Spring connection terminal

Abstract

Spring terminal (1) for connecting an electrical conductor (2) with a busbar (100), a clamping spring (200), a housing (300) and a lever (400), wherein the lever (400) has a bearing disk (420) with a semicircular outer contour (421) for mounting the lever (400) in a counter bearing (520), and wherein the lever (400) has a driver (430) which, when the lever (400) is actuated, is designed to move the clamping arm (210) from a closed position (GS) to an open position (OS).

Description

[0001] The present invention relates to a spring connection terminal for electrical conductors.

[0002] A spring terminal, which can also be referred to as a conductor terminal, comprising a housing, a pivot lever, a current bar accessible via an insertion opening in the housing, and a clamping spring, is known, for example, from DE 10 2015 104 625 A1. The pivot lever of the conductor terminal has an axis strut rotatably mounted in the housing, about which the pivot lever can pivot between its open and closed positions. A receiving opening of the pivot lever is formed between an operating handle and a push-button element of the pivot lever, through which a retaining leg and a clamping leg of the clamping spring pass.

[0003] 10 2016 116 966 A1 relates to a spring-loaded terminal connection with at least one clamping spring for clamping an electrical conductor to the spring-loaded terminal connection. The spring-loaded terminal connection has an actuating element for opening a clamping point for the electrical conductor, which is formed at least partially by a clamping edge of the clamping spring. The actuating element has a spring engagement region configured to deflect an actuating section of the clamping spring, at least when the clamping point is opened. The actuating element is supported on a support section of the clamping spring against the force of the clamping spring acting on the spring engagement region.

[0004] The invention is based on the object of creating a spring connection terminal that is as improved as possible.

[0005] This problem is solved by the features of claim 1. Advantageous further developments are the subject of dependent claims.

[0006] Accordingly, a spring terminal is intended for connecting an electrical conductor. The spring terminal has a busbar, a clamping spring, a housing, and a lever.

[0007] The busbar and the clamping spring and the lever are at least partially accommodated in the housing.

[0008] The lever has a first bearing disc with a first part-circular outer contour for supporting the lever in a first counter bearing.

[0009] The lever has an operating handle that is connected to the first bearing disc.

[0010] The clamping spring has a clamping leg. The clamping leg, together with the busbar, forms a clamping point for clamping the electrical conductor to the busbar.

[0011] The lever has a driver which is designed to move the clamping leg from a closed position to an open position when the lever is actuated.

[0012] In an advantageous development, the lever has a second bearing disc with a second part-circular outer contour for supporting the lever in a second counter-bearing. The second bearing disc is spaced apart from the first bearing disc. The operating handle of the lever is connected to the first bearing disc and to the second bearing disc.

[0013] According to an advantageous further development, a width of the spring connection terminal is defined exclusively by the sum of the thicknesses of outer walls adjacent to the first bearing disc and second bearing disc, of the thicknesses of the first bearing disc and the second bearing disc and of the width of the space between the first bearing disc and the second bearing disc.

[0014] In an advantageous development, the clamping spring has a spring arch and a contact leg. The clamping leg is connected to the contact leg via the spring arch. Advantageously, the spring connection terminal has exactly one clamping leg, which is connected to the spring arch. This allows a compact design to be achieved. According to another development, in the closed position, the clamping leg and contact leg are essentially parallel to one another in one area. This area borders on the spring arch. In an advantageous development, the clamping leg rests against the busbar with a clamping edge under pretension. Advantageously, in the closed position, a free end of the clamping leg points with the clamping edge in the direction of the contact leg.

[0015] In an advantageous further development, a radius of the first bearing disc is greater than a thickness of the first bearing disc, so that the first bearing disc slides on its outer contour (running surface) for storage.

[0016] In an advantageous further development, a radius of the second bearing disc is greater than a thickness of the second bearing disc, so that the second bearing disc slides on its outer contour (running surface) for storage.

[0017] In an advantageous development, the first bearing disk is mounted on a wall of the spring-cage terminal for axial support. In an advantageous development, the second bearing disk is mounted on a wall of the spring-cage terminal for axial support. A plain bearing, for example, is provided for axial support.

[0018] In an advantageous development, the first counterbearing has a first bearing shell. The bearing shell is formed from at least a first section of the busbar and a first section of a contact leg of the clamping spring.

[0019] In an advantageous development, the second counterbearing has a second bearing shell. The second bearing shell is formed from at least a second section of the busbar and a second section of the contact leg of the clamping spring.

[0020] In an advantageous further development, the first section of the busbar and the first section of the contact leg are arranged at an obtuse angle to form the first bearing shell.

[0021] In an advantageous further development, the second section of the busbar and the second section of the contact leg are arranged at an obtuse angle to form the second bearing shell.

[0022] In an advantageous development, the first bearing shell and / or the second bearing shell have at least one straight section and / or at least one partially circular section. For example, a section of the busbar is at least partially straight and / or at least partially circular. For example, a section of the contact leg of the clamping spring is at least partially straight and / or at least partially circular.

[0023] In an advantageous development, one contact leg of the clamping spring has an opening for feeding the electrical conductor through the opening to the clamping point. The opening extends at least over the height and width of the conductor with a diameter permitted for the spring connection terminal. Advantageously, the opening extends into the spring bend. This allows, for example, the integration of additional functions into the spring connection terminal, for example, to pass a push button through the opening.

[0024] In an advantageous development, the contact leg of the clamping spring has a first web and a second web. Advantageously, the first web and the second web define the opening in the contact leg.

[0025] In an advantageous further development, the opening is closed by being surrounded on all sides by the material of the clamping spring. For example, the opening in the clamping spring is created by punching.

[0026] In an advantageous development, the first web forms a support for the first bearing disc of the lever. The first web is thus part of the first counterbearing and forms part of the first bearing shell. In an advantageous development, the second web forms a support for a second bearing disc of the lever. The second web is thus part of the second counterbearing and forms part of the second bearing shell.

[0027] In an advantageous development, the housing has a first guide wall and / or a second guide wall of a conductor guide channel. The conductor guide channel guides the electrical conductor to the terminal point. The electrical conductor is inserted from the outside through a conductor opening into the conductor guide channel. Advantageously, the first guide wall ends at the opening in the contact leg, for example, the first guide wall borders on the first web that delimits the opening. Advantageously, the second guide wall ends at the opening in the contact leg, for example, the second guide wall borders on the second web that delimits the opening. It is also possible for the first guide wall and / or the second guide wall to pass through the opening in the contact leg. In an advantageous development, the housing has a base body and a cover.Advantageously, the first guide wall and / or the second guide wall is formed in the cover of the housing.

[0028] In an advantageous further development, the first bearing shell has a first busbar wall section of the busbar with a partially circular inner contour.

[0029] In an advantageous further development, the second bearing shell has a second busbar wall section of the busbar with a part-circular inner contour.

[0030] In an advantageous development, a conductor guide channel for receiving the conductor in the area of ​​the first bearing disc and the second bearing disc is formed by a space between the first bearing disc and the second bearing disc. The space is bounded on at least one side by the busbar.

[0031] In an advantageous further development, the driver is arranged closer to the contact leg in the closed position than in the open position.

[0032] In an advantageous further development, the busbar has a first fork prong of a fork contact and the clamping spring has a second fork prong of the fork contact.

[0033] A further inventive aspect is a spring connection terminal for connecting an electrical conductor, with a busbar and with a clamping spring and with a housing and with a lever.

[0034] The busbar and the clamping spring and the lever are at least partially accommodated in the housing.

[0035] The clamping spring has a clamping leg. The clamping leg, together with the busbar, forms a clamping point for clamping the electrical conductor to the busbar.

[0036] The lever is designed to move the clamping leg from a closed position to an open position.

[0037] The busbar has a first fork prong of a fork contact.

[0038] The clamping spring has a second fork prong of the fork contact. Preferably, the contact leg and the second fork prong are formed integrally, particularly from spring steel. Advantageously, the second fork prong rests against the first fork prong with preload when no contact blade is inserted into the fork contact.

[0039] In an advantageous further development, the contact leg of the clamping spring rests on the busbar on a side opposite the clamping point.

[0040] In an advantageous development, the busbar has a contact section with the terminal point, a connecting section, and a first fork prong of a fork contact. The contact section of the busbar can also be referred to as the base section. Advantageously, the connecting section connects the contact section to the first fork prong. Advantageously, the contact section, the connecting section, and the first fork prong are formed integrally from a single metal part.

[0041] In an advantageous further development, the connecting section of the busbar is formed predominantly perpendicular to the contact section.

[0042] In an advantageous further development, the connecting section of the busbar is formed predominantly perpendicular to the first fork tine.

[0043] In an advantageous development, the clamping spring is mounted on the connecting section. The clamping spring preferably has a first bearing element for bearing on a side of the connecting section facing the clamping point and / or a second bearing element for bearing on a side of the connecting section facing away from the clamping point. Advantageously, the first bearing element and / or the second bearing element are formed integrally from the contact leg. Advantageously, the first bearing element and / or the second bearing element is formed by a projection of a tab from the contact leg. For example, the first bearing element and / or the second bearing element is formed by an edge of a tab.

[0044] In an advantageous development, the lever can be pivoted for actuation. In an advantageous development, the lever can be moved predominantly in a translational manner for actuation. Advantageously, the first counter-bearing and / or the second counter-bearing is designed for the translational movement of the lever. If, for example, the user presses on the actuating section, the lever slides in a predominantly translational movement to move the clamping leg into the open position. In an advantageous development, the first counter-bearing and / or the second counter-bearing is also designed to pivot the lever, so that actuation of the lever in a predominantly rotational movement moves the clamping leg into the open position.For example, the first counter bearing and / or the second counter bearing enable a translational and a rotational movement of the lever, so that the clamping leg can be actuated from the closed position to the open position by rotationally pivoting the operating handle and / or by translationally pressing the operating handle.

