EP3042419B1 - Spring-cage connection terminal - Google Patents

Description

The invention relates to a spring-loaded connection terminal with a busbar piece which has a base surface and sidewalls extending laterally from the base surface, wherein mutually opposite side walls delimit a receiving space on both sides, and with a clamping arrangement for clamping an electrical conductor to an associated clamping point which has at least one clamping spring. which is in operative connection with the busbar piece.

The invention further relates to a terminal component, in particular a terminal, with a Isolierstoffgehäuse and at least one such Federkraftklemmanschluss.

Spring terminals for connecting electrical conductors are sufficiently well known in many forms.

So shows DE 1 917 503 A a screwless connection or connection terminal with a clamping spring, which is placed on a two-layer, folded conductor rail piece. Furthermore, there is described a terminal with a spiral compression spring which is mounted between a U-shaped clamping yoke and a recorded in the opening of the drawbar conductor rail piece. An electrical conductor is then clamped between a transverse edge of the drawbar and the busbar piece.

DE 10 2005 058 307 A1 discloses an electrical terminal with cage tension springs, which are mounted on a busbar. The busbar has folded on both sides side walls, with which a lateral guidance of a guided to a terminal point electrical conductor is effected.

Furthermore, it is off DE 198 18 704 C1 discloses a mounting base with protective conductor function for the installation of a high current terminal. In this case, a cross-sectionally U-shaped base plate is provided which is bent in quadrilateral areas in the direction of a mounting rail.

A mounting foot for a mounting rail which adjoins a busbar for a spring terminal connection is also in the DE 44 09 206 C1 described.

From the EP 2 395 605 A1 is a spring clamp and a terminal known. From the EP 0 871 243 A1 For example, an element for connecting a shield cable is known. From the JP S61 74962 U is a cage-like clamp known. From the GB 727 380 A Connecting devices for electrical cables are known.

Based on this, it is an object of the present invention to provide an improved spring force terminal.

The object is achieved with the spring-cage terminal with the features of claim 1 and by the terminal device with the features of claim 10. Advantageous embodiments are described in the subclaims.

For a generic spring terminal, it is proposed that a separate from the busbar piece current bar is introduced into the receiving space of the busbar piece and the current bar is arranged to form a terminal point for the clamping of an electrical conductor.

By introducing a separate current bar in a limited by side walls of the busbar piece receiving space is achieved that the Busbar piece itself can be made of a relatively thin and easy-to-molding material so that it is optimized for the holding function of the clamping spring and optionally for a guiding function. The separate current bar, on the other hand, can be optimized for its primary powerline function in terms of cross-section and material selection. In this case, a secure receiving of the current bar while simultaneously receiving and guiding the electrical conductor to the current bar is achieved by the limited by the side walls on both sides of the receiving space. Due to the separate design of the busbar piece to an additional current bar thus a separation of functions of the two components can be achieved.

The conductor rail piece of U-shaped cross-section does not necessarily have to be designed as an electrically conductive metal part. It can also be formed from a different material than the current bar or at least from a much thinner compared to the current bar sheet metal.

It is particularly advantageous if the current bar on the side facing the bearing surface of the current bar, with which the current bar rests on the conductor bar piece, has at least one protruding clamping edge. This ensures that an electrical conductor does not rest flat on the current bar, but the clamping force of the clamping spring is concentrated on a defined contact area (contact point), which is provided by the clamping edge. With the help of the above clamping edges, it is thus possible to increase the surface pressure of the electrical conductor to the current bar.

The spring terminal has at least one U-shaped cross-section clamp, which is mounted in a direction perpendicular to the plane of the support surface of the current bar on the bus bar piece movable on the busbar piece. The drawbar has at least one under the current bar Crossbar. This at least one transverse web and the adjacent current bar thereby form a terminal point for clamping an electrical conductor between the transverse web and the current bar. A clamping spring is in operative connection with the busbar piece and the associated drawbar to exert a spring force on the drawbar, forcing the crossbar of the associated bracket in the direction of current bar. Thus, a clamping force is exerted on an electrical conductor, which is positioned between the transverse web and the current bar.

