DE3433000A1 - Plug connector and a contact element therefor - Google Patents

Abstract

A plug connector having an insulating body for holding a large number of contact elements which in each case have a connecting part which is connected via a centre piece to a joining part, which joining part can be connected, for example, to a cable, each centre piece having at least two limbs which overlap one another.

Description

Connector and contact element therefor

The invention relates to a connector, in particular on a connector of the so-called trapezoidal design. The invention relates to also on a contact element, in particular on one in a connector, especially of the trapezoidal type, usable contact element.

DE-AS 26 26 631 already shows a connector and a contact element therefor, in which a middle part that can be bent in different ways is provided is to provide a pitch compensation in this way, i.e. an adjustment to allow between the spacing of the connecting parts and the connecting parts.

In this known contact element, the middle parts are used for this purpose bendable at their connection points with the end parts. The bending takes place in different ways, essentially in the direction of the connector's longitudinal axis, wherein the ends of the connecting parts when installed in the connector on arrange different levels (Fig. 6 of DE-AS 26 26 631). Furthermore is at the disadvantage of this known construction that a large overall height of the connector (in the plug direction) is required.

From DE-GB 81 07 135.3 it is already known, contact elements to be designed in the manner of a crank arm, i.e. connecting sections protrude from contact organs outwards towards the connector sidewall, then from the connecting sections Fork contacts protrude upwards. In this way a division compensation is achieved, however, there is a considerable width for the connector, as through the use of the connecting sections the fork contacts near the side walls come to rest. Another disadvantage is that the fork contacts are not on a straight line, but rather lie on a curved line, what making the connection of the contacts on the punched strip difficult at this point.

The invention is based on the object of a connector and to provide a contact element for this purpose that the connector, in particular the Trapezoidal design can be realized, which in particular also for the stripping-free Suitable for flat cable connection are one or more of the following advantages or Features are achievable: 1. There is a perfect balance between the Connection part pitch (1.37 mm) and the conductor spacing (1.27 mm) of the flat cable inside the connector.

2. A low design is achieved. Preferably, the connection-side The overall height, measured from the flange plug-in side, should be c 10 mm. Both on the plug as on the connection side of the connector are the connecting parts (e.g. contact pins) or the connecting parts, preferably in the form of insulation displacement terminals, on each aligned in a straight line.

3. The row spacing of the connection elements can be kept small. The only limitation is the clearance and creepage distances. This can also Standardized metal shells are used on the connection side of the connector.

Furthermore, the measures of the invention make it possible to reduce the space requirement of the contact board in the longitudinal direction of the strips = 2 x cable division (2.54 mm).

This means that the distance between the contacts on the punched strip corresponds to the distance the contact connection elements in the assembled state. This allows the contacts can be mounted in rows in the insulator.

In general, the invention aims to overcome the disadvantages of known connectors or contact elements.

According to one aspect of the invention, a connector, in particular the so-called trapezoidal type, is provided, which has contact elements, each of which have a connecting and a connecting part and a middle piece in between, each middle piece two more or less overlapping, by bending having formed leg parts. Preferably the center piece is substantially U-shaped bent so that the two legs are the legs of a "U".

According to a further aspect of the invention, a contact element is provided, which is a connecting part and a connecting part connected to this via a central piece having, wherein the middle piece by bending one another completely or partially overlapping Has legs such that the connecting part and connecting part are substantially adjacent at a distance one above the other are arranged.

Preferred embodiments of the invention emerge in particular from the subclaims.

According to a further aspect of the invention, a spring clip is provided, which serves on the one hand as a strain relief and on the other hand as the earthing of the shield of the flat cable. The spring clip is preferably equipped with spring arm means, which are in contact with the inside of the housing. The case in turn consists neither of sheet metal or is in any case on his Metallized inside. The spring clip is also preferably on one side grounded metal flange in contact.

Further advantages, objects and details of the invention result from the following description with reference to the drawing, the claims and only the Drawing; In the drawing: FIG. 1 shows a schematic plan view of the connection side a trapezoidal connector, only half of which is shown is; FIG. 2 shows a schematic section approximately along line I-I in FIG. 1; FIG. Fig. 3 shows a schematic section essentially along line II-II in FIG. 1; Fig. 4 a side view of a contact element according to the invention (pitch difference X); Fig. 5 shows the same contact element as in Fig. 4, seen in plan view (pitch difference X is reached by angular position +); Fig. 6 is a plan view of the inventive Contact element, but here the middle piece of the contact element in a different way than is bent in the contact element according to FIGS. 4 and 5 (pitch difference = O; T = 0); 7 shows a partially sectioned side view of the contact element according to FIG Fig. 6; 8 shows the raw form of contact elements according to the invention after punching out from a sheet metal strip, of which the punched or carrier strip can still be seen.

