EP1104336A1

EP1104336A1 - Dosage dispenser

Info

Publication number: EP1104336A1
Application number: EP99952420A
Authority: EP
Inventors: Anton Brugger
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-08-14
Filing date: 1999-08-16
Publication date: 2001-06-06
Anticipated expiration: 2019-08-16
Also published as: ES2274644T3; EP1104336B1; ATE344106T1; JP2002522187A; DE59909249D1; DE19837034A1; US6464107B1; WO2000009270A1; AU6464899A; DE19981527D2; JP4184605B2

Abstract

A proportioning dispenser for proportioning at least two components which are each supplied via a pump unit from an associated accommodating compartment is disclosed. The adjustment of the mixing ratio is effected via a transmission member the point of application of which is adjustable with respect to the two pump units.

Description

description

DOSAGE DISPENSER

The invention relates to a metering dispenser for metering at least two components according to the preamble of patent claim 1.

A dosing dispenser is known from EP 07 55 721 A2 and DE 198 18 434, in which the mixing ratio of two pasty or liquid fluid components is infinitely adjustable. Such a metering dispenser can, for example, be used particularly advantageously as a sun milk dispenser in order to mix two sun milk components with a sun protection factor of 1 and, for example, 25, so that the sun protection factor can be set continuously in the range from 1 to 25. This new dispenser is a great relief for the consumer because he can choose the sun protection factor depending on the sun exposure and the habituation of the skin and no longer has to carry several containers with different sun protection factors. The subject of DE 198 18 434 represents a further development of the metering dispenser disclosed in EP 07 55 721 A2, a reduction in the axial length of the metering dispenser being made possible by a special design of the cartridges and the pump mounting.

In the solutions proposed in EP 0 755 721 A2 and DE 198 18 434, the metering dispenser has two pumps, each of which is assigned a replaceable cartridge, each of which contains a type of sun milk (for example sun protection factor 1 or sun protection factor 25). The pumps are operated via two eccentric levers that are operatively connected to a pump or nozzle head, which is stored in a housing of the dispenser and is operated by the consumer.

The mixing ratio is adjusted by adjusting the pump piston stroke. The pumps are pivoted so that the lever length of the eccentric lever acting on the pump can be adjusted. This lever length is determined by the distance between the pivot bearing and the point of application of a pump head on the eccentric lever. The adjustment takes place via a link disc connected to a rotary knob, the link guide of which guide two link pins of a guide bracket. This engages around the two pumps, so that their simultaneous pivoting is ensured. The swivel movement of the pumps is made possible by a ball joint.

With regard to further details of this dispenser, reference is made to DE 198 18 434.4; To this extent, full reference is made to the disclosure content there.

The known dispensers have proven themselves in practice; however, the lack of detail still holds to them that the setting mechanism for setting the mixing ratio has a comparatively complicated structure. The need to pivot the two cartridges in the ball joints is comparatively complex and expensive.

In contrast, the invention has for its object to provide a metering dispenser that has a structurally simple and reliable adjustment mechanism for the individual pumps.

This object is achieved by a dispenser with the features of claim 1. According to the invention, the pump units are actuated by a transfer element that can be given away or displaced, the pivot axis of which can be displaced relative to the actuating elements of the pump unit - for example the displacers. This makes it possible to change the point of application of the transmission element on the pump units and thus their stroke by changing the relative position of the swivel axis to the pump units. The position of the swivel axis relative to the pump units is selected so that an opposite change is brought about, so that only the dosage ratio of different components to one another is adjusted, while the total delivery rate preferably remains essentially constant. However, it is also conceivable to adjust the total delivery volume by adjusting the swivel axis. The two components can be discharged mixed or unmixed.

The solution according to the invention has a much simpler structure compared to the dosing dispensers described at the outset, since the pump units no longer have to be articulated in the housing, so that the proportion of the movable components is reduced. Due to the upright arrangement of the pump units, the dosing dispenser can be made much more compact than the previously described constructions.

In principle there are two equivalent alternatives for adjusting the swivel axis. On the one hand, the pivot axis can be formed on the transmission element, so that the stroke is adjusted by rotating or shifting the transmission element and the pivot axis. Alternatively, the transmission element can be rotatably received in the housing, while the - 4th -

Transmission element supporting pivot axis is rotated or shifted.

