EP2952452A1 - Device for dispensing a mixture - Google Patents

Abstract

The invention relates to a device for dispensing a mixture (1) which can be prepared by mixing at least two substances (2, 3) in the device, with f) a housing (8), g) in each case one in the housing (8) received reservoir (4, 5) for receiving one of the at least two substances to be mixed (2, 3), h) a mixing chamber (6) in which the at least two substances (2, 3) are mixable to the mixture (1), i) a delivery device (7) for the mixture (1) arranged on the mixing chamber (6), j) wherein the substances (2, 3) accommodated in the reservoirs (4, 5) can be transferred into the mixing chamber (6) and out of the discharge opening (9) by means of an emptying device (17) associated with an actuating device (9), wherein the actuating device (9) when transferred from a starting position into an end position actuates a mixing element (10) arranged in the mixing chamber (6) through which the substances in the mixing chamber (6) can be mixed.

Description

The invention relates to a device for dispensing a mixture according to the preamble of patent claim 1.

Such a device is for example from the DE 10 2007 029 584 A1 known. For repairing damage to a surface layer of objects, for example for repairing paint damage, mixtures are known which consist of two substances, one of which is a surface coating material based on plastic, for example a paint and the other substance causes the curing or curing of the material , So that the mixture does not harden before it is used, the two substances are mixed together just prior to use. The from the DE 10 2007 029 584 A1 Known device is pin-shaped and is therefore also referred to as a multi-component pin. This multi-component pin is particularly suitable for applying a mixture consisting of two substances, which is used for targeted repair of coatings or paint damage to vehicles. In the non-activated state, the substances to be mixed are accommodated in separate reservoirs separated from one another by wall sections in the housing of the device. To activate the device, the wall sections between the reservoirs are pierced by means of a piercing spike, so that then mixing of the substances is possible. However, it must be ensured in the known device by manually shaking the device that the two substances be properly mixed, so that the resulting mixture can also unfold its intended effect. Furthermore, such shaking also does not ensure that the two components mix with one another in the intended manner, so that even after shaking it is not ensured that the two substances have mixed to the mixture required for the desired use.

It is therefore an object of the invention to provide a device for dispensing a mixture according to the preamble of claim 1 such that a secure and defined mixing of the substances is achieved to the mixture, so that the mixture is also present according to the desired use before its application.

This object is achieved by a device for the application of a pharmaceutical with all features of claim 1. Advantageous embodiments of the invention can be found in the subclaims.

1. a) ein Gehäuse,
2. b) jeweils ein in dem Gehäuse aufgenommenes Reservoir zur Aufnahme einer der zu mischenden wenigstens zwei Substanzen,
3. c) eine Mischkammer, in welcher die wenigstens zwei Substanzen zu dem Gemisch vermischbar sind,
4. d) eine an der Mischkammer angeordnete Abgabeeinrichtung für das Gemisch (1),
5. e) wobei die in den Reservoirs aufgenommenen Substanzen mittels einer einer Betätigungseinrichtung zugeordneten Entleerungseinrichtung in die Mischkammer (6) überführbar und aus der Abgabeöffnung abgebbar sind.

The device according to the invention for dispensing a mixture, which can be prepared by mixing at least two substances in the device, has the following:

1. a) a housing,
2. b) in each case a reservoir accommodated in the housing for receiving one of the at least two substances to be mixed,
3. c) a mixing chamber in which the at least two substances are mixable to the mixture,
4. d) a mixing device arranged on the discharge means for the mixture (1),
5. e) wherein the substances received in the reservoirs can be transferred by means of an emptying device associated with an actuating device into the mixing chamber (6) and can be dispensed from the dispensing opening.

