WO2017186933A1

WO2017186933A1 - Mechatronic unit having a layered structure

Info

Publication number: WO2017186933A1
Application number: PCT/EP2017/060231
Authority: WO
Inventors: Jürgen Schneider; Matthias PENDZIALEK; Harald Rebien
Original assignee: Reinz-Dichtungs-Gmbh
Priority date: 2016-04-28
Filing date: 2017-04-28
Publication date: 2017-11-02
Also published as: DE202016102270U1

Abstract

The invention relates to a mechatronic unit having a plurality of superimposed layers, in which at least one channel extends in a region, in which said channel runs parallel to the layers, in at least two of the layers.

Description

Mechatronic unit with layer structure

The invention relates to a mechatronic unit having a multiplicity of layers arranged on one another, in which at least one channel extends in at least two of the layers in an area in which this channel runs parallel to the layers.

Mechatronics units are used to control devices such as transmissions of motor vehicles. A common form of control is the hydraulic control.

The mentioned motor vehicle transmission controls usually have two housing parts, which are usually produced in a casting process. The molded housing parts are connected via a transmission control plate. In such transmission controls channels for hydraulic fluid are formed by corresponding recesses are introduced into the housing parts. If the housing parts with the transmission control plate between see the housing parts connected as intended, the gear control plate closes the recesses in the housing parts to channels. At suitable locations, the transmission control plate includes passages through which the channels of the housing parts communicate with each other.

The production of the two housing parts by casting processes, in particular by injection molding, leads to a restriction of the possible channel geometries. Only those channel geometries can be realized that can be generated by a casting mold. In this way, for example, no channels crossing each other in one of the housing parts can be produced.

The object of the present invention is to provide a mechatronic unit which is constructed so that arbitrary channel shapes can be generated in it.

The object is achieved by the mechatronic unit according to claim 1 and the method for producing a mechatronic unit according to claim 27. The respective dependent claims indicate advantageous developments of the mechatronic unit according to the invention and the manufacturing method according to the invention.

According to the invention, a mechatronic unit is specified which has at least one layer system with a multiplicity of layers arranged on one another. The layers of a given layer system are advantageously arranged on top of each other and preferably extend parallel to one another. Advantageously, adjacent to each other of the layers adjacent to each other surface. The layer system can thus be a stack with a multiplicity of layers stacked on one another.

Optionally, a plurality of such layer systems can be provided. The layers of different layer systems can be parallel to each other or in a non-vanishing angle, for example, 90 ° to each other.

According to the invention, at least one is in the at least one layer system Channel formed for a hydraulic fluid. In this case, a channel is preferably understood to mean a cavity which at least in some areas has a cross section perpendicular to the layers, which is completely enclosed by the layer system and which emerges from the layer system at least in one, preferably in at least two openings. The openings mentioned are thus advantageously in at least one outer surface of the layer system.

According to the invention, at least one of the channels has at least one region in which it is at an angle of less than 90 ° to the surface of the layers of the

Shift system runs. Thus, at least in regions, the channel does not run perpendicular to the surface of the layers through which it passes. The fact that the channel runs in an area at a certain angle can be understood here to mean that a flow direction of fluid flowing through the channel from one of its openings flows in said area in the direction of a flow direction which is at said angle stands to the surface of the layers. As the direction in which the channel extends, so can be considered the direction of flow of fluid in the channel at the appropriate location or in the corresponding area.

Advantageously, the channel can be at least partially cylindrical in shape with an arbitrarily shaped cylinder base area. The cylinder base may be circular, square, rectangular or any other geometry. In regions where the channel has such a cylindrical shape, the direction in which the channel runs can be regarded as the direction in which the cylinder axis of this cylindrical shape lies. The channel may then be considered to be of the form formed by parallel displacement of the cylinder base in the direction of the cylinder axis.

According to the invention, the at least one channel in at least one of the regions in which this channel extends at an angle of less than 90 ° to the surface of the layers extends in at least two of the layers of the layer system in which the channel runs. If, for example, the channel runs at an angle of zero degrees to the surface of the layers of the layer system, then

Channel a height, measured in the direction perpendicular to the surface of the layers of the layer system, of at least two layers.

The described construction according to the invention makes it possible to create channels of any geometry in the mechatronic unit and in particular in the layer system. The channels can be formed by introducing passage openings into the layers, for example by means of punching. In this case, the passage openings can be introduced so that the passage openings of adjacent layers each continue the channel. The edge of the passage openings delimits the channel in the direction parallel to the surface of the layers. In the direction perpendicular to the surface of the layers of the channel can be limited by the surfaces of the layers.

