DE10304324A1 - Electrical connection device and electro-fluid control device equipped with it - Google Patents

Abstract

The electrical connector has first and second contact arrangements (34) formed by end sections of a one-piece chain contact extending between first and second contacting regions (27,28) and a third contact region (29) lies between the first and second contact regions in the chain direction (17). A third contact arrangement (35) is formed by chain contact surfaces diverging from the plane (26) of the chain in the normal direction. An independent claim is also included for the following: (a) an electrofluidic controller with at least one electronic control module.

Description

The invention relates to an electrical Connection device for transmission serial signals to and / or from electrical arranged in a row Consumers, in particular electrically operated valves, with one extending modular electrical in a chaining direction Linking strand, the several successive in the linking direction and to produce a plurality of continuous electrical connection strands on the mutually facing sides releasably electrically contacted Contains chaining modules, each an areal Have extent and aligned in a common chaining plane are, each concatenation module at its opposite to each other end portions oriented in the chaining direction first and has second contacting areas, in each of which one is parallel row running at right angles to the chaining plane complementary first or second contact means is provided, of which the opposite each other in the chaining direction first and second contact means connected in pairs and with the concatenation modules on one side of the concatenation level a third contacting area with each pair connected first and second contact means and connected Contacting a consumer provided third contact means exhibit. The invention further relates to such an electrical Connection device equipped electrofluid control unit.

With one in the EP 1 041 327 A2 described arrangement of this type, a plurality of consumers formed by electromagnetically actuated valves are arranged in a row and are controlled by electrical signals which are supplied via a modular electrical interlinking chain extending parallel to the row of consumers. The interlinking strand is composed of several interlinking modules, each assigned to a consumer, each of which has a printed circuit board as a carrier element, to which three electrical plugs are soldered to form first, second and third contact means. The plugs forming the first and second contact means lie opposite one another in the daisy chain direction, the first and two th contact means being electrically connected in pairs in such a way that serial signals can be looped through the daisy chain in a 1: 1 daisy chain. The connector provided with a third contact means for tapping to the consumer is offset with respect to the other two connectors transversely to the chaining direction via conductor tracks of the circuit board with the contact means of the other two connectors.

This known connection device is relatively complex to manufacture and also requires a lot of space, of the desired reduction in size with the connection device equipped control unit is a hindrance.

With one from the DE 198 01 234 C2 In the known arrangement, the electrical interlinking strand consists of electrical contacts designed as metallic contact lugs, which are designed to be resilient in the interlinking direction. The contacts are an integral part of the consumer to be controlled - here: valves - and come into contact with each other in the assembled state of the control unit. To contact the respective consumer, the resilient electrical contacts seem to be soldered directly to the consumer in question. The associated manufacturing effort is again not small.

Finally describes the DE 197 06 636 C2 a used in an electrofluid control device connecting device which has a modular electrical interlinking strand, in which the first and second contact means having electrical contacts are in turn one-piece spring contacts. However, this connection device is only suitable for parallel signal transmission, for which purpose the paired first and second contact means within the interlinking modules are arranged offset to one another transversely to the interlinking direction. With the exception of a connecting strand forming the mass, no tapping on the consumer side is provided in the other connecting strands within the interlinking modules, so that corresponding third contact means are missing. In addition, the consumer is not contacted in the normal direction of the link level, but at right angles to it.

It is the task of the present Invention, an electrical connection device, in particular as To create part of an electrofluid control unit that stands out a cheaper one and space-saving design.

To achieve this object, it is provided that the first and second contact means are formed by the end sections of one-piece interlinking contacts extending between the first and second contacting regions and that the third contacting region lies in the interlinking direction between the first and second contacting regions, the third contact means from in are formed in the normal direction from the interlinking plane facing contact surfaces of the interlinking contacts, which are acted upon by a consumer-side counter-contact surface in are resilient in the normal direction of the linkage plane.

The task is also solved by an electro-fluid control unit with at least one electronic control module and with several electrical actuated Valves as consumers, being used for electrical interlinking between a connection device with the control module and the valves the aforementioned features is provided.