The clamping spring may for example be a spiral compression spring. Such a spiral compression spring is placed between a head portion of the U-shaped drawbar, from which two Zugbügelarme extend at a distance from each other, and the busbar piece. In this case, the spiral compression spring can rest either directly on the busbar piece or on a connected to the busbar piece tunnel plate.

It is also conceivable that the clamping spring is a patch on the busbar piece cage tension. Such a cage tension spring has an abutment leg mounted on the busbar piece, a spring bow adjoining the contact leg, an actuating leg adjoining the spring bow and a clamping leg deflected by the actuating leg in the direction of the busbar piece. The clamping leg has a limited by a transverse web opening. The busbar piece protrudes through the opening together with the current bar adjacent thereto. The crosspiece forms together with the adjacent current bar a terminal point for clamping an electrical conductor between the crossbar and current bar.

With such a cage clamp a very compact spring terminal can be realized in which by means of the busbar piece a lateral Leadership is achieved. With the help of the separate current bar, an optimal current transfer is achieved with the lowest possible volume resistance. With the help of, for example, made of a thin sheet metal conductor piece, this can be easily folded, the wall thickness of the folded side walls to ensure a minimum possible width of the spring terminal connection are relatively thin. Thus, only the separate current bar must be adapted to the requirements for optimal electrical conduction of electricity and to the clamping of an electrical conductor.

It is particularly advantageous if fastening elements for fastening the current bar to the conductor rail piece are additionally present. Thus, the busbar piece is not only taken up in the laterally limited by the side walls receiving space of the busbar piece and fixed in position there, but also secured to the busbar piece. This can be done, for example, by riveting, welding, soldering, gluing or screwing the power bar to the busbar piece. For this purpose, the current bar and the busbar piece preferably have fastening holes through which suitable fastening parts, such as rivets, screws or the like are passed. These fasteners together with the mounting holes form fasteners in the context of the present invention.

Figur 1

- Seitenansicht einer ersten Ausführungsform eines Klemmenbauelementes mit einer Federkraftanschlussklemme;

Figur 2

- perspektivische Ansicht einer Federkraftanschlussklemme für das Klemmenbauelement aus Figur 1;

Figur 3

- perspektivische Ansicht eines im Querschnitt U-förmigen Stromschienenstücks mit daran aufgenommenen separaten Strombalken;

Figur 4

- perspektivische Ansicht des Strombalkens für die Federkraftanschlussklemme aus Figuren 1 bis 3;

Figur 5

- Seitenansicht des U-förmigen Stromschienenstücks mit daran aufgenommenen Strombalken mit der Schnittlinie C-C;

Figur 6

- Querschnittsansicht im Schnitt C-C durch das Stromschienenstück mit dem Strombalken aus Figur 5;

Figur 7

- Seitenansicht einer zweiten Ausführungsform eines Klemmenbauelementes mit einer Federkraftanschlussklemme;

Figur 8

- perspektivische Ansicht der Federkraftanschlussklemme für das Klemmenbauelement aus Figur 7;

Figur 9

- perspektivische Ansicht des im Querschnitt U-förmigen Stromschienenstücks mit daran aufgenommenen zweiteiligen Strombalken zur Bildung eines PE-Tragschienenanschlusses;

Figur 10 -

perspektivische Ansicht des zweiteiligen Strombalkens für die Federkraftanschlussklemme aus Figuren 7 bis 9;

Figur 11 -

perspektivische Ansicht einer dritten Ausführungsform einer Federkraftanschlussklemme mit Zugfeder.