[0045] In an advantageous development, the driver is designed as a strut. The strut is advantageously arranged between the first bearing disc and the second bearing disc. The strut advantageously connects the first bearing disc to the second bearing disc. For example, the strut between the first bearing disc and the second bearing disc has a consistent cross-sectional shape. The strut is advantageously formed as a single piece. Alternatively, the strut can consist of two parts, with a first part of the strut being formed on the first bearing disc and a second part of the strut being formed on the second bearing disc.

[0046] In an advantageous development, the driver and the first bearing disc and the second bearing disc are formed as a single piece. For example, the first bearing disc and the second bearing disc and the driver are formed as a single piece from a single plastic part by injection molding. Advantageously, the entire lever is formed as a single piece.

[0047] In an advantageous development, the driver is arranged at least partially within the circular shape of the first bearing disc. The circular shape is formed by a partially circular outer contour of the first bearing disc. Outside the partially circular outer contour, the shape of the first bearing disc can deviate from an exact circle. Advantageously, the driver is arranged at least partially within the circular shape of the second bearing disc. The circular shape is formed by a partially circular outer contour of the second bearing disc. Outside the partially circular outer contour, the shape of the second bearing disc can deviate from an exact circle. For example, the first outer contour and / or the second outer contour is shaped in sections as an eccentric or oval.

[0048] In an advantageous development, the first part-circular outer contour of the first bearing disc and / or the second part-circular outer contour of the second bearing disc define a rotation axis of the lever when pivoting the lever from the closed position to the open position. Advantageously, the lever can be manually pivoted back from the open position to the closed position in an opposite pivoting movement. Preferably, the driver is arranged in the open position and in the closed position outside a space between the busbar and a plane parallel to it through the rotation axis. Thus, the driver is advantageously arranged outside the conductor guide channel in the open position and closed position. An inserted conductor does not collide with the driver. The driver has no guiding function for guiding the conductor.

[0049] In an advantageous development, the first part-circular outer contour of the first bearing disc and / or the second part-circular outer contour of the second bearing disc define a rotation axis of the lever when the lever is pivoted from the closed position to the open position. In an advantageous development, the driver has a curved surface. The driver is advantageously arranged and shaped such that when the lever is pivoted, the distance of the area of ​​the surface in contact with the clamping leg from the rotation axis changes. Advantageously, the distance to the rotation axis is greater in the open position than in the closed position. For example, the driver has a predominantly oval or predominantly elliptical cross-sectional shape.

[0050] In an advantageous further development, the driver extends predominantly parallel to the rotational axis. For example, the driver extends from the first bearing disc to the second bearing disc parallel to the rotational axis. It is also possible for the driver to be constructed in two or more parts, with the driver parts extending predominantly parallel to the rotational axis.

[0051] In an advantageous development, the clamping spring has a spring arch and a contact leg. The clamping leg is connected to the contact leg via the spring arch. The driver is advantageously arranged between the contact leg and the clamping leg. For example, the driver is arranged entirely between the contact leg and the clamping leg.

[0052] In an advantageous development, the first bearing disk is axially guided by a first outer wall of the housing. Advantageously, the axial guidance of the first bearing disk is formed exclusively by the first outer wall. In an advantageous development, the second bearing disk is axially guided by a second outer wall of the housing. Advantageously, the axial guidance of the second bearing disk is formed exclusively by the second outer wall. An outer wall is understood to mean a wall of the spring connection terminal that electrically insulates the electrical contact insert consisting of the busbar and the clamping spring from the outside. Accordingly, an outer wall is also understood to mean a wall that electrically insulates two contact inserts arranged next to one another. Each contact insert belongs to a spring connection terminal, whereby the housings of two spring connection terminals can be formed as a single piece.It is possible for the same wall to function as the outer wall of two adjacent spring terminals.

[0053] In an advantageous development, the first bearing shell comprises the first section of the busbar, the first section of the contact leg, and a first section of the housing. The first bearing shell is formed by three different parts. In an advantageous development, the second bearing shell comprises the second section of the busbar, the second section of the contact leg, and a second section of the housing. The second bearing shell is formed by three different parts. This allows the guiding and force application functions to be distributed, creating a compact spring-loaded terminal.

[0054] In an advantageous development, the housing comprises a receiving part with an interior space for accommodating at least the busbar, and a cover. The cover closes an opening in the receiving part facing the interior space. By configuring the housing as a receiving part and cover, a compact form of the spring connection terminal can be achieved. In an advantageous development, at least one conductor guide channel is formed in the cover, which has guide walls for guiding the electrical conductor to the terminal point.

[0055] In an advantageous development, a conductor guide channel for receiving the electrical conductor in the region of the first bearing disk and second bearing disk is formed at least partially by a space between the first bearing disk and the second bearing disk. In addition, the space can be delimited by the busbar in the base area. Advantageously, a first housing guide wall of the conductor guide channel and a first inner side of the first bearing disk facing the electrical conductor are aligned at least in the conductor insertion direction. Advantageously, a second housing guide wall of the conductor guide channel and a second inner side of the second bearing disk facing the electrical conductor are aligned at least in the conductor insertion direction. The surfaces are aligned within the manufacturing tolerances if a maximum edge remains between them which does not impede the insertion of the conductor in the conductor insertion direction. For example, the first orsecond inner side of the first or second bearing disc relative to the first or second housing guide wall.

[0056] In an advantageous development, the first web of the contact leg adjoins the first guide wall in the conductor insertion direction. Advantageously, the first bearing disc adjoins the first web in the conductor insertion direction. In an advantageous development, the second web of the contact leg adjoins the second guide wall in the conductor insertion direction. Advantageously, the second bearing disc adjoins the second web in the conductor insertion direction. Gaps between the guide wall and web, as well as between the web and the bearing disc, are thus reduced. The risk of a single wire of a stranded conductor becoming caught in the remaining gaps is reduced.

[0057] A further aspect is a spring connection terminal for connecting an electrical conductor to a busbar, to a clamping spring, to a housing, and to a lever. The lever has a first bearing disk with a first outer contour for supporting the lever in a first counter-bearing. The lever has an actuating handle connected to the first bearing disk. The clamping spring has a clamping leg. The clamping leg, together with the busbar, forms a clamping point for clamping the electrical conductor to the busbar. The lever has a driver designed to move the clamping leg from a closed position to an open position when the lever is pivoted. The first counter-bearing is designed to absorb the force of the clamping spring. The lever has a first pin that projects axially from the first bearing disk and is arranged in a receptacle in the housing.The pin positions the lever when the driver is not in contact with the clamping leg of the clamping spring. In an advantageous development, the first counter-bearing has a first section of the busbar and / or a first section of the clamping spring for absorbing the force of the clamping spring.

[0058] Below, features of the invention are explained in more detail using exemplary embodiments illustrated in the figures. It is possible to combine features of different exemplary embodiments. They show: Figure 1 shows an embodiment with a spring terminal in sectional view; Figure 2 shows the embodiment from Figure 1in the open position; Figures 3a and 3b show sectional views of an exemplary embodiment of a spring connection terminal; Figure 4 shows an exemplary embodiment of a contact insert of a spring connection terminal; Figure 5 shows an exemplary embodiment of a busbar of a spring connection terminal; Figure 6 shows an exemplary embodiment of a clamping spring of a spring connection terminal with a relaxed clamping leg; Figure 7 shows an exemplary embodiment of a clamping spring of a spring connection terminal with a deflected clamping leg; Figure 8 shows an exemplary embodiment with a spring connection terminal in a sectional view; Figure 9 shows an exemplary embodiment with a spring connection terminal in a side view; Figure 9a shows an exemplary embodiment with a spring connection terminal in a partial sectional view; Figure 9b shows an exemplary embodiment with a spring connection terminal in a sectional view; Figure 10 shows an exemplary embodiment with a spring connection terminal in a three-dimensional view;Figure 11 shows embodiments with parts of spring terminals in a three-dimensional view; Figures 12a and 12b show embodiments with a spring terminal in sectional views.

[0059] In Figure 1An embodiment with a spring connection terminal 1 is shown schematically in a sectional view. The spring connection terminal 1 can also be referred to as a spring-loaded terminal. Shown is a housing 300 in which a busbar 100, a lever 400, and a clamping spring 200 are accommodated. For electrical insulation, the electrically conductive components 100, 200 are preferably completely accommodated in the housing 300 made of an insulating material, for example plastic. If the spring connection terminal is approved exclusively for low voltage (up to 42 V), electrically conductive parts can protrude from the housing 300. The lever 400 is partially accommodated in the housing 300 and has an operating handle 490 that protrudes from the housing 300 for manual operation.

[0060] Due to the sectional view approximately through the middle of a conductor guide channel LF, the lever 400 is shown partially hidden by the housing 300. The lever 400 has a first bearing disc 410 with a first part-circular outer contour 411 for supporting the lever 400 in a first counter bearing 510. The actuating handle 490 is connected to the first bearing disc 410 via a web 415 (shown partially hidden). The first bearing disc 410 in the embodiment of the Figure 1 has the part-circular outer contour 411 with which the first bearing disc 410 is radially mounted.

[0061] The clamping spring 200 has a clamping leg 210, which, together with the busbar 100, forms a clamping point K for clamping an electrical conductor 2 to the busbar 100. In the area of ​​the clamping point K, the busbar 100 has a bulge 134 to increase the surface pressure and minimize the electrical contact resistance. The lever 400 has a driver 430, which is designed to move the clamping leg 210 from a closed position GS to an open position OS when the lever 400 is pivoted. Figure 1 Lever 400 and clamping leg 210 are shown in the closed position GS. In contrast, Figure 2 the lever 400 and the clamping leg 210 are shown in the open position OS.