According to the invention, it is now provided that, when transferring from an initial position into an end position, the actuating device actuates a mixing element arranged in the mixing chamber through which the substances can be mixed in the mixing chamber. The inventive design of the device, it is now possible that the at least two substances are already mixed by the mixing element in transferring the at least two substances in the mixing chamber in this in a defined manner, so that can be dispensed with a separate mixing process after the at least two Substances were transferred to the mixing chamber. Advantageously, it is also ensured by the mixing element that the at least two substances are mixed in a defined manner by the mixing element. This ensures that the mixture is also present in the one required for the respective application, because the mixing of the at least two substances by means of the mixing element is carried out in the manner necessary for the particular type.

It should be noted here that the device not only to that in the DE 10 2007 029 584 A1 described application for producing a curable varnish in the automotive sector can be used. Rather, the device according to the invention can also be used in many other fields of application, in which at least two substances must be mixed together in order to be able to be applied as a mixture in the desired manner. For example, here only the use in the medical and / or therapeutic field is mentioned, in which two substances must be mixed together in order to achieve the desired effect as a mixture.

According to a first advantageous embodiment of the invention, it is provided that a transmission element is provided for actuating the mixing element between this and the actuating device. By means of such a transmission element, it is possible in a simple manner to transmit a movement of the actuating device to the mixing element, so that the mixing of the at least two substances can take place by means of the mixing element in the mixing chamber to the mixture. In this case, the transmission element can also be designed such that at least part of the transmission element is also part of the actuating device.

In another advantageous embodiment of the invention, it is provided that the transmission element is formed of a first, the actuator associated transmission part and a second, the mixing element associated transmission part, wherein the first transmission part relative to the second transmission part is relatively movable and wherein the method of two transmission parts against each other operated in the mixing chamber arranged mixing element, in particular is set in rotation. In particular, it has been proven that the mixing element associated with the transmission part as drive screw and the actuator associated transmission part as the drive screw in rotation, on its sliding sliding element is formed. This makes it possible to transmit a translatory movement of the movement device into a rotational movement of the drive worm and thus of the mixing element. By thus defined rotation of the mixing element in the mixing chamber, the desired mixing of the at least two substances in the mixing chamber is ensured to the mixture.

Furthermore, it can be provided according to the invention that the actuating device has a first actuating element for actuating the mixing element and a second actuating element for actuating the emptying device. This makes it possible to decouple the emptying of the at least two reservoirs with their respective substances from the mixing. The emptying of the reservoirs can take place with the second actuating element, while the mixing of the substances in the mixing chamber to the mixture can be effected thereafter by means of the first actuating element, which actuates the mixing element or rotated in the mixing chamber.

However, it is provided according to a particularly advantageous concept of the invention that the first actuating element and the second actuating element are designed to be movable from a starting position in a synchronized manner until the emptying device has assumed an intermediate position in which it remains, even if the first actuating element continues to move in relation to the second Actuator is moved to an end position. This makes it possible that, by actuating the first actuating element, the second actuating element is also actuated until the at least two substances have been transferred by means of the emptying device from their reservoirs into the mixing chamber. During this transfer, the mixing element is already actuated by the first actuation element and in the process mixes the substances into the mixture already in the mixing chamber. After the emptying device has assumed this intermediate position, the first and second actuating element are no longer synchronized, so that they can now be actuated separately. Namely, if the present in the mixing chamber mixture is not applied directly by a further actuation of the second actuating element and thus the emptying device for the intended application, the mixture can by means of the first actuating element and thus the mixing element are later mixed again before the actual application. This ensures that the mixture is present in accordance with the mixing present for the required use. This is particularly important when the least two substances of the mixture in the mixing chamber in the meantime have at least partially segregated again, as may be the case for example with emulsions.

In order to provide the device according to the invention in a particularly handy manner, the reservoirs are arranged in a hollow cylinder, wherein the ends of the hollow cylinder are closed by one wall and the reservoirs are separated from each other by means of a further wall. This makes it possible to produce the at least reservoirs for the substances to be mixed in a component, namely a hollow cylinder. This avoids that for mixing or for application, the reservoirs do not have to be separately positioned against each other.

