DE2163340B2 - ELECTRIC PLUG CONNECTOR - Google Patents

Description

The invention relates to an electrical multi-pole plug connector according to the preamble of Claim 1.

Electrical plug-in contact connections in which the coupling parts to be connected in the axial direction be joined together so that the Steckerstiftc engage in contact sockets or contact springs and thereby producing contact points are known to the person skilled in the art in a wide variety of designs. It will in this regard in the technical article "Plug connections in electrical appliance construction" appeared in the technical Rundschau No. 9 from 1.3. 1963 pointed out.

Such plug-in contact connectors, mostly in a multi-pole design, are in very large numbers in Circuit arrangements for data processing systems, communications engineering equipment, control systems and measuring devices for the mutual connection of circuit cards or switchboards with the signal and Supply cables used. They also serve to connect the integrated circuit arrangements in building block form, the so-called module, with the circuit or distribution cards in the aforementioned Devices. Very good contact security is required for these plug connections. conditions are: First, very small contact resistances at the contact points, as the electrical voltages or Potentials in these circuits are relatively very small;

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and secondly, a shock resistance, which is also in the case of impact, vibration, acceleration or mechanical Tensile forces do not interrupt the connection.

In integrated circuit arrangements, especially the monolithic ones in which the circuits: nd die Components, e.g. B. transistors, diodes, concentrated in a semiconductor: platelet, the so-called "chip" are, these semiconductor tubes are connected to a multi-pole plug contact with a carrier plate, which is mostly made of ceramic and which has a pattern of distribution lines, mechanical and electrically connected. Or module in slightly larger dimensions that also have integrated circuit arrangements are included in a high packing density by means of contact connectors on circuit or Distribution cards attached. As with these connectors due to the miniaturization and the large If the number of connection points increases significantly, there is usually also one Increase in the forces required to! -! Create or disconnect the multi-pole plug contact connections. On the other hand, the miniaturization causes a reduction in strength by weakening the Connector pins, sockets and their attachment points in the thin carrier sheets or cards. The required plug-in or Separation force can be so great with a plug connection based on the known friction principle that there is a security problem for the sensitive, parts to be connected results.

Line additional difficulty arises with the known axial plug connections also by slightly bent Stcckerstiftc, variations in the thickness of the Connector pins or the width of the insertion openings in the sockets or by unequal pressure claws or friction conditions of the spring members. Unequal spacing of those next to each other or in the form of a grid Create connector parts, or offsets of the longitudinal axes of the parts to be connected further difficulties. Due to these deviations, additional insertion or separation forces are required and problems arise in terms of compact security and the mechanical strength of the sensitive parts. Because of this above mentioned disadvantages are in electronic circuit arrangements in which a high reliability The condition is / .. B. for the data processing equipment, such axial plug-in contact connections as possible avoided that require forces acting in the axial direction for the production or separation. Instead of this the module or the semiconductor tubes are provided with connection pins that are very close to the connector pins are similar and the circuit or distribution cards receive holes into which the connector pins plugged in and soldered. However, these soldered connections also have disadvantages, e.g. B. that They make it difficult to replace the module during the F.ndtcsts of a circuit arrangement found that a module does not meet the requirements or is defective, then the exchange is quite time consuming due to the desoldering, cleaning or drilling and re-soldering of the multipole ones Module connection. The conditions are even more unfavorable if a customer is in operation during operation Module has to be replaced due to failure.

LJm the use of multi-pole circuit cards with plug-in contacts arranged in rows are provided, in corresponding contact sockets without expenditure of force or without overcoming to enable frictional forces, as well as the separation of such a plug connection Jacks become known in which the contact springs in the jack through a jack longitudinally penetrating camshaft or an inserted pressure hose spread open be that there is a wide insertion opening.

These known plug-in sockets provided with a mechanical or hydraulic spreading device are expedient and advantageous because they protect the contact springs well and that Making or disconnecting the plug connections make it much easier. The only disadvantage is that such Jack due to the attached camshafts or other expansion means required relatively large dimensions, so that they are not for miniaturized Connectors is applicable. With plug connections, z. B. for module or semiconductor wafer in the version mentioned above, in which the connector pins as a result of their large number not only in series, but predominantly in one form Ilachenrasters are arranged · are such expandable plug-in socket!) as a result of the tight, to Available space, difficult accessibility and the tiny dimensions as well as the high production costs cannot be used.

