EP3979425A1 - Conduit connection contact element - Google Patents

Abstract

A conductor connection contact element (1) for clamping an electrical conductor with a busbar piece (2) and a clamping spring (3) is described. The busbar section (2) is formed from a sheet metal part with an opposite second side wall (4, 5), a base section (7) and an opposite cover section (6). The side walls (4, 5) delimit a conductor entry channel (8) with the base section (7) and the cover section (6). The clamping spring (3) is arranged on the busbar piece (2). It has a contact section (9) at a first end area and a clamping section (11) with a clamping edge (22, 36, 41) for clamping the electrical conductor at the second end area, which is opposite the first end area. The contact section (9) is arranged on the bottom section (7) of the conductor rail piece (2). The clamping section (11) extends with its freely movable end towards the cover section (6). an operating tool accessible operating section available. A conductor routing area (14, 34) adjoining the clamping section (11) is formed on the first side wall (4). The conductor routing area (14, 34) is a section of the first side wall (4) that is oriented obliquely in the direction of the opposite second side wall (5).

Description

The invention relates to a conductor connection contact element for clamping an electrical conductor with a busbar piece, which consists of a sheet metal part with a first side wall and a second side wall opposite the first side wall, a base section extending from the first side wall to the second side wall opposite, and a base section opposite and opposite the base section from the first side wall to the opposite second side wall, the side walls delimiting a conductor insertion channel with the base section and the cover section, and with a clamping spring arranged on the busbar piece, which has a contact section on a first end area and a contact section on the second end area, which opposite the first end region, has a clamping section with a clamping edge for clamping the electrical conductor. The abutment section is arranged on the bottom section of the busbar piece. The clamping section extends with its freely movable end towards the cover section.

Such conductor connection contact elements are used in a variety of forms. The present conductor connection contact element is primarily intended and designed to be placed directly on a printed circuit board and soldered to the printed circuit board in order to create a printed circuit board contact for clamping an electrical conductor by means of a spring-clamp connection. The conductor connection contact element is provided so that it can be used without a surrounding insulating material housing.

DE 20 2013 105 670 U1 shows a connection for light-emitting diodes with an insulating material housing provided with pushbuttons and a plurality of conductive contact units located in the insulating material housing. The contact units are made up of two metal strips. The first metal strip has an upwardly raised metal wall which is curved inwards at the top to form a semicircle. The second metal strip is connected at one end to the upper end of the first metal strip and is provided with two branching tongues at its other end. One of the branching tongues is provided for connecting the electrical conductor. The other branching tongue is aligned with the pushbutton, so that the pushbutton can be pressed against the second metal strip to open the terminal point formed by the first branching tongue and the first metal strip for clamping an electrical conductor.

DE 20 2014 101 856 U1 discloses a quick connect clip having a conductive copper web and a flexible conductive steel sheet attached to the copper web. For this purpose, opposite holding plates are bent from the copper web, on which the sheet steel is supported. Between the clamping section of the sheet steel for clamping an electrical conductor and the bottom section of the copper web, a guide web is bent off the retaining plates at an angle pointing into the conductor insertion channel, in order to guide an electrical conductor to be clamped from the left and right side in the direction of the clamping jaw, which passes through the clamping plate and the copper web is formed.

WO 2014/124475 A2 discloses a terminal or connection clip for electrically connecting at least one conductor and to an electrical contact body. The connection terminal has an insulating material housing in which the contact body is arranged. The contact body has a stamped part with an opening and a spring element arranged in the opening. That The spring element is designed as a leg spring bent in a U-shape with a contact section, an adjoining spring arc and a clamping leg which is opposite the contact section and adjoins the spring arc. The contact leg rests on a bottom section of the stamped part. The clamping leg is aligned towards the cover section of the stamped part in order to form a clamping point for clamping on an electrical conductor. To open the terminal point, an actuating tool can be placed on the terminal leg through an opening in the insulating material housing in order to displace it away from the cover section of the stamped part.

Proceeding from this, it is the object of the present invention to create an improved conductor connection contact element for clamping on an electrical conductor.

The object is achieved with the conductor connection contact element with the features of claims 1 and 2. Advantageous embodiments are described in the dependent claims.

For a conductor connection contact element that has a busbar piece and a clamping spring, it is proposed that the first side wall has an opening and that the clamping spring with its contact section, the clamping section and with the spring bow that connects the contact section with the clamping section, protrudes into the opening.

This not only allows actuation via the easily accessible opening. Rather, the clamping spring can easily be installed from the side via the opening.