In order to achieve a particularly simple operation of the device according to the invention, it is further provided that the emptying device is designed as a piston which is movable within the hollow cylinder. As a result of this special embodiment, the device according to the invention can be substantially pin-shaped, the dispensing device, the mixing chamber and the hollow cylinder with its reservoirs being arranged behind one another in the housing, so that the piston can be moved through the hollow cylinder and the mixing chamber. In this way, it is possible by means of the piston to transfer the substances from their reservoirs into the mixing chamber and, secondly, to transfer the mixture from the mixing chamber into the dispensing device.

It has also proven to be advantageous to assign the piston a wall opening device, preferably in the form of a mandrel, with which the preferably formed as sealing films, the reservoirs separating and the hollow cylinder final walls during the process of the piston can be opened within the hollow cylinder. As a result, the walls formed as sealing films are automatically opened during the process of the piston, without the need for a separate process step is necessary.

According to another embodiment of the invention, the first actuating element is associated with a spring element, which is tensioned upon actuation of the first actuating element becomes. This makes it possible that the first actuator after actuation automatically returned to its original position due to the spring force of the tensioned spring element, the mixing element is also operated against. In this respect, it is possible by moving the first actuating element back and forth to use a longer mixing process, wherein the user of the device, however, only has to perform the outward movement, since the movement takes place automatically by spring force.

In order for a particularly effective synchronization of the first and the second actuating element is achieved, which is also canceled when the emptying has its or the piston has reached its intermediate position, the second actuating element is associated with a synchronization element which synchronizes the actuators when operating the actuator and at Reaching the intermediate position by the emptying device suspends the synchronization. This synchronization element can be designed to be spring-loaded. As a result, the Synchronisationselemet spring force is transferred to a rest position when the emptying device or the piston occupies the intermediate position. The movements of the first and second actuator are thereby decoupled, so that their synchronous movement is canceled.

According to a further advantageous embodiment of the invention, the mixing element by the emptying device or the piston is translationally movable from the mixing chamber. In particular, the mixing element is translationally movable out of the mixing chamber by the emptying device or the piston if, by actuating the second actuating element, the emptying device or the piston is transferred from the intermediate position to its end position and the mixing chamber is emptied.

Other objects, advantages and features of the present invention will become apparent from the following description of embodiments with reference to the drawings. All described and / or illustrated features alone or in any meaningful combination form the subject matter of the present invention, also independent of their summary in the claims or their dependency.

Figur 1:

ein erstes Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung in einer perspektivischen Ansicht,

Figur 2:

das Ausführungsbeispiel der Figur 1 in einer Querschnittdarstellung,

Figur 3:

ein zweites Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung in einer perspektivischen Ansicht,

Figur 4:

das Ausführungsbeispiel der Figur 2 in einer Explosionsdarstellung,

Figur 5:

das Ausführungsbeispiel der Figur 2 in einer Querschnittdarstellung,

Figur 6:

eine Querschnittdarstellung eines Ausführungsbeispiels im Detail in einer ersten Position,

Figur 7:

eine Querschnittdarstellung eines Ausführungsbeispiels im Detail in einer zweiten Position und

Figur 8:

eine Querschnittdarstellung des Ausführungsbeispiels der Figur 2 in einer dritten Position.

Show it:

FIG. 1:

A first embodiment of a device according to the invention in a perspective view,

FIG. 2:

the embodiment of FIG. 1 in a cross-sectional view,

FIG. 3:

A second embodiment of a device according to the invention in a perspective view,

FIG. 4:

the embodiment of FIG. 2 in an exploded view,

FIG. 5:

the embodiment of FIG. 2 in a cross-sectional view,

FIG. 6:

a cross-sectional view of an embodiment in detail in a first position,

FIG. 7:

a cross-sectional view of an embodiment in detail in a second position and

FIG. 8:

a cross-sectional view of the embodiment of the FIG. 2 in a third position.