Another simpler connector system. which is used for the contact connection of modules with posture cards. is based on that German patent 12 45 4t> 5, which is a terminal part for the Establishing a line connection concerns. As a contact spring to accommodate the ones attached to the module A U-shaped bent wire bracket is used for plug-in pins with its angled bracket part in a slot an insulating plate, - for example a .Schaltungkarte, - is used. The two legs of this Wire clips act as contact arms of a contact spring and extend parallel to the surface of the insulating plate. In one embodiment, the Provide insulating plate in the end area of the contact arms with a hole through which a pin can be inserted penetrates into the gap between the two contact arms and spreads the contact arms, whereby the electrical contact connection and the mechanical retaining connection results. This known connecting device has an extremely small overall height. however, it too is for the reasons already mentioned not fully satisfactory, since it acts in the axial direction when making and releasing the connection Forces are to be applied that are unfavorable to the affect sensitive connection points in the module. In a further embodiment the free ones protrude Ends of the contact arms over the edge of the insulating plate. A connection between the contact arms and a connector pin of a component running perpendicular to it takes place in that the connector lift transversely to its longitudinal axis between the inwardly first towards each other and then parallel Contact arms is pushed. Axial forces do not occur here, but it is in the inserted state due to the inclination of the contact arms cmc inwardly directed force on the pins transversely to their Exercised longitudinal axes.

Similar plug-in contact connections as the first

Embodiment according to DT-CS 12 45 465 with contact springs, which are arranged in pairs, opposing contact arms are provided, which are parallel to the surface of an insulating plate extend, or in other words, where the The longitudinal axis of the contact arms transversely to the Mittenachsc, or the plug-in direction of the connector pins, are in the English patent specification 12 42 283 and the Austrian patent specification 2 28 862.

Another multi-pole contact plug-in connection system in which one is provided with plug pins Formwork panel or a module (as the first coupling part) with the Konlaktfedern protruding from a surface a distributor plate (the second coupling part) can be connected in a koiitiiktweise. without inserting or removing the first coupling part, an axially acting force is required, was in the IBM Technical Disclosure Bulletin VoI 12, No. February 9 1970, p. 1394. Hey this well-known The connection system is the second coupling part acting distributor plate provided with threaded bolts, the conical openings in the first coupling part when the two coupling parts are joined together axially penetrate. When joining the two coupling parts in the axial direction, the initially Sieekerstifte a small one in the rope direction Distance to the end regions of the tongue-shaped contact springs. With conical intermediate sleeves, «Oak placed on the threaded bolts and with screws into the openings of the first coupling part pressed graze, a relative displacement of the two coupling parts to each other is achieved, whereby the The tips of the plug pins come into contact with the contact spring tongues. This contact connector system causes a protection of the contact springs and Kontaktstiftc and it guarantees a safe Contact. however it is quite expensive therefore expensive and not particularly economical for mass production.

English patent 10 00 554 discloses a multipolar electrical plug connector of the initially mentioned type for connector lifts in a first coupling part with the corresponding Contact springs can be connected, each having a pair of parallel contact arms and a second one Coupling part are arranged. In this known plug-in contact connection, or no compressive or tensile forces acting in the axial direction to separate the two coupling parts necessary. The first coupling part contains an insulating plate from the surface of which the connector pins protrude. The second coupling part contains a slightly thicker insulating plate in its top for each A cubic recess is allocated to the connector pin. In these recesses are the two opposite side walls from the bottom of the recess to about half the height with provided semicircular approaches, which also consist of insulating material and are arranged so that there is a guide channel for a connector pin in each cubic recess This guide channel, whose width at the beginning and end corresponds to the width of a recess is tapered by the semicircular shape of the two approaches to the middle hm. whereby the guide gap is slightly wider in the middle Each of the cubic depressions with the guide channel serves as a receiving device for a connector pin A leaf-shaped contact spring is inserted into each recess, which the rest of the Insulating plate penetrates and on the underside of a connection point, for. B. forms for a lead wire. on the opposite side, so the insertion side, this leaf spring is slotted so that two legs form, which are hereinafter referred to as contact arms. There is between the two contact arms a gap that extends from the ends of the contact arms narrows roughly in the shape of a funnel until it is roughly after a

