EP1295645A1 - Metering device provided with a pump - Google Patents

Abstract

A metering device with a pump device and an actuating handle assigned to the pump device is known. According to the invention, the actuating handle (20, 20a, 20b) is manufactured as a separate component and is attached to the pump device. Use for active pharmaceutical ingredients. <IMAGE>

Description

The invention relates to a metering device with a pump device and an actuating handle assigned to the pump device.

Dosing devices for media, their pumping devices are known can be operated manually using a corresponding operating handle are. Such actuation handles are in one piece on a corresponding Molded housing part of the pump device. This will in particular referred to DE 33 15 334 A1, from which the one-piece Formation of an operating handle on one as a nose olive trained housing body is known.

The object of the invention is a metering device of the aforementioned Way of creating a reduced manufacturing cost having.

This object is achieved in that the actuating handle as separate component is made and attached to the pumping device. This makes it possible to use the actuation handle as the last component to mount the pump device. The final assembly can in particular also done by the user so that it is possible to operate the handle to grab when the metering device is not assembled, so that a smaller packing volume can be achieved. The manufacturer of the dosing device does not have to do the assembly himself make.

In an embodiment of the invention, the actuating handle is by means of a Snap connection attached to the pump device. Preferably the locking connection designed as an inseparable connection. That kind of Connection between actuation handle and pump device allowed simple, in particular tool-free assembly, for example by the user himself. At the same time, however, it is suitable sufficient forces of the operating handle on the pump device transferred to. Due to the non-releasability of the connection between the actuating handle and the pump device, it is possible both an actuating force in the sense of effecting a discharge stroke as well as one acting in the opposite direction of force Initiate force. So not only can a discharge stroke be generated manually, but also a corresponding return stroke. At the same time, the Establishing the non-releasable connection also provides protection against subsequent Manipulation.

Embodiments of the invention are advantageous in which the actuating handle than at least partially surrounding the media store Shaped body is formed. For this purpose, the molded body according to preferred embodiment is a substantially cylindrical Basic form on. Alternatively, it is possible that the molded body deviates has of the cylindrical basic shape, for. B. a relief structure or instead of the purely cylindrical basic shape an im Cross-section oval or elliptical basic shape. One of the end faces the cylindrical basic shape be open. This one another end face opposite one another can at least be largely closed and an opening for placement have on the pumping device.

In such configurations, it is advantageous if the outer shape a metering device at least partially by the operating handle is determinable. It is changed in a simple way, without the structure of the metering device, the pump device or but something needs to be changed in shape. It is therefore particularly advantageous the separation of functional components and that for design relevant actuation handle so that different actuation handles optionally used for the same functional device can be. Only the separately mountable operating handle is designed in a different way. The changes in the design, both the color and the Shape. So different colors are possible, making dosing devices for different people or with different Content can be distinguished from one another. Multi-component injection molded parts with different haptic designs can be used particularly advantageously. Different ones can be used here Material components such as PP or TPE using different Extruder fed to an appropriately adapted injection mold be so that, depending on your needs, in particular smooth and velvety allow easy-grip areas to be created in the operating handle. As well it is conceivable, for example for children, that the shaped body is a colorful and / or to give a figure-like shape. Such designs are for Children particularly appealing and therefore a certain complementary Motivation for using the dosing device.

According to a preferred embodiment, it is provided that on a component the pump device encloses at least one discharge opening Protective cap is releasably attachable, the protective cap is so matched to the shape of the actuating handle that the Handle even when the protective cap is attached to the pump device is attachable. As a result, it is not necessary to install the Operating handle to remove the protective cap from the pump device.

It can be an advantage if the actuating handle is put on a discharge stroke is already being carried out. So much for the pumping device needs a so-called priming at the beginning of its use, before the medium is actually discharged, the Handle unconsciously already creates a discharge stroke, which the number of additional strokes required for priming is reduced becomes. Priming is filling the pumping chamber of the pumping device with media from the media store to ensure that actually a media discharge in the desired dosage by the Discharge opening takes place.

