EP3787121A1 - Conductor connecting terminal - Google Patents

Abstract

A conductor connection terminal (29) with a busbar piece (2) and a clamping spring (3) is described. The clamping spring (3) has a clamping leg (13) oriented towards the busbar piece (2) to form a clamping point for clamping an electrical conductor (36) between the clamping leg (13) and the busbar piece (2), and one adjoining the clamping leg (13) Spring bow (12) and a contact leg (9) which extends with a vertical section (10) transversely to the busbar piece (2). The vertical section (10) of the contact leg (9) has a recess (19) with the edge edges encompassing the busbar section (2). The busbar section (2) has a contact wall (28) which is adjacent to the wall surface of the busbar section (2) extending vertical section (10) of the contact leg (9), which is on the side of the vertical section (10) facing away from the clamping leg (13), and for supporting the vertical section (10) of the contact leg (9) with this facing away from the clamping leg (13) Wall surface is formed on the bearing wall (28).

Description

The invention relates to a conductor connection terminal with a busbar piece and a clamping spring, which has a clamping leg which is oriented towards the busbar piece to form a clamping point for clamping an electrical conductor between the clamping point and the busbar piece, a spring bow adjoining the clamping leg and a contact leg which is connected to a vertical section extending transversely to the busbar piece. The vertical section of the contact leg has a recess with edge edges encompassing the busbar piece.

DE 10 2010 025 930 A1 shows such a connection terminal with a clamping spring and a busbar piece. The contact insert formed from the clamping spring and busbar piece is built into an insulating material housing. The clamping spring is designed as an open loop and has a contact leg and a clamping leg. The contact leg rests longitudinally on the current bar. The current bar is passed through a recess in the clamping leg.

DE 10 2009 004 513 A1 discloses a conductor connection terminal with a clamping spring and a U-shaped bent receiving element. The section adjoining the spring arch forms a bearing leg resting against the receiving element. A limiting leg is bent from this bearing leg to a tab of the receiving element which, together with the clamping leg, forms a clamping point for clamping an electrical conductor. The bearing leg has a nose element which can be positioned in an opening of the receiving element surrounding the clamping spring in order to fix the limiting leg. The edge region of the delimiting leg rests against the receiving element.

Based on this, the object of the present invention is to create an improved connection terminal in which the clamping spring is connected to the busbar piece in a self-supporting manner in a structurally simple manner and the clamping spring is relatively stable and stiff.

The object is achieved by the conductor connection terminal with the features of claim 1. Advantageous embodiments are described in the subclaims.

For a conductor connection terminal of the type mentioned at the outset, it is proposed that the busbar piece have an abutment wall which is arranged adjacent to a wall surface of the vertical section of the abutment limb, which is on the side of the vertical section facing away from the clamping limb. The contact wall is designed to support the vertical section of the contact leg with the wall surface facing away from the clamping leg. The vertical section of the contact leg forms a plane which is oriented perpendicular to the main direction of extent of the busbar section. The main direction of extent of the busbar piece is determined by the direction between a clamping section and the free end of a fork contact socket which is opposite the clamping section.

By supporting the vertical section of the contact leg on the busbar piece, which dips into the recess, and with the support of this vertical section on the side opposite the clamping leg, the clamping spring is received in a stable and stiffening manner on the busbar piece and supported there. A self-supporting clamping insert is formed from the clamping spring and the busbar piece, in which the forces occurring when an electrical conductor is clamped or when the clamping point is opened are essentially absorbed in a closed system between the clamping leg and the busbar piece.

“Transversely” is understood to mean that the vertical section is oriented towards the busbar piece. An exactly perpendicular arrangement at an angle of 90 ° is not required.

With the help of the support of the vertical section on the wall surface of the contact wall facing away from the clamping limb, tilting of the clamping spring is changed when the clamping limb is displaced away from the busbar piece.

The contact leg is mounted on the busbar piece with the edge edges delimiting the recess, in that these edge edges encompass the busbar piece. The term “reaching around” is understood to mean that the busbar adjoins marginal edges of the recess on at least two sides. The recess can be designed as a bay that is open on at least one side. The marginal edges of the recess adjoin, for example, on the top and the adjoining two narrow side edges of the busbar section or on the top, a narrow side edge and the underside of the busbar section.

