WO2009103583A1

WO2009103583A1 - Suction pump for a dispenser unit and dispenser unit

Info

Publication number: WO2009103583A1
Application number: PCT/EP2009/050616
Authority: WO
Inventors: Petra Allef; Bernd Nauels; Markus Pielen; Marcel Veeger
Original assignee: Evonik Stockhausen Gmbh
Priority date: 2008-02-18
Filing date: 2009-01-21
Publication date: 2009-08-27
Also published as: EP2312982A1; DE102008002773A1; CA2712442A1; US20100301070A1; RU2010139155A; CN101917889A; MX2010007931A; AU2009216864A8; KR20110008012A; BRPI0905689A2; TW201008541A; AU2009216864A1

Abstract

The invention relates to a suction pump, which is implemented as a bellows pump having a fixed base area (4) and a head area (3) movable relative thereto, and is disposed on a supply container (2). The filling insert thus formed can be inserted in a dispenser housing (1). The essential feature of the bellows pump is the fact that guide means (8) are provided, which prevent the movable head area (3) from traveling in a direction which is not the valve preferential direction V. In contrast to the prior art, this allows the secure insertion and the error-free use of the bellows pump in a dispenser housing (1). Furthermore, the invention relates to a dispenser unit, in which a bellows pump according to the invention is used.

Description

description

SUCTION PUMP FOR A DISTRIBUTION UNIT AND DISTRIBUTION UNIT Technical area

The invention relates to a suction pump, which is in particular designed as a bellows pump and is provided for a donor unit for pasty, foamy or liquid output of a medium, in particular a liquid soap, a skin protection cream or other liquid cleaning or care product for the skin. The suction pump has fastening means for its sealing attachment to a storage container for the liquid medium and a pumping force in a pumping compressible elastic, an elastic wall having a pumping chamber on the one hand with the interposition of an outlet valve fluidly with an output means for dispensing a defined amount the medium is directly or indirectly connected and on the other hand with the interposition of an inlet valve with the reservoir fluidly directly or indirectly connected.

The invention further relates to a dispensing unit for dispensing a medium, in liquid, pasty or foamed form, wherein the medium is provided in particular liquid or pasty in the reservoir. These dispenser units have a dispenser housing into which a filling insert can be inserted. The filling insert preferably consists of a reservoir produced in the blow molding process and the suction pump attached thereto. Such filling inserts are usually inserted into the dispenser housing after opening a housing cover in such a way that the suction pump is gripped with its head region by the insertion movement of a threading device, often in the form of a so-called "catcher clip", and thus coupled with the actuation device may be a mechanical push button, for example, a so-called "push button", which is connected via a lever with the threading device. Alternatively, a non-contact operation may be provided, in which the user a Sensor triggers, in turn, causes an electric actuator to actuate the suction pump.

State of the art

Dispenser units of this type are known from EP 1711094 A.

Suction pumps in the above-mentioned type are also commonly known by the term bellows pump. The bellows pumps have a rubber chamber limited by the pumping chamber, which is usually compressed manually by squeezing, whereby the medium located in the pumping chamber is pushed out by this. Such bellows pumps have the advantage that they are particularly easy and inexpensive to produce.

The disadvantage of the known bellows pumps, however, is that they are only moderately suitable for use in dispensing devices, since the only easily implementable by the human hand crimping movement mechanically complicated and additional guide elements can be implemented, for example, a lateral emigration of the discharge opening avoid. Also, the use of bellows pumps is problematic when defined a precise amount of a medium must be delivered, since usually the pumping chamber to avoid damage to the elastic wall can not be completely compressed and so the volume of the output of the deformation geometry of the elastic wall dependent can.