[0062] Accordingly, by operating the lever 400, the clamping leg can be moved from the open position OS to the closed position GS. If an electrical conductor 2 has previously been inserted, the clamping leg 210 encounters the conductor 2 during the movement from the open position OS and clamps this conductor 2 against the busbar 100. If the lever 400 is then moved further toward the closed position GS, the driver 430 loses contact with the clamping leg 210, and the clamping force F spring then fully acts on the conductor 2. Advantageously, the components 410, 415, 430, and 490 of the lever 400 are molded in one piece from plastic.

[0063] The first bearing disc 410 is radially mounted in the counter bearing 510. The counter bearing 510 is formed in a combination of at least one section of the busbar 100 and at least one section of the clamping spring 200. This allows the spring force F spring introduced into the bearing disc 410 via the driver 430 to be transferred partly to the busbar 100 and partly to the clamping spring 200. In the embodiment of the Figure 1 and 2 the outer contour 411 of the first bearing disc 410 slides on a bottom section 130 of the busbar 100. Alternatively, or as in the Figure 1 and 2 Shown in combination, the outer contour 411 slides on a busbar wall section 110 with a part-circular inner contour 111. Advantageously, the geometry of the part-circular inner contour 111 of the busbar wall section 110 is adapted to the outer contour 411 of the first bearing disk 410.

[0064] In the example of Figure 1 The clamping spring 200 has the clamping leg 210 and a contact leg 220 and a spring arch 230 connecting the clamping leg 210 and the contact leg 220. In the embodiment of the Figure 1 The contact leg 220 extends from the spring arch 230 to the busbar 100 and further below the busbar 100. The contact leg 220 rests against the busbar 100. Advantageously, the contact leg 220 of the clamping spring 200 rests on the side of the busbar 100 opposite the clamping point K. In Figure 2 It is also shown that an extension 255 of the contact leg 220 of the clamping spring 200 is flared and projects into an opening in the busbar to form a fastening point. At the same time, the extension 255 of the contact leg 220, shaped as a tab, forms a wall that limits the maximum insertion depth of the conductor 2.

[0065] The contact leg 220 of the clamping spring 200 has an opening 229 which points towards the clamping point K. The conductor 2 is guided to the clamping point K through the opening 229. The opening 229 is delimited by the illustrated web 221 of the contact leg 220, wherein the first bearing disk 410 is mounted on the web 221 of the contact leg 220. The web 221 of the contact leg 220 is thus a component of the first counter-bearing 510. A housing wall 331 laterally delimits the conductor guide channel LF, so that a conductor 2 which is brought into the conductor connection terminal 1 from the insertion side ES is guided laterally through the housing wall 331, web 221 of the contact leg 220 and the inner side 412 of the bearing disk 410 which are arranged one behind the other in the conductor insertion direction ER. Advantageously, the housing wall 331, web 221 and inner side 412 are designed and arranged such that no edge opposes the conductor 2 in the insertion direction ER.Ideally, the housing wall 331 and web 221 and inner side 412 are aligned in the conductor insertion direction ER.

[0066] The spring terminal 1 is in the embodiment of the Figure 1 Designed for the direct insertion of a solid conductor 2. For this purpose, it is not necessary to pivot the lever 400 into the open position OS. During direct insertion, the conductor 2 is pushed through the conductor guide channel LF up to the clamping leg 210 and, due to the feed force, deflects the clamping leg 210 against the spring force F spring.

[0067] In the embodiment of the Figure 1It is shown that in an area adjacent to the spring arch 230, the clamping leg 210 and the contact leg 220 are arranged predominantly parallel in the closed position GS. The clamping leg 210 deviates from an exact mathematical parallelism to the contact leg 220 by less than 15°. This allows a high clamping force to be achieved by the clamping spring 200 while simultaneously achieving a compact design.

[0068] In the embodiment of the Figure 1 The housing 300 has a first housing part 340 and a second housing part 360, which are to be fastened to one another. The first housing part 340 forms a base body 340 with an interior space 345. The busbar 100 and the clamping spring 200 are accommodated in the interior space 345. The second housing part 360 forms a cover 360. The cover 360 of the housing 300 is accommodated in the interior space 345, wherein the cover 360 closes the interior space 345. In the embodiment of the Figure 1The cover 360 has the wall 331 of the conductor guide channel LF. The cover 360 is attached to the base body 340 of the housing 300 by fastening elements 361, 367. For example, the fastening elements 361, 367 are designed for a positive fit.

[0069] In the example of Figure 1 The lever 400 has an actuating handle 490 and a first web 415 and a second web 425, which are connected to the actuating handle 490, so that a gap is formed between the first web and the second web, in which the clamping leg 210 and a housing web 380 of the first housing part 340 are arranged. The housing web 380 extends through the gap.

[0070] In the example of Figure 1The housing web 380 has a fastening element 348 for fastening to the second housing part 360, the cover 360. The fastening element 348 of the housing web 380 is designed as an undercut 348, to which a locking hook 363 of the cover 360 is assigned.

[0071] In the example of Figure 2The housing web 380 has a fastening element 343 for fastening to the cover 360. The fastening element 343 of the housing web 380 is designed as a latching hook 343. The cover 360 has an undercut 366 that matches the latching hook 343. In both exemplary embodiments, the fastening elements 361, 362 are designed as locking elements or associated edges. In both cases, the housing web 380 extends through the space between the first web 415 and the second web 425 of the lever 400. Likewise, the clamping leg 210 of the clamping spring 200 extends through the space between the first web 415 and the second web 425. This configuration achieves several advantages. It is possible to provide a particularly large adjustment range for the lever 400, so that the actuating force experienced by the user can be kept low due to the transmission. At the same time, the spring connection terminal 1 can be made particularly small.The space between the webs 415, 425 and the bearing discs 410, 420 at the free ends of the webs 415, 425 is used synergistically in a very small space by the housing web 380, the clamping leg 210 and the driver 430, so that a particularly compact arrangement can be achieved.

[0072] In the embodiment of the Figure 2 It is shown that the housing web 380 in the area of ​​the clamping spring 200 has a thickness that ensures a distance of at least 1.3 mm between the clamping spring 200 and a touchable outer surface of the housing 300. The 1.3 mm provides sufficient clearance and creepage distances.

[0073] The busbar 100 has in the embodiment of the Figure 1In addition to the base section 130, which acts as a contact section, a fork contact 160 with a first fork prong 163 and a second fork prong 164. The first fork prong 163 and the second fork prong 164 are fixedly connected to one another by a connecting wall 165. Advantageously, the base section 130, the first and second fork prongs 163, 164 and the connecting wall 165 are formed integrally from a piece of metal, for example by stamping and bending. The fork contact 160 is arranged in a mating face 370 of the housing 300. The mating face 370 has an opening 371 leading to the fork contact 160 for a contact blade (not shown). As an alternative to the embodiment of the Figure 1 the spring connection terminal 1 may have a contact blade (not shown) which is formed integrally with the base section 130 of the busbar 100.

[0074] In Figure 2Lever 400 and clamping leg 210 are shown in a sectional view in the open position OS. The clamping leg 210 is deflected in the open position OS. The spring force F spring acts on the driver and is directed approximately through the pivot point D. The pivot point D is defined by the part-circular outer contour 411 of the first bearing disc 410. In this embodiment, the Figure 2 the lever 400 is held in an over-center position.

[0075] In the examples of the Figure 1 and 2In the spring connection terminal 1, the first part-circular outer contour 411 of the first bearing disk 410 defines a rotation axis D of the lever 400 when the lever 400 pivots from the closed position GS to the open position OS. The driver 430 has a curved surface 435, so that when the lever 400 pivots, the distance d of the area of ​​the surface 435 in contact with the clamping leg 210 from the rotation axis D changes. The distance d is greater in the open position OS than in the closed position GS.

[0076] In Figure 2 the driver 430 is positioned closer to the free end of the clamping leg 210 in the open position OS than in the closed position GS in Figure 1Accordingly, with the deflection of the clamping leg 210 of the clamping spring 200, the spring force F spring increases, while at the same time, the lever arm length between the contact area of ​​the driver 430 with the clamping leg 210 and the spring arch 230 also increases. Both effects partially compensate each other, so that the user experiences a smaller increase in the lever actuation force on the actuating handle 490 during pivoting. At the end of the pivoting movement, the lever 400 falls into the open position OS.

[0077] At the free end of the clamping leg 210, a clamping edge 211 is formed, which is positioned at an incline of the busbar, so that a conductor 2 is guided into the conductor receiving pocket AT formed by the busbar 100 and the tab 255, first by the clamping leg 210 and then immediately through the busbar 100. At the same time, the conductor 2 is also guided in the insertion direction ER, opposite the base, through the base section 130 of the busbar 100 and also laterally. This guide also allows multi-stranded conductors or stranded wires with many individual conductors to be connected using the spring-loaded terminal 1.

[0078] Not shown in the Figure 1 and 2is an embodiment in which the lever 400 has two bearing discs. This reduces bearing forces and also reduces tilting of the lever 400. A lever 400 with a first bearing disc 410 and a second bearing disc 420 is used in the embodiment of the Figures 3a and 3b shown in a horizontal section. Figure 3a the lever in the closed position GS and Figure 3bthe lever 400 in the open position OS. The first bearing disc 410 is connected to a driver 430. The second bearing disc 420 is connected to the driver 430. Advantageously, the first bearing disc 410 and the second bearing disc 420 are connected to one another by the driver 430. This can increase the stability of the lever 400, particularly for a smaller lever 400. Alternatively, the driver 430 is formed in two parts. In this case, the driver 430 is, for example, partially molded onto the first bearing disc 410 and partially onto the second bearing disc 420. Advantageously, the first bearing disc 410 and the second bearing disc 420 and the driver 430 are formed in one piece from one material. Advantageously, the bearing discs 410, 420 are formed from plastic. Alternatively, it is possible to form the driver as a separate element, for example as a split pin or mandrel.For example, the driver is made of a metal.

