FR2833816A1 - Container/applicator for cosmetic or hygiene product in stick form has hole in stick for propulsion screw and support that anchors onto piston - Google Patents

Abstract

The container and applicator (1) has a rigid body (2) open at the top (20) for a stick product (6) that is propelled by a piston (3) and a screw (4) when its base is rotated. The stick has a lengthwise inner hole (60) to receive the screw, and is fitted to the piston by means of a support (7) with upper surface projections in a dovetail shape to engage with the stick and hooks on the underside to anchor the support to apertures (30) in the piston. The components of the container/applicator are made from plastic materials, typically by injection moulding.

Description

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TECHNICAL FIELD OF THE INVENTION The invention relates to the field of dispensers for hygiene products or cosmetic products. BACKGROUND OF THE INVENTION The invention relates more particularly to the dispensers of stick-shaped products, bread or solid state block, possibly soft or semi-solid.

These dispensers, commonly called "sticks", especially in the case where it is a cosmetic deodorant type product, include a mechanism for moving said bread or block in a dispenser body and thus allow the application of the product hygiene or cosmetic product as and when consumed by the end user.

STATE OF THE ART Distributors or "sticks" are already known, in particular from French Patent No. 2,573,734, or from European Patent No. 0 462 925.

These dispensers comprise a body and a closure cap, the body typically comprising the following elements: an outer body, a piston serving as a support for the product to be conditioned, a propellant mechanism of the piston comprising a central screw that can be put into operation. rotation typically through a button located on the lower part of the body.

PROBLEMS POSED

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On the one hand, known distributors are not reusable. Indeed, the distributors of the state of the art are, at least in the case of deodorants, directly filled hot, the product to be packaged in the liquid state and solidifying in the dispenser.

 Thus, with this mode of packaging, the packaged product is perfectly integral with the body, in particular by the central screw which is somehow embedded in the packaged product. By cons, these distributors are specific to this type of packaging and do not allow another type of packaging, and in particular, do not allow to recharge the dispenser once it empties and thus possibly reuse.

On the other hand, in the field of packaging consumer products, whether personal care products or cosmetics, there is a permanent demand for renewal of marketed products, this new offer to bring Also, preferably, either new functions or new uses, and in any case a possibility of adaptation to the most diverse tastes.

DESCRIPTION OF THE INVENTION According to the invention, the dispenser of a solid product in the form of a stick comprises a body of rigid material comprising an upper opening and a lower opening, a propellant mechanism of said stick comprising a screw and a piston typically provided with a threaded central portion cooperating with said screw so as to move said stick inside said body by rotation of said screw, until said stick can exit or outcrop through said upper opening, a drive button of said screw, said button being secured, typically at said lower opening, to said body in the axial direction while being free to rotate relative to said body, and is characterized in that said stick (6): a) comprises a chimney or a blind hole (60) allowing the passage of said screw,

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b) est doté, à sa base, d'un support (7) comprenant un moyen dit"supérieur" (70) pour solidariser axialement ledit bâton audit support, et un moyen dit"inférieur" (71) pour solidariser axialement ledit support audit piston, et en ce que ledit piston comprend un moyen d'ancrage dudit support, de manière à, après avoir approvisionné ledit bâton à l'état solide sur son support, et ledit distributeur, pouvoir conditionner ledit bâton dans ledit distributeur par simple déplacement axial et ainsi solidariser ledit bâton audit distributeur.

b) is provided, at its base, with a support (7) comprising a so-called "upper" means (70) for axially securing said stick to said support, and a so-called "lower" means (71) for axially securing said support to said support piston, and in that said piston comprises means for anchoring said support, so as, after supplying said stick in the solid state on its support, and said distributor, being able to condition said stick in said distributor by simple axial displacement and thus secure said stick to said distributor.

This combination of means solves all the problems posed. Indeed, the invention discloses means for departing from traditional packaging modes and in particular to make the packaging of a stick in a distributor possibly independent of an industrial process, once supplied the distributor and the product stick to condition.