In the connection device according to the invention, each interlinking module is equipped with a plurality of one-piece interlinking contacts, the opposite end sections of which form the first and second contact means, so that no soldering connection to printed circuit boards is required for the electrical contacting of the individual pairs of first and second contact means. In addition, the third contact means are also an integral part of the respectively assigned interlinking contact, so that all three aforementioned contact means can be provided integrally by a single interlinking contact. The manufacture and assembly of the individual interlinking modules is thus very simple and inexpensive. Another great advantage is the contact reliability that can be achieved with the third contact means, which can be attributed to the fact that these third contact means are formed directly by contact surfaces formed on the interlinking contacts, which are oriented in the normal direction of the interlinking plane, so that they make contact in the normal direction of the interlinking plane can yield resiliently and at the same time build up a restoring force which causes high contact reliability. Finally, there is a very compact arrangement, in which the third contacting area containing the third contact means lies in the interlinking direction between the first and second contacting areas and, consequently, the three contacting areas are aligned in a quasi-linear manner, which takes up much less space than, for example, that in FIG EP 1 041 327 A2 described, laterally offset arrangement.

Advantageous further developments of Invention emerge from the subclaims.

It is advantageous if the daisy chain contacts, seen in the normal direction of the concatenation plane, have a linear and thus very easy to produce course. Is expedient it also to arrange the third contact means so that they too in a direction parallel to the concatenation plane and transverse to the concatenation direction Row are, this row of third contact means parallel to the rows of first and second contact means.

For certain control and / or diagnostic functions may be required be to not form single chain contacts consistently, making the electrical signals mandatory to the connected consumer have to go through. In this case, additional to the one-piece Interlinking contacts at least one broken interlinking contact be provided, in which case the two resulting contact parts each form a resilient third contact means so that the Contacting to the adjacent chain modules and also to the assigned consumers using the same technology as for the one-piece, continuous Concatenation contacts expires.

There is also the possibility to choose between neighboring interlinking modules special intermediate interlinking modules to turn on where the daisy chain contacts are not third contact means have or for example for an intermediate feed electrical signals are formed.

The first and second contact means forming end sections of the interlinking contacts are expedient equipped with first and second contact surfaces that each other oriented opposite to the normal direction of the concatenation plane are so that they are consecutive in the contacted state Interlinking modules with mutually facing first and second contact surfaces in reach under each other in the chaining direction. A yourself here he giving advantage is that the contacting force, such as in the case of the third contact means, in the normal direction of the Chaining level runs, so through an associated support structure, for example a surrounding housing, the contacting forces be taken safely. This is a very flat version of the Mating zone between successive chain modules possible.

It is particularly beneficial if the interlinking contacts are formed by spring clips, in particular as stamped and bent parts accomplished are.

Each chaining module is expedient a housing assigned to the connecting device in which it can be locked in place is. This housing can, in particular releasably, are connected to the consumer to be controlled.

The invention is explained below the accompanying drawing explained. They show in detail:

1 a possible embodiment of an electrofluid control device which is equipped with a preferred design of the electrical connection device

2 a section of the arrangement according 1 in longitudinal section according to section line II-II, a chaining module being shown which is contacted both with two adjacent further chaining modules and with one or more consumers,

3 the arrangement 2 in an explosive representation to clarify the state before contacting,

4 a plan view of the arrangement 1 , wherein only one consumer module is shown, which can be equipped with several consumers, but which are not shown,

5 a section of the interlinking strand of the electrical connection device, three successive interlinking modules being shown in the separated state,

6 a single chaining module in perspective, and

7 the chaining module 6 in an exploded view, wherein the interlinking contacts are shown separately from an assigned plate-like carrier element of the interlinking module.

The 1 shows an example of an electro-fluidic and preferably electropneumatic control unit 1 , the several in a row direction indicated by a double arrow 2 consecutively arranged electrical consumers 3 contains. In the exemplary embodiment, the electrical consumers 3 of electrically operated valves 3a formed, in particular from multi-way valves, the at least one electric drive unit 4 contain, for example an electromagnetically or piezoelectrically actuable pilot valve.

