EP3953053A1

EP3953053A1 - Dispenser for compounds in paste form

Info

Publication number: EP3953053A1
Application number: EP20722473.4A
Authority: EP
Inventors: Sabine Göttke
Original assignee: RPC Bramlage GmbH
Current assignee: RPC Bramlage GmbH
Priority date: 2019-04-09
Filing date: 2020-04-08
Publication date: 2022-02-16
Anticipated expiration: 2040-04-08
Also published as: DE102020109821A1; CN113874123A; WO2020208073A1; US20220176397A1; US11679402B2; ES2951156T3; BR112021019294A2; EP3953053B1; PL3953053T3; CN113874123B

Abstract

The invention relates to a dispenser (1) for compounds (M) in paste form, consisting of a storage volume (2) with a bounding part (5) that can move conjointly when drawing from the storage volume (2), and a head piece (4) that is guided relative to the storage volume (2), wherein between the head piece (4) and the storage volume (2) there is formed a discharge chamber (19) with an inlet valve (43) and an outlet valve (41), wherein the discharge chamber (19) is additionally assigned a discharge channel (23) with a discharge opening (24), and wherein in order to resiliently return the head piece (4) in the instance of a movement from a starting position to an actuation position there is provided a spring element that is active between the storage volume (2) and the head piece (4), which spring element at the same time forms in part a bounding wall (29) of the discharge chamber (19) and has a lower ear-shaped plug projection (38) and an upper retaining profile, wherein moreover in the case of the spring element (22) being designed in one piece with the retaining projection (30) and the plug projection (38) with respect to the stated cross section in the starting position the spring element (22) is designed as a leg (26) extending so as to connect to the plug projection (38), which leg transitions into the retaining projection via an upwardly curved portion (27). In order to configure a dispenser of the type in question in a manner that is further improved both functionally and in respect of expedient assembly, it is proposed that the retaining profile be designed as a retaining projection (30) that is larger in terms of cross section than the leg (26), with an upper projection base (35) which is enclosed in the retaining recess and has a closed cross section.

Description

description

Dispenser for pasty masses

Field of technology

[0001] The invention relates to a dispenser for pasty masses, consisting of a storage space with a delimitation part which moves with the suction from the storage space and a head piece guided relative to the storage space, an output chamber being formed between the head piece and the storage space , with an inlet valve and an outlet valve, wherein an output channel with an output opening is also assigned to the output chamber and wherein a spring element acting between the storage space and the head piece is provided for springing back the head piece when it moves from an initial position into an actuating position, wel ches at the same time partially forms a boundary wall of the dispensing chamber and, viewed in a cross section based on a drawing in which the head piece is arranged vertically above and the storage space vertically below and a longitudinal center axis of the dispenser is shown as a line, a lower tubular plug kvorsprung, which is sealingly received in an adjoining, adapted shaped plug-in receptacle, and has an upper mounting recess which is sealingly received in a holding approximately receptacle of the head piece, further with a one-piece design of the spring element with the mounting projection and the plug-in projection based on the said cross-section in the starting position the spring element is designed as a leg which extends in connection with the plug-in projection and which merges into the retaining projection via an upward curvature. State of the art

Dispensers of the type in question are used in particular for portioned dispensing of pasty masses, further for example. To dispense cream, such as further, for example. Care or toothpaste, with a movable delimitation part, for example in Form of a follower piston, can be provided. The mass is dispensed in portions by moving the head piece relative to the storage space. In this context, reference is made, for example, to EP 2 747 893 B1 (US Pat. No. 9,096,362 B2). From this patent specification a dispenser of the type in question is known, in which a spring element mounted between the headpiece and the storage space is tensioned by user-operated lowering of the head piece to dispense the mass. When the pressure load acting by the user on the headpiece ceases to exist, the headpiece is moved back into the starting position as a result of the previously built up restoring force of the spring element. The spring element is U-shaped both in the starting position and in the actuating position with reference to a vertical section or with reference to a cross section based on a drawing in which the head piece is arranged vertically above and the storage space below Section which extends freely in a between the storage space and a circumferential wall of the head piece. Such a donor is also known, for example, from US Pat. No. 7,819,290 B2.

From EP 2 164 645 B1 such a dispenser is known, in which the spring element is formed belgarhg and wherein a lip section is formed on the head piece side, which forms the outlet valve in cooperation with the spring element. Summary of the invention

Based on the above-described prior art, the invention is concerned with the task of designing a dispenser of the type in question in a functional and further improved manner with regard to inexpensive assembly. A possible solution to the problem is given according to a first inventive idea in a dispenser, in which it is based on the fact that the mounting recess is designed as a cross-section larger than the leg cross-section, a total of circular mounting projection, with egg nem upper, in Bracket receptacle lying projection base, which has a closed cross section.

As a result of the proposed embodiment of the spring element, a favorable assembly of the spring element in the storage space-side plug receptacle and / or the head piece on the spring element in the area of the holder receptacle can result. Due to the enlarged cross-section of the retaining projection, in particular of the projection base, which is also preferably solid in cross-section, compared to the leg essentially providing the spring properties of the spring element, an arrangement of the retaining projection in the retaining recess is stable and preferably true to position, even in normal use of the dispenser reachable. In addition, a reliable seal between the bracket and the bracket recess can thereby be achieved.

The cross-sectional dimension of the holding projection can correspond, for example, to 1.5 to 5 times, for example 2 to 3 times the cross-sectional dimension of the leg viewed in the same vertical sectional plane. It can also provide an advantageous support for self-discovery of the spring element-side retaining projection in the headpiece-side Hal sion receptacle and / or the spring element-side plug projection in the plug-in receptacle of the storage space in the course of assembly. This may be due to the fact that, as a result of the essentially horizontal leg alignment of the spring element in the starting position, which can also correspond to the assembly position, such a high level of basic stability of the spring element can be achieved that this enables easier assembly.

In addition, according to the proposed configuration, in particular the described cross-sectional configuration of the spring element, a total of plate-like, with a circumferential, in the described cross-section provided a vertically oriented edge design result. This can further lead to improved usability of the dispenser, in particular to improved haptics during operation. The selected cross-sectional configuration of the spring element can result in a quasi-defined pressure point which the user can feel, which pressure point must be overcome in order to move the head piece from the starting position into the actuating position. A dispenser with a comparatively small installation space in the area of the head piece can also be achieved through the proposed configuration. The plug-in projection can merge into the essentially horizontally extending leg via a radially outward curvature, for example, and preferably, an approximately 90 ° curvature, which in turn radially outward via the upward curvature, for example, such as also preferably, about 90 ° curvature, runs into the upward leg.

According to a preferred embodiment, the spring element can consist of a rubber-like, resilient plastic, for example Resilient elastomer, further in particular made of a silicone material _· This material offers sufficient resilience for the resilient return of the head piece from the actuation position to the starting position. The spring element can be manufactured as a plastic injection-molded part.

Further features of the invention are explained below, also in the description of the figures, often in their preferred assignment to the subject matter of claim 1 or to features of further claims. However, they can also be assigned to only individual features of claim 1 or the respective further claim, or in each case regardless of meaning.

Thus, according to a further embodiment, the upward leg can merge into the holding projection via a hinge-like taper. The tapering can be given as a result of the formation of an area that is connected to it, for example the upward leg or the transition area, which is thinner. There can be such a material taper, which can offer a hinge-like effect between the upward leg and the transition area. In the area of the hinge-like taper, a material thickness can be given that is approximately 0.3 to 0.8 times, for example, approximately 0.5 times the thickness of the subsequent spring element areas, such as the transition area and / or the Upward leg, can correspond.

