EP3384561A1

EP3384561A1 - Conductor connection contact and circuit board assembly

Info

Publication number: EP3384561A1
Application number: EP16801757.2A
Authority: EP
Inventors: Thomas Trümper; Jens BRANDHORST
Original assignee: Wago Verwaltungs GmbH
Current assignee: Wago Verwaltungs GmbH
Priority date: 2015-12-02
Filing date: 2016-11-24
Publication date: 2018-10-10
Anticipated expiration: 2036-11-24
Also published as: WO2017093119A1; DE202016106235U1; CN108292810A; CN111509414B; DE202016008612U1; CN111509414A; PL3384561T3; CN111509413B; EP3384561B1; EP3671960A1; CN111509413A; CN108292810B

Abstract

The invention relates to a conductor connection contact (1), comprising a soldering connection surface (13a, 13b) for connecting to a circuit board (17a, 17b, 17c, 17d, 17e) and comprising an insertion contact connection (8) having at least one spring clamping element. The insertion contact connection (8) is formed on a connection plane (9) of the conductor connection contact (1), which connection plane is spaced apart from the plane of the soldering connection surfaces (13a, 13b) and has an insertion opening (10) and at least one elastic clamping tongue (11) for forming the spring clamping element. The connection surface (9) transitions into foot sections (14), which are each connected to a soldering connection surface (13a, 13b) or have a soldering connection surface (13a, 13b) on the side thereof facing away from the connection surface (9).

Description

Conductor connection contact and circuit board arrangement

The invention relates to a conductor connection contact with a solder pad for connection to a printed circuit board and a plug contact terminal with a spring clamping element.

The invention further relates to a printed circuit board assembly having a printed circuit board, wherein a conductor terminal contact is soldered with its solder pads on the circuit board.

Printed circuit boards with electrical / electronic components applied thereto have conductor connection contacts for the electrically conductive connection of conductors or for the connection of adjacent printed circuit boards. These are soldered in through-hole mounting or surface mounting on the circuit board and connected to this electrically and mechanically.

DE 200 01 510 U1 shows a connection device for electrical conductors with soldered on a circuit board insulation displacement contact terminals. Such a contact element is designed as a sheet metal punched / bent part and has two mutually parallel aligned pairs of muzzle-like widening in its end region contact cutting for cutting the insulation of an electrical conductor to be clamped on. The contact blades of each pair of contact blades are separated by slots. The two contact cutting pairs are connected to each other via lateral webs. Several such cutting contact elements are band-like connected to each other for common mounting on the circuit board.

EP 0 043 165 A1 shows an insulation displacement contact with two conductor connection regions oriented transversely to one another. The conductor connection areas are because formed by Klennnnschlitze on opposite walls, wherein the walls are folded into a box.

DE 10 2006 052 1 19 A1 discloses an insulation displacement connection with a first insulation displacement element fastened to a first component and a second insulation displacement element attached to a second component. The two insulation displacement elements are inserted into each other in the joining direction and arranged transversely to the joining direction displaceable to each other. DE 196 17 259 A1 discloses an electrical terminal with an upwardly open insulation displacement contact and other plug contacts, which are arranged in the lower part of the terminal. The clamp is made in one piece from a strip-shaped metal strip, wherein the one end of the strip material is divided into a plurality of tongues, one of which stabilizes the shape of the terminal as the anchor end piece and the other as leaf spring end pieces form the insulation displacement contacts , From a bottom surface connecting the insulation displacement contact and the leaf spring end protrude PCB solder pins.

DE 195 12 221 A1 shows an electrical terminal block for printed circuit boards with an attachable to Lötanschlussstifte bridge rail. The bridging rail is formed as a substantially planar extending flat bridging band having through-slots formed by two resilient tongues punched out of the bridging band. Proceeding from this, it is the object of the present invention to provide an improved conductor connection contact and an improved printed circuit board arrangement, wherein the conductor connection contact is as compact as possible, easy to handle and stable and thereby ensures a reliable electrical contact. The object is achieved with the conductor connection contact having the features of claim 1 and the printed circuit board arrangement with such a conductor connection contact with the features of claim 9. Advantageous embodiments are described in the subclaims. Characterized in that the plug contact terminal is formed on a pad of the conductor terminal contact, which is spaced from the plane of the solder pad, the compliance of necessary clearance and creepage distances can be ensured in a compact design. The connection surface has a

Plug opening and at least one resilient clamping tongue to form the spring clamp element. This allows the simple clamping of an electrical conductor which is inserted through the plug-in opening and clamped by means of the resilient clamping tongue on the connection surface of the plug contact terminal.

The connection surface then merges into a foot region, which is in each case connected to a solder connection surface or has a solder connection surface on its side facing away from the connection surface. In this way, the connection surface is stored stably away from the plane of the printed circuit board with the aid of the foot regions. The solder pads adjacent to the foot regions thereby ensure that the plug contact terminal is held stable on soldering pads on a printed circuit board when the solder pad contact is soldered. The current flow then goes via the foot areas directly to the solder pad, so that the current-conducting cross sections and paths are optimized.