By adjusting the swivel axis with respect to the pump units, the transmission element practically performs a wobble movement with respect to the pump units during the adjustment process, the point of application of the transmission element on the pump units being changed with respect to the swivel axis.

In both variants, the transmission element is suitably pretensioned with an end section against the pump units, while a section of the transmission element that is spaced apart is mounted in the housing via the pivot axis. The pivot axis can be mounted or fastened in a rotatable or displaceable part of the housing.

It is particularly advantageous if the swivel axis is received in a rotatable housing head of the dispenser.

According to the invention, it is preferred if the transmission element is plate, disk or ring-shaped.

In particular in the variant in which the pivot axis can be rotated together with the housing head, it is preferred if the housing head has an opening at a distance from the axis of rotation through which a part of the transmission element extends. This creates a handle for pivoting the transmission element in a simple manner. ~ o -

It is particularly advantageous if, in this exemplary embodiment, the dispenser nozzle is arranged diametrically to the handle.

In the prior art described at the beginning, the components had to be guided to the mixing chamber via hose connections due to the pivotability of the pump units. By contrast, the concept according to the invention makes it possible to design the outlet and inlet valves assigned to the pump units in chambers which are connected to the pump units via fixed housing channels. It is preferred if the outlet valves of the pump units open into a common outlet chamber, while the inlet valves arranged between the pump unit and the receiving compartment are each arranged in a separate inlet chamber.

The metering dispenser can be designed to be particularly compact with a small axial length if the aforementioned chambers are arranged in the area between the pump units, so that the mixture can be removed, for example, from the center of the common outlet chamber.

In the variant in which the transmission element is received in a rotationally fixed manner in the pump housing and the pivot axis is rotated or shifted relative to the transmission element, the displacers of the pump units, for example the pistons of a piston pump, can be connected to the transmission element in such a way that this at least part of the outlet chamber forms. Ie, in this variant, the transmission element is designed as a hollow body, in which the outlet valves of the individual pump units may be arranged. The mixture can then be withdrawn from the center of the transfer element. The pump units can be designed as piston pumps, as bellows pumps or in any other design.

Depending on the viscosity of the components, the receiving compartments can be implemented by cartridges (as in the prior art described at the beginning), as a bag or as a bottle with an integrated suction hose. The latter variant can be used particularly advantageously with liquid media.

In special applications, it can be advantageous if the receiving compartments, for example the cartridges, are mounted axially displaceably in the housing and the adjustable transmission element acts on the receiving compartments, so that the pump units are driven via the displaceable cartridges. In other words, in this exemplary embodiment, the displacers of the pump units are fixedly accommodated in the housing, while the cylinders which delimit the displacer spaces together with the displacers are connected to the axially displaceable accommodating compartments, so that displacement or enlargement of the displacer space takes place. This variant practically represents a kinematic reversal of the conventional drive principle with movable displacers.

Other advantageous developments of the invention are the subject of the further subclaims.

Preferred exemplary embodiments of the invention are explained in more detail below with the aid of schematic drawings. Show it:

FIGS. 1A to 1F show a basic illustration of the adjustment concept according to the invention, in which the pivot axis is adjustable relative to the pump units; FIGS. 2A, 2B show an exemplary embodiment in which the transmission element is accommodated in the pump housing in a rotationally fixed manner and the pivot axis can be adjusted relative to the transmission element;

FIG. 3 shows a three-dimensional view of a metering dispenser with a rotatable housing head;

Figure 4 is a schematic diagram of a pump unit with inlet and outlet valves;

5A, 5B are longitudinal sections through a metering dispenser with two pump units in the basic position or in a conveying position;

6A, 6B show an exemplary embodiment of a metering dispenser in the basic and delivery positions, in which the pump units can be actuated by means of axially displaceable cartridges.

1A to 1F, the basic concept of the metering dispenser according to the invention is first described, according to which the mixture is adjusted by rotating or shifting a pivot axis 40 of a transmission element 38 with respect to a plurality of pump units 12a, 12b, which indirectly or directly via the transmission element 38 In principle, the pivot axis 40 can be fastened to the transmission element 38 and can thus be adjusted together with the latter relative to the pump units. The position of the pivot axis 40 relative to the transmission element 38 can also be changed in a kinematic reversal.