In an advantageous embodiment of the invention, at least one of the channels can extend in an area in which this channel extends at an angle of less than 90 ° to the surface of the layers and extends into at least two layers in the direction perpendicular to the surface of the layers by at least two of the channel opposite the layers are limited. If the direction perpendicular to the surface of the layers is referred to as the top-bottom direction, the channel can thus be delimited in this area upwards and downwards by one of the layers in each case. This is particularly advantageous when the channel runs in this area parallel to the surface of the layers. If at least five of the layers are provided, channels can be realized which intersect. In this case, different channels can cross and / or different sections of the same channel. It should mean that two channels intersect, that they cross in a projection perpendicular to the plane of the layers. So you have at least one area in which they are above or below each other.

In an advantageous embodiment of the invention, several of the channels may extend over several of the layers. In this case, a plurality of these channels can each have an area in which they extend at an angle of less than 90 degrees to the surface of the layers. Advantageously, layers of the layer system can be connected to one another by at least section-wise soldering. Advantageously, each of the adjacent layers can be connected to one another by at least section-wise soldering.

In an advantageous embodiment of the invention, at least two adjacent ones of the layers or all adjacent ones of the layers can each be soldered together around at least one through opening in at least one of the respective adjacent layers. In this way, at the same time, the layers can be joined together and the passage openings between the layers can be sealed.

It is also possible and advantageous that at least two adjacent ones of the layers or all adjacent ones of the layers are in each case soldered together at least in sections in a line-shaped and / or planar manner. At least two adjacent layers or all adjacent layers can also be soldered to each other over the entire surface. The described possibilities of connecting adjacent layers can be combined as desired. Thus, some adjacent layers may be soldered around passageways while others may be adjacent

Layers, for example, linear, flat or full surface are connected to each other. For this purpose, the layers can be coated with solder before soldering. The solder coating has on a surface advantageously a layer thickness of 5 to 20%, in particular 7 to 12% of the thickness of the relevant layer, advantageously between 10 and 150 μιη, in particular between 20 and 80 μιη.

Advantageously, the layers soldered together are soldered together with aluminum solder and / or with ceramic solder.

In an advantageous embodiment of the invention, at least one of the layers can have at least one depression and / or at least one opening into which solder can flow during soldering. Such depressions or openings can receive excess solder. In the finished state, therefore, the wells or openings may be completely or partially filled with solder. In an advantageous embodiment of the invention, at least one channel may be provided which has at least one section in which this channel passes through at least three adjacent layers in the direction perpendicular to the surface of these layers. The channel can thus have a section perpendicular to the surface of the layers in this area.

In an advantageous embodiment of the invention, at least one of the channels in an area in which this channel runs parallel to the surface of the layers, open with opposite ends of this part in through holes in the same layer, which limits the channel in the direction perpendicular to the surface of the layers , Such a configuration may correspond to a U-shape of the channel in this area. It is likewise possible for the opposite ends of such a part to open into passage openings in different layers extending in particular on different sides of the channel. This results in a step-shaped course of the channel in the area concerned.

The realization of channels in layer systems according to the invention makes it possible to form channels in the layer system which can have any desired cross-sections. The cross-section of the channel in the direction perpendicular to its course may, for example, be circular, oval, square, rectangular or otherwise shaped. Generally speaking, at least one of the at least one channels may have at least part of its extent perpendicular to the surface of the layers and perpendicular to the direction of the course of the channel

Have cross-section, the extent of which varies in the direction parallel to the surface of the layers in the direction perpendicular to the surface of the layers. It is also possible for at least one of the at least one channels to have a cross-section perpendicular to the surface of the layers and perpendicular to one direction of the course of the channel, its extension in the direction perpendicular to the surface of the layers into the surface the layers of parallel direction varies. If the channel is formed by openings in the layers having cylindrical opening walls, the shape of the cross section may be stepped. However, the mentioned cross-sections of the channel can also be less stepped or continuously realized if the grading is reduced, for example, by embossing becomes.

In an advantageous embodiment of the invention, at least one flow control component, which is set up to control and / or regulate a flow through the channel, can be arranged in at least one of the channels. In particular, such a flow control component may be advantageously arranged to control and / or regulate, for example, a volume flow, pressure and / or other characteristic of the hydraulic fluid associated with the flow.

In an advantageous embodiment of the invention, at least one of the channels can pass through at least three of the layers in the direction perpendicular to the surface of these layers. The channel can then have a smaller cross-section in the region of one of these at least three layers than in the region of the other of the at least three layers. In this way, an aperture or bottleneck can be created in the channel.

Advantageously, a layer thickness of the middle of the at least three layers can be smaller than a layer thickness of the other at least three layers.

An aperture can also be made as an insert. This can advantageously have a thickness which corresponds to more than one layer thickness and extends, for example, exactly over two layers. Because of better punchability, it is advantageous if the diaphragm is arranged in the thinnest layer or layer. On the other hand, the aperture can also be a small hole in a relatively thick layer or layer, since this favors a braking effect of the aperture. The latter, however, is more difficult to produce.