The invention will now be described by way of example by way of example with the accompanying drawings. Show it:

FIG. 1

- Side view of a first embodiment of a terminal device with a spring-force connection terminal;

FIG. 2

- Perspective view of a spring terminal for the terminal component off FIG. 1 ;

FIG. 3

- Perspective view of a cross-sectionally U-shaped conductor rail piece with separate separate power bar;

FIG. 4

- Perspective view of the current bar for the spring-loaded connection terminal FIGS. 1 to 3 ;

FIG. 5

- Side view of the U-shaped busbar piece with picked up current bar with the section line CC;

FIG. 6

- Cross-sectional view in section CC through the busbar piece with the current bar off FIG. 5 ;

FIG. 7

- Side view of a second embodiment of a terminal device with a spring force terminal;

FIG. 8

- Perspective view of the spring terminal for the terminal device off FIG. 7 ;

FIG. 9

- Perspective view of the cross-sectionally U-shaped conductor rail piece with it received two-part current bar to form a PE DIN rail connection;

FIG. 10 -

perspective view of the two-part current bar for the spring-loaded connection terminal FIGS. 7 to 9 ;

FIG. 11

Perspective view of a third embodiment of a spring-loaded terminal with tension spring.

FIG. 1 shows a side view of a first embodiment of a terminal device 1 in the form of a high-current terminal block. The terminal component 1 has an insulating housing 2, in which a spring-force connection terminal 3 is installed. The spring-force connection terminal is provided for clamping and connecting two electrical conductors (not visible), which are introduced on opposite sides into conductor insertion openings 4 of the insulating housing 2. The spring terminal 3 has a busbar piece which is U-shaped in cross section and has a base 6 and on both sides of the base 6 angled side walls 7. In the receiving space between the opposite side walls 7 and the base 6, an electrical conductor is received, which is inserted through an associated conductor insertion opening 4. Such an electrical conductor is then pressed by means of an associated clamping spring 8 by its spring force in the direction of the base surface 6 of the busbar piece 5.

It can be seen that the left conductor terminal connection with the relaxed clamping spring 8 is in the clamping position in which an electrical conductor would be pressed in the direction of the base surface 6 of the conductor rail piece 5

The right conductor terminal connection, however, is in the open position, in which the clamping spring 8 is compressed by means of an actuating member 9 to open a clamping point for an electrical conductor.

The nip is in this case formed by at least one clamping edge at the lower end of a U-shaped tension bow 10 and by a current bar (not visible) on the base 6 in the bounded by the side walls 7 receiving space of the busbar piece 5. It is clear that in the clamping position in the left conductor terminal of the tension bow 10 is displaced by the relaxed compression spring upwards, so that the lower free end of the tension bow 10 moves in the direction of the base 6 compared to the open position of the right conductor terminal terminal.

The clamping spring 8 is in this embodiment, a spiral compression spring which is mounted between the base 11 of the drawbar 10 and a tunnel plate 14. The tunnel plate 14 is fastened with clamping straps 13 on the busbar piece 5. These clamping plates 13 engage in recesses in the side walls 7 of the busbar piece 5 in order to fix the tunnel sheet 14 with respect to their position.

Between the tunnel plate 14 and the base 6 of the conductor rail piece 5, a tunnel plate spring 15 is arranged, with which a pin contact of a jumper can be received and electrically contacted between the tunnel sheet 14 and the conductor rail piece 5.

The actuator 9 has a concentric by the clamping spring 8 extending therethrough threaded rod 16 which is rotatably mounted at the upper end to a pivot bearing 17 and in its longitudinal extension direction to the base 11 of the drawbar 10 and forms a thrust bearing. The threaded rod 16 dips into a corresponding threaded sleeve 18 of a clamping bush 12, which extends from the tunnel plate 14 in the direction of the base 11 of the drawbar 10 and is fastened to the tunnel plate 14. For example, by means of a screwdriver, which is inserted into an actuating head 19 at the free end of the threaded rod 16, the threaded rod 16 can be rotated. there retracts the threaded rod 16 in the threaded sleeve 18 or is unscrewed from the threaded sleeve 18 further to relax the clamping spring 8 or compress to open the nip. In the open position, which is shown for the right-hand conductor connection terminal, the clamping yoke 10 can be held in the open position with the aid of a locking element 20 displaceably mounted in the insulating housing 2. This locking element 20 is pressed from the outside of the insulating housing 2 in the direction of pivot bearing 17 to overlap the pivot bearing 17. The locking element 20 is spring-loaded by means of a compression spring 51 to achieve that the locking element 20 automatically moves back into the unlocked position (see position at the left Leiterklemmanschluss) when exerted by the yoke 10 and the pivot bearing 17 on the locking element 20 compressive force For example, by slightly pressing down the drawbar 10 in the direction of busbar piece 5 is reduced or canceled.

