Valve configuration parts kit and pneumatic adjustment device having a parts kit of this type

A valve configuration parts kit for providing at least two valve configurations, including: a first plate-shaped main body, a plurality of wall-type webs attached to the plate-shaped main body which, conjointly with the plate-shaped main body, at least in part define fluid paths, and a second main body attached to the first main body, or a third main body attached to the first main body. The second main body contacts a first sub-quantity of the plurality of webs such that the first main body, the second main body, and the first sub-quantity define a first fluid path system for providing a first valve configuration. The third main body contacts a second sub-quantity of the plurality of webs such that the first main body, the third main body, and the second sub-quantity define a second fluid path system for providing a second valve configuration.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims priority to German Patent Application No. 10 2019 216 243.6, filed Oct. 22, 2019, the contents of such application being incorporated by reference herein.

FIELD OF THE INVENTION

The present invention relates to a valve configuration parts kit for a pneumatic adjustment device of a vehicle seat as well as to a pneumatic adjustment device having a valve configuration parts kit of this type.

BACKGROUND OF THE INVENTION

In modern vehicle seats, fluid bladders or fluid chambers which can be filled with a pressure medium, in particular with a gaseous pressure medium such as compressed air, are situated as actuating elements in the region of the seat surface or backrest (together also referred to as seat contact face). These fluid chambers are a component part of a pneumatic adjustment device which is individually adaptable to the respective specific application and are supplied with the pressure medium by way of respective pressure medium lines. The volume of said fluid chambers is increased by filling a respective fluid chamber with pressure medium, or decreased by emptying said fluid chamber, respectively, such that the properties of the seat contact face, in particular the contour of the latter, can be varied. Suitable valves are typically used for filling or emptying, respectively, the respective fluid chamber, the pneumatic functionality of said valves having to be individually adapted to the specific application.

In this type of individual adaptation it is problematic that the suitable valves for each pneumatic adjustment device have to be selected and then individually pneumatically connected as a function of the desired function of said pneumatic adjustment device, for example only maintaining pressure or else a massage function. This takes time and increases the production costs for the corresponding pneumatic adjustment device.

SUMMARY OF THE INVENTION

Therefore an aspect of the present invention is to provide a simple and cost-effective valve configuration parts kit by way of which different connection diagrams of pneumatic valves, or different valve configurations, respectively, for a pneumatic adjustment device of a vehicle seat are enabled. It is furthermore an aspect of the present invention to provide a pneumatic adjustment device having a valve configuration parts kit of this type.

According to a first aspect of the invention, a valve configuration parts kit for providing at least two valve configurations for a pneumatic adjustment device of a vehicle seat is provided. A first valve configuration herein can be the preferred valve configuration for a first pneumatic adjustment device, for example, and a second valve configuration can be a preferred valve configuration for a second pneumatic adjustment device, for example. The valve configuration parts kit comprises the following components: a first plate-shaped main body, a plurality of wall-type webs which are attached to the plate-shaped main body and extend from the plate-shaped main body and which, conjointly with the plate-shaped main body, at least in part define fluid paths for a fluid that flows between the webs, and a second main body which is attached to the first main body, or a third main body which is attached to the first main body. The second main body herein is attached to the first main body in such a manner that the second main body contacts a first sub-quantity of the plurality of webs in a fluid-tight manner such that the first main body, the second main body, and the first sub-quantity of the plurality of webs define a first fluid path system for providing a first valve configuration. Furthermore, the third main body is attached to the first main body in such a manner that the third main body contacts a second sub-quantity, different from the first sub-quantity, of the plurality of webs in a fluid-tight manner such that the first main body, the third main body and the second sub-quantity of the plurality of webs define a second fluid path system, which is different from the first fluid path system, said second fluid path system providing a second valve configuration, different from the first valve configuration. In other words, the second main body and the third main body in the valve configuration parts kit can be mutually swapped in order to achieve a respective valve configuration for a respective pneumatic adjustment device.