According to FIGS. 1A to 1F, a grading device 36, designated overall by reference numeral 36, has for a metering dispenser according to the invention essentially a transmission element 38, which is plate, ring or disk-shaped in the illustrated embodiment. The transmission element 38 can be rotated about a vertical axis H illustrated by dash-dotted lines in FIG. 1A and can also be pivoted about a pivot axis 40 arranged approximately transversely thereto.

The underside of the transmission element 38 bears against pump heads 26 of two pumps 12a and 12b or can be brought into abutment with these pump heads 26, so that by pivoting the transmission element 38 a

Pump stroke can be initiated.

FIGS. 1A, IC and 1E each show the state in which the annular or disk-shaped transmission element 38 is not pivoted about its axis 40 and FIGS. 1B, 1D and IF each show states in which this transmission element 38 follows about its axis 40 is pivoted below.

The pivoting or pushing down of the transmission element 38 about its axis 40 can take place by means of a manually operable nozzle head (not shown), in which the outlet or dispensing nozzle for the mixture can also be arranged. Furthermore, the transmission element 38 can be rotated with this nozzle head, so that the position of the pivot axis 40 relative to the pumps 12a and 12b changes, as can be seen directly from FIGS. 1A to IF. For example, the transmission element 38 can be mounted by means of the pivot axis 40 in a bearing or holder which is connected in a rotationally fixed manner to y, the nozzle head and, with a corresponding rotation of the nozzle head, causes the transmission element 38 to rotate from the outside. 1A shows a neutral position of the transmission element 38, in which it is oriented essentially horizontally and does not exert any force on the pump heads 26 of the pumps 12a and 12b. This neutral position is preferably spring-assisted, ie the transmission element 38 assumes the neutral position without external force, for example spring support, or returns to it after the force has been applied.

If the transmission element 38 is pressed down or deflected, for example by depressing the nozzle head, it carries out a pivoting movement about the pivot axis 40 according to FIG. 1B, so that only the pump head or displacer 26 of the pump 12B on the right in FIG. 1B is depressed becomes. As a result, the pump 12b has a stroke or a delivery volume of 100%. The pump 12a, which is not subjected to a force because it lies below the pivot axis 40, has a stroke or a delivery volume of 0% (based on the total output quantity). The discharge quantity contains only components of the component conveyed by the pump 12b.

If the transmission element 38 is rotated, for example, via the nozzle head or another suitable device by 180 ° relative to the position shown in FIG. 1A, the transmission element 38 in its neutral position assumes the position according to FIG Pump 12b is adjacent or comes to lie above this. If the transmission element 38 is pivoted downward about its pivot axis 40 starting from the position according to FIG. IC, then the left pump 12a now carries out a stroke (delivery volume 100%), while the right pump 12b arranged below the pivot axis does not carry out or introduce a stroke Funding volume of 0%. From- The quantity to be carried contains only components of the component conveyed by the pump 12a.

When the transmission element 38 is rotated from the position according to FIG. 1A or IC by 90 °, an orientation of the pivot axis 40 according to FIG. 1E is obtained, this being parallel to the connecting line of the two pumps 12a, 12b. If, starting from the position according to FIG. 1E, the transmission element 38 is pressed down, the two displacers 26 of the pumps 12a and 12b are pressed down by the same path, so that both pumps have an identical stroke or a delivery volume of 50% of the total output quantity . The mixture contains equal parts of the two components.

With corresponding intermediate positions of the transmission element 38 or its axis 40, there are corresponding intermediate ratios between the strokes or delivery volumes of the pumps 12a and 12b, so that they can be changed continuously for each component between 0%: 100% and 100%: 0%.

In the construction described above, the pivot axis 40 is formed as a bearing pin projecting tangentially from the peripheral edge of the annular or plate-shaped transmission element 38. That is, the change in the relative position of the pivot axis 40 is brought about by jointly rotating the transmission element 38 and the pivot axis 40.

In the embodiment shown in Figure 2, there is a kinematic reversal in that the

Transmission element 38 is rotatably but pivotally received in an indicated housing 42 of a metering dispenser 44. On this roughly cylindrical housing 42, a rotatable housing head 46 is mounted, on the inner circumferential wall of which the pivot axis 40 is attached. That is, the pivot axis 40 passes through the interior encompassed by the housing head 46 at least in sections. The transmission element 38, which is pivotably mounted in the housing 42, is supported with a peripheral portion 48 on the pivot axis 40, so that it can be given away when a force is applied to a region of the transmission element which is spaced apart from the pivot axis 40.