Another disadvantage of the bellows pumps is that in connection with donor units, the onset of the filling inserts, which are formed from a reservoir and the associated suction pump, is difficult to carry out. When a filling insert is inserted into the unfolded dispenser housing, the threading device presses against a functional element of the pump to make the connection between the actuator or the actuator and the pumping means, for example, via the "catcher clamp." This insertion movement must reliably couple the mechanical coupling of the pump with the actuating device or the actuator even if it is not carried out very carefully, otherwise the donor would have no function.

When using bellows pumps, there is now the problem that can escape the access of the "catcher bracket" due to the elastic wall of the lower part of the pump.Thus, it can happen that the pump "cross" sets us by pressing the donor while the elastic wall is compressed, but the medium is discharged transversely to actually intended output direction in the dispenser housing. Even a partially successful threading is of course possible. It is obvious that in both cases a malfunction of the donor is the result.

Presentation of the invention

The object of the invention is therefore with respect to the suction pump to provide a suction pump with an elastic wall, which can be used in a dispensing device, in particular a dispenser unit with the greatest possible freedom from errors at the same time simple and inexpensive construction. With regard to the dispenser unit, it is an object of the invention to provide a dispenser unit in which a suction pump with an elastic pumping chamber can be used as error-free as possible.

The object with respect to the suction pump is achieved according to the invention in that guide means are provided which are arranged such that they are able to suppress migration of the elastic wall of the pump body transversely to the pumping direction during the compression of the pump body.

The object with respect to the dispenser is achieved according to the invention in that the housing has a threading device which is designed and arranged such that by the insertion of the filling insert in the final position of cooperating with the actuator head portion of the suction pump by the threading device is automatically taken during insertion, wherein a bending of the elastic pumping chamber is prevented by the guide means. By the suction pump according to the invention, the advantage of a conventional piston / cylinder pump can now be combined with a bellows pump. By providing the guide means, the compression movement is restricted to a preferred direction of the pumping movement. In a conventional dispenser this is, for example, the vertical direction, the reservoir is then hung with the suction pump down into the dispenser housing and the guide means are formed such that, despite the elastic wall, migration in one of the horizontal directions is prevented. The pump body can thus be compressed only in the vertical direction, so that even the frictional force when attaching the threading device to a head region of the suction pump can not lead to the head region being displaced in the transverse direction.

In a particularly simple embodiment of the suction pump, the pumping chamber is formed by the elastic wall and a head and a foot area. The foot area is upside down with upside down plenum and has the inlet valve on. This inlet valve is designed so that it is capable of sucking medium from the storage container into the pumping chamber during decompression of the pumping chamber and closing it during compression of the pumping chamber. In the head area, in turn, the outlet valve is arranged, that releases the medium during compression of the pumping chamber and closes upon decompression of the pumping chamber. In particular in the head region, but possibly also in the foot region, further functional elements, in particular for foaming the medium or for preventing dripping, can be provided.

In a preferred embodiment of the invention, the act

Guide means at least on the movable head portion and the foot portion is fixed relative to the dispenser housing. Here, the guide means ensure that, relative to the specified foot area, the head area can only be moved in the pump preferred direction.

To ensure a first protection against malfunction, it may also be sufficient to provide guide means, the only in one To raise the direction of an executive. In the case of the dispenser unit described above, for example, protection against emigration may already suffice in response to the insertion movement, so that here the guide "only" generates an abutment which opposes the insertion movement To increase the functional safety, however, a further, preferably complete, guidance of the head area over the entire movement range is preferred Head area in all directions transverse to the pump preferred direction.

The head region of the suction pump may be provided with a flange which protrudes outward in the manner of a flange and which is gripped by the threading device, in particular the catcher clip, when inserted into the dispenser housing Depending on the design of the wall, the head area may itself be dish-shaped or have a dish-shaped section, which is connected, for example, via a spacer to the part of the head area adjoining the elastic wall.

The guide means can be both internal and external

Be formed guide. In the case of the outer guide means, the suction pump on a pump body, on which the pumping chamber is arranged. In the simplest case, the pump body can be formed by the foot region, from which the guide means, for example in the form of guide rods, extend in the direction of the head region, where, for example, they can pass through bearing eyes arranged in the head region to form the guide.