An aspect of the invention herein is at least in part based on the concept that a plurality of valve configurations for a plurality of pneumatic adjustment devices are able to be provided by way of only a single valve configuration parts kit. On account thereof it is possible for the respective different requirements set for the pneumatic functions of the respective pneumatic adjustment device to be provided in a rapid and cost-effective manner by means of a single parts kit. An aspect of the invention is furthermore at least in part based on the concept that a valve configuration parts kit of this type can be provided in a simple and cost-effective manner in that a single first plate-shaped main body having a plurality of webs disposed thereon is used, and that further interchangeable main bodies (second main body or third main body) are attached to this single plate-shaped main body when required, said further interchangeable main bodies contacting either only a first sub-quantity or only a second sub-quantity of webs in such a manner that a first or a second valve configuration is generated. In the context of this disclosure, the term “first sub-quantity of the plurality of webs” refers to a first group of webs which in the first valve configuration are contacted by the second main body in a fluid-tight manner, and the term “second sub-quantity of the plurality of webs” refers to a second group of webs which in the second valve configuration are contacted by the third main body in a fluid-tight manner. The first group, or the first sub-quantity, respectively, of the webs, and the second group, or the second sub-quantity, respectively, of the webs herein can readily comprise webs which are present in the first sub-quantity as well as in the second sub-quantity of webs. However, not all members of the first sub-quantity of webs are identical to all members of the second sub-quantity of webs. This means that the first sub-quantity of webs comprises at least one web which is not also a member of the second sub-quantity of webs. In other words, the first sub-quantity and the second sub-quantity of webs differ in terms of at least one web which is not a member of both the first sub-quantity as well as the second sub-quantity of webs.

A valve configuration which is correspondingly adapted to the respective specific application is provided for a respective pneumatic adjustment device in that the interchangeable main bodies (second main body and third main body) contact in each case other sub-quantities of webs in a fluid-tight manner. On account thereof the costs for providing different valve configurations as well as for providing different pneumatic functions for dissimilar pneumatic adjustment devices are significantly reduced.

In one design embodiment of the valve configuration parts kit according to an aspect of the invention the second main body and the third main body are configured in a single main body element, and the single main body element in a first installed position contacts the first sub-quantity of the plurality of webs in a fluid-tight manner such that the first valve configuration is defined or generated, respectively, and the single main body element in a second installed position contacts the second sub-quantity of the plurality of webs in a fluid-tight manner such that the second valve configuration is defined or generated, respectively. This design embodiment is particularly simple and cost-saving since only a single main body element is now used instead of two separate main bodies, said single main body element as a function of the installed position generating the desired valve configuration for the respective pneumatic adjustment device.

According to one further design embodiment the webs in the direction of extent have the same height, and the second main body for forming the first fluid path system enables an overflow of the fluid only at predetermined first webs, and the third main body for forming the second fluid path system enables an overflow of the fluid only at predetermined (other) second webs. In other words, the respective main body (second main body or third main body) or the main body element, respectively, in the respective installed position (first installed position or second installed position) enables an overflow of the fluid either at predetermined first webs or at predetermined second webs. For example, the overflow by way of the predetermined first and second webs can be generated in that respective overflow ducts which permit a targeted overflow only by way of the predetermined first webs or second webs, respectively, are configured at the first/second installed position in the second/third main body, or in the main body element, respectively. The first and second webs herein again differ in terms of at least one web which is not both a member of the first webs as well as a member of the second webs.

According to one further design embodiment of the valve configuration parts kit according to an aspect of the invention, the functionality of two 3/2 valves is enabled in the first valve configuration, and the functionality of one 3/3 valve is enabled in the second valve configuration. It is possible on account thereof in the first valve configuration, for example, that two fluid bladders, or fluid chambers, respectively, can be filled or emptied, respectively, in a mutually independent manner. This is particularly advantageous in the case of massage system in which the pressure is not maintained or maintained only for a short time. By virtue of the functionality of a 3/3 valve in the second valve configuration, for example, a single fluid bladder can be selectively filled and emptied, and the pressure in the fluid bladder can be maintained, on the other hand. This is particularly advantageous in the case of systems in which pressure for the static seat contour adjustment is maintained for a long time.

According to one further design embodiment, the first fluid path system which in the first valve configuration is defined by the first main body, the second main body, and the first sub-quantity of the plurality of webs comprises the following components: an admission-pressure chamber which is able to be fluidically connected to a fluid source; a first valve chamber which by way of a first valve element is fluidically connected to the admission-pressure chamber and is able to be fluidically connected to a first fluid bladder of the pneumatic adjustment device; and a second valve chamber which is fluidically separated from the first valve chamber and by way of a second valve element is fluidically connected to the admission-pressure chamber and is able to be fluidically connected to a second fluid bladder of the pneumatic adjustment device. In this design embodiment, two fluid bladders in the first valve configuration of the valve configuration parts kit can thus be filled or emptied, respectively, in a mutually separate manner, for example. This is particularly advantageous in the case of massage systems.