This is also achieved when the first side wall has an opening of a size which accommodates both the contact section of the clamping spring and a spring arc formed from the contact section to the clamping section Includes clamping spring.

The clamping spring can have an actuating section which is designed as an actuating tab projecting laterally through the opening out of the first side wall. The actuating section is arranged laterally on the clamping section of the clamping spring. This does not preclude the actuating section from having a further actuating tab which also protrudes laterally from the clamping section on the opposite side.

In this respect, the indefinite term "on" is not to be understood as a number word in the context of this invention.

An actuating tool can be attached to the conductor connection contact element through the actuating tab protruding from the side wall. For this purpose, the actuating tool is placed on the actuating tab and a force is exerted on the actuating tab to open the clamping point. The actuating tool is preferably a screwdriver, but can also be a user's finger.

The conductor connection contact element can have a conductor routing area, which is oriented away from a front edge of the first side wall that delimits the opening and is opposite the conductor routing area. This prevents an electrical conductor that is inserted into the conductor insertion channel and is to be clamped, either in its entirety or with its strands, from hitting the front edge of the first side wall that is exposed through the opening. The conductor routing area thus keeps the opening with the front edges delimiting the opening free from an electrical conductor that has been inserted and is to be clamped on.

The opening may be defined by edges of the first side wall and a bottom portion abutting the side wall.

Figur 1 -

perspektivische Ansicht einer ersten Ausführungsform eines Leiteranschlusskontaktelementes;

Figur 2 -

Seitenansicht des Leiteranschlusskontaktelementes aus Figur 1;

Figur 3 -

Seiten-Schnittansicht durch das Leiteranschlusskontaktelement aus Figur 2;

Figur 4 -

perspektivische Ansicht des Stromschienenstücks des Leiteranschlusskontaktelementes aus Figur 1;

Figur 5 -

perspektivische Ansicht der Klemmfeder des Leiteranschlusskontaktelementes aus Figuren 1 bis 3;

Figur 6 -

perspektivische Ansicht einer zweiten Ausführungsform eines Leiteranschlusskontaktelementes;

Figur 7 -

Seitenansicht des Leiteranschlusskontaktelementes aus Figur 6;

Figur 8 -

Seiten-Schnittansicht durch das Leiteranschlusskontaktelement aus Figur 7;

Figur 9 -

perspektivische Ansicht der Klemmfeder des Leiteranschlusskontaktelementes aus Figuren 6 bis 8;

Figur 10 -

perspektivische Ansicht einer dritten Ausführungsform eines Leiteranschlusskontaktelementes von der ersten Seite;

Figur 11 -

perspektivische Ansicht des Leiteranschlusskontaktelementes aus Figur 10 von der zweiten Seite;

Figur 12 -

Seitenansicht des Leiteranschlusskontaktelementes aus Figur 10;

Figur 13 -

Seiten-Schnittansicht des Leiteranschlusskontaktelementes aus Figur 12;

Figur 14 -

perspektivische Schnittansicht des Leiteranschlusskontaktelementes aus Figur 10 bis 13;

Figur 15 -

perspektivische Ansicht des Stromschienenstücks des Leiteranschlusskontaktelementes aus 10;

Figur 16 -

perspektivische Ansicht der Klemmfeder des Leiteranschlusskon-taktelementes aus Figuren 10 bis 14;

Figur 17 -

perspektivische Ansicht einer vierten Ausführungsform eines Lei-teranschlusskontaktelementes;

Figur 18 -

Seitenansicht des Leiteranschlusskontaktelementes aus Figur 17;

Figur 19 -

Seiten-Schnittansicht durch das Leiteranschlusskontaktelement aus Figur 18;

Figur 20 -

perspektivische Ansicht des Stromschienenstücks des Leiteran-schlusskontaktelementes aus Figur 17;

Figur 21 -

perspektivische Ansicht der Klemmfeder des Leiteranschlusskon-taktelements aus Figuren 17 bis 19.