In FIG. 1 a first embodiment of a device according to the invention is shown in a perspective view. In this illustration, a housing 8 of the device is shown, at one end of a dispenser 7 for the mixture 1, which is produced from the substances to be mixed 2, 3, is arranged. On the housing 8, a first actuating element 11 of an actuating device 9 is further arranged to be displaceable. At the other end of the housing 8, a second actuating element 12 of the actuating device 9 is further arranged, which is designed to be displaceable into the housing 8 in this embodiment.

FIG. 2 now shows the embodiment of FIG. 1 in a cross-sectional view, so that the parts that are located inside the housing 8 are recognizable. Further is to explain the operation of the device according to the invention on the basis of this cross-sectional view. At one end of the housing 8, the dispensing device 7 can also be seen here, which has a channel 26, via which a mixture 1 mixed in a mixing chamber 6 of substances 2, 3 can be applied. The dispenser 7 is now turned up onto a transmission part 16 of a transmission device 14, wherein the transmission part 16 is formed as a drive worm, which cooperates by a further on its sliding transmission part 15 of the transmission device 14. In this case, the transmission component 15 is displaceably arranged via the first actuating element 11 of the actuating device 9 on the drive worm, which is referred to below as the second transmission part 16. At the end of the second transfer part 16 facing the delivery device 7, a mixing element 10 is arranged, which protrudes into a mixing chamber 6 of a component 28. The component 28 is presently received in its entirety in the second transmission part 16. Within the component 28, a hollow cylinder 18 is present, which is subdivided by a film 21 formed as a wall into two reservoirs 4 and 5, wherein in the first reservoir 4, a first substance 2 and in the second reservoir 5, a second substance 3 is arranged , The ends of the hollow cylinder are also closed by a trained as a wall 19 and 20 film. At the dispenser 7 opposite end of the housing 8, a second actuator 12 of the actuator 9 is arranged. By means of this second actuating element 12, an emptying device 17 designed as a piston 22 can be displaced through the hollow cylinder 18 and thus through the reservoirs 4 and 5. The piston 22 is associated with a mandrel 23, which is moved along with the piston 22.

Between the first actuating element 11 and the second actuating element 12 of the actuating device 9, a synchronization element 25 is also arranged, which is biased and ensures that in a first procedural section, the two actuating elements 11 and 12 are moved synchronously with each other. However, this synchronization is canceled when the piston 22 has assumed an intermediate position in which the mandrel 23 opens all the films 19, 20 and 21 formed as foils and the substances 2 and 3 through the piston 22 from their reservoirs 4 and 5 in the Mixing chamber 10 were transferred.

The first actuating element 11 of the actuating device 9 actuates the first transmission part 15 of the transmission device 14 through openings 29.

The operation of this first embodiment is now the following:

Starting position is the in FIG. 2 presented, as well as in FIG. 6 is shown in detail. Now, the first actuator 11 of the actuator 9 is moved in the direction of the dispenser 7 on the housing 8 by the user. As a result, the second actuating element 12 of the actuating device 9 is also moved via the synchronization element 25, as a result of which the piston 22 and the mandrel 23 likewise move in the direction of the dispensing device 7 within the hollow cylinder 18. The mandrel 23 now opens as the first wall 20 at the second actuator 12 facing the end of the hollow cylinder 18, so that the piston penetrates into the hollow cylinder 18 and thus into the first substance 2 having reservoir 4.

If the movement of the actuating device 9 continues in the direction of the dispensing device 7, the mandrel 23 now also opens the wall 21 separating the two reservoirs 4 and 5, and the piston 22 drives the substance 2 of the reservoir 4 further into the reservoir 5, in which the Substance 3 is stored. In a further continuation of the movement of the actuating device 9 in the direction of the dispensing device 7, the hollow cylinder 18 in the direction of the mixing chamber 10 occlusive wall 19 is now opened and the two substances 2 and 3 are driven by the piston 22 into the mixing chamber 10. Once the reservoirs 4 and 5 are completely emptied and the two substances 2 and 3 have been driven into the mixing chamber 10, the piston 22 and the mandrel 23 assume an intermediate position. Upon reaching this intermediate position, the biased synchronization element 25 relaxes and assumes a rest position, so that the movement of the two actuators 11 and 12 of the actuator 9 are no longer synchronized with each other. FIG. 7 shows this intermediate position in detail.

