EP3387709A1

EP3387709A1 - Conductor terminal and set consisting of conductor terminal and actuation tool

Info

Publication number: EP3387709A1
Application number: EP16801187.2A
Authority: EP
Inventors: Konrad Stromiedel; Henry Stolze
Original assignee: Wago Verwaltungs GmbH
Current assignee: Wago Verwaltungs GmbH
Priority date: 2015-12-11
Filing date: 2016-11-23
Publication date: 2018-10-17
Anticipated expiration: 2036-11-23
Also published as: PL3595091T3; US11600934B2; CN108352630A; JP6932699B2; TWI710172B; DE102015121638A1; CN110571543A; DE202016106552U1; JP2019502234A; DE102015121638B4; CN111092309B; US20190393628A1; TW201728016A; US11121486B2; US10389049B2; EP3595091B1; CN108352630B; EP3595091A1; EP3387709B1; US20180294584A1

Abstract

The invention relates to a conductor terminal (1) with an insulating material housing (2) and a spring-force terminal connection (3).The spring-force terminal connection (3) has a contact body which is shaped out of a sheet element and which comprises a base portion (8), lateral wall portions (9) that protrude from the base portion (8) and are mutually spaced, and solder connection contact tongues (4). The base portion (8) together with the lateral wall portions (9) forms a conductor receiving channel for receiving an electric conductor (27), and leaf spring tongues (11) protrude from the lateral wall portions (9) so as to face one another, each said leaf spring tongue having a clamping edge (12) for clamping an electric conductor (27) received in the conductor receiving channel. The insulating material housing (2) has a conductor insertion opening (5) which leads to the conductor receiving channel on the front face. The solder connection contact tongues (4) are bent out of the plane of the base portion (8) and define a solder connection plane which is offset to the plane of the base portion (8). The solder connection contact tongues form an indented region of the base portion (8), and a closure cover (40) is provided for latching into said indented region.

Description

The invention relates to a conductor terminal with an insulating housing and with a spring-force clamping connection, which has a contact body formed from a sheet metal element with a bottom portion, from the bottom portion projecting and spaced side wall portions and Lötanschluss-contact lugs. The bottom section forms with the side wall sections a conductor receiving channel for receiving an electrical conductor. Of the side wall portions protrudes at least one leaf spring tongue, which has a clamping edge for clamping an electrical conductor received in the conductor receiving channel. The insulating housing has at the front a conductor insertion opening leading to the conductor receiving channel.

The invention further relates to a set of such a conductor terminal and an actuating tool.

Such conductor terminals are known, for example, with an integrated in the insulating material pusher from DE 1 0 2010 014 144 B4.

WO 2013/1 76859 A1 discloses an SMD printed circuit board terminal with actuating slides projecting from the upper side of the insulating housing for opening a clamping point formed at the respective spring terminal connection for clamping an electrical conductor; KR 1 0 2014 0122904 A describes a similar SMD printed circuit board terminal with a Federkraftklemmanschluss with two facing each other leaf springs, which have in Leitereinsteckrichtung facing operating tabs, and an insulating housing with a slidably inserted from an opening in the top and back actuation slide.

Based on this, it is an object of the present invention to provide an improved conductor terminal, in which the handling with automatic assembly machines improved and the visibility of the conductor terminal is reduced when used in a lamp.

The object is achieved with the conductor terminal with the features of claim 1 and with the set of such a conductor terminal and operating tool with the features of claim 1 7.

Advantageous embodiments are described in the subclaims.

For a generic conductor connection terminal, it is proposed that the solder connection contact tongues are bent out of the plane of the bottom section, open up a solder connection plane arranged offset to the plane of the bottom section and form a recessed area of the bottom section. A closure cap is provided for snapping into this indented area.

First of all, by bending out the solder terminal contact tongues from the plane of the bottom section so as to span a solder connection plane arranged offset to the plane of the floor section, a reduction in the height of an electrical circuit board provided with the conductor connection terminal is achieved. Namely, the conductor terminals can be hung in this way in an opening of the circuit board and soldered to the back of the circuit board. The conductor connection terminal is thus not simply placed on a printed circuit board and soldered to the top with Lötanschlusskontakten. By this level offset also a recessed area of the contact body is formed, in which a closure lid can be engaged. This closure lid provides a suction surface for an automatic assembly machine for handling the conductor connection terminal. In addition, it is avoided that a light trap or dark spots form when applied to the side of the Lötanschlusskontakte on the circuit board lighting elements (eg LEDs LEDs) are. Depending on the arrangement of such luminous elements and the formation of a stray scar, the depressions within the conductor terminal can be perceived as "dark spots" by a scattering discoloration.