ίο one third of the free arm length has a width that is slightly smaller than the thickness of a connector pin and a knuckle is formed after which the gap is again in expanded its breadth. The slotted contact spring is angled so that the two contact arms are partially rest on the semicircular guide lugs in the receiving device and the one below partially cover lying guide channel. To establish the contact connection, the Steckerstifie first by moving the first one Coupling part in the axial direction in the wide starting part of the guide channels in the recesses used, which serve as reception facilities. The two coupling parts are designed in such a way that the plug pins protruding into the receiving device are also designed their free ends do not touch the base of the guide channels or the depressions. For the production the contact connection are then the two coupling parts relative to each other in the lateral direction moved so that the connector pins slide along the guide channels and thereby the contact arms Spread the narrowest part. The final contact point after the lateral shift is with the known plug contact connector according to the Engstellc of a contact pair.

This known plug-in contact connector, which is not used to establish and separate the contact connection forces acting in the axial direction are required but are actuated by lateral displacement forces, enables the contact connection in that a connector pin is inserted between a pair of contact arms formed gap is forced, whereby he spreads the contact arms slightly, so that the two Contact arms rest on the side of the connector pin and exert a pressure force on them at two points, which the corresponds to the required contact pressure and which is so great that the resulting friction Plug pin is held mechanically in its position.

This plug-in contact connector, known from the English patent 10 00 554, is useful and advantageous for a number of plug connections, but it does not satisfactorily meet the requirements that are placed on modern plug-in connections, especially in highly integrated, sensitive circuit arrangements with regard to contact reliability, minimal space requirements and economical production Satisfactory contact security is not guaranteed since the plug pins can move further laterally up to the stop on the vertical part of the contact spring after passing the narrow point in the gap between the contact arms. The two angled and short contact arms are subjected to twisting when the pin is wedged into the gap, which means that the material can show signs of fatigue at an early stage. This contact part is relatively hard due to the short contact arms. In addition, the receptacles for the plug pins are quite large. These receiving devices, soft the cubic depressions in the

Insulating plate with the guide lugs and the guide channels take up too much space, and they are generally too expensive, so that they are not suitable for very tightly packed formwork arrangements. Is not entirely satisfactory and that in a s lateral relative displacement of the coupling parts to each other, a bending moment occurring due to the harsh terminal in the gap of the contact arms to the contact pins, which may have an adverse effect on the first coupling part.

It is the object of the invention to design an electromechanical plug contact connector according to the preamble of claim 1, in which practically no forces acting in the axial direction for establishing and separating the electrical and mechanical plug connection are required, so that an even more secure electrical contact between the plug pins and the Contact springs arise. Furthermore, devices or constructive measures should be provided which prevent large bending forces from acting on the sensitive connector silences and their connection points during the relative displacement of the coupling parts to one another in the lateral direction / 11. The new plug-in contact connector should also be designed in such a way that even bc 'limited deviations or a slight offset between the longitudinal axes of the connector pins to be connected to each other and contacts'.' Rn joining of the two coupling cables is possible without the connector pins or contact springs being inadmissible are heavily stressed and that these deviations in the spacing or grid dimensions in the contact or the connection position are balanced and that a good, reliable contact connection results even under unfavorable conditions. Further demands on the new plug-in contact connector, in particular on its contact springs, are that they can be produced in the smallest dimensions with little effort and in mass production and are suitable for use in miniaturized circuit arrangements and that they also provide a reliable contact when the connection is inserted or disconnected several times and ensure mechanical hold at all connection points.

This object is achieved according to the invention by what is stated in the characterizing part of claim 1 Features solved.