The retaining projection can form a projection leg which projects vertically downward in relation to a transition area between the upward leg and the retaining projection and which, starting from the transition area, is based on the vertical longitudinal center axis of the dispenser extends radially outward to the upward leg. In this case, the projection leg can optionally serve, together with the retaining projection, for the retaining reception in the retaining reception of the head piece. In this case, the jump ahead leg according frictional a possible embodiment in the region of a radially outer peripheral surface of the resultant and / or positively usammenwirken with the bracket jig _Z.

In this case, the holder receptacle of the head piece can be designed as a vertically downwardly open groove according to a possible embodiment for receiving the holding projection - and possibly the further projection leg. This groove can be essentially U-shaped in accordance with the cross-section described at the outset, with a U-opening pointing vertically downwards through which in particular the retaining projection of the spring element dips into the retaining receptacle.

[0015] The holder receptacle can furthermore have a groove base which, like a ceiling, closes the holder receptacle vertically upwards. In the case of an essentially U-shaped configuration of the groove or the mounting receptacle, this groove base is the U-web connecting the U-legs, which essentially run parallel to one another in cross-section.

Starting from the transition area, the bracket projection can extend vertically upwards. The hinge-like tapering can accordingly be given according to one possible embodiment in a transition from the holding projection into the projection leg. In this case, in a further embodiment, the holding projection as such can have a greater extent, viewed in the radial direction, than in the same direction of the projection legs. The relevant radial thickness of the holding device jump can correspond to about 1.5 to about 2 times the radial thickness of the projection leg.

The retaining projection can also engage in the circumferential groove which is open vertically downwards.

In a further possible embodiment, the projection leg and the retaining projection can jointly form a circumferential outer wall of the spring element for interaction with a groove inner surface of the retaining receptacle.

The groove can have two side walls of approximately equal length in the vertical direction, based on a cross section. In this regard, a configuration with sides of different lengths in the vertical direction is preferred. In one possible embodiment, the radially outer side wall, starting from the groove base or the U-web, can have a shorter extension length vertically downwards than the radially inner side wall. However, an embodiment is preferred in which a radially inner side wall with respect to the central axis is made shorter than the radially outer side wall. The vertical extent of the longer side wall, starting from the groove base, can be approximately 1.5 to approximately 2.5 times, further approximately 2 times the vertical extent of the shorter side wall.

According to a further possible embodiment, the radially outer side wall can protrude vertically below the projection leg. Correspondingly, the projection leg can, in particular with regard to its radially outer circumferential surface, possibly rest over the entire surface of the facing inner side of the radially outer side wall. According to one possible embodiment, the radially inner side wall can end in the transition area with regard to its intercalated extent. In such a configuration, the hinge-like tapering of the radially inner side wall, as is also preferred, is free. In particular, the radially inner side wall is preferably not an obstacle to mobility in the area of the hinge-like taper.

A wall thickness measured in the radial direction of the plug projection cooperating with the plug receptacle of the storage space can correspond in one possible embodiment to about 1.5 times or more the greatest thickness in the region of the horizontally extending leg of the spring element. Thus, the wall thickness of the plug-in projection in the radial direction can correspond to about 2 times to about 3 times the largest thickness measured in the starting position in the vertical direction in the area of the leg. The plug-in projection can also have an axial length, starting at a lower edge of the horizontally extending leg in the starting position, which is equal to or greater than the axial extension of the spring element, starting from the mentioned lower edge of the horizontally extending leg up to the axial upper end of the bracket before jump. Thus, the plug-in projection can have an axial length which can be approximately 1.0 to 2 times, for example, approximately 1.1 to 1.5 times the axial extent of the spring element.

[0024] In addition, a valve section for forming the outlet valve can be integrally formed on the holding projection. The valve section can, for example, protrude freely from a flap over a vertically upper end of the holding projection, in order to close the discharge chamber with the discharge channel connecting discharge opening of the dispensing chamber. With the lowering of the head piece and the associated increase in the pressure prevailing in the dispensing chamber, the valve section is pivoted out of its sealing position like a lap to release the outlet opening. As the application of pressure decreases at the end of the lowering movement of the headpiece, the valve section falls back into the sealing position due to its elastic resilience.

In a further possible embodiment, the valve section can also be formed over a larger circumferential section of the holding projection than corresponds to a largest free opening dimension in the circumferential direction of an outlet opening of the output channel adjacent to the holding projection. In such an embodiment, the valve section can be made larger in its circumference than is necessary for the valve-like interaction with the output channel. This offers assembly-related advantages in particular. Due to the circumferential direction preferably given over the width of the valve section, no exact orientation is necessary in the course of the assembly of the holding projection with the valve section having dispenser part. Rather, it may be sufficient in this case to arrange the related dispenser part so relative to the output channel, that a portion of the valve portion like a valve to the output channel or the off-opening can usammenwirken _Z.

Thus, the valve section can, for example, extend over a third or more of the circumference of the holder before the jump, further, for example, over half or more up to three quarters or two thirds or more of the circumference. According to a preferred embodiment, the valve section can be designed to be uniform and closed in an annular manner. This offers tet a free orientation of the valve portion having dispenser part in the course of assembly.

The head piece of the dispenser that receives the retaining projection can form a groove, in particular for receiving the valve section in the circumferential direction outside the dispensing channel. The preferably uniform and closed ring-shaped circumferential valve section emerges from the output channel on both sides in the circumferential direction and is taken up outside of the output channel in the groove-like receptacle described above.

[0029] In a further possible embodiment of the Halterungsvor can jump directly or indirectly with a lip portion of the headpiece _Z usammenwirken, for forming the exhaust valve. The lip section can be a head piece part designed to be deflectable under pressure load, for example, pivotable. Thus, the lip section can be designed to be elastically divisible according to the appropriate choice of material and / or material thickness.

In this case, the lip section can extend in a cantilevered manner radially outward in relation to the cross section, starting from a radially inner mounting area. The lip section can further be designed as a cantilevered flat part, further possibly in the form of a uniform and closed ring-shaped flat part.

According to a preferred embodiment, the lip portion can be formed to run essentially horizontally in cross section. Such a horizontal alignment can be given in particular in a pre-assembly state. In cooperation with the bracket in front of the jump to form the outlet valve, the lip section can be design also in the valve closed position have an orientation aligned along a horizontal plane, for example. Including an acute angle of a few degrees, for example. From 1 ° to 5 °, further for example. 2 ° or 3 °.

In the valve-open position, the relevant acute angle to a horizontal plane extending transversely to the longitudinal center axis of the dispenser can be enlarged. In the valve open position, for example, an acute angle of up to 10 ° or up to 20 ° can be set.

[0033] The lip portion can usammenwirken of the mounting projection _Z with a vertically upwardly exposed support surface. In this regard, a direct interaction between the support surface of the holding projection and a facing surface of the lip portion can be given.

In a further preferred embodiment, an annular projection can be formed on the end face, on which the lip section rests in a sealing manner in the valve-closed position, so that a point support of the lip section can result in a cross section.

The valve formation with the lip portion resting on the head piece or on the annular projection of the head piece can, as also preferably, be given over the entire circumference of the holding projection. Correspondingly, when a pressure load in the output chamber is exceeded, the lip section can at least partially lift off the retaining projection or the annular projection of the retaining projection, viewed over the circumference, in order to enable the portioned mass to exit from the output chamber into the output channel. The In this case, lip section in several places over the circumference regularly or irregularly distributed from the retaining projection or the annular projection, but also completely over the entire circumference with uniform or uneven vertical spacing from the sealing seat.

The lip portion can be formed on a plug-in part arranged in the head piece. The plug-in part can initially be present as a loose part in the course of assembly. Furthermore, such a plug-in part, as well as the other parts of the dispenser given before, can be made in the plastic injection molding process.