In the exemplary embodiment, the electrical consumers 3 in individual consumer modules 5 summarized the exemplary four electrical consumers 3 contain. Every consumer module 5 has a support block 6 on which the electrical consumer 3 are mounted, the support blocks 6 are sealed together and have internal fluid channels leading to an assembly area 7 emit where they with the electrical consumers installed there 3 stay in contact.

The 4 shows a consumer module 5 in the case of decreased consumers 3 so that the assembly area 7 and the fluid channel openings provided there 8th are visible.

On one side surface of the support block 6 open up consumer channels 12 from that of the valves 3a are controlled so that connected consumers, for example fluid-operated drives, can be supplied with an actuating fluid. The actuating fluid is, in particular, compressed air.

In addition to any number of consumer modules 5 contains the control unit 1 further device modules 13 , which can at least partially also be consumer modules - for example, also of an electrical type - and among which in the exemplary embodiment there is an electronic control module 14 located. The entire arrangement is expediently provided by end modules 15 limited. The entire arrangement is held together by mechanical connecting means, not shown, for example fasteners effective between the individual modules or tie rods penetrating the entire module arrangement.

The control unit 1 is with an electrical connection device 16 equipped to transmit serial electrical signals between the control module 14 and the individual electrical consumers 3 serves. The connection device 16 contains one in a chaining direction indicated by a double arrow 17 extending modular electrical daisy chain 18 that are several in the chaining direction 17 successive and electrically detachable interlinking modules on the sides facing each other 22 contains.

The chaining direction 17 runs parallel to the row direction 2 , where the concatenation strand 18 next to the modules 5 . 13 . 14 runs or is, at least partially, integrated into this.

Through the chain link 18 becomes a serial electrical connection between the control module 14 and the individual electrical consumers 3 created. The control module 14 is able to output serial signals over the daisy chain 18 all electrical consumers 3 or to those in the consumer modules 5 summarized consumer groups are sent to consumers 3 or consumer modules 5 electronic evaluation means 23 are assigned, which can read out the incoming signals correctly according to the addressing in order to feed them to the addressed consumer in order to cause a specific action.

In the same way, consumers can 3 incoming sensor or diagnostic signals via the daisy chain 18 to the electronic control module 14 be returned.

The control module 14 contains electrical connection means 24 that enable coupling to a bus, which can be a serial or parallel data bus. The control module 14 can be connected to a higher-level electronic control and / or networked with other control units.

The electronic evaluation tools 23 are at least partially part of a circuit board in the embodiment 25 , with several electrical consumers in the exemplary embodiment 3 a common board 25 is assigned via an indicated electrical connection device 26 ' with the assigned consumers 3 is connectable. In the exemplary embodiment, each consumer module 5 such a board 25 for the electrical consumers contained in the relevant module 3 assigned.

Via the electrical chain link 18 the individual electrical energy required for operation can also be supplied to the individual consumers.

The chaining modules 22 each have an areal extension and preferably have a flat shape. In the mutually contacted state, they extend in a common link level 26 ,

Any chaining module 22 has at its opposite to each other in the chaining direction 17 facing end portions first and second contact areas 27 . 28 on which the interlinking modules 5 in the chaining direction 17 are pluggable to several over all interlinking modules 22 extending and independent through electrical connection strands 32 - indicated by dash-dotted lines in the drawing - to be preserved. Every connecting strand 32 stands with the electronic control module 14 in connection and is on the other hand with all electrical evaluation means 23 contacted. A top view of the link level 26 have seen the electrical connection strands 32 preferably a linear course, wherein they are parallel to each other and transverse to the direction of chaining 17 lie side by side.

Any chaining module 22 also has a third contacting area 29 , which is common to all interlinking modules 22 on the same side of the concatenation level 26 lies and at the same time with reference to the direction of chaining 17 between the first and second contacting areas 27 . 28 of the assigned chaining module 22 lies.

In the first contact area 27 has each chaining module 22 over several first contact means 33 , which are arranged in a row that is transverse and in particular perpendicular to the direction of chaining 17 and at the same time parallel to the concatenation level 26 runs. The parallelism to the chaining level includes an immediate course in the chaining level.