Alternatively, of course, the guide means may also be formed by a wall of the pump body, which is accordion-like after the Art a telescopic pole can be pushed together. Finally, it is possible for the head region to have a piston-like outwardly projecting edge, which is guided in the preferred pump direction in the pump body which is then executed in the manner of a cylinder, whereby another part of the head region adjoins the actuating device for the piston-like region facing away from the pumping chamber , which protrudes from the cylindrical area in all positions of the head area. This can be, for example, a dispensing tube with a plate-like edge protruding laterally in the lower region, to which the threading device can be attached.

Alternatively, the head region may also have a cylindrical, in the direction of the foot region upwardly projecting wall portion which is connected to a plate-like region, which in turn is connected to the elastic wall of the pumping chamber. The cylindrical wall region of the head region, in turn, can then be guided either on the pump body or also on the foot region.

To secure the suction pump during transport of the

Foot area in this embodiment be designed so that it can be moved to a transport position. Here, the height of the cylindrical ring at least equal to the height of the pumping chamber, so that the foot portion can be moved to the upper edge of the ring, so that the entire pumping chamber is disposed within the cylindrical ring.

An alternative embodiment of a suction pump with transport lock has a foot area which extends like a bell in the direction of the head region, wherein the elastic wall of the pumping chamber is connected to the lower region of the bell-shaped side region of the foot part. To form the transport safety device, the entire elastic part of the wall of the pumping chamber can then be turned inside together with the head region, so that the head and foot regions abut each other substantially and the pump is put out of action.

Here, the threading can be configured so that by Einsetzbewegung not only an edge of the head part is taken and this is coupled with the actuator, but that at the same time by inserting the transport lock is disabled and the Einfädelhilfe the first time pushing back of such a large path of the head area causes the elastic wall portion of the Pump chamber is pushed back to the outside.

Alternatively or in addition to an outer guide, the

Guide means are also arranged inside a pumping chamber. For this purpose, for example, the head area may be connected to the foot area via telescopic rod-like guide rods which are arranged inside the elastic wall. This guide means may for example be arranged centrally within the pumping chamber, so that the telescopic rod is designed as a hollow rod or tube and has a lateral inlet for the medium to be pumped. Upon compression of the pumping chamber, the medium is then driven first through this lateral entry of the telescopic rod and then through the hollow telescopic rod itself to the outside. The valve of the head area can still remain in the actual head area or be arranged in the region of the lateral opening of the telescopic rod. Alternatively or additionally, further guide rods can be provided in the outer region of the pumping chamber.

A particularly advantageous embodiment of the invention used for

Forming the guide means the pushrods of the inlet valve and / or the exhaust valve. For this purpose, the respective valve is provided with a push rod, which has the valve means, so for example the sealing membrane. The push rod is extended beyond the region of the valve means and has, in this extended region, a guide section which is guided by guide means which are arranged on the pump body or, depending on which valve has the leading push rod, on the head region or the foot region , For this purpose, the respective part of the guide preferably bearing eyes, in which the guide portion in Pump preferred direction is movably mounted.

A further preferred embodiment uses a common push rod for both valves. This common push rod is preferably formed as a central, the pumping chamber passing through push rod, wherein on the side of one of the valves, the switching element is fixedly connected to the push rod and on the side of the other valve, the switching element is movably mounted on the push rod. Here, for example, on the exhaust valve side, the switching element of the valve can be firmly connected to the push rod, while the switching element is movably guided on the side of the inlet valve on the push rod, so that both valves can switch pressure controlled independently. The push rod will then extend upon compression of the bellows valve in the reservoir or in an intermediate region arranged between the suction pump and the reservoir.

