DE102011078096A1 - Direct plug-in element for establishing multi-surface direct plug connection at e.g. printed circuit board, of control device of motor vehicle, has direct contacts electrically fastened at cables by connecting devices - Google Patents

Abstract

The element (3) has first and second direct contacts (31, 32) electrically fastened at first and second cables (6, 7) by a first connecting device (41) i.e. crimping device, and a second connecting device (42) i.e. insulation displacement connection, respectively, where the connecting devices are different from each other. A contact carrier (30) comprises a lid (35) that is formed such that the second cable is pushed into the second connecting device to establish an electrical interconnection when closing the lid. An independent claim is also included for an electrical arrangement.

Description

State of the art

The present invention relates to an improved direct plug-in element with different direct contacts and an improved multiple direct contacting of electronic components, such. B. printed circuit boards.

Recently, more direct plug contacts are used in which a direct plug is inserted directly onto a printed circuit board. In a plurality of contact areas on the circuit board, the contact areas are arranged in a row near a circuit board edge. If many contact areas are necessary in this case, results in a corresponding length on the circuit board and a complicated wiring on the circuit board, since thereby the paths between the contact areas and components on the circuit board with the number of contact areas must be increased. To increase the number of contacts, one could provide contact areas on both an upper side and a lower side of the circuit board. Depending on the number of necessary contact areas on the circuit board, however, there are still relatively long rows of contacts. However, it is desirable, in particular for mass products, such as control units for vehicles, in which a large number of the same control units is needed to allow the most economical production of the contact.

Disclosure of the invention

The direct plug-in element according to the invention with the features of claim 1 has the advantage that a plurality of contact areas on a support plate, for. As a circuit board or a punched grid or a substrate arranged in staggered rows and are designed for a direct connection, can be contacted directly by means of the direct plug. In this case, a very simple and economical to produce direct plug contact can be realized, in which the direct plug is designed extremely compact. This is inventively achieved in that the direct plug-in element has a contact carrier with at least a first direct contact and a second direct contact, which are electrically connected via a first and second connection device to a first and second cables, wherein the first and second connection devices are different. As a result, the direct plug-in element has a minimized structural volume, and in addition the direct plug-in element can be equipped very quickly and quickly with the direct contacts in a common assembly direction. Preferably, the direct contacts and the connecting devices are each one-piece components.

The dependent claims show preferred developments of the invention.

According to a preferred embodiment of the invention, the first connecting device is a crimping device and the second connecting device is an insulation displacement connection. In this case, the crimping device is arranged in a first plane and the insulation displacement device is arranged in a second plane, which is in the mated or contacted state of a support plate further than the first plane and is parallel to the first plane. The first direct contact together with the first connecting device claimed by design a long flat space, while the second direct contact together with the second connection device requires a short space. As a result of the combination of the different first and second connecting devices, a space-minimized arrangement of the direct contacts in different planes can thus be achieved, resulting in a significantly reduced length of the direct plug-in element.

Particularly preferably, the contact carrier has a cover. As a result, the insulation displacement connection in the contact carrier between the pre-assembled second direct contact and the non-stripped second cable can be performed manually or mechanically using a tool device with the cover open. Furthermore, a permanent control of the end position of the cable and monitoring of this operation is easily possible, since the exposed contact point is visible. As a result, the assembly process is significantly accelerated and ensures a contact-safe contact. Further, replacement of the second direct contact with a newly manufactured clamp-and-cut connection with the existing cable is easily possible, whereby a repairability is achieved. Preferably by an additionally integrated clamping device, a fixation of the cable can be carried out in the contact carrier in order to achieve a mechanical decoupling and to avoid displacements of the cable position

Further preferably, the cover is arranged such that when closing the lid, the second cable is pressed into the insulation displacement connection to produce an electrical connection. Thus, the use of additional tools can be omitted. In addition, damage to the direct contact during assembly are largely prevented.

Preferably, a seal, in particular a mat seal, on the contact carrier intended. As a result, a permanently reliable protection of the components located inside the housing against environmental influences or contamination is ensured. In particular, this allows an automotive use can be achieved. When fitting the direct plug-in element, only the first direct contact with the first cable and the non-stripped second cable must be passed through the mat seal. As a result, a faster assembly of the direct plug is largely possible without damaging the slats of the mat seal.