On the recess of the vertical section of the contact leg, a transverse web can be formed which engages under the busbar piece. The busbar piece is then inserted into this recess. The edge of the vertical section opposite the transverse web, which delimits the recess, is then supported on the busbar piece. With the help of this transverse web and the edge edge opposite the transverse web, which both delimit the recess, the contact leg is held on the busbar section on the upper side and the underside of the busbar section. The contact leg can be firmly clamped in the busbar piece or can be easily moved with a limited tolerance. In any case, the contact leg is fixed in position on the busbar piece in this way.

The vertical section of the contact leg can have an indentation at a distance from the transverse web. A finger dipping into the indentation then protrudes from the installation wall. Thus, at a distance from the recess of the contact leg, on which the clamping spring is supported on the busbar piece, a further position fixing is provided at a distance from the recess. Tilting of the clamping spring is prevented by the fingers of the contact wall protruding from the contact wall and dipping into the indentation of the contact leg.

The finger can grip around the vertical section of the contact leg and rest with its end on the side of the vertical section which is opposite the contact surface of the vertical section on the contact wall. The contact limb is fixed in position on the contact wall by the contact limb resting on the one hand against the wall surface of the contact wall facing away from the clamping limb and on the other hand against the finger on the side of the contact limb facing the clamping limb.

A horizontal section of the contact leg extending in the main direction of extent of the busbar piece can be bent away from the vertical section. This horizontal section is arranged at a distance from the busbar piece and merges into the spring arch. In this way, a spring arm is provided at a distance from the busbar, which is supported very stably by the vertical section. This horizontal section makes it possible, e.g. in connection with an actuating lever, to relieve the clamping spring when it is opened and to provide a soft spring for opening the clamping point. For this purpose, a pressure acting on the horizontal section is reduced or canceled by an actuating lever. In the closed state, on the other hand, the actuating lever can be supported on the horizontal section, so that a significantly more rigid clamping spring is then provided.

The horizontal section of the contact insert formed from the busbar piece and clamping spring can be exposed without a surrounding insulating material housing and have no support on the busbar piece. The only support for the horizontal section is then possibly provided by the insulating material housing or an actuating element arranged on or in it.

The conductor connection terminal can have an insulating material housing with a clamping insert which is formed from such a busbar piece and a clamping spring. The insulating material housing can have a conductor insertion opening (conductor insertion channel) in a manner known per se in order to guide an electrical conductor to the clamping point formed by the clamping spring and the busbar piece.

It should be noted that in the context of the present invention, the indefinite article “a” is not to be understood as a numerical word. In this respect, several clamping inserts can also be present in the insulating material housing. A busbar piece can also be part of a common busbar for several clamping inserts.

It is conceivable that an actuating element is mounted pivotably or displaceably in the insulating material housing. The actuating element is then designed to act on an actuating section of the clamping leg when the actuating element is pivoted or displaced. With such an actuating element, the clamping point for clamping the electrical conductor can thus be opened. In addition, it can optionally also be used to apply pressure to the horizontal section in the clamped-on state and thus to stiffen the spring clamping line.

The busbar piece can have two fork prongs which are arranged at a distance from one another and are aligned facing one another to form a fork plug contact socket. The contact wall is then formed by a side edge of a connecting web which connects the two fork prongs to one another. The conductor connection terminal thus not only has a clamping contact for connecting an electrical conductor, but also a plug contact for connecting a mating contact to the fork plug contact socket. The connecting web between the fork prongs required for the fork prongs is used as a contact wall at the same time. This contact wall is formed transversely to the fork prongs on which the vertical section of the contact leg rests. The fork plug contact socket can thus optimally with the vertical section of the contact leg cooperate to store the vertical section on the connecting web of the fork plug contact socket.

A tab, which rests against the vertical section and faces the clamping leg, can protrude from the connecting web. In this way, the tab can not only secure the clamping spring on the busbar piece. It can also contribute to the fact that a conductor stop is not only formed by the vertical section, but also at least partially by the tab.

In its area on which the vertical section of the contact leg is supported, the busbar piece can have a cross-sectional profile designed in the shape of a wave with beads and elevations. By means of such a profile design with beads and elevations, the busbar piece is stiffened and the force dissipation from the contact leg to the busbar piece is improved. The wave-shaped cross-sectional profile can be implemented very easily in the forming process for shaping the busbar section.