For guiding the opposite traction arms 21 of the U-shaped tie bar 10 corresponding guide grooves 22 are inserted into the insulating material.

FIG. 2 leaves a perspective view of the spring terminal 3 for the terminal device 1 from FIG. 1 detect. It is clear that the U-shaped clamping yokes 10 have a base 11 with an opening 23 for receiving the pivot bearing 17 of the actuating member 9. From the base 11 go on both sides of the trailing arms 21, which extend with its free end under the base 6 of the busbar piece 5. At the free ends of the spring arms 21 are transverse webs 24 which engage in a below the base 6 of the busbar piece 5 arranged current bar 25 and provide a terminal point for clamping an electrical conductor between the transverse webs 24 of the clamping yoke 21 and the current bar 25.

It is also clear that the traction arms 21 have a rectangular opening 26, for example, through which in particular the current bar 25 protrudes. By "protrude" is meant that the current bar 25 protrudes into the opening 26, without it matters whether the free end of the current bar 25 protrudes on the opposite side of the plane of the Zugarms 21 or not.

With the help of this separate current bar 25, a sufficient cross-section can be provided with optimally selected material for the current bar 25 with regard to the power line function. The busbar piece 5, however, can be made of a relatively thin and easily deformable sheet material, wherein it does not depend on the power line capability in the selection of materials. The busbar piece 5 can be formed from relatively inexpensive metal sheet or else from other, possibly also electrically insulating materials, such as fiber-reinforced plastic. Thus, it is conceivable that the busbar piece 5 itself is manufactured, for example by injection molding with suitable fiber reinforcement, as a metal casting or the like.

It can also be seen that the tunnel sheet 14 with the bearing arms 13 fixed in position is fastened to the busbar piece 5. The support plane of the tunnel plate 14 is spaced from the base 6 of the busbar piece 5, so that a gap for receiving the tunnel plate spring 15 (not in FIG. 2 shown) is present.

FIG. 3 leaves a perspective view of the busbar piece 5 from FIGS. 1 and 2 detect. It is clear that the busbar piece 5 is U-shaped in cross-section and has the base 6 with on both sides thereof by 90 ° outgoing side walls 7. Over the extension length of the busbar piece 5, three successive sections of side walls 7 are provided, wherein the two outer side walls are longer than the middle side wall. On the two outer side walls are on both sides each mounting holes 27 for receiving the mounting arms 13 of the clamping bush 12 is present.

Furthermore, in the base 6 fasteners in the form of mounting holes 28 are present. The current bar 25 is then fastened to the busbar piece 5 by means of rivets, screws or similar fastening elements 29 projecting through the fastening holes 28. It is also conceivable that the current bar 25 is welded in the region of the mounting holes 28 with the busbar piece 5 or possibly also glued.

It is also clear that the current bar 25 in the receiving space 35 of the U-shaped busbar piece 5, which is bounded by the opposing side walls 7 and the upper base, is taken up and is longer than the busbar piece 5. In this way, the free ends of the current bar 25 protrude from the busbar piece 5.