According to one further design embodiment, the second fluid path system which in the second valve configuration is defined by the first main body, the third main body, and the second sub-quantity of the plurality of webs comprises the following components: an admission-pressure chamber which is able to be fluidically connected to a fluid source; a first valve chamber which by way of a first valve element is fluidically connected to the admission-pressure chamber; a second valve chamber which is fluidically connected to the first valve chamber and a third valve chamber which by way of a second valve element is fluidically connected to the second valve chamber and is able to be fluidically connected to a fluid bladder. In this design embodiment, a single fluid bladder can be selectively filled and emptied, and the pressure in the fluid bladder can be maintained, in the second valve configuration of the valve configuration parts kit. This is particularly advantageous in the case of systems in which pressure for the static seat contour adjustment is maintained for a long time.

In one preferred design embodiment the valve configuration parts kit moreover comprises a first valve element, in particular a first 3/2 valve element, which in the first valve configuration as well as in the second valve configuration fluidically connects the admission-pressure chamber to the first valve chamber, as well as a second valve element, in particular a second 3/2 valve element, which in the first valve configuration fluidically connects the admission-pressure chamber to the second valve chamber, and in the second valve configuration fluidically connects the second valve chamber to the third valve chamber.

According to a second aspect of the present invention, a pneumatic adjustment device for adjusting a contour of a seat contact face of a vehicle seat is provided. The pneumatic adjustment device according to the second aspect comprises the following components: a valve configuration parts kit according to the first aspect, wherein said valve configuration parts kit provides the first valve configuration; a fluid source which is fluidically connected to the admission-pressure chamber; a first fluid bladder for adjusting the contour of the seat contact face; and a second fluid bladder for further adjusting the contour of the seat contact face; wherein in the first valve configuration of the valve configuration parts kit the first fluid bladder is fluidically connected to the first valve chamber, and the second fluid bladder is fluidically connected to the second valve chamber.

According to a third aspect of the present invention, a pneumatic adjustment device for adjusting a contour of a seat contact face of a vehicle seat is provided. The pneumatic adjustment device according to the third aspect comprises the following components: a valve configuration parts kit according to the first aspect, wherein said valve configuration parts kit provides the second valve configuration; a fluid source which is fluidically connected to the admission-pressure chamber; and a fluid bladder for adjusting the contour of the seat contact face, wherein in the second valve configuration of the valve configuration parts kit the fluid bladder is fluidically connected to the third valve chamber.

The pneumatic adjustment device according to the second aspect thus enables controlled filling and emptying of two separate fluid bladders. As opposed thereto, the pneumatic adjustment device according to the third aspect enables controlled filling, emptying, and maintaining pressure of a single fluid bladder. Depending on whether the second main body or the third main body is used, both pneumatic adjustment devices can thus be achieved with the aid of the same valve configuration parts kit.

Elements of identical design or function are provided with the same reference signs across all figures.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference is first to be made toFIG.1which shows a schematic view of a valve configuration parts kit10. The valve configuration parts kit10can provide at least two different valve configurations for pneumatic adjustment devices. A first valve configuration of the valve configuration parts kit10is shown inFIG.1, said first valve configuration being used in a first pneumatic adjustment device12. A second valve configuration of the valve configuration parts kit10is shown inFIG.2, said second valve configuration being different from the first valve configuration and being used in a second pneumatic adjustment device13.

The individual pneumatic adjustment devices12,13will be described in more detail in the context ofFIGS.1and2. In order for the construction of the valve configuration parts kit10to be explained in more detail, reference is however first made toFIGS.3and4.

FIG.3shows a schematic view of the valve configuration parts kit10in which a first valve configuration is implemented.FIG.4shows a schematic view of the valve configuration parts kit10in which a second valve configuration is implemented.

In order for these two valve configurations to be generated or implemented, respectively, the valve configuration parts kit10comprises a first plate-shaped main body14and a plurality of wall-type webs16which are attached to the plate-shaped main body14and extend from the latter. The webs16, conjointly with the plate-shaped main body14, at least in part define fluid paths for a fluid which flows between the webs16, said fluid being provided, for example, by a fluid source of the pneumatic adjustment device12or13, respectively.

The valve configuration parts kit10furthermore has a second main body18which is attached to the first main body14, or a third main body20which is attached to the first main body14.

