EP3934814A1

EP3934814A1 - Dispenser for discharging flowable compounds

Info

Publication number: EP3934814A1
Application number: EP20714117.7A
Authority: EP
Inventors: Martin Presche
Original assignee: RPC Bramlage GmbH
Current assignee: RPC Bramlage GmbH
Priority date: 2019-03-05
Filing date: 2020-03-04
Publication date: 2022-01-12
Also published as: CN113518670B; WO2020178339A1; DE102020105803A1; US20220126314A1; CN113518670A; US11529640B2; BR112021014842A2

Abstract

The invention relates to a dispenser (1) for discharging flowable, e.g. liquid or pasty compounds (M), comprising a reservoir (2) for holding the compound (M) and comprising a dispensing pump (6). The dispenser (1) has a longitudinal axis (x). Furthermore, the dispensing pump (6) has an inflow and an outflow channel (12, 13), a pumping chamber (11) which is delimited on the inflow and outflow sides by valves (14, 15), and a head piece (5). The head piece (5) has a dispensing opening (23). A pumping part (P) can be moved relative to a cup part (9) against an elastic force of a restoring device (16) in order to achieve a pumping stroke (b), and the head piece (5) is coupled to the pumping part (P) with respect to motion such that a motion of the head piece (5) from a completely depressed position to a reachable extension height corresponds to the pumping stroke (b). According to the invention, in order to provide a dispenser which is further improved with respect to versatility of use, a variable limiting device (27) is provided for variably limiting the pumping stroke (b) and a change in the pumping stroke (b) corresponds to a change in the extension height.

Description

description

Dispenser for dispensing flowable materials

Field of technology

The invention relates to a dispenser for dispensing flowable, for example liquid or pasty masses, with a storage container for receiving the mass, with a dispenser pump, the dispenser having a longitudinal axis, the dispenser pump also having an input and an output channel and a pumping chamber delimited by inlet and outlet valves and a head piece, the head piece having a dispensing opening, a pumping part being movable relative to a pot part against an elastic force of a restoring device to achieve a pumping stroke and the head piece being coupled to the pumping part is, so that a movement of the head piece from a fully depressed position to an attainable extension height corresponds to the pump stroke.

The Erßndung also relates to a dispenser for dispensing flowable gene, such as liquid or pasty masses, with a storage container for receiving the mass, with a modular design Spen derpump, the dispenser has a longitudinal axis, the dispenser pump a further Has an inlet and an outlet channel and a pump chamber delimited on the inlet and outlet side by valves and a head piece, the head piece having a dispensing orifice, the dispenser pump also being insertable into the storage container and being connectable to the storage container by a latching connection, the The pump chamber is formed by a piston and a pot part, which has a pot bottom and a pot wall, the piston being received in the pot part in a slidable manner to achieve a pumping stroke, the pot part also having fastening formations on the outside wall side, for fastening supply cooperation with an inner wall of the storage container, wherein the pot part with the mounting formations for adaptation to un ferent storage containers is also designed to be exchangeable, with a restoring device arranged between the piston and the pot part being provided and limiting devices for limiting a return movement, which limiting devices at a maximum Pump chamber volumes come into contact with one another, the head part also being replaceably attachable to the dispenser pump and having a dispensing opening and a dispensing channel, the dispensing channel being insertable into the output channel of the dispenser pump, with the dispenser pump being inserted into the storage container as large as possible, that a lower edge of the dispenser pump with its input channel has direct contact with the mass to be dispensed.

State of the art

Such a dispenser is known, for example, from EP 1 015 340 B1. Due to the modular and interchangeable design, a compact dispenser pump is specified, which can be used with a large number of freely configurable dispensers in their head piece and storage container. Reference is also made to DE 20 2008 011 730 U1 for such donors. From the latter publication it is also known to provide an obtuse angle between a longitudinal axis of the link guide and a longitudinal axis of the closure part in a dispenser which has a locking part guided on a fixed dispenser part, and thereby a desired angle with regard to different parts To set movement characteristics. From EP 1 460 001 Al a dispenser with a pump chamber and a head piece is known, in which between the head piece and an upper exposed surface of a connecting part to the storage space an änderba rer distance can be adjusted, with a depression of the head piece always takes place from the same extension height. From JP 3 068 498 U, such a dispenser is known, in which a blocking part made of an elastic material can be clipped onto a free-standing connecting tube from the pump chamber to the pump head. When the blocking part is clipped on, the pump head can only be moved downwards by a smaller amount from the otherwise same extension height.

Summary of the invention

Based on the prior art presented, the invention is concerned with the task of specifying a dispenser for dispensing flowable gene, such as liquid or pasty, masses in which a dispenser pump is advantageously adjustable with regard to different output quantities.

This object is achieved first and foremost in the subject matter of claim 1, the aim being that a changeable limiting device is provided for changeable limitation of the pumping stroke and that a change in the pumping stroke corresponds to a change in the extension height. The changeable delimitation device thus leads to dispensers in which the head piece extends less far, depending on the setting of the delimitation device, only reaches a lower extension height. This can also be used advantageously to ensure that the lowest possible extension height is set in the packaging state. If necessary, this can result in a blockage which also prevents the pump from being actuated in the packaging state.

[0007] As an alternative or in addition to the measure that a change in the pump stroke corresponds to a change in the extension height, it is also possible to provide hen that if the pump stroke changes from a smaller one

Pump stroke to a larger pump stroke, the reset device tracks the head piece.

If an adjusting device, such as a screw adjusting device, is provided, the head piece can easily move automatically into the further extended position when adjusting to a larger stroke according to the elastic restoring device, which is then the starting position for one the pumping process to be carried out afterwards is to be followed.

