Classifications

• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
  • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
  • A45D40/02—Casings wherein movement of the lipstick or like solid is a sliding movement
  • A45D40/04—Casings wherein movement of the lipstick or like solid is a sliding movement effected by a screw
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
  • A45D2200/00—Details not otherwise provided for in A45D
  • A45D2200/05—Details of containers
  • A45D2200/054—Means for supplying liquid to the outlet of the container
  • A45D2200/055—Piston or plunger for supplying the liquid to the applicator

Definitions

• Cam mechanism in particular for a cosmetic product applicator
• the present disclosure relates to an applicator as used in the field of cosmetics, and more particularly to a cam mechanism that can be used in such an applicator. Such a cam mechanism may however be used for other applications.
• liquid or pasty product applicators comprising a body, in which the product is contained, and a mechanism for expelling the product from the body through an opening provided in the body.
• Such an applicator is described in document FR 928 233.
• the mechanism disclosed in this document is a telescopic mechanism comprising three elements.
• a ring rotatably mounted relative to the body of the applicator makes it possible to rotate a first element, which triggers successively a rotation of the two other elements, one after the other, and expels the cosmetic product out of the box. 'applicator.
• the present disclosure relates to a cam mechanism, in particular for an applicator for a cosmetic product, comprising a rod, a sheath, a sleeve, a skirt and a body, in which the sheath is integral in rotation with the rod and able to slide relative to the rod, the skirt is integral in rotation with the sleeve and able to slide relative to the sleeve, the sleeve is integral in rotation with the body and able to slide relative to the body, the sleeve cooperating with the skirt so that the rotation of the sheath relative to the skirt causes axial movement of the skirt relative to the sheath, the sleeve cooperating with the rod and the sheath so that the rotation of the rod relative to the sleeve causes an axial movement of the sleeve relative to the rod, the axial movement of the sleeve causing, at least in one direction, the sheath sliding relative to the rod.
• a cam mechanism is, in the sense of the present disclosure, a mechanism for transforming a rotational movement into a translation movement or vice versa.
• the body, the rod, the sheath, the sleeve and the skirt are assembled so that a rotation of the rod causes, in fine, a translation of the skirt.
• the sleeve is simultaneously secured in rotation of the rod and configured to slide relative to the rod.
• the skirt is simultaneously integral in rotation with the sleeve and configured to slide relative to the sleeve.
• the sleeve is simultaneously integral in rotation with the body and configured to slide relative to the body.
• the axial direction is defined by the axis of rotation considered.
• a radial direction is a direction perpendicular to the axial direction and intersecting this axis.
• an axial plane is a plane containing the axis and a radial plane is a plane perpendicular to this axis.
• the sleeve and the sleeve are driven in an axial movement relative to the rod, which forms a first deployment.
• the rotation of the rod causes rotation of the sheath.
• the rotation of the sheath in turn causes an axial movement of the skirt, which forms a second deployment.
• the various parts of the cam mechanism according to the present disclosure are deployed simultaneously, which allows to distribute the forces between the parts and to limit their wear.
• the deployment of the mechanism measured for example by the axial speed of the skirt with respect to the rod, is faster than for the devices of the state of the art.
• this mechanism is particularly compact and allows, in its use in a cosmetic applicator, a regular delivery rate due to the simultaneity of the two deployments.
• the rod, the sheath, the sleeve, the skirt and the body are coaxial.
• the cam mechanism may be a telescopic mechanism configured to deploy in the axial direction.
• the shaft, sheath, skirt, sleeve and body are arranged radially around each other, particularly in this order.
• the rod, the sheath, the sleeve, the skirt and the body are not necessarily symmetrical to revolution, at least because of the rotational securing means they may have.