The invention makes it possible, in particular, to introduce the notion of refill in the field of "stick" type dispensers, and thus to propose an original offer of new products, and new uses for products other than deodorants.

DESCRIPTION OF THE FIGURES All the figures relate to the invention.

Figures la and 1b are perspective views respectively of a support (7) and a piston (3).

FIG. 1a shows a support (7) provided with a tab (70) for anchoring a stick (6) and its chimney (60) shown in dashed lines; the stick has been shown placed on its support (7) to form a refill (8) -as if it were translucent, so as to see the tabs (70), the support (7) comprising at its lower part latches (71).

FIGS. 2a and 2b are axial sections along the axis (10) of the dispenser respectively illustrating the snapping of a refill (8) formed by the integral assembly

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 constituted by the stick (6) on its support (7), on the piston (3), and a distributor (1) corresponding to a half-view.

 Figures 3a to 3d illustrate the case of a distributor (1) circular section.

 Figure 3a shows, in axial section, the dispenser (1) loaded with its stick (6).

 FIG. 3b illustrates, by a section perpendicular to the axis (10), the cooperation between the piston (3), thanks to lateral grooves (32), and the lateral tongues (22) of the body (2), so to form a means of anti-rotation of the support (7) of the stick (6).

Figures 3c and 3d illustrate, in axial section, two methods for separating the support (7) of the piston (3) when the stick (6) has been consumed.

In FIG. 3c, a lateral pressure makes it possible to spread the tabs (71) and to disengage the hooks (710) from the piston (3).

In Figure 3d, an axial pressure allows to separate the tabs (71) and disengage the hooks (710) of the piston (3).

FIGS. 4a to 4c relate to a round section dispenser in which said support and said piston form a single piece (9) integral with said stick (6), as shown in FIG. 4a, the stick (6) and its chimney (60) being shown in dashed lines.

Figure 4b is a sectional view of the part (9) according to A-A of Figure 4a, in the plane perpendicular to the axis (10), with thread (90) formed by 2 threaded half-jaws (900).

FIG. 4c is an axial half-section illustrating the profile of the threads (40) and (90), respectively of the screw (3) and of the workpiece (9), with an angle oriented to allow the introduction of the workpiece (9) and the refill (8 ') in the dispenser.

DETAILED DESCRIPTION OF THE INVENTION According to the invention, and as illustrated in the figures, said lower means (71) of the support (7) may typically consist of at least one latching lug typically provided with a hook (710). .

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In the case illustrated in FIGS. 1a and 1b, the presence of said lower means makes it possible to use a standard piston (3). If it were advantageous to use a specific piston, it goes without saying that said lower means of the support (7) could be replaced by equivalent means carried by the piston itself.

 Said upper means (70) may be constituted by a non-axial profile, typically a dovetail profile, so as to axially secure said stick to said piston, as shown in Figure la. Other equivalent means could also be envisaged according to the strength or the mechanical characteristics of the stick itself.

 When using a standard piston (3), said piston (3) can then be perforated, so as to form said inking means (30), to allow the latching lugs (71) of the support (7).

According to a modality of the invention, and as illustrated in FIGS. 3c and 3d, said support (7) may comprise means for separating said support (7) from said piston (3), in particular after consumption of said stick product (6) , said stick then being "worn", to replace said stick "worn" by a refill or a stick "new.

Thus, said support (7) may comprise means (72) for displacing or moving said lower means relative to said piston, and thus disengaging said support and said piston. FIG. 3c illustrates the case where the support is separated from the piston by a lateral pressure exerted on the sides of the support (7) when the latter emerges through the upper opening (20), FIG. 3d illustrating the case where the support is separated. of the piston by axial pressure.

The invention is not limited to a particular form of dispenser. Said dispenser (1) can be of any shape, and comprise a body (2) of typically round, oval, rectangular or square section.

When said body (1) is of round section, it comprises at least one anti-rotation inner tongue (22) cooperating with said piston at its periphery, so as to

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 avoid rotation of said piston during its axial displacement, as shown in Figures 3a and 3b.

