EP4070687A1 - Applicator unit; refillable; easy to rupture - Google Patents

Abstract

Application unit (1) with a cartridge (6) consisting of a mass-carrying cartridge (7) and a closure (8) which is integral to the cartridge (7) until it is opened and seals it, as well as a cartridge sleeve (2) for accommodating the cartridge (7 ) and a closure sleeve (3) for receiving the closure (8), the cartridge sleeve (2) and the cartridge (7) as well as the closure sleeve (3) and the closure (8) - each in pairs - a first and a second snap-in coupling (10, 11) form one part on the other part for axial fixing, characterized in that at least one of the two snap-in couplings (10, 11) is designed in such a way that it allows free movement in the circumferential direction in particular, so that the ones it fixes axially to one another Components can rotate relative to each other, in particular in the circumferential direction, and that the cartridge case (2) and the closure sleeve (3) can in turn be fixed to one another and at the same time have a force converter that has a e converts the rotation of the cartridge sleeve (2) relative to the closure sleeve (3) into an axial force or an axial force component, which pushes the closure sleeve (3) off the cartridge sleeve (2).

Description

The invention relates to an application unit with a cartridge made of a mass-carrying cartridge.

TECHNICAL BACKGROUND

Cosmetic products and applicators for applying applicator mass, for example mascara, lip gloss, eyeliner, etc., according to the prior art are characterized in that the cosmetic products and applicators are completely thrown away after the applicator mass has been largely used up. Inevitably, parts of the cosmetic product and applicator that could actually be reused are thrown away. Such prior art cosmetic products and applicators are not sustainable.

OBJECT OF THE INVENTION

It is therefore the object of the invention to create an application unit that is sustainable and, in particular, in which a large proportion of the application unit can be reused compared to the prior art.

SOLUTION ACCORDING TO THE INVENTION

This object is achieved with an application unit having the features of claim 1 and/or with a replacement cartridge having the features of claim 13.

According to the invention, the application unit comprises a cartridge from a mass-carrying cartridge and one until opened one-piece-integral to the cartridge located, these sealing closure. The application unit comprises a cartridge sleeve for receiving the cartridge and a closure sleeve for receiving the closure. The cartridge case and the cartridge as well as the closure sleeve and the closure form—each in pairs—a first and a second snap-in coupling for axially fixing one part on the other part. At least one of the two snap-in couplings is advantageously designed in such a way that it allows free movement in the circumferential direction, so that the components that are fixed axially to one another by it can rotate relative to one another in the circumferential direction. At least one of the two snap-in couplings is designed in such a way that the cartridge case and the closure sleeve can be fixed to one another and at the same time have a force converter which converts a rotation of the cartridge case relative to the closure sleeve into an axial force or an axial force component that pushes the closure sleeve off the cartridge case.

Solving the task with an application unit according to the invention results in several advantages at the same time. First of all, a sustainable solution is achieved due to the replaceable cartridge that includes the cartridge and the closure. At the same time, an optically very attractive appearance of the application unit can be maintained, in that, for example, in particular the outer surfaces of the cartridge case and/or closure sleeve can be designed to be attractive and possibly also to have a complex design. Due to the reusability of these parts in particular, complex production can be accepted here. On design elements that can serve for decoration, such as metallic appearance, screen printing, or the like be raised. At the same time, a haptically appealing material can be selected, because the sustainability results essentially from the exchangeable cartridge and the reusability of the sleeves with the haptically appealing material, and not, as would alternatively be conceivable, through pure material reduction. In summary, an inventive application unit enables a balance between sustainability, customer benefit, convenience and appearance.

The fact that the cartridge and closure are designed in one piece and integrally until opened and cannot be put back together after opening, i.e. cannot be closed again without the application unit, in particular without cartridge sleeve and closure sleeve, results in the further advantage that the user can not only buy and use the cartridge, but needs the entire application unit to use it. When the cartridge is opened, it can only be closed again in the application unit; the cosmetic compound would dry out outside of the application unit. The sealing sleeve and cartridge sleeve, which are connected to each other like a screw, can ensure that a seal takes place and the cosmetic mass does not dry out. This is the only way to ensure that the application unit is used as prescribed by the manufacturer, and in particular that it is also hygienic. In addition, it can be ensured that cosmetic mass does not accidentally leak.

