DE10257308B3 - Multiple plug-in connector for circuit boards has many cutting and clamping contact elements with fork-shaped contact regions, accommodated in two-part housing - Google Patents

Abstract

The multiple plug-in connector (1) may be used with circuit boards. It has many cutting and clamping contact elements (30,31) with fork-shaped contact regions (32,33), to engage wires. They are accommodated in a two-part plastics housing (10,20). The two parts are held together by projections (22) engaging in cutouts (21). The contacts may engage ribs on one of the housing parts and there may be clamping contacts (11).

Description

The invention relates to a connector for printed circuit boards according to the generic term of claim 1.

From the DE 38 28 904 C2 A connector for printed circuit boards is known, consisting of contact elements which are electrically conductively connected to the conductor tracks of the printed circuit board and of a socket provided with counter-contacts, the contact elements being electrically conductive, with angled strip parts for gripping through receiving openings formed on the printed circuit board and for contacting one of the conductor tracks serving flat metal strips are formed, which are electrically conductively connected to the conductor tracks and are applied to an edge region of the circuit board, the socket being provided with a receiving opening for plugging onto the edge region of the circuit board and with the mating contacts for contacting the metal strips, each of which Metal strips two angled resilient strip parts provided with longitudinal slots and with side locking lugs for engaging behind the circuit board for pushing through and for locking in two in the area of the L has printed circuit board mounted through holes serving as receiving openings. A disadvantage of the known connector is the relatively complex contacting of the circuit board.

From the DE 100 29 649 C2 is known a distributor connection module for telecommunications and data technology, comprising a housing in which externally accessible input and output contacts for connecting lines or wires are arranged, the housing being formed with a cavity in which a printed circuit board with functional elements is arranged which is supported in the housing, the functional elements being arranged electrically between the input and output contacts and the input contacts and the output contacts on opposite end faces of the housing. The input and output contacts can be designed as insulation displacement contacts, each of which is formed with a fork-shaped contact, by means of which a non-positive electrical connection to the functional elements can be established. Contact pads are arranged on the circuit board, which are preferably located on the top and bottom of the circuit board. These positive connections are considerably more tolerant of manufacturing and assembly tolerances than solder connections. As a result, all insulation displacement contacts can be contacted simultaneously by snapping the fork-shaped contacts onto the contact pads. Furthermore, this contacting allows easy dismantling, for example if a defective circuit board has to be replaced. To produce the distributor connection module, the printed circuit board with the functional elements is inserted into a first housing part and a second housing part carrying the input contacts is snapped on. For this purpose, the insulation displacement contacts are fixed on the housing, whereas the fork contacts are free. Since large forces can occur during the subsequent wiring of the insulation displacement contacts, a plastic-shaped holding or supporting element can additionally be snapped onto the printed circuit board over the full width of the printed circuit board, which fixes the fork-shaped contacts on the printed circuit board.

From the DE 101 11 571 A1 an electrical contact element for a connector arrangement is known. The contact element is formed at one end with an insulation displacement area and at the other end with a fork contact. In order to increase the elasticity of the fork contact, the contact arms are connected directly to the lower area of a lateral connecting piece of the double insulation displacement clamps and then bent towards the center of the contact element, so that an extended spring travel results.

From the DE 38 06 263 A1 or the DE 199 45 412 A1 In each case, a connector for printed circuit boards is known, comprising a number of contact elements, the contact elements each having two connection sides, one connection side being an insulation displacement contact for connecting wires and the other connection side being a fork contact for contacting connection surfaces on a circuit board is, and a plastic housing into which the insulation displacement contacts of the contact elements can be inserted, the insulation displacement contact and the fork contact being rotated relative to one another and at least one lower edge of the insulation displacement contact being supported on the plastic housing, so that the contact elements are held captively in the plastic housing in the event of connection forces on the insulation displacement contacts, the plastic housing comprising at least one chamber-shaped region and the fork contacts being completely accommodated in the longitudinal direction by the plastic housing.

Based on this known state of the Technology, the invention is based on the technical problem, a To create connectors by means of which the contacting process between connector and circuit board is improved as well as a associated To create distribution board connection module.

The solution to the technical problem results from the subject matter with the features of claims 1 and 6. Further advantageous designs of the invention emerge from the subclaims.