A parallel row of second electrical contact means 34 which are in the same way as the aforementioned series of first contact means 33 is located in the second contact area 28 of a respective chaining module 22 ,

Any chaining module 22 contains a plurality of one-piece interlinking contacts 36 that are elongated in shape and in the direction of chaining 17 are aligned. They lie across the chaining direction 17 side by side and extend in a common plane that goes to the concatenation plane 26 is parallel. The chaining contacts 36 are identical to each other.

The first and second contact means 33 . 34 are directly at the interlinking contacts 36 intended. Any daisy chain contact 36 is one end with a first contact means 33 and elsewhere with a second contact means 34 Mistake. The first and second contact means 33 . 34 immediately from the end sections 37 the one-piece interlinking contacts 36 educated. Through a respective chaining contact 36 are therefore the first and second contact means 33 . 34 electrically connected in pairs, the first and second contact means 33 . 34 of a chaining contact 36 each other in the chaining direction 17 are opposite.

The first and second contact means 33 . 34 are complementary to each other, which is to say that they are suitable for establishing a mutual electrical connection. The chaining modules 22 can be put together as already mentioned, the first contact means 33 each of a concatenation module 22 with the second contact means 34 of the subsequent concatenation module can be contacted, the corresponding zones as plug-in zones 38 are designated because the contacting in the exemplary embodiment by plugging together the adjacent interlinking modules 22 is caused.

In the third contacting area already mentioned 29 are third means of contact 35 provided, which in turn directly on the daisy chain contacts 36 are provided. They are from the chain contacts 36 trained third contact areas 44 formed in the normal direction indicated by a double arrow 45 the concatenation level 26 are oriented and from the chaining level 26 face away. The normal direction of the third contact surface 44 thus coincides with the normal direction 45 the concatenation level 26 together.

When the arrangement is installed, there is a third contact surface 44 in electrical contact with a consumer-side mating contact surface which acts on them 46 , In the embodiment is on each board 25 one of the number of third contact areas 44 corresponding number of mating contact surfaces 46 , which are arranged in a row next to each other and which according to arrow 49 on a third contact surface 44 press when the board 25 in to the concatenation level 26 parallel alignment in the area of the third contact means 35 to the side of the associated interlinking module 22 is scheduled.

A secure connection between the mating contact surfaces 46 and the third contact areas 44 is ensured that the third contact surfaces 44 in the normal direction 45 the concatenation level 26 are resilient and with the circuit board installed 25 through the mating contact surfaces adjacent to them 46 in the normal direction 45 are deflected so that a resilient restoring force builds up with the respective third contact surface 44 firmly against the assigned mating contact surface 46 is pressed.

The elongated chain contacts 36 are preferably designed as stamped and bent parts and consist of an electrically conductive material, in particular of bronze. The chaining contacts are in the desired mutual assignment 36 by a plate-like carrier element, preferably made of plastic material 47 held with each chaining module 22 is equipped with the chaining contacts 36 is equipped. How out 6 and 7 shows clearly, the plate-like carrier element 47 over a plurality parallel to one another and in the chaining direction 17 running grooves 48 into which the daisy chain contacts 36 are used. The recording grooves 48 are located on that side surface of the carrier element 47 , on which also the third contact surfaces 44 are provided.

With the chaining contacts 36 it is preferably a spring clip, the two in the chaining direction 17 on both sides of the third contact means 44 lying first and second contact arms 52 . 53 have on which the first and second contact means 33 . 34 are provided and between which a bump-like length section 54 of the respective chaining contact 36 lies, whose convexly curved surface is the third contact surface 44 forms.

Every receiving groove 48 is at the level of the bump-like length 54 with a bump-like elevation 55 formed the the hump-like length 54 can spread.

The first contact arm 52 of a respective chaining contact 36 reaches through the carrier element 47 through that with a corresponding opening 56 is provided. In this way, the first and second contact means are located 33 . 34 , related to the concatenation level 26 , on opposite sides of the carrier element 47 ,

The the support element 47 penetrating first contact arm 52 of the breakthrough 56 in the chaining direction 17 delimiting marginal areas 57a . 57b of the carrier element 47 from opposite sides in the normal direction 45 supported and is thereby in the carrier element 47 fixed. The two border areas 57a . 57b form two support points for the first contact arm 52 and form a bending moment for the protruding end area of the first contact arm 52 , This end area is not connected to another chaining module 22 assembled state on the the carrier element 27 facing back exposed by the support member 47 there a groove-like depression 58 having. This has the consequence that the first contact means 33 forming end section 37 of the first contact arm 52 in the normal direction 45 the concatenation level 26 relative to the support element 47 can be deflected spring-elastically. A first contact surface is located at this end section 42 that are opposite to the third contact area 44 is oriented.