ADVANTAGEOUS OPTIONS TO UNIFY THE INVENTION

Advantageously, the cartridge has a predetermined breaking point in the area of the transition between the cartridge and the closure that seals it, which is designed in such a way that the cartridge, after it has been inserted into the cartridge case and the closure sleeve and closed, the first time the closure sleeve is fully opened or unscrewed, Cartridge sleeve breaks open at the predetermined breaking point. It can thereby be ensured that the cartridge breaks open at precisely the desired point, which in particular makes it possible for the application unit to function well.

The snap-in couplings are preferably designed in such a way that they can be separated from one another without tools. This means that no tool has to be used when replacing an old cartridge with a new one, but the user can replace the cartridge without tools and thus almost anytime and anywhere, which is particularly useful when changing cartridges outside the home.

The snap-in coupling between the cartridge and the cartridge sleeve is expediently arranged in the area or directly on the distal front end (relative to the handle) of the cartridge. The snap-in coupling between the closure and the closure sleeve is expediently arranged in the area or directly on the proximal end (relative to the handle) of the closure. The cartridge sleeve expediently carries a pressure element on its distal end face, by pressing it in, preferably without tools, ideally with the pad of a finger, the locking coupling between the cartridge and the cartridge sleeve can be released without tools. Appropriately, the closure sleeve wears on her Proximal end face a pressure element, through which preferably tool-free pressing, ideally with the fingertip, the snap-in coupling between the closure and the closure sleeve can be released without tools. At this point, there is usually a straight or not very rounded surface, on which the pressure element has a good place and is also easy to operate. In addition, such a pressure element is easy to operate at this point, usually with the thumb, with the other fingers holding the cartridge case or the closure sleeve and the thumb only actuates the pressure element. The locking elements also keep the cartridge in a stable position, especially until the cosmetic mass is used up.

A coupling element of the snap-in coupling, preferably that associated with the cartridge and/or the closure, is advantageously a snap-in ring with a circumferential snap-in collar protruding in the radial direction. Such a locking ring with a locking collar is not only easy to produce, but also enables the closure or the cartridge to rotate relative to the closure sleeve or the cartridge sleeve in a simple manner.

The other coupling element of the locking coupling, preferably that associated with the cartridge case and/or the closure sleeve, is preferably formed by at least two locking arms which, in the coupled state, grip behind the locking ring assigned to them. A good snap-in coupling can thereby be made possible.

Conveniently, the pressure element is designed and, in the depressed state, approaches the locking arms in such a way that it forces the locking arms apart and thus disengages them Brings coupling partner, which is preferably designed in the form of a locking ring. As a result, a simple decoupling or release of the latching device can be achieved, in particular when little space is required inside the application unit.

The latching arms and the latching ring are advantageously designed in such a way that the latching arms can slide endlessly along the latching ring when the part carrying them rotates relative to the part carrying the latching ring, even in the latched state. As a result, the rotatability of the closure or the cartridge relative to the closure sleeve or the cartridge sleeve can be ensured in a simple manner.

Preferably, the force transducer is a thread or threaded portion. A screw cap has the advantage that the user can operate it easily. A screw cap can usually be operated intuitively. A screw closure can be operated in a reversible manner, usually over an extremely large number of repetitions, in particular mostly more frequently than, for example, a simple snap-in or click closure. Due to the frequent reusability, sustainability is given.

The force converter is expediently a mostly non-helical slide-on ramp, ideally a slide-on ramp that is effective in both directions of rotation. This ensures a good closure of the cartridge.

According to the invention, the replacement cartridge comprises a mass-carrying cartridge and a closure which is integrally located on the cartridge until it is opened and seals it. The cartridge and the replacement cartridge are expediently of identical construction.

It goes without saying that the features mentioned above and those still to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own, without departing from the scope of the present invention.

An advantageous embodiment of the invention is described below with reference to the figures. The advantageous exemplary embodiment is only intended to illustrate the invention without restricting it.