The aforementioned embodiment can be prepared, for example, characterized in that the switching element of the inlet valve has a sleeve-like part through which the push rod is guided longitudinally movable. The mobility of the switching element may be limited relative to the push rod in both directions by stops, which then at the same time the compression movement of the bellows pump is set at the same time. This can for example avoid damage to the elastic wall material due to excessive deformation. In this embodiment, the storage of the push rod is preferably realized by the valve seat of one or both valves, ie the inlet valve and the dispensing valve. Alternatively or additionally, the push rod can also be movably mounted inside or outside the pumping chamber in pump preferred direction to form an (additional) guide.

The exhaust valve may be provided in all embodiments with a plunger which extends in the direction away from the pumping chamber direction and in the lower region has a plate portion, with the actuator of the dispenser can be coupled. It does not necessarily have to be a plate area, the coupling can also be made via any other mechanical device.

As actuating device come in connection with the present invention, all forms of valve actuation devices into consideration, in particular a mechanical pushbutton or an electric actuator that can be triggered by a sensor. The push rod of the outlet valve, which extends away from the pumping chamber, is preferably designed as a hollow cylinder, so that the medium can be supplied to the output through this push rod. So here the push rod forms the output channel for the medium. To form an additional drip protection can be provided in the output channel, regardless of whether it is formed by the push rod or is designed as a separate channel, an additional seal or an additional valve means, in which case about a diaphragm seal comes into consideration.

The dispenser unit according to the invention comprises a housing into which the filling insert can be inserted. This filling insert comprises, as already described above, the storage container and the suction pump arranged therein. The suction pump in turn is designed as a bellows pump and has a head portion which is displaceable in the direction of a foot region for transmitting an actuating force, regardless of whether it is applied via an electric actuator or a "push button", the suction pump having guide means Usually, the filling insert will be inserted downward with the suction pump down in the housing, so that the pump preferential direction is the vertical direction downwards, that is, output medium directly from the discharge point, for example, to the hand of the user can drip.

Preferably, the dispenser unit has a threading device, which in

This clip is a U-shaped clip with rounded or bent legs which, upon insertion of the filling insert, forms an edge of the movable part of the suction pump, in particular an edge of the suction pump Engage behind the head area, wherein the threading device is in turn functionally coupled to the mechanism of the housing such that a movement of the actuating device causes a movement of the coupled to the threading device edge of the suction pump. As a result, in the present case, the elastic pumping chamber is compressed and the medium expelled from this pumping chamber in the pump preferred direction.

If the suction pump has the transportation lock described above, the dispenser unit can have an additional threading aid, which cooperates with a further threading element on the movable part of the suction pump. This additional threading aid can bring about the first way of deactivating the transport lock, for example the outward swirling of the elastic wall of the pumping chamber, in which the additional threading element slides along the guide surface of the further threading aid through the insertion movement and thereby the corresponding displacement of the head region into the Operating position causes.

Alternatively, the additional Einfädelhilfe be preceded by the first Einfädelhilfe in which, for example, the "catcher clip" has very strong bent in the pump preferential leg.

The suction pump may finally have a drip protection, which is arranged behind the pumping chamber. Such drip protection may be formed by a membrane seal, which may be formed, for example, de heart valve with several, for example, three sails, the sails are folded together in a closed state to a closed circuit and on the occurrence of a, the medium expelling pressure in the discharge direction be pressed apart. For this purpose, the sails are connected to the other sails each facing away from the edges of the wall of the output channel and overlap preferably in the idle state with the respective other edges.

Now, if pressed medium through this seal, the flap-like sails open in the direction of the wall and the medium can flow through. In case of decreasing pressure, however, close due the elastic restoring forces the sails again. By this, the flow direction oppositely directed movement while the medium is then sucked back into the output channel, so that dripping can be avoided.

Of course, other measures to form a drip protection or a similar function can be provided. This can be, for example, siphon-like reversals of the flow direction in the output channel or valves or flaps, for example, by a spring loaded in the closing direction and switchable by the pumping pressure to be.

