DE3624714A1 - SOLDER-FREE ELECTRICAL CONNECTING DEVICE - Google Patents

Description

The invention relates to measures and devices for Her position of electrical connections between electrical Circuit components. In particular, the invention relates an improvement in solder joint-free electrical connection devices for the production of an electrical Contact between a flexible electrical circuit and other circuit parts, the main idea is a relative movement between the above Generate units to remove dirt or foreign objects, in particular to remove other corrosion deposits, which prevent the formation of the could adversely affect electrical contact.

Conventional methods of connecting electrical or elec tronic circuit components see the use separately other connector structures and / or solder connections to the Circuit components for connection to conductors, which Lead current to or from the circuit components lead away. Admittedly, connection technologies for electrical Circuit components via separate connector structures in useful in many cases, but there are certain consequences parts and defects, namely high manufacturing costs  and production costs as well as increased workload and Expenses during the installation and manufacture of the ver binding. In addition, solder connections are sometimes undesirable because the substrate, which has an exposed connection point, relatively high temperatures without adverse effects must withstand. In addition, solder connections can be time consuming be and therefore result in labor-intensive or wage-intensive Constructions. Another problem with solder connections is in difficulty for repair and assembly purposes to cut a solder joint again.

In certain applications it has proven to be useful issued instead of separate connector structures and / or Other connection techniques for manufacturing the connection of flexible circuits and other circuit insert parts. In these cases, the required electrical contact are generated in that connection range the circuit against connection points on a connector, a device or another circuit unit mechanically be pressed. Such known pressure connector con Structures generally use to create pressure a resilient solid element, for example an elastomer component that is compressed, and at least one preload the parts, making the electrical contact too to produce the other part, so that the connection areas be kept in electrical contact. Such solder lenfrei connection systems are in the US patent 44 68 074.

The US patent 44 68 074 shows a device at the contact areas of a first row of conductive elements against aligned contacts of a second row of conductors capable elements by a pressure generating element are pressed, the resilient open-pore plastic material contains, so that an electrical contact between the conductive capable elements is manufactured and maintained.  

The use of such an open-pore resilient mate rials allows a construction with a plurality in ge ring spaced apart, exposed elec tric conductors that are on a pair of substrates find or stand away from the substrates and the one another aligned and then pressed reliably against each other can be. The electrical contact is by action a contact pressure imparted to the substrates takes hold. The solderless electrical connection device device according to US Pat. No. 4,468,074 can be mutually connection of flexible circuits, for connection of flexible circuits Circuits with circuits on rigid substrates, for ver bond between conductors made by integrated circuits in a circuit pattern on a flexible or rigid Guide circuit board away and turned on in other cases be set.

In a generally known manner in conventional electri connecting devices, such as plug and socket connections bonds, a relative mutual sliding movement during the establishment of the connection provided. This relative movement between the cooperating sockets and plugs very desirable as it causes debris or foreign body wiped or pushed off the connector parts will. Such foreign bodies and dirt can Bil adversely affect the electrical contact. To Achieving the intended effect is the solder joints free electrical connection device according to the US patent Scripture 44 68 074 appropriate, but results from the Her position of the connection between flexible circuits and other circuit units that connect together are not necessarily the desired relative movement between the contacting parts. This is because that the circuit units, in the known connection technology are interconnected by the fact that an unit is moved down and onto the other unit  is set so that a lateral movement is excluded, which lead to the removal of unwanted foreign objects would. As a result, dirt, foreign matter and burrs or Ma material residues still to connect to each other the electrical contact parts after establishing the connection available, which results in unreliable contacts.

Another problem area with solderless connections devices according to US Pat. No. 4,468,074 with no wiping contact movement is that open Aging surfaces of the circuit before assembling. During the Exposure of the contact areas go beyond normal Ge hold on corrosive gases, as they are generally in the Air can cause corrosion of metal surfaces take place, reducing the electrical properties of the arrangement suffer after assembly. As previously mentioned, there is an egg ne characteristic measure to improve contacts properties in that a sliding movement between the contact elements is provided when merging. This gliding movement breaks through the non-conductive corrosion layers, wel che may have formed and thus leads to a Ver improvement of the electrical properties of the connecting con structure.

The invention is intended to achieve the object that electrical contact properties of solderless elec trical connecting devices compared to the conditions to improve on known constructions.