An embodiment of the mechatronic unit according to the invention may also be advantageous, in which the mechatronic unit has at least two of the channels between which there is no fluid-permeable connection within the mechatronic unit. Fluid that is introduced into one of the channels can therefore not enter the other channel in the interior of the mechatronic unit. In this way, in the mechatronic unit separated fluid systems can be realized, for example, one for oil and one for water. Likewise, it can be avoided in this way that material identical media that flow with very different pressures, mix.

Advantageously, one or more valves can be realized in the mechatronic unit. For example, in at least one of the channels a check valve can be arranged, which is set up so that it allows a flow of hydraulic fluid through the channel in one direction and blocks in the opposite direction. Likewise, the hydraulic control module according to the invention can advantageously comprise at least one solenoid valve, at least one spring valve, at least one diaphragm element and / or at least one further valve element. In both a flow control device, such as a pressure control valve, and a check valve, it may be advantageous if they are located within the layers to allow flow of hydraulic fluid in an open direction to a component perpendicular to the plane of the layers having. Thus, in the preferred arrangement these valves should not only permit a flow of the hydraulic fluid in the plane of the layers or parallel to the surfaces of the layers.

Advantageously, it is also possible that at least one valve housing is arranged in at least one channel, which is at least partially formed by at least some of the layers. The valve housing may therefore extend through at least some of the layers. It may particularly preferably have a component of its extension, which is perpendicular to the layers. Such a valve housing may for example be part of a directional valve. Such a directional control valve may advantageously have an actuator, which may be particularly preferably elongated and may be arranged in the valve housing with its longitudinal direction perpendicular to the plane of the layers. At the same time, the operator can pierce the layers.

Advantageously, the mechatronic unit can have at least one non-planar valve housing which is soldered to the layer system. Such a For example, the valve housing may be arranged above that opening of one of the channels on that side of one of the outermost layers of the layer system which faces away from the layer system. The valve housing is then in communication with the corresponding channel in hydraulic fluid permeable connection and allows the control of fluid flow through this channel. The valve housing advantageously has a valve.

In addition to the already mentioned optional valve and diaphragm elements, the layer system can have further diaphragm and / or valve elements. Likewise, it is advantageously possible that the layer system has at least one magnetic, spring, sieve, or sensor element. A magnetic and / or sieve element can serve, for example, to absorb impurities carried along in the hydraulic fluid. The layers of the layer system may advantageously have a thickness of less than or equal to 4 mm, preferably less than or equal to 1.5 mm, more preferably less than or equal to 1 mm and / or greater than or equal to 0.2 mm, preferably greater than or equal to 0.3 mm , more preferably greater than or equal to 0.5 mm.

The thickness is measured in the direction perpendicular to the surface of the layer.

Particularly advantageously, at least some, preferably all, of the layers comprise or consist of aluminum or aluminum alloys. Aluminum layers are particularly advantageous if the mechatronic unit is produced by continuous soldering. The aluminum layers may on the one hand be produced in an aluminum injection molding process, but it is preferable to use sheets of aluminum alloys and to punch out the layers of these. Optionally, an intermediate layer made of another material, for example of steel, may be provided, for example as an insert in an aluminum frame. In principle, aluminum is preferred over steel, since the higher thermal conductivity of aluminum allows a connection by means of soldering, for example by means of a continuous furnace. It is also possible to use an intermediate layer with a plurality of holes, in which the holes allow a passage of solder and in which the arranged on both sides of the holes layer Layers are soldered through the holes. Further, the lower weight of aluminum over steel is advantageous.

Advantageously, solder and material of the layers should be matched to one another such that the melting temperature of the solder is below the melting temperature of the material of the layers. For example, aluminum layers whose melting temperature is 660 ° C or 670 ° C can be brazed with aluminum alloy brazing whose melting temperature can be from 500 ° C to 610 ° C, especially at 570 ° C to 590 ° C. For example, the aluminum alloys of group 3 (according to EN 573-3 / 4), in particular AA 3003 and AA 3005 can be used.

It is also preferred if the layers extend flat. The largest surfaces of the layers are therefore even in this case.

In an advantageous embodiment of the invention, the mechatronic unit may have at least one sealing layer, which limits the layer system to the outside, wherein the sealing layer may have sealing elements which are formed in the sealing layer, for example, as beads of a metallic gasket layer, and / or applied to the gasket layer , For example, as a partial or full-surface coating, in particular as sealing beads. Alternatively or additionally, soft-material sealing layers are also possible. At least one gasket layer is particularly advantageously arranged on that side of one or both outermost of the layers which faces away from the layer system. In this way, elements such as valves can be mounted on the layer system, which are sealed by the sealing elements.

Preferably, the layer system has at least three, preferably at least five, more preferably at least ten of the layers. The number of layers can be selected in practice depending on which channel geometries are to be realized. Basically, any number of layers greater than or equal to three are possible.