The two pump units 12a, 12b rest with the displacers 26 on the lower end face of the transmission element 38 in FIG.

In the construction concept shown, the transmission element 38 is designed as a disk-shaped hollow body which is connected to the displacers 26. The components are conveyed through the displacers into a transverse channel 43 of the non-rotatable transmission element 38. An axial channel 45 opens into this transverse channel, via which the components are guided to the dispenser nozzle (not shown). The transmission element 38 is thus part of an outlet-side mixing chamber. In the rotational position of the housing head 46 shown in FIG. 2A, there is an imaginary connecting line between the two displacement axes at a parallel distance X from the pivot axis 40. That is, in this relative position, when the transmission element 38 is pivoted, both displacers 26 are moved by the same stroke, so that the over the dispenser nozzle discharged in equal parts consists of both components.

The housing head is shown in FIG. 2B

46 rotated relative to the housing 42, so that the pivot axis 40 obliquely to the imaginary connecting line of the

Pump units 12a, 12b (in the basic position according to FIG 2A) is employed. That is, by changing the position of the pivot axis 40, the point of contact of the non-rotatably mounted transmission element 38 changes, so that it performs a kind of "wobble movement" when the housing head 46 is rotated. This wobble movement reduces the point of application of the transmission element 38 on the right pump unit 12b compared to the dimension X, while the point of application of the transmission element 38 on the pump unit 12a shown on the left is increased compared to this dimension X. Accordingly, the displacer 26 of the pump unit 12a carries out a larger stroke than the displacer 26 of the pump unit 12b when the transmission element 38 is pivoted, so that the discharge amount has a greater proportion of the component conveyed by the pump unit 12a. The proportion of the component conveyed by the pump unit 12b approaches 0 when the pivot axis roughly intersects the axis of the pump unit 12b. The proportion of the component conveyed by the pump unit 12b can be increased by rotating the pivot axis 40 towards the pump unit 12a.

In accordance with the above statements, the principle according to the invention is based on changing the relative position of a pivot axis 40 with respect to a plurality of pump units 12 and actuating all pump units via a common transmission element 38. It does not matter for the principle according to the invention whether the swivel axis is moved or rotated together with the transmission element or with reference to the transmission element.

FIG. 3 shows a greatly simplified view of a metering dispenser 44 according to the invention with a housing 42, in which receiving compartments for the components, which are described in more detail below, are accommodated. The housing

42 carries the rotatable housing head 46, on which a dispenser derdüse 52 is formed. The mixture set via the stroke of the pump units 12 exits through this. The mixture is adjusted by rotating the housing head 46 with respect to the housing 42, a mark 56 being applied to the housing head 46, for example, which is overlapped with a scale 58 in order to set a predetermined metering ratio. In the exemplary embodiment shown in FIG. 3, the inventive concept indicated with reference to FIGS. 1A to IF is to be realized, ie the transmission element 38 is rotated together with the pivot axis 38 indicated by dash-dotted lines above the housing head 46. In the exemplary embodiment shown, an opening 60 is formed in the region of the peripheral edge of the end face 54, so that a confirmation section 62 of the transmission element 38 is cut free. This actuating section 62 is at a distance from the pivot axis 38, so that the transmission element 38 can be pivoted by applying an actuating force F to the actuating section 62 and thus a delivery stroke of the pump units 12 can be brought about. Of course, the cut-out housing head 46 can also be used in the embodiment shown in FIGS. 2A, 2B with a rotationally fixed transmission element.

Alternatively, the housing head 46 could also be guided axially displaceably on the housing 42, an actuating bolt being formed, for example, on the inner surface of the housing head 46, which can be brought into contact with the actuating section 62 of the transmission element 38 by axially displacing the housing head 46 that pivoting also takes place about the pivot axis 38.

FIG. 4 shows a schematic sectional illustration through one of the pump units 12. Unit 12 designed as a piston pump. As already mentioned at the beginning, this pump unit can, however, also be designed according to other active principles, for example as a bellows pump, diaphragm pump or the like.