At the opposite marginal edges of the insertion opening spring-elastic clamping tongues may be bent towards each other pointing. The freely movable ends of the clamping tongues then form clamping edges for clamping an electrical conductor or contact pin inserted into the plug-in opening. In this way, an electrical conductor or contact pin can be clamped very reliably in a very simple construction of the conductor connection contact. The current paths then lead by the shortest route via the clamping tongues and the foot sections to the solder connection surfaces. At the conductor connection contact can continue to be present an insulation displacement contact connection.

A solder pad can be arranged between a insulation displacement contact connection and a web leading to the connection plane. This has the Advantage, that the insulation displacement contact terminal and the pad are connected to each other via the common solder pad, wherein the current paths between insulation displacement contact and plug contact are short and the insulation displacement contact terminal and the plug contact via the common Solder connection surface are mechanically stabilized.

The insulation displacement contact terminal may have two spaced-apart contact fingers joined together in a common root section. The root section then merges into the foot section or forms the foot section. Thus, it is conceivable that the root section merges into one of the solder connection surfaces. This then leads to a very compact construction of the solder connection contact. The extension direction of a clamped at the insulation displacement contact terminal jumper in the clamping region on the insulation displacement contact terminal can be aligned transversely to the direction of insertion of the plug contact terminal. The direction of extension of the wire bridge at the insulation displacement contact connection in the region of the terminal point, in which a wire bridge is guided to the clamping point between the contact fingers, however, runs in the insertion direction of the plug contact terminal. The plane spanned by contact fingers of the insulation displacement contact terminal or a slotted wall for forming the insulation displacement contact connection is thus aligned transversely to the plane of the connection surface. By "transverse" is meant an orientation in the angular range of 90 ° +/- 20 ° and preferably 90 ° +/- 5 °.

The extension direction of the jumper clamped onto the insulation-displacement contact connection in the clamping region of this insulation-displacement contact connection can be in the extension direction of the connection surface or else transversely to the extension direction of the connection surface. It is also conceivable that it is aligned obliquely to the extension direction of the connection surface.

The printed circuit board assembly has a printed circuit board in which such a conductor connection contact is soldered to its solder pads on the printed circuit board. The ladder- plate then has below the plug opening a conductor opening, so that an electrical conductor through the conductor opening in the

Inserted plug-in opening and can be connected to the plug contact terminal. This allows a very compact connection of an electrical conductor to the circuit board with a plug-in direction perpendicular to the circuit board.

The pad of the conductor connection contact may extend parallel to the plane of the circuit board. A section of the conductor connection contact having the insulation displacement contact connection then projects from the plane of the circuit board.

From the pad, a material can be lapped at a distance from one of the solder pads, e.g. in the direction of an insulation-displacement contact connection. This enlarges the connection surface adjacent to the plug-in contact connection. This material flap (also referred to as flap) serves to provide an enlarged suction surface for automated handling and assembly of the conductor connection contacts.

The clamping spring tongues may have a bend or a bend in a region upstream of the respective clamping edge. As a result, the mutually bent-out clamping tongues are aligned at a greater angle to one another in the regions adjoining the connection surface than in the region adjoining the clamping edge. As a result of the kink or the bend, the surfaces of the mutually opposite clamping tongues adjoining the clamping edges are thus arranged at an acute angle to one another. These additional bends lead to a reduction of the insertion forces and allow the release of a connected conductor by turning and pulling the clamped conductor. According to an advantageous development of the invention, it is provided that the insertion direction for inserting an electrical conductor into the plug contact connection runs essentially perpendicular to the spatial extension of at least one of the solder connection surfaces. In this way, the electrical conductor be inserted conveniently transversely to the spatial extent of the circuit board from the top or bottom in the plug contact.

According to an advantageous embodiment of the invention, it is provided that at a peripheral edge of the insertion opening a resilient clamping tongue and at one of these marginal edge opposite the edge of the insertion opening a conductor insertion tongue is arranged, wherein the clamping tongue and the Leitereinführzunge be bent away from each other. In this way, the conductor insertion tongue can form a Leitereinführschräge for simplified insertion of an electrical conductor seen to a clamping point formed with a freely movable end of the clamping tongue. The conductor insertion tongue is not necessarily part of the nip itself or not necessarily form an abutment in the clamping of the electrical conductor through the clamping tongue. The anvil can e.g. be formed by the connection surface of the conductor connection contact.

According to an advantageous development of the invention, it is provided that the conductor connection contact has a further plug contact connection whose insertion direction for inserting a conductor into the further plug connection runs essentially orthogonal to a plug-in direction of the plug contact connection formed on the connection surface. This has the advantage that the wiring direction of electrical conductors to be inserted in the conductor connection contact can be subsequently selected, e.g. with already attached to an electrical circuit board conductor connection contact. Thus, it is optionally possible to insert an electrical conductor perpendicular to the electrical circuit board (into the plug contact connection on the connection surface) or horizontally to the circuit board (into the plug connection in at least one of the foot sections). Thus, in the case of the conductor connection contact according to the invention, it is not necessary to determine from the outset whether the circuit boards, e.g. LED modules are wired on the PCB top or PCB base. Rather, both options continue to exist.

The further plug contact connection may be formed, for example, on a foot portion of the conductor connection contact. The conductor connection contact can also be several have further plug-in contact terminals with said orthogonal insertion direction, for example, in each of the foot sections such a plug contact terminal or more such plug contact terminals. In this way, for example, a looping through of an electrical potential from one printed circuit board to the next printed circuit board can be realized.

