WO2006058668A1 - Application device comprising a unidirectional locking mechanism - Google Patents

Abstract

The invention relates to a device for applying cosmetic or medical masses, comprising a housing (10). Said housing (10) is provided with a hollow space (10c) in the interior thereof, a central longitudinal axis (M), an ejection port (10d) for the cosmetic or medical mass, as well as at least one first and second housing section (10a, 10b) which can be twisted relative to each other. The inventive device further comprises a cartridge expeller (14) that is accommodated in the hollow space (10c) of the housing (10), keeps a cartridge (12) out of the cosmetic or medical mass, and can be displaced along with the cartridge (12) in the direction of the central longitudinal axis (M) of the housing (10) during a relative rotation between the first and the second housing section (10a, 10b). In addition, at least one unidirectionally effective locking mechanism (40) is provided which allows a relative rotation between the first and the second housing section (10a, 10b) in order for the cartridge expeller (14) to be axially displaced in the direction of the ejection port (10d) of the housing (10) along with the cartridge (12) while preventing a relative rotation between the two housing sections (10a, 10b) in the opposite direction.

Description

Applicator with unidirectional anti-twist device

The present invention relates to a device for applying cosmetic or medical compositions according to the preamble of claim 1. In particular, the invention relates to a coating device with a mine, which is preferably a powder mine.

Such devices or applicators with mines of suitable for cosmetic or medical applications masses on lipid or gel base are basically known. These devices, also referred to as "pins", are used in the field of, inter alia, decorative cosmetics or personal care, such as lipsticks, lipliners, eyeliners, eyeshadow pencils, blushers, blushes, concealers and the like, but also as Common to all is that the mine is axially movable in a suitable rotary mechanism, the mine can be directly against the inner wall of the lead guide tube or, mounted in a lead holder, which slidably against the inner wall, to the wall The refill of these applicators is axially movable in both directions, ie the refill can be rotated out of the applicator for use by means of the turning mechanism and, after use, returned to its original position in the housing.

Lipid-based minerals can be prepared in a known manner by extrusion and cut to the required Mali or prepared by pouring a heated over the liquefaction mass in suitable forms and subsequent cooling. The Suitable methods for this purpose are sufficiently known to the person skilled in the relevant art.

Also, powder-based mines are known. These are first produced from a water-saturated mass. Subsequently, this precursor is removed by means of suitable binders, e.g. Cellulosederivaten and / or Calciumsulfatherπihydrat solidified, then extruded and dried.

Mills of cosmetic or medical masses of the type mentioned should be easy to apply and release as possible without pressure mass particles well, since they are applied to thin and elastic skin regions. Furthermore, such masses should be as stable as possible in order to be able to withstand different thermal loads, but especially mechanical loads, on the transport without damage. At the same time they should be soft enough to be applied by the user without any problems. The axial movement of the mine such applicators or devices should also easily and possibly can accomplish with one hand. In smooth-running applicators, the mine can be pushed back by the pressure required for application in the applicator, which is at least perceived by the user as unpleasant and disturbs the desired success of the application.

A device or an applicator of the type mentioned, which contains a powder mine, is known for example from DE 203 13 776 U1. Fig. 1 shows a longitudinal sectional view of this powder coating machine according to the prior art. To the pin shown in Fig. 1 includes a first housing portion or a cartridge 10a, in which a mine 12 is held. The first housing section 10a is held rotatably with respect to a second housing section or shaft 10b. On the second housing portion 10b, a protective cap 16 is attached, are completely enclosed by the sealed when the protective cap 16 of the first housing portion 10a and in particular the unspecified expelling opening. In the second housing portion 10b inserted a lead holder 18 which is rotatably held by a hexagonal contour, but axially displaceable. The lead holder 18 has an external thread 20 which meshes with a thread segment 22 fixedly fixed in the second housing section 10b. The lead holder 18 presses with its end face to a coil spring 24 made of steel. The coil spring 24 has three portions: a support portion 26, a clamp portion 28 whose inner diameter is slightly smaller than the outer diameter of the lead 12, and a biasing portion 30. The clamping portion 28 is slightly radially expandable to securely fix the lead but not to damage. The helical spring 24 reduces the air gap between the lead 12 and the first housing portion 10a, thus allowing a wide If there is pressure on the application surface 32 of the lead 12 in the axial direction, the lead 12 can deflect axially due to the elastic support region 26, which prevents damage to the lead 12. In the upper region of the first housing section 10a, a spring stop 34 is provided. In the assembled state, the biasing portion 30 is biased against the spring stop 34. Since the first and the second housing portion 10a, 10b are rotatable relative to each other, the lead holder 18 can be pushed back together with the mine 12 axially in the second housing portion 10b, when applied to the application surface 32 too strong pressure in the axial direction and the applicator - Is held in the usual way with one hand - either only on the first or the second housing portion 10 a or 10 b.