The second contact arm 53 becomes the second contact means in the area of its 34 forming end section 37 to the support element 47 lightly pressed and supported by this. At this end section 37 there is one to the second contact means 34 belonging second contact surface 43 , opposite to the first contact surface 42 and rectified with the third contact surface 44 is oriented.

The chaining contacts 36 are due to the mentioned storage on both sides of the third contact means 35 in the normal direction 45 supported. This is a three-point support, on the one hand through the two edge areas 57a . 57b the breakthrough 56 and on the other hand through the support of the second contact means 34 on the support element 47 , This latter third bearing point is designed so that the chain contact 36 at the same time in the chaining direction 17 with respect to the support element 47 is fixed.

Become two consecutive chaining modules 22 with the mutually facing first and second contacting areas 27 . 28 put together, reach under the end sections 37 the chaining contacts 36 , wherein the mutually facing first and second contact surfaces 42 . 43 reach under each other so that they come to rest on each other. In this process, the first contact arm 52 from the second contact arm 53 towards the groove-like depression 58 pivoted, whereby due to the spring elasticity a restoring force builds up, which ensures that the first contact surface 42 firmly against the second contact surfaces 43 is biased.

During the subsequent installation of the board 25 presses this with the mating contact surfaces 46 to the third contact areas 47 , so that the latter, at the same time bending the previously bulging chain contact 36 , towards the hump-like elevation 55 is deformed, the restoring force building up here also ensuring that the third contact surfaces 44 firmly against the mating contact surfaces 46 press down.

This results in several continuous electrical connection strands 32 , each over the mating contact surfaces 46 be tapped. The carrier element 47 besides fixing the interlinking contacts 36 also the function of an electrical insulator.

At least one end of the chain link 18 can use the end sections there 37 the chaining contacts 36 instead of using a daisy chain contact 36 of a subsequent chaining module 22 , can also be contacted directly on contact surfaces of a printed circuit board. This occurs in particular in the connection area to the electronic control module, which is not shown in the drawing 14 where the signals are fed. This allows the signals and the supply voltage to be cost-effectively integrated into the chain tung strand 18 initiate.

Due to the design of the chain contacts 36 and the carrier element 47 there is the further advantage that in the case of electrical contacting, only compressive forces at the bearing points in the carrier element 47 be initiated. This enables a material-saving design.

Due to the double support of the first contact arm 52 at the two edge areas 57a . 57b , mutual influence of the resilient areas is largely excluded.

The third means of contact 35 are expediently in one of the rows of the first and second contact means 33 . 34 parallel row arranged. However, the position of the third contact means 35 may also vary in the direction of chaining, if due to a special design of the board 25 special requirements regarding the arrangement of the mating contact surfaces 46 are to be fulfilled.

How out 7 emerges well, in addition to between the opposite end sections 37 one-piece continuous chain contacts 36 at least one broken chain contact 62 be provided. The arrangement is then made in such a way that the resulting two contact parts 62a . 62b across the chaining direction 17 lying next to each other and comparable to the uninterrupted chain contacts 36 are aligned, the first contact part 62a the first contact means 33 and the second contact part 62b the second contact means 34 forms. In the third contact area 29 the two contact parts overlap 62a . 62b a bit in the chaining direction 17 without touching. Every contact part is in this overlap area 62a . 62b with third contact areas 44 provided that correspond to those of the one-piece interlinking contacts 36 are trained.

This results in the interrupted connection contacts 62 a continuous electrical connection only through the mediation of both contact parts at the same time 62a . 62b contacting consumer by means of corresponding counter-contact surfaces 46 , Such a circuit is considered useful in particular for certain diagnostic purposes.