• the rod comprises a thread engaged with a complementary thread of the sleeve.
• a thread may designate either a male thread or a female thread, sometimes called tapping.
• a male or female thread of the rod is engaged with a complementary female or male thread, respectively, of the sleeve.
• the skirt has a thread engaged with a complementary thread of the sleeve.
• an alternative to the threads could comprise at least one radial protrusion, for example of the rod, engaged in a helical slot, for example the sleeve.
• the sleeve comprises a tubular body and a transverse wall extending transversely relative to the tubular body, said transverse wall comprising said complementary thread of the sleeve.
• the tubular body may extend in the axial direction about the axis.
• the complementary thread may be provided on the outer periphery of the wall or in an internal hole of the wall.
• the sleeve is configured to bear axially on the transverse wall of the sleeve.
• the transverse wall exerts on the sheath a force that drives the sheath sliding in the axial direction.
• securing means in rotation of the rod with the sleeve and / or means for securing the skirt with the sleeve and / or means for securing the sleeve with the body comprise a radial protuberance engaged in an axial slot.
• the axial slot may be a groove, a cutout or the like.
• the slot may extend substantially axially.
• the protrusion may be a rib, a tongue, a lug or the like.
• the protuberance can protrude radially toward the slot.
• the slot forms a guide for the axial sliding of the protuberance, while limiting its radial stroke, thus ensuring a rotational connection.
• the applicator comprises an applicator tip provided with an opening communicating with the interior of the reservoir, and the cam mechanism is housed at one end of the applicator opposite to the opening.
• the skirt belongs to a piston configured to push the product out of the tank.
• the body of the cam mechanism forms the body of the applicator defining the reservoir.
• the body of the applicator and the body of the cam mechanism are a single piece.
• the body of the cam mechanism may be a separate part of the body of the applicator; in these embodiments, the cam mechanism may be housed in the body of the applicator, the body of the cam mechanism being locked in rotation, or even axially, relative to the body of the applicator.
• the applicator comprises a rotatably mounted base relative to the body and the rod is integral in rotation with the base.
• the rotation of the base causes a rotation of the rod and the deployment of the cam mechanism that follows.
• the axial position of the rod relative to the base and / or the body can be fixed.
• FIG. 2 is a longitudinal sectional view of the applicator of Figure 1, wherein the cam mechanism is fully deployed;
• FIG. 3 is a sectional view along plane III-III of FIG.
• FIG. 4 is an exploded perspective view of certain parts of the mechanism according to the embodiment of FIG. 2;
• Figure 5 is a view similar to Figure 2, wherein the cam mechanism is fully retracted.
• Figure 1 is a perspective view of an applicator 100 of liquid or pasty product, particularly in cosmetic product applicator, for example of the lipstick type, lip balm, cream, lip gloss, concealer, foundation, eyeshadow, etc.
• the applicator 100 comprises a body 110, here substantially tubular, or even symmetrical, about an axis X.
• the axis X here defines an axial or longitudinal direction .
• the body forms a reservoir capable of containing said product.
• the body 110 is optionally provided, at one of its ends, here its upper end, an applicator tip 112 that can be integral with the body 110, or alternatively be formed by a piece independent of the body 110.
• the shape of the tip optimizes the application of the product.
• the tip 112 has a beveled outer surface 113, inclined relative to the axis X of the applicator.
• the bevelled outer surface 113 may be textured or made of another material which is more pleasant to the touch, this other material being for example molded onto the end piece 112.
• the product is dispensed on the applicator tip 112 through an opening 114.
• the opening 114 opens on the applicator tip 112, more particularly on the outer surface 113, and fluidly communicates with the product reservoir.
• the applicator 100 comprises a cam mechanism 10.
• the cam mechanism 10 comprises a rod 20, a sleeve 30, a sleeve 40 and a skirt 50.
• the cam mechanism 10 is shown fully expanded.
• the rod 20 is substantially rectilinear and extends here along the X axis of the applicator.