In a further embodiment, the lip section can merge radially on the inside into a circumferential ring section protruding vertically downwards relative to the cross section of the lip section. Such a Ringab section can be suitable to reduce the volume of the dispensing chamber in the depressed state of the head piece. Thus, such a ring section can, for example, dip into a U section of the leg of the spring element, which extends essentially vertically in the unloaded position, and which is set in the depressed state of the head piece, and essentially fill this bead-like space.

The lip section or the plug-in part having the lip section can consist of a hard plastic. For example, PE or TPE can be used in this regard, as may also be used with regard to the further dispenser parts, preferably with the exception of the spring element.

In a further embodiment, the horizontally extending leg can be formed in one piece with the inlet valve. The inlet valve can thereby also act like a flap, but preferably more or less like a plug with a corresponding inlet opening between the storage space and the dispensing chamber.

Thus, according to a further preferred embodiment, a one-piece and materially uniform embodiment of the spring element together with the inlet valve and the outlet valve as well as the holding projection, the projection leg and the plug-in projection can result.

The head piece can be guided in part with a limit stop on an insert facing the storage space. This limit stop concerns before given to the headpiece basic position, in which there is no actuation of the dispenser, and / or the headpiece lowered position, for dispensing the mass. The guide and / or limit stop can, as is also preferred, be provided by subregions which are optionally formed directly on the head piece and / or the insert part.

[0042] Thus, according to a preferred embodiment, a guide and a limit stop can be assigned to different components of the head piece and the insert part. Components of the head piece and the insert part can preferably only serve to guide the head piece on the insert part, and other components of the head piece and the insert part preferably only serve as the limit stop. This can result in advantages in particular with regard to the manufacture of the dispenser, further in particular with regard to the assembly of the head piece on the insert part. Thus, through the local separation of the guide and the limit stop, for example, in the course of assembly, a guide in the axial direction can already be achieved before the components for the limit stop are brought into a mutually effective position. Correspondingly, in a possible embodiment, the insert part can have a first cylinder section which interacts with a second cylinder section of the head piece for guidance. This can, as is also preferred, be circular-cylindrical cylinder sections, more preferably concentrically aligned with one another, with the first cylinder section of the insert part being arranged, for example, radially inward with respect to the second cylinder section of the head piece with respect to the longitudinal center axis of the dispenser. The reverse arrangement is also possible in this regard, please include. [0044] The insert may have a serving for the latching with the third cylinder space portion can also be employed for Anschlagbe limitation to a fourth cylindrical section of the headpiece _Z ken usammenwir. Here too, for example, the fourth cylinder section of the head piece can be arranged radially on the inside with respect to the longitudinal center axis of the dispenser and the third cylinder section of the insert part correspondingly radially on the outside of the fourth cylinder section of the head piece. The reverse arrangement is also possible here in this regard.

The third and fourth cylinder sections of the insert part and of the head piece, which serve to limit the stop, can, according to a preferred embodiment, be arranged radially outwardly opposite the first and second cylinder sections used for the guide. Here, too, a reversed arrangement is possible, so that the limit stop can be arranged radially on the inside with respect to the guide.

[0046] The head piece can be guided in a stop-limited manner on an insert part facing the storage space. This limit stop concerns before given the headpiece basic position The ranges or value ranges or multiple ranges specified above and below also include all intermediate values with regard to the disclosure, in particular in 1/10 steps of the respective dimension, possibly also dimensionless. For example, the statement 1.1 to 1.5 times also includes the disclosure of 1.2 to 1.5 times, 1.1 to 1.4 times, 1.2 to 1.4 times etc. This disclosure can on the one hand serve to delimit a specified range limit from below and / or above, but alternatively or additionally to reveal one or more singular values from a respective specified range.

BRIEF DESCRIPTION OF THE DRAWINGS [0048] The invention is explained below with reference to the attached drawing, which, however, merely represents exemplary embodiments. A part that is only explained with reference to one of the exemplary embodiments and is not replaced by another part in a further exemplary embodiment due to the special features highlighted there, is thus described as an existing part in any case for this further exemplary embodiment. The drawing shows:

Fig. 1 in a vertical section a dispenser of the question

Kind with a movable limiter part in the storage space in the form of a follower piston; FIG. 2 shows an illustration corresponding to FIG. 1, the mitbe movable delimiting part being formed by a compressible bag which also forms the storage space; FIG.

3 shows the enlargement of the area III in FIG. 1 after removing a cover cap; 4 shows the enlargement of the area IV in FIG. 3;

5 shows a representation corresponding to FIG. 3, but after relocation of a head piece from the starting position according to FIG. 3 into an actuating position;

6 shows a spring element arranged between the storage space and the head piece in a perspective individual illustration;

7 shows the spring element in a further perspective illustration;

8 shows a sectional representation corresponding essentially to FIG. 3, relating to a second embodiment;

9 shows the embodiment according to FIG. 8, after the displacement of the

Head piece in an actuating position;

FIG. 10 shows a further sectional illustration corresponding to FIG. 3, relating to a third embodiment;

11 shows the enlargement of the area XI in FIG. 10;

FIG. 12 shows the embodiment according to FIG. 10 in the actuating position; FIG.

13 shows an illustration according to FIG. 1, but relating to a fourth

Embodiment in the starting position;

14 shows the enlargement of the area XIV in FIG. 13; 15 shows the embodiment according to FIG. 13 in the actuation position;

16 shows the spring element of the fourth embodiment in an individual perspective view; 17 shows the spring element of the fourth embodiment in a perspective sectional view;

18 shows a further illustration corresponding to FIG. 1, relating to a fifth embodiment in the starting position;

19 shows the enlargement of the area XIX in FIG. 18; 20 shows the embodiment according to FIG. 18 in the actuation position;

21 shows the spring element of the fifth embodiment in a perspective individual representation;

22 shows the spring element of the fifth embodiment in a perspective sectional illustration;

23 shows the spring element in a perspective illustration, a sixth

Concerning embodiment.

Description of the embodiments

Is shown and described, initially with reference to Figures 1 and 2, a dispenser 1 in particular for dispensing a pasty mass M. The dispenser 1 is essentially composed of a mass container 3 delimiting a storage space 2 and a head piece 4 that can be displaced relative to this mass container 3.

In a preferred embodiment, as is also shown, the dispenser 1 is designed to be rotationally symmetrical with a central central axis x.

The head piece 4 can preferably be displaced along the central axis x relative to the mass container 3 or the storage space 2.

As further illustrated in the exemplary embodiment according to FIGS. 1 to 7, a delimiting part 5 which can move at the same time in the form of a follower piston 6 can be provided in the storage space 2. Alternatively, the limiter part 5 according to the illustration in FIG. 2 can also be formed by a compressible bag 7 which simultaneously forms the storage space 2.

In the unused position of the dispenser 1 according to the illustrations in FIGS. 1 and 2, the head piece 4 can, as is also preferred, be covered by a closure cap 8. This can have an outer diameter that corresponds to the outer diameter of the mass container 3.

The mass container 3 can have a housing base 9. The opening of the mass container 3, which points vertically upwards in the illustrations, is covered by an insert part 10 which, in the usual operating state of the dispenser 1, is non-detachable, at least not detachable without tools, connected to the mass container 3, in particular snap-connected.

The mass M is in the exemplary embodiment shown in FIG. 1 by the follower piston 6 and the insert part 10 and by the circumferential wall of the mass container 3 limited supply space 2 be stocked. With an arrangement of a bag 7 as shown in FIG. 2, the mass M is received in the storage space 2 delimited by the bag 7 on the bottom and circumferential side and above by the insert part 10. The insert part 10 can centrally, starting from a conical region 11, form a plug-in receptacle 12 extending approximately into the opening plane E of the mass container 3. This can, as also shown, initially a central, concentric to the central axis x circumferential pot-like elevation aufwei sen, with a circumferential pot wall 13 and along the upper edge of the pot wall 13 adjoining, transversely to the central axis x from the pot top 14 14, as is also preferred, can be centrally penetrated by an inlet opening 15.