So that the broken chain contacts 62 insert into the linear chaining concept is at least one of the contact parts 62b on the end section forming a contact means, in particular by widening, in such a way that the first and second contact means 33 . 34 as with the one-piece interlinking contacts 36 , on one in the chaining direction 17 running line.

Each interlinking module is for protective housing 22 expediently in a housing 63 accommodated. The housing 63 is expediently detachable with the support block 6 connected. It can have raised walls 64 have so that it is also the electronic evaluation means 23 can record.

The chaining module 22 is particularly by locking in the associated housing 63 fixed. On the two in the chaining direction 17 oriented sides, the housing has a cross slot 65 through which the in the housing 63 housed interlinking module 22 with its first and second contact areas 27 . 28 can protrude. The height of the cross slot 65 is chosen so that when you plug the chain modules together 22 equipped housing 63 the mutually facing first and second contact areas 27 . 28 of the adjacent chaining module 22 can also reach through.

For mounting in the housing 63 becomes the concatenation module 22 through one of the cross slots 65 through into the housing 63 inserted until it is in the housing 63 locked and thereby in the chaining direction 17 is immovably fixed. In the exemplary embodiment, the carrier element is for this purpose 47 on its two long sides, each with a spring-elastic snap hook 66 provided, which is a housing-fixed stop part 67 can reach behind.

The snap connection thus realized results in a very easy-to-assemble fixation of the interlinking modules 22 in the housing 63 ,

Claims (20)