Fig. 1

zeigt in einem Längsschnitt eine Ausführungsform einer Dosiervorrichtung mit einer Pumpvorrichtung und einer Druckausgleichsvorrichtung,

Fig. 2

eine weitere Ausführungsform einer Dosiervorrichtung mit einem wandungsflexiblen Medienspeicher und einer Pumpvorrichtung ähnlich Fig. 1,

Fig. 3

die Dosiervorrichtung nach Fig. 2 in längsgeschnittener Darstellung,

Fig. 4

in vergrößerter, als Halbschnitt gezeigter Darstellung eine als Deckel dienende Aufnahmeeinheit der Dosiervorrichtung nach Fig. 3,

Fig. 5

in einem Längsschnitt eine Dosiervorrichtung ähnlich Fig. 1 und

Fig. 6

die Dosiervorrichtung nach Fig. 5 mit entfernter Betätigungshandhabe.

Further advantages and features of the invention result from the claims and from the following description of preferred exemplary embodiments of the invention, which are illustrated with the aid of the drawings.

Fig. 1

2 shows a longitudinal section of an embodiment of a metering device with a pump device and a pressure compensation device,

Fig. 2

1 another embodiment of a metering device with a wall-flexible media storage and a pump device similar to FIG. 1,

Fig. 3

2 in longitudinal section,

Fig. 4

3, in an enlarged illustration, shown as a half-section, a receiving unit serving as a cover of the metering device according to FIG. 3,

Fig. 5

in a longitudinal section a metering device similar to Fig. 1 and

Fig. 6

5 with the actuating handle removed.

1 has a closure cap 1, the on a media storage, preferably in the form of a bottle or can-shaped container, can be snapped on. For this is the cover 1 cup-shaped and it has on its inner circumference an unspecified ring shoulder on a corresponding one Ring flange in a neck area of the media store can be snapped on. In an upper area of the cover 1 a circumferential elastic seal, not designated, is provided, that when the cover 1 is snapped onto the neck of the media store is compressed and so a tight seal of the Media storage guaranteed. In one piece on the cover 1 is molded on a cup-like receiving part 2, which is opposite to the media storage, not shown, coaxial with a central longitudinal axis of the cover 1 protrudes upwards. The recording part 2 forms an outer, shell-shaped housing part for a subsequent Pump device described in more detail, which is part of the metering device 1 is. Also protruding in one piece from the closure cover 1, namely coaxially within the receiving part 2 is a fixed one Pump housing part 3 is provided, the coaxial to the central longitudinal axis the cover 1 is provided with a discharge channel 6, which both down to the media storage and up in Direction of a metering opening 18 is open. In a lower section the discharge channel 6 is a fundamentally known, preferably flexible Intake 7 used. An upper section of the discharge channel 6 is designed as a metering section 13 by this upper section starting from a step-like tapering of the discharge channel 6 a cylindrical dosing channel opposite the lower section of the discharge channel 6 represents a reduced diameter. The as a dosing channel designed metering section 13 is of an inner cylinder jacket 4 surrounded.

The inner one forms a radial distance from the inner cylinder jacket 4 Pump housing part 3 an outer cylinder jacket 5, which - like the inner cylinder jacket 4 - integrally formed on the cover 1 is. The outer cylinder jacket 5 is coaxial with the inner cylinder jacket aligned. Between the inner cylinder jacket 4 and the outer cylinder jacket 5 remains an annular displacement space 14, which will be discussed in more detail below and which a pump chamber counts.

Relative to the receptacle part that can be securely attached to the media storage 2 including the inner pump housing part 3 is a pump unit lifted. The stroke-movable pump unit has one outer pump housing part 8, with an inner pump piston unit 9 to 11 is firmly connected. The pump piston unit 9 to 11 is separate Made as a one-piece component and inside the outer Pump housing part 8 locked. The pump piston unit has one Piston body 9, which in an upper region has a cylinder space for forms a coaxially arranged, stroke-movable outlet valve 16. The Exhaust valve 16 is by a compression spring arrangement, in the present in Form of an unspecified helical compression spring, in the closing direction so pressurized that the piston-shaped outlet valve 16 the Closes outlet opening 18. The compression spring arrangement is inside of the piston-shaped outlet valve 16 and is supported a bottom of the cylinder space of the piston body 9. The cylinder room of the piston body 9 is in its upper edge region with a Provide all-round sealing lip, which is circumferentially close to the outer jacket of the piston-shaped outlet valve 16 nestles. Thereby is the cylinder space and thus also the receiving space for the compression spring arrangement against the ingress of a medium, especially one Liquid, sealed. The outlet valve 16 is also a filler formed by taking the inside of the outer pump housing part 8 almost completely filled. The piston body 9 is also a packing designed by its outer contour largely to the Inner contour of the outer pump housing part 8 is adapted.