The invention is explained in more detail below using exemplary embodiments with the accompanying drawings. Show it:

Figure 1 -

perspective view of a first embodiment of a conductor connection contact element;

Figure 2 -

Side view of the conductor connection contact element figure 1 ;

Figure 3 -

Side sectional view through the conductor connection contact element figure 2 ;

Figure 4 -

Perspective view of the busbar piece of the conductor connection contact element figure 1 ;

Figure 5 -

perspective view of the clamping spring of the conductor connection contact element Figures 1 to 3 ;

Figure 6 -

perspective view of a second embodiment of a conductor connection contact element;

Figure 7 -

Side view of the conductor connection contact element figure 6 ;

figure 8 -

Side sectional view through the conductor connection contact element figure 7 ;

Figure 9 -

perspective view of the clamping spring of the conductor connection contact element Figures 6 to 8 ;

Figure 10 -

perspective view of a third embodiment of a conductor connection contact element from the first side;

Figure 11 -

perspective view of the conductor connection contact element figure 10 from the second side;

Figure 12 -

Side view of the conductor connection contact element figure 10 ;

Figure 13 -

Side sectional view of the conductor connection contact element figure 12 ;

Figure 14 -

perspective sectional view of the conductor connection contact element Figure 10 to 13 ;

Figure 15 -

perspective view of the busbar piece of the conductor connection contact element from FIG. 10;

Figure 16 -

Perspective view of the clamping spring of the conductor connection contact element Figures 10 to 14 ;

Figure 17 -

perspective view of a fourth embodiment of a conductor connection contact element;

Figure 18 -

Side view of the conductor connection contact element figure 17 ;

Figure 19 -

Side sectional view through the conductor connection contact element figure 18 ;

figure 20 -

perspective view of the busbar piece of the conductor connection contact element figure 17 ;

figure 21 -

perspective view of the clamping spring of the conductor connection contact element Figures 17 to 19 .

figure 1 shows a perspective view of a first embodiment of a conductor connection contact element 1, which is formed from a busbar piece 2 and a clamping spring 3 inserted therein. The conductor rail piece 2 is formed from a sheet metal part in the form of a cage. It has a first side wall 4 and an opposite second side wall 5 . These two side walls 4 and 5 are connected to one another via a cover section 6 . In the illustrated embodiment, the lid portion 6 is formed integrally by bending the two side walls 4 and 5 therewith.

Opposite the cover section 6 , the busbar piece 2 has a bottom section 7 which also extends from the first side wall 4 to the second side wall 5 . The bottom section 7 is formed by folding the second side wall 5 and abuts the first side wall 4 . It is therefore not integrally connected to the first side wall 4 .

The first and second side walls 4 and 5, which are spaced apart from one another, and the cover and base sections 6 and 7, which extend transversely thereto and are also spaced apart from one another, form a conductor entry channel 8 delimits, which is provided for inserting and conducting an electrical conductor and for receiving the clamping spring 3 .

The clamping spring 3 is designed as a leg spring bent in a U-shape with a contact section 9 resting on the base section 7, an adjoining spring bow 10 and a clamping section 11 protruding in the conductor insertion direction L, i.e. in the direction of the conductor entry channel 8 or obliquely into this conductor entry channel 8 . The clamping section 11 extends towards the cover section 6 with its freely movable end.

It is clear that the first side wall 4 has an opening 12 for the passage of an actuating tab 13 projecting laterally from the clamping section 11 . By exerting an actuating force on the actuating tab 13 , the clamping section 11 can be displaced in the direction of the contact section 9 against the spring force of the clamping spring 3 . This opens a clamping point formed between a clamping edge of the clamping section 11 and the busbar piece 2 for clamping an electrical conductor.

The actuating tab 13 forming an actuating section lies next to this clamping edge, seen transversely to the direction of longitudinal extension of the clamping section 11 . A conductor routing area 14 , which is formed on the first side wall 4 , adjoins the clamping section that is located in the interior of the busbar piece 2 and is therefore not visible. For this purpose, a section of the first side wall 4 that lies between the insertion area for the clamping section and the actuating section is aligned obliquely in the direction of the opposite second side wall 5 and in the direction of the clamping section 11 . An electrical conductor inserted into the conductor insertion channel 8 is guided towards the clamping edge with the aid of this conductor guide area 14 and this conductor or strands of a finely stranded conductor are prevented from reaching the operating section and possibly in the Exit area of the actuating tab 13 from the busbar piece 2 through the opening 12.

It is also clear that on the first side wall 4 there is an overload stop lug 15 which points towards the second side wall 5 and forms an end stop for the clamping section 11 . The clamping section can only be pushed down in the direction of the contact section 9 until it hits the overload stop strap 15 .

With the help of this overload stop tab 15, the clamping spring 3 is also fixed in position on the conductor rail piece 2. This positional fixing is also achieved by a trough or opening 16 in the contact section 9, into which an embossing of the base section 7 dips. Optionally, the contact section 9 can also be welded, riveted, screwed or attached in some other way to the bottom section 7 . It is also conceivable for a fixing section, e.g.