Such a plug contact connector has various advantages compared to the known plug contact connectors, in particular according to the English patent 10 00 554. For example, his place or The space requirement for the contact springs is significantly lower, since the receiving device for a plug pin forms the insertion opening of the sleeve-shaped contact spring and is thus included in the contact element the known connector with recesses and guide lugs ⁶ Q must be provided. Extensions of the jacket of the sleeve-shaped contact spring, which lie opposite one another and approach one another in a wedge-shaped manner and thus serve as guides for a connector pin, serve as contact arms. Only small bending forces act on these resilient contact arms when the plug pin is pushed in, so that the spring material is not excessively stressed hold the connector pin securely over the end range. The new plug-in contact connector can be manufactured economically due to its simpler construction and is well suited for mass production. A major advantage is that it allows a more compact construction of Sehaltungsan thanks to its smaller dimensions.

Advantageous refinements of the plug contact connector according to the invention are set out in the subclaims specified.

Even though such electrical connectors, as already mentioned above, are practically only multi-pole This is how it is used, and in particular its advantages come into play here It is conceivable that single-pole connectors in the above-described Way to be trained.

Exemplary embodiments of the invention are described in more detail below with reference to drawings. From the drawings represents

Fig. 1 is a partially cut-away side view of a plug contact connection between a Plug pins provided module as the first coupling part and a circuit card as the second coupling part. The drawing shows the coupling parts in a first position in which the two coupling parts are only in an axial position Direction are joined together and the connector pins protrude into the wide insertion openings of the spring sleeve,

1A in a greatly enlarged illustration Detail of the second coupling part according to FIG. 1, relating to a circuit card with an inserted hollow cylindrical contact spring with one from the insulating plate protruding socket part, which serves as a receiving device, in which a plug pin without contact enters,

Fig. 2 is a partially cut-away side view: of the plug contact connector according to FIG. 1 in a second position, which corresponds to the contact position, in that the connector pins and the arms of the contact springs are in contact engagement,

F i g. 2A shows a greatly enlarged illustration of a section of the circuit card in the second coupling part according to FIG. 2 with an inserted sleeve-shaped contact spring, the pair of contact arms in the end area is spread open by a plug pin inserted at the side,

F i g. 3A, 3B, 3C in a greatly enlarged schematic illustration a plan view of the detail of a Male connector to show the positions of the male pin and contact arms in different states. The Fi g. 3A shows a first position at which the two coupling parts are joined together in the axial direction. Fig.3B shows a second Position in which the laterally displaced plug pin is in contact-wise engagement between the end regions The lower figure F i g. 3C shows the states that exist in the two The aforementioned positions result when the connector pin and the sleeve-shaped contact spring provided with contact arms are not precisely aligned with one another and there is a deviation or offset of the longitudinal axes,

4 shows a section and perspective View of a modified module with connector pins as the first coupling part, with the connector pins

between the contact arms of the sleeve-shaped Konlaktfedern A circuit card equipped with it, which together with the contact springs intervene forms the second coupling part,

able. 4B in greatly enlarged and perspective Illustration of the upper part of another embodiment of the contact arms of a sleeve-shaped contact spring.

Module 10, referred to as the first coupling part of the plug-in contact connection, which serves as a circuit component and carrier for integrated electrical components, is particularly suitable, as in the drawings made on an enlarged scale. 1 show on its underside provided with a number of mutually parallel sealing rings II . The protruding from the surface 12 Sleckcrsiiftc Il having mutually a certain Absiandsmaß are preferably in R> rm arranged a grid. After the coupling parts have been joined together, these Steekerstille II are inserted in a first position into the wide IJIIsIeCkOfIiHiIIgCn of a hollow-cylindrical Konlakl spring 20 arranged in a circuit card 13 or a similar distribution plate. The contact leathers 20 have the same spacing or the same grid arrangement as the connector pins 11. The circuit board 13 and the contact spring located in it!) 20 are referred to as the second coupling part of the plug contact connection.