According to FIG. 4, the displacer or piston 26 is guided axially displaceably in a cylinder 66, so that a displacer space 68 is delimited by the piston and the cylinder 66. In the known solutions mentioned at the outset, the component was required through the piston 26, which was connected in the outlet area to a suitable outlet valve. The outlet of this outlet valve was connected to a mixing chamber by a hose. A disadvantage of this variant is that the assembly of this hose and the construction of the piston 26 are comparatively complicated, so that a considerable outlay in terms of production technology is required. Furthermore, considerable pressure losses can occur with this known solution, which make it difficult to convey highly viscous components.

The formation of the outlet channel formed by a hose was necessary due to the pivoting of the pump units. Since the pump unit 12 is accommodated in a fixed manner in the housing in the concept according to the invention, the use of such hoses can be dispensed with, so that the construction is considerably simpler.

According to the invention, an inlet channel 70, in which an inlet valve 72 is arranged, opens into the displacement chamber 68, in which an inlet valve 72 is arranged, so that during a suction stroke of the piston 26 a component can be sucked into the displacement chamber 68 in the direction of the arrow from a ^* receiving compartment. When the displacement space 68 (delivery stroke) is reduced, the suction valve 72 formed as a non-return valve is closed and the component under pressure is pressurized a pressure channel 74 is discharged from the displacement chamber 68. This pressure channel 74 opens into a metering or mixing chamber, which is described in more detail below, and in which the individual components are brought together. The components can be mixed here; however, they can also pass through the metering / mixing chamber unmixed. A backflow of the pressurized component is prevented by a pressure valve 76, which is also designed as a check valve.

In the exemplary embodiment shown in FIG. 4, the two valves 72, 76 are designed as ball valves, of course other valve constructions, for example plate valves etc., can also be used. In this embodiment, all channels for guiding the component are formed by solid housing walls, so that the assembly and manufacture is simplified compared to the solution mentioned at the beginning.

The piston 26 is actuated by pivoting the transmission element 38 indicated by the dot-dash line. The piston 26 is biased into its contact position against the transmission element 38 by a compression spring 78.

FIG. 5 shows a section through a housing head 46 according to FIG. 3, in which two pump units 12a, 12b according to FIG. 4 are accommodated.

FIG. 5A shows the metering dispenser in its basic position, while in FIG. 5B the pump units 12a, 12b are shown in their conveying position.

The housing head 46 has a peripheral wall 80 and a bottom 82 on which two connecting flanges 84 are formed. The receiving compartments, for example Cartridges, glasses, bags for the components of the mixture can be attached. The end of the housing head 46 is formed by the end face 54. The cylinders 66 of the two pump units 12a, 12b are fastened in the housing head 46 in such a way that the displacement chamber 68 is formed between the base 82 and the cylinders 66 and the pistons 26. Each displacement chamber 68 is connected via an opening 86 to the suction channel 70 encompassed by the connecting flange 84.

The openings 86 each form a valve seat for the inlet valve 72, the valve spring of which is supported on an annular shoulder 88 of the cylinder 66.

The pressure channel 74 extends approximately in the direction of the axis of the housing head 46, a further opening 90 being formed in a wall, via which the pressure channel 74 is connected to a mixing chamber 92. The opening 90 in turn forms a seat for the valve body of the outlet valve 76, the valve spring of which is supported on a shoulder of the mixing chamber 92. As can be seen from the illustration according to FIGS. 5A, 5B, the valves 72, 76 are arranged in the area between the two pump units 12a, 12b, so that the metering dispenser 44 can be designed with a substantially shorter axial length than that of the solutions mentioned at the beginning The case was in which the valve devices were formed in the axial direction before or after the pump units 12a.

The pressure channels 74 of both pump units 12a, 12b open into the common metering or mixing chamber 92, in which a static mixer 94 can also be arranged to improve a mixture. The individual spaces of the housing head 46 are delimited by components which are preferably produced using injection molding technology and which are connected to one another by suitable snap-in or screw connections. The geometrical configuration of these individual components of the housing head is of secondary importance for understanding the invention, so that further explanations with reference to the drawing are unnecessary.

The mixed components are fed via a central metering channel 96 to the dispenser nozzle 52, which emerges radially from the housing head 46.