The closure lid forms a separate part of the insulating material, which is connected to the contact body and also unfolds its function without the insulating material. The closure lid may have latching lugs which are adapted for latching in latching openings in the contact body. It is also conceivable that the closure lid has latching openings or latching edges, which are adapted for latching with latching noses of the contact body. By this locking of the closure cover with the contact body locking openings are avoided on the insulating housing, which could reduce the air and creepage distances.

The closure lid may have perpendicularly protruding fingers from a cover plate of the closure lid. Each pair of such fingers is then arranged opposite each other at a distance from each other and to the thawing Chen in the indented area to the plant each adjacent to a leading from the bottom portion to a solder terminal contact tongue connecting web of the contact body. In this way, the closure lid is engaged with a pair of such opposing fingers on opposite connecting webs with mutually facing locking elements of a pair of such fingers. While the top plate remains above the plane defined by the solder terminal contact tongues, the fingers dip into the indented region of the contact body.

The fingers can each have a trough with a locking edge. The wells are then each formed for receiving a latching lug of the contact body. Such a detent may, for example, protrude from a connecting web. The locking edge is formed by a boundary wall of the trough.

With such a depression in a finger, the stability and rigidity of the finger can be improved. The sidewalls delimiting the trough increase the resistance of the finger to elastic deformation under force and bending stress.

However, the fingers can also each have a latching nose, which is designed to engage in a latching opening of a respectively adjacent connecting web of the contact body. Between two juxtaposed fingers of the closure lid cover tongues of the cover plate can protrude on the plane of the cover plate. The cover tongues can be released by slots from the sections of the cover plate passing over into the fingers. The slots improve the clearances and creepage distances, in particular if the insulating housing dips into these slots. The cover section of the insulating housing opposite the bottom section can be completely closed on the side of the spring-force terminal connection facing away from the bottom section in the area adjoining the side wall sections and the at least one leaf spring tongue of the contact body. In this case, the insulating material housing on the back, which is opposite to the conductor insertion opening, have an actuating opening, which leads to actuating tabs of the at least one leaf spring tongue. The actuating opening is bounded by the cover portion of the insulating material to form a guide channel.

Thus, the lid portion, which adjoins the at least one actuating tab above the spring of the spring force terminal connection, constitutes a guide wall of a guide channel on which an actuating tool or an actuating tool inserted into the actuating opening or an actuating element slidably mounted in the actuating opening is guided. The actuation then takes place exclusively via the actuation opening accessible from the rear side, so that the actuation forces act only as shearing forces on solder contacts of the conductor connection terminal. The fact that the cover section is closed adjacent to the Federkraftklemman- on the side facing away from the bottom portion of the Federkraftklemmanschlusses, the at least one leaf spring tongue can be opened only by an opposite direction to the Leitereinsteckrichtung from the rear side actuating opening in the direction of fronseitigen conductor insertion opening-directed operating force. A force component acting from the lid portion to the bottom portion is avoided, so that forces acting on solder joints of the conductor terminal do not affect these solder joints. The guide channel of the actuating opening can not only through the lid portion, but also by spaced-apart lateral inner wall portions of the insulating material and a cover portion opposite the base portion are formed. Thus, the guide channel is limited on one side, on both sides or possibly on all sides or circumferentially by wall sections. A separate actuating tool is thus optimally guided to the at least one actuating tab. Optionally, however, an actuating element can also be installed in such a guide channel, which is then displaceably mounted in the actuation direction from the front side to the rear side. The base portion defining the guide channel toward the bottom portion may be spaced from the bottom portion of the spring force terminal to form a conductor receiving pocket. Thus, on the one hand, a conductor collecting pocket is provided between the bottom portion and the base portion in the conductor insertion direction behind the clamping point formed by the clamping edge of the at least one leaf spring tongue for clamping an electrical conductor. In addition, the conductor insertion region or conductor receiving region is delimited by the base section by the overlying actuation plane into which the respective actuation tab of the at least one leaf spring projects. This prevents that the operating opening are blocked by strands of an electrical conductor.

The guide channel may end immediately in front of the at least one actuating tab, so that the guide channel is formed by the actuating opening and then merges into the actuating tab of the leaf spring and the overlying lid portion. In the case of two mutually facing aligned leaf springs, the actuating opening is thus continued by the lid portion and the two spaced-apart actuating tabs. In the cover section of the insulating housing, a recess can be provided in the rear region, which lies opposite the conductor insertion opening. This indentation then goes to the operating tabs leading actuating opening over. This indentation has the advantage that it provides a positioning region into which an actuating tool is introduced from above, obliquely from the back or directly from the rear side. By the lateral boundary walls of the recess and the bottom of the recess, the actuating tool is then positioned so that it can be introduced to the adjacent to the recess actuating opening.

The bottom section can have soldering contacts which protrude from the contour of the insulating housing. These are then provided for soldering to a printed circuit board and may be SMD contacts for surface mount solder or pin contacts for through hole solder mount.