The mine is securely fixed here in a clamping device and the mine is axially displaced against an elastic spring force to the rear, so that they can dodge into the applicator into when applied to their application area too high a pressure that could destroy their structure. If the applicator is placed obliquely on the recording medium when applying the lead mass, it is very easy - after the escape of the mine - contact the wall of the cartridge with the recording medium possible, which, for example, when a cosmetic mass is applied to the skin of the User is perceived as disturbing and unpleasant.

A further possibility, compared to the state of the art, to safely guide the mine and to protect it from damage is that a lipid, gel-based or powder-based lead compound is at least partially introduced into a tubular casing of a flexible thermoplastic material. The methods suitable for this purpose are known, for example, from DE 32 21 296 A1 or DE 35 35 999 C1. In these processes, powder mines are wrapped with a tube section, which is then thermally shrunk.

The powder mines mentioned in DE 32 21 296 A1 and DE 35 35 999 C1 are introduced into a sharpenable sheath by means of the method known to the relevant expert and are thus removed again by switching off. However, this shutdown is not possible in a mine, which is recorded in an application device, as is known from DE 203 13 776 U1. The at least partially received in the plastic material mining mass can be carried out of the plastic wrapper only by means of a suitable Schiebeeinrichtυng. However, axial movement into the applicator is to be prevented. Soft mines, when transported out of the casing, may lose their stability; On the other hand, if the flexible casing is compressed during turning back and the when wrinkles and irregular structures form, which penetrate into the soft ground mass and possibly make them completely unusable.

U.S. Patent No. 4,357,117 discloses a writing utensil comprising a rotatable lead guide member. At the rear, inwardly directed end of the lead guide part, a flexible tongue is provided, which carries a sawtooth-shaped cam. The abutment of the lead guide part, which is arranged in the holding part of the writing instrument, has corresponding notches on the cam. The two components butt against each other and are arranged perpendicular to the major axis of the writing instrument. If the lead guide part is rotated relative to the holding part, then this moves out of the holding part, wherein the cam engages the flexible tongue in each case generating a clicking sound in an incision. Although the elasticity of the tongue makes it possible to unscrew the lead guide part of the holding part, but a reset is not reliably prevented in the geometry chosen here

Thus, the invention has the object, a device of the type mentioned in such a way that unscrewing the mining mass in the axial direction easily possible, turning back the mine mass but reliably prevented

The above object is achieved by a device having the features of claim 1. In the subsequent claims 2 to 21 are advantageous embodiments of this.

By providing the at least one unidirectionally or unidirectionally acting rotation lock is made possible that a relative rotation between the first and the second housing portion for axially displacing the mine expander is allowed together with the mine in the direction of Austreiböffnung of the housing, a relative rotation between the two housing sections in but the opposite direction is prevented. As a result, the damage to a mine, especially a powder mine is reliably prevented.

In order to make clear to the user of the device according to the invention that a rotation in the "allowed" direction takes place, it is furthermore advantageous if the components of the anti-twist device in a relative rotation between the first and the second housing portion in Austreibrichtung the mine from the Austreiböffnung a for the In other words, the forward movement of the mine should be timed and additionally indicated by an audible signal. For the rotation, the most varied configurations can be selected. A particularly safe and cost-effective solution is that the rotation is formed by a pawl. In this case, the ratchet mechanism may have at least one preferably arranged on the first housing portion, facing away from the Austreiböffnung pawl and at least one preferably arranged on the second housing portion, pointing in the direction of Austreiböffnung locking cams. Furthermore, the pawl can be a cantilever-type connected to the first housing portion spring element, which is both radially and axially deflectable, and the locking cam can by at least approximately parallel to the central longitudinal axis extending, projecting into the cavity of the second housing portion and rigidly with the second housing portion be formed connected web. It is therefore reliably prevented by the rotation of an axial movement for resetting the mine, only a radial change in position of at least one element of the rotation is required.

In order to enable the suspension of the pawl, may further be provided that the pawl is separated by a preferably L-shaped cutout of the first housing portion. In this case, the pawl spring back when passing the locking cam and thereby produce a perceptible to the human ear noise.

So that over rotation of the rotation is reliably prevented, may further be provided that the pawl, preferably at its free end, has a recess for locking the locking cam.