FIGURE LIST

• 1 shows an application element in a side view,
• 2 Figure 12 shows a cartridge until opened with a cartridge and a one-piece integral closure on the cartridge in a side view;
• 3 shows the cartridge after opening with the cartridge and the closure separated from the cartridge in a side view,
• 4 shows the application element in a closed state in a side view with partially transparent wall elements to make the inner workings of the application element visible,
• figure 5 shows the application element in an open state in a side view with partially transparent wall elements to make the inner workings of the application element visible,
• 6 shows a section of the application element in a perspective view with partially transparent wall elements to make the inner workings of the application element visible,
• 7 shows the application element in a closed state in a side view with partially transparent wall elements to make the inner workings of the application element visible,
• 8 Figure 12 shows a cartridge-to-break with a cartridge and a one-piece integral cartridge closure;
• 9 shows part of the application element in a closed state in a perspective view without a cartridge case,
• 10 shows a section of the application element in a perspective view with partially transparent wall elements to make the inner workings of the application element visible,
• 11 shows a section of the application element in a side view with partially transparent wall elements to make the inner workings of the application element visible,
• 12 shows the application element in a perspective view, the application element being shown in a closed state,
• 13 shows the partially transparent application element in a perspective view, the application element being shown in a closed state,
• 14 shows the partially transparent application element in a side view,
• 15 shows the partially transparent application element in a top view to visualize the position of the cut CC,
• 16 shows the application element in a sectional view along the section line CC 15 ,
• 17 shows the application element in a sectional view, the sectional view being an enlarged view of part of the 16 represents
• 18 shows the application element in a perspective view, the application element being shown in an open state,
• 19 shows the partially transparent application element in a perspective view, the application element being shown in an open state,
• 20 shows the application element in a sectional view,
• 21 shows the application element in a partial sectional view,
• 22 Figure 12 shows a perspective view of the cartridge until opened with a cartridge and a closure integral with the cartridge;
• 23 shows the cartridge shown partially transparent until opened with a cartridge and a one-piece-integral closure located on the cartridge in a perspective view,
• 24 Figure 12 shows a side view of the cartridge until opened with a cartridge and a closure integral with the cartridge;
• 25 shows the cartridge until opened with a cartridge and a one-piece-integral closure located on the cartridge in a top view to visualize the location of the cut CC,
• 26 shows the cartridge in a sectional view along the section line CC 25 ,
• 27 shows the cartridge after opening with the cartridge and the closure separated from the cartridge in a perspective view,
• 28 shows the partially transparent cartridge after opening with the cartridge and the closure separated from the cartridge in a perspective view,
• 29 shows the cartridge after opening with the cartridge and the closure separated from the cartridge in a top view to visualize the position of the cut HH,
• 30 Figure 13 shows the cartridge including a closure in a side view and including a cartridge in a sectional view along section line HH 29 ,
• 31 shows the cartridge after opening with the cartridge and the closure separated from the cartridge in a bottom view to visualize the position of the cut EE,
• 32 shows the cartridge in a sectional view along the section line EE 31 ,
• Figure 33 shows parts of the application element, such as the cartridge sleeve, the cartridge, the closure and parts of the closure sleeve in a side view,
• 34 shows parts of the application element, such as the cartridge sleeve, the cartridge, the closure and parts of the closure sleeve in a perspective view,
• Figure 35 shows parts of the application element, such as the cartridge sleeve, the cartridge, the closure and parts of the closure sleeve in a perspective view,
• Figure 36 shows parts of the application element, such as the cartridge sleeve, the cartridge, the closure and parts of the closure sleeve in a perspective view,
• 37 shows parts of the application element, such as the cartridge sleeve, the cartridge, the closure and parts of the closure sleeve in a perspective view,
• 38 shows parts of the application element, such as the cartridge sleeve, the cartridge, the closure and parts of the closure sleeve in a side view,
• Figure 39 shows parts of the application element, such as the cartridge sleeve, the cartridge, the closure and parts of the closure sleeve in a top view,
• figure 40 shows the application element with partially cut and removed parts for the schematic visualization of the interior of the application element in a perspective view,
• Figure 41 shows the application element with partially cut and removed parts for schematic visualization of the inner workings of the application element in a perspective view, wherein the Figure 41 an enlarged view of part of the figure 40 represents
• Figure 42 shows the application element with partially cut and removed parts for the schematic visualization of the inner workings of the application element in a side view,
• Figure 43 shows the application element with partially cut and removed parts for the schematic visualization of the interior of the application element in a top view,
• Figure 44 shows the application element with partially cut and removed parts for the schematic visualization of the interior of the application element in a bottom view for visualizing the position of the cut HH,
• Figure 45 shows the application element with partially cut and removed parts for the schematic visualization of the interior of the application element in a sectional view along the section line HH Figure 44 .