FIG. 4 lets a perspective view of the current bar 25 for the spring-loaded terminal from the FIGS. 1 to 3 detect. Here is the free, from the base 6 in the installed state in FIG. 3 pointing away clamping surface visible. It is clear that on this clamping surface in the region of the free ends and in the direction of the center spaced thereof clamping edges 30 are present. These clamping edges 30 are arranged at the height of the current bar 25 cross-tie arms 21, so that an electrical conductor is pressed by the cross bar 24 of a pull arm 21 against the associated protruding clamping edge 30. In this way, the clamping force of the clamping spring 8 is concentrated on the clamping edge 30 with its reduced area and increases the surface pressure, ie the clamping force per unit area.

It can also be seen that a protrusion 31 is provided in the central region, with which a V-shaped free space between the base surface 6 of the conductor rail piece 5 and the current bar 25 is formed in cross-section. A through a test opening 33 (see FIG. 3 ) guided in the busbar piece 5 through test tap 34 (see FIG. 2 ) then immersed with its free end in this test port 32 and enters into electrically conductive contact with the current bar 25th

FIG. 5 allows a side view of the busbar piece 5 with its arranged in the receiving space current bar 25 recognize. It is clear that the current bar 25 rests flat on the underside of the base 6 on the busbar piece 5. The cutting line CC is also recognizable.

FIG. 6 leaves the busbar piece 5 in FIG. 5 recognize with arranged in its receiving space 35 current bar 25. It is clear that the width of the current bar in the embodiment is less than the distance of the opposite side walls 7 and thus less than the width of the receiving space 35 formed thereby. The busbar piece 5 is thus spaced from the side walls 7 and adjacent to the base 6 of the busbar piece 5 at. It can also be seen that the protruding clamping edges 30 face down into the receiving space 35 and thus away from the opposite base area 6 in order to form a clamping point for an electrical conductor to be clamped.

It is also clear that the base 6 is deformed in the region of the section CC in the center in the direction of the current bar 25 in order to provide in this way a positive connection of the busbar piece 5 and the current bar 25.

FIG. 7 lets recognize a second embodiment of a terminal device 1 in the form of a terminal block. This is constructed in the construction of the conductor terminals with their clamping springs 8 and the tie bars 10 comparable to the first embodiment, so that reference can be made to the above.

A difference consists in the design of the current bar, which is in two parts in this embodiment and consists of a first current bar portion 25a and a second current bar portion 25b. The two current bar parts 25a, 25b are bent away from the plane of the base 6 of the busbar piece 5 in the central region in alignment with the test pin opening and the test pin 34 downward from the base 6 of the busbar piece 5 and extend into this area parallel to each other and lie against each other at. In the perpendicular from the base 6 of the busbar piece 5 facing away part 45a, 45b of the current bar parts 25a, 25b, the two adjacent sections of the current bar parts 25a, 25b are positively connected to each other, for example, by welding, riveting, caulking, locking or screwing. The extending away from the busbar piece 5 portions of the current bar parts 25a, 25b form support portions 37a, 37b, which are remote from the base 6 again facing away from each other with their free ends deflected. In order for a support of the terminal component 1 for Auflagerung on a support rail (not shown) is provided to Auflager the support rail on the support portions 37a, 37b and the free side edges of the support rail between the support portions 37a, 37b and locking lugs 38 of a Rastfußes 39 of the terminal component 1 lock.

FIG. 8 shows a perspective view of the spring terminal 3 for the second embodiment with the two-part current bar 25a, 25b to form a PE DIN rail connection recognize. As a result, an electrically conductive ground contact (PE or protective conductor contact) is provided, to electrically connect a support rail 40 to the current bars 25a, 25b and electrical conductors clamped thereto. This creates a protective earth terminal (PE terminal).