The actuating opening can be provided for receiving a separate actuating tool. It is also conceivable, however, for the actuating opening to extend from the rear side to the front side through the insulating material housing and to open out on the front side adjacent to the conductor insertion opening. This can also be an actuation of the front and / or a check of the voltage potential at the spring force terminal connection on the front side done. In this embodiment, it is particularly advantageous if an actuating element is slidably received in the actuating opening. The actuating element may have a protruding actuating portion, which is designed to apply force to the at least one actuating lug for opening the clamping point formed by the clamping edges. This projecting operating portion is then located in the interior of the insulating material in the region of the actuating tab of the leaf spring tongue.

The actuating element may comprise a head section accessible from the rear side of the insulating housing for application of force and a front section of the insulating section in the open state of the spring-force clamping connection. fabric housing have outstanding signal section. With the help of this signal portion is visible whether the nip formed on the clamping edge of the leaf spring tongue is open or not. In addition, the actuator can be pushed back by force of the signal section towards the rear again in the rest position, in which the leaf spring tongue is not affected by the actuator and exerts a resilient clamping force on an inserted and to be clamped electrical conductor.

For the purposes of the present invention, the indefinite term "a" does not mean a number word, ie, if, for example, a spring force clamping connection, a leaf spring or a conductor insertion opening or actuating opening is mentioned, then this is in the sense of "at least one" interpret.

The insulating housing can thus also have a plurality of juxtaposed conductor insertion openings. The conductor terminal may have a plurality of spring terminal connections juxtaposed in the insulating housing and associated with a respective conductor insertion opening and an operation opening.

The invention is further achieved by the set of conductor terminal and operating tool, wherein the actuating tool has a holding portion and an actuating finger for insertion into the actuating opening and for pressing apart the actuating tabs of the clamping point. In this embodiment, a separate actuating tool is provided, which can be inserted with its at least one actuating finger in an associated actuating opening of the insulating material from the back, to then be guided by movement of the actuating finger in the direction front of the insulating material between the actuating tabs to these apart to urge. The holding portion and the actuating finger are preferably at an angle to each other. This angle may preferably be in the range of about 90 degrees +/- 20 degrees. The holding section and the at least one operating angle are particularly preferably arranged at right angles to each other.

At the holding portion may be provided a plurality of juxtaposed and spaced-apart actuating fingers for insertion into in each case an associated actuating opening of a plurality of actuating openings of the insulating housing of the conductor terminal. This makes it possible to open several terminal points of a multi-pole conductor terminal simultaneously, whereby the handling is simplified.

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

Figure 1 - Perspective view of a first embodiment of a

Conductor terminal;

Figure 2 - Perspective view of the basic structure of the spring terminal connection for the conductor terminal of Figure 1;

Figure 3 - side sectional view of the conductor terminal of Figure 1 with additional operating tool;

Figure 4 - Perspective rear view of the conductor terminal of Figure 1;

Figure 5 - Perspective view of the inserted into a circuit board

Conductor connection terminal with separate operating tool;

Figure 6 - Perspective view of the conductor terminal of FIG

5 without insulating material housing;

Figure 7 - Perspective view of the conductor terminal of FIG

6 with inserted between the actuating tabs of the spring terminal connection actuating tool;

Figure 8 - Perspective view of the conductor terminal of FIG

1 diagonally from the back and from below;

Figure 9 - Perspective rear view of the inserted and soldered in a printed circuit conductor terminal; Figure 10 - side sectional view through a second embodiment of a Leiteranschlussklennnne with closure cap;

Figure 1 1 - Perspective view of the basic structure of the spring terminal connection for the conductor terminal of Figure 1 0;

Figure 13 - Perspective view of the underside of the insulating material of the conductor terminal of Figure 10;

Figure 14 - Perspective view of the underside of the conductor terminal of Figure 10 with closure cap;

Figure 15 - Perspective rear view of the conductor terminal of Figure 14 looking at the top;

FIG. 16 is a perspective front view of the conductor terminal of FIG. 15;

FIG. 17 is a side sectional view of the conductor connection terminal from FIG. 10 to 16 with additional actuating tool;

Figure 18 - Perspective view of a two-pole conductor terminal according to the second embodiment of Figure 10;

Figure 19 - Perspective rear view of a single-pole conductor terminal of the second embodiment of Figure 1 0th

FIG. 1 shows a perspective view of a first embodiment of a conductor terminal 1, which has an insulating housing 2 and a number of spring force clamp connections 3 built into the insulating housing 2. Of the Federkraftklemmanschlüsse 3 are from the Isolierstoffgehäuse 2 on the front and back each outstanding Lötanschlusskontakte 4 visible.

It is clear that the insulating material housing 2 at the front conductor insertion openings 5 for introducing one electrical conductor to a Clamping point has, which is formed at the respective spring terminal connection in the space of the insulating housing 2.