EXEMPLARY EMBODIMENT

the 1 shows an application unit 1. The application unit 1 includes a cartridge case 2 and a closure sleeve 3. How well in the Figures 4 and 5 and 12 to 21, the cartridge case 2 and the closure case 3 are in a closed state ( 4 and 12 to 17 ) of the application unit 1 firmly connected to each other, firmly screwed together in the exemplary embodiment. In an open state ( figure 5 and 18 to 21 ) of the application unit 1, the cartridge case 2 and the closure case 3 are separated from each other. A screw connection 4 is provided for fastening the closure sleeve 3 to the cartridge sleeve 2 . The screw connection 4 includes screw-like threads 4 'on the cartridge case 2 and nut-like threads 4 "on the closure sleeve 3, such as well in the Figures 18 to 20 can be seen. The screw connection 4 is used here as a force converter, in particular when unscrewing a force in the longitudinal direction of the application element 1. The use of the force in the longitudinal direction of the application element 1 is described further below.

Although this is not shown in the figures, it should be said that instead of a thread, a single or multiple, mostly non-helical slide-on ramp can also be provided as the force converter. Such a ramp can look like the one in the German utility model DE 202010011471 is described by the applicant in paragraphs 0030 and 0031 of the official publication with reference to the associated figures. The corresponding statements of said utility model are hereby made the subject of today's disclosure by reference to the utility model.

A cartridge 6 is arranged within the application element 1 . The cartridge 6 is arranged completely inside the application element 1 in the in Figures 1 and 4 such as Figures 12 to 17 shown closed state of the application element 1. The cartridge 6 is at least partially visible in figure 5 as in Figures 18 to 21 shown open state of the application element 1. The cartridge 6 includes a cartridge 7. In the cartridge 7 is a cosmetic mass, such as mascara, lip gloss, eyeliner, etc., stored. The cartridge 7 is therefore expediently designed in the form of a cylinder, in the form of a hollow cylinder for receiving the cosmetic mass in the cavity of the cylinder. In some cases, a taper is particularly advantageous, namely when the inner peripheral surface of the cartridge case forms a corresponding counter-cone and the cartridge and the cartridge case are matched to one another in such a way that they come to rest with no play or (slightly) spread apart relative to one another at that moment which the snapping occurs. In this way, freedom from play and, at the same time, particularly easy assembly and disassembly can be guaranteed in a particularly simple manner. Because as soon as the cone seat surfaces have been lifted from each other, the further disassembly process can take place almost without any friction.

The cartridge includes a bolt 8. Im in 2 such as Figures 22 to 25 shown, newly manufactured state of the cartridge 6, the closure 8 and the cartridge 7 are integrally formed in one piece. The cartridge 7 thus seals the closure 8 . A predetermined breaking point 9 is provided on the cartridge 6 . When impressing the force described above in the longitudinal direction of the application element 1, the force acts on the cartridge 7 and closure 8, with the action of this force Closure 8 is separated from the cartridge 7 at the predetermined breaking point 9. This occurs in particular when the closure sleeve 3 is unscrewed from the cartridge sleeve 2 for the first time. This ensures that the cartridge can always be broken without the risk of spilling or splashing due to a clumsy attempt to break open the cartridge. This is not the case outside of the invention. Not every consumer reads the operating instructions first. Opening is often attempted intuitively.

Figures 2 and 3 as well as the Figures 22 to 32 show the cartridge 6 outside of the application element 1. Figures 4 and 5 such as Figures 12 to 21 on the other hand, the cartridge 6 is shown in the installed state in the application element 1 . Figures 33 to 45 show the cartridge 6 when installed in the application element, wherein in the Figures 33 to 45 Parts of the application element 1 have been omitted for better visualization of the installation status of the cartridge 6 in the application element 1. In the figures referred to in this paragraph, it is easy to see that the closure 8 is accommodated by the closure sleeve 3 and that the cartridge 7 is accommodated by the cartridge sleeve 2 .