[0079] In Figure 3b It can be seen that the first bearing disc 410 is connected to a first web 415 and the second bearing disc 420 is connected to a second web 425. Both webs 415, 425 are connected to the operating handle (not visible in the section), so that the lever 400 forms a U-shape at whose free ends the bearing discs 410, 420 are formed. The first bearing disc 410 is mounted in a first counterbearing consisting of the base section 130 of the busbar 100 and a first web 221 of the contact leg 220. The second bearing disc 420 is mounted in a second counterbearing consisting of the base section 130 of the busbar 100 and a second web 222 of the contact leg 220.

[0080] A space R for the conductor 2 is formed between a first inner side 412 of the first bearing disc 410 and a second inner side 422 of the second bearing disc 420. This space R is in the closed position GS, as shown in Figure 3a shown, limited by the clamping leg 210. In the open position OS according to Figure 3b The space R continues to be bounded laterally by the webs 415, 425. The conductor 2 inserted in the open position OS passes over the bulge 134 and can be securely clamped to the bulge 134. Alternatively, a bulge can be formed at another location, or a ribbed base section or a plurality of bulges is possible (not shown).

[0081] The first bearing disc 410 is axially supported by a first housing wall 341. The second bearing disc 420 is axially supported by a second housing wall 342. The first bearing disc 410 is radially supported in the first counter-bearing by means of the first part-circular outer contour 411, wherein the first counter-bearing is designed to absorb the force of the clamping spring 200. The lever 400 has a first pin 451 protruding axially from the first bearing disc 410. The first pin 451 is arranged in a first receptacle 351 of the housing 300. The lever 400 is supported by the first pin 451 during pivoting when the driver 430 is not in contact with the clamping leg 210 of the clamping spring 200. If, however, the driver 430 rests on the clamping leg 210, the force of the clamping spring 200 is transferred to the first counter bearing via the driver 430 and the first bearing disc 410.The receptacle 351, for example, has a slight amount of play so that the force of the clamping spring 200 does not act predominantly on the pin 451 and the receptacle 351. The pin 451 and the receptacle 351 ensure that the lever 400, when out of contact with the clamping spring 200, is not loosely movable in the housing 300, but is held in position by the pin 451 and the receptacle 351. These two coordinated bearings of the first bearing disc 410 can effectively prevent the lever 400 from wobbling when out of contact with the clamping spring 200. At the same time, good bearing support is ensured with high spring force, and the clamping spring 200 can still be of simple design.

[0082] A first pin 451 on the first bearing disc 410 is sufficient for positioning, so that no second pin is required on the second bearing disc 420. However, if both bearing discs 410, 420 are designed with pins 451, 452, the risk of the lever 400 tilting can be further reduced. The lever 400 has the second pin 452 protruding axially from the second bearing disc 420. The second pin 452 is arranged in a second receptacle 352 of the housing 300. The second pin 452 positions the lever 400 during pivoting when the driver 430 is not in contact with the clamping leg 210 of the clamping spring 200. If, however, the driver 430 rests on the clamping leg 210, the force of the clamping spring 200 is transferred to the second counter bearing via the driver 430 and the second bearing disc 420.The receptacle 352, for example, has a slight amount of play so that the force of the clamping spring 200 does not act predominantly, ideally not at all, on the pin 452 and the receptacle 352. The pin 452 and the receptacle 352 ensure that the lever 400, when out of contact with the clamping spring 200, is not loosely movable in the housing 300, but is held in position by the pin 452 and the receptacle 352. These two coordinated bearings of the second bearing disk 420 can effectively prevent a loose lever 400 from becoming out of contact with the clamping spring 200. At the same time, good bearing is ensured by the second counterbearing with high spring force in contact with the clamping spring 200, and the clamping spring 200 can still be of simple design.

[0083] In the examples in Figures 3a and 3bIt is shown that the housing 300 has a first guide wall 331 and / or a second guide wall 332 of a conductor guide channel LF. The conductor guide channel LF guides the electrical conductor (not shown) to the terminal point K. For this purpose, the electrical conductor is to be inserted from the outside into an opening for the conductor and through the conductor guide channel in the conductor insertion direction ER. The first guide wall 331 and / or a second guide wall 332 are formed, for example, in a cover 360 of the housing 300. Advantageously, the first guide wall 331 is continued by the first bearing disc 410 for guiding the conductor, wherein between the first guide wall 331 and the first bearing disc 410 in the embodiment of the Figure 3athe first web 221 of the contact leg 220 is arranged. Advantageously, the second guide wall 332 is continued by the second bearing disc 420 for guiding the conductor, wherein between the second guide wall 332 and the second bearing disc 420 in the embodiment of the Figure 3a the second web 222 of the contact leg 220 is arranged. After being guided by the first guide wall 331 and the second guide wall 332, the conductor exits through the opening 229 in the contact leg 220 into the space R between the bearing discs 410, 420. Furthermore, the base section 130 of the busbar 100 and, opposite, the clamping leg 210 of the clamping spring 200 can contribute to the guidance.

[0084] In Figure 4A contact insert of an embodiment of a spring connection terminal 1 is shown in a three-dimensional view. For a view of a first counter bearing 510, a clamping leg 210 of a clamping spring 200 is shown interrupted. In reality, this clamping leg 210 of the clamping spring 200 is of course continuous. A busbar 100 and the clamping spring 200 of the spring connection terminal 1 are shown. A lever for moving the clamping leg 210 is in the embodiment of the Figure 4 A housing for accommodating the contact insert can, if required, be provided in the embodiment of the Figure 4 be supplemented.

[0085] The clamping spring 200 has a spring arch 230 and a contact leg 220 and the clamping leg 210. The clamping spring 200 is advantageously formed and bent in one piece from spring steel. The clamping spring 200 is optimized to permanently ensure a contact force of an electrical conductor (not shown) on the busbar 100. The clamping leg 210 is connected to the contact leg 220 via the spring arch 230. In the exemplary embodiment of the Figure 4 The clamping spring 200 has exactly one clamping leg 210 for an electrical conductor (not shown). Furthermore, the contact insert of the embodiment in Figure 4 a fork contact 160. The contact leg 220 of the clamping spring 200 forms a fork prong 262 of the fork contact 160.

[0086] The contact insert of the embodiment in Figure 4also has the busbar 100. The busbar 100 is advantageously made of metal, for example galvanized copper, which is optimized for electrical conductivity under defined ambient conditions. Alternatively, the busbar 100 is made of a copper alloy or another metal. Advantageously, the busbar 100 is refined, in particular silver-plated or gold-plated. The busbar 100 has a bottom section 130, which can also be referred to as contact section 130. The bottom section 130 has in the embodiment of the Figure 4a bulge 134 on the contact side, which, together with a clamping edge 211 of the clamping leg 210, forms a contact point K for the electrical conductor. The busbar 100 has a connecting section 170 that is predominantly perpendicular to the base section 130 and a fork tine 163 of the fork contact 160. Accordingly, the busbar 100 has the first fork tine 163 of a fork contact 160. The clamping spring 200, on the other hand, has the second fork tine 262 of the fork contact 160. The second fork tine 262 of the clamping spring 200 rests under pretension against the first fork tine 163 of the fork contact 160.

[0087] The fork 163 of the busbar 100 is connected to the base section 130 via the connecting section 170. In the embodiment of the Figure 4The connecting section 170 of the busbar 100 is formed predominantly perpendicular to the first fork tine 163. If a blade contact (not shown) is connected in the fork contact 160 and an electrical conductor (not shown) is connected to the terminal point K, a current can flow from the electrical conductor via the base section 130 and via the connecting section 170 and via the fork tine 163 into the blade contact. Preferably, the base section 130 and the connecting section 170 and the fork tine 163 of the busbar 100 are formed integrally from a single piece of metal.

[0088] In the embodiment of the Figure 4A spring connection terminal 1 is shown with a first counterbearing 510 for a first bearing disc (not shown) and / or a second counterbearing 520 for a second bearing disc (not shown). Only the first counterbearing 510 or the second counterbearing 520 can be provided; however, both counterbearings 510, 520 are particularly advantageously provided for secure mounting.

[0089] The first counter bearing 510 has a first bearing shell 510, which is formed from at least a first section 131 of the busbar 100 and a first section 221 of a contact leg 220 of the clamping spring 200. The first section 131 of the busbar 100 is formed in the base region 130 of the busbar 100. The first section 131 of the busbar 100 has a flat surface for the bearing. Alternatively, the surface is curved (not shown) corresponding to the first bearing disc in order to enlarge the support surface. An independent inventive aspect provides that the curvature 134 for the contact point K is positioned such that the first section 131 of the busbar 100 extends into the curvature 134, so that the first bearing disc is also mounted on the curvature 134.

[0090] In the embodiment of the Figure 4It is provided that the first section 131 of the busbar 100 and the first section 221 of the contact leg 220 are arranged at an obtuse angle to form the first bearing shell 510. For example, the angle is in a range of 90° to 140°, in particular in the range of 100° to 120°.

[0091] In the embodiment of the Figure 4 The contact leg 220 of the clamping spring 200 has a first web 221. The first web 221 defines an opening 229 in the contact leg 220. The first web 221 forms a support for the first bearing disc of a lever. Thus, the first web 221 is part of the first counter-bearing 510. Advantageously, the first web 221 has a width that is adapted to a width of the first section 131 of the busbar 100.