It is also clear that in the exemplary embodiment shown, conductor routing planes 17 are bent from both side walls 4 and 5 in the area immediately in front of the spring bow 10 . These sheet metal sections of the conductor rail piece 2 forming a conductor guide are aligned obliquely in the conductor insertion direction L toward the cover section 6 . A funnel-shaped conductor entry channel 8 is thus created, in which an electrical conductor is guided past the spring arc 10 at least in the lower region to the inclined plane of the clamping section 11 .

As an alternative to this illustrated embodiment of the conductor routing planes 17 bent from both side walls 4 and 5, it is also conceivable that the conductor routing plane 17 is only formed from a sheet metal part bent from one side wall 4 or 5, which is then attached to the opposite side wall adjoins and extends to this side wall.

It is also clear that the cover section 6 has narrower tabs 18a, 18b, which are free from the cover section 6 at the opposite end regions and are used to connect the busbar section 2 during manufacture in the production tool. The contact is soldered to the circuit board on the underside of the base section 7. The upper side of the cover section 6 is required as a flat suction surface for automatic circuit board assembly with a suction gripper. However, under certain circumstances, the conductor connection contact element 1 can also be placed with the cover section 6 on a printed circuit board and soldered there with the tabs 18a, 18b to conductor tracks on the printed circuit board. Then the tabs 18a, 18b form solder connection areas.

It can also be seen that an end stop 19 is formed by a material tab bent from at least one of the side walls 4, 5 at the rear end of the busbar section 2, which is opposite the conductor entry channel 8. It is clear that a material tab is bent from the first side wall 4 in the direction of the opposite second side wall 5 to form the end stop 19 .

figure 2 shows a side view of the conductor connection contact element 1 from FIG. It becomes clear that the overload stop tab 15 is directly adjacent to the contact section 9 . A movement of the clamping spring 3 in the conductor insertion direction L is thus prevented.

It can also be seen that the conductor routing level 17 is positioned in front of the spring bow 10 as viewed in the conductor insertion direction L and aligned at an angle such that the conductor routing level 17 indicated by the fold is continued approximately above the transition between the spring bow 10 and the adjoining clamping section 11. An electrical conductor thus becomes safe out to the level of the clamping portion 11 without hitting the spring bow 10. The conductor routing area 14 formed on the first side wall 4 then extends at a distance therefrom. It is materially connected to the first side wall 4 and can be cut free from the first side wall 4 in some areas, for example in the upper section.

It is also clear that the actuating tab 13 present on the actuating section protrudes laterally out of the opening 12 and the opening 12 thereby enables an unhindered movement of the clamping section 11 in the direction of the contact section 9 for opening the clamping point. The overload stop tab 15 does not stand in the way of the actuating tab 13 either. Rather, the overload stop is provided by the area with the clamping edge adjoining the actuating tab.

figure 3 omits a side sectional view of the wire terminal contact member 1. FIG figure 2 recognize. It is clear here that the inside of the cover section 6 has indentations 20 with which clamping projections 21 are formed. It can also be seen that the clamping section 11 has a clamping edge 22 at its freely movable end, which rests against the inside of the cover section 6 in the illustrated resting state without an inserted electrical conductor. It ends, for example, at a clamping projection 21 of this type. The clamping force of the clamping spring 3 is concentrated on the reduced area of the clamping projection 21, so that the force (surface pressure) acting per unit area is increased.

It is also clear that the contact section 9 is supported on the base section 7 on the opposite side. A position is fixed in that an embossing 23 in the base section dips into the opening 16 of the contact section 9 . This prevents the clamping spring 3 from slipping in the conductor insertion direction L. Otherwise, the clamping spring 3 rests against the second side wall 5 with the contact section 9 and the clamping section 11, so that an inclined position of the clamping spring 3 is prevented.

Furthermore, the sloping conductor routing plane 17 leading an electrical conductor past the subsequent spring arc 10 in the front open area of the conductor entry channel 8 and the end stop 19 at the opposite end of the busbar section 12 can be seen. It is also clear that the spring bow 10 is offset outwards (downward in the figure) relative to the inside of the base part 7 and is therefore arranged in a region between the planar section of the base part 7 and the conductor routing plane 17 .

figure 4 shows a perspective view of the busbar piece 2 without a clamping spring. The embossing 23 on the bottom section 7 becomes clear. This is designed as a part-circular elevation.