A reliable safeguard against a relative rotation of the first relative to the second housing portion, and vice versa, can be accomplished by providing a plurality, preferably two pawls and a plurality, preferably four locking cams. The pawls may be arranged in non-uniform pitch in the circumferential direction of the housing and / or the locking cams in a uniform pitch in the circumferential direction of the housing.

The pawl ultimately represents a segment which is formed as a cutout in the wall of the sleeve-shaped first housing portion and is connected on one side via a remaining web with this. Preferably, it is arranged at the lower, inwardly directed end of the sleeve-shaped first housing portion.

The pawl is approximated to the shape of an unequal trapezoid whose longer side over otherwise flat sectional area of the lower end of the first housing portion axially, towards the mine expander, protrudes and so ultimately forms an inclined plane on the peripheral surface of the first housing section. It is advantageous, for example, form two pawls, which are then not diametrically opposed - ie at an angle of 180 ° - but at an angle which is different from 180 ° and thereby, for example, about 135 ° to one side or the other so that upon relative rotation of the first housing section against the second housing section, both pawls do not simultaneously come into contact with a respective detent cam. Said angle indication serves only as a guide value for a preferred embodiment - it means no limitation of the inventive concept

The shape of the pawl as a non-equilateral trapezoid is not mandatory, but preferred because the force to be expended for radial deflection of the pawl decreases toward its free end and so the emergence of the pawl on the locking cam to a certain extent on a "sloping plane" takes place be deflected both in the radial and at the same time in the axial direction when it runs on the flank of the locking cam.

The locking cam is rectangular in cross-section, trapezoidal or triangular shaped - but they may have other rounded, geometric shapes in cross section and be formed as a circle segment, half-oval or paraboloid or the like. Preferred is a cross section of the locking cam in the form of a rectangle. The latching cam extends at least over a partial region of the inner wall of the second housing section. In order to make the handling of the applicator according to the invention in the sense of propulsion of the mine as smooth as possible and thus comfortable and reliably prevent a reset of the mine, a preferred embodiment of the upper, the opening of the applicator towards end portion of the locking cam is selected in which the Surface of this end portion is not flat and extends at right angles to the longitudinal axis of the second housing portion, but forms an inclined surface which rises towards the interior of this housing portion. At the same time, this surface is inclined so that it drops in the direction of rotation of the second housing section. In the assembled state, the inclination of this surface and the inclination of the lower surface of the pawl are substantially parallel to each other. In a relative rotation of the first housing portion relative to the second housing portion, the pawl runs on the end portion of the locking cam and is deflected both radially and axially. However, the resistance to this deflection is more easily overcome by the aforementioned preferred embodiment. When passing the locking cam, the pawl springs back into its starting position and thereby generates a well-audible clicking sound, which thus also clarifies the forward movement taken acoustically. However, the reliable prevention of a return movement not only prevents - as already stated above - damage to the mining mass by enclosing them if necessary enclosing or loss of stability of the mine mass, since it is irreversibly led out of the enclosing enclosure, but also allows one safe and comfortable operation of the device or the applicator with only one hand, since the applicator no longer needs to be manually secured against the resulting from a relative rotation of the first housing portion against the second housing portion return movement.

In a further embodiment, a cutout extending parallel to the longitudinal axis of the device is attached to the free end of the pawl, which extends over a portion of this end and is preferably as deep as corresponds to the material thickness of the pawl. The inclination of the radially extending cut corresponds approximately to the inclination of the end portion of the locking cam.

The pointing in the direction of Austreiböffnung end of the locking cam is at least partially formed as at least one inclined in a spatial direction, flat surface. In this case, the inclined, planar end surface of the latching cam is designed to increase in the direction of the interior of the refill. Furthermore, the pawl is formed in the plan view as a segment of a non-equilateral trapezoid whose longer side protrudes beyond the flat sectional surface of the end portion of the first housing portion to form an inclined plane.

The locking cam may be rectangular in cross-section, trapezoidal or triangular or have the shape of a circular segment, Halbovals or paraboloid in cross section. Furthermore, the locking cam is preferably formed in cross section in the form of a rectangle. In this case, the flat, inclined end surface of the locking cam is inclined sloping in the direction of rotation of the holding part. The surface of the end portion of the latching cam may be formed to increase in the direction of the interior of the holding member and inclined sloping in the direction of rotation of the holding member. Here, the sectional area of the lower end portion of the first housing portion in the assembled state of the applicator, the or the locking cams of the second housing portion touched at least partially.