[0092] The second counter bearing 520 has a second bearing shell 520, which is formed at least from a second section 132 of the busbar 100 and a second section 222 of a contact leg 220 of the clamping spring 200. The second section 132 of the busbar 100 is formed in the base region 130 of the busbar 100. The second section 132 of the busbar 100 has a flat surface for the bearing. Alternatively, the surface is curved (not shown) corresponding to the second bearing disc in order to enlarge the support surface. An independent inventive aspect provides that the curvature 134 for the contact point K is positioned such that the second section 132 of the busbar 100 extends into the curvature 134, so that the second bearing disc is also mounted on the curvature 134.Advantageously, the main extension directions of the first section 131 and the second section 132 of the busbar 100 are formed substantially parallel to one another.

[0093] In the example of Figure 4 It is provided that the second section 132 of the busbar 100 and the second section 222 of the contact leg 220 are arranged at an obtuse angle to form the second bearing shell 520. For example, the angle is in a range of 90° to 140°, in particular in the range of 100° to 120°.

[0094] In the example of Figure 4The contact leg 220 of the clamping spring 200 has a second web 222. The second web 222 defines an opening 229 in the contact leg 220. The second web 222 forms a support for the second bearing disc of a lever. Thus, the second web 222 is part of the second counter bearing 520. Advantageously, the second web 222 has a width that is adapted to a width of the second section 132 of the busbar 100.

[0095] In principle, only the first web 221 or only the second web 222 could be formed. Advantageously, however, the first web 221 and the second web 222 are formed together. Advantageously, the first web 221 and the second web 222 are formed substantially parallel.

[0096] In the example of the spring terminal 1 in Figure 4the contact leg 220 of the clamping spring 200 has an opening 229 for feeding the electrical conductor through the opening 229 to the clamping point K. In Figure 4 It is shown that the webs 221, 222 limit the opening 229. In the embodiment of the spring terminal 1 in Figure 4 the opening 229 extends into the spring arch 230. Also in the embodiment of the spring connection terminal 1 in Figure 4The opening 229 extends below the busbar 100. The geometry of the opening 229 allows, for example, an actuating element (not shown) to pass through the opening 229 to deflect the clamping leg 210 for opening. For example, the actuating element is a pusher, plunger, or lever of the spring-cage terminal 1. The opening 229 also allows actuation by an external actuating tool (also not shown). Alternatively, it is possible for a web of an insulating housing (also not shown) to pass through the opening 229 to achieve greater stability.

[0097] In the example of the spring terminal 1 in Figure 4The clamping spring 200 is mounted on the busbar 100. This mounting allows the busbar 100 and clamping spring 200 to be preassembled and are suitable for bulk materials. The contact leg 220 of the clamping spring 200 extends along the side of the base section 130 of the busbar 100 opposite the contact point K and rests on the base section 130 of the busbar 100 opposite the contact point K. At the contact point K, the clamping leg 210 rests with pretension on the base section 130 of the busbar 100, so that the base section 130 is gripped between the clamping leg 210 and the contact leg 220.

[0098] In the example of the spring terminal 1 in Figure 4the clamping spring 200 is mounted on the connecting section 170. Advantageously, the clamping spring 200 is mounted on the connecting section 170 on both sides of the connecting section 170. The two-sided mounting reliably prevents the busbar 100 from being displaced relative to the clamping spring 200 in its main extension direction, in particular in the conductor insertion direction ER or counter to the conductor insertion direction ER. Advantageously, the clamping spring 200 has a first bearing element 251 for bearing on a side of the connecting section 170 facing the clamping point K and / or a second bearing element 252 for bearing on a side of the connecting section 170 facing away from the clamping point K. Advantageously, the first bearing element 251 and the second bearing element 252 are formed in one piece with the contact leg 220, for example from spring steel.

[0099] In Figure 5An embodiment with a busbar 100 is shown in a three-dimensional view. The busbar 100 has two fastening elements 135, 136, which can be used when the busbar 100 is to be fastened in a housing, in particular in an insulating housing made of plastic. The two fastening elements 135, 136 form, for example, locking elements that lock behind an edge of the housing or that penetrate into the plastic of the housing. The busbar 100 has, in the region of the connecting section 170, a recess 171, into which an element of the clamping spring 200 (for example, the bearing element 251 in Figure 4 or Figure 6) engages, so that the busbar 100 and the clamping spring 200 are connected in a form-fitting manner. In the conductor insertion direction ER, a conductor (not shown) first encounters a bevel 139 of the busbar 100, so that in the insertion direction ER the conductor does not encounter any edge on which the conductor or individual wires of the conductor could catch. The bevel 139 is formed by freeing and reshaping a short tab 139 which is bent into the opening 229. The tab 139 additionally supports the busbar 100 relative to the contact leg 220 of the clamping spring 200, so that the busbar 100 in the region of the tab 139 cannot be moved relative to the contact leg 220 transversely to the conductor insertion direction ER. The busbar 100 engages with the tab 139 in the opening 229 and forms an anti-twist protection so that the contact insert consisting of the busbar 100 and the clamping spring 200 can be pre-assembled in bulk.

[0100] In Figure 6An embodiment of a clamping spring 200 of a spring connection terminal with relaxed clamping leg 210 is shown in three-dimensional view. In Figure 6 It is shown that the opening 229 extends into the horizontal section of the contact leg 220. The opening 229 is designed such that the clamping leg 210 extends into the opening 229 in the neutral state. For mounting the busbar 100 from Figure 5 the clamping leg 210 would first have to be deflected, as shown in Figure 7 is shown. The busbar 100 would then be pushed laterally onto the contact leg 220 of the clamping spring 200. In this case, a bulge 256 of the contact leg 220 of the clamping spring 200 and the bulge 171 of the busbar 100 mesh. Figure 5 . If the clamping leg 210 is then released, the clamping leg 210 presses on the bottom section 130 of the busbar 100, as in Figure 4In the example of the Figure 6 It is shown that the bearing element 251 is punched out of the contact leg 220 and bent out, whereby the further opening 254 is created in the contact leg 220.

[0101] In the embodiment of the Figure 7 the fork tine 262 of the clamping spring 200 is narrowed in the contact area 268 by an indentation 269 to approximately half the width, so that two contact areas 268 of two clamping springs 200 can be positioned next to each other, so that the contact area of ​​the other spring (not shown) is positioned in the indentation 269.

[0102] In Figure 8An exemplary embodiment of a spring-cage terminal 1 for connecting an electrical conductor is shown in a sectional view. The electrical conductor is not shown. For connection, the conductor is inserted into the spring-cage terminal 1 in the insertion direction ER. The spring-cage terminal 1 has a busbar 100 and a clamping spring 200, as well as a housing 300 and a lever 400. The busbar 100 and the clamping spring 200 form a contact insert for electrically connecting the conductor to the busbar 100.

[0103] In the example of Figure 8 the busbar 100 and the clamping spring 200 and partly the lever 400 are accommodated in the housing 300. Figure 9 shows an embodiment with parts of a spring connection terminal 1 in side view, wherein a part of the housing 300 is omitted for the view of the lever 400 and clamping spring 200 and busbar 100.

[0104] The lever 400 has a first bearing disc 410 with a first part-circular outer contour 411 for supporting the lever 400 in a first counter bearing 510. First bearing disc 410, first part-circular outer contour 411 and first counter bearing 510 are in Figure 8 shown. The lever 400 has a second bearing disc 420 with a second part-circular outer contour 421 for supporting the lever 400 in a second counter bearing 520. Second bearing disc 420, second part-circular outer contour 421 and second counter bearing 520 are shown in Figure 9 The examples of the Figure 8 and 9 are different, but can be combined with each other. The second bearing disc 420 is spaced from the first bearing disc 410. Between the first bearing disc 410 and the second bearing disc 420, a part of the clamping leg 210 of the clamping spring 200 is arranged, which in Figure 8 is shown in section.

[0105] The lever 400 has an actuating handle 490, which in the embodiment of the Figure 8 with the first bearing disc 410 over the first web 415 and in the embodiment of the Figure 9 is connected to the second bearing disc 420 via the second web 425. The clamping spring 200 has the clamping leg 210 and a spring arch 230 and a contact leg 220. The clamping leg 210 forms with the busbar 100 a clamping point K for clamping the electrical conductor to the busbar 100. The lever 400 has a driver 430 which is designed to move the clamping leg 210 from a closed position GS into an open position when the lever 400 is pivoted. In the embodiments of the Figure 8 and 9The closed position GS is shown in each case. Advantageously, the lever 400 can also be adjusted from the open position back to the closed position GS. In the closed position GS, the clamping leg 210 is predominantly parallel to the contact leg 220 in the area adjacent to the spring arch 230. The clamping leg 210 and the contact leg 220 are predominantly parallel if the deviation from a mathematical parallelism is less than 15°, in particular less than 10°. This allows a compact arrangement of the lever 400, spring terminal 200 and busbar 100 to be achieved. In the Figure 8 In the illustrated embodiment, the clamping leg 210 rests with a prestress against a base region 130 of the busbar 100. This enables conductors with a small cross-section to be securely clamped.

[0106] In the embodiment of the Figure 8The first counter bearing 510 has a first bearing shell 510, which is formed from at least a first section 131 of the busbar 100 and a first section 221 of the contact leg 220 of the clamping spring 200. Advantageously, both first sections 131, 221 form an obtuse angle in the - as in Figure 8 shown - the first bearing disc 410 is received. The first bearing disc 410 contacts the first section 131 of the busbar 100 at least linearly. By a curvature in the first section 131 of the busbar 100, the bearing surface in the first section 131 can be enlarged (not shown). The first bearing disc 410 contacts the first section 221 of the contact leg 220 at least linearly. By a curvature in the first section 221 of the contact leg 220, the bearing surface in the first section 221 can be enlarged (not shown).