It can also be seen that the opening 12 , seen in the direction of conductor insertion L, is delimited by a front edge 24 which is located above the overload stop lug 15 . In order to keep an electrical conductor out of the opening 12 and to prevent it from bumping into this front edge 24 , the conductor guide area 14 is formed in front of the front edge 24 as a section of the first side wall that is angled to the second side wall 5 .

The conductor routing area 14 is thus oriented pointing away from the end edge 24 of the first side wall 4 that delimits the opening 12 and is opposite the conductor routing area 14 .

figure 5 omits a perspective view of the clamping spring 3 for the conductor connection contact element 1 Figures 1 to 3 recognize. It is clear here that the clamping section 11 has a clamping edge 22 over the essential part of its width, which is adjoined at the side by an actuating section with the actuating tab 13 protruding at the side. The actuation section with the actuation tab 13 is positioned next to the area of the clamping edge 22 , ie at the side edge of the clamping section 11 , seen transversely to the direction of longitudinal extension of the clamping section 11 .

figure 6 shows a perspective view of a second exemplary embodiment of a conductor connection contact element 1. The conductor connection contact element 1 is in turn formed from a busbar piece 2 and a clamping spring 3 . The clamping spring 3 is designed as a leaf spring extending from a base section 7 to the opposite cover section 6 . This leaf spring rests with its contact section 9 on the base section 7 in the section of the conductor routing area 14 on the input side. An electrical conductor is introduced from this front side into the busbar piece 2, which in turn is in the form of a cage.

For this purpose, two opposite and spaced side walls 4 and 5 are bent from a sheet metal part of the cover section 6, to which the bottom section 7 extends transversely between the side wall sections 4 and 5 and is spaced from the cover section 6.

It is clear that the contact leg 9 of the clamping spring 3 is clamped between the end edges of the two side walls 4 and 5 and the bottom section 7 .

Viewed in the conductor insertion direction L, conductor routing areas 34 are present at least on the first side wall 4 and, in the exemplary embodiment shown, on both side walls 4 and 5 . These conductor routing areas 34 are as Material tongues are formed obliquely in the direction of the respective opposite side wall 5, 4 and towards a clamping section or the freely movable end of the clamping section 11 of the clamping spring 3, which materially connect to the respective side wall 4, 5. The material tongues are formed from the side wall 4 in that the end faces of the material tongues facing the base section 7 and the cover section 6 are exposed from the adjoining base section 7 or cover section 6 .

It is also clear that the first side wall 4 has an opening 12 on the side, into which an actuating section 35 on the clamping section 11 of the clamping spring 3 protrudes. A terminal point formed between the clamping section 11 and the cover section 6 for clamping an electrical conductor can be opened by an operating tool striking the operating section 35 and an operating force is exerted on the terminal section 11 in the direction of the base section 7 .

figure 7 shows a side view of the conductor connection contact element 1. It is clear that the cover section 6 has a contact projection 37 in the area of the clamping edge 36 of the clamping spring 3 at the free end of the clamping section 11 . This is formed by folding or embossing the otherwise flat cover section 6 in the direction of the base section 7 . A clamping point for clamping an electrical conductor is thus formed between the contact projection 37 and the clamping edge 36 .

It can also be seen that the material tongues 34 are integrally formed with the side wall 4 and are placed obliquely inwards into the conductor entry channel 8 . They point to the clamping section 11 of the clamping spring 3 . The side wall 4 is provided with an opening 12 in the region between the free end of the material tongue 34 and a rear region (on the left in the figure), through which the clamping section 11 is accessible.

figure 8 omits a side sectional view of the wire terminal contact member 1. FIG figure 7 recognize. This again makes it clear that a contact projection 37 is formed on the cover section 6 and projects into the interior of the busbar piece 2 . The freely movable end of the clamping section 11 of the clamping spring 3 with its clamping edge 36 rests directly behind the clamping projection 37 in the illustrated resting state without a clamped-on electrical conductor. The position of the clamping projection 37 is aligned with the clamping edge 36 such that when an electrical conductor is clamped on, the clamping force of the clamping spring 3 acting on the electrical conductor clamps the clamped-on electrical conductor to the clamping projection 37 . The clamping force of the clamping spring 3 is thus concentrated on the clamping projection 37 and the electrical conductor may be bent somewhat behind the clamping projection 37 in order to bring about a form fit between the electrical conductor and the clamping edge 37 .