In an advantageous embodiment of the invention, the mechatronic unit can have at least one further of the layer systems, the layers of which may, for example, be perpendicular to the layers of the at least one other layer system.

The invention also includes a method for producing a mechatronic unit, advantageously a mechatronic unit designed as described above. In this case, solder is applied to at least one plate of a base material, and from at least one of the at least one plates of the base material, at least one layer is produced. It is possible that all layers of the at least on one surface, preferably over the entire surface, coated with solder base material are produced. However, it is also possible that some of the layers are made of another material that is not coated with solder on its surface. In this case, the production of the layers comprises that at least one passage opening is introduced into at least one of the layers. The passage openings introduced in this way, when the layers are arranged on top of one another, can assemble the at least one channel. The at least three layers are arranged on top of each other such that all immediately adjacent layers adjoin one another via at least one solder-coated surface. As already mentioned, layers with at least one solder-coated surface can be combined with layers without surfaces coated with solder. The layers arranged on one another are then heated to a melting temperature of the solder.

In the following, the invention will be explained by way of example with reference to some figures. The same reference numerals designate the same or corresponding features. The features described in the examples can also be realized independently of the specific example and combined between the examples.

It shows

FIG. 1 shows a mechatronic unit according to the invention with valve housings,

FIG. 2 shows an exemplary layer system in perspective sectional view. sees

3 shows an exemplary layer system in a sectional view, FIG. 4 shows examples of different channel shapes,

FIG. 5 shows an exemplary layer system with additional gasket layers,

FIG. 6 shows an example of a layer system according to the invention with recesses into which solder can flow.

7 shows a mechatronic unit according to the invention with a directional control valve, FIG. 8 shows a layer system according to the invention with a diaphragm layer,

9 shows a layer system according to the invention with two non-return valves, and

FIG. 10 shows a layer system according to the invention with contours exposed in sheet form.

FIG. 1 shows an example of a mechatronic unit according to the invention with a layer system 1 which has nine layers la to li arranged on one another.

The layer system 1 is shown in a cut-open state, as a result of which part of the internal structure of the layer system 1 becomes visible. It can be seen that the layer system 1 has a plurality of channels 2 for hydraulic fluid, some of which extend in at least one region parallel to a plane in which the layers la-li of the layer system 1 extend. For example, the channel 2a in the section to be recognized extends parallel to the plane in which the layers 1a to 1i extend. The channel 2a runs where it is parallel to the surface of the layers la to Ii, in three of the layers lf, lg and lh. The channel 2a thus extends in three of the layers lf, lg and lh. Also, the channel 2b extends in three of the layers, namely the layers 1b, 1c and 1d. The channel 2c has, for example an area in which it is parallel to the plane of the layers la to Ii. In this area, the channel 2c extends in the layers lf, lg and lh. The channels 2 are in the areas where they are parallel to the plane of the

Layers la to Ii extend and extend in at least two layers, limited in the direction perpendicular to the surface of the layers la to Ii direction by two relative to the corresponding channel 2 of the layers la to Ii. For example, the channels 2a and 2c are bounded by the layers le and Ii, which face each other with respect to the corresponding channel. The channel 2b is bounded, for example, by the layers 1a and 1e facing each other with respect to the channel 2b.

Some of the channels 2, such as the channel 2c, have an area where they pass through three or more adjacent ones of the layers la to le in to the surface of these layers in the vertical direction.

In the example shown in FIG. 1, the mechatronic unit also has passage openings 3, which extend through all the layers 1 a to 1 i of the layer system 1. These passage openings 3 can be used for example for screwing.

In the example shown in FIG. 1, the mechatronic unit has three valve housings 4a, 4b and 4c, which are arranged on an upper side of the layer system 1. These valve housings 4a to 4c have fluid openings 5 through which fluid can flow into and out of the valve housings 4a to 4c. The fluid openings 5 are arranged via openings in the uppermost layer 1a of the layer system 1, through which in each case one of the channels 2 opens in the layer la. Hydraulic fluid can therefore enter from the corresponding channel 2 through the uppermost layer 1a into the corresponding valve housing 4a through one of the valve openings 5 or enter the channel 2 from the valve housing. The valve housings 4a, 4b and 4c also have openings 6 on their upper side, through which fluid can enter or exit the valve housing. By not shown in Figure 1 valves in the valve housings 4a, 4b and 4c selective connections between the openings 5 and the openings 6 can be made. FIG. 2 shows an example of a layer system 1 with seven layers 1a to 1g. The layer system 1 shown in Figure 2 is truncated, so that an internal structure of the layer system 1 can be seen. The layer system 1 in turn has channels 2 in the interior, which extend at least in sections parallel to the plane of the layers la to lg. The layer system in FIG. 2 can be, for example, a transmission mechatronics. As in FIG. 1, at least some of the channels 2 extend where they run parallel to the planes of the layers 1 a to 1 g of the layer system 1 through at least two of the layers 1 a to 1 g. For example, the channel 2a extends through the layers le and lf. The channel 2b extends through the layers 1b and 1c, as does the channel 2c. The channel 2c is connected to the channel 2a via an opening in the layer ld. On its opposite side, the channel 2c terminates in an opening in the uppermost layer 1a.

