PCB interface

Description

[0001] The invention relates to an interface for electrically contacting a printed circuit board. The invention particularly relates to an interface intended for contacting by means of an electrical connector with a suitable printed circuit board contact. The invention also particularly relates to such an interface suitable for a power connector.

[0002] Such interfaces are particularly required in device connection technology, where reliable electrical contacting of a printed circuit board by means of a connector via the interface over many mating cycles is desirable. Stand der Technik

[0003] Such an interface is known, for example, from DE 20 2010 003 457 U1, which is provided by means of a printed circuit board connector with a connector housing and at least one contact element. The contact elements are designed, in particular, as contact pins for electrical connection to a contact point on a printed circuit board. The printed circuit board connector is a coaxial connector having an inner conductor and an outer conductor, which are electrically connected to the contact elements designed as contact pins and for electrical connection to corresponding terminals on a printed circuit board.

[0004] To do this, the contact pins engage in corresponding recesses in the circuit board and are electrically and mechanically connected to the circuit board, for example, by soldering, thus establishing an electrical connection between the inner and outer conductors and an electrical circuit on the circuit board. At the same time, the contact pins also serve to mechanically connect the PCB connector to the circuit board, securing and supporting the connector housing on the circuit board.

[0005] When the printed circuit board connector is actuated using a mating connector, there is therefore a risk of undesired transmission of plugging and unplugging forces via the contact pins to the printed circuit board, which can be damaged, particularly during repeated plugging operations.

[0006] GB 2 337 369 A discloses a signal connector for circuit boards of a cable TV multi-tap, via which a first and second circuit board are connected. The signal connector comprises a first connector on the first circuit board, a second connector on the second circuit board, and a base connector. The base connector has connecting portions suitable for connection to the first and second connectors and is mounted on a seat. The signal connector maintains the quality of the transmitted signal (which may be a telephone signal), and the circuit boards can be easily removed for repair.

[0007] US 6,261,107 B1 discloses a connector for contacting a printed circuit board, in which short circuits between adjacent contact portions are avoided while maintaining a multi-pole structure with a reduced spacing of solder tail portions of the terminals. The connector comprises an insulating connector housing with a slot for a mating connector having a plurality of terminals. The terminals have contact portions accessible via the slot and arranged in parallel at a predetermined spacing. The solder tail portions of the terminals extend below the contact portions of the terminals and are arranged in parallel at a spacing that is half the spacing of the contact portions.

[0008] DE 10 2007 039 064 A1 discloses an electronic device comprising a housing, a printed circuit board, and a socket for connecting a plug arranged in an opening in the housing. The electronic device is a control device, for example for a pump, which interacts with a sensor connected to the device via the socket. Depending on the type of sensor to be connected, the socket has two, three, or four contact elements, the first ends of which each serve to receive a mating contact element of the plug, which is connected to the sensor to be connected via a cable. The second ends of the contact elements are electrically connected to the printed circuit board via a plug strip, wherein the plug strip has a corresponding number of connection pins arranged in a contact carrier made of insulating material.

[0009] In the priority application for the present application, the German Patent and Trademark Office searched the following prior art in addition to the above-cited DE 10 2007 039 064 A1: DE 20 2010 003 457 U1 and WO 2018 / 092068 A1. Task

[0010] The object of the invention is to provide a reliable interface for electrically contacting a printed circuit board, which is also suitable for contacting a power connector with the printed circuit board. The object is, in particular, to provide such a protruding interface that is suitable for preventing or at least partially reducing the effect of insertion and / or removal forces on the printed circuit board. The object of the invention also relates, in particular, to providing a printed circuit board contact suitable for a protruding interface.

[0011] The problem is solved by the features of independent claim 1.

[0012] Advantageous embodiments of the invention are specified in the subclaims and / or the following description.

[0013] The invention particularly relates to an interface for electrically contacting a printed circuit board housed in a housing, wherein the interface is designed as a double-sided and / or two-part interface by means of a first and second interface. Due to the above double-sided and / or two-part design according to the invention, part of the interface can be fastened to the housing and thus, when contacting the interface from outside the housing, in particular by means of a plug-in connector, can absorb all of the insertion and removal forces occurring when contacting the interface and / or when releasing contact from the interface, while the printed circuit board is advantageously not stressed.