Figure 9 shows a further embodiment of the invention, namely a Connector in longitudinal section; Figure 10 shows the connector according to Figure 9 in one schematic cross section.

In FIGS. 1-3, a parallel one designed according to the invention is shown running longitudinal sides 50, 51 and with these having a trapezoidal shape forming transverse sides Connector 1 shown schematically, the contact elements formed according to the invention 2 used. The connector 1 is preferably a so-called trapezoidal connector. The connector 1 according to the invention is preferably for connection without stripping a flat cable 6 (see. Fig. 3) is suitable.

The connector 1 shown has two rows (it could but also several) of contact elements (see. Fig. 1 and 3).

The connector 1 defines a longitudinal axis 17 and a perpendicular one associated transverse axis 18. An insulating body extends along the longitudinal axis 17 3, which has openings 19 for receiving the contact elements 2. The openings 19 are arranged along two parallel lines 40, 41.

which run parallel to the longitudinal axis 17. The centers of the Openings 19 have a pitch 42 which is, for example, 1.37 mm. Contact elements 2 can also be arranged along three or more parallel lines be.

The contact element 2 according to the invention will be described in more detail below described, but it should be noted here that each contact element 2 has a connecting part 9 and a connecting part 10 which is connected to the connecting part 9 is connected via a middle piece 8 forming a bulge.

The contact elements are preferably seated with the connecting part 10 2 in the aforementioned openings 19 of the insulating body. The insulator 3 is in turn formed by a lower housing part 4 and an upper housing part 5 Plug connector housing housed. Fig. 3 shows how this is preferred, according to the invention Way done. In detail, the middle pieces 8 of the contact elements run 2 preferably around an insulating plate 11 and then run through openings in a holding part 12 which, together with the insulating body 3, the insulating plate 11 specifies.

Preferably, as shown in the drawing, the connecting part 9 (and also the connector 29 to be described) in the form of an insulation displacement connector designed so that a stripping-free connection of a flat cable 6 is possible, namely, by means of a pressure piece 13, the flat cable 6 is converted into that shown in FIG. 3 Position pressed.

In Fig. 3 it is shown that the flat cable 6 around the pressure piece 13 Is laid around in a U-shape and a strain relief is formed by a metal bracket 15 will. The metal bracket 15 also makes contact with the shielding 14 of the flat cable 6 and puts it on the same potential as the lower housing part 4 in that metal bracket 15 is attached to the lower housing part 4.

As can be seen in particular in FIG. 1, each contact element must 2 is somewhat different depending on its lateral distance from the transverse axis 18 Have shape with respect to its center piece 8, since the division 43 of the flat cable 6 (see. Fig. 2) and the pitch 44 (see. Fig. 1) of the slot centers 45 of adjacent Contact elements 2 are adapted to the pitch 42 (FIG. 1) of the connector 1 have to be.

It can be seen in Fig. 2 that the unspecified wires of the Flat cable 6 alternately with contact elements 2 on the lines 40 and 41 in contact to be brought.

The contact element 2 has - as mentioned - according to the invention a center piece 8, which has two leg parts 8a, 8b, which at least partially with a distance D (cf.

Fig. 7) overlap, so that a low overall height 46 for the Connector 1 can be achieved (distance D is also conceivable with 0). Preferably the middle piece 8 is essentially U-shaped, like this is shown in Fig. 7, or the U is slightly twisted, as can be seen in Fig. 5 recognizes what is required for reasons of the arrangement according to FIG.

By bending one leg part, preferably in a U-shape 8a over the other leg part 8b achieved mc that the connecting part 9 in the Can be placed near or on the associated line 40 or 41, as this is shown in particular in FIG. This gives you next to the pitch compensation (between pitch 42 and pitch 43 of the flat cable) a small overall width, which enables the use of standardized lower housing parts 4.

The contact element 2 shown in Figs. 4 and 5 is with respect to its U-shaped center piece 8 designed such that the maximum angle + between the edges 47, 48 (see. Fig. 5) occurs, which at the maximum pitch difference X (Fig. 5) occurs. The contact element according to FIGS. 4 and 5 is thus in the Connector (see Fig. 1) on line 40 on the furthest outward contact element 2.

Figures 6 and 7 show the contact element lying on the transverse axis 18, where the angle is equal to 0.