It can also be seen that on the input side (i.e. on the right-hand side) as seen in conductor insertion direction L, the part of the second side wall 5 facing the base section 7 is placed in the interior of the busbar section 2 in order to rest on the contact section 9 of the clamping spring 3 and this on the busbar section 2 to clamp. In this regard, also on figure 6 referred. A correspondingly inwardly adjusted fastening section 38 is also present on the first side wall 4 .

It is also clear that the conductor rail piece 2 has a material tab 19 bent down from the cover section 6 in the direction of the base section 7 at the end to form an end stop. An electrical conductor inserted into the conductor insertion channel 8 thus abuts this material flap 19 at the end and cannot be guided out to the outside again.

figure 9 leaves a perspective view of the clamping spring 3 for the second embodiment of the conductor connection contact element 1 of Figures 6 to 8 recognize. It becomes clear that the contact section 9 has indentations 39 on its side edges. In these indentations 39 dive into Figure 6 and 7 recognizable lugs 40 of the inwardly bent fastening section 38, in order in this way to fix the clamping spring 3 on the conductor rail piece 2 in position.

It is also clear that the freely movable end of the clamping section 11 of the clamping spring 3 has the clamping edge in the central area and actuating tabs 35 protruding from the side edge on the two opposite sides to form actuating sections. These protrude as in figure 6 recognizable in the lateral opening of the respective side wall 4 and 5 and are accessible from there for an operating tool.

Furthermore, it can be seen that the clamping section 11, starting from the contact section 9, initially tapers conically, in order then to transition back into a widening section with the laterally protruding actuating tabs 35.

figure 10 shows a third embodiment of a conductor connection contact element 1, which in turn is formed from a busbar piece 2 and a clamping spring 3. The clamping spring 3 is designed as a U-shaped torsion spring with a contact section 9, an adjoining spring bow 10 and a clamping section 11 adjoining the spring bow 10. The contact section 9 is supported on the base section 7 of the busbar piece 2 .

In this exemplary embodiment, too, the conductor rail piece 2 is designed in the form of a cage, in order to be able to connect with the cover and base sections lying opposite one another 6, 7 and the first and second side walls 4, 5 laterally connecting these cover and base sections 6, 7 to delimit a conductor insertion channel 8.

From the first side wall 4, a material tongue 34 that is integrally formed with the first side wall is aligned to form a conductor routing area in the interior of the conductor insertion channel 8 toward the opposite second side wall 5. This material tongue 34, i.e. the conductor routing area, is located between the cover section 6 and the clamping section 11, so that the clamping spring is arranged between the material tongue 34 and the base section 7.

An electrical conductor inserted from the front (on the left side in the picture) into the conductor insertion channel 8 is guided to the clamping edge 41 of the clamping spring 3 with the aid of the material tongue 34 . Laterally next to this clamping edge 41 there is an upwardly protruding actuating tab 42 which extends in the direction of the plane of the cover section 6 and is arranged laterally next to the side wall 4 and the cover section 6 in the rest state shown.

In turn, there is an opening 12 in the first side wall 4, through which the actuating section with the actuating tab 42 protrudes laterally. The opening 12 is designed in such a way that the clamping section 11 can be moved in the direction of the contact section 9 in order to open a clamping point formed between the clamping edge 41 and the inner wall of the cover section 6 for an electrical conductor.

The cover section 6 has a grip section 43 which is widened, for example in the shape of a part circle, which provides a platform for a suction and gripping tool of an assembly robot and/or can be used as a solder connection area. It is also clear that the two side walls 4, 5 have material tabs 44 facing one another in their end region to form an end stop. A ladder collection pocket is thus provided. There is no cover section 6 in the area of these conductor collection pockets, so that a viewing window is formed for checking the plugged-in state of an inserted conductor.

figure 11 shows a perspective side view of the conductor connection contact element 1 from figure 10 from the opposite side with a view of the second side wall 5. It can be seen here that this side wall 5 has no opening and no conductor guide section that is placed in the conductor insertion opening 8.

It can also be seen that the cover section 6 and the base section 7 are materially connected to the second side wall 5 by folding or bending over.