By combining a vertical and a horizontal conductor terminal at the same conductor terminal contact, e.g. An SMD terminal, PCBs can be wired both vertically (from the back of the PCB) and horizontally (on top of the PCB). Thus, no circuit boards for the particular application with specially shaped conductor connection contacts must be made. Instead, a printed circuit board can be manufactured and used for both types of wiring. For example, luminaire manufacturers can use a single LED module with such a conductor connection contact for front and rear wired luminaires.

The insertion direction of the first-mentioned plug contact terminal, which is formed on the terminal surface of the conductor connection contact, may optionally point towards the front or the back of the circuit board, ie from the side of the conductor connection contact, at which the foot sections protrude from the connection surface, or from the opposite Side of the connection surface. Thus, a wiring can be made possible for both Kontaktierungsrichtungen on the circuit board top. Depending on the shape of the conductor connection contact, the further plug contact connection may allow wiring on the upper side of the printed circuit board or on the underside of the printed circuit board, depending on which side the solder connection surface is formed on. The conductor connection contact may also be formed with two-sided solder pads, so that optionally the conductor connection contact protrudes from one PCB side and is not passed through an opening of the circuit board, or is passed through an opening in the circuit board and protrudes on the opposite side of the circuit board. The circuit board assembly may have a plurality of circuit boards disposed adjacent to one another. The conductor connection contacts are then arranged at opposite edge regions of the printed circuit board diagonally offset from one another. Thus, the adjacent circuit boards can be electrically connected to each other by means of wire bridges, which extend between the opposing conductor connection contacts. Due to the diagonally offset arrangement of the conductor connection contacts, the wire bridges are then guided over several bends, so that a sufficient tolerance compensation of thermal expansions is ensured. Due to the diagonally offset arrangement of the conductor connection contacts, a point or mirror-symmetrical arrangement of the conductor connection contacts on a printed circuit board is also possible. For example, conductor connection contacts can be arranged point-symmetrically diagonally offset from one another at mutually opposite edge regions of a printed circuit board. A wire bridge in the sense of the present invention is understood to mean an electrical line which can be clamped in the insulation-displacement contact connection, in particular a non-insulated piece of wire, an insulated electrical conductor (rigid or flexible) or else a conductor piece with a rectangular cross-section.

For the purposes of the present invention, the indefinite term "a" is not to be understood as a number word, but in the sense of "at least one".

The invention will be explained in more detail with reference to embodiments with the accompanying drawings. Show it:

Figure 1 a) - perspective view of a first embodiment of a conductor connection contact;

Figure 1 b) - perspective view of a modified embodiment of

Conductor connection contact of Figure 1 a);

FIG. 2a) - side view of the conductor connection contact from FIG. 1;

Figure 2b) - side view of a modified embodiment of the conductor terminal contact of Figure 2a);

FIG. 3 shows a front view of the conductor connection contact from FIGS. 1 and 2; Figure 4 - top view of the conductor connection contact of Figure 1 to 3;

FIG. 5 shows a perspective view of a second embodiment of a conductor connection contact;

6a) - perspective detail view of a printed circuit board arrangement with two electrically conductively connected via a wire bridge, adjacent printed circuit boards;

FIG. 6b) shows a perspective view of a printed circuit board arrangement with two adjacent printed circuit boards electrically connected via a coiled wire bridge;

Figure 7a) - perspective detail view of a printed circuit board assembly with two juxtaposed and electrically connected via a wire bridge circuit boards;

FIG. 7b) shows a perspective view of a printed circuit board arrangement with two printed circuit boards arranged next to one another and electrically conductively connected via an angled wire bridge;

FIG. 8 shows a perspective cutaway view of a printed circuit board arrangement with electrical conductors clamped in the plug contact connection of the conductor connection contacts;

Figure 9 - side sectional view of a printed circuit board assembly in the neck with clamped electrical conductor;

Figure 10 - a perspective cutaway view of a printed circuit board assembly for a luminaire;

Figure 1 1 - perspective view of a third embodiment of a conductor connection contact;

FIG. 12 shows a perspective view of a fourth embodiment of a conductor connection contact;

FIG. 13 shows a side view of the conductor connection contact from FIG. 12;

FIG. 14 shows a perspective rear side view of the conductor connection contact from FIGS. 12 and 13;

FIG. 15 shows a perspective view of a further embodiment of a conductor connection contact;

FIG. 16 shows the conductor connection contact according to FIG. 15 in side view;

FIG. 17 shows a perspective view of a printed circuit board arrangement formed with the conductor connection contact according to FIGS. 15 to 16; Figure 18 - the circuit board assembly of Figure 17 in side view.

Figure 1 a) can be seen a perspective view of a first embodiment of a conductor connection contact 1, which is integrally formed from a piece of sheet material as a punched and bent part. The conductor terminal contact 1 has a insulation displacement contact terminal 2 at one end. This insulation displacement contact terminal 2 is formed of two contact fingers 3, which are aligned parallel to each other with an intermediate clamping slot 4 on a common plane and connected to each other via a common root area 5. The free end portions of the contact fingers 3 are funnel-shaped tapered to the root area 5, for example, formed by an inlet slope 6, so that the insertion of a wire bridge is facilitated in the clamping slot 4.