During this movement of the actuating device 9 described so far, the first transmission element 15 coupled to the first actuating element slides on the second transmission part 16 designed as a drive worm and causes it and thus also the mixing element 10 projecting into the mixing chamber 6 to rotate, so that in this movement two substances 2 and 3 already in the mixing chamber 6 to the mixture 1 are mixed. In order to achieve a further or later re-mixing of the two substances 2 and 3 in the mixing chamber 6, the second transmission part 16 and thus the mixing element can be rotated by a reciprocating method of the first actuating element 11 on the housing 8 in rotation. With such a reciprocating movement, only the first actuating element 11 of the actuating device 9 is moved, since due to the synchronization element 25 in the rest position, the second actuating element 12 is no longer moved.

If, finally, the mixture 1 present in the mixing chamber 6 is to be applied, the second actuating element 12 is now actuated further in the direction of the dispensing device 7, whereby the piston 22 mixes the mixture 1 from an opening in the mixing chamber 6 into a channel 26 of the dispensing device 7 drives from where it can then be applied according to its use. This position of the individual elements of the device is in the detailed representation of FIG. 8 shown.

The opening of the mixing chamber 6 with respect to the channel 26 may be closed by a film, not shown here, a valve or the like. Furthermore, during the entire actuation of the actuating device 9, the component 28 having the mixing chamber 6 remains sealed against the transmission part 14 designed as a drive worm and the mixing element arranged thereon.

In the FIGS. 3 to 5 is a second embodiment of the invention dargstellt that in its operation of the in the FIGS. 1 and 2 represented embodiment corresponds and therefore for the detailed representations of FIGS. 6 to 8 hold true.

In this second embodiment, however, are both actuators 11 and 12, the actuator 9 at the opposite end of the dispenser 7 of the housing 8. Again, by a synchronous movement of the two actuating element 11 and 12 of the actuator 9 is a method of the piston 22 in the Hollow cylinder 18 and the reservoirs 4 and 5 reaches, wherein the substances contained therein 2 and 3 are driven into the mixing chamber 6 and thereby mixed by the rotating mixing chamber 6 in the mixing element 10 to the mixture 1. The actuators 11 and 12 are also moved synchronously until the piston, the intermediate position corresponding to the in FIG. 7 has reached. In this intermediate position remains the piston 22 now, even if the actuator 9 is moved away with its two actuators 11 and 12 by the arranged in the device spring element 24 again from the dispenser 7 of the housing 8, wherein the two transmission parts 15 and 16 of the transmission device 14 again cooperate and a Rotate the mixing element 10 in the mixing chamber 6 effect.

To apply the mixture 1 now contained in the mixing chamber 6, the actuating device 9 together with its two actuating elements is now moved completely into the housing 8, the piston 22 being moved out of the position according to FIG FIG. 7 is moved into the position shown in Figure 8 and thereby drives the mixture 1 from the mixing chamber 6 in the channel 26 of the dispenser 7.

Also in the embodiment of FIGS. 3 to 5 the reservoirs 4 and 5 are arranged in a hollow cylinder 18 for the two substances 2 and 3 to be mixed. As in the embodiment of FIGS. 1 and 2 In this case, the ends of the hollow cylinder 18 are sealed with walls 19 and 20 formed as films and the reservoirs 4 and 5 within the hollow cylinder separated by a wall 21 formed as a foil. According to the first embodiment, the piston 22, a mandrel 23 is assigned here, by means of which the walls 19, 20 and 21 can be opened during the process of the piston 22.