[0014] A protruding double-sided and / or two-part interface is therefore particularly reliable and suitable for a desirable high number of mating cycles.

[0015] The first interface of the double-sided and / or two-part interface has at least one first contact element as a circuit board contact for electrical contact with at least one terminal of the circuit board.

[0016] The second interface of the double-sided and / or two-part interface suitably has at least one second contact element and is designed to correspond to the first interface and to be arranged and / or fixed to an opening of the housing in such a way that the first and second contact elements are brought into contact with one another, and the second contact element provides a connection that can be contacted from outside the housing.

[0017] The second interface is provided by a second insulating body, which is configured to form a positive fit with the opening of the housing and in which the second contact element is fixedly housed such that one end of the second contact element extends into the interior of the housing and one end of the second contact element provides the connection that can be contacted from outside the housing. The second insulating body is configured and / or arranged on the housing in such a way and / or has an inner contour that interacts positively with a contour of the second contact element such that plugging and / or unplugging forces acting on the connection that can be contacted from outside the housing are absorbed by the second insulating body of the second interface and / or the housing.

[0018] By means of the combination and interaction of the first interface and the second interface with the features described above, a double-sided and / or two-part interface according to the invention is provided which has the advantages described above.

[0019] Suitably, the first contact element of the first interface is arranged and designed to correspond to the second contact element of the second interface, wherein the first contact element advantageously has a socket and the second contact element is designed at least on the inside of the housing as a pin contact with a pin, and wherein the pin contact is inserted into the socket.

[0020] The socket of the first contact element and the pin contact of the second contact element can advantageously be arranged and configured in such a way that, by means of the pin contact interacting with the socket, more than one contact point can be provided between the first and second contact elements. This advantageously creates the possibility of designing the double-sided and / or two-part interface with particularly low resistance. Suitably, the pin contact of the second contact element has a predetermined oversize relative to the socket of the first contact element.

[0021] A first contact element having a protruding socket is provided by a stamped and bent contact, which has a flat central portion and a bent portion adjoining the central portion, by means of which the socket is formed. Stamped and bent contacts can be easily and cost-effectively manufactured in series, and especially in small batches.

[0022] For electrical contact with the circuit board, the first contact element has at least one foot, which is provided for connection to a terminal of the circuit board. The foot, like the socket described above, is formed on the flat central portion of the first contact element.

[0023] The foot can advantageously engage in a connection of the circuit board formed as a recess in the circuit board and can be soldered and / or pressed to the connection of the circuit board, so that a reliable electrical contact of the first contact element with the connection of the circuit board is provided.

[0024] The foot also extends in a first direction on a first side of the central section of the first contact element, and the socket can extend on a second side of the central section with its axis parallel to the first direction. Particularly advantageously, the second side on which the socket is formed can also be the side of the central section opposite the first side, so that the socket can be arranged with its axis perpendicular to the first direction. It is clear that the socket provided for contacting the second contact element of the second interface is arranged adjacent to the opening in the housing and faces the opening. Suitably, the first interface is arranged on an edge of the printed circuit board.

[0025] By virtue of the above arrangement of the socket with its axis perpendicular to the first direction in which the foot extends, the first interface is advantageously implemented as an interface by means of the first contact element formed in this way, which provides contact with the circuit board and can be plugged onto the circuit board at a 90° angle, whereas the socket can be plugged parallel to the circuit board. The first contact element of the first interface thereby provides an advantageous change in the direction of its contact directions by an angle of 90°.

[0026] Furthermore, for many applications it is desirable to accommodate a printed circuit board at the bottom of a housing, while openings in the housing for connections from outside the housing are desirable, suitably on a side wall of the housing. For particularly simple assembly of the first interface already mounted on the printed circuit board, the first interface is suitably designed and arranged on an edge of the printed circuit board such that the first interface can only extend beyond the edge of the printed circuit board by a predetermined small amount, so that the printed circuit board with the first interface already mounted on it as intended can be inserted into a housing that is open at the top without tilting and / or inclining the printed circuit board.