As can be seen inFIG.3, the second main body18is attached to the main body14, or is configured thereon, respectively, in such a manner that the second main body18does not contact all webs16in a fluid-tight manner. Rather, the second main body18is attached to the main body14, or is configured thereon, respectively, in such a manner that the second main body18contacts only a first sub-quantity of the plurality of webs16in a fluid-tight manner. For example, the second main body18is configured in such a manner that said second main body18does not contact a web22of the plurality of webs16in a fluid-tight manner but instead enables an overflow of fluid on the web22. In that the second main body18contacts only a first sub-quantity of the plurality of webs16in a fluid-tight manner, thus does not contact the web22in a fluid-tight manner, for example, the first main body14, the second main body18, and the first sub-quantity of the plurality of webs16form a first fluid path system24which is schematically indicated by an exemplary flow arrow. This first fluid path system24now provides a first valve configuration which can be used for a pneumatic adjustment device12as has been described in the context ofFIG.1, for example.

Reference is now to be made toFIG.4.

The valve configuration parts kit10ofFIG.4has the same first plate-shaped main body14having the webs16which extend from the plate-shaped main body14. As opposed to the valve configuration parts kit10ofFIG.3, the third main body20, not the second main body18, is attached to the first main body14. Specifically, the third main body20is attached to the first main body14, or is configured thereon, respectively, in such a manner that the third main body20again does not contact all webs16in a fluid-tight manner but rather does not contact a web26in a fluid-tight manner, said web26inFIG.3however having been contacted by the second main body18in a fluid-tight manner. In other words, the third main body20is attached to the first main body14, or is configured thereon, respectively, in such a manner that the third main body20contacts a second sub-quantity of the webs16in a fluid-tight manner, said second sub-quantity not being identical to the first sub-quantity of the webs16. For example, the third main body20is configured in such a manner that said third main body20does not contact the web26of the plurality of webs16in a fluid-tight manner but instead enables an overflow of fluid on the web26, whereas the web22is contacted by the third main body20in a fluid-tight manner. In that the third main body20contacts only a second sub-quantity (different from the first sub-quantity) of the plurality of webs16in a fluid-tight manner, thus does not contact the web26in a fluid-tight manner, for example, the first main body14, the third main body20, and the second sub-quantity of the plurality of webs16form a second fluid path system28which is schematically indicated by an exemplary flow arrow. This second fluid path system28now provides a second valve configuration which can be used for a pneumatic adjustment device13as has been described in the context ofFIG.2, for example.

To this point, interchangeable separate main bodies18and20have been discussed in the context ofFIGS.3and4. It is however conceivable that the second main body18and the third main body20are configured in a single main body element30, as is indicated in principle inFIGS.3and4. This single main body element30in a first installed position, as is shown inFIG.3, for example, can now have the functional mode of the second main body18in that said main body element30in this first installed position for forming the first valve configuration contacts the first sub-quantity of the plurality of webs16in a fluid-tight manner. This single main body element30in a second installed position, as is shown inFIG.4, for example, can however also have the functional mode of the third main body20in that said main body element30in this second installed position for forming the second valve configuration contacts the second sub-quantity of the plurality of webs16in a fluid-tight manner.

Furthermore, in the context ofFIGS.3and4, an overflow of fluid by way of the webs22(FIG.3) or26(FIG.6), respectively, has been achieved in that all webs16in the direction of extent from the plate-shaped first main body14have the same height, and the respective second main body18, or the third main body20, respectively, enables or provides, respectively, an overflow duct at the corresponding location. In other embodiments not shown it is of course also imaginable that the webs16do not all have the same height but the webs to be selectively provided with an overflow have a correspondingly lower height, and the main bodies18,20which in each case seal in a fluid-tight manner have a protrusion at these locations, said protrusion being compressible under certain circumstances. Alternatively, the main bodies18,20at the locations which seal in each case in a fluid-tight manner can have small webs which, in a manner complementary to the webs of the main body14, add up so as to form the full height and thus contact one another in a fluid-tight manner; in contrast, the small webs of the main bodies18,20are absent at the locations where an overflow is to be provided, on account of which an overflow duct is provided there.

The fluid-tight connection between the first main body14and the second main body18, or the third main body20, or the main body element30, respectively, in the respective installed position according to the prior art can preferably be established by adhesive bonding or fusing (friction welding, laser welding).

Reference is now to be made again toFIG.1in which the pneumatic adjustment device12is schematically illustrated.