The cartridge sleeve 2 and the cartridge 7 form a first snap-in coupling 10. The first snap-in coupling 10 is used to axially fix the cartridge 7 on the cartridge case 2. The closure sleeve 3 and the closure 8 form a second snap-in coupling 11. The second snap-in coupling 11 is used for axial fixing of the breech 8 on the breech case 3.

The first locking coupling 10 and the second locking coupling 11 are of identical design in the exemplary embodiment. In the following, the mode of operation should therefore be explained using the in Figures 4, 5 , 6, 7 and 9 to 11 such as Figures 13 to 21 and Figures 40 to 42 second snap-in coupling 11 shown, the following explanations also apply mutatis mutandis to the first snap-in coupling 10 - this can be seen particularly well in the 17 , in which the first snap-in coupling 10 is shown enlarged, but which in particular has the same functionality and in particular the same components as the second snap-in coupling 11. The snap-in coupling 10, 11 is designed in such a way that it allows free movement in the circumferential direction in particular, so that the axial components fixed to one another, namely closure sleeve 3 and closure 8, can rotate relative to one another, in particular in the circumferential direction. This is necessary in order to be able to screw the cartridge case 2 to the breech case 3 when a cartridge 6 is newly inserted - in particular without damaging the cartridge 6. We will now describe the in 4 When the fired application unit 1 shown is opened for the first time after inserting a new, still integrally sealed cartridge 6, the force converter converts a rotation of the cartridge case 2 relative to the breech case 3 into an axial force or an axial force component, which pushes the breech case 3 off the cartridge case 2, in particular when the closure sleeve 3 is first fully opened in relation to the cartridge sleeve 2. The cartridge 6 is broken at the predetermined breaking point 9, as a result of which the interior of the cartridge 7 opens. The cosmetic mass is thus released and can be applied by a user.

However, the axial force is also used in "daily" use. This is because the axial force serves to always be able to close a cartridge 6 that has been opened and that is arranged in the application unit 1 . The axial force not only presses the closure sleeve 3 onto the cartridge case 2, but preferably also the closure 8 onto the cartridge 7. Preference is given to a, in particular conical, in figure 5 drawn contact surface 5 on the cartridge case 2 is provided. The, in particular, conical, contact surface 5 acts here like a seal against the closure sleeve 3. It goes without saying that the, in particular, conical contact surface 5 is arranged in a further exemplary embodiment on the closure sleeve 3, and thus in particular not on the cartridge case 2 can be. The cartridge 7 seals against the closure 8 and the cartridge sleeve 2 seals against the closure sleeve 3 so that no cosmetic mass can escape from the application unit 1 . As a result, the cosmetic mass does not dry out. In particular, there is a largely airtight closure.

The closure 3 preferably comprises an application element 12 which serves to apply the cosmetic material to the user. in 3 In the shown open state of the application unit 1, the application element 12, which is designed in particular integrally and expediently in one piece on the closure 3, protrudes in the axial direction. The application element 12 is expediently a tube, a brush or the like. in 2 In the closed state of the application unit 1 shown, the application element 12 protrudes into the interior of the cartridge 7 and is in particular wetted by the cosmetic composition.

The functioning of the snap-in coupling 10, 11 will be explained in more detail below. In the exemplary embodiment, particular focus was placed on the fact that the snap-in couplings 10, 11 are designed in such a way that they can be separated from one another without tools. In a further exemplary embodiment, it is of course conceivable that a tool may be required.

In the following, for the sake of simpler expression, the functions of the snap-in couplings 10, 11, which are essentially structurally identical, are to be described with reference to the function of the second snap-in coupling 11. The only significant difference between the two snap-in couplings 10, 11 is that the first snap-in coupling 10 is arranged between the cartridge 7 and the cartridge case 2 in the area or directly on the distal end (relative to the handle) of the cartridge 2 and/or that the second snap-in coupling 11 is arranged between the closure 8 and the closure sleeve 3 in the area or directly at the proximal end (relative to the handle) of the closure.