[0027] The first contact element can furthermore be at least partially accommodated in a first insulating body, wherein the first insulating body can have a suitable rail-like fixing contour for this purpose, which cooperates positively with, for example, and advantageously, a shoulder of the first contact element, wherein the shoulder can be suitably formed on the central portion of the first contact element adjacent to the socket.

[0028] When the first insulating body is provided with the first contact element accommodated therein, the first contact element can be mounted particularly easily on the circuit board after its simple insertion into the rail-like fixing contour of the first insulating body. Furthermore, when more than one first contact element is provided to provide a first interface with more than one connection, a predetermined number of first contact elements can be provided, suitably arranged parallel to one another and in a row following one another. In this case, a corresponding predetermined number of fixing contours, which are formed in a form-fitting manner with the first contact elements, are suitably formed in the first insulating body.

[0029] With a first interface configured in this way, the first insulating body can advantageously lengthen the clearance and creepage distances in the first interface. Furthermore, the first insulating body is particularly advantageous as an assembly aid, particularly with a first interface having a plurality of first contact elements as described above. Furthermore, the first insulating body imparts desirable stability to the first interface, and for this purpose, the first insulating body can also have locking elements for locking to the circuit board.

[0030] A first contact element of the first interface may also have more than one foot for contacting a terminal of the printed circuit board, wherein the feet may suitably have a predetermined small dimension and may be arranged and configured at a predetermined distance from one another in such a way that current transfer of the first contact element is realized via a plurality of small terminals.

[0031] This measure advantageously creates the possibility of requiring and / or generating less effort and / or temperature during soldering when assembling the first contact element. Furthermore, this measure can minimize heat development due to current flow through the first contact element. Such a protruding first contact element with a predetermined number of feet is therefore particularly advantageously suited for transmitting high currents in the range of 50 A. It is clear that a first contact element suitable for this purpose can also be suitably designed with regard to its material and / or material thickness and / or configuration.

[0032] The initially mentioned second interface of the double-sided and / or two-part interface is provided by means of the second insulating body, which is formed in a form-fitting manner with the opening of the housing and in which the second contact element is accommodated in a stationary manner such that one end of the second contact element extends into the interior of the housing for contacting the first contact element and one end of the contact element provides the initially mentioned connection accessible from outside the housing.

[0033] The second contact element can suitably have a contour that interacts positively with an inner contour formed in the second insulating body such that the second contact element is held in the second insulating body such that when plugging and / or pulling forces act on the protruding connection provided from the outside by means of the second contact element, the plugging and pulling forces are transmitted completely to the second insulating body and / or via the second insulating body to the housing. The second insulating body, which is intended to be arranged at the opening in the housing, is suitably screwed to the housing and formed from a suitable plastic and, moreover, has suitable dimensions for this purpose, in particular its thickness.

[0034] In order to compensate for tolerances for a proper contacting of the second interface with the first interface already arranged inside the housing, the opening corresponding in a form-fitting manner to the second insulating body and, in particular, bores formed in the insulating body for fastening the insulating body can have a predetermined oversize.

[0035] A second interface suitable for a double-sided and / or two-part interface described above can be configured on the outside of the housing, particularly for connecting a plug-in connector. The plug-in connector can have at least one contact element configured to correspond to the second contact element for connection to the connection described above, which is provided by the second contact element and can be contacted from outside the housing.

[0036] A second contact element suitable for the second interface described above, which in particular also cooperates as intended with the first contact element having a socket described above, can be suitably provided by means of a rotary contact designed as a pin contact on at least one side.

[0037] As described above, a first interface may have a predetermined plurality of first contact elements, wherein a suitable second interface configured to correspond to the first interface may have a corresponding number of second contact elements.

[0038] In particular, a double-sided and / or two-part interface described above can have a first interface with a plurality of first contact elements and / or a second interface with a plurality of second contact elements, wherein the first contact elements and / or the second contact elements can each be arranged at a predetermined distance from one another, and wherein the first and / or second contact elements can each be arranged parallel to one another. In this way, a double-sided and / or two-part interface can be easily designed to be optimized for many applications.