From the vertical section of the contact leg, a horizontal section of the contact leg extending in the main direction of extent of the busbar piece can be bent, which is arranged at a distance from the busbar piece and merges into the spring curve. A holding section which extends towards the busbar piece and is mounted on the busbar piece can protrude from this horizontal section. In this way, a further mounting of the horizontal section on the busbar piece is provided on the one hand on the vertical section of the contact leg and on the other hand adjacent to the spring arch with the holding section, by means of which the forces occurring on the contact insert are often well absorbed in a structurally simple and compact manner. With the further holding section, a self-supporting, stable contact insert with a relatively stiff spring characteristic is realized.

The contact wall, which supports the vertical section, can be formed by an edge of the busbar section facing the vertical section. It is conceivable that the contact wall by a facing the vertical section Marginal edge of a connecting web which connects the fork prongs of the busbar piece to one another and / or is formed by a marginal edge of a fork prong which lies on the end of the fork prong opposite the clamping end of the fork prong. In this way, a marginal edge, ie the narrow side of an end face of part of the busbar section, is used as a contact wall.

The vertical section can have at least one side web which dips into an associated lateral recess of the busbar piece. In this way, the vertical section is not only supported on the contact wall, but also fixed in position on the busbar piece.

The contact leg can have a contact leg adjoining the vertical section and bent over by the vertical section, which abuts the clamping section on the side of the clamping section of the busbar piece facing away from the clamping leg and is spaced from the clamping section in a test area. This contact section, which is bent away from the vertical section and engages under the clamping section of the busbar piece, provides an additional flat mounting of the clamping spring on the busbar piece. This contact leg also forms, with the clamping section of the busbar piece, a resilient test connection for a test pin, which can be inserted in the test area between the clamping section and the contact leg. In this way, the voltage potential or signals applied to the conductor connection terminal can be measured in a simple and reliable manner below the conductor terminal contact.

Figur 1 -

Perspektivische Ansicht eines aus dem Stromschienenstück und der Klemmfeder gebildeten Klemmeinsatzes;

Figur 2 -

Perspektivische Ansicht der Klemmfeder des Klemmeinsatzes aus Figur 1;

Figur 3 -

Seitenansicht des Klemmeinsatzes aus Figur 1 mit Schnittlinie A-A;

Figur 4 -

Querschnittsansicht durch den Klemmeinsatz aus Figur 3 im Schnitt A-A;

Figur 5 -

Rückansicht auf den Vertikalabschnitt des Anlageschenkels;

Figur 6 -

Seitenansicht einer Leiteranschlussklemme mit einem Kontakteinsatz aus Figur 1 und Betätigungshebel;

Figur 7 -

Draufsicht auf eine 2-polige Leiteranschlussklemme nach Figur 6;

Figur 8 -

Schnittansicht durch eine andere Ausführungsform der Auflagerung des Anlageschenkels auf dem Stromschienenstück mit wellenförmigem Profil des Stromschienenstücks;

Figur 9 -

perspektivische Explosionsansicht einer weiteren Ausführungsform einer Leiteranschlussklemme mit zusätzlicher Lasche am Stromschienenstück;

Figur 10 -

perspektivische Rückseitenansicht der Leiteranschlussklemme aus Figur 9;

Figur 11 -

perspektivische Explosionsansicht der Leiteranschlussklemme aus Figur 9 und 10 von der gegenüberliegenden Seite aus gesehen;

Figur 12 -

perspektivische Ansicht der Leiteranschlussklemme aus Figur 9 bis 11 im zusammengebauten Zustand;

Figur 13 -

perspektivische Rückseitenansicht der zusammengebauten Leiteranschlussklemme aus Figur 12.

The invention is explained in more detail on the basis of exemplary embodiments with the accompanying drawings. Show it:

Figure 1 -

Perspective view of a clamping insert formed from the busbar piece and the clamping spring;

Figure 2 -

Perspective view of the clamping spring of the clamping insert from Figure 1 ;

Figure 3 -

Side view of the clamping insert Figure 1 with section line AA;

Figure 4 -

Cross-sectional view through the clamping insert Figure 3 in section AA;

Figure 5 -

Rear view of the vertical section of the contact leg;

Figure 6 -

Side view of a conductor connection terminal with a contact insert Figure 1 and operating lever;

Figure 7 -

Top view of a 2-pole conductor connection terminal according to Figure 6 ;

Figure 8 -

Sectional view through another embodiment of the support of the contact leg on the busbar piece with a wave-shaped profile of the busbar piece;

Figure 9 -

perspective exploded view of a further embodiment of a conductor connection terminal with an additional tab on the busbar section;

Figure 10 -

perspective rear view of the conductor connection terminal Figure 9 ;

Figure 11 -

perspective exploded view of the conductor connection terminal Figures 9 and 10 seen from the opposite side;

Figure 12 -

perspective view of the conductor connection terminal Figures 9 to 11 in the assembled state;

Figure 13 -

perspective rear view of the assembled conductor connection terminal Figure 12 .