The cartridge case 2 carries at its distal end in the Figures 4, 5 and 7 as well as in the 13 , 14, 16, 17 , 20, 21 , 42 and 45 shown first pressure element 12. The first pressure element 12 can preferably be pressed without tools, for example with the fingertip or the fingertip, preferably the thumb. By pressing in the first pressure element 12, the first locking clutch 10 is released. As a result, the cartridge 7 is released from the cartridge case 2 and can be removed in order to create space for a new cartridge 6, in particular for a replacement cartridge.

The closure sleeve 3 and the closure 8 are designed correspondingly. The closure sleeve 3 carries at its distal end in the Figures 4 to 7 and 9 to 11 such as 13 , 14 , 16 , 18 to 21 and 33 to 45 shown second pressure element 13. The second pressure element 13 can preferably be pressed without tools, for example with the fingertip or the fingertip, preferably the thumb. By pressing the second pressure element 13, the second locking clutch 11 solved. As a result, the closure 6 is released from the closure sleeve 3 and can be removed in order to create space for a new cartridge 6, in particular for a replacement cartridge.

The snap-in coupling 12, 13 comprises two in 6 and 8 to 11 shown latching elements 14, 15. A coupling element 15 of the two latching elements, preferably the cartridge 7 and/or the closure 8 associated with the coupling element 15 (cf. 8 such as Figures 22 to 32 ) is designed in the form of a locking ring with a circumferential locking collar protruding in the radial direction. The locking collar is preferably formed at the outer end of the cartridge 6 and closes the cartridge 6 off.

The other coupling element 14 of the snap-in coupling, preferably the coupling element 14 assigned to the cartridge sleeve 2 and/or the closure sleeve 3 (cf. 6 , 9 to 11 such as 17 and 41 ), is formed by at least two latching arms 16 which, when coupled, grip behind the latching ring 15 assigned to them. This fully coupled state is in 11 , 17 and 41 shown. An at least partially or even completely unlocked state is in the 6 and 9 shown.

Good at 11 and 17 the shape of the latching arm 16 can be seen. The latching arm 16 has a latching surface 17' which engages behind the latching ring 15 and rests against it in the latched state. The latching arm 16 has an opening surface 18 which serves to allow the pressure element 12, 13 to press against the opening surface 18 in order to bend or move the latching arm, pivot it or the like to such an extent that the latching connection is released. The pressure element 13 is designed and approaches the locking arms 16 in the depressed State so that it pushes the locking arms 16 apart and disengages it from its coupling partner, which is preferably designed in the form of the locking ring 15.

In the exemplary embodiment, the latching arms 16 and the latching ring 15 are designed in such a way that the latching arms 16 can slide endlessly along the latching ring 15 when the part carrying them rotates relative to the part carrying the latching ring 15 , even in the latched state. This is particularly advantageous when inserting a new (replacement) cartridge 6, namely when screwing in the breech ring 3 onto the cartridge case 2 for the first time, because the cartridge 6 can move freely in terms of rotation.

In the exemplary embodiment, the latching arms 16 are on an in 6 and 9 latching unit 17 shown, in particular in one piece integrally arranged. The locking unit 17 comprises a cylindrical or ring-shaped unit 18. In the exemplary embodiment, the ring-shaped unit 18 ends flush with the closure 8, in particular with the locking ring 15 arranged on the closure 8--as already mentioned several times, the same applies to the cartridge. The latching unit 17 comprises the two latching arms 16. The latching unit 17 comprises two latching hooks 19. Each of the two latching hooks 19 comprises two latching fingers 20. The latching hooks 19 and the latching fingers 20 latch with the closure sleeve 3 and with the cartridge sleeve 2 the latching unit 17 latches with the closure sleeve 3 or with the cartridge sleeve 2 and thus the coupling elements 14 are positioned accordingly. The latching unit 17 is expediently latched firmly to the closure sleeve 3 or to the cartridge sleeve 2, in particular not rotatably.

The cartridge 6 can be replaced with a spare cartridge. The replacement cartridge is expediently constructed in the same way as the cartridge 6 . The replacement cartridge comprises a mass-carrying cartridge and a closure which is integrally located on the cartridge until it is opened and seals it, in particular for replacing the cartridge in the application element according to one of claims 1 to 12.