With the help of the two-part current bar 25a, 25b thus succeeds on the one hand, the electrical connection of the electrical conductors to the support rail 40 to provide a protective conductor contact and the mechanically fixed and secure Auflagerung the terminal component 1 on the mounting rail. For this purpose, DIN rail locking elements 41 are provided, which rest with a base 42 on the free ends of the support portions 37a, 37b of the current bar parts 25a, 25b. Two latching fingers 43 are then bent on the side walls of the free ends of the support portions 37a, 37b away from the busbar piece 5 down, so that arranged thereon locking lugs 38 engage under a free side edge 44 of a support rail 40. In this way, the support rail 40 is latched between the support portions 37 a, 37 b and the detents 38.

The cross-sectionally L-shaped DIN rail locking elements 41 are overlapped by a spring clip 36, which also engages over the vertical parts 45a, 45b of the current bar parts 25a, 25b. Thus, the latching fingers 43 of the DIN rail locking elements 41 are acted upon by the spring force of the spring clip 36 with a mutually facing force to lock on a support rail 40.

FIG. 9 allows a perspective view of the cross-sectionally U-shaped conductor rail piece 5 with the recorded in its receiving space 35 adjacent to the base 6 two-piece current bar 25a, 25b recognize. It is clear here that in the central area the two support sections 37a, 37b are bent away from the base 6 of the busbar section 5 parallel to the direction of the side walls 7 (downwards) and extend parallel to one another and adjacent to one another. The free ends of the support sections 37a, 37b are then deflected away from each other at a distance from the base surface 6 (at an angle of about 90 degrees +/- 10 degrees), in order to form in this way on a bearing surface for a mounting rail.

It is also clear that the free ends of the support portions 37a, 37b are tapered by lateral cuts to guide the locking element 41 with the free ends of the support portions 37a, 37b.

FIG. 10 shows a perspective view of the two-part current bar with the current bar parts 25a, 25b recognize. The current bar sections 25a, 25b in turn have projecting clamping edges 30. It is clear that the current bar sections 25a, 25b are bent in a J-shaped cross-section, the free end of the support sections 37a, 37b being substantially shorter than the opposing clamping sections extending parallel thereto, which rest on the base 6 of the associated U-shaped busbar piece 5.

The support sections 37a, 37b have an embossment 46 on their side facing the support rail 40 in order to reduce the contact surface with the support rail 40 and thus to increase the surface pressure for improved current transition values. The illustrated embodiment provides an optimally shortened current path from the clamped electrical conductor to the mounting rail 40.

FIG. 11 shows a perspective view of a third embodiment of a spring force terminal 3 with a cage tension spring 45 recognize. The cage tension spring 45 in a conventional manner a bearing on the busbar piece 5 bearing leg 46, to which a spring bow 47 connects. The spring bow is oriented in the unactuated clamping state so that an actuating leg 48 connects to the spring bow 47 at an angle of about 45 degrees +/- 20 degrees. This extends obliquely upwards in principle in the direction of the free end of the associated current bar 25 and is there under Forming a clamping leg 49 angled so that the clamping leg 49 extends back in the direction of current bar 25. The clamping leg 49 has a limited by a cross bar 50 opening 51 through which the free end of the current bar 25 protrudes. The transverse web 50 of the clamping leg 49 then forms, together with the adjacent current bar 25, a clamping point for clamping an electrical conductor between the transverse web 50 and the current bar 25.

Such a cage tension spring 45 can also be arranged on the opposite side. It is also conceivable that there is another terminal connection, such as a terminal connection with a clamping yoke of the first and second embodiment is formed.

Claims (10)