The pneumatic adjustment device12uses inter alia the valve configuration parts kit10, wherein the latter provides the first valve configuration. The first valve configuration in the specific example ofFIG.1is provided in that the second main body18which is illustrated with hatched lines is attached to the plate-shaped first main body14in such a manner that the second main body18contacts only a first sub-quantity of the plurality of webs16. Some of the plurality of webs which extend from the plate-shaped main body14are provided with the reference sign16. As can however be seen inFIG.1, the second main body18does not contact all webs16in a fluid-tight manner. For example, first webs32of the plurality of webs16are not contacted in a fluid-tight manner by the second main body18so that an overflow of fluid by way of the first webs32is enabled there.

The second main body18now is configured in such a manner that a first fluid path system24is generated by virtue of the contact with the first sub-quantity of the plurality of webs16and the permitted overflow by way of the first webs32, said first fluid path system24ultimately generating a first valve configuration which is used in the pneumatic adjustment device12. In other words, the first sub-quantity of the plurality of webs16that is contacted in a fluid-tight manner by the second main body18, the first main body14, and the second main body18define the first fluid path system24which ultimately provides the first valve configuration.

The first valve configuration in the specific example ofFIG.1now is of such a type that the functionality of two 3/2 valves is achieved so that two fluid bladders can be filled and emptied in a mutually separate manner.

The pneumatic adjustment device12to this end has a first fluid bladder34for adjusting a seat contact face36of a vehicle seat38. This first fluid bladder34is fluidically connected to a first output40of the valve configuration parts kit10. The pneumatic adjustment device12furthermore has a second fluid bladder42which serves for further adjusting the seat contact face36of the vehicle seat38. This second fluid bladder42is fluidically connected to a second output44of the valve configuration parts kit10. The pneumatic adjustment device12furthermore has a fluid source46which is fluidically connected to an input48of the valve configuration parts kit10. For example, the fluid source46can be integrated in the vehicle seat38, as is shown in the specific example ofFIG.1. In other embodiments not shown, the fluid source46can however also be disposed outside the vehicle seat38.

In order for the separate filling or emptying, respectively, of the two fluid bladders34,42to be enabled, the first fluid path system24has an admission-pressure chamber50which is fluidically connected to the fluid source46. This admission-pressure chamber50is fluidically connected to a first valve chamber54by way of a controllable first 3/2 valve element52. On account of the second main body18moreover providing an overflow duct at one of the first webs32, a fluidic connection (by way of the first output40) is established between the first valve chamber54and the first fluid bladder34. The first fluid bladder34can now be filled with a fluid provided by the fluid source46by correspondingly actuating the first 3/2 valve element52, or be emptied, wherein a ventilation duct which for the first fluid bladder36is present in the pneumatic adjustment device12is not shown inFIG.1in order to avoid unnecessary complexity.

As is furthermore shown inFIG.1, the first fluid path system24moreover has a second valve chamber58which is fluidically connected by way of a controllable second 3/2 valve element56and is fluidically separated from the first valve chamber54. On account of the second main body18moreover enabling an overflow at the first webs32, a fluidic connection between the admission-pressure chamber50and the second 3/2 valve element56is achieved, on the one hand, and a fluidic connection between the second valve chamber58and the second output44of the valve configuration parts kit10is achieved, on the other hand. It is possible on account thereof that the second fluid bladder42can also be filled with a fluid provided by the fluid source46, or be emptied, respectively, by correspondingly actuating the second 3/2 valve element56, wherein a ventilation duct which is present for the second fluid bladder42is again not shown inFIG.1.

Summarizing, it can thus be established that the valve configuration parts kit10by means of the use of the second main body18provides a first valve configuration by way of which a pneumatic adjustment device12in which two fluid bladders34,42can be filled and emptied in a mutually independent manner can be achieved.

Reference is now to be made toFIG.2in which the pneumatic adjustment device13is schematically illustrated.

The pneumatic adjustment device13again uses the valve configuration parts kit10, wherein the latter now provides the second valve configuration. The second valve configuration is provided, for example, in that the third main body20which is illustrated with hatched lines is attached to the plate-shaped first main body14in such a manner that the third main body20contacts a second sub-quantity of the plurality of webs16. Some of the plurality of webs which extend from the plate-shaped main body14are again provided with the reference sign16. As can however be seen inFIG.2, the third main body20does not contact all webs16in a fluid-tight manner. For example, second webs60of the plurality of webs16are not contacted in a fluid-tight manner by the third main body20so that an overflow of fluid by way of the second webs60is enabled there.