The same effect also arises if, for example, a larger pump stroke is set only through an exchange part.

Using the limiting device, the pumping stroke of the piston is, in general terms, adjustable in the pot part and thus the amount of mass to be dispensed via the dispenser mouth in the course of a pump actuation. In this way, the pumping stroke can be limited between a minimum possible pumping stroke, which in a possible embodiment of the limiting device can also be zero, and a maximum possible pumping stroke, which is defined in particular by the limiting device described above. The dispenser as such is basically designed in such a way that the piston can reach a certain predetermined pump stroke. The limiting device is used to limit this maximum possible pump stroke, if applicable.

[0010] The pot part preferably has a pot bottom and also a pot wall. The pot wall preferably extends from the pot bottom on the head part side. The bottom of the pot can limit the storage container towards the dispenser pump. The limiting device can act between the pot bottom or the pot wall and the head piece. Here Another part, a replacement part, can be connected to the bottom of the pot. This configuration, that the limiting device acts between the pot bottom or a pot wall and the head piece, can also be provided as an alternative or in addition to the configuration that a change in the pump stroke corresponds to a change in the extension height and / or that when the pump stroke changes the reset device adjusts the head piece from a smaller pump stroke to a larger pump stroke.

[0011] The mobility of the piston relative to the pot part is preferred between a lowest piston position - with reference to a parking position of the dispenser on a surface in which parking position the longitudinal axis of the dispenser is oriented perpendicular to the surface - and a piston position in the axial direction - The shifted top piston position is limited by the limit device. These limiting devices or at least one of these limiting devices can be changed to change the possible displacement path of the piston along the axis and thus to change the maximum possible pump stroke.

[0012] The limiting device which restricts the pumping stroke and can optionally be separately assigned or adjusted can, according to one embodiment, only enable stroke limitation at all through a corresponding assignment. Alternatively, such a changeable limiting device is provided in addition to a device that is generally limited to a maximum possible pump stroke. The pump stroke can be reduced by means of the changeable limitation means compared to the maximum pump stroke defined by the limitation device which is basically present. As a result of the above-described embodiment, the dispenser can, for example, already be factory-set with differently set or lower differently designed limiting devices be provided to limit the pumping stroke. A basically changeable limiting device can also be provided which, if necessary, also allows the user to change the pump stroke.

In addition, according to a further possible embodiment, a changeable limiting device can be used as a transport lock for the dispenser, in particular in such an embodiment in which a

Pump stroke is inhibited.

[0015] Further features of the invention are, also in the description of the figures, often explained in their preferred assignment to the subject matter of claims 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 each can be independent of importance.

Thus, the limiting device can consist of replacement parts that can be used optionally with regard to a desired pump stroke and have different dimensions with respect to different pump strokes.

To achieve a desired pump stroke, corresponding to a desired maximum displacement of the piston along the longitudinal axis, an adapted limiting device can be used or attached as a replacement part. Here, for example, a limiting device as an exchange part can represent a transport lock for the dispenser, in particular the dispenser head, which limiting device does not allow a pumping stroke, and accordingly keeps the piston preferably in its lowest, preferably limit-stop position. In addition, other limiting devices can be provided as replacement parts, which can be arranged, for example, in place of the above-described limiting device, for example, representing a transport lock, further for example limiting devices that have a 0.25 or 0.5 or more, for example Allow 0.75 times the maximum pump stroke. Any other limiting value between zero and the maximum stroke can also be set in this regard via corresponding limiting devices.

The limiting devices can be fixed as exchange parts, for example se on the pot part of the dispenser, for example as a result of a screw connection or a locking connection.

[0020] The restriction device may in a possible embodiment anschlagbegrenzend usammenwirken directly to the dispenser head _Z, wel cher dispenser Kopf cooperating drive to the common Ver with the piston and the piston part. Accordingly, the restriction device may usammenwirken a further embodiment, for example, directly to the piston or the piston part _Z also mutandis. Each exchange part defines a possible pump stroke.

[0021] The limiting device can also consist of an adjustment part. This can be part of the dispenser, in particular not without tools, and furthermore not removable without destruction. The adjustment part allows a larger pump stroke in a first adjustment position than in a second adjustment position. Correspondingly, in a preferred embodiment, the adjustment part is designed for an essentially different arrangement of the element that essentially acts as a limiting device along the longitudinal axis. se of the donor. Thus, different pump strokes can be set with just one adjustment part.

The adjustability of the adjustment part can be made possible in one possible embodiment solely at the factory in the configuration of the dispenser or the dispenser head, with a position of the adjustment part found thereafter being able to be frozen, for example as a result of a corresponding latching, gluing or possibly partial welding with a section of the dispenser head that cannot be displaced with respect to the adjustment part or the pot file. In addition, according to a possible embodiment, the adjustment part can also be adjusted by the user in daily use, in order to enable different pump strokes as required, up to and including the prevention of a pump stroke, for example to achieve transport security. The adjustment part can in one possible embodiment along the

Longitudinal axis alone be designed to be shiftable. Here, in a wide rer embodiment, several setting stages can be provided over the maximum possible sliding displacement path, for example with the formation of a latch. In a preferred embodiment, the adjustment part is the result of a

Screw thread adjustable, with the result of a screwing movement, the adjustment part with which the pump stroke limitation essentially influencing the section is moved along the longitudinal axis. This section ultimately interacts with a counter-stop, in particular of the dispenser head. [0026] The adjustment can Kopf directly with the dispenser or a Kopf with the dispenser movably connected portion of the piston or piston part usammenwirken _Z. AlternaÜv the adjustment can impact member usammenwirken _Z also with an on which is guided linearly in the direction of the longitudinal axis of the dispenser to the adjustment part. As a result of this linear guidance, a rotary movement of the adjustment part or of the dispenser head about the longitudinal axis can lead to a linear displacement of the stop part along the longitudinal axis.