In the region of the rear side of the insulating material housing 2, which is opposite the front side with the conductor insertion opening 5, indentations 6 are present in the insulating housing 2. These indentations 6 merge into actuating openings on the rear side, which lead into the interior of the insulating housing 2. It is also clear that upstream of the conductor insertion openings 5 in each case one formed as part of the insulating housing 2 bottom base 7a and upstream of the indentations 6 is also formed as part of the insulating housing 2 bottom base 7b. This is used for mounting on a printed circuit board when the conductor terminal 1 is inserted into an opening of a printed circuit board and soldered to the solder connection contacts 4 on the back of the circuit board.

FIG. 2 shows a perspective view of the basic structure of a spring terminal connection 3 for the printed circuit board. It is clear that the Federkraftklemmanschluss 3 is integrally formed from a sheet metal element as a punched and bent part. In this case, a bottom portion 8 is provided, of which two spaced-apart side wall portions 9 protrude. By the side wall portions 9 and the bottom portion 8, a conductor receiving channel for receiving an electrical conductor is formed. The conductor receiving channel can be at least partially closed at least partially by limiting tabs 10 on the side opposite the bottom section 8, which are bent towards one another facing away from the side wall sections. The top of the conductor receiving channel can also be closed by sections of the insulating housing 2.

It can be seen that, in the illustrated embodiment, two leaf springs 1 1 protrude from the side wall sections 9 in Leitereinsteckrichtung L. The leaf spring tongues 1 1 extend approximately parallel to the bottom portion 8 and extend facing each other. At the ends of the leaf spring tongues 1 1 each clamping edges 12 are formed for clamping an electrical conductor or its stripped end. Alternatively, an embodiment with only one leaf spring tongue 1 1 is conceivable which forms a clamping point, for example, with a side wall section 9 or a tab projecting therefrom.

It is also clear that protrude to the leaf spring tongues 1 1 at the upper edges, which are opposite the bottom portion 8, actuating tabs 13. These actuating tabs 13 are exposed obliquely pointing away from each other and provided for receiving an actuating tool or actuator. They extend with their free end in Leitereinsteckrichtung L or in the direction of extension of the leaf spring tongues 1 1 and expand toward its free end in a funnel shape. With the help of such an inserted between the actuating tabs 13 actuating tool or actuator, the leaf springs 1 1 are moved away from each other to open the formed on the clamping edges 12 nip and remove a clamped electrical conductor can.

It is also clear that the plane of the bottom portion 8 in the region of the side wall portions 9 and the leaf spring tongues 1 1 is raised or offset relative to the plane of the Lötanschlusskontakte 4, in order in this way a recess or a free space on the leaf spring tongues 1 1 opposite bottom of the spring force terminal 3 to form. Thus, the conductor insertion plane formed by the conductor insertion channel for insertion of an electrical conductor of the Lötanschlussebene defined by the Lötanschlusskontakte 4 is arranged relatively far offset. The depth of the indentation or the free space should correspond at least to the thickness of a conventional printed circuit board, so that the solder connection level on the underside of the Printed circuit board and the Leiterereinsteckebene above the top of the circuit board.

FIG. 3 shows a side sectional view of the conductor connection terminal 1 from FIG. It is clear that the Lötanschlusskontakte 4 are soldered to the back of a circuit board 14 with this, when the conductor terminal 1 is inserted into an opening 1 5 of the circuit board 14. The bottom sockets 7a, 7b of the insulating housing 2 are mounted on the underside of the printed circuit board 14. The spring force clamping connections 3 are fixed in position on the insulating housing 2 by projecting projections 16 of the insulating housing 2 through associated mounting openings 17 of the bottom section 8.

It is clear that the plane of the bottom section 8 is offset in the interior of the insulating housing 2 in comparison to the plane formed by the Lötanschlusskontakte 4 level to the lid portion 1 8 of the insulating housing 2 out. The Lötanschlusskontakte 4 are thus pulled further down so as to allow a backside mounting on the circuit board 14.

It is clear that the cover portion 18 is completely closed above the Federerkraftklemman- final 3 in the region of the leaf springs 1 1 and in particular the actuating tabs 1 3. The lid portion 18 continues to the rear of the insulating housing 2, which is opposite to the conductor insertion opening 5, so as to limit an actuating opening 19 for insertion of an actuating tool 20. Opposite to the lid section 18, the actuating opening 19 is delimited by a base section 21. This base portion 21 is spaced from the bottom portion 8 of the spring force terminal 3 to limit a conductor collecting pocket 22. One of the conductor insertion opening 5 on the leaf springs 1 1 passed electrical conductor is thus performed with its stripped free end through the bottom portion 8 and the overlying base portion 21 in the conductor collecting pocket 22. The lying above the base portion 21 Free space of the actuating opening 1 9 is thus kept free of any strands of an inserted and clamped electrical conductor.