It is particularly preferred that the mine is a powder mine. In order to prevent damage to the sensitive mine, in particular in the case of a powder mine, it is furthermore advantageous that the mine is at least partially surrounded by a preferably flexible and / or further preferably elastic sheath. In this case, the envelope may be formed like a tube and preferably made of a thermoplastic material or a pipe section, preferably of a plastic material, be. Thus, the mine for protection against stress, in particular mechanical loads, in the axial direction at least partially comprising a flexible enclosure, and at the same time the mine in an operation of the device or the applicator with the fingers of one hand against displacement into the applicator is hindered. The at least partial cladding of the mine should simultaneously reduce the radial clearance between the mine and the housing and minimize the risk of damaging the mine in the event of lateral pressure loading.

The material for the covering may be polyolefin, polyester, polyacetal, polyether, polyvinyl chloride, polyurethane, polyamide or butadiene / styrene copolymers, with a wall thickness between 0.01 mm and 1 mm being preferred. Since only a short-term thermal stress occurs when using a heat-shrinkable tube, can be encased on a lipid, gel or powder basis quite well by means of a heat shrink tubing.

In order to prevent twisting of the casing and to facilitate the assembly of the device according to the invention, it can further be provided that the casing is at least partially provided with a slot. In this case, the slot can be wound axially spirally or sinusoidally or at least approximately parallel to the central longitudinal axis of the housing.

So that the mine is not damaged, the edge of the slot on the side facing the mine may be at least partially rounded. It is advantageous to work out the edge on the inside of the incision, which faces the refractory mass, not sharp-edged but rounded, so that this edge exerts no notch effect in a possible Aufed and Zufedem and so not abschabt the mine mass.

In order to prevent co-rotation of the sheath, it can further be provided that the slot cooperates with a locking cam, preferably in the form of a web arranged axially on the inside of the first housing section.

The mine expander may have in its upper, the Austreiböffnung facing portion of a mushroom-shaped head extended portion, which is preferably substantially the inner diameter of a mine enclosing enclosure corresponds. This achieves a secure transition between the enclosure and mine expeller.

The expulsion opening of the applicator or the device can be closed by a removable cap, a so-called "schooner." In the case of powdery masses, it serves solely to protect the product against damage and contamination when not in use A dense seat of the schooner is of particular importance.

Suitable thermoplastic plastic materials which are suitable for the production of the parts of the applicator device according to the invention or of the device according to the invention are known to the relevant expert in sufficient numbers. Examples include, but not limited to: HD polyethylene, polypropylene, polyester, cellulose acetate or copolymers such as ABS (acrylonitrile / butadiene / styrene), MABS (methacrylonitrile / butadiene / styrene), SAN (styrene / acrylontrile), POM (Polyoxymethylene), PMMA (polymethyl methacrylate), polyamide, polycarbonate, polyvinyl chloride, polyvinyl chloride, polyacrylonitrile, polyacetal and the like.

The possible lead diameters of the device according to the invention are in principle not subject to any restrictions - preferably lead mines, in particular powder leads of the aforementioned type, which are to be used in the field of decorative cosmetics, diameter in the range of 3 mm to 15 mm, particularly preferably in the range of 6 mm to 10 mm up.

The mine can be a decorative cosmetics or personal care item. The article may be a lipstick, lipliner, eyeliner, eyeshadow pencil, blusher, blush, concealer, lip balm, deodorant stick or antiperspirant. The mine can also be a writing mine, a sign mine, a paint mine, a Markierstiftmine or cosmetics mines.

The outside of the applicator or the device may have a decorative layer, which consists of a lacquer layer or a film wrapping

In the following the invention with reference to the preferred embodiment will be explained in more detail with reference to the accompanying drawings with further details. The terms "top", "bottom", "left" and "right" used herein refer to the drawing figures with normally readable figure names and reference numbers. Showing: Fig. 1 shows a device according to the prior art;

Fig. 2 is a schematic longitudinal sectional view of a device according to the invention;

Fig. 3 is a schematic partial longitudinal sectional view at the level of the sectional plane III - III in

Fig. 2 as an enlarged detail;

3a is a schematic partial longitudinal sectional view at the level of the sectional plane III-III as an enlarged detail, with a second embodiment of the invention;

4 shows a schematic cross-sectional view of an applicator according to the invention at the level of the sectional plane III-III on an enlarged scale; and

Fig. 5 is a schematic cross-sectional view of a coating device according to the invention in the amount of the sectional plane V - V on an enlarged scale.

Fig. 2 shows a longitudinal sectional view of the device according to the invention or of an applicator device according to the invention, which serves for the application of cosmetic and / or medical compositions to the human skin. The term "pen" may also be used for the device or the applicator device The masses are shaped as refills and are based on lipid, gel or powder-based material Moreover, the device according to the invention can also be used for pens from the field of writing implements For example, pens, crayons, crayons, marker pens and the like are used.