[0039] A double-sided and / or two-part interface can be designed in particular to be suitable for connecting a power connection connector, wherein the interface can have three mutually corresponding first and second contact elements for connecting a phase, an N conductor and a PE conductor and / or the interface can have five mutually corresponding first and second contact elements for connecting three phases, an N conductor and a PE conductor.

[0040] Above, a first contact element particularly suitable for the first interface has been described in detail, by means of which, as also described above, a printed circuit board contact with a multitude of advantages is provided.

[0041] As described above, the printed circuit board contact is suitably designed as a stamped and bent contact with a flat central portion. At least one foot extends in a first direction on a first side of the central portion, wherein the foot is provided for connection to a terminal of the printed circuit board.

[0042] On a second side of the central portion, as also described above, a socket with an axis is formed by means of a bend of the stamped and bent contact, which is intended for connection to a pin contact.

[0043] The punched-bent contact is suitably designed such that a contact element described above of the first interface of a double-sided and / or two-part interface according to the invention is provided by means of the punched-bent contact.

[0044] Further details of the particularly simple assembly of a double-sided and / or two-part interface according to the invention can be found in the description of the following exemplary embodiment. Ausführungsbeispiel

[0045] An embodiment of the invention is illustrated in the drawings and explained in more detail below. They show: Fig. 1A is a perspective view of a printed circuit board contact suitable for a first interface according to an embodiment of the invention; Fig. 1B shows a punched blank of the printed circuit board contact of Fig. 1A ; Fig. 2Aden circuit board contact of Fig. 1A together with an insulating body suitable for the printed circuit board contact according to an embodiment of the invention; Fig. 2B the printed circuit board contact is housed in the insulating body; Fig. 2C the insulating body with three printed circuit board contacts housed therein, so that a first interface according to an embodiment of the invention is provided; Fig. 3A the first interface of Fig. 2C together with a printed circuit board; Fig. 3B the first interface mounted on the printed circuit board; Fig. 4A the printed circuit board equipped with the first interface of Fig. 3B together with a housing; Fig. 4B the housing with the printed circuit board accommodated therein and provided with the first interface together with three contact elements of a second interface according to an embodiment of the invention; Fig. 5A the housing and the contact elements of Fig. 4B together with an insulating body for accommodating the contact elements of the second interface; Fig. 5B the contact elements of the second interface are accommodated in the insulating body, so that the second interface is provided; Fig. 6A the housing of Fig. 5A with the second interface mounted on the housing and the first interface, wherein a double-sided and / or two-part interface is provided according to an embodiment of the invention; Fig. 6B the double-sided interface of Fig. 6A in a partially transparent representation; Fig. 7A the double-sided interface of Fig. 6A in an enlarged view from a different perspective; and Fig. 7Legs with three contact elements, which is connected to the double-sided interface.

[0046] The figures contain partially simplified, schematic representations. In some cases, identical reference symbols are used for identical, but possibly not identical, elements. Different views of identical elements may be scaled differently.

[0047] Fig. 1A shows a perspective view of a device for a device described below with reference to Fig. 2A, 2B und 2C described first interface 1 according to an embodiment of the invention suitable printed circuit board contact 10, and Fig. 1B shows a stamped metal blank of the printed circuit board contact 10 of Fig. 1A By means of the printed circuit board contact 10, a first contact element 10 of a first interface 1, as described above, is provided according to one embodiment of the invention. The blank of the printed circuit board contact 10 has a predetermined thickness and a central portion 100.

[0048] On a first side of the central portion 100, spaced apart feet 13 extend in a first direction R, and on a second side of the central portion 100 opposite the first side, a portion of the printed circuit board contact 10 extends, which portion is bent into a socket 12. The axis A of the socket 12 is arranged perpendicular to the first direction R. The central portion 100 suitably has a height that corresponds to an opening 40 formed on a wall of a housing 4.

[0049] The feet 13 are provided for contacting terminals 30 of a printed circuit board 3 corresponding to the feet 13 and are suitably designed and arranged accordingly. The socket 12 is provided for contacting a second contact element 20 of a second interface 2, as described above, and is suitably designed and arranged accordingly.