According to a preferred embodiment of the invention, the first and second direct contact are arranged in a first contact carrier part and a third and fourth direct contact are arranged in a second contact carrier part. Here, the first and second direct contacts to the third and fourth direct contacts are aligned by 180 ° opposite. Furthermore, the third direct contact is connected to a third cable via a third connecting device and the fourth direct contact is connected to a fourth cable via a fourth connecting device. The third and fourth connection devices are formed differently. Here, the third connection device is preferably identical in construction to the first connection device and the fourth connection device is identical in construction to the second connection device. This results in a large number of identical parts, which enables a cost-efficient and economical production.

Further preferably, the third connection device is a crimping device and the fourth connection device is an insulation displacement connection. Thus, a direct contacting of exposed on both flat sides of a support plate contact areas is possible. By combining the first and second connection devices or the third and fourth connection devices in the first and second contact carrier part, a space-optimized arrangement of the direct contacts can thus be achieved, which results in a significantly reduced length of the direct connection element. Furthermore, it is possible to provide an extremely compact direct plug connection between a plurality of multi-row, juxtaposed direct contacts and a plurality of multi-row, arranged on both flat sides of the circuit board contact areas.

Further preferably, the first and second contact carrier parts are connected by means of a joint. As a result, any tolerances of the carrier plate can be compensated for when inserting the carrier plate between the contact carrier parts. In this case, the joint can alternatively be prestressed via an additionally arranged spring element with respect to the carrier plate, in order to ensure reliable direct contacting in all operating states and applications due to the resulting contact force.

Preferably, the first and second contact carrier parts are alternatively formed as a one-piece component. When inserting the carrier plate in the one-piece component occurring elastic deformations of the contact carrier parts can produce a leverage effect with an increased contact force on the direct plug contacts. As a result, permanently reliable direct contacting can be achieved.

The invention further relates to an electrical arrangement with a direct plug-in element and a carrier plate with at least two exposed contact areas. In each case one of the direct contacts contacts one of the contact regions, which are spaced at different distances from a carrier plate edge.

The invention is preferably used in control devices of vehicles.

drawing

Hereinafter, embodiments of the invention will be described in detail with reference to the accompanying drawings. In the drawing is:

1 a schematic sectional view of an electrical arrangement with a direct plug-in element according to a first embodiment of the invention,

2 a schematic sectional view of an insulation displacement connection between a cable and a direct contact,

3 FIG. 2 a schematic sectional view of an electrical arrangement with a direct plug-in element according to a second exemplary embodiment of the invention with first and second contact carrier parts, FIG.

4 a schematic sectional view of a direct plug-in element according to a third embodiment of the invention, and

5 a schematic sectional view of a direct plug-in element according to a fourth embodiment of the invention.

Preferred embodiments of the invention

The following is with reference to 1 and 2 an electrical arrangement 1 with a direct plug-in element 3 according to a first preferred embodiment of the invention described in detail.

How out 1 can be seen, includes the electrical arrangement 1 a carrier plate 2 which is an integrally formed printed circuit board in this embodiment, and a direct plug-in element 3 , The carrier plate 2 has a first contact area 51 and a second contact area 52 which are exposed on a common first flat side 21 the carrier plate 2 are arranged. The second contact area 52 is in a longitudinal direction L of a support plate edge 20 further spaced apart than the first contact area 51 ,

The direct plug-in element 1 includes a substantially integrally formed contact carrier 30 in which a first channel extending in the longitudinal direction L 301 is formed in a plane E1. Further, one in a plane E2 is parallel to the first channel 301 extending second channel 302 provided in the longitudinal direction L longer than the first channel 301 is formed and a perpendicular to the longitudinal direction L formed end portion 302A having. In the first channel 301 is a first direct contact 31 arranged, which via a first connection device 41 on a first cable 6 is connected and with a contact blade 310 from a first opening 311 of the contact carrier 30 protrudes. The first connection device 41 is designed here as a crimping device.

In the second channel 302 is a second direct contact 32 arranged, which via a second connecting device 42 on a second cable 6 is connected and with a contact blade 320 from a second opening 321 of the contact carrier 30 protrudes. In contrast to the first connection device 41 is the second connection device 42 in this case designed as insulation displacement connection. The contact carrier 30 also has a lid 35 on, in the illustrated open position, the longitudinal end portion 302A of the first channel 302 visibly releases.