It is also clear that the actuating tabs 13 in the conductor insertion direction L project further from the clamping end 12 in the direction of the base section 21. Now, if a projecting from a holding portion 23 of the actuating tool 20 actuating finger 24 is inserted into the actuating opening 19, it acts on the opposite actuating tabs 13 and pushes them apart on an operating plane. This actuation level lies above the conductor terminal plane, which is formed by the clamping edges 1 2 and the adjoining conductor collecting pocket and which is bounded by the base portion 21 upwards to the actuating opening 19. The opening of the nip of the spring terminal connection 3 is thus effected by an actuating force acting in the direction of arrow B opposite to the conductor insertion direction L. At the same time, the actuating force B exerts a shearing force on the solder connection contacts 4 at most. A force acting transversely to the surface of the circuit board 14 actuating force is avoided, which could affect the solder joints on the Lotanschlusskontakten 4.

Furthermore, it can be seen that a housing part in the form of a closure lid 40 is latched into the indented area of the bottom section 8 from the underside. Here, too, protrude projections in the form of locking lugs 56 in latching openings in the sheet material of the bottom portion 8 a. With this closure lid 40, a suction surface for an automatic assembly machine for handling the conductor connection terminal 1 is provided. In addition, it is avoided that a light trap or dark spots are formed when luminous elements (eg light-emitting diode LEDs) are applied on the side of the solder connection contacts 4 on the printed circuit board 14. Depending on the arrangement of such luminous elements and the formation of a diffusing screen, the be perceived by a lens as "dark spots" within the conductor terminal 1.

The closure lid 40 is optional. Without such a closure cap 40 u u. Also, the bottom portion 8 itself be used as a suction for an automatic assembly machine.

FIG. 4 shows a perspective rear view of the conductor connection terminal 1 from FIGS. 1 and 3. It is clear that the indentations 6 are each bounded by the base portion 21 as a bottom surface and opposed inner wall surfaces 25 of the insulating housing 2. Hit the help of these recesses, the introduction of the actuating tool 21 is facilitated in the Betätigungsseinbuchtung 19 by the recess 6 provides a funnel-shaped insertion area.

FIG. 5 shows a perspective view of the conductor connection terminal 1 inserted into a printed circuit board 14. It is clear that the circuit board 14 has a rectangular opening into which the conductor terminal 1 is inserted from the bottom. The conductor insertion opening 5 opens but at the level of the top of the circuit board 14 or possibly slightly above. By such an installation, the height of an electrical device compared to the simple soldering of a simple conductor terminal 1 can be reduced to the top of the circuit board 14. FIG. 6 shows a perspective view of the conductor connection terminal 1 from FIG. 5 without insulating housing 2. The position of the juxtaposed several Federkraftklemmanschlüsse 3 in the receiving opening 15 of the circuit board 14 is visible. It is clear that of the leaf springs 1 1 on the upper side, which is opposite to the bottom portion 8, each protrude actuating tabs 13. These extend from the end regions of the leaf spring tongues 11 with the clamping edges 12 via the clamping channels. 12 beyond. A pair of such actuating tabs 1 3 of a spring clamp terminal 3 is bent away from one another with their free ends facing away from one another to form an insertion funnel for the actuating finger 24 of an actuating tool 20.

In the illustrated rest position, the clamping edges 12 of the leaf springs 1 1 of a Federkraftklemmanschlusses 3 by the spring force of the leaf springs 1 1 are directed towards each other. The clamping edges 1 2 can then rest against each other without clamped electrical conductor. If now an electrical conductor on the side walls 9 and the leaf springs 1 1 is guided over to the clamping edges 12, then this is clamped by the clamping force of the leaf springs to the spring force clamping terminal 3.

FIG. 7 shows the arrangement on FIG. 6 with printed circuit board 14 and spring-force clamping connections 3 inserted therein into a receiving opening.

Now, the operating tool 20 is inserted into the front, right spring clamp terminal so that the actuating finger 24 is placed between the actuating tabs 13. As a result, the two mutually opposite leaf springs 11 of the spring-force terminal connection 3 are moved away from one another so as to open the clamping point formed at the mutually opposite clamping edges 12 for clamping an electrical conductor. It is clear that the actuating finger 24 is located on a plane above the clamping plane formed by the leaf springs 1 1 for clamping an electrical conductor. It is also clear that the actuating finger 24 is moved in a direction which corresponds substantially to the extension direction of the leaf springs 1 1 and is approximately parallel to the surface of the circuit board 14.