Figure 1 shows a perspective view of a clamping insert 1, which is formed from a busbar piece 2 and a clamping spring 3. This terminal insert 1 can be used directly as a conductor connection terminal without an insulating housing be used. As a rule, however, a conductor connection terminal is formed by such a terminal insert 1 which is built into an insulating material housing.

It is clear that the busbar piece 2 is formed in one piece from a sheet of metal and on its side facing away from the clamping spring 3 has a fork plug contact socket 5 formed from two mutually opposite fork prongs 4a, 4b. The fork prongs 4a, 4b are aligned facing each other and each have a protrusion 6a, 6b at their freely movable end, between which a contact pin can be plugged into. On the opposite sides of the protrusion 6a, 6b, a trough 7 can be made in each case in order to guide the contact pin to be clamped.

The two opposite fork prongs 4a, 4b are connected to one another by a connecting web 8. This connecting web 8 protrudes from the side edges of the fork prongs 4a, 4b and is formed integrally with these fork prongs 4a, 4b from the same material.

The clamping spring 3 has a contact leg 9 which is formed from a vertical section 10 and a horizontal section 11 bent from it. A spring bow 12 adjoins the contact leg 9 and merges into a clamping leg 13. The clamping leg 13 has a spring tongue 15 directed towards the clamping portion 14 extending away from the lower fork prong 4a, the free end of which has a clamping edge for clamping an electrical conductor between the clamping tongue 15 and the clamping portion 14 of the busbar section 2. The clamping section 14 has a protrusion or clamping edge 16 which forms a defined and reduced contact surface for the electrical conductor clamped between the clamping tongue 15 and the clamping edge 16.

It becomes clear that the clamping leg 13 has an actuating tab 17 on at least one side, which protrudes laterally at least towards the clamping tongue 15. It serves as a support for an actuating element in order to move the clamping leg 13 in the direction of the horizontal section 11 of the contact leg 9 and away from the clamping section 14 of the busbar section 2. Using this Actuating section 17 can thus be opened the clamping point for clamping an electrical conductor.

It is also clear that the clamping section 14 of the busbar section 2 has a run-in bevel 18 at a free end with which an electrical conductor is guided towards the clamping edge 16.

The vertical section 10 of the contact leg 9 is aligned transversely to the clamping section 14 of the busbar section 2 and the adjoining first fork prong 4a. The busbar piece dips into a recess 19 in the vertical section 10. This recess 19 is delimited by a transverse web 20 which rests on the underside of the busbar section 2, which lies opposite the connecting web 8. The edge of the vertical section 10, which lies opposite the transverse web 20 and which delimits the recess 19, rests on the upper side of the busbar section.

The recess 19 is designed as a bay open on one side, so that the clamping spring 3 can be pushed on transversely to the direction in which the busbar section 2 extends.

On the second fork prong 4b, a finger 21 is arranged at a distance from the recess 19, which dips into an indentation 22 on the vertical section 10 and engages around the vertical section 10. The vertical section 10 is supported on an abutment wall which is provided by the side edge of the connecting web 8. The vertical section 10 of the contact leg 9 is thus carried by the wall section of the connecting web 8 on the side facing away from the clamping leg 13 and is fixed in position by the finger 21 on the side facing the clamping leg 13. In addition, the vertical section 10 can rest against the end face or side edge of the fork prong 4b, which is located at the end adjacent to the protrusion 6b.

The clamping section 14 of the busbar piece 2 is opposite the fork prongs 4b, in the extension of which the clamping section 14 is provided, in the direction facing away from the clamping spring 3 angled or cranked or arranged offset. The crank is provided on the side of the vertical section 10 facing the clamping leg 13 in the busbar piece 2. The transverse web 20 of the vertical section 10 arranged on the underside of the fork prong 4b is bent or bent out of the plane of the vertical section 10 in the direction of the angled or offset clamping section 14. The transverse web 20 is supported on the busbar piece 2 so that spring forces caused by the deflection of the clamping spring 3 can be absorbed or compensated for by this support of the transverse web 20 in such a way that no elastic deformation or deflection of the clamping portion 14 takes place when a clamping force acts on the clamping section 14 due to the spring force of the deflected clamping spring 3.