According to the invention, this object is achieved by the Features specified claim 1 solved.

In this case there is an electrical connection free of solder joints tion device specified which has an electrical contact between a flexible circuit and another circuit unit produces, with a relative movement between these  Units are provided to remove burrs, foreign objects or others disruptive particles present on the connection areas can be wiped off and thus adverse influences to avoid electrical contact.

According to a first embodiment of the electrical connection device becomes a relative movement between the respective Circuit units through plug-like and socket-like housings reached parts that contain a guide surface arrangement. This baffle arrangement is effective in that it Foreign bodies or burrs and interfering particles wiped off can be separated from the respective connection areas or before can be there. Serve according to another embodiment mechanical springs to achieve a sideways movement of the circuit units, which in turn causes dirt particles, dust and burrs are pushed off or wiped off.

Means for performing a pre-cleaning are preferred operation, namely a cleaning tab or a cleaning ledge provided for the final removal of foreign objects or disruptive coverings.

The connection technology specified here is described below of exemplary embodiments with reference to the drawing explained, corresponding parts each with the same chem reference numerals are provided. In detail:

Fig. 1 A drawn in the sectional side view of an electric lötstellenfreien Verbindungsvor direction of conventional type,

Fig. 2 is a perspective view of a solder-free electrical connection device of the type specified here,

Fig. 3 is a side view of the cutting lötstellenfreien electrical connecting device of FIG. 2 after the connection,

Fig. 4 is a foreshortened Expositionsdar position of another embodiment of a solder-free electrical connection provide apparatus of the kind given herein,

Figure 5 is a partially sectional side view drawn in. The connecting device according to Fig. 4,

Fig. 6 is a perspective, partially broken view of another embodiment Darge set of given here connecting device,

Fig. 7 shows a drawn in sectional side view of the binding device according Ver Fig. 6 prior to connection,

Fig. 8 is a drawn in sectional side view of the binding device according Ver Fig. 6 after the connection,

Fig. 9 is a drawn in sectional side view of yet another embodiment,

Fig. 10 is a sectional side view of an embodiment with a pre-cleaning protrusion according to a further development of the present design concept and

Fig. 11 is a sectional side view of a second imple mentation form with means for pre-cleaning before final manufacture of the electrical con tact.

Reference is first made to FIG. 1. Here is a soldering lenlen connecting device known type generally designated 10 . The connecting device 10 contains a clamping frame 12 , in which a flexible circuit 14 can be clamped, which has a substrate 16 , a conductor pattern 18 applied thereon and a protective film 20 thereon, which covers the conductor pattern layer 18 . This flexible circuit is clamped against a further flexible circuit 22 , which in a similar manner contains a substrate layer 24 , a conductor pattern layer 26 thereon and a protective cover film 28 on the conductor pattern layer 26 . The tenter frame 12 covers a reliable electrical contact between the two flexible circuits 14 and 22 due to the pressure exerted by an elastomeric intermediate layer 29 . The tensioning frame 12 thus covers the maintenance of a certain minimum contact force between the exposed connection areas 30 and 32 of the conductor pattern layers 18 and 26 via the intermediate layer 29 made of elastomer, so that an effective electrical contact between the contact areas is generated. Preferably, at least one alignment pin is provided, which is indicated at 34 and which serves to produce a perfect alignment between the conductor pattern layers 18 and 26 or their contact areas on the respective flexible circuits 14 and 22 .

Although the lötstellenfreie electrical connecting device 1 is shown in FIG., In general, appropriately, but no relative movement is provided between the two flexible circuits to see if the exposed terminal portions 30 and 32 are brought together to form the electrical contact. As already stated above, the lack of the relative sliding movement or the wiping movement causes a number of disadvantages. For example, dirt particles or other foreign bodies can be present on the connection areas of the contact parts, which also remain there when the electrical connection has already been made, so that the reliability of the contact is adversely affected. Corrosion films that have formed on the respective connection areas 30 and 32 can remain on these surfaces even after the electrical connection has been made, which in turn leads to disadvantages in terms of the reliability of the electrical connection.