FIG. 8 shows a perspective rear view of the conductor connection terminal 1. It is once again clear that the insulating housing 2 with projections 1 6 in bearing openings 17 of the bottom portion 8 of a spring kraftklemmanschlusses 3 is fixed in position. It can also be seen that the solder connection contacts 4 are bent around on the support plane of the bottom base 7a, 7b of the insulating material housing 2. Figure 9 shows a view of Leiteranschlussklennnne 1 of Figure 8 in the assembled state, in which the Leiteranschlussklemmel is inserted from the back into a receiving opening 15 of the circuit board 14. It is clear that the Lötanschlusskontakte 4 now rest on the surface of the back of the circuit board 14 to be soldered there by Oberflächenlötmontage with the circuit board 14.

Due to the fact that the actuating opening necessarily reduces the actuating force to an actuating force acting approximately parallel to the surface of the printed circuit board 14, the solder connection contacts 4 or the soldering connections there are loaded with the printed circuit board 14 only for shearing forces.

Again, the closure lid 40 can be seen, which closes the indented portions of the bottom portion 8. FIG. 10 shows a side sectional view through a second embodiment of a conductor connection terminal 1 in a state inserted in a printed circuit board 14. The spring-force clamping connection 3 of the conductor connection terminal 1 has, as in the first exemplary embodiment, a contact body formed from a sheet metal element with a bottom section 8, spaced-apart side wall sections 9 from the bottom section 8 and soldered terminal contact tongues 4. The soldered terminal contact tongues 4 are made the plane of the bottom portion 8, to which the leaf spring tongues 1 1 adjoin, bent out and clamp a displaced to the plane of the bottom portion 8 Lötanschlussebene. It is clear that the conductor connection terminal 1 is in turn inserted into an opening of the printed circuit board 14, so that the Lötanschlussebene with the solder terminal contact tongues 4 on the side of the circuit board 14, which is opposite to the conductor insertion side with the conductor insertion opening 5.

By this plane offset a clearance for locking a closure lid 40 is created.

In contrast to the first embodiment, the closure lid 40 has perpendicularly projecting fingers 42a, 42b from the lid plate 41 of the closure lid. Such a pair of such spaced-apart fingers 42a, 42b. These fingers 42 a, 42 b are adapted to the spring force clamping connection 3 in such a way that they dip into the indented area of the spring force clamping connection 3 and bear against the connecting webs 50, which connect the bottom section 8 to the contact tongues 4. The connecting webs 50 delimit the indented area and are aligned transversely to the plane of the bottom section 8 and the plane spanned by the solder terminal contact tongues 4.

It can be seen that 50 latching lugs 57 are formed on the connecting webs, which together with a latching contour of the respective adjacent finger 42a, 42b form a stop for latching the closure lid 40 to the spring force clamping connection 30. The locking lugs 57 are formed in the illustrated embodiment of the sheet material of the spring terminal connection 3. For this purpose, material tabs are cut free from the sheet metal material and are made obliquely out of the plane of the connecting webs 50.

This can be seen more clearly from FIG. Figure 1 1 shows a perspective view of the basic structure of the spring terminal connection 3 from the bottom. In this case, reference may be made essentially to the description of the spring-force clamping connection to FIG. For latching the closure lid 40, however, no latching openings are provided in this exemplary embodiment. ments, but locking lugs 57 provided in the form of out of the plane of the connecting webs 50 obliquely exposed material tabs. FIG. 12 shows a perspective view of the closure lid 40 of the spring-force clamping connection 3 from FIG. 10. It is clear that in each case a pair of opposing fingers 42a, 42b are arranged at a distance from each other for each spring force detection connection 3. These fingers 42a, 42b protrude transversely from the plane of the cover plate 41. The latching contour of the fingers 42a, 42b for latching with the latching lugs 57 is executed in this exemplary embodiment by a recess 45 introduced into a finger 42a, 42b. For latching with a protruding latching lug 57 of the spring-force clamping connection 3, the latching contour must in any case have a stop surface cooperating with the latching lug 57, which does not necessarily have to be designed with a recess 45.

Furthermore, it can be seen that covering tongues 43 of the cover plate 41 are present in each case between two adjacent fingers 42a and 42b, which protrude on the plane of the cover plate 41 and are released by slots 44 from the sections of the cover plate 41 merging into the fingers 42a, 42b are. These slots 44 serve to receive housing wall sections of the insulating housing 2 and contribute to increasing the creepage and clearance distances between the spring power terminal 3 and the outside and thus to improved electrical insulation.

Figure 13 shows a perspective view of the underside of the insulating housing 2. It can be seen that this insulating housing 2 is divided by partitions 46 into chambers. In this case, spaced-apart receiving chambers for receiving in each case a spring force terminal connection are provided by an empty chamber. The web-like remaining wall portions 47 at the upper edge of the intermediate walls 46 are for immersion in each provided an associated slot 44 of the closure lid 40. The closure lid 40 dips into the recessed area of the intermediate walls 46 in order to terminate flush with the plane of the underside of the insulating housing 2.