[0107] In the embodiment of the Figure 9The second counter bearing 520 has a second bearing shell 520, which is formed from at least a second section 132 of the busbar 100 and a second section 222 of the contact leg 220 of the clamping spring 200. Advantageously, both second sections 132, 222 form an obtuse angle in the - as in Figure 9 shown - the second bearing disk 420 is received. The second bearing disk 420 contacts the second section 132 of the busbar 100 at least linearly. By a curvature in the second section 132 of the busbar 100, the bearing surface in the second section 132 can be enlarged (not shown). The second bearing disk 420 contacts the second section 222 of the contact leg 220 at least linearly. By a curvature in the second section 222 of the contact leg 220, the bearing surface in the second section 222 can be enlarged (not shown).

[0108] In the examples of the Figure 8 and 9A combinable, independent inventive aspect is shown. The lever 400 has a driver 430, which is designed to move the clamping leg 210 from a closed position GS into an open position when the lever 400 is pivoted. The driver 430 is in the embodiments of the Figure 8 and 9 as a strut 430, which is arranged between the first bearing disc 410 and the second bearing disc 420. The strut 430 connects the first bearing disc 410 to the second bearing disc 420. This effectively reduces any potential tilting of the bearing discs 410, 420 when the spring force from the clamping leg 210 acts on the bearing discs 410, 420 via the driver 430. In this case, the bearing discs 410, 420 can, for example, be made thinner, so that a compact spring connection terminal 1 is achieved.

[0109] In the examples of the Figure 8 and 9The driver 430 and the first bearing disc 410 and the second bearing disc 420 are formed integrally from a plastic. For example, the entire lever 400 is formed integrally from a plastic. The driver 430 is shaped such that it extends predominantly parallel to a rotation axis D. The rotation axis D is defined by the first part-circular outer contour 411 of the first bearing disc 410 and by the second part-circular outer contour 421 of the second bearing disc 420. The respective part-circular outer contours 411, 421 define a circular shape KF whose center is the rotation axis D.

[0110] In the embodiment of the Figure 8 It is shown that the driver 430 is arranged at least partially within the circular shape KF of the second bearing disc 420. In the embodiment of the Figure 8It is shown that the driver 430 is arranged at least partially within the circular shape KF of the first bearing disc 410. In the embodiment of the Figure 8 The cross-sectional shape of the driver is predominantly oval. However, other cross-sectional shapes, such as elliptical or more complex cross-sectional shapes of the driver can also be provided. In the embodiment of the Figure 8 the driver 430 extends predominantly parallel to the rotation axis D. The driver 430 is arranged between the contact leg 220 and the clamping leg 210. In the embodiments of the Figure 8 and 9 The driver 430 is arranged in an area between the contact leg 220 and the clamping leg 210, in which the contact leg 220 and the clamping leg 210 are predominantly parallel to each other in the closed position GS. This allows a compact arrangement of the spring connection terminal 1 to be achieved.

[0111] In the embodiment of the spring terminal 1 according to Figure 8 The housing 300 has a receiving part 340 with an interior space 341 for receiving the busbar 100 and the clamping spring 200. A cover 360 is received in the interior space 341. The cover 360 closes an opening of the receiving part 340 facing the interior space 341. In the embodiment of the Figure 8 A part of the conductor guide channel LF with the guide wall 331 is formed in the cover 360.

[0112] In Figure 9a and 9b An embodiment with two spring-cage terminals 1 is shown in a partial sectional view. The spring-cage terminal 1 has a busbar 100 and a clamping spring 200, as well as a housing 300 and a lever 400. The busbar 100 and the clamping spring 200 and the lever 400 are at least partially accommodated in the housing 300. The lever 400 is mounted within the housing 300 and is designed to actuate a clamping leg 210 of the clamping spring 200.

[0113] The housing 300 has a first housing part 340 and a second housing part 360. In the respective right spring connection terminal 1 in the embodiments of the Figure 9a and 9b the second housing part 360 is removed to reveal the elements of the spring terminal 1 located behind it. The first housing part 340 is designed as a base body 340, into which the second housing part 360, which is designed as a cover 360, is inserted to close a cavity in the interior of the base body 340 and to ensure electrical insulation. Accordingly, in the exemplary embodiment of the Figure 9a and 9b the base body 340 and the cover 360 are made of an electrically insulating material, for example plastic.

[0114] The first housing part 340 has a housing web 380 which is inserted into the Figure 9a and 9bis shown only in section. An example of the geometric shape of the housing web 380 in its main direction of extension is shown in Figure 2 The embodiment of the Figure 2 can be used with the example of Figure 9a and 9b to form the spring terminal 1. As in the embodiment of the Figure 2 and the embodiment of the Figure 9a and 9b the housing web 380 has a fastening element 343 for fastening to the second housing part 360. In Figure 9a The fastening element 343 can be seen as a locking hook 343, which, as shown in the left illustration of the Figure 9a shown, engages behind an undercut 366 of the cover 360.

[0115] The lever 400 has an operating handle 490 and a first web 415 and a second web 425. The operating handle 490 is connected to the first web 415 and the second web 425. A gap is formed between the first web 415 and the second web 425. As shown in Figure 9b As shown, the gap between the first web 415 and the second web 425 is penetrated at least by the housing web 380. Additionally, the gap can also be penetrated by a clamping leg 210 of the clamping spring 200. The clamping leg 210, together with the busbar 100, forms a clamping point for clamping the electrical conductor to the busbar 100.

[0116] As in Figure 9a and the Figure 10As shown, in a closed position GS, the first web 415 of the lever 400 and the second web 425 of the lever 400 and the housing web 380 and walls 341, 342 of the housing 300 form a substantially flat surface. Together with the actuating handle 490 of the lever, a predominantly closed surface is also formed. In the embodiment of the Figure 9a and in the embodiment of the Figure 10 For this purpose, the housing web 380 has a recess for receiving the operating handle 490 in the closed position.

[0117] In the embodiment of the Figure 9b and in the embodiment of the Figure 10 It is shown that the first web 415 of the lever 400 and / or the second web 425 of the lever 400 is guided on the housing web 380. Accordingly, upon actuation of the lever 400, the lever 400 can be pivoted, wherein the first web 415 and / or the second web 425 slides on the housing web 380 during the pivoting movement.

[0118] In Figure 10 is an embodiment of a spring terminal 1 for connecting an electrical conductor 2. The spring terminal 1 has a housing 300 that in the Figure 10 to illustrate elements of the spring connection terminal 1 arranged in the housing 300. The housing can be made of a transparent or non-transparent material. A busbar 100 and a clamping spring 200 and partially a lever 400 are accommodated in the housing 300. The busbar 100 is inserted with an edge of a base section 130 into a groove 356 of the housing 300 for fastening. The base section 130 has a fastening element 136 which fixes the busbar 100 in the groove 356 relative to the housing 300. For example, the fastening element 136 is designed as a flared tab 136 whose edge is directed against the wall of the groove 356.

[0119] The lever 400 has a first bearing disc 410 with a first outer contour 411 for supporting the lever 400 in a first counter bearing. The lever 400 has an actuating handle 490, which is connected to the first bearing disc 410 via a web 415. The clamping spring 200 has a clamping leg 210. The clamping leg 210 forms, together with the busbar 100, a clamping point for clamping the electrical conductor 2 to the busbar 100. In the embodiment of the Figure 10 The electrical conductor 2 is already clamped in the spring connection terminal 1. The clamping leg 210 of the clamping spring 200 is deflected and presses the conductor 2 against the busbar 100. A clamping edge 211 of the clamping leg 210 presses into the electrically conductive material of the electrical conductor 2. Ideally, the electrical conductor 2 is deformed by the clamping edge 211, so that the pull-out force is significantly increased.

[0120] The lever 400 has a driver 430 which is designed to move the clamping leg 210 from a closed position to an open position when the lever 400 is pivoted. In the embodiment of the Figure 10 The state in which the lever 400 is in the closed position is shown. At the same time, however, the electrical conductor 2 is inserted and the clamping leg 210 of the clamping spring 200 is deflected, so that the clamping leg 210 does not rest against the driver.

[0121] The first bearing disc 410 rests against the first counter bearing, wherein the first counter bearing is designed to absorb the force of the clamping spring 200. The first counter bearing in the embodiment of the Figure 10has both a first section 221 of a contact leg 220 and a first section 131 of the busbar 100. The contact leg 220 has an angled portion 225, so that the contact leg 220 is in contact with the first bearing disc 410 and extends through an obtuse angle of the angled portion 225 to below the busbar 100, thus resting against the busbar 100 on the side opposite the contact point.

[0122] The force of the clamping spring 200 acts via the clamping leg 210 and the driver 430 and the first bearing disc 410 only on the first counter bearing when the clamping leg 210 rests against the driver 430. For this to happen, Figure 10 First, the lever 400 must be pivoted into the open position.

[0123] The lever 400 has a first pin 450 which projects axially from the first bearing disc 410 and is arranged in a receptacle 350 of the housing 300. Pin 450 and receptacle 350 position the lever 400 when the driver 430 - as in Figure 10 shown - is not in contact with the clamping leg 210 of the clamping spring 200. In the embodiment of the Figure 10 the pin 450 is circular, wherein the receptacle 350 in the housing 300 is partially circular. The radius r Z of the circular pin 450 is significantly smaller than the radius r L of the first bearing disc 410. In the embodiment of the Figure 10 the radius r Z of the circular pin 450 is less than half the radius r L of the first bearing disc 410. In the embodiment of the Figure 10 the pin 450 and the first bearing disc 410 have the same pivot point D. Alternatively (in Figure 10In some configurations (not shown), the pivot points D of the journal 450 and the first bearing disc 410 are spaced apart from each other. It is also possible for the journal to deviate from a circular shape and, for example, be mounted in a floating manner.