Figure 2 shows a perspective view of the clamping spring 3, which is formed from a spring plate. This is an elastically resilient material, for example a metal sheet made from an alloy containing chromium.

It can be seen that the clamping leg 13 is followed by a spring bow 12 which connects the clamping leg 13 to the contact leg 9. The clamping leg 13 has a first section which adjoins the spring bow 12 and which merges into the clamping tongue 15 after a bend. The end region 23 of the clamping tongue 15 with the clamping edge 24 is somewhat widened. In the bending area, an actuating tab 17 protrudes laterally from the edge of the clamping leg 13 on at least one side.

It is also clear that the contact leg 19 is formed from a horizontal section 11 and a vertical section 10 bent away from it. The horizontal section 11 can in turn have bends in order to form regions lying on at least two planes.

It can be seen that the vertical section 10 has a recess 19 delimited by a lower transverse web 20 and an edge 25 opposite the transverse web 20. This recess 19 is bay-like, that is, open on one side and limited by a side web 26 which connects the transverse web 20 to the part of the vertical section 10 that merges into the horizontal section 11.

The transverse web 20 can have a nose 27 at a distance from this side web 26, by means of which a recess is formed between the nose 27 and the side web 26. This nose 27 can dip into a recess or opening in the busbar section 2 in order to further fix the clamping spring 3 in the position on the busbar section 2. However, it is also conceivable that a lowered part of the busbar section 2 dips into this recess and the busbar section 2 otherwise also rests on the nose 27.

It is also clear that the indentation 22 is provided at a distance from the recess 19 adjacent to the horizontal section 11 on the vertical section 10. This indentation 22 is adapted to receive the finger 21 of the busbar section 2. In this way, the fixing of the position of the clamping spring 3 on the busbar piece 2 is improved.

Figure 3 FIG. 4 shows a side view of the contact insert 1 from FIG Figure 1 with a section line AA through the vertical section 10 of the clamping spring 3.

It can first be seen that the two fork prongs 4a, 4b, which are arranged at a distance from one another and facing one another, are connected to a fork plug contact socket 5 by the connecting web 8 formed integrally therewith. The narrow side edge of the connecting web 8 facing the clamping leg 13 forms a contact wall 28 on which the vertical section 10 of the clamping spring 3 is supported. It is also clear that the busbar piece 2 with the first fork prongs 4a and the clamping section 14 connected to it dips into the recess 19 of the vertical section 10. The transverse web 20 rests against the underside of the busbar section 2. This underside lies opposite the upper side of the busbar section 2 with the clamping section 14, which has the clamping edge 16 for clamping the electrical conductor and to which the clamping leg 13 is aligned. Clear is that the clamping leg 13 rests with its clamping tongue 15 in the rest state without a clamped conductor on this upper side of the busbar section 2 in the clamping section 14.

It is also clear that the finger 21 protruding from the second fork tongue 14 is passed through the vertical section 10 and engages around the vertical section 10 with its free end. The vertical section 10 thus rests against the finger 21 on the side opposite the contact wall. The vertical section 10 is held in this way on the contact wall 28 and rests on the first fork prong 4a and the adjoining part of the clamping section 14 of the busbar section 2.

Figure 4 shows a cross section through the clamping insert 1 in section AA. It becomes clear here that the finger 21 extends through the indentation 22 in the vertical section 10.

It can also be seen that the busbar piece 2 dips into the recess 19 of the vertical section 10 in the area of the first fork prong 4a in the transition to the clamping section 14, so that the vertical section 10 rests with its upper edge 25 of the recess 19 on the busbar section 2 and the opposite transverse edge 20 engages under the busbar section 2.

The view in Figure 4 is shown seen from the fork plug contact socket 5 in the direction of the spring arch 12, which is indicated by the section line AA in Figure 3 is recognizable.

Figure 5 FIG. 11 shows a rear view of the vertical section 10 of the clamping spring 3 from FIG Figure 2 . It becomes even clearer that the indentation 19 of the vertical section 10 enables the busbar piece 2 to be immersed, so that the contact leg 9 with its upper edge 25 delimiting the recess 19 can come to rest on the busbar piece 2 and the transverse web 20 delimiting the recess 19 the Busbar piece 2 engages below.

It becomes clear that the clamping spring 3 is intended to be pushed onto the busbar section 2 or mounted laterally.