[0050] The edge of the opening of the socket 12 intended for the insertion of a contact pin 22 of a second contact element 20 suitably has a bevel, so that an insertion funnel is provided for easy insertion of the contact pin 22. Furthermore, the edge of the opening of the socket 12 intended for the insertion of a contact pin 22 has slot-shaped recesses for the same purpose, after which the edge has increased ductility compared to the further extension of the socket 12.

[0051] Fig. 2A shows the circuit board contact 10 of Fig. 1A together with an insulating body 11 suitable for the printed circuit board contact 10 according to an embodiment of the invention, Fig. 2B shows the printed circuit board contact 10 housed in the insulating body 11, and Fig. 2C shows the insulating body 11 with three printed circuit board contacts 10 housed therein, so that a first interface 1 according to one embodiment of the invention is provided. The insulating body 11 of Fig. 1C, designed for three printed circuit board contacts 10, is fully populated with three printed circuit board contacts 10. The printed circuit board contacts 10 are suitably arranged, in particular, with the axes A of their sockets 12 parallel to one another, with the sockets 12 aligned in one direction.

[0052] The insulating body 11 provides the first interface 1 with desirable stability, and the insulating body 11 advantageously allows air and creepage distances in the first interface 1 to be extended. Furthermore, the insulating body 11 simplifies the assembly of the first interface 1 on a printed circuit board 3. To accommodate the printed circuit board contacts 10, the insulating body 11 has three rail-like fixing contours 110, each of which interacts in a form-fitting manner with a shoulder of the printed circuit board contacts 10 formed adjacent to the socket 12.

[0053] By means of the insulating body 11 completely equipped with three printed circuit board contacts 10, a first interface 1 according to an embodiment of the invention is provided, which is ready for its mounting in its intended position on the edge of a printed circuit board 3.

[0054] Fig. 3A shows the first interface 1 of Fig. 2C together with a circuit board 3, and Fig. 3B shows the first interface 1 mounted on the circuit board 3, wherein the feet 13 of the first interface 1 are pressed and / or soldered to connections 30 provided on the circuit board 3 for the feet 13. The connections 30 are designed as recesses in the circuit board 3, into which the feet 13 engage. The feet 13 and the recesses 30 have dimensions and are arranged at a predetermined distance such that only small soldering points are required to solder the feet 13 to the connections 30, and such that heat development at the contact point between the connections 30 of the circuit board 3 and the feet 13 on the circuit board 3 is kept as low as possible when there is a high current flow through a first contact element 10 into the circuit board 3.

[0055] The insulating body 11 is arranged with its underside adjacent to the circuit board 3 such that the insulating body 11 rests on the circuit board 3. The circuit board contacts 10 are arranged on the edge of the circuit board 3 such that they project beyond the edge of the circuit board 30 by a predetermined small amount. The predetermined small amount is designed such that the circuit board 3 with the first interface 1 mounted thereon can be inserted from above into a housing 4 open at the top without inclining or tipping the circuit board 3 and can be mounted in its intended position on the bottom of the housing 4.

[0056] This shows Fig. 4A the printed circuit board 3 equipped with the first interface 1 of Fig. 3B arranged together with a housing 4 above an upper opening of the housing 4, and Fig. 4B shows the housing 4 with the printed circuit board 3 accommodated in it at its intended position on the bottom of the housing 4 and provided with the first interface 1, together with three second contact elements 20 of a second interface 2 described above according to an embodiment of the invention.

[0057] The sockets 12 of the printed circuit board contacts 10 or the first contact elements 10 of the first interface 1 are arranged adjacent to an opening 40 formed on a wall of the housing 4, wherein the sockets 12, with their openings provided for inserting contact pins 22, are accessible from the outside via the opening 40 of the housing 4. The sockets 12 are arranged with their axis A parallel to the printed circuit board housed in the housing 4. The contact elements 20 are designed as double-sided pin contacts 22 and can be suitably provided by means of rotary contacts.