The third main body20now is configured in such a manner that a second fluid path system28is generated by virtue of the contact with the second sub-quantity of the plurality of webs16and the permitted overflow by way of the second webs60, said second fluid path system28ultimately generating a second valve configuration which is used in the pneumatic adjustment device13. In other words, the second sub-quantity of the plurality of webs16that is contacted in a fluid-tight manner by the third main body20, the first main body14, and the third main body20define the second fluid path system28which ultimately provides the second valve configuration.

The second valve configuration in the specific example ofFIG.2is now of such a type that the functionality is achieved by a single 3/3 valve so that a fluid bladder can be filled and emptied in a controlled manner, and the pressure in the fluid bladder can moreover be maintained.

The pneumatic adjustment device13to this end has a fluid bladder62which again serves for further adjusting the seat contact face36of the vehicle seat38. This fluid bladder62can be a separate fluid bladder. Said fluid bladder62can however also be either of the two fluid bladders34,42ofFIG.1.

The fluid bladder62is fluidically connected to an output64of the valve configuration parts kit10. As becomes evident from a comparison withFIG.1, the fluid bladder62is connected to the second output44.

The pneumatic adjustment device13furthermore has the fluid source46which is fluidically connected to the input48of the valve configuration parts kit10.

In order for the controlled filling or emptying, respectively, of the fluid bladder62to be enabled, the second fluid path system28again has the admission-pressure chamber50which is fluidically connected to the fluid source46. This admission-pressure chamber50is fluidically connected to the first valve chamber54by way of the controllable first 3/2 valve element52. On account of the third main body20now not enabling an overflow duct to the first output40but instead contacting this web16in a fluid-tight manner, an uncontrolled outflow of fluid is prevented. The third main body20however simultaneously enables an overflow by way of either of the second webs60such that a fluidic connection is generated between the first valve chamber54and the second valve chamber58.

This second valve chamber58is now fluidically connected to the second 3/2 valve element56. However, the third main body20by virtue of the fluid-tight contact with one of the webs16prevents a fluidic connection between the second 3/2 valve element56and the admission-pressure chamber50. This can be seen from the fact that inFIG.1the overflow-capable fist web32is now contacted by the third main body20in a fluid-tight manner. The third main body20however simultaneously enables an overflow by way of either of the second webs60such that a third valve chamber66which by means of the controllable second 3/2 valve element56can selectively be fluidically connected to the second valve chamber58, is now achieved. This third valve chamber66is now fluidically connected to the fluid bladder62by way of the output64, or the second output44, respectively.

The fluid bladder62can now be selectively filled, emptied (wherein a ventilation duct for the fluid bladder62is again not shown inFIG.2), or the pressure in the fluid bladder62can be maintained, by correspondingly actuating the first and the second 3/2 valve elements52,56.

Summarizing, it can thus be established that the valve configuration parts kit10by means of the use of the third main body20provides a second valve configuration by way of which a pneumatic adjustment device13in which a fluid bladder62can be selectively filled and emptied and the pressure in the fluid bladder62can be maintained can be achieved. This second valve configuration is achieved solely in that the second main body18(seeFIG.1) is replaced by the third main body20(seeFIG.2).

As has already been mentioned, a changeover from the first valve configuration to the second valve configuration can however also take place in that the second main body18and the third main body20are configured in a single main body element30, and the main body element30in a first installed position generates the first valve configuration, and in a second installed position generates the second valve configuration.

While only two different valve configurations have been discussed up to this point in the context ofFIGS.1to4, it is of course also possible in other embodiments that more than two different valve configurations can be provided by means of the valve configuration parts kit10. For example, further (fourth, fifth, etc.) main bodies can be configured in such a manner that third, fourth, etc., valve configurations can be provided by the same valve configuration parts kit10.

In further embodiments not shown, the second, third, fourth, etc., main body of the valve configuration parts kit can also be configured in the form of a film which is correspondingly welded to the webs16in such a manner that the respective first, second, third, etc., valve configuration is provided by the valve configuration parts kit10. For example, the overflow ducts in this embodiment are created in that the film there is not adhesively bonded or welded to the webs of the first main body14, and said film by the operating pressure, which is above the ambient pressure, moreover can be bulged outward so as to achieve a corresponding overflow possibility, or an overflow duct, respectively.