In the piston body 9 there is a first section to the pump chamber associated outlet chamber 17 formed to the displacement space 14 and the metering section 13 is open. This first section is in its upper area is open radially to the outside and goes into one Annular chamber section of the outlet chamber 17, which between the Outer jacket of the piston body 9, the outer contour of the exhaust valve 16 and the inner contour of the outer pump housing part 8 is formed. By the snap connection of the piston body 9 in an annular The locking flange area with the outer pump housing part 8 is the annular chamber section closed axially downwards. To outlet opening 18 the outlet valve 16 closes the annular chamber section of FIG Outlet chamber 17.

In a lower region, the piston body 9 forms a coaxially inner one Valve piston 10, which together with the inner cylinder jacket 4th in the area of the metering section 13 an inlet valve designed as a slide valve forms for the pumping device. For this purpose, the valve piston 10 which is integrally formed on the piston body 9, in a lower one Area provided with an annular dosing lip 12, which is at a Immersion of the valve piston 10 in the metering section 13 tightly an inner wall of the metering section 13 forming metering channel snugly. The diameter of the dosing lip 12 is larger than that Diameter of the valve piston 10. The length of the valve piston 10 as well the stroke of the piston body 9 and thus the entire stroke movable Pump unit are dimensioned so that the dosing lip 12 in one upper, open position shown in Fig. 1 at a short distance is positioned above the metering section 13. In a lower, complete pushed down end position of the lifting pump unit is the dosing lip 12 in the step-like extension of the discharge channel 6 driven in, i.e. it is beyond the metering section 13 been moved down. Because the outside diameter of the dosing lip 12 is smaller than the diameter of the discharge channel 6 in the stepped expanded area and also the diameter of the Valve piston 10 is less than the inside diameter of the metering section 13, a medium exchange can take place in this lower end position of the pump unit between the outlet chamber 17 and the media store - via the intake manifold 7 -.

The valve piston 10 is coaxial and at a radial distance from a bell-like one Displacement piston 11 enclosed by a lower Sealing edge all around close to an inner wall of the annular Displacer 14 is present. The cross section of the bell-shaped Displacement piston 11 is on the cross section of the displacement space 14 adjusted so that in the downward moved end position the piston body leaves almost no dead space in the displacement chamber, since the displacer 11 in this position completely in the Displacement chamber 14 is immersed. Also the one between the outer wall of the valve piston 10 and the inner wall of the displacement piston 11 remaining annulus is in volume on body volume of the inner cylinder jacket 4 matched, which the remaining dead space volume with the pump unit moved down is further reduced. The piston-shaped outlet valve 16 is in the area its outer casing with several ring steps, the pressure application areas form to open the exhaust valve 16. The protective cap 19 has a bell shape which widens conically downwards via an upper molded section of the outer pump housing part 8 is turned over and on an annular shoulder shoulder of the pump housing part 8 axially comes to rest. The protective cap 19 is manually detachable the molded section of the pump housing part 8 snapped. The outside diameter the protective cap 19 is less than the maximum outer diameter of the pump housing part 8. The upper mold section of the Pump housing part 8 is designed as a nose olive for an application to allow a medium contained in the media storage in the nose. Preferably, the one stored in the media store Medium contain at least one active pharmaceutical ingredient.

On an outer jacket area of the outer pump housing part 8 an actuating handle 20 snapped on, at least on its top on two opposite sides, each with a finger rest is provided. 1 are the finger rests provided with profiles. For axially securing the actuating handle 20 is on the outer periphery of the pump housing part 8 circumferential locking web 21 is provided, the above at least one Locking groove is assigned in the corresponding inner edge portions of the Engage the actuating handle 20 axially. Preferably, the operating handle 20 on the pump housing part 8 by means of an unsolvable Snap connection snapped on, i.e. after the actuating handle has been snapped on axially 20 this is no longer from the pump housing part 8 removable without being destroyed.