1. A spring-loaded connection terminal (3) having a busbar piece (5) which has a base surface (6) and side walls (7) which project from the sides of the base surface (6), wherein opposite side walls (7) delimit a receiving space (35) on both sides for receiving and guiding an electrical conductor, and having a terminal arrangement for terminal connection of an electrical conductor to an associated clamping point, said clamping arrangement having at least one clamping spring (8) which interacts with the busbar piece (5), at least one current bar (25, 25a, 25b), which is inserted into the receiving space (35) of the busbar piece (5) and is arranged in the receiving space (35) in order to form a clamping point for terminal connection of an electrical conductor, characterized in that the current bar (25, 25a, 25b) is separate from the busbar piece (5) and rests on the base surface (6).
2. The spring-loaded connection terminal (3) as claimed in claim 1, characterized in that the current bar (25, 25a, 25b) has at least one protruding clamping edge (30) on that side which is opposite the bearing surface of the current bar (25, 25a, 25b) by way of which the current bar (25, 25a, 25b) rests on the busbar piece (5).
3. The spring-loaded connection terminal (3) as claimed in claim 1 or 2, characterized in that at least one tensioning bracket (10) of U-shaped cross section is mounted on the busbar piece (5), such that it can move on the busbar piece (5), in a direction perpendicular to the plane of the bearing surface of the current bar (25, 25a, 25b), wherein the tensioning bracket (10) has at least one transverse web (24) which engages beneath the current bar (25, 25a, 25b), wherein the at least one transverse web (24) and the adjacent current bar (25, 25a, 25b) form a clamping point for terminal connection of an electrical conductor between the transverse web (24) and the current bar (25, 25a, 25b), and wherein a clamping spring (8) is operatively connected to the busbar piece (5) and the associated tensioning bracket (10) in order to exert a spring force, which forces the transverse web (24) of the tensioning bracket (10) in the direction of the current bar (25, 25a, 25b), on the tensioning bracket (10).
4. The spring-loaded connection terminal (3) as claimed in claim 3, characterized in that the clamping spring (8) is a spiral compression spring.
5. The spring-loaded connection terminal (3) as claimed in claim 1 or 2, characterized in that the clamping spring (8) is a cage tension spring (45) which is mounted on the busbar piece (5) and which has a contact limb (46) which is mounted on the busbar piece (5), a spring bend (47) which adjoins the contact limb (46), an operating limb (48) which adjoins the spring bend (47), and a clamping limb (49) which is deflected from the operating limb in the direction of the busbar piece (5), wherein the clamping limb (49) has an opening (51) which is delimited by a transverse web (50), the busbar piece (5), together with the current bar (25, 25a, 25b) which bears against it, projects through the opening (51), and the transverse web (50), together with the adjacent current bar (25, 25a, 25b), forms a clamping point for terminal connection of an electrical conductor between the transverse web (50) and the current bar (25, 25a, 25b).
6. The spring-loaded connection terminal (3) as claimed in one of the preceding claims, characterized in that the current bar (25a, 25b) consists of two parts, and the two parts of the current bar (25a, 25b) have bearing sections (37a, 37b) which project away from the busbar piece (5) from the bearing surface on the busbar piece (5), wherein the bearing sections (37a, 37b) form a bearing means for fastening the spring-loaded connection terminal (3) on a carrying rail (40) and for making electrical contact with the current bar (25a, 25b) by way of the carrying rail (40).
7. The spring-loaded connection terminal (3) as claimed in claim 6, characterized in that the bearing sections (37a, 37b) extend parallel to one another and such that they are supported on one another from that region which adjoins the busbar piece (5), and in that the free ends of the bearing sections (37a, 37b) are deflected such that they point away from one another.
8. The spring-loaded connection terminal (3) as claimed in claim 7, characterized in that a latching lug (39) for fastening the current bar (25a, 25b) to a carrying rail (40) is connected to the free ends of the bearing sections (37a, 37b).
9. The spring-loaded connection terminal (3) as claimed in one of the preceding claims, characterized by fastening elements (28, 29) for fastening the at least one current bar (25, 25a, 25b) to the busbar piece (5).
10. A terminal component (1), in particular a terminal block, having an insulating-material housing (2) and having at least one spring-loaded terminal connection (3) as claimed in one of the preceding claims in the insulating material housing (2), wherein the insulating-material housing (2) has at least one conductor insertion opening (4) which leads to an associated clamping point of the spring-loaded terminal connection (3) for inserting an electrical conductor and terminal connection of the inserted electrical conductor to the clamping point.

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