Concentrically to the pot wall 13 and at a radial distance from here extends a receiving wall 16 encompassing the pot wall 13. Its vertically upwardly pointing circumferential end face extends at least approximately in the plane given by the upwardly pointing surface of the pot top 14.

The insert 10 formed in this way can be fastened to the mass container 3, in particular in the area of the opening edge of the mass container 3, in a latching manner. In addition, the insert part 10 can be used to latch the closure cap

Be designed to 8, wherein the insert part a via the aperture plane E of the ground tank 3 protruding, circumferential vertical collar 10 may have 17 which can usammenwirken 8 _Z in the cap closed position with a circumferential lower edge region of the closure cap. The vertical collar 17 can also serve to guide the head piece 4 in the vertical direction. For this purpose, the vertical collar 17 can interact with an outer wall side of an annular wall section 18 of the head piece 4 that is vertically aligned with reference to the illustrations.

As a result of the above-described guidance, the head piece 4 can be displaced relative to the storage space 2 in the vertical direction along the central axis x, this under appropriate guidance, the vertical displacement being limited to both vertically downwards and vertically upwards. A dispensing chamber 19 is provided between the storage space 2 and the head piece 4 for the portioned dispensing of mass M. In the starting position according to FIGS. 1 to 4, this extends essentially above the plug-in receptacle 12 of the insert part 10.

The dispensing chamber 19 is delimited circumferentially to the central axis x at least over a vertical section by a radially inner side wall 20 of the head piece 4, as well as on the ceiling side by a cover section 21 which is formed in one piece and made of the same material with the head piece 4 .

A further circumferential delimitation that adjoins the side wall 20 essentially vertically downwards, as well as a vertically lower delimitation of the dispensing chamber 19, is provided by a spring element 22.

The head piece 4 also has an output channel 23 with an output opening 24. The dispensing channel 23 can be connected to the dispensing chamber 19 via an outlet opening 25 formed in the side wall 20. In the course of a pumping movement in which the head piece 4 is moved along the central axis x with a reduction in the volume of the dispensing chamber 19 in the direction of the storage space 2, the mass M held in portions in the dispensing chamber 19 is dispensed through the outlet opening 25 and the dispensing channel 23.

The spring element 22 described above can, as is also preferred, be an injection-molded part made of a thermoplastic elastomer, optionally consisting of silicone, while the other components of the dispenser 1 are preferably made of polypropylene and / or polyethylene. As a result of this training, the dispenser 1 is preferably completely recyclable.

The spring element 22 is initially shaped like a plate with reference to an unloaded position, which can more preferably correspond to the starting position according to FIGS. 1 to 4, with a plate base which in the starting position has a vertical section, as shown, in the Essentially horizontally extending leg 26 is formed. This horizontally oriented leg 26 is preferably uniform and integral material in the region of its radially outer end into a vertically upward curvature 27 with reference to the graphic representations, which further merges into an at least approximately vertically directed upward leg 28. The upward leg 28 forms the further delimiting wall 29 for the dispensing chamber 19, correspondingly circumferentially to the central axis x.

The upward leg 28 merges into a mounting projection 30 in the vertically upper area facing away from the curvature 27. This can be a ring-like circumferential around the axis x, in vertical section according to the representations essentially rectangular or square-shaped Act designed section, which is received in a headpiece-side Halterungsauf 31.

The mounting receptacle 31 can, as also shown, be formed in the form of a circumferential, vertically downwardly open groove 32, with a groove cover 33 formed by the U-web and two, the respective U-legs forming, in a vertical section preferably parallel side walls, of which a radially inner side wall of the groove 32 can be given by the side wall 20 described before. A radially outer side wall 34 runs at a radial distance from the side wall 20, likewise circumferentially to the central axis x.

As is also preferred, the holding projection 30 can be held in the groove 32 or the holding receptacle 31 in a form-fitting and / or frictional locking manner. As described above, the projection base 35, which has a rectangular cross-section, can rest radially on the inside against the inner side wall 20 and radially on the outside against the side wall 34, possibly also with a vertically upwardly directed end face on the groove cover 33.

Furthermore, a protrusion leg 36 projecting vertically downward can be integrally formed on the protrusion base 35, made of the same material and in one piece, which can likewise be supported on the facing surface of the radially outer side wall 34.

The radially outer side wall 34 can extend vertically downward so far that it protrudes beyond the projection leg 36. In addition, the vertical extension length a of the radially outer side wall 34, starting from the groove cover 33, can be approximately 1.5 to 2.5 times, further approximately 2 times the vertical length b of the radially inner side wall 20. In the starting position, the essentially plate-like section of the spring element 22 is connected to the mounting projection 30 via a hinge-like taper 37 formed between the upward leg 28 and the mounting projection 30. This hinge-like taper 37 is given by a thinning of the material compared to the two adjacent areas. The material thickness in the area of the taper 37 can be approximately 0.3 to 0.7 times, further for example 0.5 times the thickness d in the area of the upward leg 28 and / or the curvature 27 and / or of the leg 26 correspond.

The taper 37 can be positioned with respect to the arrangement on the bracket projection 30 so that starting from this taper 37, the projection base 35 extends upwards and the projection legs 36 extend vertically downwards, with the projection leg 36 extending radially outward and may extend at a radial distance from the upward leg 28.

In addition, the radially inner side wall 20 of the head piece 4 can be dimensioned with regard to its intercalated length b such that it ends in the area of the taper 37 or above this taper 37.

From the leg 26, which essentially forms the plate bottom of the spring element 22 and extends horizontally in vertical section, an annular plug-in projection 38 extends vertically downwards. This engages in a holding manner in the groove-like plug-in receptacle 12, correspondingly between the pot wall 13 and the receptacle wall 16.

In this case, the plug-in projection 38 can have a wall thickness c measured in the radial direction with reference to a conical section, for example according to FIG. 3, which is 1.5 to 2.5 times, further approximately 2 times the largest Thickness d in the area of the horizontally extending leg 26 and / or curvature 27 and / or of the upward leg 28.

In addition, the plug-in projection 38 can have an axial length e, starting at a lower edge 39 of the leg 26 running horizontally in the starting position, which length e according to the illustrated embodiment is approximately the length f of the spring element 22 between the lower edge 39 and the axially upper end of the mounting projection 30 may correspond chen.

Both the retaining projection 30 and the plug projection 38 can, as is also preferred, be formed in one piece and made of the same material with the plate-like shaped spring element section. In addition, a valve section 40 for forming an outlet valve 41 and a valve plug 42 for forming an inlet valve 43 can also be provided in one piece and made of the same material. The valve section 40 can be formed on the retaining projection 30 in the manner of a tab in the region of an axially upper end of the retaining projection 30. This valve section 40 enters the output channel 23 through a provided opening 44 and, in the valve closure position, lies in a sealing manner in front of the outlet opening 25 (cf. in particular FIG. 3). The valve plug 42 is connected via webs 45 to the area of the leg 26 which runs horizontally in the starting position and closes the inlet opening 15 in the manner of a valve in the starting position according to FIG. 3.

With respect to the head piece 4 and the spring element 22, assembly can take place in such a way that, according to a possible embodiment, the spring element Ment 22 is placed on the insert 10, according to the insertion of the Steckvor jump 38 into the plug-in receptacle 12 and then the head piece 4 is placed, with the introduction of the holding projection 30 into the holding receptacle 31 and the valve section 40 through the opening 44 in the output channel 23 Alternatively, however, the spring element 22 can also initially be held on the head piece 4, with the corresponding insertion of the holding projection 30 in the holding receptacle 31, after which the head piece 4 provided with the spring element 22 is placed on the mass container 3, with the insertion of the plug projection 38 in the plug-in receptacle 12 of the insert part 10.