The leg 8b extending from the connection part 9 preferably runs perpendicular, i.e. parallel to the transverse axis of the connector, while that of the connecting part 10 outgoing leg 8a extends obliquely with respect to transverse axis 18.

But it would also be possible for both legs 8a, 8b to run obliquely or else that the leg 8a run vertically and the leg 8b at an angle. Preferred is the embodiment shown, where leg 8b perpendicular and leg 8a run obliquely, for the following reason: The contact elements can, like shown in FIG. 8, connected to the punched strip 16 via the connection part 9 will In the illustrated embodiment shown in FIG preferably the connection parts are essentially in the form of insulation displacement terminals on the same line 40 resp.

41 like the centers of the openings 19. It is also possible to have the To arrange connecting parts 9 on lines parallel to line 40 and 41, respectively.

Furthermore, it is provided in the preferred embodiment according to FIG. 1, that the U-shaped center pieces 8 each extend towards the edge of the connector 1 extend.

According to a further preferred embodiment, extend the U-shaped middle pieces 8 towards the connector longitudinal axis 17. According to another Embodiment of the invention provides that the U-shaped center pieces of the two rows of contact elements, arranged on lines 40, 41, alternate to the edge or

to the longitudinal axis 17 extend so that a total of a toothed interlocking. Arrangement for the U-shaped middle pieces 8 of the two rows of contact elements 2 results.

The contact elements 2 are preferably made in one piece from sheet metal, namely, they are punched out of a sheet metal strip, so that the in Fig. 8 shows the arrangement shown, where after the punching process the flat contact elements 2 still hanging on a carrier strip 16, of which they are finally dashed along the line shown lines can be separated. In Fig. 8 is the connecting part 10 still flat, so not yet brought into its final round plug-in shape, like this is shown in FIG. As already mentioned, the connection part 9 is preferably designed in the form of an insulation displacement terminal having a collar 50 (Fig. 8), with which it can rest on the holding part 12.

It should be noted that the connecting part 10 in the drawing is shown schematically as a plug-in part, but also in the form of a socket part can be provided.

Another preferred embodiment of the invention is in the lower one Half of the illustration according to FIG. 3 is shown. According to the invention can namely also a two-part contact element 20 may be provided, which like the contact element 2 consists of a middle piece 28, a connecting part 29 and a connecting part 30. In the case of the two-part contact element 20, the center piece 28 is now formed by that each has a flat flag 25 of the connecting part 30, each with a flat The lug 26 of the connecting part 29 is connected, for example welded, is. The two-part Training has the following advantages: The connector 29 is for pin and socket contacts Use bår the punching tools will be easier. The materials for connecting part 30 and connecting part 29 can be selected differently.

The parts 3, 11, 12 could also be made by casting resin or by overmolding be formed with molding material.

In Figures 9 and 10 is a further embodiment of the invention shown. FIG. 9 shows two different longitudinal sectional views. The left one Part of FIG. 9 results from a section approximately along line A-B in FIG 10. The right-hand part of FIG. 9 results when the section line A-B in FIG 10 is moved substantially further to the right. Figure 10 shows a cross section by the connector 100 according to the invention, along line C-D in FIG 9.

The exemplary embodiment according to FIGS. 9 and 10 is a further development of the embodiment according to Figure 3 insofar as the bracket already shown there 15 is further developed.

The plug connector 100, which is particularly suitable for flat cables 101, has essentially a housing 102, which is preferably composed of one piece, as well as a insulating body 103 arranged therein. They are already seated in the insulating body 103 described contact elements 2, or any other contact elements. The flat cable 101 - see also FIG. 10 - runs around a body 104 and is from this to the connection parts of the contact elements, not shown here 2 pressed on to make contact.

A shield 105 of the flat cable 101 ends before the point where the Flat cable 101 is bent around the body 104. In the embodiment according to In FIGS. 9 and 10, the cable jacket 106 is indicated by the cross-hatching.

The lower end of the insulating body 103 is seated on a front plate 107 and two metal flanges 108, 109, which are connected to the front plate 107 and unspecified openings, which correspond to openings 110 in the housing 102 align. These openings are used in a known manner to accommodate screws, which can cause a lock with the mating connector, not shown.