After the two coupling devices have been joined in the axial direction, or the module 10 with the .Schaltungkarle I ^, the connector is in a first position in which the .Steckerstifte 11 protrude into the wide insertion opening serving as a sleeve-shaped contact spring 20 . Then the two mutually sliding coupling parts are shifted relative to one another transversely to the longitudinal axis of the connector pins 11 into a second position. The shift takes place in such a way that the module 10 and the circuit card i3 move relative to one another laterally in the direction of the gap in the contact arms 22, as a result of which the plug pins II are pushed between the gaps in the contact arms 22 and spread them open in their hands, so that a self-locking contact connection between the .Steckerstifte 11 and the contact springs 20 results.

The contact springs 20 have on their upper part a wide insertion opening 24 into which the plug pins 13 can be inserted without a particularly large pressure force acting in the axial direction being required for this purpose. In this first position, the material of the loosely assembled coupling parts, especially the contact springs and connector pins and their connection points, is not stressed by forces acting in the axial direction. In addition, no contact connections are made in this first position in which the plug pins 11 protrude into the wide receiving devices. Only after executing a relative displacement movement of the two coupling parts to be connected, in which they are brought into a second, so-called contact or connection position, are the plug pins 11 m contact-like engagement with the contact arms 22 ier sleeve-shaped contact spring 20 Frictional forces lock Ier connector pins 11 in their end position. The relative / sliding movement of the two coupling parts to one another from the first, the so-called receiving position, to the second, the so-called contact or binding position, occurs mainly by moving the module 10 laterally on the circuit card 13.

The contact springs 20 are preferably made of: beryllium copper and they are made of a piece of sheet metal cylindrical spring sleeves 21 shaped, as shown di (Fig. IA. The circuit board 13 is with irr Bores arranged in a grid dimension are provided in which the spring sleeves 21 of the contact springs 2C are used. These spring sleeves 21 penetrate the

ίο made of insulating material circuit board 1.3 and protrude from their underside, where they connect points, ζ. B. form for lines. The spring sleeves 21 and Contact arms 22 of the contact springs 20 are also on the surface of the .Schaltungkarte 13, the The protruding part delimits the insertion opening 14, which the receiving device for the plug pins 11 forms when joining the coupling parts. The spring sleeves 21 are split in the longitudinal direction and they point above the surface 14 of the circuit card

13 in the coat a cross section on the transverse to the The longitudinal axis of the spring sleeve 21 runs and extends approximately to the center of the spring sleeve 21. Above the Cross incision up to the upper hands of the spring sleeve 21 is the wall surface or jacket 23 extended, these extensions from the two end points of the Transverse incision go out. These two strip-shaped Extensions of the lateral surface 23 form two resilient contact arms 22 lying opposite one another which both extend in the same direction. the

End points of the transverse incision j _m jacket 23 of the spring sleeve 21 serve as shoulders or base points of the two contact arms 22. The width of the strip-shaped contact arms 22, which extends in the axial direction of the spring sleeve 21, is an extension of the jacket surface 23 of a spring sleeve 21. The Aufnahniccinrichtung the spring sleeve 21 of a Kontaktlcder 20 has on its upper side, or on its insertion side 24, a clear opening that is wider than the diameter of a plug pin 11 to enable a plug pin 11 to be inserted if there is a deviation in the longitudinal axes between the connector pin IiA to be connected and the spring sleeve 21 of a contact spring 20, as can be seen from the enlarged illustration of FIG. 3A to 3C can be seen

is. As a result of the paired arrangement of the contact arms 22 opposite one another at a distance and the large insertion opening 24 of the spring sleeve 21 provided as a receiving device, a plug pin 11 can be inserted into this insertion opening 24

without a force acting in the axial direction being required.