The previously discussed disadvantages of soldering-free connection devices of the type shown in FIG. 1 are eliminated or their effectiveness is reduced by providing a disconnection-free connection technology for flexible circuits of the type specified here. Reference is now made to FIGS. 2 and 3, in which a first embodiment of a solderless connection device of the present type is generally designated 10 . The connecting device 10 ent holds a socket housing 12 , which is designed such that it is able to accommodate a plug part 14 , which is introduced via guide surfaces 16 and 18 provided on the socket housing 12 . The plug part 14 contains a flexible circuit 20 , which has electrical conductors 21 which lead on the flexible circuit to connection areas 23 and a resilient padding 22 made of an elastomer. The flexible circuit 20 is to the plug part 14, the elastic pad 22 and wrapped in the manner shown in FIGS. 2 and 3 way. It should be noted that the plug part 14 is made of a rigid material, for example a suitable plastic. The flexible circuit 20 is fixed to the plug part 14 by means of a slot 24 and / or by a suitable adhesive. The plug part 14 also contains a front guide surface 26 , which extends on the top 28 of the plug part, and a shoulder 30 on the underside 32 of the plug part. Furthermore, the top 28 of the plug part 14 is provided with a downward-facing shoulder or latching shoulder 29 .

The socket housing 12 contains a rigid base 34 and side walls 36 , which protrude from the base and are provided with inward white send flanges 38 , the side walls forming the guide surfaces 16 and 18 . The base 34 of the socket housing 12 accommodates the flexible circuit 40 on which electrical conductors 42 run to connection areas 44 . The flanges 38 pointing downward are each provided with an inclined surface 46 which interacts with an inclined surface 26 of the plug part 14 . The inclined surfaces 46 end in a recess 48 which corresponds to the catch 29 on the plug part 14 . Finally, strokes 50 are also provided on the socket housing 12 .

In use, the plug part 14 is inserted into the socket housing 12 following the guide surfaces 16 and 18 . Here, the inclined surfaces 26 on the inclined surfaces 46 and cause ken actuation of a backdrop through which a pressure is exerted on the elastomeric intermediate layer 22 and an electrical contact between the connection areas 44 of the flexible circuit device 40 and the connection areas 23 of the flexible circuit 20 is produced . At a certain point, the strokes 50 of the socket housing 12 come into contact with the blocks 30 from the connector part 14 , so that a further insertion of the connector part 14 is prevented. At the same time, the recesses or catches 29 and 48 snap onto one another and block a further relative movement between the flexible circuits 20 and 40 .

It can be seen that during the insertion of the plug part 14 into the socket housing 12 and the resulting Kulissenbe actuation of the plug part, the connection regions 23 and 44 perform a displacement movement relative to one another. This relative movement has the effect that dust, dirt, Be coverings or other foreign bodies are wiped off and thereby a reliable electrical contact is made.

It can be seen that although in the embodiment according to FIGS. 2 and 3 the resilient layer 22 made of elastomer is shown arranged on the plug part 14 , however, an elastomer layer can also be arranged on the socket housing 12 or both on the socket housing 12 and on Plug part 14 can each be provided resilient elastomer layers. It should also be noted that although in the illustrated embodiment the socket housing 12 serves to accommodate a second flexible circuit, this part of the connecting device can also accommodate a rigid printed circuit board or a discrete electronic component.

In Figs. 4 and 5, another embodiment of an electrical connection device of the type specified here is shown. This is designed so that electrical connections to both sides of a printed wiring board or scarf device carrier plate can be made. The solderless connection device is generally designated 52 and contains a housing and cutter construction, which is preferably mechanically locked, as shown in FIG. 4. In the embodiment according to FIGS. 4 and 5, the housing is provided with an opening 54 which has extension with a chamber 55 Verbin. In addition, the housing has a pair of cam surfaces similar to the inclined surfaces 46 of the socket housing 12 according to FIG. 2. A pair of flexible circuits 56 and 56 'is placed around an upper or lower rigid strip 58 or 58 ' of the housing, so that Connection areas 57 and 57 'are formed, which are each in front of suitable resilient material layers made of elastomer, which in the drawing are 60 and 60 ' be distinguished. The rigid strips or moldings 58 and 58 'are provided with inclined surfaces 62 and 62 ', which correspond to the inclined surfaces 46 of the embodiment according to FIG. 2. The housing 55 is provided with opposing guide surfaces 66 and 66 ', which serve to receive and align the rigid printed circuit board 68 and in addition the locking hooks 64 and 64 ' are provided to hold the ge printed circuit board 68 after insertion. The printed circuit board 68 , on which the conductor arrangements 70 and 70 'are located, is chamfered at its front edge, as shown at 72 . It can be seen that the bevelled edges 72 of the circuit carrier plate 68 correspond in a certain manner to the front edge of the plug part 14 according to FIG. 2. So if the printed circuit board between rule's guide surfaces 66 and 66 'is inserted, the beveled edges 72 of the circuit board face the inclined or inclined surfaces 62 and 62 ' of the housing 54 , whereupon the resilient elastomer layers 60 and 60 'are deformed and a Pressure is exerted against the respective electrical connection areas, so that an effective electrical shear contact between the connections 57 and 57 'and 70 and 70 ' is generated. The printed circuit board 68 is therefore first inserted into the front housing 55 and then into the rear housing 54 until the latching hooks 64 and 64 'snap into undercuts 65 of the circuit board 68 .