In addition, as in figure 10 also the sloping conductor routing levels visible, which are bent from the two side walls 4, 5 and the spring bow 10 upstream. In this regard, reference is made to the first exemplary embodiment.

figure 12 shows a side view of the conductor connection contact element 1 from FIG. 10 with a view of the first side wall 4. It is clear that this first side wall 4 has an opening 12 through which the actuating section of the clamping spring 3 passes. The actuating tab 42 protrudes beyond the opening to such an extent that it is positioned next to the first side wall 4 adjoining the opening 12 .

figure 13 omits a side sectional view through the conductor terminal contact element 1 figure 12 recognize. It becomes clear here that the bottom section 7 has a fixing opening 46 which adjoins the end of the contact section 9 of the clamping spring 3 .

figure 14 shows a perspective sectional side view through the conductor connection contact element 1 figure 10 . It can be seen that, as in the first exemplary embodiment, an inclined conductor routing plane 17 is formed in front of the spring bow 10 . This is formed in one piece with the busbar element 2 as a material section bent from at least one side wall 4 , 5 .

In this exemplary embodiment, the clamping spring 3 is fixed in position on the busbar piece 2 with a fixing section designed as a lug 45 on the contact section 9 . This tab 45 dips into a fixing opening 46 in the base section 7 . Otherwise, the contact section 9 rests exactly like the clamping section 11 on the inside of the second side wall 5 in order to prevent tilting or twisting.

figure 15 omits a perspective view of the busbar piece 2 of the conductor connection contact element 1 Figure 10 to 14 recognize. It is even clearer here that the conductor routing level 17 is formed from two material tabs that are each bent away from the first and second side walls 4 , 5 and placed at an angle in the direction of the cover section 6 .

The bottom part 7 is located at a distance behind this conductor routing plane 17 seen in the conductor insertion direction L.

figure 16 FIG. 12 shows a perspective view of the clamping spring 3 of the third exemplary embodiment Figures 10 and 11 a conductor connection contact element 1 recognize. Here it becomes clear that the tab forming the fixing section 45 adjacent to a side edge of the abutment portion 9 is bent. This lug 45 is thus located below the clamping edge 41 of the clamping section 11 of the clamping spring 3. The lug 45 is not arranged in a more central area of the contact section 9 in this exemplary embodiment. However, this is also possible as an option.

It is also clear that the actuating tab 42 is positioned next to the clamping edge 41 seen transversely to the longitudinal extension direction of the clamping section 11 and protrudes beyond the end region formed by the free end region of the clamping edge 41 . The operating range is thus shifted upwards, i.e. in the direction of the cover section 6 and away from the base section 7 .

figure 17 shows a perspective view of a fourth embodiment of a conductor connection contact element 1. This is a variant of the first embodiment that has been modified in detail, so that the description of FIG Figures 1 to 5 can be referred.

In this case, the already mentioned alternative is realized, that a conductor routing level 17 protrudes from the side wall 4 to the opposite side wall 5 .

In this embodiment, the end stop 19 is bent over from the second side wall 5 in the direction of the first side wall 4 and has a guide surface 47 projecting in the direction of the bottom section 7 in this transverse section. This provides a conical or funnel-shaped conductor collecting pocket.

The overload stop tab 15 present in the first exemplary embodiment is not present in this exemplary embodiment. At a suitable height, an overload stop is provided by the lower edge 48 of the first side wall 4 that delimits the opening 12 .

It is also clear that the first side wall 4 in the area adjoining the conductor routing area 14 and lying between the conductor routing area 14 and the conductor routing plane 17 provides a support surface 49 on which the clamping spring 3 rests in the illustrated resting state for position stabilization. In the variant shown, the clamping section 11 of the clamping spring 3 lies just behind the spring arc 10 on the contact surface 49 designed as an arc of the side wall 4 .

figure 18 shows a side view of the conductor connection contact element 1 from FIG. Here it is clear again that the bearing surface 49 is designed as an area immediately adjoining the conductor routing area 14 , which transitions into an adjoining bay formed by an arc-like contour up to the conductor routing plane 17 .

Out of Figures 17 and 18 it is also clear that the actuating tab 13 extends even further away in the direction of the cover section 6 and is curved back slightly downwards in the direction of the base section 7 . The actuating tab 13 is then arranged with part of its length next to the side wall 4 and thus extends beyond the opening 12 also. The actuating tab 13 is thus significantly longer compared to the first embodiment.

It is also clear that a receiving mandrel 50 protrudes from the second side wall 5 in the direction of the opening 12 or the plane of the first side wall 4 . This receiving mandrel 50 is arranged adjacent to the spring arc 10 of the clamping spring 3 so that the receiving mandrel 50 is positioned between the clamping section 11 and the contact section 9 in the area of the spring arc or the spring root.

figure 19 omits a side sectional view of the wire terminal contact member 1. FIG figure 18 recognize. Here again the mandrel 50 is clearer is positioned in the spring bow 10 between the adjoining clamping section 11 and the contact section 9 .