This also enables the pump stroke to be adjusted, preferably between a transport locking position and a maximum stroke.

The stop part can interact in terms of thread with the head part, wherein, according to a possible embodiment, the stop part engages with a radially inwardly facing external thread in a correspondingly shaped internal thread of the head part. Alternatively, a stop can also engage a radially inwardly inwardly protruding pin or the like in the head part-side internal thread.

In a further embodiment, the head piece can be rotatably coupled to the adjusting part, so that a change in the possible pumping stroke can be brought about by detecting the exposed head piece and rotating it relative to the storage container.

[0029] The adjustment can menwirken Usam this with the cup portion threadedly _Z. A rotation of the head piece about the longitudinal axis can lead to a superimposed displacement of the adjustment part along the longitudinal axis, to a change in the stop for the head piece and thus to a change in the pump stroke. A (superimposed) linear displacement to change the pump stroke is preferably only experienced by the adjustment part. In such a configuration, the head piece remains linear in the course of the change in the pump stroke The direction along the longitudinal axis is preferably not displaced, so that even with such a change in the alignment of the limiting device, no mass leakage occurs.

Brief description of the drawings

[0030] The invention is explained below with reference to the attached drawing, which, however, merely represents exemplary embodiments. A part, which 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 particularity highlighted there, is thus also described as a possible existing example for this further exemplary embodiment. The drawing shows:

1 shows a dispenser in a longitudinal section, relating to a first position of a changeable limiting device in a first embodiment;

FIG. 2 the enlargement of the area II in FIG. 1;

3 shows a representation corresponding to FIG. 1, but a second one

Concerning the position of the changeable limiting device;

4 shows a representation corresponding to FIG. 1, relating to a second embodiment;

FIG. 5 shows the enlargement of the area V in FIG. 4;

6 shows the dispenser according to FIG. 4 in a second position of the limiting device; 7 shows a further illustration corresponding to FIG. 1, relating to a third embodiment;

8 shows the enlargement of the area VIII in FIG. 7;

9 shows the dispenser according to FIG. 7 with a modified limiting device;

FIG. 10 shows a fourth embodiment in a representation according to FIG.

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

12 shows the dispenser according to FIG. 10 in a changed position of the

Limiting device;

FIG. 13, in a fifth embodiment, a dispenser according to FIG

Representation in Figure 1;

14 shows the enlargement of the area XIV in FIG. 13;

15 shows an enlarged detail corresponding to FIG. 14, relating to the arrangement of a modified limiting device;

16 shows an illustration essentially corresponding to FIG. 1, relating to a further embodiment in a first position; FIG. 17 an enlarged detail of area XVII in FIG. 16;

18 shows a representation corresponding to FIG. 16, but relating to a second position of the changeable limiting device;

19 shows the detail representation of the area XIX in FIG. 18;

20 shows a dispenser of a further embodiment in one

Longitudinal section, relating to a first position of the changeable Be limiting direction;

FIG. 21 shows the enlarged illustration of the area XXI in FIG

Removal of a cap;

22 shows a representation corresponding to FIG. 21, relating to a second position of the limiting device;

23 shows a further representation corresponding to FIG. 21, but relating to a further embodiment;

24 shows the embodiment according to FIG. 23 with the alignment of the limiting device in a second position.

Description of the embodiments

A dispenser 1 for arrangement on a storage container 2 is shown and described, initially with reference to FIG. 1.

[0032] The storage container 2 is formed in the illustrated execution examples as preferably substantially _Z-like body of ylinder, with a optionally central longitudinal axis x, which in the corresponding allocation position also penetrates the dispenser 1, preferably in the form of an axis of rotation.

The storage container 2 can have a storage chamber 3 for receiving a mass M to be dispensed. This storage chamber 3 can be delimited at the bottom by a follower piston 4.

The dispenser 1 can be inserted and fastened to the storage container 2 in the opening of the storage container 2 which points upward in a conventional set-up state of the storage container 2.

The dispenser 1 is essentially composed of a head piece 5 and a dispenser pump 6.

The dispenser pump 6 initially has a pump part P, here preferably in the form of a piston body 7 with a piston 8, and more preferably a pot part 9 with a pot bottom 44 and preferably a cylinder section 10. The piston 8 is received in the cylinder section 10 such that it can slide along the longitudinal axis x, a pump chamber 11 being formed between the piston 8 and the cylinder section 10 and further limited by the pot bottom 44 of the pot part 9.

The pot part 9 is preferably designed to be interchangeable to adapt to different storage containers 2, in particular different opening diameters and / or cross-sections of the storage container 2.

The pump chamber 11 connects an input channel 12 and an output channel 13, the two channels each being separable to the pump chamber 11 by an input soapy valve 14 and an output valve 15. The two preferably shaped as check valves valves 14 and 15 are preferably installed so that they open in the same direction, that is, in the dispensing direction.

Arranged between the piston part 7 and the cylinder section 10 is a restoring device 16, here preferably in the form of a cylinder spring, which exerts an elastic force. In the usual way, this can be a metal cylinder spring. As an alternative, a spring made of a correspondingly elastically resilient plastic material can also be provided here to implement an all-plastic dispenser. The reset device 16 is further preferably arranged so that it is supported in a preferably concentric arrangement to the longitudinal axis x at one end on the pot bottom 44 and at the other end acts against the head piece 5, here preferably given by an upper end wall of the piston part 7, such that the head piece 5 with the piston part 7 and the piston 8 is acted upon in the direction of a pump chamber enlargement, in order to refill the pump chamber 11 after a successful pump stroke in which the pump chamber volume is reduced.