After inserting the connector pins 11 into the insertion openings 24 of the sleeve-shaped contact springs 20, it is necessary to make the electrical contact and the mechanical retaining connection between the connector pins 11, and the contact springs 20 and the to produce both coupling parts, so that both coupling parts, or, to put it more specifically, the Connector pins 11 and the contact springs 20 contactmä- Big mesh and also a mechanical one There is a locking connection. To meet this requirement, the two contact arms 22 of a contact spring 20, which extend from the insertion opening 24 delimiting wall 23 of the spring sleeve 21 sideways in

⁶ S extend in the same direction, designed so that they approach their end regions 25, 26 approximately in the shape of a wedge. As a result, the insertion opening 24 in the contact spring 20, or the receiving device in the lateral

Extended direction, so that there is a guide path in which a connector lift II can be moved laterally. As shown in FIGS. Is "seen 3Λ to 3 (., The paired resilient contact arms 22 are bent to each other so as to approach steadily and thereby enclose a wedge-shaped Avenge. At rest, the end portions approaching 25 26 of the contact arms 22 from the Knickstellcn 2.5 / 4. 25ß to a distance 27 which is smaller than the diameter of a connector 11. The two contact arms 22 are angled slightly outwards at iIl-h knicksiellcii 25Λ 25 /? So that I ^: nd serving as contact pieces are reached 25 and 26, which are parallel to one another and in the rest state have an offset from one another which is smaller than the diameter of a plug pin 11. is

As from the I 'ι g. 3A and SB / n. a sleckersiift II, which is initially inserted into the insertion opening 24 di: v contact spring 20, is then pushed in a lateral direction to the right to the end regions 25, 26 of the contact arms 22 in order to establish the contact connection. This relative lateral displacement of the .Steckerslille 11 comes into engagement with the peripheral regions 25, 2b of the contact arms 22 of the contact spring 20, causing the two end regions 25, 26 of the contact arms 22 to spread apart. In this impaled state, the two end pieces 25, 26 of the two contact arms 22 rest laterally on the Sieckerstift II and as a result of their bending stress they exert a compressive force on this. which forms the contact pressure and also the general force. This pressure force generated by the two contact arms 22 is selected in this case in such a way that the connector pin 11 inserted between the two end pieces 25, 26 is locked in its position Characteristics indicate that the two end pieces 25, 26 resting laterally on the plug pin 11 form two mutually opposite contact points on the plug pin 11.

I In to prevent that the dt: r Einstcckstcllung in the contact or Verbindungssiellung moving Sieckerstift 11 w laterally by a reaction force is ieder pushed back from this end position toward the inserted position, are, as already mentioned above, the end pieces 25, 26 the opposing contact arms 22 designed so that the connector pin 11 is securely held in this end position. This is done, for example, in that at least one contact arm 22 is provided with a shaped end region 25, 26, this having a concave bend or some other shape which forms a secure bearing for the plug pin 11. In this exemplary embodiment, as already mentioned above and as shown in FIGS. 3A to 3B show the end regions 25, 26 designed so that they are at least parallel to one another when the plug pin 11 is inserted, so that no component of a possible restoring force can form. The required curvature or the bearing surface for securely receiving the plug pin 11 in the contact or connection position is obtained, for example, as shown in FIGS. 3A to 3C can be seen through a bend 25A, 25B in the end regions 25, 26 of the two contact arms 22, which results in the two contact pieces for the electrical connection.

If there is a risk that the plug pins 11 or the entire plug connection will be heavily oxidized or soiled, additional measures can be taken preventively to increase the contact reliability, which prevent this harmful influence and ensure good contact even under unfavorable conditions. As a preventive measure, for example, at least one contact arm 29 of the contact spring 20A can be provided with a pressed, wedge-shaped rib 28 pointing towards the contact surface, as shown in FIG. 4B. This rib 28 has the effect that there is a higher specific contact pressure at the contact point. The F i g. 4B shows the upper part of a sleeve-shaped contact spring 204, in which the two contact arms 2 <) are each provided with a wedge-shaped rib 28. Due to the high contact pressure and the rib edges resting on the surface of the plug pin 11, the disruptive oxide or dirt layer is pierced and the required low contact transition resistance is achieved

As from the I-ig. I, IA, 2 and 2A, the contact arms 22 of the contact spring 20 are at a small distance from the surface 14 of the circuit board, or an insulating plate Π. This distance is a safety measure and serves to ensure that the .Steckerslifte 11 inserted into the insertion opening 24 does not damage the surface 14 tier. In addition, the ends of the connector pins 11 resting on the surface 14 are intended to prevent braking forces from occurring, which hinder the lateral displacement and make it difficult for the connector pins 11 to engage in the end areas 25, 26 of the contact arms 22 and also to prevent any additional forces acting on the Sieckcrstifte 11 Bending forces or bending moments result.