The mutually facing inner edges 7 of the contact fingers 3 clamp by the spring force of the contact fingers 3 and the adjacent root portion 5 a wire bridge between them. They are at least as far as formed as cutting contacts that dig the contact fingers 3 in the surface of an inserted wire bridge. But you can also be sharp-edged to cut a Isolierstoffmantel a wire bridge, for example. An insulated rigid or flexible electrical see conductor when plugged into the insulation displacement contact 2 to expose in this way the electrically conductive part of the wire bridge and electrically conductive to contact with the contact fingers 3.

It is also clear that the conductor connection contact 1 a Steckkontaktan- circuit 8 has on a connection surface 9. This connection surface 9 has a plug-in opening 10 and spring-elastic clamping tongues 11, which protrude away from the plane of the connection surface 9 and out of the plug-in opening 10 and toward one another. The clamping tongues 1 1 are cut or punched out of the sheet material of the pad 9 and protrude from opposite edges of the plug-in opening 10 from. The plug-in opening 10 is then limited by opposing side webs 12.

Furthermore, the conductor connection contact 1 has two solder connection surfaces 13a, 13b. It can be seen that the connection surface 9 on a plane above the through the Lötanschlussflächen 13 a, 13 b clamped plane is located. Foot portions 14 are provided between the connection surface 9 and the solder connection surfaces 13a, 13b, which adjoin the connection surface 9 and lead to a respective solder connection surface 13a, 13b. These foot sections 14 are formed in the embodiment shown as folded from the connection surface 9 webs. These are bent at approximately right angles from the connection surface 9.

The solder pads 13a, 13b may be formed at the end of the foot portions 14 or, as in the case of the solder pad 13a, after another turn from the foot portion 14 into a solder pad 13a.

It is clear that the horizontal solder pad 13a merges into the insulation displacement contact terminal 2 or its root portion 5. This root portion 5 with the adjoining contact fingers 3 extends approximately parallel to the foot portion 14, so that the cutting-clamping

Contact terminal 2 and the foot portion 14 are approximately perpendicular to the solder terminal pad 13a connecting the insulation displacement contact terminal 2 with the foot portion 14. The connection surface 9, however, lies on a plane which lies transversely to the plane of extent of the insulation-displacement contact connection 2. The insulation displacement contact terminal 2 is thus aligned on a plane which is perpendicular to the plane of the connection surface 9. It is also conceivable that the plane of the connection surface 9 is at an angle of 90 ° +/- 45 ° to the plane of the insulation displacement contact terminal 2. By the two foot portions 14 at the opposite ends of the pad 9 of the conductor terminal contact 1 can be stably soldered to a circuit board. With the aid of the transition from the first solder pad 13a to the cutting-terminal contact terminal 2 projecting therefrom, this too is stably connected to a printed circuit board in the case of short current paths.

FIG. 1 b) shows a variant of the conductor connection contact 1 which is somewhat modified compared to the embodiment of FIG. 1 a). Essentially, reference may be made to what has been said before. In addition, a material tab 3 is provided on the connection surface 9 at a distance from the horizontal solder connection surface 13a. see, which is cut free from the merging into the foot section 14 bending and increases the flat surface of the connection surface 9 in the region of the bend. Thus, the suction for the automatic handling and assembly of the conductor terminal contact 1 is increased. In the illustrated embodiment, the material tab 33 is provided on the side of the insulation displacement contact 2 and extends in the direction of this insulation displacement contact 2. It is also conceivable that such a material flap 33 on the opposite side at a distance to the solder pad 13b) is present or that such material tabs are provided on both sides. This also depends concretely on the position of the plug-in opening 10 on the connection surface 9.

Furthermore, it can be seen that the solder pad 13b) on the right side of the foot portion 14 merges in a bend and provides a surface Auflagerung. This solder connection surface 13b) is thus not formed, as in FIG. 1a), only by the lower edge of the foot section 14, but rather by a surface section extending transversely away from the foot section 14 after a bend. Also, the insulation displacement contact terminal 2 is slightly modified compared to the embodiment of Figure 1 a). It is clear that the outer edges of the contact fingers 3, which are opposite to the clamping slot 4, are concave towards the clamping slot. Thus, the width of the insulation displacement contact terminal 2 in the region of the contact slot is less than in the region of the inlet slopes 6. In this way, the spring force of the contact fingers 3 can be improved.

FIG. 2 a) shows a side view of the conductor connection contact 1 from FIG. 1 a). It is once again clear that the connection surface 9 is spaced from the plane of the solder connection surfaces 13a, 13b, which is achieved by the foot regions 14. It can also be seen that the insulation displacement contact connection 2 is located on a plane transverse to the plane of the connection surface 9. The clamping tongues 1 1 of the spring clamping element are facing away from each other out of the plane of the connection surface 9 and away from the plane of the solder connection surfaces 13 a, 13 b pointing away. The free-moving ends of the spring-elastic clamping tongues 1 1 have clamping edges 15 to form a plug contact to clamp a plugged into the underlying insertion opening 10 in the insertion direction S electrical conductor or pin between them and thus electrically conductive contact. FIG. 2 b) shows a side view of the modified conductor connection contact 1 from FIG. 1 b). In this case, it becomes clear that the material tab 33 extends at a distance from the solder connection surface 13a on the plane of the connection surface 9 in the direction of the insulation-displacement contact connection 2, so as to enlarge the suction surface for an automatic handling machine.