The piston part 7 and the pot part 9 are each preferably essentially pot-shaped. They can be in engagement with one another and together limit the dispenser pump 6 to the outside, so that a capsule-like housing is formed. On a radial pot wall 17 of the pot part 9, at least one fastening projection 28 can be provided which, for example, can also be designed as an annular projection. This fastening projection 18 can serve to fix the position of the dispenser pump 6 in the installed state between the head piece 5 and the storage container 2. The head piece 5 has an extension height H in the non-actuated state, as is shown throughout the figures. This extension height H can be measured, for example, from a lower stop surface F for the piston part 7 in the never-pressed state. A change in the limiting device for limiting the pump stroke b results in a correspondingly lower extension height FF, as is shown, for example, in FIG. A change in the pump stroke b therefore corresponds to a change in the extension height H.

Due to the elastic resetting device 16, for example by the already mentioned and in some of the embodiments shown cylinder spring, but also by the elastic boundary wall 59 in the embodiment of Figure 24, for example, results in particular when the pump stroke b of a smaller pump stroke b is adjusted to a larger pump stroke b so that the reset device 16 tracks the head piece 5. The tracking is practically directly provided by the elastic pressure force, for example caused by the aforementioned cylinder spring or the membrane 50. Accordingly, the enlargement of the extension height H results automatically.

As can also be seen, the limiting device 27 acts between the pot part 9 and the head piece 5. In the embodiment of FIG. 1, the effect is between a pot wall 17 and the head part 5, as is the case with the embodiment of FIG. 7 or FIG. 12 In the embodiment of FIG. 13, the effect is concretely between an exchangeable part 37 connected to a pot bottom 44 and the head piece 5, the exchangeable part 37, as shown, being attached to an upwardly protruding cylinder section of the pot bottom. In the embodiment of FIG. 16, for example, the limiting device 27 acts between an inner surface of the outer pot wall and a stop surface formed on the adjusting part guided thereon for the head piece, as will be described in detail below.

A comparable solution is also given in the embodiment of, for example, FIG. 20, as will also be described in detail further below.

In the exemplary embodiments shown, the valves 14 and 15 are designed as so-called annular gap valves with an annular valve body, each of which covers an annular gap 19 or 20 of the input or output channel 12, 13. Due to the radially symmetrical design of the dispenser pump 6, a homogeneous dispensing behavior is achieved. However, the dispenser pump is not limited to radially symmetrical designs, but can also have any shape, for example square or polygonal, in cross section for example. Instead of the annular gap valves shown, other known check valves, for example flap valves, can also be used.

Furthermore, the piston 8 can be designed in one piece with the piston part 7. A kinematic reversal of the dispenser pump 6 with a reversal of the opening direction of the check valves is also possible.

The head piece 5 adjoins the dispenser pump 3, which has a dome-like actuating part 21 with a dispensing channel 22 and a dispensing orifice 23, an actuating surface 24, preferably transverse to the longitudinal axis x, and an actuating part wall possibly concentric to the longitudinal axis x 25th On the outside of the wall, preferably circumferentially, the actuating part 21 is guided over its actuating part wall 25 through the pot wall 17 of the pot part 9 in the axial direction.

The dispensing channel 22, which initially takes up the longitudinal axis x in its longitudinal extension in the middle of the illustrated embodiments, is never shown with reference to a cross-sectional view in which the longitudinal axis x is shown as a line, for example according to FIG. 1 with a preferably obtuse angle to the longitudinal axis x outwards and opens into the dispensing orifice 23. The dispensing channel 22 is here sealingly inserted into the output channel 13, with the piston 8, the piston part 7 and the dispensing channel 22 together with the actuating part 21 for the common method along the longitudinal axis x in the use position _Z usammenwirken. Correspondingly, the entire head piece 5 with the piston 8 firmly attached to it is supported via the resetting device 16.

With the insertion of the dispenser pump 6 or the dispenser 1 as a whole in the supply container 2, a lower edge 43 of the dispenser pump 6 with its input channel 12 dips so deep into the storage container 2 and thus into the mass M stored there that a direct Contact to the mass M to be donated is given. Thus, when the dispenser 1 is placed on the storage container 2, the mass M can spread through the inlet valve 14, which opens in the course of the exposure as a result of pressurization, into the pump chamber 11 for the first filling thereof.

As can also be seen from the illustration in FIG. 4, the dispenser 1, in particular the head piece 5, can be covered by a cap 26 in the non-use position. In this case, this is in the area of the pot wall 17 locked in place, optionally, as further preferred, with axial support on the fastening projection 18.

In addition, a limiting device 27 is provided to limit the axial displacement of the head piece 5 together with the piston 8, in particular in a position at a distance from the pot part 9. This limiting position, shown for example in FIGS. 1 and 2, is the position of maximum filling of the pump chamber 11.

Preferably also in the opposite direction with appropriate Druckbetäti supply of the head piece 5 with downward movement of the same in the direction of the pot part 9 is a limitation of Verla gability provided that defines the lowest piston position and thus the smallest pump chamber volume.

The limiting device 27 of all the embodiments shown in the drawings can be changed for the changeable limitation of the pumping stroke resulting in each case, this in particular with regard to the movement limitation of the head piece 12 with the piston 8 in the relaxation direction of the restoring device 16 and thus in the direction of a thereby defined maximum pump chamber volume. Alternatively or also in combination with this, the lowering movement of the head piece 5 in the course of dispensing mass M via the dispensing orifice 23 can also be changed in its limitation, whereby the usable pumping chamber volume between the deformations of the piston 8 in the pumping chamber 11 can also be changed .