[0058] Fig. 5A shows the housing 4 and the second contact elements 20 of Fig. 4B together with an insulating body 21 for accommodating the second contact elements 20 of the second interface 2, and Fig. 5B shows the second contact elements 20 accommodated in the insulating body 21, so that the second interface 2 is provided with the insulating body 21 completely equipped with the second contact elements 20. Fig. 5B shows the second interface 2 from its side facing the interior of the housing 4 and the wall of the housing 4.

[0059] The insulating body 21 is designed to fit positively with the opening 40 of the housing 4 in such a way that when the populated insulating body 21 is arranged in its intended position at the opening 40 of the housing 4, the contact elements 20 designed as contact pins 22 and protruding from the insulating body 21 extend into the interior of the housing 4 and are inserted as intended into the sockets 12 of the first contact elements 10, so that contact between the first contact elements 10 and the second contact elements 20 is provided.

[0060] To accommodate the second contact elements 20 in the second insulating body 21, the insulating body 21 is formed from a suitable plastic and has a predetermined thickness and / or a predetermined inner contour which corresponds to the contour of the second contact elements 20 such that the second contact elements 20 can be inserted into the insulating body 21 such that they are accommodated and fixed in a stationary manner in the insulating body 21.

[0061] Fig. 6A shows the housing 4 of Fig. 5A with the second interface 2 mounted on the housing 4 and the first interface 1, so that a double-sided and / or two-part interface as described above is provided according to an embodiment of the invention, and Fig. 6B shows the double-sided and / or two-part interface of Fig. 6A in a partially transparent representation, whereby for the sake of clarity Fig. 6B only a second contact element 20 and two first contact elements 10 are shown.

[0062] The second interface 2 is screwed with its insulating body 21 to a wall of the housing 4 at its intended position at the opening 40 of the housing 4, wherein the contact pins 22 of the second contact elements 20 of the second interface 2, which extend into the interior of the housing 4, are inserted as intended into the sockets 12 of the first contact elements 10, after which contact is provided between the first contact elements 10 of the first interface 1 and the second contact elements 20 of the second interface 2. To compensate for a tolerance in the position of the first interface 2 located inside the housing 4, the opening 40 of the housing 4 and / or the insulating body 21 and / or in particular its bores for fastening screws can have a predetermined oversize.

[0063] In this embodiment of the invention, the ends of the second contact elements 20 accessible from the outside of the housing 4 are also designed as pin contacts and each provide a connection accessible from outside the housing 4, wherein the second interface 2 is designed in particular to be suitable for connecting a plug connector 5.

[0064] Fig. 7A shows the double-sided and / or two-part interface of Fig. 6A in an enlarged view from a different perspective, and Fig. 7Bshows a connector having three contact elements (not shown in the drawing), which is plugged onto the second interface 2 and thus connected to the double-sided and / or two-part interface. The contact elements of the connector 5 (not shown) can be suitable socket contact elements that correspond to the second contact elements 20 designed as a double-sided pin contact 22.

[0065] By means of a described double-sided and / or two-part interface of an embodiment of the invention, plugging and / or pulling forces occurring during plugging and / or unplugging of the connector 5 are advantageously absorbed by the housing 4 and / or the second interface 2, after which the printed circuit board 3 is protected from undesired loads and a particularly reliable double-sided and / or two-part interface is provided, in particular for connecting a connector 5, which interface is designed to be suitable for a desirable number of plugging cycles.

[0066] The double-sided and / or two-part interface is particularly designed for connecting a power connector, wherein the interface has three first 10 and second 20 contact elements for connecting a phase, an N conductor, and a PE conductor. For example, the circuit board 3 can be a circuit board 3 of a power supply unit, in particular of a computer server.

[0067] Although various aspects or features of the invention are shown in combination in the figures, it will be apparent to those skilled in the art—unless otherwise stated—that the illustrated and discussed combinations are not the only possible ones. In particular, corresponding units or feature complexes from different embodiments can be interchanged. List of reference symbols

[0068] 1Interface 10Contact element, stamped-bent contact, PCB contact 100Central section 11Insulating body 110Fixing contour 12Socket 13Foot 2Interface 20Contact element, rotary contact 21Insulating body 22Pin, pin contact 3PCB 30Connection 4Housing 40Opening 5Connectors A axis R direction