 According to another type of dispenser according to the invention: a) said support and said piston can form a single piece (9), integral with said stick, b) said threaded central portion (90) of said piece (9) and said screws can be chosen so as to introduce said stick into said body without damaging said screw or said central threaded portion.

In this case, illustrated in FIGS. 4a to 4c, said threaded central portion (90) may typically be formed of two portions (900) able to move apart elastically when said stick is introduced into said body.

It is then advantageous that said threaded central portion (90) and said screw (4) comprise a threading oriented so as to allow the insertion of said stick and its support into said body and its screw (4), said threading of said part Threaded central forming a dihedral angle has typically positioned at 0 and 60, so as to introduce said stick within said body without damaging the threads of said screw and said threaded central portion.

According to the invention, said product forming said stick may be chosen from any product having a sufficient consistency to form a stick, typically a soap, a deodorant, typically in the solid or semi-solid state.

It is sufficient that the stick does not collapse or break down in use or storage, and that it is preferably manually manipulable, as is the case particularly in the case of soap.

The dispenser according to the invention may comprise a cap (11) for closing off said upper opening, as illustrated in FIG. 2b.

It may also comprise sealing means at said upper and lower openings, so as to allow the packaging of a product in

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 stick comprising a volatile component. These means, known in themselves, have not been shown in the figures.

 The dispenser according to the invention, as is known in the case of distributors of the state of the art, can be made of plastic parts, typically formed by injection molding.

 Another object of the invention is the use of a dispenser according to the invention for packaging any stick product, and especially a soap, typically in the solid state.

EXAMPLES OF EMBODIMENTS The figures constitute exemplary embodiments according to the invention.

The tests were carried out with soap sticks, type Marseille soap. The supports (7), according to FIGS. 1a and 3a, have been manufactured by molding, able to snap onto a standard piston (3) of distributors. Piston and support parts (9) according to FIGS. 4a to 4c have also been manufactured.

The supports (7) were placed in the sticks during the molding of the stick soap.

BENEFITS OF THE INVENTION The invention, besides it makes it possible to solve the different problems posed, allows in particular the use of standard dispensers, by means of the specific manufacture of a single piece, namely the support (7) of the stick.

Thus, the invention makes possible product launches without having to commit sums very important for the production of specific tools, and therefore at a minimal cost.

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LIST OF REFERENCES

<Tb>
<tb> Distributor ................................. <SEP> 1
<tb> Axis <SEP> central <SEP> 10
<tb> Cap <SEP> it
<tb> Body <SEP> of <SEP> 1 .................................... <SEP > 2
<tb> Opening <SEP> Upper <SEP> 20
<tb> Opening <SEP> lower <SEP> 21
<tb> Side <SEP> Tab <SEP> anti-rotation <SEP> 22
<tb> Clamping means <SEP> ................. <SEP> 23
<tb> Piston <SEP> 3
<tb> Part <SEP> openwork = medium <SEP> anchorage ...... <SEP> 30
<tb> Part <SEP> Central <SEP> Threaded <SEP> 31
<tb> Threading <SEP> 310
<tb> Lateral <SEP> spline <SEP> 32
<tb> Vis <SEP> 4
<tb> Thread <SEP> 40
<tb><SEP> drive <SEP> button of <SEP> 4 ................ <SEP> 5
<tb> Locking means <SEP><SEP> 50
<tb> Staff <SEP> 6
<tb> Chimney <SEP> or <SEP> hole <SEP> blind <SEP> 60
<tb> Support <SEP> of <SEP> 6 ................................. <SEP> 7
<tb> Medium <SEP> Higher <SEP> 70
<tb> Medium <SEP> lower <SEP> = <SEP> paw <SEP> 71
<tb> Locking hook <SEP> .... <SEP> 710
<tb> Medium <SEP> for <SEP> disassociate <SEP> 3 .......... <SEP> 72
<tb> Recharge <SEP> = <SEP> 6 + 7 .............................. <SEP> 8
<tb> Recharge <SEP> = <SEP> 6 + 7 + 3 ........................... <SEP> 8 '
<tb> Single <SEP> Part <SEP> 3 + 7 ............................. <SEP> 9
<tb> Part <SEP> Threaded <SEP> 90
<tb> Half-jaws <SEP> threaded ......... <SEP> 900
<Tb>