The connection of the individual components of the connector 100 can be provided in the usual way. The arrangement and formation of Strain relief means in the form of a bracket, specifically a spring bracket 150. On the one hand, the spring clip 150 provides strain relief and, on the other hand, ensures that the shield 105 is properly grounded. For this reason the Metal spring clip 150. The spring clip 150 is substantially U-shaped with a Transverse part 112 and two legs 113, 114. The transverse part 112 - see FIG. 10 - has a somewhat deeper screen contact part 115, and two diametrically opposed Spring parts 116, 117 provided on the shield contact part 115. Between the transverse part 112 and the shield 105, a large contact area 118 is formed.

Another contact point 119 is between the spring clip 150, and although its legs 113, 114 and the metal flanges 108, 109 are provided. Preferably For this purpose, the flange parts 108, 109 have a projection 120 on which the lower ends of the legs 113, 114 bear.

As already mentioned, the housing 102 is made for shielding purposes often made of metal or a metallized plastic. In the latter case For example, a thin metal layer can be provided on the inner surface of the housing 102 be. According to the invention, the strain relief means are now in the form of the spring clip 150 housing contact means 152 in the form of spring arms. Everyone who Leg 113, 114 preferably has a spring arm 152. But it can also several spring arms can be provided for each leg 113, 114. These spring arms 152 form contact points 151 with the inner surface of the housing for the purpose of Grounding.

According to the invention, the spring arms 152 are integral with the spring clip 150 trained. The spring arms 152 protrude from the legs 113, 114 in the direction towards the housing surface, as shown in particular in FIG. the In the assembled state of the connector 100, spring arms are supported on en internal housing surfaces are resilient.

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Claims (50)