In both cases, this provides advantageous support for self-discovery in the course of assembly. In its unloaded starting position, the spring element 22 has a rigidity which is favorable for assembly.

In addition, in the starting position according to FIG. 3, the spring element 22 can be in a relief position or in a position almost corresponding to a relief position. This results in long-lasting, good spring properties of the spring element 22 and, moreover, favorable haptics when the head piece 4 is lowered for the user in the course of actuating the dispenser.

A lowering movement of the head piece 4 along the central axis se x in the direction of the mass container 3 results in a mass output (cf. FIG. 5). hn course of this descent is under educing volume _V from the transfer chamber 19 reaches a pressure increase. This results in the valve section 40 forming the outlet valve 41 being lifted off to release the outlet opening 25. The mass M stored in the dispensing chamber 19 is (at least partially) discharged via the dispensing channel 23. In the course of this lowering movement and as a result of the pressure load associated with it, the valve plug 42 forming the inlet valve 43 is pressed sealingly into the area of the inlet opening 15.

In the course of this lowering movement of the head piece 4, a spring restoring force is built up in the spring element 22. This can, as can be seen in Fig. 5, as a result of the pivoting of the in the initial position essentially horizontally extending leg 26 downwards around a temporary bending axis resulting in the support of the leg 26 on the free end face of the receiving wall 16, so that with the leg 26, the curvature 27 and the upward leg 28 in the lowered headpiece position and thus in the tensioned position of the spring element 22 in vertical section, a substantially approximately U-shaped area is established, which is particularly in the actuation position according to FIG. 5 essentially un below the support plane of the receiving wall 16 for the leg 26 he stretches.

From this actuation position according to FIG. 5, there is an automatic return, in particular as a result of the return of the leg 26 in the direction of its horizontal basic alignment, with the pressure load on the head piece 4 no longer present. The associated negative pressure in the dispensing chamber 19 leads, on the one hand, to support the sealing of the valve section 40 against the outlet opening 25 and to a lifting of the valve plug 42 from the inlet opening 15 (see dash-dotted illustration in FIG. 3), see above that when the head piece 4 is displaced back in the direction of the starting position, mass M is sucked through the inlet opening 15 into the dispensing chamber 19. If the tab-like valve section 40 in the first embodiment shown in Figures 1 to 7 extends exclusively within the output channel 23 and viewed in the circumferential direction with a circumferential length that is preferably smaller than the inner diameter of the output channel 23, this results According to the second exemplary embodiment shown in FIGS. 8 and 9, a valve section 40 which also here essentially lips vertically upwards and which is uniformly and closed ring-shaped circumferentially with respect to the catch center axis x at the top of the retaining projection 30.

For complete accommodation and for the preferred orientation-free fitting of the head piece 4 with the spring element 22 designed in this way, the head piece 3, viewed in the circumferential direction, is provided with a groove 46 for receiving the valve section 40 around the outside of the outlet channel 23. The valve section 40 can project completely into this groove 46 with a view to a described cross section. In this case, the groove 46 can continue to be designed and also be provided with a radial dimension that can prevent the valve portion 40 from being displaced in the course of a bulk output correspondingly outside the output channel 23.

The groove 46 can furthermore, as is also preferred, be formed in the manner of a vertical extension of the mounting receptacle 31 with possibly a reduced cross-section.

According to the embodiment described above, the channel wall circumferentially delimiting the output channel 23 is provided in the circumferential direction on both sides of the output channel 23 with a slot-like opening which is preferably completely sealed by the valve section 40 penetrating these openings. In the course of a downward movement of the head piece 4 to dispense the mass and the associated pressure increase within the dispensing chamber 19, there is preferably only a lobe-like pivoting displacement of the valve section 40, as described above, in the area within the dispensing channel 23 that covers the outlet opening 25 in a valve-like manner (cf. Fig. 9).

Furthermore, according to the embodiment shown in Figures 8 and 9, the projection legs 36 of the mounting projection 30 protrude vertically downward beyond the radially outer side wall 34 and thereby underpin the radially outer side wall 34, whereby a further favorable retention of the spring element 22 on the head piece 4 can be achieved. In addition, there can be an axial support of the head piece 4 via the radi al outer side wall 34 on the base portion 47 connected to the projection limb 36.

In addition, as also provided in the third exemplary embodiment described below, the insert part 20, pointing in the direction of the head piece 4 and circumferentially to the receiving wall 16, can have integrally formed ribs 48, in particular to stabilize the insert part 10. As can also be seen from the illustrations, these ribs 48 can be provided distributed uniformly over the circumference.

The head piece 4 can also have ribs 49 of this type, which can be formed on the underside of an actuating surface 50 of the ceiling section 21 pointing into the interior of the dispensing chamber 19. These ribs 49 can, as is also preferred, be formed in one piece and made of the same material with the head piece 4, this more preferably with a uniform distribution of a plurality of such ribs 49 around the longitudinal center axis x. In addition, the circumferential valve section 40 of the embodiment in FIGS. 8 and 9 in the usual position of use, in particular in the valve closed position according to FIG. 8, from an essentially vertical orientation in the unaffected pre-assembly state A few degrees of angle, for example by 1 ° to 3 ° radially outwardly elastically formed, lie in the groove 46 or in the sealing seat within the output channel 23. This results in a corresponding bias of the valve section 40 in the direction of the sealing position.

FIGS. 10 to 12 show a further embodiment in which the holding projection 30 of the spring element 22 is held on the head piece 4 in particular by a radially outer abutment on the side wall 34 of the storage space 2. The mounting receptacle 31 is essentially given by the side wall 34. In the position of use according to FIGS. 10 to 12, the holding projection 30 is positively and frictionally engaged in the holding receptacle 31, resting against the facing surface of the side wall 34, with a lower base section 47 of a projection leg 36 also provided here walling the sides 34 can undertake.

The holding projection 30 can have a support surface 51 that is exposed vertically upwards. According to the illustrations, this can be oriented essentially in a plane transverse to the longitudinal center axis x.

On the support surface 51, a cross-sectionally beaded, overall concentric to the longitudinal center axis annular projection 52 can be formed, in particular as a result of a one-piece and material-uniform design with the retaining projection 30, in particular with the spring element 22. The annular projection preferably serves to interact with a lip section 53 of the head piece 4 to form the outlet valve 41.

The lip section 53 is essentially designed as a flat part that extends essentially horizontally, especially in an unloaded pre-assembly position. Here, as is also preferred, the lip section 53 can be formed in one piece and of the same material on a plug-in part 54 arranged on the head piece 4. The plug-in part 54 can interact radially inwardly with the radially inner side wall 20 in a latching manner. The lip portion 53 can extend further at a vertical distance from the vertically lower end of the side wall 20, starting from a radially inner mounting area 56 on a co-operating with the radially inner side wall 20, circumferential plug-in part wall 55 cantilevered radially outward. In the area of a radially outer free end area, the vertically downwardly facing surface of the lip portion 53 cooperates with the projection 52. Here, in a valve closing position according to FIG. 10, the lip section 53 can enclose an acute angle of a few degrees, for example of 2 ° or 3 °, to a horizontal plane in a cross section under prestress. The plug-in part wall 55 can form a ring section 57 projecting vertically downwards over the area of the circumferential lip section 53. This ring section 57 is suitable, in the depressed dispenser actuation position according to FIG. 12, to dip into the essentially U-shaped spring leg area that then results, essentially filling it. During this actuation of the dispenser and the associated increase in pressure in the dispensing chamber 19, the lip section 53 is lifted from its sealing seat (projection 52 of the mounting projection 30), as a result of the pivoting of the lip section 53 about the mounting area 56 the mass M past the lip portion 53 into a space 58 resulting between the side walls 20 and 34 and passed through this into the output channel 23.