Electrical connection device for transmitting serial signals to and / or from electrical consumers arranged in a row ( 3 ), especially electrically operated valves ( 3a ), with a modular electrical interlinking strand extending in one interlinking direction ( 18 ), which is several in the chaining direction ( 17 ) successive and to produce several continuous electrical connection strands ( 32 ) on the mutually facing sides electrically interlinkable interlinking modules ( 22 ), each of which has an areal extent and in a common concatenation level ( 26 ) are aligned, with each interlinking module ( 22 ) at its opposite in the chaining direction ( 17 ) oriented end sections first and second contacting areas ( 27 . 28 ), in each of which one parallel to the concatenation level ( 26 ) transverse to the direction of interlinking ( 17 ) running series of mutually complementary first or second contact means ( 33 . 34 ) is provided, of which the first and second contact means that are opposite each other in the interlinking direction ( 33 . 34 ) are connected to each other in pairs and the chaining modules ( 22 ) on one side of the concatenation level ( 26 ) a third contacting area ( 29 ) with the in pairs connected first and second contact means ( 33 . 34 ) connected and for contacting a consumer ( 3 ) provided third contact means ( 35 ), characterized in that the first and second contact means ( 33 . 34 ) from the end sections ( 37 ) between the first and second contacting areas ( 27 . 28 ) extending one-piece interlinking contacts ( 36 ) are formed and that the third contacting area ( 29 ) in the chaining direction ( 17 ) between the first and second contacting area ( 27 . 28 ), the third contact means ( 35 ) from in the normal direction ( 45 ) from the concatenation level ( 26 ) groundbreaking contact areas ( 44 ) of the chaining contacts ( 36 ) are formed, which are acted upon by a consumer-side counter-contact surface ( 46 ) in the normal direction ( 45 ) the concatenation level ( 26 ) are resilient. Connection device according to claim 1, characterized in that the interlinking contacts ( 36 ), in the normal direction ( 45 ) in the concatenation level ( 26 ) seen, have a linear course. Connection device according to claim 1 or 2, characterized in that the third contact means ( 35 ) in one of the first and second contact means ( 33 . 34 ) parallel row are arranged. Connection device according to one of claims 1 to 3, characterized in that in addition to the one-piece interlinking contacts ( 36 ) at least one broken chain contact ( 62 ) is provided, the two contact parts ( 62a . 62b ) one of the first and second contact means ( 33 . 34 ) and each additionally have a spring-elastic third contact means ( 35 ) form. Connection device according to one of claims 1 to 4, characterized in that the to the first and second contact means ( 33 . 34 ) forming end sections ( 37 ) of the chaining contacts ( 36 ) provided contact surfaces ( 42 . 43 ) opposite to each other in the normal direction ( 45 ) the concatenation level ( 26 ) are oriented, the first and second contact means ( 33 . 34 ) successive chaining modules ( 22 ) with facing contact surfaces ( 42 . 43 ) in the chaining direction ( 17 ) reach under. Connection device according to claim 5, characterized in that the first contact means ( 33 ) forming end sections ( 37 ) in the normal direction ( 45 ) the concatenation level ( 26 ) can be deflected resiliently, in such a way that they are pretensioned on the second contact means engaging under them ( 34 ) of the subsequent chaining module ( 22 ) can apply. Connection device according to one of claims 1 to 6, characterized in that the interlinking contacts ( 36 ) are formed by spring clips. Connection device according to claim 7, characterized in that the third contact means ( 35 ) contact surfaces ( 44 ) of bump-like lengths of the interlinking contacts ( 36 ) are formed. Connection device according to claim 7 or 8, characterized in that the interlinking contacts ( 36 ) on both sides of the third contact means ( 35 ) in the normal direction ( 45 ) are supported, the third contact means ( 35 ) with regard to the support points in the normal direction ( 45 ) can be deflected resiliently. Connection device according to one of claims 1 to 9, characterized in that the interlinking modules ( 22 ) the chaining contacts ( 36 ) load-bearing plate-like support element ( 47 ) exhibit. Connection device according to claim 10, characterized in that the interlinking contacts ( 36 ) in grooves ( 48 ) of the support element ( 47 ) are fixed. Connection device according to claim 10 or 11, characterized in that the interlinking contacts ( 36 ) are designed as spring clips and two in the chaining direction ( 17 ) on both sides of the third contact means ( 35 ) lying contact arms ( 52 . 53 ) on which the first and second contact means ( 33 . 34 ) are provided and each on the carrier element ( 47 ) in the normal direction ( 45 ) the concatenation level ( 26 ) are supported. Connection device according to one of claims 10 to 12, characterized in that the interlinking contacts ( 36 ) are designed as spring clips and two in the chaining direction ( 17 ) on both sides of the third contact means ( 35 ) lying contact arms ( 52 . 53 ) on which the first and second contact means ( 33 . 34 ) are arranged, one of the contact arms ( 52 ) through the support element ( 47 ) reaches through, so that the first and second contact means ( 33 . 34 ) on opposite sides of the carrier element ( 47 ) are located. Connection device according to claim 13, characterized in that the carrier element ( 47 ) penetrating contact arm ( 52 ) of those in the chaining direction ( 17 ) spaced edge areas ( 57a . 57b ) of the corresponding opening ( 56 ) is supported from opposite sides. Connection device according to one of claims 1 to 14, characterized in that each the concatenation module ( 22 ) a housing ( 63 ) is assigned in which it can be locked in place. Connection device according to claim 15, characterized in that the housing ( 63 ) on the two in the chaining direction ( 17 ) sides each have a penetration of the first and second contacting areas ( 27 . 28 ) of the interlinking modules ( 22 ) permitting transverse slot ( 65 ) having. Connection device according to claim 15 or 16, characterized in that the interlinking modules ( 22 ) the chaining contacts ( 36 ) load-bearing plate-like support element ( 47 ) on which the housing ( 63 ) detachable snap hooks ( 66 ) are provided. Connection device according to one of claims 1 to 17, characterized in that the interlinking contacts ( 36 ) are designed as stamped and bent parts. Connection device according to one of claims 1 to 18, characterized in that for contacting at least one consumer ( 3 ) one with the consumer ( 3 ) contacted or contactable board ( 25 ) is provided, which in to the concatenation level ( 26 ) parallel alignment in the area of the third contact means ( 35 ) to the side of the assigned chaining module ( 22 ) can be attached, whereby on the board ( 25 ) arranged counter contact surfaces ( 46 ) on the contact surfaces ( 44 ) the third contact means ( 35 ) and deflect it against a resilient restoring force. Electrofluidic control unit with at least one electronic control module ( 14 ) and with several electrically operated valves ( 3a ) as a consumer ( 3 ), whereby for the electrical interlinking between the control module ( 14 ) and the valve ( 3a ) a connection device ( 16 ) is provided according to one of the preceding claims.