The assembly process becomes the first direct contact 31 including the first cable 6 through one on the case 30 arranged mat seal 36 through into the first channel 301 inserted until the contact lamella 310 from the first opening 311 of the housing 30 protrudes. Further, the second cable becomes 7 without a stripping of a cable end section 7A and without attached direct contact through the mat seal 36 until the end of the second channel 302 introduced where the second direct contact 32 already in the end section 302A on a fastening device provided therein 38 is pre-assembled so that the cable end section 7A on the second direct contact 32 rests. By closing the lid 35 in the direction of an arrow P thereafter the cable end portion 7A of the second cable 7 through a hold-down 35B on one of the contact carriers 30 facing inside 35C of the lid 35 is arranged, perpendicular to the longitudinal direction L on the second direct contact 32 pressed. Here, the second connection device 42 , as in 2 shown in the form of an insulation displacement connection between the second cable 7 and the second direct contact 32 produced. This is the second cable 7 between two V-shaped cutting edges 32A pressed, leaving an insulation 7B disconnected and an electrical contact to a cable strand 7C is reached. On the inside 35C of the lid 35 is also a hold-down 35A provided the second cable 7 with the lid closed 35 on a support device 37 fixed. When closed, the lid is 35 at one on the contact carrier 30 provided latching device 304 locked. When in 1 illustrated plugged state contact the direct contacts 31 . 32 thus the first and second contact areas 51 respectively. 52 each in a contact direction K.

Alternatively, instead of the lid 35 as contact-producing element and a tool device for producing the insulation displacement connection with the lid open 35 be used.

In the described inventive electrical arrangement 1 Thus it is possible to use different connection devices 41 . 42 in different levels for the direct contacts 31 . 32 to use that on the backing plate 2 exposed contact areas 51 . 52 contact directly. As a result, a compact design, space-minimized multi-row direct contact with a variety of inexpensive, economical to produce identical parts can be achieved, which greatly simplify the assembly process during manufacture and prevent damage here. In addition, tooling costs and logistics expenses are significantly reduced as a result.

Hereinafter, with reference to 3 an electrical arrangement 1 with a direct plug-in element 3 according to a second preferred embodiment of the invention described in detail. The same or functionally identical components are designated here by the same reference numerals as in the first embodiment.

In contrast to the first embodiment described above, the carrier plate 2 of the second embodiment next to the exposed first and second contact areas 51 . 52 that on the first flat side 21 are arranged, further fourth and fifth contact areas 53 . 54 on that on an opposite second flat side 22 are arranged exposed. With the direct plug-in element 3 of the second embodiment, the first and second direct contacts 31 . 32 in a first contact carrier part 30A arranged, essentially the contact carrier 30 of the first embodiment corresponds. Furthermore, a third and fourth direct contact 33 . 34 in a second contact carrier part 30B arranged, which is substantially identical to the first contact carrier part 30A is trained. The first and second direct contacts 31 . 32 are here to the third and fourth direct contacts 33 . 34 aligned opposite by 180 °. Further, the third direct contact 33 via a third connection device 43 on a third cable 8th connected and the fourth direct contact 34 is via a fourth connection device 44 on a fourth cable 9 tethered.

How out 3 Further, it is the third direct contact 33 identical to the first direct contact 31 and the fourth direct contact 34 identical to the second direct contact 32 educated. On the first contact carrier part 30A and on the second contact carrier part 30B is also the seal 36 provided by the first and second cables 6 . 7 in the first contact carrier part 30A or the third and fourth cables 8th . 9 in the second contact carrier part 30B are led into it. The first and second direct contacts 31 . 32 Contact the first and second contact areas 51 . 52 in the contact direction K, while the third and fourth direct contacts 33 . 34 the third and fourth contact areas 52 . 54 opposite to the contact direction K contact.

In the above-described second embodiment of the electrical arrangement according to the invention 1 It is thus possible, an extremely compact design, space-minimized multi-row direct contact on both flat sides 21 . 22 the carrier plate 2 to provide with a variety of inexpensive and economical to produce identical parts that simplify the assembly process during manufacture significantly and prevent damage here largely. This results in a double number of direct contacts with a significantly reduced length of the electrical arrangement 1 realizable. In addition, identical tools can be cost-effective for the manufacture of the first and second contact carrier parts 30A . 30B be used, whereby the required total cost is significantly reduced.

Otherwise, this embodiment corresponds to the first embodiment, so that reference can be made to the preceding description.