• the rod 20 is in this case a solid rod, but it could also be provided hollow.
• the rod 20 has a thread 22, in this case a male thread.
• the thread 22 may be provided on an outer periphery of the rod 20.
• the thread 22 extends substantially the entire length of the rod 22, in the axial direction.
• the rod 20 could comprise a non-threaded portion, for example at its upper end, so as to form a stop and prevent the element engaged with the thread 22 from disengaging.
• the rod 20 comprises at least one axial slot, in this case two diametrically opposed grooves 24.
• the grooves 24 extend substantially axially.
• the grooves 24 are recessed towards the inside of the rod 20.
• the grooves 24 interrupt the threading 22.
• the rod 20 could have an oblong cross-sectional shape, the threading 22 being provided at least on the walls curved oblong shape.
• the rod 20 may be assembled to a base 26, typically at one of its ends, for example its lower end.
• the base 26 comprises a disk-shaped base 27, substantially circular, from which protrudes a border 28, here substantially cylindrical.
• the border 28 protrudes from the base 27 on the same side as the rod 20.
• the rod 20 and the border 28 are each substantially orthogonal to the base 27.
• the rod 20 and the base 26 are made in one piece.
• the rod 20 and the base 26 could form two separate pieces, assembled to one another.
• the sleeve 30 is substantially cylindrical, here circular section, and more particularly coaxial with the rod 20.
• the sleeve 30 is, in this embodiment, placed radially outside the rod 20, that is, that is to say radially around the rod 20.
• the sleeve 30 has a thread 32, in this case a male thread.
• the thread 32 may be provided on an outer periphery of the sleeve 30.
• the thread 32 extends substantially over the entire length of the sleeve 30, in the axial direction.
• the sleeve 30 comprises, at one of its ends, here its lower end, a bearing portion 36.
• the bearing portion 36 is here of outer section larger than the outer section of the thread 32.
• the sleeve 30 could comprise a non-threaded portion, for example at its end opposite the bearing portion 36, so as to form a stop and prevent the element engaged with the thread 32 from disengaging .
• the radially inner surface of the sheath 30 is here a smooth, unthreaded surface of diameter greater than the diameter of the thread 22.
• the sleeve 30, and more particularly said radially inner surface comprises at least one radial protuberance, in this case two ribs 34 diametrically opposed.
• the ribs 34 extend substantially axially.
• the ribs 34 project inwardly from the sleeve 30, that is to say radially towards the rod 20.
• the ribs 34 of the sleeve 30 are engaged in the grooves 24 of the rod 20.
• the grooves 24 and the ribs 34 thus form rotational locking means, whereby the sleeve 30 is rotationally integral with the rod 20, but the sleeve 30 remains free in translation with respect to the rod 20.
• the sleeve 40 is here coaxial with the rod 20 and placed, in this embodiment, radially outside the rod 20 and the sleeve 30, that is to say radially around the rod 20 and
• the sleeve 40 comprises a tubular body 41 and a transverse wall 46 extending transversely with respect to the tubular body 41.
• the tubular body 41 is substantially cylindrical about the axis X, of circular section.
• the internal diameter of the tubular body 41 may be greater than the external diameter of the rod 20 and the sleeve 30.
• the transverse wall 46 extends substantially perpendicular to the tubular body 41, in this case to the inside of the tubular body 41.
• the transverse wall 46 has an orifice whose circumference is provided with a thread 42. Said orifice may be formed substantially in the center of the transverse wall 46, which forms a ring around said orifice.
• the thread 42 of the sleeve is a thread complementary to the thread 22 of the rod 20.
• the complementary thread 42 is in this case a female thread.
• the complementary threading 42 extends substantially over the entire thickness of the transverse wall 46, in the axial direction.
• the thread 22 of the rod and the complementary thread 42 of the sleeve thus form cam means, by which the rotation of the rod 20 with respect to the sleeve 40 causes axial movement of the sleeve 40 with respect to the rod 20.
• the rotation of the rod 20 relative to the body 110 causes axial movement of the sleeve 40 relative to the body 110 .
• the sleeve 40 comprises at least one axial slot, in this case a cutout 44 (see Figures 3 and 4).