For this purpose, the limiting device 27 can initially consist of an adjusting part 28 which, according to the illustration in FIGS. 1 to 3, according to a first embodiment, is on the outside of the pot wall 17 preferably above the fastening projection 18 with the head piece 5 cooperates. The adjustment part 28 is essentially ring-shaped, preferably configured concentrically to the longitudinal axis x, and cooperates with an external thread 29 pointing radially inward with an internal thread pointing radially outward in the region of the pot wall 17. With regard to the internal thread 30, it can be, for example, a two-stage thread.

The adjusting part 28 protrudes beyond the upwardly facing edge portion of the pot part 9 and forms a radially inwardly projecting collar 31 in the region of its free end. This collar surrounds the actuating part wall 25 of the head piece 5 and rests on a part formed on the actuating part wall 25 , radially outwardly projecting support collar 32.

The basic position viewed in the relaxation direction of the restoring device 16 according to FIG. 1, which corresponds to the suction position of mass M into the pumping chamber 11, is thus limited by stops by stops of the support collar 32 on the underside of the collar 31.

As can be seen from FIGS. 1 and 2, this results in a

Pump stroke b, which is defined by the free path of the support collar 32 between the collar 31 of the adjustment part 28 and the facing annular end face of the pot wall 17.

In Figure 3, a changed position of the adjustment part 28 is shown in which the adjustment part 28 is rotated about the longitudinal axis x, which causes a lowering of the adjustment part 28 in the direction of the fastening projection 18 of the pot part 9 as a result of the above-described thread engagement. In Figure 3, a position of the adjustment part 28 is shown in which the adjustment part 28 in a lowest position is spent, which speaks the transport position of the head piece 5 ent. The support collar 32 is tied here between the collar 31 of the adjustment part 28 and the pot wall 17. The pumping stroke b ′ here corresponds approximately to zero, with the result that the adjustment part 28 can be used in this illustration to secure the dispenser 1 during transport.

Between the positions of the adjustment part 28 shown in Figures 2 and 3, any intermediate position of the adjustment part 28 can be assumed to change the pump stroke b between a zero corresponding pump stroke and a maximum pump stroke. The adjustment part 28 can be locked in different rotational positions, for example, in order to determine the pump stroke found.

In an alternative embodiment according to the representations in FIGS. 4 to 6, the adjustment part 28 can also be arranged on the inside of the pot wall 17 between this pot wall 17 and the actuating part wall 25. The thread arrangement is accordingly provided internally with respect to the pot part 9. The function for changing the pump stroke b 'corresponds to that of the first exemplary embodiment, with a pump stroke b' set in FIG. 6 which is greater than zero but smaller than the pump stroke b according to the position in FIGS. 4 and 5. [0065] ] Also, according to the illustrations in FIGS. 7 to 9, an adjusting part 28 can be arranged in an annular groove 33 provided on the outside of the pot wall 12 so as to be rotatable about the longitudinal axis x. In the between tween the end face of the pot wall 17 and the lower surface of the adjustment part-side collar 31 and the adjustment part wall resulting annular space, a stop member 34 is arranged in this embodiment. According to the illustrations, this can be essentially annular around the longitudinal axis x. be designed to stretch. In addition, one or more stop parts 34 can also be arranged distributed over the circumference.

The stop part 34 is guided linearly on the adjustment part 28 in the direction of the longitudinal axis x, for which purpose a guide web 35 directed in the direction of the longitudinal axis x is formed on the inside of the wall of the distribution part 28 in the embodiment shown. This engages in a correspondingly shaped Lüh approximately groove 36 of the stop part 34 (compare in particular Ligur 8). A reverse design is also possible in this regard, with a web on the stop part being guided in a groove on the adjustment part. In the case of an annular configuration, the stop part 34 is provided with an external thread 29 projecting radially inward. With an arrangement of a plurality of stop parts 34 distributed over the circumference, they can alternatively have radially inwardly projecting projections.

The external thread 29 or the projections engage in an internal thread 30 embedded on the outside of the actuating part wall 25.

A rotation of the adjustment part 28 about the longitudinal axis x, preferably carried out by hand, leads to a linear dragging of the stop part 34, which means that a change in the pump stroke b can also be achieved as a result of this embodiment. In this embodiment, too, in Liguria 7 and 8 a maximum pump stroke b is set via the adjustment part 28 and in Ligur 9 a minimum pump stroke b ', which can be approximately zero here as in the first embodiment, so that, for example, a transport lock can also be achieved using this embodiment. Each intermediate position and correspondingly each pump stroke between the maximum pump stroke according to FIGS. 7 and 8 and the zero corresponding pump stroke according to FIG. 9 can also be set.

FIGS. 10 to 15 show two embodiments in which the limitation device 27 can be changed by exchangeable parts 37.

According to the representations in FIGS. 10 to 12, a generally approximately annular replacement part 37 is provided, which can be clipped into an annular groove 33 on the outside of the pot wall 17, for example. A collar 31 protruding freely over the annular end face of the pot wall 17 and protruding radially inward interacts with a radially outwardly protruding support collar 32 in the area of the actuating part wall 25 of the head piece 5 in a stop-limiting manner, so that a pump stroke b results as shown in FIG. The free end face of the pot wall 17 forms the lower limit for the displacement of the head piece 5 together with the piston 8.

In FIG. 12, an arrangement is shown in which an exchange part 37 is arranged which is shortened with respect to the length of extension in the direction of the longitudinal axis x compared to the exchange part 37 shown in FIG. 10, with a length a viewed in the axial direction which is obviously selected to be shorter than Length a of the exchangeable part 37 used in FIG. 10.