Again, the opening of the mixing chamber 6 relative to the channel 26 may be closed by a film, not shown here, a valve or the like. Furthermore, during the entire actuation of the actuating device 9, the component 28 having the mixing chamber 6 remains sealed against the transmission part 14 designed as a drive worm and the mixing element arranged thereon.

LIST OF REFERENCE NUMBERS

1

mixture

2

substance

3

substance

4

reservoir

5

reservoir

6

mixing chamber

7

delivery device

8th

casing

9

actuator

10

mixing element

11

actuator

12

actuator

14

transmission element

15

transmission part

16

transmission part

17

emptying device

18

hollow cylinder

19

wall

20

wall

21

wall

22

piston

23

mandrel

24

spring element

25

synchronization element

26

channel

27

cavity

28

component

29

opening

Claims (11)

Device for dispensing a mixture (1) which can be prepared by mixing at least two substances (2, 3) in the device, with a) a housing (8), b) in each case one reservoir (4, 5) accommodated in the housing (8) for receiving one of the at least two substances (2, 3) to be mixed, c) a mixing chamber (6) in which the at least two substances (2, 3) are mixable to the mixture (1), d) one of the mixing chamber (6) arranged discharge means (7) for the mixture (1), e) wherein the substances (2, 3) accommodated in the reservoirs (4, 5) can be transferred into the mixing chamber (6) and out of the discharge opening (9) by means of an emptying device (17) associated with an actuating device (9), characterized in that
the actuating device (9), when transferred from a starting position into an end position, actuates a mixing element (10) arranged in the mixing chamber (6) through which the substances in the mixing chamber (6) can be mixed. Device according to claim 1,
characterized in that
for actuating the mixing element (10) between this and the actuating device, a transmission element (14) is provided. Device according to claim 2,
characterized in that
the transmission element (14) is formed from a first transmission part (15) associated with the actuating device (9) and a second transmission part (16) associated with the mixing element (9), the first transmission part (15) being opposite the second transmission part (16) is formed relatively movable and wherein in the process of the two transmission parts (15, 16) against each other in the Mixing chamber (6) arranged mixing element (10) actuated, in particular is set in rotation. Device according to one of the preceding claims,
characterized in that s
the actuating device (9) has a first actuating element (11) for actuating the mixing element (10) and a second actuating element (12) for actuating the emptying device (17). Device according to claim 4,
characterized in that s
the first actuating element (11) and the second actuating element (12) are designed to be movable from a starting position until the emptying device (17) has assumed an intermediate position in which it remains, even if the first actuating element (11) is further opposite the second actuating element is moved to an end position. Device according to one of the preceding claims,
characterized in that s
the reservoirs (4, 5) are arranged in a hollow cylinder (18), the ends of the hollow cylinder (18) being closed by one wall (19, 20) and the reservoirs (4, 5) being separated from one another by means of a further wall (21) are separated. Device according to claim 6,
characterized in that s
the emptying device (17) is designed as a piston (22) which can be moved within the hollow cylinder (18). Device according to claim 7,
characterized in that s
the piston (22) is associated with a wall opening device, preferably in the form of a mandrel (23), with which the preferably formed as a sealing foil walls (19, 20, 21) during the process of the piston (22) can be opened within the hollow cylinder. Device according to one of claims 5 to 8,
characterized in that s
the first actuating element (11) is associated with a spring element (24), which is tensioned upon actuation of the first actuating element (11). Device according to one of claims 5 to 9,
characterized in that
the second actuating element (12) associated with a synchronization element (25) which synchronizes the actuation elements (11, 12) upon actuation of the actuating device (9) and cancels the synchronization upon reaching the intermediate position by the emptying device. Device according to one of the preceding claims,
characterized in that s
the mixing element (10) is translationally movable out of the mixing chamber (6) by the emptying device (17).

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