Further features and advantages of the invention will become apparent from the

Subclaims and from the following description of preferred embodiments with reference to the drawings.

Brief description of the drawings

In the drawings:

1 is a side view of a dispenser unit according to the invention,

Fig. 2 is a simplified representation of a suction pump according to the invention in section and

FIG. 3 shows a further embodiment of a suction pump according to the invention. FIG.

Best way to carry out the invention

FIG. 1 shows a dispenser unit with a dispenser housing 1 which can be filled via a filling insert. The filling insert is formed by a suction pump and a reservoir 2, to which the suction pump is attached. The suction pump in turn is designed as a bellows pump, which has a head region 3, a foot region 4 and an elastic wall 5 arranged therebetween.

2 shows a first embodiment of the suction pump is shown schematically in an enlarged view. This suction pump is designed as a bellows pump and has a head portion 3, which is movably held relative to the dispenser housing 1. The head region 3 is connected to the foot region 4 via the elastic wall 5. In order to prevent a lateral emigration of the movable head portion 3, the head portion 3 is additionally guided by guide means 8, wherein the guide means 8 are formed here as an external guide means 8, which are connected on the one hand with the foot region 4 and on the other hand passed through bearing eyes of the head portion 3. In this way it is prevented that upon insertion of the filling insert into the dispenser housing 1, the head portion 3 emigrates the insertion direction, so that a secure threading is possible and thus a malfunction of the bellows valve can be avoided.

Way (s) for carrying out the invention

FIG. 3 shows a further embodiment of a bellows valve, in which the guide means 8 are designed as internal guide means 8. For this purpose, the inlet valve and the outlet valve on a common push rod 6, wherein the valve means of the two valves, here the inlet valve of the bellows pump, are arranged on a movably mounted on the common plunger sleeve 6, so that both valves independently of each other their respective function able to fulfill.

The bellows pump shown here additionally has a push rod 6, which is formed as a hollow cylinder and has a lateral inlet opening in the region of the pumping chamber. By way of this, it is possible for the medium located in the pumping chamber 7 to be driven out in pump preferred direction V when the elastic wall 5 is compressed, the lateral opening and the push rod 6 designed as a hollow rod pass.

[0043]

[0044] List of Reference Numerals:

[0045] 1 dispenser housing

[0046] 2 storage containers

[0047] 3 head area

4 foot area

5 Elastic wall

[0050] 6 Common plunger of the intake and exhaust valves

7 pumping chamber

8 guide means

[0053] V valve preferred direction

Claims

claims

1. Suction pump, in particular designed as a bellows pump, for a dispenser unit for the pasty, foamy or liquid output of a medium, in particular for dispensing a liquid soap, a skin protection cream or other liquid cleaning or care product for the skin, with a fastening means for sealing attachment the suction pump to a reservoir (2) for the liquid medium and having a pumping force elastically compressible in a pumping direction, an elastic wall (5) having pumping chamber (7), on the one hand with the interposition of an outlet valve fluidically with an output means for outputting a defined amount of the medium is directly or indirectly connected and on the other hand with the interposition of an inlet valve with the reservoir (2) fluidly directly or indirectly connectable, characterized in that guide means (8) are provided, which are so are orders that they are able to suppress migration of the elastic wall (5) of the pump body transversely to the pumping direction during the compression of the pump body.

2. Suction pump for a dispenser unit for the pasty, foamy or liquid output of a medium according to claim 1, characterized in that the pumping chamber (7) movable due to the pumping movement in the pumping direction, the exhaust valve having head portion (3), a non-movable in the pumping direction , the foot valve (4) comprising the inlet valve and the elastic wall (5) arranged between the head section (3) and the foot section (4), which engage with the head section (3) and the foot section (4) with the exception of the inlet valve and the outlet valve closed pump chamber (7), wherein the guide means (8) at least on the movable head portion (3) act.