Claims

1. Interface for electrically contacting a printed circuit board (3) which is accommodated in a housing (4), wherein the interface by means of a first (1) and a second (2) interface is configured as a double-sided and / or two-part interface (1, 2), having the following features: the first interface (1) has as a printed circuit board contact (10) at least one first contact element (10) for electrically contacting at least one terminal (30) of the printed circuit board (3); the second interface (2) has at least one second contact element (20); the second interface (2) is configured so as to correspond with the first interface (1) and designed for disposal in a locationally fixed manner and / or fixation on an opening (40) of the housing (4) in such a manner that the first (10) and the second (20) contact element are brought into contact with one another, wherein the second contact element (20) provides a terminal which is able to be contacted from outside the housing (4); wherein the second interface (2) is provided by means of a second insulating member (21) which is configured in a form-fitting manner with the opening (40) of the housing (4), and in which the second contact element (20) is accommodated so as to be locationally fixed in such a manner that one end of the second contact element (20) extends into the interior of the housing (4), and one end of the second contact element (20) provides the terminal which is contactable from outside the housing (4); characterized in that the second insulating member (21) is configured in such a manner and / or is disposed on the housing (4) in such a manner, and / or has an internal contour which interacts in a form-fitting manner with a contour of the second contact element (20) in such a manner, that plug-in and / or extraction forces acting on the terminal contactable from outside the housing (4) are absorbed by the second insulating member (21) of the second interface (2) and / or by the housing (4); and wherein the first contact element (10) is disposed and configured to correspond to the second contact element (20); wherein the first contact element (10) has a socket (12) having an axis (A), and the second contact element (20) is formed at least on the inside of the housing as a pin contact (22), and wherein the pin contact (22) is inserted into the socket (12), and the first contact element (10) is a stamped-bent contact (10) having a flat central portion (100) and having a curved portion which adjoins the central portion (100) and by means of which the socket (12) is provided; wherein at least one foot (13) on a first side of the central portion (100) of the stamped-bent contact (10) extends in a first direction (R), wherein the foot (13) is provided for connecting to the terminal (30) of the printed circuit board (3); and the socket (12) having the axis (A) on a second side of the central portion (100) is configured by means of a bend in the stamped-bent contact (10), said socket (12) being provided for connecting to the pin contact (22) of the second interface (2).

2. Interface according to Claim 1, wherein the socket (12) by way of its axis (A) is disposed parallel to the printed circuit board (3).

3. Interface according to one of the preceding claims, wherein the first contact element (10) is at least partially accommodated in a first insulating member (11).

4. Interface according to one of the preceding claims, having a plurality of first contact elements (10) and / or feet (13) and / or second contact elements (20), wherein the first contact elements (10) and / or the second contact elements (20) and / or the feet (13) are in each case disposed at a predetermined mutual spacing; and wherein the first (10) and / or second (20) contact elements are in each case disposed parallel to one another.

5. Interface according to one of the preceding claims, wherein the interface (1, 2) is configured so as to be suitable for connecting a power terminal connector to the externally accessible terminal of the second contact element (20) of the second interface (2), wherein the interface (1, 2) has three first (10) and second (20) contact elements for connecting one phase, one N-conductor and one PE-conductor, and / or the interface (1, 2) has five first (10) and second (20) contact elements for connecting three phases, one N-conductor and one PE-conductor.

6. Interface according to one of the preceding claims, wherein the second interface (2) on the outside of the housing is configured so as to be suitable for connecting a plug connector (5) to the externally accessible terminal of the second contact element (20); wherein the plug connector (5) has at least one contact element, which is configured to correspond to the second contact element (20) for connecting to the terminal which is provided by means of the second contact element (20) and is contactable from outside the housing (4).

7. Interface according to one of the preceding claims, wherein the first direction (R) and the axis (A) are disposed perpendicularly to one another.

8. Interface according to one of the preceding claims, wherein the first contact element (10) has a multiplicity of feet (13) which on the first side of the central portion extend in the first direction (R), wherein the feet (13) are provided for a corresponding multiplicity of terminals (30) of the printed circuit board (3), and wherein the feet (13) are disposed at a predetermined mutual spacing.