The conductor receiving pocket with the end stop 19 and the guide section 47, which is directed opposite to the conductor insertion direction L in the direction of the bottom section 7, can also be seen.

It is also clear that the freely movable end of the clamping section 11, on which the clamping edge 22 is formed, is bent slightly in the direction of the cover section 6, so that the clamping section 11, starting from the spring bow 10, after a first bend at a first acute angle towards the cover section 6 is aligned and is aligned in its end with a second acute angle to the cover portion 6. The second acute angle is larger than the first acute angle.

figure 20 shows a perspective view of the conductor rail piece 2. Here you can essentially refer to the remarks figure 4 to get expelled. It is clear that on the first side wall 4 there is a marginal edge 48 of the opening 12 opposite the conductor insertion area 14 which delimits the opening 12 towards the base section 7 . It can be used as an overload stop.

It can also be seen that the base section 7 is formed in partial areas from sheet metal sections folded from the second side wall 5 and, on the other hand, from sheet metal sections folded from the first side wall 4, which adjoin one another.

figure 21 omits a perspective view of the clamping spring 3 for the conductor connection contact element 1 Figures 17 to 19 recognize. Here again it becomes clear that the actuating tab 13 is arranged on the clamping section 1 laterally next to the clamping edge 22 . The actuating tab 13 is from the clamping edge 22 is exposed and bent slightly downward again with a curved contour in the direction of the plane of the contact section 7 .

Claims (5)

Conductor connection contact element (1) for connecting an electrical conductor with a busbar piece (2) consisting of a sheet metal part with a first side wall (4) and the second side wall (5) opposite the first side wall (4), a part extending from the first side wall (4) to the opposite second side wall (5) extending bottom section (7) and a bottom section (7) opposite and extending from the first side wall (4) to the opposite second side wall (5) extending cover section (6), wherein the side walls (4, 5) with the base section (7) and the cover section (6) delimit a conductor entry channel (8), and with a clamping spring (3) arranged on the busbar piece (2) which has a contact section (9) at a first end area and a contact section (9) at the second end area End area, which is opposite to the first end area, has a clamping section (11) with a clamping edge (22, 36, 41) for clamping the electrical conductor, the system section itt (9) is arranged on the bottom section (7) of the busbar section (2), and wherein the clamping section (11) extends with its freely movable end towards the cover section (6),
characterized in that the first side wall (4) has an opening (12) and that the clamping spring (3) with its contact section (9), the clamping section (11) and with the spring bow (10) which the contact section (9) with connects the clamping section (11), protrudes into the opening (12). Conductor connection contact element (1) for connecting an electrical conductor with a busbar piece (2) consisting of a sheet metal part with a first side wall (4) and a second side wall (5) opposite the first side wall (4), a part extending from the first side wall (4 ) extending to the opposite second side wall (5) base section (7) and a cover section (6) lying opposite the base section (7) and extending from the first side wall (4) to the opposite second side wall (5), wherein the side walls (4 , 5) with the base section (7) and the cover section (6) delimit a conductor entry channel (8), and with a clamping spring (3) arranged on the busbar piece (2) which has a contact section (9) on a first end area and on the the second end area, which is opposite the first end area, has a clamping section (11) with a clamping edge (22, 36, 41) for clamping the electrical conductor, the system section (9) is arranged on the bottom section (7) of the busbar section (2), and the clamping section (11) extends with its freely movable end towards the cover section (6), characterized in that the first side wall (4) has an opening (12) and that the opening (12) has a size which both the contact section (9) of the clamping spring (3) and a spring arc (10) of the clamping spring (3) formed from the contact section (9) to the clamping section (11) includes. Wire connection contact element (1) according to Claim 1 or 2, characterized in that the clamping spring (3) has an actuating section and that the actuating section is arranged as a side on the clamping section (11) of the clamping spring (3) and laterally through the opening (12). the first side wall (4) protruding actuating tab (13, 35) is formed. Conductor connection contact element (1) according to one of Claims 1 to 3,
characterized in that a conductor routing area (14, 34) is oriented pointing away from the end edge (24) of the first side wall (4) delimiting the opening (12) and lying opposite the conductor routing area (14, 34). Wire connection contact element (1) according to Claim 2, characterized in that the opening (12) is delimited by edges (24) of the first side wall (4) and a bottom section (7) abutting the side wall (4).

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