It is also clear that the right solder pad 13b) is not simply formed from the lower peripheral edge of the foot section 4, but from a surface section extending away from the foot section 4. It can also be seen that the contact fingers 3 of the insulation displacement connection taper conically towards the free end with respect to their width. That is, the material thickness of the contact fingers 3 decreases toward their free end.

FIG. 3 shows a front view of the conductor connection contact 1 from FIGS. 1 a and 2 a. It is clear that the contact fingers 3 are formed while leaving an intermediate clamping slot 4 of the sheet material and pass in a curve in a common root area 5. The contact fingers 3 taper towards the free end, wherein the inner edges form an insertion funnel there on an inclined surface 6.

The insulation displacement contact terminal 2 is thus formed in the manner of a fork contact to a plugged into the clamping slot 4 wire bridge in the form of a non-insulated, round in cross-section rod, an insulated rigid or flexible electrical conductor or a cross-sectionally round, rectangular or otherwise suitable power rail to clamp.

FIG. 4 shows a plan view of the conductor connection contact 1 from FIG. 1 a. It is clear that the connection surface 9 has a plug-in opening 10, protrude from the opposite edge regions of the resilient clamping tongues 1 1 to form a spring clamping element. An electrical conductor can thus be inserted from the bottom through the insertion opening 10 and clamped with the resilient clamping tongues 1 1.

On the other hand, the insulation-displacement contact terminal 2 on the left-hand side of the conductor connection contact 1 extends on a plane which is perpendicular to the plane of the conductor connection surface 9. The contact fingers 3 of the insulation displacement contact terminal 2 lie on a plane which is transverse to the longitudinal extension direction of the conductor connection contact 1 and its connection surface 9. The longitudinal extension direction is the direction from the insulation displacement contact terminal 2 to the plug contact terminal 8.

FIG. 5 shows a second embodiment of a conductor connection contact 1. This is constructed in principle similar to the first embodiment. Only the insulation displacement contact connection 2 is twisted with respect to the extension direction of the conductor connection contact 1. It can be seen that the contact fingers 3 now lie on a common plane which extends transversely to the plane of the connection surface 9 and in the longitudinal direction of the connection surface 9, i. to the plug contact terminal 8 extends. In this way, the extension direction of a wire jumper clamped to the insulation displacement contact 2 lies in the clamping region transversely to the longitudinal direction of the conductor connection contact 1, while the extension direction is aligned with the insulation displacement contact connection 2 in the longitudinal direction of the conductor connection contact 1.

The connection surface 9 does not necessarily have to be a flat surface, as shown. It may also be a curved surface that merges into adjoining curved or straight foot sections 14. But it is also conceivable one in cross section pointed roof-shaped design of the connection surface 9 with obliquely to the plane of the circuit board extending foot sections. 9

FIG. 6 a) shows a perspective cutaway view of a printed circuit board arrangement 16. This printed circuit board assembly 16 has at least two adjacently arranged printed circuit boards 17a, 17b, on each of which at least one conductor terminal contact 1 is soldered. It can be seen that the connection surface 9 with the plug-in contact connection 8 is respectively supported on the plane of the printed circuit board 17a, 17b by means of the opposing foot sections 14 or spaced apart from the plane of the printed circuit board 17a, 17b. Furthermore, it is clear that below the plug opening 10 of the plug contact terminal 8, a conductor opening 18 is introduced into the circuit board. The conductor lead-through opening 18 is aligned with the plug-in opening 10 so that its center of gravity is preferably on a common vertical of the circuit board 17b, so that an electrical conductor can be guided through the conductor opening 18 into the plug-in opening 10, to be clamped there to the plug contact terminal 8.

It is also clear that the conductor connection contacts 1 of the adjacent circuit boards 17a, 17b, which adjoin one another, are arranged diagonally offset and rotated relative to one another. As a result, the insulation displacement contact terminals 2 of the two conductor connection contacts 1 arranged adjacent to one another over the length of the conductor connection contacts 1 are arranged offset to one another. A wire bridge 19 can thus be clamped in each case with its opposing free end sections 20a, 20b to an associated insulation displacement contact connection 2. The clamping direction and thus the extension direction of these end portions 20a, 20b of the wire bridge 19 extends transversely to the plane of the insulation displacement contact terminal 2 in the main extension direction of the conductor connection contacts 1 and the adjoining edge of the respective circuit board 17a, 17b. Of the opposite end portions 20a, 20b of the wire bridge 19 each have a common main portion 21 is bent, which extends transversely to the longitudinal direction of the conductor connection contacts 1 and thus also transversely to the extension direction of the gap between the two circuit boards 17a, 17b. In the case of the use of a conductor terminal contact 1 according to the second embodiment in FIG. 5, the wire bridge 19 would then simply have to be turned through 90 ° so that the main section 21 extends in the direction of extension of the conductor connection contacts 1 and the adjacent boundary edges or the space between the circuit boards 17a, 17b extends. The end portions 20a, 20b would then be clamped in their direction of extension transversely to the longitudinal extension direction of the conductor connection contacts 1 to the respective insulation displacement contact terminal 2.