Below the locking web 21, the pump housing part 8 has a cylindrical one Guide jacket on the in its lower edge area several, over the outer circumference of the guide jacket on the same Height distributed stop cam 23 is provided with a radially inwardly projecting, circumferential locking collar 24 of the or cup-like receiving part 2 cooperate. The locking cams 23 and the locking collar 24 form locking profiles that secure the axial of the movable pump housing part 8 on the fixed Ensure receiving part 2. The locking profiles 23, 24 form an axial retention of the pump housing part 8 against the Compressive force of a pump spring arrangement 15, which acts as a pump drive for a Resetting the stroke-movable pump unit into that shown in FIG. 1 Starting position serves. A manual push down Pump unit thus takes place against the pressure force of the pump spring arrangement 15. As can be seen from FIG. 1, the pump spring arrangement 15 outside the outer cylinder jacket 5 of the inner, fixed Pump housing part 8 arranged so that the pump spring arrangement 15 positioned outside of the pump chamber through which the medium flows is. The pump spring arrangement 15 can thus with the medium, for example one containing at least one active pharmaceutical ingredient Liquid, not in contact.

The actuating handle 20 has an annular securing extension 22, which projects downwards as a cylinder jacket and in which in FIG. 1 shown, upper end position of the pump unit, the receiving part 2 protrudes axially so far that it covers the area of the locking profiles 23, 24 overlaps. The distance from the outside of the receiving part to the inner wall the protective extension 22 is preferably less than the radial Extension of the locking profiles 23, 24 so that the rigid, annular Protective extension 22 a protection against loosening the locking profiles 23, 24 and thus a trigger protection for the pump housing part 8 forms.

Since the cover 1 in connection with the previously described Pump device tightly seals a container serving as a media store, pressure must be equalized for the corresponding pumping processes take place so as not to impair the function of the pumping device. In the illustrated embodiment, this is a pressure compensation device 25, 26, D provided in the sealing cover 1 is integrated. The pressure compensation device has one strongly tapering towards the outside, serving as a pressure compensation opening Nozzle bore D, the narrowest diameter of which is preferred Does not exceed 0.2mm to 0.3mm. This is a gas exchange guaranteed, however, a loss of fluid is due to the extreme small nozzle bore D minimized. This results in a reduced Evaporation. The reduced evaporation is particularly advantageous for the filter arrangement 25 additionally provided in FIG. 1. The filter arrangement 25 has a housing for unspecified a membrane-shaped filter 26. The housing is in one Corresponding receptacle of the cover 1 used and preferably glued into it or firmly attached in some other way this connected. The membrane-shaped filter 26 is in the illustrated Embodiment molded from the receiving housing and thus in this integrated. Alternatively, it is also possible to use the membrane-shaped one Laminate filter 26 on an upper end edge of the receiving housing. The membrane-shaped filter is preferably a PP / PTFE membrane or a TPE / PES membrane. The filter 26 serves to contamination of the medium in the media store to avoid by the through the nozzle bore D at a corresponding Pumping process as pressure equalization of atmospheric air drawn in is cleaned by the appropriate membrane. A water or Ingress of moisture is avoided by the filter arrangement 25.

The following is the function of the metering device shown in FIG. 1 described. That by the valve piston 10 in connection with the Dosing lip 12 and the metering section 13 formed inlet valve works with manual actuation of the actuation handle 20 as a slide, by the outer pump housing part 8 together with the pump unit 9 to 11 is moved down. Due to the fact that the dosing lip 12 with a complete stroke of the pump unit down below the metering section 13 and thus below the step-shaped Paragraph in the discharge channel 6 runs outside, a so-called priming allows. That means that through the outlet chamber 17, the displacement space 14 and the annular space between the inner Valve piston 10 and the outer displacement piston 11 defined Pump space of the pump device air during a lifting movement the pump unit down into the discharge channel 6 and thus in the intake port 7 and escape into the media storage. The corresponding suction takes place during the subsequent return stroke of the liquid medium. Due to the extremely small dead space volume within the pump chamber serving as the pump chamber A pumping device is preferably sufficient as a priming stroke, to ensure sufficient suction of the medium to be dispensed to achieve in the pumping chamber. The length of the stroke of the dosing lip 12 along the metering section 13 defines the metering volume. The defined, and from the rest of the discharge channel 6 tapered metering section 13 in Connection with the valve piston running downwards as a slide 10 enables even after priming is complete, i.e. to the complete filling of the entire medium path in the discharge channel 6 and one in the pumping or metering chamber of the pumping device particularly precise and reliable dosing.