• the cutout 44 extends substantially axially.
• the sleeve 30 is configured to bear axially on the transverse wall 46 of the sleeve 40.
• the bearing portion 36 bears on the transverse wall 46.
• the bearing portion is even secured axially with the sleeve 40, here by clipping.
• the sleeve 30 is then integral in translation relative to the sleeve 40 but remains free to rotate relative to the latter.
• an axial movement of the sleeve 40 drives the sleeve 30 in the same axial direction relative to the rod 20, at least in one direction, here in both directions.
• the skirt 50 is here coaxial with the sleeve 30 and placed, in this embodiment, radially outside the rod 20 and the sleeve 30, that is to say radially around the rod 20 and the sleeve 30, and radially inside the sleeve 40, at least inside the tubular body 41.
• the skirt 50 has a thread 52 on its inner surface.
• the thread 52 of the skirt is a thread complementary to the thread 32 of the sleeve 30.
• the complementary thread 52 is in this case a female thread.
• the complementary thread 52 extends substantially the entire length of the skirt 50, in the axial direction.
• the thread 32 of the sleeve and the complementary thread 52 of the skirt thus form cam means, by which the rotation of the sleeve 30 relative to the skirt 50 causes axial movement of the skirt 50 with respect to the sleeve 30.
• the rotation of the sleeve 30 relative to the sleeve 40 causes an axial movement of the skirt 50 relative to the sleeve 40 .
• the radially outer surface of the skirt 50 is here a smooth surface, unthreaded, of diameter smaller than the inside diameter of the sleeve 40.
• the sleeve 40 and the skirt 50 are able to slide one relative to each other, especially in the axial direction.
• the skirt 50 may comprise at least one radial protuberance, in this case a tongue 54.
• the tongue 54 may be provided only on a lower part of the skirt 50.
• tongue 54 protrudes outwardly of the skirt 50, that is to say radially towards the sleeve 40.
• the tongue 54 of the skirt 50 is engaged in the cutout 44 of the sleeve 40.
• the cutout 44 and the tongue 54 thus form rotational locking means, whereby the skirt 50 is integral in rotation with the sleeve 40 but free in translation relative to the latter.
• the cam mechanism 10 is a telescopic mechanism in which the rod 20, the sleeve 30, the skirt 50, the sleeve 40 and the body 110 are coaxial and arranged around each other radially in this order, from the inside to the outside.
• this order could be modified, at least reversed.
• the rotation of the rod 20 relative to the sleeve 40 causes, via the cooperation of the grooves 24 and ribs 34, a corresponding rotation of the sleeve 30, while the skirt 50 is integral in rotation of the sleeve 40 because of the engagement of the tongue 54 in the slot 44.
• the sleeve 30 is rotated relative to the skirt 50, which causes, due to the cooperation of the threads 32, 52, an axial movement of the skirt 50.
• the axial displacement of the skirt 50 relative to the sheath 30 forms a second deployment.
• this telescopic mechanism allows simultaneous double deployment of the cam mechanism members 10 in the axial direction. This allows a regular deployment and therefore a better controlled distribution of the product. Moreover it allows to have a compact mechanism and thus to be able to contain more product in a given volume.
• the body 110 of the cam mechanism 10 may form the body of the applicator 100.
• the cam mechanism 10 may preferably be provided opposite the opening 114 for dispensing the product.
• the body 110 is made of transparent material, for example copolyester or polycabronate.
• the body 110 may be dressed with a covering member 115, in particular opaque, extending axially, here substantially cylindrical.
• a covering member 115 in particular opaque, extending axially, here substantially cylindrical.
• this portion may comprise inscriptions or ornaments that reveal themselves to the user as and when the product is used.
• the covering element 115 is here mounted on a ring 116 secured to the body 110 and bears on a shoulder 117 of the body 110.
• the covering element 115 may be made of metal, for example aluminum, or in thermoplastic material optionally coated with a metal coating.
• the covering element can be fixed by snapping, gluing, screwing, or embedding.
• a hoop 118 for example of thermoplastic material, can at least partially surround the body 110 and / or the covering element 115.