The elongate device shown in Fig. 2 has an at least approximately circular cylindrical housing 10 made of preferably plastic. The outside of the device may have a decorative layer, which may consist of a lacquer layer or a foil wrapper. The housing 10 includes at least a first housing portion 10a, which may also be referred to as a cartridge, and a second housing portion 10b, which may also be referred to as a shaft. The first housing portion 10a and the second housing portion 10b are preferably irreversibly inserted into one another at their mutually facing front ends. The housing 10 or the first and the second housing portion 10a, 10b enclose a cavity 10c, which has an at least approximately circular cross-sectional area, as can be seen in FIGS. 4 and 5.

The first housing section 10a is open at its two front ends, wherein the opening of the first housing section 10a facing away from the second housing section 10b preferably has an at least approximately circular cross-sectional area comprising ejection opening 1Od for the recorded in the cavity 10c cosmetic or medical mass. The second housing section 10b also has an unspecified opening at its front end facing in the direction of the first housing section 10a, whereas it is closed at its front end facing away from the expulsion opening 10d. Thus, the cavity 10c extends continuously from the expulsion opening 10d to the closed end face of the second housing portion 10b.

As is further apparent from FIG. 2, the end-side end region of the first housing section 10a pointing in the direction of the second housing section 10b is reduced in its peripheral wall thickness in the direction of the outer peripheral side. As a result, this end region can absorb the front end region of the second housing section 10b, which likewise has a reduced wall thickness in the direction of the outer peripheral side. By reducing the wall thicknesses of the two housing sections 10a, 10b at their opposite Stirnendbereichen results despite the nested housing sections 10a, 10b, a total wall thickness that corresponds at least approximately the unattenuated wall thickness of the housing sections 10a, 10b, then a saver cap 50 are placed can, as explained below.

Inside the cavity 10c, the cosmetic or medical mass is arranged in the form of a preferably at least approximately circular cylindrical mine 12. The end of the lead 12 pointing in the direction of the expulsion opening 10d forms the application end 12a of the lead 12. As can be seen from FIG. 2, the lead end 12a of the lead 12 can bulge outwardly in a concave or dome-shaped manner. At its end 12 b, which is opposite to the application end 12 a, the lead 12 preferably bears against the end face of a refill drive 14 over its entire area. The mine 12 may have a diameter in the range of 3 mm to 15 mm, preferably in the range of 6 mm to 10 mm.

The mine expander 14, preferably made of plastic, which is likewise arranged in the cavity 10c, preferably has a circular-cylindrical cross-section and is hollow in its interior. At its end 14a facing the refill 12, the mine expander 14 has a refueling surface 14a which at least approximately encloses an angle of 90 ° with the median longitudinal axis M. At its opposite front end 14b of the mine expander 14 is open.

On its outer circumferential side, the mine suppressor 14 is provided with an external thread 14c, which preferably extends over at least 2/3 of its axial length from the end 14b opposite the ejection opening 10d. The external thread 14c of the mine driver 14 is threadedly engaged with a female threaded portion 10e of the housing 10. The female threaded portion 10e is provided on the second housing portion 10b. The threaded portion 10e preferably does not extend completely in the circumferential direction of the inner wall of the housing 10, but is segmentally interrupted in the circumferential direction to further guide the end of the first housing portion 10a opposite the expelling opening 10d past the female threaded portion 10e into the interior of the second housing portion 10b , For this purpose, the corresponding end portion of the first housing portion 10a is also interrupted in the circumferential direction, wherein the interruptions of the end portion of the first housing portion 10a and the threaded portion 10e of the second housing portion 10b in the circumferential direction are coordinated so that the end portion of the first housing portion 10a on the Internal threaded portion 10 e can be performed in the assembly of the housing 10 over. As is apparent from Fig. 2, the female threaded portion 10 e of the housing 10 and the second housing portion 10 b is formed by a bulge toward the interior of the cavity 10 c, which is attached to the inner wall of the housing 10 or formed integrally there. The inner threaded portion or the inner thread segments 16 forming it can preferably also be designed as radially movable, substantially rectangular cutouts of the inner wall of the housing 10.

At its end 14b opposite the ejection opening 10d, the miena driver 14 has a pin 14d which extends outwardly from its peripheral side in the radial direction and which engages in a recess 10f designed correspondingly on the inner wall of the second housing section 10b. As a result, the mine driver 14 is rotationally fixed but axially displaceable within the cavity 10c of the housing 10. It should also be noted that the recess 10f is formed by a locking cam 44 of a unidirectional anti-rotation lock 40 of the device according to the invention, which will be explained in more detail below.