As a result of the shorter length a ', there is correspondingly a reduced pump stroke b' (compare FIG. 12).

In addition, a pumping stroke limitation, preferably a limitation in both directions, with the cooperation of limitation _In front of devices 27 between the piston part wall 38 and a guide wall 39 of the pot part 9 that encompasses this circumferentially around it. In this way, an internal limitation of the pump stroke that is not fundamentally recognizable from the outside can be achieved. For this purpose, the piston part wall 38 can have a projection 40 on the outside of the wall, which protrudes into a groove 41 formed on the inside of the guide wall 39 on the wall. The axial length of the groove 41 defines the maximum possible pump stroke b.

According to the exemplary embodiment shown, the guide wall 39, in particular the section 42 of the guide wall 39 having the groove 41, is designed as an exchangeable part 37 and can be assigned to a stump of the guide wall 39 on the cup part side. A clip or screw connection can be provided here, for example.

FIGS. 14 and 15 show two related replacement parts 37 or sections 42 with different lengths of the grooves 41 viewed in the axial direction for setting different pump strokes b and b '.

This also enables a simple adaptation of the pump stroke to result in a corresponding arrangement of an exchange part 37 within the dispenser 1.

FIGS. 16 to 19 show a further embodiment in which the limiting device 27, similar to the embodiment shown in FIGS. 4 to 6, is designed as an annular adjustment part 28 and between the confirmation part wall 25 of the head piece 5 and this actuation part wall 25 circumferentially comprehensive wall of the head part 9 is positioned. The adjusting part 28 also interacts in terms of thread with an internal thread 30 in the area of the pot part wall 17.

Furthermore, the adjustment part 28 is rotatably coupled to the head piece 5, so that a rotation of the head piece relative to the storage container 2 about the longitudinal axis x due to the rotary coupling and the thread-like engagement of the adjustment part 28 on the pot part 9 results in a linear displacement of the adjustment part 28 along the longitudinal axis x.

The rotary coupling can be achieved as a result of the inner wall of the adjustment part wall 45 formed, radially inwardly projecting driver ribs 46, which engage in assigned, axially aligned slot openings 47 in the area of the actuating part wall 25.

The driving ribs 46 can, as also shown, be at the same time decisive for the head piece 5 in the course of a push-down displacement of the head piece 5 for the output of a portioned mass M, for example, as also shown, due to the interaction with the the surface 48 of the actuating part wall 25 delimiting the slot opening 47.

In FIGS. 16 and 17, the adjustment part 28 is brought into a stop-limited first (lower) position. This limit stop can, as also shown, be given as a result of the formation of a stop step on the pot part 9. The second (upper) position (see Figs. 18 and 19) is also preferably limited by a stop.

According to the exemplary embodiment, the first (lower) position according to FIGS. 16 and 17 is the position in which a maximum pump stroke b er can be reached. The surface 48 of the slot opening 47 is in a non-actuated position The head piece 5 is positioned axially at a distance from the facing end face of the driver rib 46 of the adjustment part 28.

The second (upper) position shown in FIGS. 18 and 19 can, as also shown, be a position in which no pump stroke or only a minimal pump stroke b 'is permitted. The adjustment part 28 is displaced axially upwards over the thread so far that the surface 48 of the slot opening 47 on the headpiece side has no or only a minimal distance from the facing stop surface of the driver rib 46. This position can also serve as a transport position. By rotational displacement of the head piece 5, each intermediate position is the

Limiting device 27, in particular between the first and the second position, can be taken for the preferred stepless adjustment of the output amount of the mass M.

As can also be seen from the illustrations, the adjustment part wall 45 plunges as the pump stroke is reduced as a result of the adjustment of the limiting device 27 from an almost given hidden position in the first (lower) position according to FIGS. 16 and 17 into an axially over the facing upper edge of the pot part wall freely protruding position.

This can also be used to provide for example a scale or the like on the outside of the actuating part wall 25. Using the upwardly facing free edge 49 of the adjustment part 28, this scale can be read in the non-actuated basic position of the head piece 5. Figures 20 to 24 show dispenser 1 with a limiting device 27, in which the pump part P is designed essentially in the manner of a membrane 50.

The pot part 9 can centrally form a double-walled plug-in receptacle 51 with a central pot-like elevation, in the pot top 52 of which an inlet opening 53 is formed.

Between the storage chamber 3 and the head piece 5, the pump chamber 11 is provided for the portioned output of mass M. This extends in particular in the first position (starting position) of the first embodiment shown in Figures 20 to 22 substantially above the

Plug-in receptacle 51 of the pot part 9.

With further reference to the embodiment according to FIGS. 20 to 22, the pump chamber 11 can be delimited circumferentially to the longitudinal axis x at least over a vertical section by a radially inner side wall 54 of the head piece 5, as well as on the ceiling side by one as well the side wall 54 is formed in one piece and made of the same material with the head piece 5, the ceiling section 55.

A further circumferential delimitation that adjoins the side wall 54 essentially vertically downwards, as well as a vertically lower delimitation of the pump chamber 11, is preferably provided by a spring element 56 formed by the membrane 50.

In this embodiment, the dispensing channel 22 can be connected to the pump chamber 11 via an outlet opening 57 formed in the side wall 54. The above-described spring element 56 can, as is also preferred, be an injection-molded part made of a thermoplastic elastomer, optionally consisting of silicone.