In order to prevent these uncertainties and to ensure a smooth relative movement of the two coupling parts To enable one another are to do something gen provided that ensure that the ends 15 of the Connector pin 11 does not touch surface 14 of the circuit board 13 touch. As shown in FIGS. 1 and 2 can be seen is between the bottom of the module 10 and the Surface area 14 of the circuit board 13 a Intermediate plate made of insulating material as a spacer 31 arranged. This spacer 31 consists of an outer support frame 30 and a flat one somewhat thinner base plate 32, which is provided with a recess 33 on its upper side facing the module 10 is provided, in which the base of the connector pins 11 protrude. The bottom plate 32 is corresponding to The grid of the plug pins 11 protruding from the module 10 are perforated and these holes 34 are each penetrated by the connector pins 11. As shown in FIGS. 1 and 2, holes are 34 in the base plate 32 on the side facing the module 10 expanded in a funnel shape to allow the insertion of the Plug pins 11 into the holes 34 of the spacer plate 31 to facilitate. Along at least two sides of the outer frame 30 of spacer 31 are two ribs 36, through their height a cavity between the underside of the bottom plate 32 and the surface 14 of the circuit board 13 is created The height of the support frame 30 is selected so that when the module 10 is on the spacer 31 rests, the ends 15 of the connector pins 11 do not touch the surface 14 of the circuit card 13.

With the above interposed between the module 10 and the circuit card 13

Spacer 31 there is also the advantage that in the module 10, which is provided with long connector pins 11 is provided, the bending is prevented when a lateral displacement of the two coupling parts the connector pins 11 are pushed into the end regions 25, 26 of the contact arms 22 for engagement will. This spacer 31 can, as mentioned above, be a separate component that is free is movable to the module 10 or to the circuit carie 13, or it can also be a fixed to the module 10 or the circuit board 13 may be an integrally formed component and belong to one of the two coupling parts.

The most important function of the spacer 31 is that it reliably prevents the lateral Moving the connector pins 11 from the receiving device in the connection position or vice versa, the ends 15 of the connector pins 11 the surface 14 of the Touch circuit board 13.

If a module 10, 4 is provided with short connector pins, in which only a relatively small bending moment occurs during the lateral displacement into the connection position, or if the module 10 has long and strong connector pins 11, then spacers 31 can also be attached to the module 10A or protruding ribs 37 molded onto the circuit block 13.4, as shown in FIG. 4A. In this simplified embodiment of the spacer 31, at least two spacer ribs 37 are required, the height of which is selected so that they prevent the ends 15 of the connector pins 11 from touching the surface 14 of the circuit card 13.

In the plug contact connector described above, there are deviations in the distance or the grid dimension from the nominal value of the coupling parts to be connected to one another within relatively large limits, i.e. if the axes of the plug pins 11 are not congruent with the axes of the sleeve-shaped contact springs 20, or if there is a slight bending a plug pin 11 is present, then the desired contact plug connection can still be established through this deviation from the nominal value and the contact reliability is not impaired. Such a deviation is, as shown in FIG. 3C can be seen, automatically balanced by the contact spring 20. 3C shows a case of a deviation in which the axis of the plug pin 11/4, shown in broken lines, is offset laterally downward with respect to the longitudinal axis of the spring sleeve 21 of the contact spring 20. The plug pin 11/4 inserted into the receiving device or plug-in opening 24 is thus eccentrically within the large plug-in opening 24 of the contact spring 20. If this plug pin 11 is pushed laterally to the right into the connection position (second position) from the plug-in position (first position), so that If, as FIG. 3C shows, it comes into engagement between the end regions 25, 26 of the two contact arms 22, then one contact arm 22 in this example, the lower one, is deflected or spread apart further from the central axis than the other above it. The joining of the two coupling parts to produce the contact connection between the plug pins 11 in the first coupling part and the contact springs 20 in the second coupling part, as well as the separation of such a plug contact connection can either be done manually or with the help of a special tool, if a larger number of plug connections are to be established or separated.