A discharge process takes place as soon as the liquid pressure in the pump chamber, i.e. especially in the upper area of the outlet chamber 17, which acts on the piston-shaped outlet valve 16, that by the compression spring arrangement applied back pressure exceeds. The fluid pressure then presses the exhaust valve 16 against the pressing force of the Compression spring arrangement downwards, whereby via the outlet opening 18th the corresponding discharge process of the medium takes place. The outlet opening 18 is preferably nozzle-shaped for atomization of the applied medium. Of course, before a corresponding discharge process, the protective cap 19 is removed.

The dosing device shown in Fig. 1 consists of a few plastic components, in the present case from a total of only six plastic components. The cover 1 connects a first plastic component with the receiving part 2 and the inner pump housing part 3 The second plastic component is through the outer pump housing part 8 formed. The third plastic component is the pump piston unit 9 to 11. The fourth plastic component is the piston-shaped outlet valve 16. The fifth plastic component is the one with the finger rests Actuating handle 20 and the last plastic component is the Protective cap 19. To mount the dosing device, first of all piston-shaped outlet valve 16 together with that acting on it Compression spring arrangement used in the pump piston unit 9 and then the pump piston unit 9 together with the outlet valve 16 snapped into the interior of the outer pump housing part 8, whereby an upper end face of the exhaust valve 16 against the corresponding Valve seat pressed in the area of the outlet opening 18 becomes. Then the outer pump housing part 8 together with the pump piston unit 9 to 11 in the fixed plastic component axially inserted, whereby the locking and axial securing in Area of the locking profiles 23, 24 takes place. Now the operating handle 20 axially from above onto the outer pump housing part 8 snapped on, causing the snap connection and axial securing between Pump housing part 8 and receiving part 2 of the cover 1 covered and is secured. In the cover 1, the filter assembly 25 as well as the circumferential seal. Subsequently can the cover 1 on a corresponding media storage be placed tightly. Before axially fitting the outer one Pump housing part 8 on the cover 1 was the pump spring arrangement 15 inserted.

In the embodiment according to FIGS. 2 to 4, a pump device corresponds P of the pump device previously described with reference to FIG. 1, so that for a more detailed explanation of the pump device P on the detailed description of Fig. 1 is referenced. functionally identical Parts have the same reference numerals compared to the embodiment 1, but with the addition of the letter "a", Mistake. The following is only the differences of the pumping device P entered into the pumping device in FIG. 1. In addition, the remaining metering device, in which the pump device P is integrated is described. Significant difference from the embodiment 1 is that the pump device P as a separate unit Can be manufactured separately from the dosing device and detachable with it connected is. 2 to 4 is the Receiving part 2a also integrally with the inner pump housing part designed. The inner pump housing part, that of the pump spring assembly 15a is surrounded, however, together with the receiving part 2a one of a closure lid 28 for a container cup B is a separate unit. The closure cover 28 is sleeve or designed like a ring and has a recess into which the Receiving part 2a of the pump device P by means of a rotating one Ring flange is clickable. For this is an edge of the well provided with an annular locking point, which in FIGS. 2 and 3 recognizable, but is not specified. A dense and game-free Seat of the ring flange and thus of the receiving part 2a in the receiving recess the cover 28 is through an annular seal 29 guaranteed, which is positioned below the ring flange and on a plate rim of the ring-shaped receiving recess of the closure cover 28 rests. The closure cover 28 is a plastic part designed and with an upper edge area of the container cup B locked or firmly connected to it by crimping.

The closure cover 28 is below the plate rim of the receiving recess provided with an integrally molded profile ring 27, the as an extension to the closure lid 28 into the interior of the container cup B protrudes. As can be seen from FIG. 4, the profile ring with several parallel and spaced ring ribs 32 provided radially to a central longitudinal axis of the closure cover 28 protrude outwards. There are also several about Height of the profile ring 27 extended, vertically aligned ribs provided that are not shown in FIGS. 2 to 4. This Ribs are distributed over the circumference of the profile ring 27. The sectional view in FIGS. 2 and 3 is in each case by two Ribs pulled through.

An actuating handle 20a for the pump device P corresponds with regard to their pump actuation function of the actuation handle 20 1. The actuating handle 20a is also in the form of a cup Designed cylinder jacket that the container cup B over more than axially overlaps half of its height. The outer shell of the container cup B and an inner wall of a lower edge area of the Cylinder jacket 22a of the actuating handle 20a are corresponding Stop profiles 30, 31 provided that each other in the axial Grip in the positive direction. This will make for the actuation handle 20a ensures axial locking. Because the operating handle 20a - like the actuating handle 20 according to FIG. 1 - snapped onto the outer pump housing part of the pump device P. is, the stop profiles 30 and 31 at the same time Stroke limitation of the pump device P created the necessary Retaining force against the pressure force of the pump spring arrangement 15 offers.