Hereinafter, with reference to 4 a direct plug-in element 3 according to a third preferred embodiment of the invention described in detail. Identical or functionally identical components are designated here by the same reference numerals as in the first and second embodiments.

In contrast to the second embodiment described above, in the third embodiment, the first and second contact carrier parts 30A and 30B of the direct plug-in element 3 through a joint 45 movably connected to each other, which at the seal 36 facing end areas 61 . 62 the first and second contact carrier parts 30A respectively. 30B is arranged. By the possible in and opposite to the contact direction K movement of the first and second contact carrier parts 30A and 30B can any tolerances of the carrier plate 2 and / or their contact areas 51 . 52 . 53 . 54 during insertion into the direct plug 3 be balanced against the longitudinal direction L. Alternatively, the joint 45 also via a not shown here, additionally arranged spring element relative to the support plate 2 be biased. The resulting contact forces on the two flat sides 21 . 22 the carrier plate 2 ensure reliable and continuously reliable direct contacts of the electrical system.

Otherwise, this third embodiment corresponds to the previously described embodiments, so that reference can be made to the preceding descriptions.

Hereinafter, with reference to 5 a direct plug-in element 3 according to a fourth preferred embodiment of the invention described in detail. Identical or functionally identical components are designated here by the same reference numerals as in the preceding embodiments.

In contrast to the third embodiment described above, in the fourth embodiment, the first and second contact carrier parts 30A and 30B of the direct plug-in element 3 at the end areas 61 . 62 rigidly connected and formed as a one-piece component. When inserting the carrier plate 2 in the one-piece component produce the elastic deformations occurring in this case, in particular made of plastic contact carrier parts 30A and 30B an increased contact pressure on the direct plug contacts, resulting in reliable Direktkontaktierungen for all operating conditions and applications.

Claims (10)

Direct plug-in element, comprising: - a contact carrier ( 30 ), - at least a first direct contact ( 31 ), and At least one second direct contact ( 32 ), The first direct contact ( 31 ) via a first connection device ( 41 ) on a first cable ( 6 ) is electrically connected, - wherein the second direct contact ( 32 ) via a second connection device ( 42 ) on a second cable ( 7 ), and - wherein the first and second connection devices ( 41 . 42 ) are different. Direct plug-in element according to claim 1, characterized in that the first connecting device ( 41 ) is a crimping device and the second connecting device ( 42 ) is an insulation displacement connection. Direct plug element according to one of the preceding claims, characterized in that the contact carrier ( 30 ) a lid ( 35 ) having. Direct plug-in element according to claim 3, characterized in that the cover ( 35 ) is arranged such that when closing the lid ( 35 ) the second cable ( 7 ) is pressed into the insulation displacement connection to make an electrical connection. Direct plug element according to one of the preceding claims, characterized in that on the contact carrier ( 30 ) a seal ( 36 ), in particular a mat seal, is arranged. Direct plug-in element according to one of the preceding claims, characterized in that the first and second direct contact ( 31 . 32 ) in a first contact carrier part ( 30A ) a third and fourth direct contact ( 33 . 34 ) in a second contact carrier part ( 30B ), and the first and second direct contacts ( 31 . 32 ) on the third and fourth direct contacts ( 33 . 34 ) are aligned opposite by 180 °, - wherein the third direct contact ( 33 ) via a third connection device ( 43 ) on a third cable ( 8th ), the fourth direct contact ( 34 ) via a fourth connection device ( 44 ) on a fourth cable ( 9 ), and - wherein the third and fourth connection devices ( 43 . 44 ) are different. Direct plug-in element according to one of the preceding claims, characterized in that the third connecting device ( 43 ) is a crimping device and the fourth connecting device ( 44 ) is an insulation displacement connection. Arrangement according to claim 6 or 7, characterized in that the first and second contact carrier part ( 30A . 30B ) by means of a joint ( 45 ) connected is. Arrangement according to claim 6 or 7, characterized in that the first and second contact carrier part ( 30A . 30B ) is a one-piece component. Electrical arrangement comprising: - a direct plug-in element ( 1 ) according to one of the preceding claims, and - a carrier plate ( 2 ) with at least two exposed contact areas ( 51 . 52 ), - one of the direct contacts ( 31 . 32 ) one of the contact areas ( 51 . 52 ) and, - the contact areas ( 51 . 52 ) from a support plate edge ( 20 ) are spaced far apart.

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