Claims (16)

1. Dispenser (1) of a typically solid product in the form of a stick (6) comprising a body (2) of rigid material comprising an upper opening (20) and a lower opening (21), a propellant mechanism of said stick comprising a screw (4) and a piston (3) typically having a threaded central portion (31) cooperating with said screw so as to move said stick within said body by rotation of said screw, until said stick can be extended or flush by said upper opening, a drive button (5) of said screw, said button (5) being secured, typically at said lower opening, to said body in the axial direction while being free in rotation by report to said body, characterized in that said stick (6): a) comprises a chimney or a blind hole (60) allowing the passage of said screw, b) is provided at its base with a support (7) comprising a so-called "superior" means (70) to solidify axia said stick to said support, and a so-called "lower" means (71) for axially securing said support to said piston, and in that said piston comprises an anchoring means (30) of said support, so as to, after supplying said stick in the solid state on its support, and said distributor, being able to condition said stick in said dispenser by simple axial displacement and thus secure said stick to said dispenser. 2. Dispenser according to claim 1 wherein said lower means (71) is constituted by at least one latching lug typically provided with a hook (710). 3. Dispenser according to any one of claims 1 to 2 wherein said upper means (70) is constituted by a non-axial profile, typically a dovetail profile, so as to axially connect said stick to said piston. 4. Dispenser according to any one of claims 1 to 3 wherein said piston (3) is perforated, so as to form said inking means (30). <Desc / Clms Page number 10>  5. Dispenser according to any one of claims 1 to 4 wherein said support (7) comprises means for separating said support (7) from said piston (3), in particular after consumption of said stick product (6), said stick being then " used ", to replace said stick" worn "by a refill or a stick" new ".  6. Dispenser according to claim 5 wherein said support (7) comprises means (72) for moving or moving said lower means relative to said piston, and thus disengage said support and said piston. 7. Dispenser according to any one of claims 1 to 6 wherein said distributor (1) comprises a body (2) of typically round section, oval, rectangular or square. 8. Dispenser according to claim 7 wherein said body (1) is of round section and comprises at least one anti-rotation inner tongue (22) cooperating with said piston at its periphery, so as to avoid any rotation of said piston during its displacement axial. 9. Dispenser according to claim 1 wherein: a) said support and said piston form a single piece (9), integral with said stick, b) said threaded central portion (90) of said piece (9) and said screw are chosen so as to introduce said stick into said body without damaging said screw or said central threaded portion. 10. Dispenser according to claim 9 wherein said threaded central portion (90) is typically formed of two portions (900) able to move elastically apart when said stick is introduced into said body.  11. Dispenser according to any one of claims 9 to 10 wherein said threaded central portion (90) and said screw (4) comprise a thread oriented to <Desc / Clms Page number 11>  allow the insertion of said stick and its support into said body and its screw (4), said thread of said threaded central portion forming a dihedral angle has typically positioned at 0 and 60, so as to introduce said stick inside said body without damaging the threads of said screw and said threaded central portion.

12. Dispenser according to any one of claims 1 to 11 wherein said product forming said stick is selected from: a soap, a deodorant, typically in the solid state. 13. Dispenser according to any one of claims 1 to 12 comprising a cap (11) for closing said upper opening. 14. Dispenser according to any one of claims 1 to 13 comprising sealing means at said upper and lower openings, so as to allow the packaging of a stick product comprising a volatile component. 15. Dispenser according to any one of claims 1 to 14 consisting of plastic parts, typically formed by injection molding. 16. Use of a dispenser according to any one of claims 1 to 15 for conditioning a soap, typically in the solid state.