It can also be seen that the receiving chambers for the spring-force clamping connections 3 have depressions 48 to the front and rear through which the solder connection areas, i. which are immersed in the connecting webs 50 subsequent sections of the spring terminal connection 3.

In the illustrated embodiment, projecting on both sides of the recesses 48 locking projections 49 a. These can be part-circular as shown. Other forms are conceivable. A spring force clamping connection 3 inserted in a receiving chamber is fixed in position with this locking projection 49a. For this purpose, the spring force clamping connections 3, as shown in FIG. 11, have corresponding locking recesses 49b into which the locking projections 49a dip.

FIG. 14 shows a perspective view of the second embodiment of the conductor connection terminal 1 from the underside. The insulating material housing

2 is equipped with spring terminal connections 3 whose Lötanschlussflächen protrude from the insulating 2. It is clear that the closure lid 40 is inserted flush into recesses of the insulating housing 2, so that the fingers 42a, 42b protrude into the indented region of the spring-force clamping connections 3 and there with the spring force clamping connections

3 lock.

It can also be seen that the cover tongues 43 project the cover in the case of web-like wall sections 47 into the slots 44 between in each case a covering tongue 43 and the sections of the cover plate 41 which pass over into a finger 42a, 42b. Thus, the closure lid 40th Fixed in position and the clearance and creepage distances are optimized.

FIG. 15 shows a perspective view of the conductor connection terminal 1 from FIG. 14 from the top side with respect to the rear side. On the back of actuating openings 19 are present, leading to the actuating tabs 13 of a spring terminal connection 3.

On the upper side of the insulating housing 2, test openings 51 are optionally introduced. Test pins may be inserted into the test holes 51 to measure the electric potential at a spring force terminal 3. It is also conceivable that the test openings 51 are used as actuation openings.

Furthermore, it is clear that the insulating housing 2 in particular on the front and back has a collar 52. This collar 52 is provided to rest on the underside of a printed circuit board to hang the conductor terminal 1 on a circuit board and to reduce the forces acting on the solder joints on the solder pads with the circuit board forces as much as possible.

FIG. 16 shows the conductor connection terminal 1 from FIG. 15 from the front side. It can be seen that the conductor insertion openings 5 are introduced at the front side. As in FIG. 15, it is also clear here that the closure lid 40 merges flush into the collar 52 of the insulating housing 2, so that the collar 52, together with the closure lid 40, covers the insulating material housing 2 on the underside.

FIG. 17 shows the conductor connection terminal 1 from FIG. 10 in the side sectional view with additional actuating tool 20. Tool 20 has a handle portion 53 from which an actuating finger 24 protrudes. The actuating finger 24 is designed as a plate-shaped or rod-shaped element with a round or preferably angular cross section and designed for insertion into an actuating opening 19. The actuating finger 24 then passes between two actuating lugs 13 of a spring terminal connection 3, in order to push apart in this way with a pair of actuating tabs 13 respectively connected leaf spring tongues 1 1 and thus formed by the leaf spring tongues 1 1 terminal point for clamping an electrical conductor to open.

Incidentally, reference may be made to the comments on FIG. In any case, it is clear that the underside of the conductor connection terminal 1 is covered by the closure cover 40. FIG. 18 shows the second embodiment of the conductor connection terminal 1 according to FIG. 14, now in a two-pole embodiment. Here, reference can again be made essentially to the comments on FIG. 14. In this two-pole conductor connection terminal 1, two spring-force clamping connections 3, each spatially separated from one another by an intermediate chamber, are provided, each with associated conductor insertion openings 5 in the insulating housing 2.

Figure 1 9 shows an embodiment of this conductor terminal 1 in the single-pole variant. In this case, only a single Federkraftklemmanschluss 3 is present, which dips into a receiving opening of the insulating housing 2, which is covered by the closure cover 40.

Claims

A conductor terminal (1) comprising an insulating housing (2) and a spring force clamping terminal (3) comprising a contact body formed of a sheet member having a bottom portion (8), spaced side wall portions (9) projecting from the bottom portion (8) and solder terminal contact tongues (4), wherein the bottom portion (8) with the side wall portions (9) form a conductor receiving channel for receiving an electrical conductor (27), wherein of the side wall portions (9) at least one leaf spring tongue (1 1) protrudes, a clamping edge (12 ) for clamping an electrical conductor (27) accommodated in the conductor receiving channel, and wherein the insulating housing (2) has at the front a conductor insertion opening (5) leading to the conductor receiving channel, characterized in that the solder terminal contact tongues (4) are out of the plane of the bottom section (8) are bent out, one to the plane of the bottom portion (8) staggered Lötanschlusseben e span and one

formed recessed area of the bottom portion (8), and that a

Closure cover (40) is provided for locking in this indented area.