The embodiment of FIG. 2 and the illustration in FIG. 3 are minor modified. So in the embodiment of FIG. 3 in the Receiving part 2a of the pump device P a receptacle for use a filter arrangement is provided, as can be seen from FIG. 1. If the cover 28 is therefore a tight seal of the container cup B offers, the container cup B can directly as a media storage serve for a corresponding liquid, because despite the dimensionally stable Container cup B through the one provided with the nozzle bore Recording, possibly with the additional use of a filter arrangement, adequate pressure equalization during the operation of the Pump device P is given.

2, however, is such a pressure compensation device not given for container cup B. Instead is a media storage S with flexible wall in the container cup B. intended. In the present case, the media store S is made up of one single or multi-layer film made of foil bags, the circumferential is tightly connected to the profile ring 27. Preferably, the Foil bag welded to the profile ring 27, the profiles of the profile ring 27, the surface for a tight welding of Enlarge the foil bag with the profile ring 27. This is a big one Safety of the welded joint as well as the tight seal of the foil bag with the profile ring 27 guaranteed. The one as media storage S serving foil bag is thus only for the pumping device P open, whereby the same pump and discharge function can be achieved is like in the embodiment according to FIG. 1. With each discharge process the volume of the media storage S decreases, which causes the film bag contracts. The flexible wall of the foil bag thus enables pressure and volume compensation within the media storage S with corresponding discharge processes of the pump device P.

5 and 6 is a metering device shown, the pumping device with the pumping device after Fig. 1 matches. Functionally identical parts of the dosing device are provided with the same reference numerals as in the embodiment 1, but with the addition of the letter "b". In terms of a more detailed explanation is given in the description of FIG. 1 directed. In the following, reference will only be made to those shown in FIGS. 5 and 6 Differences discussed in detail. Significant difference is that the receiving part 2b is similar to the embodiment 2 to 4 separately to a cover 1b is designed. The closure cover 1b is designed as a crimp cover, on a corresponding container neck of a media store is attachable. The mounting of the receiving part 2b together with the cover 1b, which is designed as a crimp cover, is made with the interposition an unspecified, circumferential elastic Poetry. The actuating handle 20b has a cup-shaped Protective extension 22b, which extends beyond the crimped cover Cap 1b is pulled down so that the protective extension 22b a crimping area of the closing cover designed as a crimping cover 1b axially covered. This will loosen the cover 1b from a corresponding container neck of a media store avoided as soon as the operating handle 20b on the outer Pump housing part 8b of the pumping device according to the illustration and Description according to Fig. 1 is snapped on. Since the protective extension Covered crimp area of the closure cover 1b, which is separately manufactured operating handle only then on the pump housing part 8b mounted when the cover 1b on a corresponding Container neck of a media store is crimped on. Because with already actuated handle 22b would no longer be a crimping process possible.

Claims (8)

Dosing device with a pump device and an actuation handle assigned to the pump device, characterized in that the actuation handle (20, 20a, 20b) is produced as a separate component and is fastened to the pump device. Dosing device according to claim 1, characterized in that the actuating handle (20 to 20b) is fastened to the pump device by means of a latching connection. Dosing device according to claim 1, characterized in that the actuating handle (20 to 20b) has a protective extension (22 to 22b) which forms a safeguard against mutual loosening of pump device components. Dosing device according to claim 2, characterized in that the actuating handle (20, 20a, 20b) is non-releasably locked to the pump device. Dosing device according to one of the preceding claims, characterized in that the actuating handle (20, 20a, 20b) is designed as a molded body which at least partially surrounds the media container. Dosing device according to claim 5, characterized in that the molded body has an essentially cylindrical basic shape, in particular one of the end faces being open and the opposite other end face preferably being essentially closed and having an opening for introducing the molded part. Dosing device according to one of the preceding claims, characterized in that a protective cap (19) surrounding at least one discharge opening is detachably fastened to a component of the pumping device, the protective cap being matched to the shape of the actuating handle (20 to 20b) in such a way that the handle also can be plugged onto the pump device when the protective cap is attached. Dosing device according to one of the preceding claims, characterized in that the actuating handle is designed as a multi-component injection molded part with areas of different haptic design.

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