It should be noted that during the use of the rigid scarf device carrier plate 68 in the housing part 54, a guide link effect between the chamfered edges 72 and the inclined surfaces 62 and 62 'comes about. As a result, a relative movement occurs between the respective electrical connection areas, which is effective in such a way that disruptive dirt parts, deposits or other foreign bodies are wiped off, so that a reliable electrical connection is established.

In summary, the Fig. 4 and 5 determined who the that an end-side housing portion 55 and a rear housing part 54 as by Einrastung assembled Weden that opposing flexible circuit carrier webs are each weils clamped resting on elastomeric elastic intermediate bearings and form a wedge-shaped gap, in one on both sides circuit pattern carrying rigid circuit board can be inserted up to a stop, so that a contact between the conductor patterns of the rigid circuit carrier plate on the one hand and the opposing flexible circuits on the other hand is produced by executing a sliding movement between the contacting parts and the contact-receiving parts are subjected to a permanent contact pressure due to the compression of the elastomeric intermediate layers.

Reference is now made to FIGS. 6 and 7 of the drawing. Here, another embodiment is shown, in which a sliding function or wiping function is realized within a solderless electrical connection device. Two rigid printed circuit board 74 and 76 are oriented at right angles to each other and are connected by a solderless electrical connector, which is generally designated 78 . The solderless electrical connector 78 includes a pair of rigid connector parts 80 and 82 which are coupled together by a pair of leaf springs 84 and 86 . A flexible connecting portion or jumper 88 is used for the electrical connection between the rigid connector parts 80 and 82 , while guide pins 89 establish a mechanical connection between the rigid connector parts. Each of the rigid connector parts 80 and 82 has a structure which corresponds in a certain way to the structure of the plug part 14 according to FIG. 2, wherein a rigid, generally made of plastic body is provided, which is provided with an elastomer pad 90 , the flexible circuit section 88 is placed around the elastomeric pad 90 and the rigid connector part so that the contact-receiving parts on the respective circuit carrier plates 74 and 76 face the contact-receiving parts on the flexible jumper. Thus, when the circuit carrier plates 74 and 76 are attached to the respective rigid connector parts 80 and 82 , the elastically resilient elastomer layer exerts contact pressure and brings about reliable electrical contact between the contact areas of the jumper 88 and the contact areas of the circuit carrier plates 74 and 76 . As can be seen from Fig. 6, the guide pins 89 can be bent 90 ° and be seen at the end with a thread 92 ver, so that a nut 94 can be screwed on and the circuit board 74 can be fixed to the connector part 80 .

When using the solderless electrical connection device 78 is, as indicated in Fig. 7, the rigid connector part 80 in the direction of arrow 91 down ge, so that the leaf springs 84 and 86 are claimed and deformed ver. This results in the lower rigid connector part 82 being moved in the lateral direction, as is made clear by part 93 , so that the cooperating contact areas on the flexible circuit section or jumper 88 and the rigid circuit board 76 to which the connection is made a relative sideways movement. So acts on the rigid connector part 80 from a downward force, the leaf springs 84 and 86 produce a sliding movement and a relative movement between the cooperating contact areas of the jumper 88 and the circuit board 76 , whereby dirt, foreign bodies and other disruptive objects from the contact surfaces to be placed against each other be removed. At the same time, the guide pin 89 aligns with associated drilling 98 of the rigid scarf device carrier plate 76 , as can be seen from FIG. 8, where it should be noted that the rigid connector part 82 is located between the guide pins 89 , as can be seen from FIG. 6.