For the sake of completeness, it should be mentioned that cartridge 6 and replacement cartridge mean identical versions of cartridge 6. The difference is simply that the replacement cartridge replaces the cartridge 6, particularly after the cartridge 6 has been partially or completely emptied of the cosmetic mass.

Claims (13)

Application unit (1) with a cartridge (6) consisting of a mass-carrying cartridge (7) and a closure (8) which is integral to the cartridge (7) until it is opened and seals it, as well as a cartridge sleeve (2) for receiving the cartridge (7) and a closure sleeve (3) for receiving the closure (8), wherein the cartridge case (2) and the cartridge (7) and the closure sleeve (3) and the closure (8) - in pairs - a first or a second snap-in coupling (10, 11) for axially fixing one part on the other part, characterized in that at least one of the two snap-in couplings (10, 11) is designed in such a way that it allows free movement in the circumferential direction in particular, so that the axial components fixed to one another can rotate relative to one another, in particular in the circumferential direction, and that the cartridge case (2) and the closure sleeve (3) can in turn be fixed to one another and at the same time have a force converter which ei ne rotation of the cartridge case (2) relative to the closure sleeve (3) into an axial force or an axial force component, which pushes the closure sleeve (3) off the cartridge case (2). Application unit according to Claim 1, characterized in that the cartridge (6) has a predetermined breaking point (9) in the region of the transition between the cartridge (7) and the closure (8) sealing it, which is designed in such a way that the cartridge (6) after their insertion into the cartridge case (2) and the closure case (3) and the closure of which breaks open at the predetermined breaking point (9) the first time the closure sleeve (3) is completely opened in relation to the cartridge sleeve (2). Application unit according to Claim 1 or 2, characterized in that the locking couplings (10, 11) are designed in such a way that they can be separated from one another without tools. Application unit according to one of the preceding claims, characterized in that the snap-in coupling (10) is arranged between the cartridge (7) and the cartridge sleeve (2) in the area or directly on the (relative to the handle) distal front end of the cartridge (7) and/or that the locking coupling (11) is arranged between the closure (8) and the closure sleeve (3) in the area or directly on the proximal end (relative to the handle) of the closure (8). Application unit according to one of the preceding claims, characterized in that the cartridge sleeve (2) carries a pressure element (12) on its distal end face, by pressing it in, preferably without tools, ideally with the pad of a finger, the snap-in coupling (10) between the cartridge (7) and of the cartridge sleeve (2) can be released without tools. Application unit according to one of the preceding claims, characterized in that the closure sleeve (3) carries a pressure element (13) on its proximal end face, by pressing it in, preferably without tools, ideally with the pad of a finger, the snap-in coupling (11) between the closure (8) and the locking sleeve (3) can be loosened without tools. Application element according to one of the preceding claims, characterized in that a coupling element of the snap-in coupling (10, 11), preferably that associated with the cartridge (7) and/or the closure (8), is a snap-in ring (15) with a circumferential, radial direction protruding locking collar is. Application element according to one of the preceding claims, characterized in that the other coupling element of the locking coupling (10, 11), preferably that associated with the cartridge sleeve (2) and/or the closure sleeve (3), is formed by at least two locking arms (16) which when coupled, reach behind the locking ring (15) assigned to them. Application element according to one of the preceding claims, characterized in that the pressure element (13) is designed in such a way and approaches the latching arms (16) in the depressed state in such a way that it presses the latching arms (16) apart and thus disengages them from their coupling partner, which is preferably designed in the form of a locking ring (15). Application element according to one of the preceding claims, characterized in that the latching arms (16) and the latching ring (15) are designed in such a way that, when the part carrying them rotates relative to the part carrying the latching ring (15), the latching arms (16) also locked state can slide along the locking ring (15) endlessly. Application element according to one of the preceding claims, characterized in that the force converter is a thread (4, 4', 4") or a thread section (4, 4', 4"). Application element according to one of Claims 1 to 10, characterized in that the force converter is a mostly non-helical slide-on ramp, ideally a slide-on ramp effective in both directions of rotation. Replacement cartridge (6) consisting of a mass-carrying cartridge (7) and a closure (8) which is integral to the cartridge (7) until it is opened and seals it, in particular for replacing the cartridge (6) in the application element (1) according to one of the Claims 1 to 12.

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