The plug-in part 54 can essentially form the ceiling of the dispensing chamber 19. According to the embodiments described above, a guide of the head piece 4 in the direction of the longitudinal center axis x on the insert part 10 and thus on the bulk container 3 having the storage space 2 can be achieved by a leading contact of the insert-part-side ribs 48 on the facing inner surface of a fourth cylinder section 62 of the head piece 4, which fourth cylinder section 62 can be formed directly by the ring wall section 18.

The vertical collar 17 can be part of a third outer cylinder section 61 of the insert part 10 and at the end facing the head piece 4 form a radially inwardly pointing, optionally annular stop projection 63. This stop projection 63 is preferably used for the limit stop of the head piece 4 in the starting position, for which purpose the limit stop 63 cooperates with a counter-stop 64 of the head piece 4. The counter-stop 64 can, as is also preferred, be molded onto the above-described fourth cylinder section 62 of the head piece 4. Correspondingly, in the embodiments described above, there is a guide and stop limitation by the same component of the head piece 4, here the fourth cylinder section 62.

In the fourth and fifth embodiments of the dispenser 1 shown in Figures 13 to 22, different components are used for the limit stop and the guide both with respect to the head piece 4 and with respect to the insert part 10. In these embodiments, preferably no ribs 48 are provided on the insert part side.

Rather, the insert part 10 has, in addition to the radially outer third cylinder section 61, a further radially inner first cylinder section 59, which is preferably aligned concentrically to the third cylinder section 61. The first cylinder section 59 of the insert part 10 preferably arises in a transition area between the conical region 11 of the insert part 10 and a base of the insert part 10 that runs essentially transversely to the longitudinal center axis x. This first cylinder section 59 can be viewed in the axial direction starting from the base of the insert part 10 up to about the opening plane of the insert part 10 defined by the free edge of the third cylinder section 61.

The limit stop is also given in these embodiments to follow the interaction of the third cylinder section 61 of the insert part 10 and the fourth cylinder section 62 of the head piece 4, in particular due to the limit stop interaction of the insert part-side stop projection 63 and the head piece-side counterstop 64, the counter stop 64 possibly can be formed by individual ribs arranged around the circumference outside the wall of the fourth cylinder section 62 and extending essentially in the axial direction. The guidance, however, is provided by the interaction of the first cylinder section 49 on the insert part side with a second cylinder section 60 of the head piece 4 provided separately here, the first cylinder section 59 on the insert part side being arranged radially outward with respect to the second cylinder section 60 of the head piece 4 according to the illustrations can. Overall, the guide cylinder sections are provided radially inward with respect to the stop cylinder sections, and according to a preferred embodiment, the headpiece-side second cylinder section 60 can be formed by the annular wall section 18 of the mounting receptacle 31, which is elongated in the axial direction compared to the previously described embodiments.

The valve plug 42 of the fourth and fifth embodiment can, for example, also be described with reference to FIG. 12, be designed like a shell. According to the representations in FIGS. 18 to 22, such a shell-like valve plug 42 can have a central pin 65, possibly a web or cross-web, which accommodates the longitudinal center axis x, which can preferably be formed in one piece and of the same material with the valve plug 42. This pin 65 can extend from a shell base of the valve plug 42 into a shell opening plane of the valve plug 42. As a result of this configuration, increased rigidity can be achieved in this region of the valve plug 42.

In addition, the fourth and fifth embodiments also differ in terms of the design and alignment of the leg 26 of the spring element 22 to the embodiments 1 to 4. So in the fourth and fifth embodiment, preferably no substantially horizontally extending leg is provided who give up over a curve in an upward! transforms. Rather, the leg 26 extends in the un- loaded starting position preferably ascending conically with a continuous curvature, beginning immediately in the transition to the plug-in projection 38 and at the end opening into the holding projection 30. The leg 26 can extend along a straight line with reference to a verÜkal section, for example according to FIG. 13 or FIG as also preferred, along a continuously curved line. Thus, according to the enlarged representations in FIGS. 14 and 19, a straight line connecting the mouths of the leg 26 into the plug-in projection 38 on the one hand and in the holding projection 30 on the other hand to a plane viewed transversely to the longitudinal central axis x, which is preferably aligned parallel to the plane Opening plane E, enclose an acute angle a of about 15 ° to 30 °.

Due to the conical design of the section of the spring element 22 formed in cross section by the leg 26, a favorable assembly of the same can be achieved. The substantially conically rising formation of the leg 26 can provide greater stability of the spring element 22 in the unetäügten position, in particular with regard to an unintentional depression of the head piece 4. The conically rising leg 26 can also be combined in a further embodiment with a Essentially horizontally oriented section extending from the plug-in projection 38 according to the first exemplary embodiments.

Furthermore, according to the embodiment in Figures 18 to 22 in the transition region from the plug-in projection 38 in the leg 26 on the underside of the leg 26 and thus radially outward with respect to the plug-in projection 38, a bead 66 can be formed in one piece and of the same material. As also shown, this bead 66 can point in the direction of the insert part 10 have flat and transversely to the longitudinal center axis x from directed lower surface, which can also occupy an axial distance from the facing end face of the receiving wall 16 according to the illustrations. This axial Ab was about 0.5 to 2 times, further about 1 times the material thickness of such a receiving wall 16 correspond.

By the bead 66 an increased rigidity in this transition area from the plug-in projection 38 in the leg 26 can be achieved, whereby the kink of the leg 26 upon actuation of the head piece 4 according to Figure 20 preferably only occurs from about an area that extends radially adjoins the bead 66 on the outside. The kick area is specifically placed in the thin-walled area formed by the leg 26.

As can also be seen by way of example in the representations of FIGS. 13 to 22, the projection base 35 of the mounting projection 30 can be axially spaced apart from the facing groove base 67 of the groove 32 with respect to its end face facing upwards in the direction of the ceiling section 21 in the mounting receptacle 31. This axial distance can correspond to about 0.5 to 2 times, further about 1 times the above-described axial distance between the bead 66 and the receiving wall 16, further for example about the material thickness of the groove 32 radially outwardly delimiting second cylinder section 60.

According to a possible embodiment, this axial distance can be given by ribs formed individually over the circumference, formed on the groove base 67, against which the projection base 35 occurs in the course of assembly. As a result, a clear contact of the projection socket 35 in the holder receptacle 31 can be achieved. Any uneven Opportunities, for example due to air inclusion between the contact surfaces, can be compensated for.

The outlet opening 25, which is closed in the unloaded starting position, can also be formed by a downwardly open-edged U-opening in the direction of the leg 26 (compare in particular Figures 18 and 20), which results in a further improved flow of mass when the dispenser is actuated can.

The recess 68, which is oriented essentially in the direction of the longitudinal center axis x and merges into the output channel 23, for receiving the flap-like valve section 40 can, according to the fifth embodiment shown in FIGS. 18 to 22, proceed from the mounting receptacle 31 over the area of the output channel 23 can also be formed to form a protrusion 69 that is kept free.