The spring element 56 is initially shaped like a plate with reference to an unloaded position, which can more preferably correspond to the first position or the starting position according to FIGS. 20 and 21, with a plate bottom which in the starting position has a vertical section Legs 58 extending substantially horizontally. This horizontally oriented limb 58 merges in the area of its radially outer end, preferably of uniform material and in one piece, into a curvature directed vertically upwards in relation to the drawings, which further merges into an at least approximately vertically directed upward limb. This upward limb forms the further delimitation wall 59 for the pump chamber 11, correspondingly circumferentially to the longitudinal axis x. In the vertically upper area facing away from the curvature, the delimitation wall 59 merges into a holding projection 60 to the longitudinal axis x in the head piece 5 formed, vertically downwardly open groove-like mounting receptacle 61 be received. The holding projection 60 can, as is also preferred, be held in the holding receptacle 61 in a form-fitting and / or frictional connection.

From the leg 58, which essentially forms the plate bottom of the spring element 56 and extends horizontally in vertical section, an annular plug-in projection 62 extends vertically downwards. This engages in the groove-like plug-in receptacle 51 of the pot part 9 in a holding manner. Both the holding projection 60 and the plug-in projection 62 can, as is also preferred, be formed in one piece and of the same material with the plate-like shaped spring element section. In addition, a valve section 63 for forming the outlet-side valve 15 as well as a valve plug 64 for forming the soapy valve 14 at the inlet can be provided in one piece and made of the same material.

The valve section 63 can be formed in the region of an axially upper end of the holding projection 60 on this like a tab. This valve section 63 enters the dispensing channel 22 through an opening provided and, in the valve closure position, lies in front of the outlet opening 57 in a sealing manner.

The valve plug 64 is connected via webs 65 to the area of the leg 58, which extends horizontally in the starting position, and closes the inlet opening 53 in the manner of a valve in the starting position. Figures 23 and 24 show an embodiment in which just like that the pump part P is designed as a membrane 50. In this embodiment, the holding projection 60 of the spring element 56 is held in particular by a radially outer abutment on the side wall 54 of the head piece 5. The mounting receptacle 61 is essentially given by the side wall 54.

The holding projection 60 can have a support surface 66 that is exposed vertically upward. On this support surface 66 a cross-section bead-like, overall concentric to the longitudinal axis x annular projection can be formed, for the preferred cooperation with a Lip section 67 of the head piece 5 for forming the valve 15 on the outlet side.

The lip section 67 can essentially be designed as a flat part that extends essentially horizontally, in particular in an unloaded pre-assembly position. Here, as is also preferred, the lip section 67 can be formed in one piece and of the same material on a plug-in part 68 arranged on the head piece 5, which is held on the head piece 5 on the underside of the actuating surface 24.

In both embodiments of the representations in Figures 20 to 24 is by a linear downward displacement of the head piece 5 along the

Longitudinal axis x relative to the storage container 2 a reduction in the volu mens of the pump chamber 11 can be achieved and thus a portioned mass output via the dispensing channel 22 and the dispensing opening 23 can be achieved by opening the respective outlet valve 15. [00107] These two embodiments are preferably provided with a limiting device 27. A limiting device 27 according to the embodiment shown in FIGS. 16 to 19 is shown. In addition, the limiting devices 27 shown in the further FIGS. 1 to 15 can also be used in a dispenser 1 according to the embodiments in FIGS. 20 to 24.

Correspondingly, an annular adjustment part 28 is also provided here between the actuating part wall 25 of the head piece 5 and the pot part wall 17 surrounding this actuating part wall 25 circumferentially. Next, the adjustment part 28 is rotatably coupled to the head piece 5, so that a rotation of the head piece relative to the storage container 2 about the longitudinal axis x results in a linear displacement of the adjustment part 28 along the longitudinal axis x. In Figures 20, 21 and 23, the adjustment part 28 is brought into a limit stop first (lower) position. This is preferably the position in which a maximum pump stroke b can be achieved.

The second (upper) position shown in Figures 22 and 24 can, as also shown, be a position in which no pump stroke or only a minimal pump stroke b 'is allowed. The adjustment part 28 is accordingly displaced axially upwards. This position can also serve as a transport position.

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 a changeable limiting device 27 is provided for the changeable limitation of the pump stroke b and that a change in the pump stroke b corresponds to a change in the extension height.

A dispenser, which is characterized in that when the pump stroke b changes from a smaller pump stroke b to a larger one

Pump stroke b the reset device 16 tracks the head piece 5. A dispenser, which is characterized in that the pot part 9 has a pot bottom 44 and a pot wall 17, the pot bottom 44 delimiting the storage container 2 to the dispenser pump 6 and the pot wall 17 on the head part side stands up on the pot bottom 44, optionally for The locking connection with the storage container 2 is used, and that the limiting device 27 acts between the pot bottom 44, possibly on an exchangeable part 37 connected to the pot bottom 44, or the pot wall 17, and the head piece 5.

A dispenser which is characterized in that the limiting device 27 consists of exchangeable parts 37 which can be used optionally with regard to a desired pump stroke b and which have different dimensions with respect to different pump strokes b.

A dispenser, which is characterized in that the limiting device 27 consists of an adjustment part 28 which allows a larger pump stroke in a first adjustment position than in a second adjustment position.

A dispenser, which is characterized in that the adjustment part 28 cooperates with a stop part 34 which is linearly guided in the direction of the longitudinal axis x of the dispenser 11 on the adjustment part 28.

A dispenser, which is characterized in that the stop part 34 cooperates thread-wise with the head piece.

A dispenser, which is characterized in that the head piece 5 is rotatably coupled to the adjustment part 28. A dispenser, which is characterized in that the adjustment part 28 cooperates with the pot part 9 in terms of thread.

A dispenser which is characterized in that a changeable limiting device 27 is provided for changeable limiting of the pump stroke b.