• the hoop 118 can be supported on the ring 116 of the body 110.
• the hoop 118 may be provided to facilitate the gripping of the applicator 100 by the user.
• the hoop 118 is here an aesthetic element which is also used for fixing the hood.
• the applicator 100 may also comprise a base 120 rotatably mounted on the body 110, preferably at one end of the body 110 opposite the applicator tip 112, in this case a lower end of the body 110.
• the ring 120 can be assembled to the body 110 by means known in themselves.
• the base 120 is intended axis of rotation the X axis of the applicator 100.
• the hoop 118 and the base 120 are integral.
• the applicator 100 may also comprise a cap 130 configured to cap the applicator tip 112 and, where appropriate, to seal it. Sealing means (not shown) may be provided inside the cap 130 and / or at the interface between the cap 130 and the body 110, the covering element 115 or the collar 118, as the case may be .
• the cam mechanism 10 can be mounted in the applicator 110 in the following manner: the rod 20 can be mounted integral in rotation with the base 120, for example by fixing the base 26 inside the base 120 typically by gluing, hooping, crimping, etc. Splines may be provided between the base 26 and the base 120 for the rotational drive, and / or a detent may be provided for the axial locking.
• the sleeve 40 can be housed in the body 110.
• the applicator has locking means for locking the sleeve 40 in rotation relative to the body 110.
• the sleeve 40 here presents a lug 48, radially projecting from its outer surface, and configured to cooperate with an axial slot 111 of the inner surface of the body 110.
• the sleeve 40 is locked in rotation relative to the body 110.
• the skirt 50 locked in rotation relative to the sleeve 40, is also locked in rotation relative to the body 110.
• the rod 20 and therefore the sleeve 30, integral in rotation with the rod 20 are rotatably mounted by relative to the body 110.
• it is possible to rotate the rod 20 relative to the sleeve 40 by simply rotating the base 120 relative to the body 110.
• the skirt 50 has, in its upper part, a piston element 58 with which said skirt 50 forms a piston configured to push the product out of the tank.
• the applicator 100 comprises a reservoir formed in the body 110, between the applicator tip 112 and the skirt 50, more particularly the piston element 58.
• the piston element 58 closes the body 110 transversely to its axis. X of displacement.
• the piston element 58 comprises a scraper flange 56, arranged radially around an upper portion of the skirt 50.
• the scraper flange 56 comprises a substantially frustoconical portion and formed of a flexible material, by example of polyethylene, polyethylene base density, or polypropylene.
• the scraper flange 56 is mounted in force in the body 110, so that its free end is folded over the body 110 by an elastic return force. This force makes it possible not only to guarantee the sealing of the tank, located here in the upper part of the body 110 with respect to the scraper flange 56, but also to scrape the walls of the body 110, during the ascent of the skirt 50, so as to minimize the residue of unused product in the tank.
• the upper end of the piston member 58 may be configured to substantially conform, at least in part, to the inner shape of the applicator tip 112. This is facilitated by the fact that, as as previously seen, the piston 58 is locked in rotation relative to the body 110, here via the sleeve 40.
• the applicator 100 may be an applicator of a solid cosmetic product such as a stick of lipstick.
• the open end of the body 110 could be opened more widely to allow the release of the lipstick stick.
• the piston 58 could comprise a cup or any other suitable means for maintaining the solid cosmetic product. In such embodiments, a scraper flange is not useful.
• axis of the cam mechanism 10 is here coincident with the axis X of the applicator 100, these axes could be distinct, parallel to each other or not.

Landscapes

• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Coating Apparatus (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=60302219

Family Applications (1)

Country Status (4)

Family Cites Families (13)

• 2017
  • 2017-07-20 FR FR1756881A patent/FR3069140B1/fr active Active
• 2018
  • 2018-07-20 EP EP18752595.1A patent/EP3654800B1/de active Active
  • 2018-07-20 CN CN201880047464.4A patent/CN110891457B/zh active Active
  • 2018-07-20 WO PCT/FR2018/051860 patent/WO2019016489A1/fr unknown

Also Published As

Similar Documents

Legal Events