Figure 6b) shows a somewhat modified perspective view of a printed circuit board assembly 16 as compared to Figure 6a), in which the insulation displacement contact terminals 2 are oriented such that the planes defined by the contact fingers 3 are opposite each other, i. to each other. These planes are aligned parallel to each other. Therefore, the plugged into the clamping slots 4 end portions 20a, 20b respectively facing the opposite circuit board 17a, 17b oriented. However, instead of a straight wire bridge, a coiled by a loop-like portion 34 embodiment is used. In order for a tolerance compensation is ensured in a positional shift of the printed circuit board assembly 16.

FIG. 7 a) reveals the opposite side of the printed circuit board 17 b with a further printed circuit board 17 c of the printed circuit board arrangement 16 adjoining thereto. These are the last printed circuit boards 17b, 17c of a matrix-like number of printed circuit boards 17a, 17b, 17c arranged in a matrix. Here, the printed circuit boards 17b, 17c adjacent to one another on their longitudinal edges are connected to one another in an electrically conductive manner. For this purpose, in turn, a wire bridge is provided, which is designed as a non-curved, straight rod or electrical conductor. Since the extension direction of the clamped to the insulation displacement contact terminals 2 jumper 19 in the region of the respective

Clamping point of the two conductor connection contacts 1 to be joined together in the arrangement direction, the free end portions 20a, 20b without further bending of the wire bridge 19 transversely to the plane of the insulation displacement contact terminals 2 can be clamped thereto. It can also be seen that the printed circuit boards 17a, 17b, 17c carry electrical or electronic components 22, in particular light-emitting diodes. This circuit board assembly 16 can thus be used for a lamp. The circuit boards 17a, 17b, 17c carry strip conductors 23, which are soldered to the solder connection surfaces 13a, 13b with a respective conductor connection contact 1. In this way, electrical energy can be supplied via the conductor connection contacts 1 to the electrical / electronic components 22 to be supplied. Figure 7b) shows a modified embodiment of a printed circuit board assembly 16, in which the interconnected insulation displacement contact terminals 2 are aligned so that the clamping slots 4 are not aligned facing each other as in the embodiment of Figure 7a). Therefore, the end portions 20a, 20b of the wire bridge 19 extend approximately parallel to each other in the same main extension direction. The two end portions 20a, 20b are interconnected by a transverse web 35. The wire bridge 19 is configured in the manner of a U-shaped element.

FIG. 8 shows a perspective cutaway view of the printed circuit board arrangement 16 in a region in which electrical conductors 24 each pass through a conductor lead-through opening 18 in the printed circuit board and the one above it

Plug opening 10 of the conductor connection contact 1 are guided. The free stripped end of an electrical conductor 24 is then clamped to the clamping edges of the resilient clamping tongues 1 1 and contacted there electrically conductive and mechanically held. Thus, a voltage potential can be applied to the printed circuit board assembly 16 to provide the electrical / electronic components 22 with electrical power. In this case, as shown, the insulation displacement contact terminals 2 are not occupied when the electrical / electronic components 22 and their circuit boards 17a, 17b, 17c, 17d, 17e are connected in series. In a parallel connection, however, it is conceivable that also the insulation displacement contact terminals 2 carry a wire bridge 19 to the electrical power not only via the tracks 23 to the opposite conductor terminal 1 of the same circuit board 17a, 17b, 17c, 17d, 17e but directly to an adjacent circuit board 17a, 17b, 17c, 17d, 17e.

FIG. 9 shows a sectional illustration of the printed circuit board arrangement 16 from FIG. 8 with electrical conductors 24 clamped thereto. It is clear that the printed circuit board 17d is supported on a carrier element 25. This carrier element 25 may, for example, be a sheet-metal housing of a luminaire. In alignment with the conductor leadthrough opening 18 of the printed circuit board 17d, a leadthrough opening 26, which is closed by a leadthrough seal 27, is introduced into the carrier element 25. The electrical conductor 24 is then passed through the opening of the feedthrough seal 27 to be electrically conductively contacted as shown at a plug contact terminal 8.

Opposite the carrier element 25 is a lens element 28, e.g. made of transparent plastic placed on the support member 25, so as to cover the lamp assembly and emitted by the electronic components 22 in the form of light emitted light as evenly as possible or focused. It can be seen that webs 29 protrude from the lens element 28 in the area of the insulation displacement contact terminals 2. These webs 29 take e.g. a cutting-terminal contact terminal 2 on both sides in a groove of a web 29. In the web 29 then a slot in the region of the gap between the clamping fingers 3 is provided to pass a wire bridge 19 through the web 29 and clamped to the associated insulation displacement contact terminal 2.

For mounting the wire bridges 19 can be inserted into these webs 29, so that by placing the support member 25 with the preassembled circuit boards 17a, 17b, 17c, 17d on the lens element 28, the wire bridge 19 in the clamping slots 4 of the insulation displacement contact terminals 2 are introduced.

Thus, the creepage distances and creepage distances are increased and there is created a support for the support member 28. FIG. 10 shows a perspective view of a section of a luminaire arrangement 30 with the carrier element 25 from FIG. 9 and strip-shaped printed circuit boards 17a, 17b, 17c, 17d installed therein. It becomes clear that each printed circuit board 17a, 17b, 17c, 17d carries conductor connection contacts 1 at their opposite ends adjacent to the narrow edges. These are arranged point-symmetrical to one another, so that the insulation displacement contact terminals 2 of such a pair of conductor connection contacts 1 each point to the other longitudinal edge or adjacent to each other longitudinal edge 31 a, 31 b are arranged.