Figure 6 shows a side view of a conductor connection terminal 29, which is formed from a previously described clamping insert 3, which is built into an insulating housing 30. The insulating material housing 30 also has an actuating element 31 which, in the exemplary embodiment shown, is designed as a pivotably mounted actuating lever. The actuating lever has an actuating arm 32 which extends above the horizontal section 11 of the clamping spring 3 and which merges into a bearing section 33 which is guided laterally past the clamping spring 3. The bearing section 33 has an actuating contour 34 which is designed to act on the laterally protruding actuating tab 17 on the clamping leg 13. When the actuating lever is pivoted up, as shown with the actuating arm 32 'in FIG Figure 6 is sketched, the clamping leg 13 is displaced away from the clamping portion 14 of the busbar piece 2 in order to open the clamping point between the clamping leg 13 and the clamping portion 14 for clamping an electrical conductor.

It becomes clear that the insulating material housing 30 has a conductor insertion opening 35 for inserting an electrical conductor 36 on the side opposite the fork plug contact socket 5. This electrical conductor 36 is then clamped with its stripped end between the clamping tongue 15 of the clamping leg and the clamping section 14 of the busbar section 2 in an electrically conductive manner. It becomes clear that when the actuating lever 31 is folded down, it rests on the horizontal section 11 in order to stiffen the spring characteristic of the clamping spring 3.

On the side wall of the insulating material housing 30, latching contours are provided, for example in the form of latching openings 37 and latching pins, with which several conductor connection terminals 19 can be combined next to one another to form a terminal arrangement.

A pin 38 protrudes from the insulating material housing 30 adjacent to the fork plug contact socket 5 and can be used for guidance, latching and / or coding.

In the insulating material housing 30 there is also a contact pin insertion channel on the side opposite the conductor insertion opening 35 in order to guide a contact pin to the clamping point between the fork prongs 4a, 4b.

It can be clearly seen that the vertical section 10 rests against the abutment wall 28, which is provided by the side edge of the connecting web 8 between the fork prongs 4a, 4b.

Figure 7 shows a top view of a two-pole conductor connection terminal 29. Two insulating material housings 30 with clamping inserts 1 built into them are arranged next to one another and locked together. In the open state, which is sketched with the upper conductor connection terminal, the actuating arm 32 of the actuating lever 31 does not cover the horizontal section 11 of the clamping spring. This can then move flexibly upwards so that the spring force is further reduced when opening.

It is also clear that a spigot 38 is present, for example, only on one conductor connection terminal of the two-pole conductor connection terminal 29. Coding can thus be achieved.

Figure 8 shows a cross-sectional view of a modification of the contact insert 1. In this case, a recess 19 is made in the vertical section 10, which recess is delimited by an upper edge 25 and side webs 26a, 26b protruding from this edge 25. The busbar piece 2 is received in the region of the first fork prong 4a in the transition to the holding section 14 in this recess 19 by dipping into the recess 19 from below in the direction of the upper edge 25. These two opposite side webs 26a, 26b then adjoin the side edges of the busbar section 2 or engage in laterally arranged on the busbar section 2 Recesses. It becomes clear that this embodiment of the clamping spring 3 is intended for assembly from above onto the busbar section 2.

It can be seen that the busbar piece 2 is formed in the shape of a wave by beads 39 and elevations 40 in the region immersed in the recess 19. This reduces the risk of deformation of the busbar section 2 as a result of the vertical section 10 being supported on the busbar section 2. The cross-section of the busbar section 2, which is weakened by the lateral recesses, is reinforced by undulating beads 39 and elevations 40 in order to be able to absorb the forces introduced by the clamping spring 3.

Figure 9 shows a perspective exploded view of a further embodiment of the conductor connection terminal 1 formed from the clamping spring 3 and the busbar section 2. For the basic structure of the busbar section 2 and the clamping spring 3, reference can essentially be made to the preceding explanations.

It can be seen that a tab 42 now protrudes from the connecting web 8 on the side facing the clamping tongue 15 of the clamping spring 3. In addition, a lateral recess 43 is provided in the transition between the lower fork prongs 4a and the clamping section 14.

A contact section 44 protrudes from the vertical section 10 of the clamping spring 3 opposite the horizontal section 11. This contact section 44 merges with a side web 45 into the vertical section 10. In this transition area next to the side web 45, the recess 19 is present with its edge edges encompassing the busbar section 2 in the installed state.