In the example shown in FIG. 2, the layer system 1 also has a passage opening 3, which has a circular cross-section perpendicular to the passage axis. The passage opening is perpendicular to the plane of the layers la to lg.

FIG. 3 shows a section through an exemplary layer system according to the invention. The layer system 1 in this case has five layers la to le. A passage opening 3 extends perpendicular to the layer planes through all layers la to le. A channel 2a opens with one side twice in the uppermost layer 1a, namely in the two openings 2a 'and 2a ", and with the other side in the lowermost layer le in the opening 2a *. In one subregion it extends in two directions parallel to the plane of the layers la to le and extends in this area in the layers lb and lc. This channel guide allows, for example, the supply of a hydraulic fluid from the openings 2a 'and 2a * to the opening 2a ". Thus, hydraulic fluid can flow both from one surface of the layer system to the opposite surface, ie also from one subregion of one surface to another subregion of the same surface.

FIG. 4 shows a section through a layer system 1 with eight layers 1 a to 1 h, all of which are produced from a 0.2 mm thick sheet of an aluminum alloy. However, only the layers lb to lg are coated on both sides of the entire surface with solder, while the layers la and lh are uncoated even before soldering. In the layer system shown two channels 2a and 2b are realized, which extend in the direction perpendicular to the plane of the figure. Therefore, in FIG. 4, a cross section of the channels 2a and 2b can be seen in the direction perpendicular to the direction in which the channels run. The cross section of the channel 2a is rectangular. It is bounded by the opening walls of the openings in the layers 1b, 1c, 1d, le, 1f and 1g, and up through the layer 1a and down through the layer 1h.

The channel 2b has a stepped circular cross-section. It can be seen that the extent of this channel 2b varies in the direction parallel to the surface of the layers la to lh in the direction perpendicular to the surface of the layers la to lh. In addition, the extent of the cross section in the direction perpendicular to the surface of the layers 1 a to 1 h in the direction of the surface of the surface also varies

Layers parallel direction.

Any other cross-sectional geometries can be realized in a corresponding manner. The grading can be reduced or avoided altogether by embossing the openings introduced into the layers 1b to 1g.

FIG. 5 shows a section through an example of another embodiment of a mechatronic unit according to the invention with three layers 1a, 1b, 1c, through which a channel 2a extends. Again, the adjacent layers la and lb and lb and lc are each soldered in pairs over the entire surface by means of a solder, here by means of an aluminum solder. Layers 1a, 1b and 1c were produced from differently thick aluminum sheets, of which only the sheet from which inner layer 1b is punched out is completely coated with solder on both sides.

In the example shown in FIG. 3, the mechatronic unit according to the invention has two sealing layers 39a and 39b, between which all layers 1a, 1b and 1c are arranged. The gasket layers 39a and / or 39b may comprise or consist of, for example, steel, structural steel, spring steel or aluminum. The sealing layers 39a and 39b have beads 30a and 30b, respectively, which circumscribe the openings in the corresponding layer 1a or 1c. A bead roof of the full beads 30a and 30b is oriented away from the layers 1a to 1c.

The connection of the gasket layers 39a and 39b with the layers la and lc takes place here as known from WO 2013011132 AI only locally. For this purpose, the uppermost layer 1a is recessed in the section 41a, a web 43a of the gasket layer 39a, which is only partially detached, has been deformed into the plane of the layer 1a and is held there by two projections 22a of the layer 1a. The other connection point shown is of comparable design, an only partially separated web 43b of the gasket layer 39b has been deformed into the plane of the layer 1c and is held there by two projections 42b of the layer 1c. However, here the recess 41b is not only provided in the layer 1c, but continues in the two other layers 1b, 1a. The recess 41b could thus be used as a particularly large reservoir for receiving excess solder, as will be explained with reference to FIG.

FIG. 6 shows a further example of a layer system according to the invention with five layers 1a to 1e. Similar to FIG. 3, in FIG. 6 a channel 2a is realized, which extends in a region in which it runs parallel to the plane of the layers 1a to le in the layers 1b, 1c and 1d and in opposite layers la and le in FIG Openings ends. There is also shown a channel 2b exiting the figure plane which extends in the layers 1b, 1c and 1d.

In the example shown in FIG. 6, recesses 7 and an opening 7 ', into which solder can flow, are introduced into the layers 1b and 1d. When soldering the layers la to le, therefore, excess solder can flow into these depressions 7 or the opening 7 '. In the finished state, the recesses 7 and / or the opening 7 'may be completely or partially filled with solder.

