12. The ring walk 210 The stop allows the guide pins to be partially or totally relieved of stress. 208 if the user attempts to exceed the usage position. The retaining ring shoulder 213is located inside the drive ring 200.

[0056] Furthermore, the ring walk 210, abutting against the first shoulder 30, It also allows you to precisely reach the position where you need to use the removable cartridge. 300, so that the crown 302 of said removable cartridge 300 come into contact with the lid 10 during product storage by the user. This usage position therefore allows the removable cartridge 300 to be airtight and not allow the product(s) it contains to leak into the jar 1.

[0057] The body 12, the drive ring 100, the retaining ring 200 and the lid 10 They can be made of plastic and / or metal materials. The lid 10, the body 12, the drive ring 100, the retaining ring 200and the removable cartridge 300 are preferably injection-molded parts.

[0058] The operculum 308 is preferably made of plastic and / or metallic materials and / or plant material such as paper, cardboard, plant-based plastics.

[0059] Naturally, the examples shown in the figures and discussed above are given for illustrative purposes only and are not exhaustive.

[0060] According to an unillustrated variant, the pot 1 includes a background 18 closed and flat discoidal, the wall of which rises towards the thick portion B by making an angle at 90°. In other words, the continuous portion C forms a cylinder with a circular base.

[0061] The number of slides 24 and guide pin 208 can be any number, preferably greater than or equal to three.

[0062] The body 12 pot 1may, where applicable, be without foundation 18, or with an open background.

Claims

1. Pot (1) for cosmetic product, comprising a body (12) for receiving a removable cartridge (300) of cosmetic product, and a mechanism for guiding a movement of the removable cartridge (300) relative to the body (12) between a use position in which the removable cartridge (300) is housed in the body (12) and a replacement position, in which the removable cartridge (300) projects at least partially from the body (12) parallel to a reference axis (O), along a helical path around the reference axis (O), characterized in that the mechanism comprises a drive ring (100), a retaining ring (200) for the removable cartridge (300), a kinematic connection between the drive ring (100) and the body (12), with a single degree of freedom of movement, in rotation about the reference axis (O), a kinematic connection between the drive ring (100) and the retaining ring (200) with a single degree of freedom of movement, in translation along the reference axis (O), and a kinematic connection between the retaining ring (200) and the body (12), with a single degree of freedom of movement, of helical movement along the helical path.

2. Pot (1) according to claim 1, characterized in that the drive ring (100) covers an annular upper edge (20) of the body (12).

3. Pot (1) according to either claim 1 or claim 2, characterized in that the drive ring (100) has a radially outward-facing outer face not covered by the body (12).

4. Pot (1) according to claim 3, characterized in that the outer face of the drive ring (100) constitutes a surface of revolution about the reference axis (O), for example cylindrical or frustoconical.

5. Pot (1) according to any of the preceding claims, characterized in that the kinematic connection between the body (12) and the drive ring (100) comprises one or more arcuate or circular grooves (24) and one or more slides able to slide in the circular or arcuate groove or grooves (24).

6. Pot (1) according to any of the preceding claims, characterized in that the kinematic connection between the body (12) and the retaining ring (200) comprises one or more helical or helical-arc grooves (24) and one or more slides able to slide in the helical or helical-arc groove or grooves (24).

7. Pot (1) according to claim 6, characterized in that the body (12) comprises one or more insertion grooves (26) allowing the slide or slides of the kinematic connection between the body (12) and the retaining ring (200) to be inserted into the helical or helical-arc groove or grooves (24) of the kinematic connection between the body (12) and the retaining ring (200).

8. Pot (1) according to any of the preceding claims, characterized in that the kinematic connection between the drive ring (100) and the retaining ring (200) comprises one or more guide grooves (114) and one or more slides able to slide in the guide groove or grooves (114).

9. Pot (1) according to claim 8 in combination with claim 6 or claim 7, characterized in that the mechanism comprises one or more guide pins (208), each constituting both one of the slide(s) of the kinematic connection between the drive ring (100) and the retaining ring (200) and one of the slide(s) of the kinematic connection between the body (12) and the retaining ring (200).

10. Pot (1) according to claim 9, characterized in that said guide pin or pins (208) are integral with the retaining ring (200), and pass through one or more guide grooves (114) formed in the drive ring (100) to produce the kinematic connection between the drive ring (100) and the retaining ring (200), then enter one or more helical grooves (24) formed in the body (12) of the pot (1) to generate the kinematic connection between the retaining ring (200) and the body (12) of the pot (1).

11. Pot (1) according to claim 10, characterized in that the guide groove or grooves (114) are formed in a wall (110) of the drive ring (100) located radially between a retaining wall (206) of the retaining ring (200) carrying the pin or pins (208) and a wall (22) of the body (12) of the pot (1), in which wall the helical groove or grooves (24) are formed.

12. Pot (1) according to any of the preceding claims, characterized in that the retaining ring (200) comprises an annular retaining shoulder (213), preferably flat, intended to come into contact with a collar (302) of the removable cartridge (300).

13. Pot (1) according to claim 12, characterized in that, in the position of use, the annular retaining shoulder (213) of the retaining ring (200) is located inside the drive ring (100).

14. Pot (1) according to any of the preceding claims, characterized in that at least part of the retaining ring (200) is configured to abut against at least part of the body (12) in the position of use.

15. Pot (1) according to any of the preceding claims, characterized in that it further comprises a removable cartridge (300) housed in the body and secured by friction to the retaining ring (200).

16. Pot (1) according to claim 15, characterized in that the removable cartridge (300) contains a cosmetic product and is closed by a lid (308), preferably rigid, preferably discoidal, and preferably equipped with an opening ring (310) or a tab.