The contact elements are of this type in the plastic case supported that this occurs when the connection forces occur on the insulation displacement contacts are held captive in the plastic housing. Thereby the connector can be attached to the circuit board before which forms the counter bearing in the prior art for absorbing the connection forces, with those to be unlocked Wires are wired. The pre-assembled connector can then simply be plugged onto the circuit board. hereby on the one hand, the circuit board does not have to absorb any switching forces and also a complete change of the connector with the connected wires is easily possible. It supports at least one lower edge of the insulation displacement contact on the housing. The plastic housing carrying the contact elements comprises at least one chamber-shaped area, in which ribs are arranged on the inside, the guides for the Define fork contacts, with the fork contacts in the longitudinal direction from the plastic case Completely are included and the contact areas of the fork contacts via the ribs protrude. As a result, all fork contacts are defined to each other aligned and can be easily pushed onto the circuit board, because tilting of the fork contacts is impossible. Ribs are beveled in the front area, which makes the attachment process is simplified.

In a preferred embodiment are the insulation displacement contact and the fork contact to each other in the Range of approx. 45 ° to each other twisted arranged. The arrangement of the contact edges of an insulation displacement contact is at an angle of approx. 45 ° with regard to the connection process of advantage, so that at the one-story Training of the contact element as a stamped or bent part inevitably a Edge forms that for support suitable is.

In a further preferred embodiment is the plastic case formed in two parts, wherein the housing parts can be locked together. This significantly simplifies the support of the contact element in the housing. You can do this then the contact elements, as is known, first from below with the insulation displacement contacts in the first housing part be pushed where they are held. Then will then the second housing part snapped on from below, making the contact elements captive supported and the support points the connection forces be able to record. On Another advantage of the two-part housing is easier disassembly, which makes plastic and metal parts very easy for recycling purposes can be separated.

In a further preferred embodiment are on the outside of the plastic housing Arranged locking elements, by means of which the connector with a a circuit board accommodating further housing can be locked.

In a further preferred embodiment is the connector with wire guide eyelets for the wires to be connected educated.

A preferred application area of the connector according to the invention is the use in a distributor connection module.

 The invention is described below of a preferred embodiment explained in more detail. The Show:

1 1 shows an exploded perspective view of a connector for printed circuit boards,

2 a cross section through the assembled connector,

3 a rear perspective view of the connector,

4 a perspective exploded view of a distributor connection module and

5 a perspective view of the assembled manifold connection module.

In the 1 is the connector in perspective 1 shown. The connector 1 comprises a first housing part 10 , a second housing part 20 and a variety of contact elements 30 , The first housing part 10 is with clamping bars 11 , Wire guide eyelets 12 and latches 13 educated. The second housing part 10 is with snap shots 21 and latches 22 educated. Furthermore, the part of the second housing part facing the printed circuit board forms 20 a chamber-like area with ribs on the inside and top and bottom 23 are arranged, which is partly in 3 is recognizable, the ribs 23 being chamfered in the front area. The bevel makes it easier to push the connector onto the circuit board. The contact elements 30 each have an insulation displacement contact 31 and a fork contact 32 on, with insulation displacement contact 31 and fork contact 32 are rotated by approx. 45 ° to each other. The fork contact 32 each has two rounded, domed contact areas 33 on. The insulation displacement contacts 31 of the contact elements 30 are in shots between the clamping ribs 11 inserted where these are mechanically fixed. Then the second housing part 20 on the first housing part 10 snapped on, the locking lugs 13 in the rest shots 21 intervention. Furthermore, the contact elements 30 on the lower edges 34 and / or lower edge 35 the insulation displacement contacts 31 on invisible mechanical stops in the second housing part 20 mechanically supported.

This composite state is in the 2 and 3 shown. It poses 2 - A cross section through the connector, the interface between two clamping ribs. How one especially in 2 can see the lower edge 35 on a stop of the second housing part 20 on. The contact elements 30 are mechanical in the connector 1 held captive, so that in this state a wire to an insulation displacement contact 31 can be switched on without the switch-on forces the contact element 30 can push out. The mechanical connection forces are determined by the mechanical stops in the second housing part 20 added. Ribs 23 are dimensioned in height so that the contact areas 33 protrude. This ensures that there is sufficient contact pressure between the contact area 33 and a contact pad arranged on the circuit board comes about.