In this phase of use, a cam or other fixing means, for example a nut, can come into effect in order to keep the leaf springs under tension and to prevent further movement within the connection device 78 without soldering joints.

It can be seen that when a force is exerted on the rigid connector part 82, the elastomeric layer 90 exerts an effective contact pressure on the flexible circuit 88 , so that reliable electrical contact between the flexible circuit device or the jumper 88 and the contact areas is achieved. which are located on the circuit board 76 .

Fig. 9 shows yet another embodiment of the connecting device given here, in which the sliding function or wiping function between the electrical contact areas is produced in a different way, as is generally made clear at 104 in FIG. 9. The lötstellenfreie Verbin-making apparatus 104 has similar structure to the Vorrich processing of FIGS. 6-8 and includes a lower connector portion 106 and an upper rigid connector part 108, which are electrically connected by a jumper or a flexible circuit 110 connected to each other. Similar to the connection device 78 , the connection device 104 establishes a connection between two rigid circuit board 112 and 114 , which are each oriented perpendicular to one another. Deviating from the leaf spring arrangement of the embodiment according to FIGS. 6-8, however, a cam-actuated sliding mechanism is provided in the embodiment according to FIG. 9, which is designated by 116 . If the cam 116 is rotated in the direction of the arrow, the lower rigid connector part 106 slides over the rigid circuit board 114 , so that a wiping effect between the contact areas of the flexible circuit 110 and the circuit board 114 is realized. At a certain point of movement, the guide pin 118 engages in bores 120 and 122 of the lower star ren connector part 106 and the circuit carrier plate 114 , so that further movement within the connecting device 104 is prevented. At this stage, the guide pin 9 may be xed fi 118 in its position by a suitable locking mechanism, such as by a in Fig. Interpreted at 124 to lock washer. As shown for the embodiment of FIGS . 6-8, the rigid connector parts 106 and 108 of the embodiment of FIG. 9 also contain elastomeric intermediate layers, with the flexible circuit or jumper 110 being wrapped around it and the guide pin 118 one maintains sufficient contact force against the elastomer layers to ensure reliable electrical contact between the respective connection areas on the jumper 110 and the two rigid circuit board 112 and 114 . It should be noted that although the solderless connection devices 78 and 104 according to FIGS . 6-9 serve to connect two rigid circuit board plates perpendicular to one another, however, these connection devices also connect a flexible circuit to another flexible circuit in the same way , with a rigid circuit board, which is arranged at a certain angle to the first-mentioned circuit or can serve with egg ner electronic circuit unit. The connec tion of two mutually perpendicular rigid scarf device carrier plates is therefore not necessary concern of the construction specified here.

According to an advantageous further development of electrical connection devices of the type specified here, separate wiping means are provided, in particular in the form of pre-cleaning projections which are connected to or connected to the connector parts, so that a preparatory cleaning effect for removing foreign bodies, dust and deposits is achieved becomes. A separate wiping element is shown in Fig. 10 and on a solder joint-free device 10 'in the form of cleaning projections 130 and 132 is provided. The lötstellenfreie connecting apparatus 10 'according to Fig. 10 is substantially the same structure as the lötstellenfreie connecting device 10 of FIG. 2, each but with the exception that at least one cleaning projection is formed on the leading edge of the connector parts, where in the protrusion a prepared skimming of foreign bodies, dirt, grown coverings and in particular foreign bodies of relatively large dimensions. Separate cleaning projections are preferably provided in order to carry out preparatory cleaning of the two contact area sets, which are to be brought into connection with one another. The cleaning protrusions may have any shape, such as the strip-like or cuboid shape of the protrusions 130 and 132 of FIG. 10, wherein it can be seen from the drawing that the front edges, as shown at 134 and 136 , are chamfered.