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. The invention also relates 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 40 head start

2 storage container 41 groove

3 storage chamber 42 section

4 trailing piston 43 rim

5 head piece 44 pot base

6 Dispenser pump 45 adjustable part wall

7 piston part 46 driving rib

8 piston 47 slot opening

9 pot part 48 area

10 cylinder section 49 marginal edge

11 pumping chamber 50 membrane

12 input channel 51 plug socket

13 Exit channel 52 Pot cover

14 Inlet valve 53 inlet port

15 Downstream valve 54 side wall

16 Reset device 55 ceiling section

17 cup wall 56 spring element

18 Fastening protrusion 57 outlet opening

19 annular gap 58 legs

20 annular gap 59 boundary wall

21 Actuator 60 Retaining projection

22 Dispensing channel 61 holder holder

23 Dispensing nozzle 62 plug-in projection

24 actuating surface 63 valve section

25 wall of actuating part 64 valve plug

26 cap 65 bar

27 Limiting device 66 support surface

28 adjustment part 67 rib section

29 external thread 68 male part

30 internal threads

31 collar a, a 'catches

32 support collar b, b 'pump stroke

33 ring groove x longitudinal axis

34 Stop part F stop surface

35 Guide web H, H 'extension height

36 Guide groove M Dimensions

37 Exchange part P pump part

38 Partial piston wall

39 Guide wall

Claims

Expectations

1. Dispenser (1) for dispensing flowable, for example liquid or pasty masses (M) with a storage container (2) for receiving the mass (M), with a dispenser pump (6), wherein the dispenser (1) has a longitudinal axis (x ), the dispenser pump (6) also having an inlet and an outlet channel (12, 13) and a pump chamber (11) delimited on the inlet and outlet by valves (14, 15), and a head piece (5), wherein the head piece (5) has a dispensing orifice (23), a pump part (P) being movable relative to a pot part (9) against an elastic force of a restoring device (16) to achieve a pumping stroke (b) and the head piece (5) is movement-coupled to the pump part (P), so that a movement of the head piece (5) from a completely depressed position to an attainable drive height corresponds to the pump stroke (b), characterized in that a changeable limiting device (27) for changeable Limitation of the pump stroke (b) is seen and that a change in the pump stroke

(b) corresponds to a change in the extension height.

2. Dispenser according to claim 1, characterized in that when the pump stroke (b) changes from a smaller pump stroke (b) to a larger pump stroke (b), the resetting device (16) tracks the head piece (5).

3. Dispenser according to one of the preceding claims, characterized in that the pot part (9) has a pot bottom (44) and a pot wall (17), wherein the pot bottom (44) the storage container (2) to the dispenser pump (6) limited towards and the pot wall (17) rises head part soapy on the pot base (44), if necessary serves as a locking connection with the storage container (2), and that the delimitation Direction (27) between the pot bottom (44), optionally on an interchangeable part (37) connected to the pot bottom (44), or the pot wall (17), and the head piece (5) acts.

4. Dispenser according to one of the preceding claims, characterized in that the limiting device (27) consists of exchangeable parts (37) which can be used optionally with regard to a desired pump stroke (b) and with one another with regard to different pump strokes (b) have different dimensions.

5. Dispenser according to one of the preceding claims, characterized in that the limiting device (27) consists of an adjustment part (28) that in a first adjustment position it permits a larger pump stroke than in a second adjustment position.

6. Dispenser according to one of the preceding claims, characterized in that the adjusting part (28) cooperates with a stop part (34) which in the direction of the longitudinal axis (x) of the dispenser (11) on the

Adjusting part (28) is linearly guided.

7. Dispenser according to one of the preceding claims, characterized in that the stop part (34) thread-wise cooperates with the head piece.

8. Dispenser according to one of the preceding claims, characterized in that the head piece (5) is rotatably coupled to the adjusting part (28).

9. Dispenser according to one of the preceding claims, characterized in that the adjusting part (28) with the pot part (9) cooperates thread-wise.

10. Dispenser (1) for dispensing flowable, for example liquid or pasty masses (M), with a storage container (2) for receiving the mass (M), with a modular dispenser pump (6), wherein the dispenser (1 ) has a longitudinal axis (x), the dispenser pump (6) also having an input and an output channel (12, 13) and a pump chamber (11) delimited on the input and output sides by valves (14, 15) and a head piece ( 5), wherein the head piece (5) has a dispensing opening (23), the dispenser pump (6) can also be inserted into the storage container (2) and can be connected to the storage container (2) by a snap-in connection, the pump chamber also being connectable (11) is formed by a piston (8) and a pot part (9) which has a pot bottom (44) and a pot wall (17), the piston (8) being slidably received in the pot part (9), to achieve a pump stroke (b), with the pot part (9) continuing to outer wall since ig has fastening formations, for fastening cooperation with an inner wall of the storage container (2), wherein the pot part (9) is also designed to be interchangeable with the fastening formations for adaptation to different storage containers (2), with one between the piston (8) and the pot part (9) arranged resetting device (16) is provided and limiting devices (27) for limiting a resetting movement, which limiting devices (27) come into contact with one another at a maximum pump chamber volume, with the head piece (5) on the dispenser pump ( 6) is replaceable and has a dispensing orifice (23) and a dispensing channel (22), the dispensing channel (22) being insertable into the output channel (13) of the dispenser pump (6), with a further the dispenser pump (6) is inserted into the storage container (2) so large that a lower edge (43) of the dispenser pump (6) with its inlet channel (12) has direct contact with the mass (M) to be dispensed, characterized in that that a changeable limitation device (27) is provided for the changeable limitation of the pump stroke (b).