[0124] In the embodiment of the Figure 10 The pin 450 is formed on the side of the first bearing disc 410 opposite the driver 430—facing outward. Alternatively, it is possible, for example, to form the pin 450 and the receptacle 350 on the same side as the driver 430—facing inward.

[0125] In principle, the pin 450 shown is sufficient for the function of positioning the lever 400. In addition to the pin 450, another pin (in Figure 10 (not shown) on a second bearing disc 420, in particular arranged symmetrically. Accordingly, the lever 400 would be designed symmetrically. Tilting of the lever 400 would be reduced.

[0126] The receptacle 350 has an at least partially circular inner contour in which the pin 450 is rotatably mounted. The at least partially circular inner contour of the receptacle 350 can have a larger radius than the radius r Z of the pin 450. The receptacle 350 is designed in its shape and position such that when the clamping leg 210 rests against the driver 430, no or a significantly reduced force is transmitted from the clamping spring 200 via the pin 450 to the receptacle 350. For assembly, in the exemplary embodiment, the Figure 10 a groove 355 is provided in the housing 300, via which the pin 450 with the lever 400 can be pushed into the receptacle 350 during an assembly step.

[0127] In Figure 10A further inventive aspect is shown. A first bearing shell of a first counterbearing for the first bearing disk 410 is formed together by a first section 131 of the busbar 100 and a first section 221 of the contact leg 220 and a first section of the housing 300. Advantageously, a second bearing shell of a second counterbearing for the second bearing disk 420 is formed together by a second section of the busbar 100 and a second section of the contact leg 220 and a second section of the housing 300.

[0128] In the example of Figure 10 It is shown that the housing 300 has stops for the lever 400 for the open and closed positions. In Figure 10 It is shown that the lever 400 strikes the plastic housing 300 in the closed position.

[0129] In Figure 11Several exemplary embodiments with busbars and clamping springs of different spring-cage terminals 10, 20, 30, 40 are shown in a three-dimensional view. The contact area between spring-cage terminals 10, 20, 30, 40 is shown, but housings, etc., are not shown for simplicity.

[0130] Elements of four spring connection terminals 10, 20, 30, 40 are shown, with the fourth spring connection terminal 40 having a fork contact with a fork prong 163 of the busbar and a fork prong 262 of the clamping spring. The first and second spring connection terminals 10, 20 each have a blade contact, with the contact blade 166 formed by the busbar. The third spring connection terminal 30 has a fork contact, with the fork prongs 161, 162 being part of the busbar. The fork prongs 262 of the clamping springs each have a bulge 269, so that the clamping springs of the first, second, and fourth spring connection terminals 10, 20, 40 can be manufactured as identical parts. Only the third spring connection terminal 30 has a different clamping spring (not shown).

[0131] The Figure 12a and 12b show an embodiment of a spring terminal 1 for connecting an electrical conductor 2. In Figure 12aThe spring terminal 1 is shown in section with a lever 400 in the open position OS and with the conductor inserted. Figure 12b The spring connection terminal 1 with the lever 400 in the closed position GS is also shown in a sectional view.

[0132] The spring terminal 1 comprises a busbar 100, a clamping spring 200, a housing 300, and the lever 400. The busbar 100, the clamping spring 200, and the lever 400 are at least partially housed in the housing 300. Advantageously, the housing 300 is made of an electrically insulating material, for example, plastic.

[0133] The lever 400 has a first bearing disc 410 with a first part-circular outer contour for supporting the lever 400 in a first counter bearing. The counter bearing is in the embodiment of the Figures 12a and 12b formed by a contact leg 220 of the clamping spring 200. Due to the sectional view, Figures 12a and 12b It is not apparent that the lever 400 has a second bearing disc with a second part-circular outer contour for supporting the lever 400 in a second counter bearing. The second counter bearing is also formed by the contact leg 220 of the clamping spring 200. The second bearing disc is spaced from the first bearing disc 410. The clamping spring 200 in the embodiment of the Figures 12a and 12b has a clamping leg 210 and a spring arch 230, wherein the contact leg 220 is connected to the clamping leg 210 via the spring arch 230. In Figure 12b It is shown that the contact leg 220 has an opening 229 for the passage of the conductor 2 to the terminal point K. The opening 229 is limited laterally by webs, in the sectional view of the Figure 12bA web 221 is shown in plan view. The contact leg 220 extends below the busbar 100 and has an extension 255 for attachment to the busbar 100. The extension 255 also serves to limit the insertion depth of the conductor 2.

[0134] The busbar 100 has a base section 130 for clamping the conductor 2. Furthermore, the busbar 100 has two fork prongs 163, 164 for forming a fork contact 160, wherein both fork prongs 163, 164 are connected via a connecting section 165 of the busbar 100. Advantageously, both fork prongs 163, 164, connecting section 165, and base section 130 are formed integrally from a metal. The busbar 100 has a bulge 134 in the direction of the conductor 2 to be clamped, which increases the surface pressure on the conductor 2 and thus enables improved electrical contact. Alternatively, multiple bulges or a roughened or grooved surface of the base section 130 can be provided for conductor contact.

[0135] In the example of Figures 12a and 12bThe lever 430 has a driver 430 which, upon pivoting movement of the lever 400 from a closed position GS to an open position OS, moves a clamping leg 210 of the clamping spring 200. For actuation by the user, the lever 400 has an actuating handle 490 which is connected to the first bearing disc 410 and to the second bearing disc. The clamping leg 210 forms, together with the busbar 100, a clamping point K for clamping the electrical conductor 2 to the busbar 100. In the embodiment of the Figures 12a and 12b The driver 430 is formed on an inner side of the first bearing disc 410. In the open position OS, the driver 430 is positioned closer to a free end of the clamping leg 210 than in the closed position GS.

[0136] In the Figures 12a and 12bIt can be seen that in this embodiment, the driver 430 is arranged closer to the contact leg 420 in the closed position GS than in the open position OS. The spring connection terminal 1 of the embodiment of the Figures 12a and 12b can thus be made particularly compact.

[0137] The first part-circular outer contour 411 of the first bearing disc 410 defines a rotational axis D of the lever 400 when the lever 400 pivots from the closed position GS to the open position OS. The rotational axis D is preferably stationary over the pivoting path. However, the outer contour 411 can also define a displacement of the rotational axis D in the sense of an instantaneous center of rotation if the outer contour 411 additionally has a non-part-circular section. Preferably, however, the first bearing disc 410 is in contact with the counterbearing only via the part-circular outer contour 411.

[0138] The driver 430 is in the embodiment of the Figures 12a and 12b in the open position OS and in the closed position GS outside a space R between the busbar 100 and a plane E parallel thereto through the axis of rotation D or above the axis of rotation D. The space R is advantageously delimited laterally by the first bearing disc 410 and the second bearing disc. In addition, the space R is delimited in the base area by the base section 130 of the busbar 100. Preferably, the space R is part of a conductor guide channel LF to the clamping point K. The driver 430 is arranged outside the conductor guide channel LF both in the closed position GS and in the open position OS, so that a conductor 2 to be inserted does not collide with the driver 430. Accordingly, the shape of the driver 430 can be optimized for the function of deflecting the clamping leg 210.

[0139] In the embodiment of the Figures 12a and12b The housing 300 has a mating face 370 for the fork contact 160. An opening 371 for the insertion of a contact blade (not shown) is provided in the mating face 370. The housing 300 has a wall 331 for forming a conductor guide channel LF. The conductor guide channel LF is wider in the initial area, as shown in Figure 12a shown, to receive a part of an insulation 22 of the conductor 2. The core 21 of the conductor 2 extends beyond the contact point K to ensure a good and reliable electrical contact. The insertion depth for the core 21 of the conductor 2 is limited by the extension 255. In the embodiment of the Figures 12a and 12b the housing 300 is formed from at least two parts 340, 360 which are fastened to one another by means of fastening points 361, 362.

[0140] In the example of Figure 12aThe lever 400 has an actuating handle 490 and a first web 415. Furthermore, the lever 400 can have a second web. In Figure 12a the second web would not be visible due to the sectional view. The operating handle 490 is connected to the first web 415 and to the second web, with a gap ZR being formed between the first web 415 and the second web. As shown in the Figures 12a and 12b As shown, the clamping leg 210 extends through the space ZR between the first web 415 and the second web of the lever 400.

[0141] The housing 300 has a first housing part 360 and a second housing part 340. The second housing part 340 is designed as a base body 340, and the first housing part 360 is designed as a cover 360. The cover 360 can be attached to the base body 340 and has an opening in the base body 340 facing the contact insert made up of the clamping spring 200 and the busbar 100.

[0142] The first housing part 360 has a housing web 381. The housing web 381 extends in its main direction of extension from the cover 360 to the base body 340. The housing web 381 has a fastening element 361 for fastening to the second housing part 340. The base body 340 as the second housing part has a fastening point 346 matching the fastening element 361. In the embodiment of the Figure 12a the fastening element 361 is designed as a locking hook 361 and the fastening point 346 as an associated undercut 346.

[0143] The housing web 381 extends through the gap ZR between the first web 415 and the second web. This allows the spring connection terminal 1 to be particularly narrow, since the attachment of the housing parts 340, 360 to one another does not result in any additional width.