Claims 1. Connector with an insulating body (3) for Receiving a large number of contact elements, each of which has a connection part (9), which is connected to a connecting part via a center piece (8), which the latter can be brought into connection, for example, with a cable, d a d u r c h e k e n n n n e i c h n e t that each middle piece (8) has at least two legs has that overlap each other. 2. Connector according to claim 1, characterized in that the overlapping legs from each other at a distance D (Fig. 7) are arranged. 3. Connector according to claim 1 or 2, characterized in that that the two legs are essentially perpendicular to the plug-in direction of the connector are trained. 4. Connector according to one or more of the preceding claims, characterized in that the center piece (8, 28) is essentially U-shaped owns. 5. Connector according to one or more of the preceding claims, characterized in that the center piece (8) is bent in a U-shape. 6. Connector according to one or more of the preceding claims, characterized in that the center piece (28) is substantially U-shaped possesses and by a flag (25) of a connecting part (30) and a flag (28) a connecting part (29) is formed, the two flags with each other, for example connected by welding. 7. Connector according to one or more of the preceding claims, characterized in that the bulge formed by the two legs points to the nearest connector long side (50 or 51). 8. Connector according to one or more of the preceding claims, characterized in that in each case several contact elements on one parallel to Long side (50) of the connector extending line (40) are arranged. 9. Connector according to one or more of the preceding claims, characterized in that in each case a plurality of contact elements (2) on two (40, 41) or more lines running parallel to the connector's long side (50, 51) are arranged. 10. Connector according to one or more of the preceding claims, characterized in that the contact elements with their connecting parts (10) sit in an insulating body (3). 11. Connector according to one or more of the preceding claims, characterized in that the insulating body (3) has a plurality of openings (19) has, which serve to accommodate the connecting parts. 12. Connector according to one or more of the preceding claims, characterized in that the connecting parts (10) in the openings (19), the preferably have circular cross-section, are arranged. 13. Connector according to one or more of the preceding claims, characterized in that an insulating plate (11) is provided around which the central pieces (8) walk around. 14. Connector according to one or more of the preceding claims, characterized in that the middle pieces (8) between the insulating body (3) and a holding part (2) are held. 15. Connector according to one or more of the preceding claims, characterized in that the connecting part (9) is designed as an insulation displacement connector. 16. Connector according to one or more of the preceding claims, characterized in that the connecting part is a plug-in part. 17. Connector according to one or more of the preceding claims, characterized in that the contact element is punched out of sheet metal. 18. Connector according to one or more of the preceding claims, characterized in that the one leg part parallel to the transverse axis (18) of the Connector runs. 19. Connector according to one or more of the preceding claims, characterized in that the Sc.a, grand part (8b), which in connection with the Terminal l (9) is parallel to the transverse axis (18). 20. Connectors'according to one or more of the preceding claims, characterized in that the leg part adjacent to the connecting part (10) (8a) runs parallel to the transverse axis (18). 21. Connector according to one or more of the preceding claims, characterized in that both leg parts (8a, 8b) obliquely with respect to the transverse axis (18) run. 22. Connector according to one or more of the preceding claims, characterized in that the connection part (9) is offset in height and laterally is arranged opposite the end of the connecting part (10) which is connected to the middle piece (8) communicates. 23. Connector according to one or more of the preceding claims, characterized in that the insulation displacement terminals are on a line, preferably on the line (40 or 41), on which the corresponding center points of the openings (19) of the insulating body (3). 24. Connector according to one or more of the preceding claims, characterized in that the bulges all lie on a line (40) Contact elements (2) protrude towards the closest connector long side (50). 25. Connector according to one or more of the preceding claims, characterized in that the bulges of all the middle pieces (8) on a line (40) lying contact elements (2) to the longitudinal axis (17) of the connector protrude 26. Connector according to one or more of the preceding claims, characterized in that with two rows of contact elements, arranged on Line (40, 41), the contact elements (2) provided on a line (40) to the nearest one Connector longitudinal side (50) protrude, while those arranged on line (41) Contact elements (2) protrude towards the nearest longitudinal side (51). 27. Connector according to one or more of the preceding claims, characterized in that when the contact elements are arranged on two lines (40, 41) the bulges of the contact elements (2) to the connector's longitudinal axis (17) protrude out and so offset with respect to each other that no interference or Contact occurs. 28. Connector according to one or more of the preceding claims, characterized in that a flat cable (6) using a pressure piece (3) is pushed onto the insulation displacement terminals (9, 29). 29. Connector according to one or more of the preceding claims, characterized in that the flat cable (6) is U-shaped around the pressure piece (13) is led. 30. Connector according to one or more of the preceding claims, characterized in that the shield (14) of the flat cable (6) by a Metal bracket (15) is contacted, which is attached to a housing (4, 5) of the connector is attached and rests resiliently on the shield (14). 31. Connector according to one or more of the preceding claims, characterized in that the bracket (15) is a metal bracket and the shield (14) earthed via the housing (4, 5). 32. A method for producing a connector according to one or several of the preceding claims, characterized in that during manufacture the bulge by bending the middle piece (8) around an insulating plate (11) he follows. 33. Contact element for a connector according to one or more of the preceding claims with a connecting part and thus a middle piece related connecting part, characterized in that the middle piece (8) has a bulge. 34. Contact element for a connector according to one or more of the preceding claims, characterized in that the bulge by bending is formed from preferably U-shaped. 35. Contact element for a connector according to one or more of the preceding claims, characterized in that the bulge is made by welding two lugs (25, 26) of the connecting part (30) and the connecting part (29) are formed is. 36. Use of the contact element according to one or more of the preceding Claims in a trapezoidal connector. 37. Connector according to one of the preceding claims. characterized in that the parts (3, 11, 12) by casting resin or are formed by overmolding with molding material. 38. Connector (100) for connection to a flat cable, the following the following is provided: a housing (102) and an insulating body carrying contact elements (2), characterized by strain relief means which, on the one hand, provide strain relief for the Effect flat cable (101) and on the other hand a grounding of the shield (105) of the Ensure flat cable. 39. Connector according to claim 38, characterized in that the Strain relief means are designed in the form of a spring clip (150). 40. Connector according to one of the preceding claims, characterized characterized in that the spring clip (150) consists of metal. 41. Connector according to one of: or more of the preceding ^ claims, characterized in that the spring clip (150) is essentially U-shaped and has a transverse part (112) and two legs (113, 114). 42. Connector according to one or more of the preceding claims, characterized in that the transverse part (112) has a somewhat lower screen contact part (115) and two diametrically opposed to the shield contact part (115) Has spring parts (116, 117) 43. Connector according to one or more of the preceding Claims, characterized in that the flange (150) with its legs (113, 114) contact points (119) with metal flanges (108, 109) of the connector forms. 44. Connector according to one or more of the preceding claims, characterized in that the metal flanges 108, 109 have a projection (120), bear against the lower ends of the legs (113, 114). 45. Connector according to one or more of the preceding claims, characterized in that the strain relief means are in the form of the spring clip (150) have housing contact means (152). 46. Connector according to one or more of the preceding claims, characterized in that the housing contact means (152) are springs. 47. Connector according to one or more of the preceding claims, characterized in that the housing contact means (152) are in the form of spring arms are trained. 48. Connector according to one or more of the preceding claims, characterized in that each leg (113, 114) preferably has a spring arm (152). 49. Connector according to one or more of the preceding claims, characterized in that each of the legs (113, 114) has a plurality of spring arms. 50. Connector according to one or more of the preceding claims, characterized in that the spring arms (152) with the inner housing surface Form contact points (151) for the purpose of grounding them.