It can also be seen that the free end of the contact section 44 bent over from the vertical section is bent away again at an angle away from the clamping leg 13. In addition, a trough-like recess 46 is made on the side of the run-in bevel 18 of the clamping section 14 which faces away from the clamping leg 13. The inlet slope 18 is also narrower in the front end area, than the adjoining area of the clamping section 14. Tongue-like sections 47 are provided laterally next to the inlet slope.

Figure 10 omits a perspective rear view of the conductor connection terminal 1 Figure 9 detect. Here it becomes clear again that the clamping section 14 ends at the free end with an inlet slope 18 in the central area. On both sides of this run-in bevel 18 there are tongue-like sections 47 which are shorter than the run-in bevel 18 and extend at a slightly different angle than the run-in bevel 18. The upper sides of the tongue-like sections 47 are also, unlike the inlet slope 18, curved.

It is also clear that the lateral recess 43 is positioned in such a way that it is located in front of the tab 42 as seen from the direction of the fork prongs 4a, 4b. The vertical section 10 pushed laterally into the busbar piece 2 is thus with its side facing the clamping leg 13 on the tab 42 and with its side facing away from the clamping leg 13 on the contact wall 28 formed by the edge of the upper fork prong 4b and by the lateral recess 43 on the Busbar piece 2 on.

Figure 11 leaves a perspective view of the conductor connection terminal 1 Figure 9 recognize from the opposite side. The connecting section 8, which connects the fork prongs 4a, 4b to one another, becomes clear here. It can also be seen that a tab 42 formed in one piece therewith protrudes from the connecting section 8.

It can also be seen that a trough-like recess 46 is made on the underside of the inlet slope 18.

It can also be seen that the clamping spring 3 can be pushed laterally onto the busbar section 2. The side web 45 is arranged on the side opposite the connecting web 8. The vertical section 10 is pushed into a space between the tab 42 and the contact wall 28 formed by the edge.

This is in Figure 12 clearly visible, which shows the conductor connection terminal 1 in the now assembled state. It is clear that the side web 45 now dips into the lateral recess 43 of the clamping section 14. The vertical section 10 rests against the tab 42. The tab 42 has an area such that it substantially covers the vertical section 10 and forms a conductor stop for an electrical conductor inserted in the conductor insertion direction L.

It can also be seen that the contact section 44 of the contact leg 9 bent away from the vertical section 10 rests against the clamping section 14 on the side of the clamping section 14 which is opposite the clamping leg 13. The contact section 44 extends up to the run-in bevel 18, so that there is a free space for receiving a test pin between the trough-shaped recess 46 and the free end of the contact section 44. There the contact section 44 is thus spaced apart from the clamping section 14.

Furthermore, a gap is provided laterally next to the insertion section 18 between the shortened fingers 47 and the contact section 44 at an angle, which can also be used as a test area for receiving a test pin in order to measure the voltage potential or signals present at the conductor connection terminal 1.

For this purpose, a test opening is then present in an insulating material housing (not shown) below the conductor entry opening.

Figure 13 omits a perspective rear view of the conductor connection terminal 1 Figure 12 detect. Here it is again clear that the vertical section 10 with its side web 45 dips into the lateral recess 43 of the busbar section 2. It becomes clear that the vertical section 10 between the contact wall 28 on the edge of the upper edge facing the clamping leg 15 Fork prong 4b rests on one side and the tab 42 on the opposite side and rests in the lower area with an edge 25 on the clamping section 14. The edge 25 delimits the recess 19.

Claims (17)