The mine 12 and the mine expander 14 are enclosed by a preferably flexible and / or preferably elastic sheath 16 whose outer diameter corresponds at least approximately to the inner diameter of the first housing section 10a. The material of the enclosure 16 is selected so that the mine 12 can slide along the stationary enclosure 16 without damaging the mine 12 thereby. The serving as a lead guide sleeve sheath 16 may therefore consist of a thermoplastic material such as polyolefin, polyester, polyacetal, polyether, polyvinyl chloride, polyurethane, polyamide or butadiene / styrene copolymers. Preferably, it has a wall thickness between 0.01 mm and 1 mm. As is apparent from Fig. 2, the sheath 16 extends from the region of the application end 12a of the lead 12 to the beginning of the external thread 14c of the mine expander 14, which is at least approximately smooth-walled in this area covered by the sheath 16. In the area of the expulsion opening 10d of the first housing section 10a, a collar 10h pointing in the direction of the central longitudinal axis M is provided on the first housing section 10a, on which the enclosure 16 is axially supported and which prevents the enclosure 16 from being expelled when the mine 12 is expelled Housing 10 is driven out. The collar 10h limits the axial movement possibility of the casing 16 and corresponds to the spring stop of FIG. 1 with the same effect.

At its end 14a, which has the expulsion surface, the mine expander 14 is provided with a ngch outer facing collar or a mushroom-shaped extension 14e, which runs at least in sections in the circumferential direction in a plane perpendicular to the central longitudinal axis M. The outer diameter of the collar 14e corresponds at least approximately to the inner diameter of the envelope 16. Furthermore, the envelope 16 has an axially extending guide or longitudinal slot 16a. In the longitudinal slot 16a engages, as can be seen from Fig. 5, arranged on the inner wall of the first housing portion 10a, in the cavity 10c projecting pin 10g, which is formed as over at least a portion of the inner wall axially extending web. The longitudinal slot 16a compensates for a possible production-related, slight differences in the diameter of the mine 12, on the other hand he acts in conjunction with the pin 10g as rotation for the guided mine 12. Instead of the envelope or the lead guide sleeve 16, the mine 12 also with a shrink tube of a suitable thermoplastic material are surrounded. The material of this envelope should then have a slightly higher wall thickness, since the mine expander 14 then also has to be guided therein.

The two housing sections 10a, 10b are, as already explained above, preferably inserted irreversibly into one another, in particular locked against each other. Furthermore, the two housing sections 10a, 10b are rotatable relative to each other in their circumferential direction. As a result, the mine 12 located in the cavity 10c can be moved out of the expulsion opening 10d. If in this case the first housing section 10a is rotated relative to the second housing section 10b, or vice versa, the mine guide 14 is axially displaced as a result of the threaded engagement between the external thread 14c of the mine driver 14 and the female thread section 10e of the housing 10. When the axial movement of the mine expander 14 takes place in the direction of the expulsion opening 10d of the housing 10, in this case the mine 12 is expelled from the expulsion opening 10d. In order to prevent a relative rotation between the first and the second housing portion 1Oa ₁ 10b in a direction of rotation, which is opposite to the direction of rotation for expelling the mine 12, a unidirectional or unidirectional anti-rotation device 40 is provided. The rotation is formed by a pawl 40. The ratchet mechanism 40 has two provided on the first housing portion 10a pawls 42 and four arranged on the second housing portion 10b locking cam 44, as can be seen from Fig. 4, in which the mine 12 is not shown for reasons of simplification.

The pawls 42 are formed at the opposite end of the expulsion opening 10d of the first housing portion 10a as kragarmartige, resilient tongues, which protrude from the peripheral wall of the first housing portion 10a in the direction of the central longitudinal axis M. As is apparent from Fig. 3, this is the Aulienumfangswand the first housing portion 10 b provided with an L-shaped cutout 42 a, the shorter L-leg at least approximately vertical, i. parallel to the central longitudinal axis M, and its longer L-leg in the two-dimensional projection of Fig. 3 at least approximately horizontally, i. is substantially perpendicular to the central longitudinal axis M. By this configuration, the pawl 42 can escape both in the direction of the central longitudinal axis M and in the radial direction.

Furthermore, the pawl 42 has a pawl 42 b in the form of a right triangle, which is located in the region of the horizontally extending L-leg of the cutout 42 a. The right angle miteinschließende catheter of the pawls 42 b forms a part of the vertically extending L-leg of the cutout 42 a. Against the vertically extending triangle side of the pawls 42 b is one of the locking cams 44 explained in more detail below, when the two housing sections 10 a, 10 b are rotated relative to each other in a direction opposite to the direction that leads to expulsion of the mine 12.