In the 4 is a perspective connection module 40 for telecommunications and data technology with the connector according to the invention 1 shown. The distributor connection module 40 also includes a first housing part 50 and a second housing part 60 that can be locked together. In the distributor connection module 40 is a circuit board 70 arranged. The second housing part 60 is with two semicircular clamping elements 61 trained, via which the distributor connection module 40 can be snapped onto profile bars, not shown. The clamping elements are for looping through a ground connection 61 slotted so that an annular ground contact that is on the circuit board 70 is arranged through the slots 62 protrudes and makes electrical contact with the profile bars. The first housing part 50 includes clamping bars 51 and latches 52 that in snap-in shots of the second housing part 60 intervention. The clamping bars 51 have a different width so that the crosstalk between contact pairs is reduced. Between the clamping bars 51 contact elements, not shown, are also arranged in the region of the clamping webs 51 as insulation displacement contacts and to the printed circuit board 70 are designed as fork contacts. In the normal case, these contact elements are identical to the contact elements 30 educated. In principle, the housing part 50 analogous to the connector 1 be trained. However, isolating contacts should be on the circuit board 70 be arranged as in the DE 100 29 649 C2 described, the plastic-shaped holding or supporting element described there is preferably used. This holding element can be equipped with the contact elements before or after it is latched to the circuit board, so that the fork contacts the circuit board 70 to contact. The insulation displacement contacts that then stand upward are then inserted into the openings of the first housing part 50 pushed and the first housing part 50 with the second housing part 60 locked. However, it is also possible to use the insulation displacement contacts to contact the contact elements on the first housing 50 to fix and then push the fork contacts simultaneously into corresponding openings in the holding element. The holding element, not shown, is via locking lugs 80 . 81 both with the first housing part 50 as well as the second housing part 60 locked. The second housing part is on the side walls 60 with ventilation slots 63 trained to the heat loss of the components on the circuit board 70 dissipate.

In the 5 is the complete distributor connection module 40 with snap-in connector 1 shown.

1

Connectors

10

housing part

11

clamping webs

12

Drahtführungsösen

13

locking lugs

20

housing part

21

locking receivers

22

locking lugs

23

ribs

30

housing part

31

Insulation displacement contact

32

fork contact

33

contact areas

34

lower edge

35

lower edge

40

Distribution connection module

50

housing part

51

clamping webs

52

locking lugs

60

housing part

61

clamping elements

62

slots

63

vents

70

circuit board

80

locking lugs

81

locking lugs

Claims (6)

Connectors for printed circuit boards, comprising a number of contact elements, the contact elements each having two connection sides, one connection side being an insulation displacement contact for connecting wires and the other connection side being a fork contact for contacting connection surfaces on a printed circuit board, and one Plastic housing into which the insulation displacement contacts of the contact elements can be inserted, the insulation displacement contact and the fork contact being rotated relative to one another and at least one lower edge of the insulation displacement contact being supported on the plastic housing, so that the contact elements when they occur Contact forces on the insulation displacement contacts are held captively in the plastic housing, the plastic housing comprises at least one chamber-shaped area and the fork contacts are completely received in the longitudinal direction by the plastic housing, characterized in that in the chamber-shaped area on the inside ribs ( 23 ) are arranged, the guides for the fork contacts ( 32 ), whereby the contact areas ( 33 ) of the fork contacts ( 32 ) over the ribs ( 23 ) protrude and the ribs ( 23 ) are bevelled in the front area. Connector according to claim 1, characterized in that the insulation displacement contact ( 31 ) and the fork contacts ( 32 ) are rotated relative to each other in the range of 45 °. Connector according to claim 1 or 2, characterized in that the plastic housing is formed in two pieces, the housing parts ( 10 . 20 ) can be locked together. Connector according to one of the preceding claims, characterized in that the connector ( 1 ) with wire guide eyelets ( 12 ) is trained. Connector according to one of the preceding claims, characterized in that on the outside of the connector ( 1 ) Locking elements are arranged, by means of which the connector ( 1 ) with a circuit board ( 70 ) receiving further housing can be locked. Distribution connection module for telecommunications and data technology, comprising a housing in which input and output contacts for connecting lines or wires are arranged, which are accessible from the outside, the housing being formed with a cavity in which a printed circuit board with functional elements is arranged, which is arranged in the housing is supported, the functional elements being arranged electrically between the input and output contacts and the input and output contacts on opposite end faces of the housing, and at least the output contacts being designed as insulation displacement contacts, characterized in that at least the output contacts as Connector ( 1 ) are designed according to one of claims 1 to 5.