Another embodiment is shown in FIG. 11, in which preparatory cleaning is carried out by a wiping movement in a connection device free of solder joints. Fig. 11 shows a conventional solderless connec tion device with a clamping frame 133 , which holds a pair of clamping screws or other connecting elements 140 ent and between them a resilient layer 142 made of an elastomer, a flexible circuit 144 with electrical circuit patterns 146 and a rigid circuit board 148th clamped, which is provided with electrical circuit patterns 150 on its surface. A cleaning intermediate layer 152 is introduced between the layers and withdrawn during the connection process, for example during the application of the contact pressure by the elastomer intermediate layer 142 . In this way, a preparatory wiping of the contact areas is carried out in order to remove unwanted foreign bodies or other contact-impairing layers or particles. Suitable actuating means for inserting and withdrawing the cleaning intermediate layer 52 provide for manual actuation or automatic actuation.

Several exemplary embodiments have been soldered above free electrical connection devices described, wel che a relative movement between the respective Kontaktbe Provide in such a way that foreign bodies or deposits be pushed off the contact-forming surfaces. The contact surfaces that move against each other are special another advantage in those applications where Computer circuits are to be set up for which paper dust an adverse impact on the production of effective elec trical contacts. A sliding shift in the con tact surfaces when making the contact is also very useful  moderately in connection with connection device without soldering points lines of the type described in US Pat. No. 4,468,074. So there will be reliable electrical contacts between flexible circuits and other flexible circuits or between flexible circuits and rigid circuit carriers plates as well as between circuits of a certain type and generated electronic circuit elements.

The material for producing the resilient elastomer intermediate layers, such as components 22 according to FIGS. 2 and 3, 60 and 60 'according to FIGS. 5, 90 according to FIGS. 6, 22 ' according to FIGS. 10 and 142 according to FIG. 11 , is preferably in the form of a tough, elastic, open-cell polymer foam, and more preferably in the form of polyurethane foam. Particularly good results are achieved when using a polyurethane system which contains a polyester / polyether copolymer. An open-pore material which is suitable for the purposes specified here is brought onto the market by the Rogers Corporation under the designation FCD 2200. This material is characterized by a compression deformation force of 25% compression in the range from 0.34 · 10 ⁵ PA to 3.4 · 10 ⁵ PA. Resilient materials for use in the present application should have a compression deformation of less than 5%. The remaining compression deformation is measured in accordance with the provisions of ASTM standard D-1564, whereby a stack of approximately 5 cm square and 2.5 cm thick is compressed to 50% from boards of the material (each 0.025 mm per sheet) to a thickness of 1.25 cm and the compressed material is held at 70 ° C for 22 hours, the compression is then removed and the remaining thickness is measured. The residual compression in the material FCD 2200 after 5 hours of exposure in a steam autoclave before the ASTM measurement according to D-1564 is less than 10%.

Claims (24)