Furthermore, the pawl elevation 42b projects further into the cavity 10c in the direction of the central longitudinal axis M than the remaining frontal edge of the first housing section 10a. The hypotenuse of the triangular ridge elevation 42b extends uniformly from the frontal edge of the first housing portion 10a to the apex of the triangle. Along this obliquely rising triangular side of the pawl elevation 42, the locking cams 44 slide when the two housing sections 10a, 10b are rotated relative to each other in one direction, which leads to expulsion of the mine 12. As can also be seen from FIG. 3, there is a distance between the vertically extending catheter of the pawl elevation 42b and the adjoining end edge of the first housing section 10a, which is sufficient for the pawl 42 to extend in the axial direction and optionally in the radial direction of the housing 10 can escape from its starting position shown in Fig. 3, when the two housing sections 10 a, 10 b are rotated relative to each other in one direction, which leads to expulsion of the mine 12.

The cutout 42a prevents the pawl 42 from "dodging" over the deeper area toward the inner wall of the second housing portion 10b when a stronger force is applied in an attempt to turn the lead 12 back into the apparatus the depth of the approximately perpendicular to the main axis of the device extending portion of the cutout 42 a approximately the material thickness of the pawl 42nd

The two provided in this embodiment pawls 42 are not diametrically opposite, that is offset by 180 ° to each other, but in a deviating angle. In this case, any angle deviating from 180 ° can be provided.

In Fig. 3a, another embodiment of the pawl 42 is shown. This differs from that shown in FIG. 3 in that a recess 42c is provided on the vertically extending catheter of the right-angled triangle, against which one of the locking cams 44 rests in a relative rotation between the first and the second housing sections 10a, 10b. As a result, over-rotation is reliably prevented, so that while the blocking effect of the rotation lock 40 is further improved. This solution can also be used advantageously if only one pawl 42 is present.

The four locking cams 44, which are preferably formed with a rectangular cross-section, relative to a cross-sectional plane perpendicular to the central longitudinal axis M, (but they can also be formed in any other, suitable for the application cross-section) are as on the inner wall of the second housing portion 10b formed in one piece in a circumferential division of 90 ° integrally formed webs (see also Fig. 4). As can be seen from FIG. 2, the webs 44 extend in the axial direction from the end of the second housing section 10b facing away from the expulsion opening 10d to the front end of the first housing section 10a on which the pawls 42 are formed. As already briefly mentioned above, the locking cams 44 form part of the anti-twist device for the mine conveyor 14. They act together with the pin 14 d integrally formed on the mine exchanger 14. The locking cams 44 have at their pointing in the direction of the ejection opening 1Od end a raster elevation 44a, which also have the shape of a right triangle in the two-dimensional projection. The at least approximately vertically extending catheters of the grid elevation 44a, ie the parallel to the central longitudinal axis M extending catheters gets in Anlange on the likewise vertical catheter of the pawls 42b of the pawl 42 when the two housing sections 10a, 10b are rotated relative to each other in one direction, which is opposite to the direction leading to expulsion of the mine 12. Furthermore, the grid elevation 44a has an obliquely extending hypotenuse over which the pawl elevation 42a slides with its hypotenuse when the two housing sections 10a, 10b are rotated relative to each other in one direction, which leads to expulsion of the mine 12.

The pawls 42 may be described on the basis of their shape in the plan view as a segment of an unequal trapezoid, extends beyond the otherwise flat sectional surface of this end portion of the first housing portion 10a and, so to speak, forms an "inclined plane". In the assembled state, the cut surface of the front end section of the first housing section 10a opposite the ejection opening 10d at least partially contacts the end-side end section or detent cam 44 pointing in the direction of the ejection opening 10d. The upper end section of the detent cam 44 does not have to be flat and right-hand Angle to the central longitudinal axis M of the housing 10 extend. In a preferred embodiment, the upper end portion of the locking cam 44 is formed as a surface inclined at least in one spatial direction, on the one hand to the interior of the second housing portion 10b towards rising and on the other hand decreases in the direction of rotation of the second housing portion 10b. In the assembled state, the inclination of the lower surface, ie the longer side or hypotenuse of the pawl 42, and the axial inclination of the surface of the latching cam 44 may be substantially parallel to each other.

Finally, it should be noted that on the first housing portion 10a when not using the device according to the invention, a protective cap 50 may be plugged. The protective cap 50 closes the expulsion opening 10d and extends up to the second housing portion 10b, which it overlaps at least in a small part. For this purpose, the second housing portion 10b on its outer wall on a wall reduction, so that, as shown in Fig. 2, the Schonerkappe 50 terminates almost flush with the second housing portion 10b. The features of the invention disclosed in the above description, the claims and the drawings may be essential both individually and in any combination for the realization of the invention in its various embodiments.