The neighboring layers la to le can here at least partially be soldered together. A soldering can for example take place around a through opening 2a, 3a or 3b. However, it is also possible for adjacent layers to be soldered to one another at least in sections in a line-shaped and / or flat and / or over the entire surface. In the example of Figure 5 so not necessarily pre-coated with solder aluminum sheets are used.

FIG. 7 shows a further example of a mechatronic unit according to the invention. In the example shown in FIG. 7, the mechatronic unit has a first layer system 1 and, in addition, a second layer system 8. The first layer system 1 has eleven layers la to lk and the second layer system 8 has five layers 8a to 8e. The layers 8a to 8e of the second layer system 8 extend perpendicular to the layers la to lk of the first layer system 1. For example, all liehe layers of the layer system 8 are coated on its right-facing surface over the entire surface with a ceramic solder, with the exception of Layer lk all layers of the layer system 1 are coated on its downwardly facing surface over its entire surface with a ceramic solder. This allows easy connection and sealing of the two layer systems.

In the example shown in FIG. 7, the mechatronic unit has a directional control valve 9. The directional control valve 9 has an actuator 10, which is displaceable in the direction perpendicular to the plane of the layers of the layer system 1 between two positions. By adjusting the actuator 10, a compound of a

Channel 2c extending in the layers le and lf may optionally be made with a channel 2a extending in the layers 1b and 1c, or with a channel 2b extending in the layers 1h and 1i. For this purpose, the valve 9 has an opening to the channel 2a, an opening to the channel 2b and an opening to the channel 2c. If the actuator 10 is in the position shown in FIG. 7, there is a fluid-permeable connection between the channel 2b and the channel 2c. If the actuator 10 is moved to the other position, vertically upwards in FIG. 7, a connection is established between the channel 2a and the channel 2c.

The channel 2c extends at its end facing away from the directional control valve 9 in the second layer system 8. Leaving the layer system 1, it initially runs in the direction perpendicular to the layers 8a to 8e of the layer system 8 and then extends in the layers 8b and 8c and there has a flow direction parallel to the layers 8a to 8e of the layer system 8th.

The channel 2a opens at its end facing away from the valve 9 through an opening in the uppermost layer la in a port 22 which is formed here as a right-angled pipe. Furthermore, FIG. 7 schematically shows a fastening element 26 which comes to rest on the uppermost layer 1 a and is likewise fixed on the surface of this layer by means of soldering. The fastening element 26 may be formed, for example, as a threaded bolt, so that via this attachment of the hydraulic control module to another component is possible.

FIG. 8 shows another example of a layer system 1 according to the present invention. The layer system 1 in this case has eight layers la to lh. A channel 2 extends from an opening in the uppermost layer la in layers lb and lc parallel to the plane of the layers, then perpendicular to the plane of the layers through layers ld, le, lf and lg and then parallel in layer lg to the plane of the layers, to finally step outward in the layer lh. The channel 2 is formed by passage openings which are introduced into the layers la to lh. In the example shown in FIG. 8, the opening in the layer 1d has a much smaller diameter than in the adjacent layers le and lc, as a result of which the layer 1d acts as a diaphragm 24 in the channel 2. Advantageously, the layer 1d is made thin to simplify the processing. FIG. 9 shows a further example of a layer system 1 according to the invention with eleven layers 1 a to 1 k. A channel 2 extends in the layer system 1, entering the layer system through the uppermost layer 1a, then running parallel to the layer planes in the layers 1b and 1c, then running perpendicular to the layer planes through the layers ld to lh and then into the layer plane Layers Ii and Ij parallel to the layer planes extend to exit through an opening in the bottom most layer lk. In the shown in Figure 9 For example, a ball check valve 11 is arranged in the channel 2 in the region in which the channel 2 passes through the layers Ii to lh. The ball check valve 11 has a stop or valve seat 12 in the downward direction, through which a channel 15 passes. A ball 13 is pressed by a spring 14 in the stop 12 against the upper opening of the channel 15 and closes it normally. Now flows fluid from below, that is, through the opening in the layer lk through the channel 2, so this pushes the ball 13 against the spring force 14 upwards, whereby the channel 15 is released and the fluid can flow through.

By way of example, on both sides of the check valve 11, two alternative possibilities for fastening this check valve 11 in the layer system 1 are shown. While a thread 12a is shown on the right side, an interference fit 12b is indicated on the left side. Alternatively, the check valve 11 could also be soldered to the layer system 1.

In Figure 9, a further check valve 16 is shown, which is designed as a resting on a sealing bead 17 plate 18 beyond. The sealing layer 17 is introduced into a metal sheet 20 which is clamped in the layer le. The plate 18 is cut in the example shown from a sheet 21, which is also clamped in the layer le. The plate 18 is connected to the rest of the sheet 21 via a cut spring 14 ', which presses the plate against the bead 17. Placed opposite the wafer is a stop 19 which is formed by a portion of the sheet 23. If fluid now flows from below against the leaflet 18, this is lifted and pressed against the stop 19. In this case, a passage opens through the valve 16 to the plate 18 over.