3. Suction pump for a dispenser unit for pasty, foamy or liquid dispensing of a medium according to claim 2, characterized in that the head portion (3) has a flange outwardly projecting edge for connection to an actuator of a dispenser housing.

4. Suction pump for a dispenser unit for the pasty, foamy or liquid output of a medium according to claim 3, characterized in that the head region (3) has a to the pumping chamber (7) adjacent, in particular plate-shaped wall portion, wherein the flange outwardly projecting edge arranged for connection to the actuator of the dispenser housing on the wall portion or connected via a spacer to the wall portion.

5. Suction pump for a dispenser unit for pasty, foamy or liquid dispensing of a medium according to one of the preceding claims, characterized in that the pumping chamber (7) is arranged on a pump body, wherein the guide means (8) arranged by a, on the pump body outer guide are formed, which lead at least parts of the pumping in the direction of the movable portion of the pumping chamber (7) during pumping movement in the pumping direction.

6. suction pump for a dispenser unit for the pasty, foamy or liquid output of a medium according to the preceding claim, characterized in that the pump body comprises a pump chamber (7) surrounding the ring, wherein the head portion (3) from a middle, with the elastic Wall (5) connected part and an outer, hollow cylindrical wall part is formed, which is guided on the outside or the inside of the ring in the manner of a telescopic connection.

7. Suction pump for a dispenser unit for pasty, foamy or liquid dispensing of a medium according to one of the two preceding claims, characterized in that the foot region (4) is displaceably mounted for the displacement of the entire pump from a transport position to a use position within the ring, wherein the height of the ring at least equal to the height of the pumping chamber (7).

8. Suction pump for a dispenser unit for pasty, foamy or liquid dispensing of a medium according to one of claims 5 or 6, characterized in that the foot region (4) extending from a central region and a bell-like in the direction of the head region (3), wall-shaped side region is formed, wherein the elastic wall (5) is connected at the lower edge of the side region with the foot region (4) and to form a transport lock the head area (3) by inwardly invert the elastic wall (5) is displaceable between the side region.

9. Suction pump for a dispenser unit for pasty, foamy or liquid dispensing of a medium according to the preceding claim in conjunction with claim 3 or 4, characterized in that the outer guide means (8) are arranged parallel to the pumping direction guide rods, between which the Pumping chamber (7) is held transversely to the pumping direction.

10. Suction pump for a dispenser unit for the pasty, foamy or liquid output of a medium according to the preceding claim, characterized in that the head region (3) has at least one, laterally projecting and at least one bearing eye having guide region, wherein the guide means (8) of Guide rods are formed, which pass through the bearing eye and along which the bearing eye and thus the head portion (3) is guided during the pumping movement.

11. Suction pump for a dispenser unit for pasty, foamy or liquid dispensing of a medium according to one of the preceding claims, in particular according to claims 1 to 4, characterized in that at least part of the guide means (8) are designed as internal guide means (8) which are arranged within the pumping chamber (7).

12. Suction pump for a dispenser unit for the pasty, foamy or liquid output of a medium according to claim 11 in conjunction with claim 2, characterized in that between the head area (3) and the foot area (4) at least one, the head and the foot area (4) is arranged to form the guide means (8) interconnecting telescopic rod.

13. Suction pump for a dispenser unit for pasty, foamy or liquid output of a medium according to claim 12, characterized in that the telescopic rod is arranged centrally within the pumping chamber (7) and formed as a hollow rod, wherein the medium is conveyed at least by the telescopic rod ,

14. Suction pump for a dispenser unit for pasty, foamy or liquid dispensing of a medium according to claim 11 in conjunction with claim 2, characterized in that the guide means (8) is formed by a push rod of the inlet valve or the outlet valve, wherein the push rod comprises the valve means at least partially and beyond the valve region at least with a guide portion is extended into the pumping chamber (7) and the guide portion for the formation of the guide means (8) in the suction pump is movably mounted in the pumping direction.