It is also clear that electrical conductors 24 are introduced transversely to the plane of the printed circuit boards 17d, 17c from the underside of the carrier element 25 in order to be clamped to the plug-in contact terminals of these conductor connecting contacts 1.

At the front end, the carrier element 25 is closed with an end cap 32 which is attached to the profile of the carrier element 25.

FIG. 11 shows a perspective view of another embodiment of a conductor connection contact 1. This differs from the above-described conductor connection contacts 1 in that no insulation displacement contact terminal 2 for clamping a further electrical conductor or a wire bridge is present. These conductor connection contacts 1 are provided in particular for the end connections of a luminaire arrangement 30, to which energy supply / discharge lines are clamped.

For the further construction, reference may be made to the description of the embodiment of Figure 1 b). It is also conceivable that the embodiment shown in Figure 1 a) or other variants are designed without insulation displacement contact terminal 2.

FIG. 12 shows a modified embodiment of a conductor connection contact 1, in which the clamping tongues 11 are provided with a further bend 36 or a bend. Thus, the clamping tongues 1 1 in their area, the adjacent to the pad 9, arranged at a greater angle to each other (ie, with a shallower angle), as in the adjacent to the clamping edges 15 area. The adjoining the clamping edges 15 portion of the clamping tongues 1 1 is thus exhibited steeper to each other, as the surface 9 in the connecting surface of the clamping tongues 1 1. As a result, the insertion forces for the insertion of an electrical conductor are reduced and it becomes possible to loosen a connected electrical conductor by turning and pulling. This embodiment of the clamping tongues 1 1 is even clearer in Figure 13 based on the page representation. In the illustrated embodiment, it is provided that the adjoining the clamping edges 15 portions of the clamping tongues 1 1 are arranged at an acute angle in the rest position without inserted electrical conductors, while the adjoining the terminal surface 9 portions of the clamping tongues 1 1 at an obtuse angle aligned with each other. This does not change even when pinching an electrical conductor, since both angles reduce by the further raising of the clamping tongues 1 1, the ratio between obtuse angle and acute angle is still maintained.

FIG. 14 shows a perspective view of the modified embodiment from FIGS. 12 and 13. These bends 36 can in principle also be provided on other configurations of the conductor connection contacts 1, in particular the conductor connection contacts 1 from FIG. 1 a) and FIG. It is once again clearly visible that the clamping tongues are bent towards each other at an angle from the connection surface 9. By the bends 26 or a bend of the angle between the opposite portions of the clamping tongues 1 1 is reduced. As a result, the insertion forces are reduced for an inserted through the plug opening 10 electrical conductor and the conductor can be removed by turning and pulling the plug connection 8.

The conductor connection contact shown in FIGS. 15 and 16 has, similar to the conductor connection contact explained above with reference to FIG. contact terminal 8a in the pad 9 on. From the material of the conductor connection contact 1 are two resilient clamping tongues 1 1 a bent upwards, so that there is a plug-in opening 10a is formed. The connection surface 9 is likewise at a distance from the plane of the solder connection surfaces 13a, 13b, in that the ends of the conductor connection contact 1, which have the solder connection surfaces 13a, 13b, via foot sections 14, which for example can extend substantially vertically to the connection surface 9, with the connection surface 9 are connected. As can be seen, the foot portions 14 in this embodiment may be slightly longer than the embodiment of FIG. 11. In one or both foot sections 14, for example, a further plug contact terminal 8b may be formed. FIGS. 15 and 16 each show only one further plug contact connection 8b in a foot section 14.

As can be seen, the further plug-in contact connection 8b is formed by exposing a spring-elastic clamping tongue 11b from the material of the foot section 14, so that an insertion opening 10b is formed there. At a free end, the resilient clamping tongue 1 1 b has a clamping edge. An electrical conductor can then be clamped between the clamping tongue 1 1 b facing bottom of the pad 9 and this clamping edge.

As can be seen in particular in FIG. 16, the plug contact connection 8a formed in the connection surface 9 has a plug-in direction S which runs essentially perpendicular to the connection surface 9. The plug-in direction S, as shown in Figure 16, extend from bottom to top, or in the opposite direction, when the resilient clamping tongues 1 1 a are bent to the other side of the pad 9 (down).

The further plug-in contact terminal 8b has a conductor insertion direction W, which extends substantially perpendicular to the conductor insertion direction S. In this way, a einzusteckender electrical conductor either horizontally (Leiterereinsteckrichtung W) or vertically (Leiterereinsteckrichtung S) are plugged to the pad 9 and accordingly to the parallel circuit board. If required, respective electrical conductors can be plugged into both plug contact terminals 8a, 8b. To simplify the insertion of an electrical conductor in the Leiterereinsteckrichtung W in the other plug contact 8b is from the material of the conductor connection contact 1 at the opposite edge of the insertion opening 10b, on which not the resilient clamping tongue 1 1 b is bent out, a Leitereinführzunge 1 10 in the opposite direction bent out, that is, the lead insertion tongue 1 10 points to the right against the Leiterereinsteckrichtung W. In this way, a funnel-shaped conductor insertion is formed, which facilitates the insertion of an electrical conductor in the other plug contact terminal 8b.