The walls of the layers ld to lh around the two valves 11, 16 each form a valve housing 29 here.

Both exemplary check valves 11 and 16 of FIG. 9 are disposed within the laminar structure and, when opened, permit flow of the hydraulic fluid in a direction having at least one directional component perpendicular to the plane of the layers, indeed predominantly in the direction perpendicular to the plane Layer of layers runs. FIG. 10 shows another example of a layer system 1 according to the present invention. The layer system 1 in this case has five layers la to le. In the layer system 1, a channel 2 is introduced. It can be seen that the concept of the invention, the formation of layers freestanding

Contours allowed. The superimposed end portions of the sheet-like freestanding contours form a sufficiently stable support structure, wherein the freestanding contours are formed differently in each layer. The result is a central cube, which is comparable in function to a column, with no flow obstructing the cross-sectional constriction in the entire channel. Similarly, intersecting channels can also be established.

Claims

claims

1. Mechatronic unit, comprising

at least one layer system (1, 8) having a multiplicity of layers (la to lk, 8a to 8e) arranged on one another,

wherein in the layer system (1, 8) at least one channel (2, 2a, 2b, 2c) is formed for hydraulic fluid in at least a range at an angle of less than 90 degrees to the surface of the layers (la to lk, 8a to 8e) of the layer system (1, 8),

wherein the at least one channel (2, 2a, 2b, 2c) extends in at least one of the at least one regions in which this channel extends at an angle of less than 90 degrees to the surface of the layers (la to lk, 8a to 8e), in at least two of the layers (la to lk, 8a to 8e) extends.

2. mechatronic unit according to the preceding claim,

wherein at least one of the at least one channels (2, 2a, 2b, 2c) in at least one of the at least one regions in which this channel (2, 2a, 2b, 2c) is at an angle of less than 90 degrees to the surface of the layers ( la to lk, 8a to 8e) and extending in at least two of the layers (la to lk, 8a to 8e) in the direction perpendicular to the surface of the layers (la to lk, 8a to 8e) by at least two with respect to the channel ( 2, 2a, 2b, 2c) opposite the layers (la to lk, 8a to 8e) is limited.

3. mechatronic unit according to one of the preceding claims, wherein the layer system (1, 8) at least five layers (la to lk, 8a to 8e) and wherein two of the channels (2, 2a, 2b, 2c) and / or two sections one of the channels (2, 2a, 2b, 2c) in a projection in the direction perpendicular to the surface of the layers (la to lk, 8a to 8e) cross over. Mechatronic unit according to one of the preceding claims, wherein at least two adjacent of the layers (la to lk, 8a to 8e) are soldered together at least in sections.

Mechatronic unit according to one of the preceding claims, wherein at least two adjacent of the layers (la to lk, 8a to 8e) or all adjacent of the layers (la to lk, 8a to 8e) in each case by at least one through hole in at least one of the respective adjacent layers (la until lk, 8a to 8e) are soldered around each other.

Mechatronic unit according to one of the preceding claims, wherein at least two adjacent of the layers (la to lk, 8a to 8e) or all adjacent layers (la to lk, 8a to 8e) in each case at least partially soldered line and / or surface and / or full surface each other are.

Mechatronic unit according to one of the two preceding claims, wherein the layers soldered together are soldered together with aluminum solder and / or with ceramic solder.

Mechatronic unit according to one of the preceding claims, wherein at least one of the layers (la to lk, 8a to 8e) at least one recess (7) and / or at least one opening (7 ') can flow into the solder and / or partially or completely filled with solder.

Mechatronic unit according to one of the preceding claims, wherein at least one of the at least one channels (2, 2a, 2b, 2c) on at least part of its extent at least three adjacent of the layers (la to lk, 8a to 8e) in the surface of these layers (la to lk, 8a to 8e) passes in the vertical direction.

Mechatronic unit according to one of the preceding claims, wherein at least one parallel to the surface of the layers (la to lk, 8a to 8e) extending part of at least one of the channels (2, 2a, 2b, 2c) with opposite ends of this part in openings in the same of the channel (2, 2a, 2b, 2c) in the direction of the surface of the layers (la to lk, 8a to 8e) perpendicular direction limiting layers (la to lk, 8a to 8e) opens.