Conductor connection terminal (29) with a busbar piece (2) and a clamping spring (3), which has a clamping leg (13) oriented towards the busbar piece (2) to form a clamping point for clamping an electrical conductor (36) between the clamping leg (13) and the busbar piece ( 2), a spring bow (12) adjoining the clamping limb (13) and a contact limb (9) which extends with a vertical section (10) transversely to the busbar piece (2), the vertical section (10) of the contact limb (9 ) has a recess (19) with the edge edges encompassing the busbar piece (2), characterized in that the busbar piece (2) has an abutment wall (28) which adjoins a wall surface of the vertical section (10) of the abutment leg (9) which is attached to the side of the vertical section (10) facing away from the clamping leg (13) is arranged,
and that the clamping spring (3) has a horizontal section (11) between the vertical section (10) and the spring bow (12), and that an actuating lever (31) has an actuating arm (32) extending above the horizontal section (11) of the clamping spring (3) which merges with an actuating contour (34) in a bearing section (33) guided laterally past the clamping spring (3),
wherein when the actuating lever (31) is pivoted up, the clamping limb (13) is displaced away from a clamping section (14) of the busbar section (2) by means of the actuating contour (34), in order in this way to open the clamping point between the clamping limb (13) and the clamping section (14 ) to connect the electrical conductor (36). Conductor connection terminal (29) according to claim 1, characterized in that a transverse web (20) is formed on the recess of the vertical section (10) of the contact leg (9) which engages under the busbar section (2), wherein the busbar piece (2) is inserted into the recess (19) and the edge (25) of the vertical section (10) opposite the transverse web (20) and delimiting the recess (19) is supported on the busbar piece (2). Conductor connection terminal (29) according to Claim 1 or 2, characterized in that the vertical section (10) of the contact leg (9) has an indentation (22) at a distance from the recess (19) and an indentation (22) from the contact wall (28). 22) protruding finger (21). Conductor connection terminal (29) according to claim 3, characterized in that the finger (21) engages around the vertical section (10) of the contact leg (9) and rests with its end on the side of the vertical section (10) which is the contact surface of the vertical section (10) on the opposite wall (28). Conductor connection terminal (29) according to one of the preceding claims, characterized in that a horizontal section (11) of the contact leg (9) extending in the main direction of extent of the busbar section (2) is bent away from the vertical section (40), the horizontal section (11) at a distance to the busbar piece (2) is arranged and merges into the spring bow (12). Conductor connection terminal (29) according to one of the preceding claims, characterized in that the horizontal section (11) has no support on the busbar piece (2). Conductor connection terminal (29) according to one of the preceding claims, characterized in that the clamping leg (13) has an actuating section (17) designed as a laterally protruding actuating tab. Conductor connection terminal (29) according to one of the preceding claims, characterized in that the conductor connection terminal (29) is a Insulating housing (30) with a clamping insert (1) formed from the busbar piece (2) and clamping spring (3). Conductor connection terminal (29) according to claim 8, characterized in that an actuating element (31) is pivotably or displaceably mounted in the insulating material housing (30), the actuating element (31) for acting on an actuating section (17) of the clamping leg (13) when pivoting or Moving the actuating element (31) is formed. Conductor connection terminal (29) according to one of the preceding claims, characterized in that the busbar piece (2) has two fork prongs (4a, 4b) which are arranged at a distance from one another and are aligned facing one another to form a fork plug contact socket (5), and that the contact wall (28) is formed by a side edge of a connecting web (8) connecting the two fork prongs (4a, 4b) to one another. Conductor connection terminal (29) according to Claim 10, characterized in that a tab (42) protrudes from the connecting web (8), rests against the vertical section (10) and faces the clamping leg (13). Conductor connection terminal (29) according to one of the preceding claims, characterized in that the conductor rail piece (2) in its area on which the vertical section (10) of the contact leg (9) is supported is undulating with beads (39) and elevations (40) has executed cross-sectional profile. Conductor connection terminal (29) according to one of the preceding claims, characterized in that a horizontal section (11) of the contact arm (9) extending in the main direction of extent of the busbar piece (2) is bent from the vertical section (10) of the contact arm (9) and which is spaced apart is arranged to the busbar piece (2) and merges into the spring bow (12), a holding section which extends towards the busbar piece (2) and is mounted on the busbar piece (2) protrudes from the horizontal section (11). Conductor connection terminal (29) according to one of the preceding claims, characterized in that the contact wall (28) is formed by an edge of the busbar section (2) facing the vertical section (10). Conductor connection terminal (29) according to claim 14, characterized in that the contact wall (28) connects the fork prongs (4a, 4b) of the busbar section (2) to one another by a marginal edge of a connecting web (8) facing the vertical section (10), and / or is formed by a marginal edge of a fork prong (4b) which lies on the end of the fork prong (4b) opposite the clamping end of the fork prong (4b). Conductor connection terminal (29) according to one of the preceding claims, characterized in that the vertical section (10) has at least one side web (26, 26a, 26b) which dips into an associated lateral recess of the busbar section (2) Conductor connection terminal (29) according to one of the preceding claims, characterized in that the contact leg (9) has a contact section (43) which adjoins the vertical section (10) and is bent over by the vertical section (10) and which is attached to the clamping leg (13) facing away from the clamping section (14) of the busbar section (2) rests against the clamping section (14) and is spaced apart from the clamping section (14) in a test area.

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