FIGS. 17 and 18 show a printed circuit board 17 with a conductor terminal contact fastened thereto according to FIGS. 15 to 16. In particular, FIG. 18 shows the possibility of inserting an electrical conductor 24a perpendicular to the printed circuit board 17 and optionally or additionally an electrical conductor 24b horizontally Printed circuit board 17.

In FIGS. 17 and 18, the spring-elastic clamping tongues 11a, as can be seen, are bent out of the connection surface 9 opposite to the illustrations in FIGS. 15 and 16, so that an electrical conductor can be inserted and plugged in from an opposite direction.

The conductor connection contact 1 projects according to the representation of FIGS. 17 and 18 through an opening in the printed circuit board 17, so that the overall height is reduced compared to the arrangement of the conductor connection contact 1 on the printed circuit board, as shown for example in FIG.

Claims

Conductor connection contact (1) with at least one solder connection surface (13, 13b) for connection to a circuit board (17a, 17b, 17c, 17d, 17e) and at least one plug contact connection (8, 8a) with a spring clamping element, characterized in that the plug contact connection (8 , 8a) is formed on a connection surface (9) of the conductor connection contact (1), which is spaced from the plane of the solder connection surface (13a, 13b) and has a plug-in opening (10) and at least one resilient clamping tongue (1 1) to form the spring clamping element , and that the connection surface (9) merges into at least two foot sections (14), each of which is connected to a solder connection surface (13a, 13b) or has a solder connection surface (13a, 13b) on its side facing away from the connection surface (9).

Conductor connection contact (1) according to claim 1, characterized in that on opposite edge edges of the plug-in opening (10) resilient clamping tongues (1 1) are bent out towards each other, the freely movable ends of the clamping tongues (1 1) having clamping edges (15) for clamping a form an electrical conductor or a contact pin inserted into the plug opening (10).

Conductor connection contact (1) according to claim 1, characterized in that a solder connection surface (13a, 13b) is arranged between an insulation displacement contact connection (2) and a web leading to the connection surface (9).

4. Conductor connection contact (1) according to one of claims 1 to 3, characterized in that the insulation displacement contact connection (2) has two separate nander has spaced contact fingers (3) which are connected to one another in a common root section (5).

Conductor connection contact (1) according to claim 4, characterized in that the root section (5) merges into one of the solder connection surfaces (13a, 13b).

Conductor connection contact (1) according to one of the preceding claims, characterized in that the direction of extension is on the

Insulation-clamping contact connection (2) clamped wire bridge (19) is aligned transversely to the plug-in direction of the plug-in contact connection (8, 8a).

Conductor connection contact (1) according to one of the preceding claims, characterized in that a material tab (33) projects from the connection surface (9) in the direction of the insulation displacement contact connection 2).

Conductor connection contact (1) according to one of the preceding claims, characterized in that the at least one clamping tongue (1 1) has a kink or a bend (36) in an area upstream of the respective clamping edge (15).

Conductor connection contact (1) according to one of the preceding claims, characterized in that the clamping tongues (1 1) which are bent towards one another are aligned at a greater angle to one another in the area adjacent to the connection surface (9) than in the area adjacent to the clamping edge (15). adjacent area.

Conductor connection contact according to one of the preceding claims, characterized in that the insertion direction (S) for inserting an electrical conductor into the plug contact connection (8, 8a) runs essentially perpendicular to the spatial extent of at least one of the solder connection surfaces (13a, 13b).

Conductor connection contact (1) according to one of the preceding claims, characterized in that on one edge of the plug opening (10) there is a spring-elastic clamping tongue (1 1) and on one of this edge edge counter- A conductor insertion tongue (1 10) is arranged on the overlying edge of the plug opening (10), the contact tongue (1 1) and the conductor insertion tongue (1 10) being bent out from one another. 12. Conductor connection contact (1) according to one of the preceding claims, characterized in that the conductor connection contact has a further plug contact connection (8b), the insertion direction (W) of which for inserting a conductor into the further plug connection (8b) is substantially orthogonal to an insertion direction (S ) of the plug contact connection (8, 8a) formed on the connection surface (9).

Conductor connection contact according to the preceding claim, characterized in that the further plug contact connection (8b) is formed on a foot section (14) of the conductor connection contact (1).

Circuit board arrangement (16) with a circuit board (17a, 17b, 17c, 17d, 17e), wherein a conductor connection contact (1) is soldered with its soldering surfaces on the circuit board (17a, 17b, 17c, 17d, 17e) and the circuit board (17a, 17b, 17c, 17d, 17e) has a conductor feedthrough opening (18) below the plug-in opening (10).

Circuit board arrangement (16) according to claim 10, characterized in that the connection surface (9) of the conductor connection contact (1) extends parallel to the plane of the circuit board (17a, 17b, 17c, 17d, 17e) and the insulation displacement contact connection (2 ) section of the conductor connection contact (1) projects from the plane of the circuit board (17a, 17b, 17c, 17d, 17e).

Circuit board arrangement (16) according to claim 10 or 1 1, characterized in that a plurality of circuit boards (17a, 17b, 17c, 17d, 17e) are arranged adjacent to one another and the conductor connection contacts (1) on opposite edge regions of the circuit board (17a, 17b, 17c , 17d, 17e) are arranged diagonally offset from one another.