Conductor terminal (1) according to claim 1, characterized in that the closure lid (40) has latching lugs (56) which engage in the latching in

Detent openings (17) are adapted in the contact body.

Conductor terminal (1) according to claim 1 or 2, characterized in that the closure cover (40) has latching openings or latching edges, which are adapted for latching with latching noses (57) of the contact body. Conductor terminal (1) according to any one of claims 1 to 3, characterized in that the closure lid (40) of a cover plate (41) of the closure lid (40) perpendicular protruding fingers (42a, 42b), wherein in each case a pair of such fingers (42a , 42b) are opposite one another in the

Spaced apart from each other and adapted for immersion in the indented area to the plant each adjacent to a from the bottom portion (8) leading to a solder terminal contact tongue (4) connecting web (50) of the contact body.

Conductor terminal (1) according to claim 4, characterized in that the fingers (42a, 42b) each have a latching contour, wherein the latching contours are each formed for latching with a latching lug (57) of the contact body.

Conductor terminal (1) according to claim 4, characterized in that the fingers (42a, 42b) each have a latching nose, which is designed for engagement in a latching opening (17) of a respectively adjacent connecting web (50) of the contact body. Conductor terminal (1) according to one of claims 4 to 6, characterized in that protrude between two juxtaposed fingers (42a, 42b) of the closure cover (40) Abdeckzungen (43) of the cover plate (41) on the level of the cover plate (41) the cover tabs (43) passing through slots (44) of those passing into the fingers (42a, 42b)

Sections of the cover plate (41) are released.

Conductor terminal (1) according to any one of the preceding claims, characterized in that the lid portion (18) of the insulating material (2) opposite the bottom portion (8) is directed upward on the side of the spring force terminal connection (3) facing away from the base portion (8) the side wall portions (9) and the leaf spring tongues (1 1) of the

Contact body adjacent region is completely closed, that of the leaf spring tongues (1 1) actuating tabs (13) of the bottom portion (8) protrude away, and that the Isolierstoffgehäuse (2) on the back, which is opposite to the conductor insertion opening (5), an actuating opening (19) which leads to the actuating tabs (13), wherein the

Actuation opening (19) to form a guide channel through the

Cover portion (18) of the insulating housing (2) is limited.

Conductor terminal (1) according to claim 8, characterized in that the guide channel of the actuating opening (19) through the lid portion (18) by spaced apart side inner wall portions of the

Insulating housing (2) and by a lid portion (18) and the opposite base portions (21) is formed.

Conductor terminal (1) according to claim 9, characterized in that the base portion (21) to form a conductor receiving pocket (22) from the bottom portion (8) of the spring force terminal (3) is spaced.

Conductor terminal (1) according to any one of claims 8 to 10, characterized in that the guide channel immediately in front of the

Actuation tabs (13) ends.

Conductor terminal (1) according to any one of claims 8 to 1 1, characterized in that the actuating opening (19) from the back to the front through the Isolierstoffgehäuse (2) extends through and opens at the front adjacent to the conductor insertion opening (5).

Conductor terminal (1) according to claim 12, characterized in that an actuating element (26) is slidably received in the actuating opening (19), wherein the actuating element (26) has a projecting actuating portion (29) for applying the force

Actuation tabs (13) for opening the formed by the clamping edges (12) clamping point is formed.

14. conductor terminal (1) according to claim 13, characterized in that the Betatigungselennent (26) accessible from the rear of the insulating housing (2) for applying force head portion (30) and in the open state of the spring terminal connection (3) from the front side of the insulating material (2) has outstanding signal portion (32).

15. Conductor terminal (1) according to one of the preceding claims,

characterized in that on the lid portion (18) of the

Insulating housing (2) in the back area, the

Conductor insertion opening (5) opposite, a recess (6) is provided, which merges into an actuating opening (19).

16. conductor terminal (1) according to one of the preceding claims,

characterized in that the insulating material housing (2) has a plurality

has conductor insertion openings (5) arranged next to one another, and in that the conductor connection terminal (1) has a plurality of spring terminal connections (3) accommodated next to one another in the insulating housing (2) and assigned to a respective conductor insertion opening (5). 17. Set of conductor terminal (1) according to one of claims 8 to 14 and actuating tool (20), characterized in that the

Operating tool (20) has a holding portion (23) and one for insertion into the actuating opening (19) and for pushing apart the

Actuation tabs (13) designed to open the nip

Actuating finger (24) has.

18. Set according to claim 17, characterized in that the holding portion (23) and the actuating finger (24) are at an angle to each other. 19. Set according to one of claims 17 or 18, characterized in that on the holding portion (23) a plurality of juxtaposed and spaced apart actuating fingers (24) for insertion into each associated actuating opening (19) of a plurality of Actuating openings (19) of the insulating housing (2) of the conductor connection terminal (1) are provided.