The pistons 26 of the pump units 12a, 12b are actuated via the transmission element 38, which is ring-shaped in this exemplary embodiment and can be pivoted about the pivot axis 40 indicated by dots. In this exemplary embodiment, the pivot axis 40 is formed in one piece with the transmission element 38 and is mounted in the housing head 46 in a manner not shown in detail. The annular transmission element 38 has an inner recess 98, which is penetrated by the mixing channel 96 leading to the dispenser nozzle 52.

The actuation section 62 of the transmission element 38 indicated in FIG. 3 extends out of the recess 60 of the housing head 46. By applying the actuating force F, the transmission element 38 can be pivoted about the pivot axis 40 and brought into the position shown in FIG. 5B, so that the two pump units 12a, 12b are actuated as a function of the relative position of the pivot axis. The; Components from the displacement chamber 68 are conveyed to the dispenser nozzle 52 via the pressure channel 74, the outlet valves 76 lifted from the associated valve seats 90, the mixing chamber 92 and the metering channel 96. When relieving the Carrying element 38, the pump units are moved back into their basic position shown in FIG. 5A by the force of the compression springs 78, so that the components are sucked into the respective displacement spaces 68 of the pump units 12a, 12b via the suction channel 70 and the suction valves 72 lifted from the openings 86.

In the exemplary embodiment shown in FIGS. 5A, 5B, the transmission element 38 is provided with a peripheral surface 100, so that the recess 60 is covered toward the interior. When the transmission element 38 is pivoted, this peripheral surface 100 is immersed in a space between the cylinder 66 and the peripheral wall 80.

In all of the above-described exemplary embodiments, the displacers 26 of the pump units 12a, 12b were actuated indirectly or directly via the transmission element 38.

In other words, the kinematic reversal can consist, for example, in that the transmission element acts on the receiving compartments which are movably guided in the housing and these in turn act on the pump units. The displacers can be fixed in the housing, while the cylinder diameters can be moved with the receiving compartments. Conversely, the displacers can also be connected to the receiving compartments and the cylinders can be fixed in the housing.

In the exemplary embodiment described at the outset, the cylinders could also be shifted relative to fixed displacers via the transmission element. An exemplary embodiment based on a kinematic reversal is shown schematically in FIGS. 6A, 6B.

Accordingly, two pump units 12a, 12b are again accommodated in the housing 42 of the metering dispenser 44 and are designed in a piston construction. The pistons 26 are fixed in the housing 42 and are designed as so-called hollow pistons, the outlet or pressure valves being formed in a pressure channel 74 connected to the piston 26. The individual pressure channels 74 of the pump units 12a, 12b can open into a common mixing channel 96. The cylinders 66 of the pump units are arranged axially displaceably in the housing 42 and are each fastened to a cartridge 102 in which the components are accommodated. The suction valve 72 is formed in the transition region between the cartridge 102 and the cylinder 66, so that backflow of the component from the displacement chamber 68 into the cartridge 102 is prevented. In the exemplary embodiments shown, each cartridge 102 is provided with a sealing piston 104 which moves to the left toward the inlet valve 72 as the cartridge 102 becomes increasingly empty. The cartridges 102 and the cylinders 66 are guided axially displaceably in the housing 42.

The transmission element 38 is mounted in the bottom area of the housing 42 remote from the pump units 12a, 12b and in turn can be pivoted about an adjustable pivot axis 40. In contrast to the aforementioned exemplary embodiments, the transmission element 38 does not act on the displacers 26 but on the cartridges 102, so that they are displaced in the axial direction when the transmission element 38 is pivoted. As a result of this axial displacement of the cartridges 102, the associated cylinders 66 are also counteracted. moved over the displacers 26 so that the displacer space 68 is reduced (delivery stroke) or enlarged (suction stroke). In the exemplary embodiment shown, the pivoting movement of the transmission element 38 is transmitted via contact pins 106 which are formed on the bottoms of the cartridges 102.

The pivoting of the transmission element 38 takes place via a handle, not shown, which extends through the bottom 108 of the housing 42. In this exemplary embodiment, the cartridges 102 must be made sufficiently rigid to convert the pivoting of the transmission element 38 into an axial displacement of the cylinders 66.