Claims

claims 1. A device for applying cosmetic or medical masses, comprising in its interior a cavity (10c) exhibiting housing (10) having a central longitudinal axis (M), wherein the housing (10) has a Austreiböffnung (10d) for the cosmetic or medical mass and wherein the housing (10) has at least one first and second housing portion (10a, 10b) which are rotatable relative to each other, and a in the cavity (10c) of the housing (10) received minena driver (14), the one Mine (12) from the cosmetic or medical mass holds and in the cavity (10c) of the housing (10) during relative rotation between the first and the second housing portion (10a, 10b) in the direction of the central longitudinal axis (M) of the housing (10) together with the mine (12) is displaceable, characterized in that at least one unidirectionally acting anti-rotation device (40) is provided, which is a relative rotation between the first and the second G ehäuseabschnitt (10a, 10b) for axially displacing the mine expander (14) together with the mine (12) in the direction of the expulsion opening (10d) of the housing (10), a relative rotation between the two housing sections (10a, 10b) in the opposite direction prevented. 2. Apparatus according to claim 1, characterized in that the components (42, 44) of the anti-rotation device (40) in a relative rotation between the first and the second housing portion (10a, 10b) in Austreibrichtung the mine (12) from the Austreiböffnung (10d ) generate an audible, preferably timed, sound to the human ear. 3. Device according to claim 1 or 2, characterized in that the rotation is formed by a pawl movement (40). 4. The device according to claim 3, characterized in that the pawl movement arranged at least one preferably on the first housing portion (10 a) from the expulsion opening (10 d) pioneering pawl (42) and at least one preferably on the second housing portion (10 b), in Having direction of the Austreiböffnung (10d) facing locking cams (44). 5. The device according to claim 4, characterized in that the pawl (42) with the first housing portion (10 a) cantilever-connected spring element which is both radially and axially deflectable, and that the locking cam (44) by at least approximately parallel to the central longitudinal axis (M) extending, in the cavity (10c) of the second housing portion (10b) projecting and rigidly connected to the second housing portion (10b) web is formed. 6. Apparatus according to claim 4 or 5, characterized in that the pawl (42) by a preferably L-shaped cutout (42 a) of the first housing portion (10 a) is separated. 7. Device according to one of claims 4 to 6, characterized in that the pawl (42) upon returning the locking cam (44) springs back, thereby generating a perceptible to the human ear noise. 8. Device according to one of claims 4 to 7, characterized in that the pawl (42), preferably at its free end, a recess (42c) for locking on the locking cam (44). 9. Device according to one of claims 1 to 8, characterized in that a plurality, preferably two Sperrkiinken (42) and a plurality, preferably four locking cams (44) are provided. 10. The device according to claim 9, characterized in that the pawls (42) in uneven pitch in the circumferential direction of the housing (10) are arranged. 11. The device according to claim 9 or 10, characterized in that the locking cams (44) are arranged in a uniform pitch in the circumferential direction of the housing (10). 12. Device according to one of claims 1 to 11, characterized in that the mine is a powder mine (12). 13. Device according to one of claims 1 to 12, characterized in that the mine (12) is at least partially surrounded by a preferably flexible and / or more preferably elastic sheath (16). 14. The apparatus according to claim 13, characterized in that the sheath (16) is formed like a tube and preferably consists of a thermoplastic plastic material. 15. The apparatus according to claim 13, characterized in that the sheath (16) is a pipe section, preferably made of a plastic material. 16. Device according to one of claims 13 to 15, characterized in that the sheath (16) is at least partially provided with a slot (16 a). 17. The apparatus according to claim 16, characterized in that the slot (16 a) axially spirally wound or sinusoidal. 18. The apparatus according to claim 16, characterized in that the slot (16a) extends at least approximately parallel to the central longitudinal axis (M). 19. Device according to one of claims 16 to 18, characterized in that the edge of the slot (16 a) on the mine (12) facing side is at least partially rounded. 20. Device according to one of claims 16 to 19, characterized in that the slot (16) cooperates with a locking cam (14d) preferably in the form of an axially on the inside of the first housing portion (10a) arranged web. 21. Device according to one of claims 1 to 20, characterized in that the mine expander (14) in its upper, the Austreiböffnung (10d) facing portion a mushroom-shaped enlarged head portion (14d), which preferably substantially the inner diameter of the mine enclosing Enclosure (16) corresponds.