1 sheet of drawings

Claims (7)

Patent claims: 1. Electrical multipolar plug contact connector, formed from a first, parallel plug pins having coupling part and a second coupling part, consisting of an insulating plate with inserted in this self-retaining in the grid dimension of the connector pins and penetrating this plate one-piece contact springs which form connections on the underside of the plate and which are on the Plug-in side protrude from the corresponding top side of the plate and parallel to this with white the shoulders of the Kontak'federn extending in the same direction, with a tapering distance opposing resilient contact arms are provided between their end regions have a gap which is smaller than the thickness of the connector pins, wherein the second coupling part also contains an associated receiving device for each contact spring, in which to Establish the contact connection first of all the connector lifts in the axial direction without any effort can be used, whereupon by a subsequent relative displacement of the coupling parts in the direction the contact arms the connector pins, the free ends of the surface of the insulating plate of the second Do not touch the coupling part in the crevices get between the contact arms, spreading the same and thereby also mechanically are held, characterized by that each contact spring (20) consists of a longitudinally slotted tubular Fedcrhülsc (21) which is inserted into a hole in the insulating plate (13) is inserted and in the lower region of the upper part protruding from the insulating plate (13) in its jacket (23) has a transverse cut that defines the shoulders of the contact arms (22), between the and the upper end of the spring sleeve (21) the two contact arms (22) are elongated Jacket surfaces extend laterally that as a recording device the upper sleeve part is provided for the plug pin (11), its clear insertion opening (24) is wider than the cross section of a connector lift (11), and that the two contact arms (22) are bent in their free end region (25, 26) in such a way that when the plug pin (U) is inserted, the spread contact arms (22) run parallel to one another from the bend (25 A. 25ÖJbis to their free end. 2. Plug contact connector according to claim 1, characterized in that at least one of the End areas (25, 26) of the contact arms (22) are concave to the shape of the connector pin (11) has adapted curvature. 3. Plug contact connector according to one of claims 1 or 2, characterized in that of the two contact arms (22) of a contact spring (20A) at least one has an end region (29) which is provided with a wedge-shaped contact rib (28) pointing towards the contact point, which extends in the same direction as the contact arms (22) (Fig. 4B). 4. plug contact connector according to claim 1, characterized in that the first and / or in as is known, the second coupling part is provided with a spacer (31, 37). the so is designed that the ends (15) of the plug pins (11) inserted into the second coupling part over the displacement distance from the insertion opening (24) to the ends of the contact arms (25, 26, 29) the Do not touch the surface (14) of the insulating plate (13) (Fig. 1,4A). 5. Plug contact connector according to claim 4, characterized in that the spacer (31) one arranged between the first and second coupling parts and on the surface (14) the insulating plate (13) of the second coupling part in the direction of the contact arms (22) is slidable insulating intermediate plate, which with a Frame (30) is provided, the protruding strips of which rest on the insulating plate (13) and a have such a height that the underside of the intermediate plate is at a small distance above the Contact springs (20) is located and that the intermediate plate is penetrated by the connector pins (11) Has holes (34) (Fig. 1 and 2). 6. Plug contact connector according to claim 4, characterized in that the spacer (31) on the first coupling part (10Λ) at least two spacer ribs (37) sliding on the insulating plate (13) are arranged, between which the connector pins (11) or the contact springs (20) are and that the height of these spacer ribs (37) is greater than the free length of the connector pins (11) and the free Height of the contact springs (20) protruding from the top (14) of the insulating plate (13) (FIG. 4A). 7. Plug contact connector according to one of claims 1 to 6, wherein the first coupling part is a Is a component with connector pins protruding from the underside, characterized in that the first coupling part is a module (10) and the second coupling part is a Circuit card is. in which the lower edges of the contact arms (22) the surface (14) of the insulating plate (13) do not touch.