In order to increase the operational safety of the metering dispenser 44, blocking elements can be assigned to the pump units 12a, 12b or the transmission element 38, which prevent actuation when the metering dispenser 44 is excessively inclined. Such locking elements can be designed, for example, as pawls operated by gravity, similar to a seat belt. This variant is particularly advantageous when pumping low-viscosity components (liquids), in which the receiving compartments are formed by bottles with suction hoses. The actuation of the pump units 12a, 12b is only released if liquid can be sucked in via the suction hose of the bottle.

In the above-described exemplary embodiments, the components were fed to a common, central mixing chamber, 92. In principle, however, the individual components could also be guided separately from one another to the dispenser nozzle, so that no internal mixing takes place. The dispensing nozzle 52 can be in the radial direction or emerge tral from the end face 54 of the housing head 46.

In order to reduce the actuation forces when mixing highly viscous components, suitable handles can be attached to the transmission element, through which a greater leverage effect can be set.

What is disclosed is a metering dispenser for metering at least two components, each of which is conveyed from an assigned receiving compartment via a pump unit. The mixing ratio is set via a transmission element, the point of application of which is adjustable with respect to the two pumping units.

Claims

claims

1. Dosing dispenser for dosing at least two components accommodated in a respective receiving compartment (102) with a pump device (12a, 12b) connected to each of the receiving compartments (102), and an adjusting device that is operatively connected to the pump devices (12a, 12b) Setting the quantity ratio of the components and a dispenser nozzle (52) for discharging the components, characterized in that the adjusting device has a pivotable transmission element (38) which bears directly or indirectly on the pump devices (12a, 12b) for their actuation and whose pivot axis (40) is adjustable with reference to the pump devices (12a, 12b), so that the delivery volume of the pump devices can be set as a function of the relative position of the pivot axis (40).

2. Dispenser according to claim 1, wherein the pivot axis (40) is formed on the transmission element (38) and is rotatably mounted in a housing (42).

3. Dispenser according to claim 1, wherein the relative position of the pivot axis (40) to the transmission element (38) is variable.

4. Dosing dispenser according to one of the preceding claims, wherein the transmission element is plate, disc or ring-shaped.

5. Dosing dispenser according to claim 2, wherein the pivot axis (40) as diametrically from the transmission element standing bearing pin is formed, the end portions of which are mounted in the housing (42).

6. Dosing dispenser according to claim 3, wherein the pivot axis (40) is formed on the housing and acts as a support for the non-rotatably mounted with respect to the housing (42) transmission element (38).

7. Dispenser according to claim 6, wherein the pivot axis (40) is formed on the inner peripheral wall of a rotatable housing head (46).

8. Dosing dispenser according to one of the preceding claims, wherein a recess (60) is formed on the peripheral wall of the housing head (46) through which an actuating section (62) of the transmission element (38) is accessible for pivoting.

9. Dosing dispenser according to claim 8, wherein the dispenser nozzle (52) is arranged diametrically to the actuating section (62).

10. Dispenser according to claim 8 or 9, wherein a handle is attached to the actuating section (62).

11. Dosing dispenser according to one of the preceding claims, each having a suction channel (70) assigned to a pump device, which is connected via an inlet valve (72) to a displacement chamber (68-) of the pump unit (12a, 12b), and with at least one outlet side chamber (74, 92), which is connected to the displacement chamber (68) via an outlet valve (76) and to which the dispensing nozzle (52) is connected, the chambers preferably being arranged in the region between the pump units (12a, 12b) .

12. Dosing dispenser according to claim 10, wherein a common dosing or mixing chamber (43, 92) is connected via an outlet valve (76) to the pumping devices (12a, 12b).

13. A dispenser according to claim 12, wherein the mixing chamber (43, 92) is formed in the transmission element (38), which in turn is connected to the displacers (26) of the pump unit (12a, 12b).

14. Dosing dispenser according to one of the preceding claims, wherein the pump unit (12a, 12b) is designed as a piston, diaphragm or bellows pump.

15. Dosing dispenser according to one of the preceding claims, wherein the receiving compartments are designed as cartridges (102) with an integrated piston, as a bag or as a bottle with a suction hose.

16. Dosing dispenser according to one of the preceding claims, wherein the receiving compartments (102) slidably received in the housing (42) and with the displacers (26) receiving cylinders (66) or displacers (26) are connected, the transmission element (38) for Effecting a stroke acts on the receiving compartments (102).