1. Solder-free electrical connection device with means for exerting a pressure on a resilient element from an elastomer to produce a Kontaktdruk kes between connection areas of circuit units, where at least one of these circuit units is a flexible electrical circuit, characterized in that for generating the pressing force guide surfaces are provided on the movable parts of the connecting device relative to one another, which bring about a compression of the resilient intermediate layer or the resilient intermediate layers. 2. Device according to claim 1, characterized in that the connector parts in the manner together or so are designed so that a relative movement of the connection area surface of the circuit units to be connected during the establishment of the electrical connection to the Ab push or wipe foreign objects, coverings or the like is generated. 3. Apparatus according to claim 1 or 2, characterized in that a connector part has the shape of a socket housing ( 12 ) which is provided with an opening, that the other connector part has the shape of a plug part ( 14 ) which in the socket housing ( 12 ) is insertable and that cooperating inclined surfaces or guide slots are provided on the socket housing and on the plug part in order to produce the compression of the elastic intermediate layers. 4. The device according to claim 3, characterized in that on the plug part ( 14 ) an inclined surface ( 26 ) is provided which is located on the front edge of the plug part and that a corresponding inclined surface ( 46 ) at the front end of the socket housing ( 12 ) is provided. 5. Apparatus according to claim 3 or 4, characterized in that cooperating locking elements ( 29 , 48 ) for locking the plug part ( 14 ) and the socket housing ( 12 ) are provided on these parts. 6. Device according to one of claims 3 to 5, characterized in that stop means ( 50 ) are provided to determine a certain limit position when inserting the plug part ( 14 ) into the socket housing ( 12 ). 7. Device according to one of claims 1 to 6, characterized in that a resilient elastomer layer ( 22 ) on one or both of the connector parts to be put together or on the plug part ( 14 ) and / or on the socket housing ( 12 ) for supporting the connection areas is arranged. 8. Device according to one of claims 1 to 7, characterized in that one of the circuit units to be contacted, which has the shape of a flexible electrical circuit ( 20 ), is placed around one of the connector parts or around the plug part ( 14 ). 9. The device according to claim 1 or 2, characterized in that a connector part has the shape of a housing ( 54 ) with an opening which leads into a chamber ( 55 ) which for receiving an inserted through the opening star ren printed circuit ( 68 ) serves that at least one flexible circuit ( 56 ) is inserted into the housing chamber ( 55 ), a resilient elastomer intermediate layer ( 60 ) supporting the flexible circuit with respect to the housing and with guide surfaces for introducing the rigid to be contacted at the housing opening Circuit carrier plate and are arranged on this guide surfaces for compressing the resilient intermediate position. 10. The device according to claim 9, characterized in that the rigid circuit board ( 68 ) connection areas ( 70 , 70 ') on their mutually opposite surfaces and that in the chamber ( 55 ) of the housing ( 54 ) of the Ver binderteiles flexible circuits ( 56 , 56 ') are guided in such a way that they each extend over resilient intermediate layers ( 60 , 60 ') on opposite sides of the housing chamber. 11. The device according to claim 9 or 10, characterized in that a guide surface arrangement inclined surfaces ( 62 ) along the front edges of the housing part forming a connector part, which cooperates with a leading edge of a supplying rigid circuit board. 12. The apparatus of claim 10 or 11, characterized records that with the interposition of resilient material layer flexible circuits over inclined surfaces of a ver Binder part forming housing are placed and that abge slanted front edges of a rigid circuit board compressing the resilient layers of material with the sloping surfaces of the printed circuits or of the housing bevels when inserting the circuit interact carrier plate. 13. The device according to one of claims 9 to 12, characterized in that the connector designed as a housing part has guide surfaces ( 66 ) for aligning and guiding a rigid circuit board to be inserted in the region of the housing opening. 14. Device according to one of claims 9 to 13, characterized by locking means ( 64 , 64 ') for locking an inserted rigid circuit board ( 68 ) in the housing forming a connector part. 15. The apparatus according to claim 1, characterized in that two rigid connector parts ( 80 , 82 ) via a spring arrangement ( 84 , 86 ) with each other mechanically and via a flexible circuit section ( 88 ) are electrically connected to each other and for connecting two rigid or flexible Circuit units ( 74 , 76 ) serve with each other, where in each case elastically flexible intermediate layers made of elastomer are provided between the connector parts and the circuit units to be connected, and furthermore the spring arrangement ( 84 , 86 ) during a pressing movement of the one connector part against the other connecting part between these parts causes a sideways movement, such that connection areas of the connector parts couple with each other, the flexible circuit perform a wiping movement against ent speaking connection areas of an opposite circuit unit. 16. The apparatus according to claim 15, characterized in that the spring arrangement contains at least one leaf spring ( 84 , 86 ). 17. The apparatus of claim 15 or 16, characterized records that the two rigid connector parts one to one have another vertical direction of action. 18. The apparatus according to claim 17, characterized in that on the connector parts each mutually perpendicular rigid circuit board ( 74 , 76 ) are closed. 19. Device according to one of claims 1 to 18, characterized net duch means for aligning and locking the to mating connector parts. 20. The apparatus according to claim 1, characterized in that two rigid connector parts are coupled via a jumper, the connector parts each with flexible or rigid  Circuit carriers are connected and the assembly the connector parts for establishing the electrical connection due to suitable coupling means for a wiping movement between contact areas that are to be joined together. 21. The apparatus according to claim 20, characterized in that the two-dimensional circuit units to be connected are perpendicular to each other. 22. The device according to one of claims 1 to 21, characterized ge indicates that guide and locking means are provided to connect the connector parts to be coupled at Be to move towards each other and in a limit position lock. 23. The device according to any one of claims 1 to previous saying, characterized in that separate lines or Projections are provided which, when the ver binderteile to contact a preparatory cleaning make the contact surface. 24. Device according to one of claims 1 to 22, characterized ge indicates that a pre-independent of the connector parts direction for generating a preparatory wiping motion between the contact areas to be contacted is provided, which can be operated manually or automatically.