15. Suction pump for a dispenser unit for the pasty, foamy or liquid dispensing of a medium according to the preceding claim, characterized in that the inlet valve and the outlet valve have a common, the pumping chamber (7) passing through the push rod (6), wherein a switching element of the exhaust valve is fixedly connected to the push rod (6) and a switching element of the intake valve is movably held on the push rod (6).

16. Suction pump for a dispenser unit for pasty, foamy or liquid output of a medium according to the preceding claim, characterized in that the switching element of the inlet valve has a sleeve-like part through which the push rod (6) is guided longitudinally movable, wherein the mobility of the switching element is limited relative to the push rod (6) by stops in both directions.

17. Suction pump for a dispenser unit for pasty, foamy or liquid dispensing of a medium according to one of the two preceding claims, characterized in that the storage of the push rod (6) is realized by the valve seat of the inlet valve and / or the outlet valve.

18. Suction pump for a dispenser unit for the pasty, foamy or liquid dispensing of a medium according to one of claims 15 to 17, characterized in that the push rod (6) is movably mounted inside or outside the pumping chamber (7) in the pumping direction.

19. Suction pump for a dispenser unit for the pasty, foamy or liquid dispensing of a medium according to one of the preceding claims, characterized in that the outlet valve, the switching element having forming plunger and a plate area arranged underneath, wherein the plate area can be coupled to an actuator of a dispenser and the actuating force of the actuating device is able to apply to the elastically compressible pumping chamber (7).

20. Suction pump for a dispenser unit for the pasty, foamy or liquid dispensing of a medium according to any one of the preceding claims, characterized in that the push rod of the outlet valve is formed as a hollow cylinder and the delivery of the medium takes place through the discharge channel arranged in the push rod.

21. Suction pump for a dispenser unit for pasty, foamy or liquid dispensing of a medium according to one of the preceding claims, characterized in that in the output channel at least one additional valve or sealant, in particular a membrane seal to form an additional drip protection is arranged.

22. Dispenser unit for the foam-like or liquid dispensing of a particular liquid or pasty medium with a suction pump according to one of the preceding claims, characterized in that the dispenser comprises a housing into which a filling insert can be inserted, wherein the filling insert of the reservoir (2) and which is formed with the connected suction pump and the dispenser has an actuating device which communicates with a part of the movable head region (3) of the suction pump for transmitting an actuating force when the dispenser is filled.

23. Dispenser unit according to the preceding claim, characterized in that the housing has a particular in the form of a U-shaped bracket with rounded or bent legs threading device which is designed and arranged such that by inserting the filling insert into the final position of the head portion (3) of the suction pump cooperating with the actuating device is grasped automatically by the threading device during insertion, bending of the elastic pumping chamber (7) by the guide means (8) being prevented.

24. Dispenser unit according to the preceding claim with a suction pump according to claim 7, characterized in that a further threading aid is provided, which first comes with inserting the filling insert with a, with the foot area (4) threading element engages, wherein the further threading aid and the threading element are formed such that by the insertion movement the threading element slides along a guide surface of the further threading aid and thereby causes the displacement of the suction pump from the transport position into the position of use.

25. Dispenser unit for the foam-like or liquid dispensing of a liquid medium according to one of the preceding claims, characterized in that the actuating force is applied directly or indirectly via an actuating button on the dispenser housing (1), wherein the actuating button is designed such that a triggering of the Actuating key generates an actuating force of an actuating means, which is connected to the head portion (3) of the suction pump such that the actuating force to the head portion (3) is transferable.

26 dispenser unit for the foam-like or liquid output of a liquid medium according to the preceding claim, characterized in that the actuating button is a non-contact switching sensor and the actuating means is an electrically switchable via the sensor actuator that directly or via a lever mechanism on the head area ( 3) works.