Mechatronic unit according to one of the preceding claims, wherein at least one of the at least one channels (2, 2a, 2b, 2c) on at least part of its extension to the surface of the layers (la to lk, 8a to 8e) perpendicular and to a direction of a course of the channel (2, 2a, 2b, 2c) has a vertical cross-section whose extension varies in the direction parallel to the surface of the layers (la to lk, 8a to 8e) in the direction perpendicular to the surface of the layers (la to lk, 8a to 8e) ,

Mechatronic unit according to one of the preceding claims, wherein at least one of the at least one channels (2, 2a, 2b, 2c) on at least part of its extension to the surface of the layers (la to lk, 8a to 8e) perpendicular and to a direction of a course of the channel (2, 2a, 2b, 2c) has a vertical cross-section whose extension varies in the direction perpendicular to the surface of the layers (la to lk, 8a to 8e) in the direction parallel to the surface of the layers (la to lk, 8a to 8e) ,

Mechatronic unit according to one of the preceding claims, wherein in at least one of the at least one channels (2, 2a, 2b, 2c) at least one flow control member (11, 16, 24) is arranged, which is a volume flow, a pressure and / or a controlling and / or regulating other property of the hydraulic fluid through the channel (2, 2a, 2b, 2c).

Mechatronic unit according to one of the preceding claims, wherein at least one of the at least one channels (2, 2a, 2b, 2c) at least three of the layers (la to lk, 8a to 8e) in the surface of these layers (la to lk, 8a to 8e) the channel (2, 2a, 2b, 2c) in the region of one of these at least three layers (la to lk, 8a to 8e) has a smaller cross-section than in the region of the other of these at least three layers (la to lk, 8a to 8e).

15. mechatronic unit according to one of the preceding claims, wherein in the mechatronic unit at least two of the channels (2, 2a, 2b, 2c) are formed, between which within the

Mechatronic unit no fluid permeable connection exists.

16. mechatronic unit according to one of the preceding claims,

wherein a check valve (11, 16) is arranged in at least one of the at least one channels (2, 2a, 2b, 2c), which is arranged to allow a flow of hydraulic fluid through the channel (2, 2a, 2b, 2c) allowed in one direction and blocked in the opposite direction.

17. The mechatronic unit according to claim 13, wherein the at least one flow control component (24) and / or the at least one check valve (11, 16) are arranged such that, when open, they allow a flow of the hydraulic fluid in one direction a component perpendicular to the plane of the layers (la to lk, 8a to 8e).

18. Mechatronic unit according to one of the preceding claims,

further comprising a valve housing (29), which is at least partially formed by at least some of the layers (la to lk, 8a to 8e).

19. mechatronic unit according to one of the preceding claims,

further comprising at least one non-planar valve housing (4a, 4b, 4c), wherein the non-planar valve housing (4a, 4b, 4c) with the layer system (1, 8) is soldered.

20. mechatronic unit according to one of the preceding claims,

comprising at least one valve and / or at least one valve housing (4a, 4b, 4c), which is arranged on an outer of the layers (la, le, lg, lh, lk, 8a, 8e) of the layer system (1, 8) and hydraulic fluid - Permeable to at least one of the at least one channels (2, 2a, 2b, 2c) is connected. Mechatronic unit according to one of the preceding claims, wherein the layers (la to lk, 8a to 8e) has a thickness of less than or equal to 4 mm, preferably less than or equal to 1.5 mm, particularly preferably less than or equal to 1 mm and / or greater than or equal to 0 , 2 mm, preferably greater than or equal to 0.3 mm, more preferably greater than or equal to 0, 5 mm.

Mechatronic unit according to one of the preceding claims, wherein several of the layers (la to lk, 8a to 8e), preferably all of the layers (la to lk, 8a to 8e), comprise or consist of aluminum.

Mechatronic unit according to one of the preceding claims, wherein the layers (1a to lk, 8a to 8e) extend flat.

Mechatronic unit according to one of the preceding claims, further comprising at least one gasket layer (39a, 39b) which limits the layers (1a to lk, 8a to 8e) to the outside, the gasket layer (39a, 39b) having sealing elements (30a, 30b), which are molded into the gasket layer and / or applied to the gasket layer.

Mechatronic unit according to one of the preceding claims, wherein the at least one layer system (1, 8) at least three, preferably at least five of the layers (la to lk, 8a to 8e), preferably at least ten of the layers (la to lk, 8a to 8e) ,

Mechatronic unit according to one of the preceding claims, comprising at least one further of the layer systems (8, 1) whose layers (8a to 8e, la to lk) are perpendicular to the layers (la to lk, 8a to 8e) of the at least one layer system (1 , 8th).

Method for producing a mechatronic unit,

in which

Lot is applied to at least one plate of a base material, from at least one of the at least one plate of the base material at least one layer is produced, wherein the production of the layers comprises introducing at least one through-opening into at least one of the layers, the at least one layer being arranged on top of one another such that all immediately adjacent layers adjoin one another via at least one solder-coated surface,

and the layers stacked on each other are heated to a melting temperature of the solder.

A method according to the preceding claim, wherein before the solder is heated, at least one uncoated layer and at least one layer coated with solder are arranged adjacent to one another via the solder.

29. The method according to one of the two preceding claims, where a mechatronics unit according to one of claims 1 to 26 Herge provides.