The recess 68 formed behind the valve section 40 in the pivoting direction of the valve section 40 when the head piece 4 is actuated can also be enlarged compared to the exemplary embodiments described above, so that there is an escape space 70 for the valve section 40. This can provide the valve section 40 with sufficient pivoting mobility while at the same time limiting the pivoting. As can further be seen in particular from the perspective representations in Figures 21 and 22, in a further embodiment of the valve portion 40 radially outward, corresponding to the output channel 23 facing, have a concave formation 71, whereby a favorable overall

Swivel and spring characteristics of the valve section 40 can be given with further increased stability of the same. Alternatively, according to the embodiment in FIG. 23, the valve section 40, viewed in the circumferential direction, can have a middle, relatively thin-walled flap section 73, which is flanked on both sides in the circumferential direction by thick-walled rib sections in the radial direction - based on the longitudinal center axis x 72. The thickness of the rib section

72 can correspond to approximately 3 to 5 times, further approximately 4 times the thickness of the tab section 73 viewed in the same direction.

In addition, as also shown, in the circumferential direction between the rib sections 72 and the tab section 73, a transition section 74 of reduced thickness compared to the adjacent rib section 72 can be formed, with a thickness that is approximately half the thickness of the rib section 72 and further about twice the thickness of the flap section

73 can correspond.

[00129] As a result of this flap design, favorable pivoting mobility can also be achieved with sufficiently high stability, in particular in the valve closed position. A valve section 40 formed in this way can, if necessary, pivot open only in the area of the central flap section 73 in a valve-opening manner when actuated. The edge-side rib sections 72 can optionally find an abutment in the above-described projection 69. As an alternative or in combination with this, the thick-walled rib sections 72 together with the central thin-walled flap section 73 - further if necessary together with the transition sections 74 - can swivel open into the valve open position when the dispenser is actuated, but possibly opposite the middle flap section 73 and / or the transition sections 74 over a less large pivoting angle - for example, as a result of a pivot limitation of the rib sections 72 engaging in the protrusion 69 which allows a limited pivoting movement. The above explanations serve to explain the inventions covered by the application as a whole, which also develop the state of the art independently at least by means of the following combinations of features, whereby two, more or all of these combinations of features can also be combined, namely :

A dispenser 1, which is characterized in that the holder formation is designed as an overall circular ring-shaped holder projection 30 with a larger cross-section than that of the leg 26, with an upper protrusion base 35 that lies in the holder receptacle 31 and has a closed cross-section .

A dispenser 1, which is characterized in that the transition region U has a hinge-like taper 37.

A dispenser 1, which is characterized in that the mounting projection 30 forms a with respect to a transition area U between the upward leg 28 and the mounting projection 30 downwardly projecting projection leg 36, which is based on the transition area U. extends on the longitudinal center axis x of the dispenser 1 radially outward to the upward leg 28.

A dispenser 1, which is characterized in that the holding receptacle 31 of the head piece 4 for receiving the holding projection 30 is designed as a groove 32 open vertically downwards.

A dispenser 1, which is characterized in that the holding projection 30, starting from the transition region U, extends vertically upwards. A dispenser 1, which is characterized in that the mounting projection 30 engages in the circumferential, vertically downwardly open groove 32 of the head piece 4.

A dispenser 1, which is characterized in that the groove 32 has side walls 20, 34 of different lengths in relation to a cross section 2 in the vertical direction.

A dispenser 1, which is characterized in that a side wall 20, which is radially inner relative to the longitudinal center axis x, is shorter than the radially outer side wall 34. A dispenser 1, which is characterized in that the radially outer

Side wall 34 protrudes vertically below the projection leg 36.

A dispenser 1, which is characterized in that the radially inner side wall 20 ends in the transition region U with respect to its vertical extension.

A dispenser 1, which is characterized in that a wall thickness c of the plug projection 38 measured in the radial direction corresponds to 1.5 times or more the greatest thickness d in the area of the horizontally extending leg 26.

A dispenser 1, which is characterized in that the plug projection 38 has an axial length e, beginning at a lower edge 39 of the horizontally extending leg 26 in the starting position, which is equal to or greater than the axial extent f of the spring element 22 , starting from the mentioned lower edge 39 of the horizontally extending leg 26 to the axially upper end of the mounting projection 30. A dispenser 1, which is characterized in that a valve portion 40 for forming the outlet valve 41 is integrally formed on the holding projection 30.

A dispenser 1, which is characterized in that the valve portion 40 is formed over a larger peripheral portion of the mounting projection 30 than corresponds to a circumferential largest free opening dimension of an outlet opening of the output channel 23 adjacent to the mounting projection 30.

A dispenser 1, which is characterized in that the valve portion 40 extends over a third or more of the circumference of the support projection 30.

A dispenser 1, which is characterized in that the valve portion 40 is formed uniformly and closed in a circular manner.

A dispenser 1, which is characterized in that a groove 46 for receiving the valve section 40 is formed in the head piece 4 in the circumferential direction outside the dispensing channel 23.

A dispenser 1, which is characterized in that the holding projection 30 cooperates with a lip section 53 of the head piece 4 to form the outlet valve 41. A dispenser 1, which is characterized in that the lip section 53 is related extends in a cantilevered manner radially outward on the cross section starting from a radially inner holding area 56. A dispenser 1, which is characterized in that the lip section 53 is formed to run essentially horizontally in cross section.

A dispenser 1, which is characterized in that the lip section 53 cooperates with a support surface 51 of the holding projection 30 that is exposed vertically upwards.

A dispenser 1, which is characterized in that an annular projection 52 is formed on the support surface 51, on which the lip portion 53 rests in a sealing manner. A dispenser 1, which is characterized in that the lip section 53 is formed on a plug-in part 54 arranged in the head piece 4.

A dispenser 1, which is characterized in that the lip section 53 merges radially on the inside into a circumferential ring section 57 protruding vertically below the lip section 53 based on the cross section.

A dispenser 1, which is characterized in that the lip section 53 and / or the plug-in part 54 consist of a hard plastic.

[00156] A dispenser 1, which is characterized in that the horizontally extending leg 26 is also formed in one piece with the inlet valve 43. A dispenser 1, which is characterized in that the head piece 4 is guided on an insert part facing the storage space 2 with a limit stop.

A dispenser 1, which is characterized in that a guide and a stop limit are assigned to different components of the head piece 4 and the insert part 10.

A dispenser 1, which is characterized in that the insert part 10 has a first cylinder section 59 which cooperates with a second cylinder section 60 of the head piece 4 for guidance. A dispenser 1, which is characterized in that the insert part 10 has a third cylinder section 61 which is also used for locking with the storage space 2 and which interacts with a fourth cylinder section 62 of the head piece 4 to limit the stop.

All the features disclosed are essential to the invention (individually, but also in combination with one another). The disclosure of the application hereby also includes the full content of the disclosure content of the associated / attached priority documents (copy of the previous application), also for the purpose of including features of these documents in the claims of the present application. The subclaims characterize, even without the features of a referenced claim, with their features independent inventive developments of the prior art, in particular in order to make divisional applications on the basis of these claims. The invention specified in each claim can additionally have one or more of the features provided in the above description, in particular provided with reference numbers and / or specified in the list of reference numbers. Which he- Creation also applies to design forms in which some of the features mentioned in the above description are not implemented, in particular if they are recognizable for the respective purpose or can be replaced by other technically equivalent means.