[0144] In the embodiment of the Figure 12aIt is shown that the first web 415 of the lever 400 and / or the second web 425 of the lever 400 is formed at an angle to a main extension direction of the actuating handle 490. This allows a large adjustment range to be achieved. At the same time, the actuating section 490 of the lever 400 is in the closed position GS in Figure 12b to the housing 300, and the spring terminal 1 is correspondingly compact. To achieve greater stability, additional locking mechanisms 362, 347 can be provided between the first housing part 360 and the second housing part 340. List of reference symbols

[0145] 1, 10, 20, 30, 40 Spring terminal 2 Electrical conductor 21 Core 22 Insulation 100 Busbar 110 Busbar wall section 111 Partially circular inner contour 130 Base section, contact section 131, 132 Busbar section 134 Bulge 135, 136 Fastening element 139 Inclined, insertion bevel 160 Fork contact 161, 162, 163, 164 Leg, fork tine 165 Connecting wall 166 Blade contact 170 Connecting section, vertical section 171 Indentation 200 Clamping spring 210 Clamping leg 211 Clamping edge 220 Contact leg 221, 222 Web 225 Angular portion 229 Opening 230 Spring arch 251, 252 Bearing element 254 Opening 255 Extension, tab 262 Leg, fork tine 268 Contact zone 269 Bulge 300 Housing 310, 320 Housing section 311, 321 Part-circular inner contour 315 Housing surface, stop 331, 332 Guide wall 340 Housing receiving part, base body 341, 342 Housing wall 345 Interior 350, 351, 352 Pin receptacle, radial bearing, auxiliary bearing 355, 356 Groove 360 ​​Cover 343, 346, 347, 348, 361, 362, 363, 366,367Fastening element, locking element, undercut 370Mating face 371Opening 380, 381Housing web 400Lever 410, 420Bearing disc 411, 421Part-circular outer contour 412, 422Inside 415, 425Web 430Carrier 435Surface of the carrier 451, 452Bearing element, pin 490Operating handle 510, 520Counter bearing, bearing shell, bearing recess , dDistance r L , r Z Radius t Z , t L Thickness ATConductor pocket ELevel ERInsertion direction ESInsertion side GSClosed position DRotation axis F Spring Spring force vector KKlamping point KRContact frame LFConductor guide channel OSOpen position RRace ZRGap

Claims

1. Spring connection terminal (1) for connecting an electrical conductor (2), - with a busbar (100), - with a clamping spring (200), - with a housing (300), - with a lever (400), in which - the busbar (100) and the clamping spring (200) and the lever (400) are at least partially accommodated in the housing (300), - the lever (400) has a first bearing disc (410) with a first part-circular outer contour (411) for supporting the lever (400) in a first counter-bearing (510), - the lever (400) has an actuating handle (490) which is connected to the first bearing disc (410), - the clamping spring (200) has a clamping leg (210), wherein the clamping leg (210) forms a clamping point (K) with the busbar (100) for clamping the electrical conductor (2) to the busbar (100), - the lever (400) has a driver (430),which is designed to move the clamping leg (210) from a closed position (GS) to an open position (OS) when the lever (400) is actuated.

2. Spring connection terminal (1) according to claim 1, wherein the lever (400) has a second bearing disc (420) with a second part-circular outer contour (421) for mounting the lever (400) in a second counter bearing (520), wherein the second bearing disc (420) is spaced from the first bearing disc (410), wherein the actuating handle (490) is connected to the first bearing disc (410).

3. Spring connection terminal (1) according to claim 2, wherein the second bearing disc is guided axially by a second outer wall of the housing, wherein preferably the axial guidance of the second bearing disc is formed exclusively by the second outer wall.

4. Spring connection terminal (1) according to one of claims 1 to 3, a. wherein the first counter-bearing (510) is designed to absorb the force of the clamping spring (200), b. wherein the lever (400) has a first pin (450, 451) which projects axially from the first bearing disc (410) and is arranged in a receptacle (350) of the housing (300), c. wherein the pin (450, 451) positions the lever (400) when the driver (430) is not in contact with the clamping leg (210) of the clamping spring (200).

5. Spring terminal (1) according to claim 4, wherein the pin (450, 451) and the receptacle (350) are formed on the same side as the driver (430).

6. Spring connection terminal (1) according to one of claims 1 to 5, wherein the first counter bearing (510) has a first section of the busbar (100) for absorbing the force of the clamping spring (200), and / or wherein the first counter bearing (510) has a first busbar wall section (110) of the busbar (100) with a part-circular inner contour (111), and / or wherein a section of the busbar is at least partially part-circular.

7. Spring connection terminal (1) according to one of claims 1 to 6, in which - the clamping spring (200) has a spring arch (230) and a contact leg (220), and - the clamping leg (210) is connected to the contact leg (220) via the spring arch (230).

8. Spring connection terminal (1) according to one of claims 1 to 7, in which - the housing (300) has a first guide wall (331) and / or a second guide wall (332) of a conductor guide channel (LF), wherein the conductor guide channel (LF) guides the electrical conductor (2) to the clamping point (K).

9. Spring connection terminal (1) according to one of claims 1 to 8, wherein the driver (430) is arranged closer to the contact leg (220) in the closed position (GS) than in the open position (OS).

10. Spring connection terminal (1) according to one of claims 1 to 9, in which - the contact leg (220) of the clamping spring (200) rests on the busbar (100) on a side opposite the clamping point (K).

11. Spring connection terminal (1) according to one of claims 1 to 10, wherein a radius of the first bearing disc (410) is greater than a thickness of the first bearing disc (410), so that the first bearing disc (410) slides on its outer contour (411) for storage.

12. Spring connection terminal (1) according to one of claims 1 to 11, wherein the first counter bearing (510) is designed to pivot the lever (400) so that actuation of the lever (400) in a predominantly rotary movement moves the clamping leg (210) into the open position (OS).

13. Spring connection terminal (1) according to one of claims 1 to 12, wherein the driver (430) is designed as a strut, wherein preferably the strut has a constant cross-sectional shape, wherein preferably the strut is designed in one piece.

14. Spring connection terminal (1) according to one of claims 1 to 13, wherein the driver (430) and the first bearing disc (410) are formed in one piece, and / or wherein the first bearing disc (410) and the driver (430) are formed in one piece from a plastic part by injection molding, and / or wherein the entire lever (400) is formed in one piece.

15. Spring connection terminal (1) according to one of claims 1 to 14, wherein a circular shape is formed by the part-circular outer contour (411) of the first bearing disc (410), wherein the driver (430) is arranged at least partially within the circular shape of the first bearing disc (410).

16. Spring connection terminal (1) according to one of claims 1 to 15, wherein outside the part-circular outer contour (411) the shape of the first bearing disc (410) deviates from an exact circle.

17. Spring connection terminal (1) according to one of claims 1 to 16, wherein the first part-circular outer contour (411) of the first bearing disc (410) defines an axis of rotation (D) of the lever (400) when pivoting the lever (400) from the closed position (GS) into the open position (OS).

18. Spring connection terminal (1) according to claim 17, wherein the axis of rotation (D) is stationary over the pivoting path and / or wherein the lever (400) can be manually pivoted back in an opposite pivoting movement from the open position (OS) into the closed position (GS).

19. Spring connection terminal (1) according to claim 17 or 18, wherein the driver (430) in the open position (OS) and in the closed position (GS) is arranged outside a space (R) between the busbar (100) and a plane (E) parallel thereto through the axis of rotation (D) or above the axis of rotation (D) and is thus arranged in the open position (OS) and closed position (GS) outside the conductor guide channel (LF).

20. Spring connection terminal (1) according to one of claims 17 to 19, wherein the driver (430) is arranged and shaped such that when the lever (400) is pivoted, the distance of the area of ​​the surface in contact with the clamping leg (210) from the axis of rotation (D) changes.

21. Spring connection terminal (1) according to one of claims 17 to 20, wherein the distance to the axis of rotation (D) is greater in the open position (OS) than in the closed position (GS).

22. Spring connection terminal (1) according to one of claims 17 to 21, wherein the driver (430) extends predominantly parallel to the axis of rotation (D).

23. Spring connection terminal (1) according to one of claims 1 to 22, wherein an inserted conductor (2) does not collide with the driver (430) and / or wherein the driver (430) has no guiding function for guiding the conductor (2).

24. Spring connection terminal (1) according to one of claims 1 to 23, wherein the driver (430) has a curved surface and / or wherein the driver (430) has a predominantly oval or predominantly elliptical cross-sectional shape.

25. Spring connection terminal (1) according to one of claims 1 to 24, wherein the first bearing disc (410) is mounted for axial mounting on a wall of the spring connection terminal (1) and / or wherein the first bearing disc (410) is axially guided by a first outer wall of the housing (300), wherein preferably the axial guidance of the first bearing disc (410) is formed exclusively by the first outer wall, wherein preferably the outer wall electrically insulates the electrical contact insert comprising the busbar (100) and the clamping spring (200) from the outside.

26. Spring connection terminal (1) according to one of claims 1 to 25, wherein the first bearing disc (410) with the part-circular outer contour (411) is mounted radially and / or wherein the first bearing disc (410) is mounted radially in the counter bearing (510).

27. Spring connection terminal (1) according to one of claims 1 to 26, wherein the outer contour (411) slides on a busbar wall section (110) with a part-circular inner contour (111), wherein preferably a geometry of the part-circular inner contour (111) of the busbar wall section (110) is adapted to the outer contour (411) of the first bearing disc (410).

28. Spring connection terminal (1) according to one of claims 1 to 27, wherein, when the clamping leg (210) is deflected in the open position (OS), a spring force (F Feder ) acts on the driver (430) and is directed approximately through a pivot point (D) which is defined by the part-circular outer contour (411) of the first bearing disc (410).

29. Spring connection terminal (1) according to one of claims 1 to 28, wherein the driver (430) is formed on an inner side of the first bearing disc (410).

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