List of reference symbols

1 dispenser 29 delimitation wall

2 Storage room 30 bracket projection

3 mass container 31 mounting bracket

4 head piece 32 groove

5 Limiting part 33 groove cover

6 follower piston 34 side wall

7 pouch 35 protrusion bases

8 locking cap 36 protrusion legs

9 Caseback 37 taper

10 insert part 38 plug-in projection

11 cone area 39 lower edge

12 plug-in receptacle 40 valve section

13 Cup wall 41 outlet valve

14 pot cover 42 valve plugs

15 inlet port 43 inlet valve

16 receiving wall 44 opening

17 vertical collar 45 bar

18 ring wall section 46 groove

19 dispensing chamber 47 base section

20 side wall 48 rib

21 ceiling section 49 rib

22 spring element 50 actuation surface

23 Output channel 51 support surface

24 dispensing opening 52 protrusion

25 outlet port 53 lip portion

26 legs 54 plug-in part

27 Curvature 55 wall of plug-in part

28 Give upwards! 56 Bracket Area 57 ring section

58 Annular space E opening level

59 first cylinder section M mass

60 second cylinder section U transition area

61 third cylinder section

62 fourth cylinder section

63 Stop protrusion

64 counter attack

65 cones

66 bead

67 Groove base

68 recess

69 overhang

70 alternative room

71 loft

72 rib section

73 lobe section

74 transition section a length

b length

c wall thickness

d thickness

e length

f length

x central longitudinal axis

Claims

Expectations

1. Dispenser (1) for pasty masses (M), consisting of a storage space (2) with a limiting part (5) that moves along with the suction from the storage space (2) and a head piece (4) guided relative to the storage space (2) , wherein a dispensing chamber (19) is formed between the head piece (4) and the storage space (2), with an inlet valve (43) and an outlet valve (41), the dispensing chamber (19) also having a dispensing channel (23) with a dispensing opening (24) is assigned and where a spring element (22) acting between the storage space (2) and the head piece (4) is provided for resilience of the head piece (4) when moving from an initial position into an actuating position, which at the same time partially has a Boundary wall (29) of the dispensing chamber (19) forms and, viewed in a cross section based on a drawing, in which the head piece (4) is arranged vertically above and the storage space (2) is arranged vertically below and has a longitudinal center axis (x) of the Dispenser (1) is depicted as a line, a lower tubular protrusion (38), which is sealingly received in a plug-in receptacle (12) that is adapted to connect to the storage space (2), and has an upper holder formation that is in a holder approximately receptacle (31) of the head piece (4) is sealingly accommodated, where with further one-piece design of the spring element (22) with the Hal sion projection (30) and the plug-in projection (38) based on the ge mentioned cross-section in the starting position the spring element (22 ) is designed as a leg (26) which extends in connection with the plug-in projection (38) and which merges into the holding projection (30) via an upward curvature (27), characterized in that the holding formation is formed as an opposite to the leg ( 26) is formed with a larger cross-section, generally circular ring-shaped mounting projection (30), with an upper, in the mounting seat (31) incorporated lowing projection base (35), which has a closed cross section.

2. Dispenser (1) according to claim 1, characterized in that the transition area (U) has a hinge-like taper (37).

3. Dispenser (1) according to one of the preceding claims, characterized in that the holding projection (30) has a respective. A transition area (U) between the upward leg (28) and the holding projection (30) protruding vertically downward projection leg ( 36) which, starting from the transition area (U), is based on the longitudinal center axis (x) of the dispenser (1) radially outside to the

Upward leg (28) extends.

4. Dispenser (1) according to one of the preceding claims, characterized in that the mounting receptacle (31) of the head piece (4) for receiving the mounting projection (30) is designed as a vertically downwardly open groove (32).

5. Dispenser (1) according to one of the preceding claims, characterized in that the holding projection (30) starting from the transition region (U) extends vertically upwards.

6. Dispenser (1) according to one of the preceding claims, characterized in that the holding projection (30) engages in the circumferential, vertically downwardly open groove (32) of the head piece (4).

7. Dispenser (1) according to one of the preceding claims, characterized in that the groove (32) has side walls (20, 34) of different lengths in relation to a cross section (2) in the vertical direction.

8. Dispenser (1) according to one of the preceding claims, characterized in that one relative to the longitudinal center axis (x) is radially inner

Side wall (20) is shorter than the radially outer side wall (34).

9. dispenser (1) according to any one of the preceding claims, characterized ge

indicates that the radially outer side wall (34) protrudes vertically below the projection leg (36).

10. Dispenser (1) according to one of the preceding claims, characterized ge

indicates that the radially inner side wall (20) ends with respect to its vertical extension in the transition region (U).

11. Dispenser (1) according to one of the preceding claims, characterized in that a wall thickness (c) of the plug-in projection (38) measured in the radial direction is 1.5 times or more the greatest thickness (d) in the area of the horizontal extending leg (26) corresponds.

12. Dispenser (1) according to one of the preceding claims, characterized ge

indicates that the plug-in projection (38) has an axial length (e), starting at a lower edge (39) of the horizontally extending leg

(26) in the starting position, which is equal to or greater than the axial extension (f) of the spring element (22), starting from the mentioned lower edge (39) of the horizontally extending leg (26) to the axially upper end of the retaining projection ( 30).

13. Dispenser (1) according to any one of the preceding claims, characterized in that a valve section (40) for forming the outlet valve (41) is integrally formed on the holding projection (30).

14. Dispenser (1) according to one of the preceding claims, characterized in that the valve section (40) is formed over a larger circumferential section of the holding projection (30) than is the largest free opening dimension in the circumferential direction of an outlet opening of the dispensing channel (23) ) corresponds in the vicinity of the holding projection (30).

15. Dispenser (1) according to one of the preceding claims, characterized ge

indicates that the valve section (40) extends over a third or more of the circumference of the holding projection (30).

16. Dispenser (1) according to one of the preceding claims, characterized ge

indicates that the valve section (40) is designed to be uniform and closed in an annular manner.

17. Dispenser (1) according to one of the preceding claims, characterized ge

indicates that a groove (46) for receiving the valve section (40) is formed in the head piece (4) in the circumferential direction outside the output channel (23).

18. Dispenser (1) according to one of the preceding claims, characterized ge

indicates that the holding projection (30) with a lip section (53) of the head piece (4) cooperates to form the outlet valve (41).

19. Dispenser (1) according to one of the preceding claims, characterized in that the lip portion (53) relative to the cross section starting from a radially inner mounting area (56) extends freely radially outward.

20. Dispenser (1) according to one of the preceding claims, characterized in that the lip portion (53) is formed in the cross-section essentially horizontally running.

21. Dispenser (1) according to any one of the preceding claims, characterized in that the lip portion (53) mencooperates with a vertically exposed support surface (51) of the retaining projection (30).

22. Dispenser (1) according to one of the preceding claims, characterized in that an annular projection (52) is formed on the support surface (51), on which the lip portion (53) rests in a sealing manner.

23. Dispenser (1) according to one of the preceding claims, characterized in that the lip portion (53) is formed on a plug-in part (54) arranged in the head piece (4).

24. Dispenser (1) according to one of the preceding claims, characterized in that the lip section (53) merges radially on the inside into a circumferential ring section (57) projecting vertically below the lip section (53) relative to the cross section.

25. Dispenser (1) according to one of the preceding claims, characterized in that the lip portion (53) and / or the plug-in part (54) consist of a hard plastic.

26. Dispenser (1) according to one of the preceding claims, characterized in that the horizontally extending limb (26) is also formed in one piece with the inlet valve (43).

27. Dispenser (1) according to one of the preceding claims, characterized in that the head piece (4) is guided on a stop-limited insert part (10) facing the storage space (2).

28. Dispenser (1) according to one of the preceding claims, characterized in that a guide and a limit stop are assigned under different components of the head piece (4) and the insert part (10).

29. Dispenser (1) according to one of the preceding claims, characterized in that the insert part (10) has a first cylinder section (59) which interacts for guidance with a second cylinder section (60) of the head piece (4).

30. Dispenser (1) according to one of the preceding claims, characterized in that the insert part (10) also has a third cylinder section (61) which is also used for locking with the storage space (2) and which is connected to a fourth cylinder section (62) to limit the stop. of the head piece (10) cooperates.

31. Dispenser (1), characterized by one or more of the characterizing the features of one of the preceding claims.