Spring terminal block

Abstract

Spring terminal (1) for connecting an electrical conductor (2), - with one busbar (100), - with a clamping spring (200), - with a case (300), - with a lever (400), at the - the busbar (100) and the clamping spring (200) and the lever (400) are at least partially enclosed in the housing (300), - the lever (400) has a first bearing disk (410) with a first semicircular outer contour (411) for bearing 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, 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-loaded terminal block for electrical conductors.

[0002] A spring-loaded terminal block, which can also be called a conductor terminal block, 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 block has an axis strut rotatably mounted in the housing, about which the pivot lever can be pivoted between its open and closed positions. A receiving opening for the pivot lever is formed between an operating handle and a push element of the pivot lever, through which a retaining leg and a clamping leg of the clamping spring are passed.

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

[0004] The invention is based on the objective of creating a spring-loaded terminal block 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] Therefore, a spring-loaded terminal block is provided for connecting an electrical conductor. The spring-loaded terminal block has a busbar, a clamping spring, a housing, and a lever.

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

[0008] The lever has a first bearing disc with a first semicircular outer contour for mounting 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 forms a clamping point with the busbar for clamping the electrical conductor to the busbar.

[0011] The lever has a driver which, when the lever is actuated, moves the clamping arm from a closed position to an open position.

[0012] In an advantageous embodiment, the lever has a second bearing disk with a second semicircular outer contour for mounting the lever in a second counter-bearing. The second bearing disk is spaced apart from the first bearing disk. The operating handle of the lever is connected to both the first and second bearing disks.

[0013] According to an advantageous embodiment, the width of the spring terminal clamp is defined exclusively by the sum of the thicknesses of the outer walls adjacent to the first bearing disk and the second bearing disk, the thicknesses of the first bearing disk and the second bearing disk, and the width of the space between the first bearing disk and the second bearing disk.

[0014] In a preferred embodiment, the clamping spring has a spring arc and a contact leg. The clamping leg is connected to the contact leg via the spring arc. Advantageously, the spring terminal has exactly one clamping leg that is connected to the spring arc. This allows for a compact design. According to another embodiment, in the closed position, the clamping leg and the contact leg are essentially parallel to each other in a certain area. This area borders the spring arc. In a preferred embodiment, the clamping leg rests against the busbar with a clamping edge under preload. Advantageously, in the closed position, a free end of the clamping leg has its clamping edge facing the contact leg.

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

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

[0017] In a particularly advantageous embodiment, the first bearing disk is axially supported on a wall of the spring terminal. In a further advantageous embodiment, the second bearing disk is axially supported on a wall of the spring terminal. For axial support, a plain bearing is provided, for example.

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

[0019] In an advantageous embodiment, the second counter bearing 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 mounting leg are arranged at an obtuse angle to the formation of the first bearing shell.

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

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

[0023] In a preferred embodiment, one leg of the clamping spring has an opening for guiding the electrical conductor to the clamping point. This opening extends at least the height and width of the conductor, which has a diameter suitable for the spring terminal. Advantageously, the opening extends into the spring arc. This allows, for example, the integration of additional functions into the spring terminal, such as the insertion of a push button through the opening.

[0024] In a preferred embodiment, the contact leg of the clamping spring has a first rib and a second rib. Advantageously, the first rib and the second rib define the opening in the contact leg.

[0025] In a further advantageous embodiment, the opening is closed by surrounding it on all sides with material from the clamping spring. For example, the opening in the clamping spring is created by punching.

[0026] In a further advantageous embodiment, the first web forms a support for the first bearing disk of the lever. The first web is thus part of the first counter-bearing and forms part of the first bearing shell. In a further advantageous embodiment, the second web forms a support for a second bearing disk of the lever. The second web is thus part of the second counter-bearing and forms part of the second bearing shell.

[0027] In a preferred embodiment, the housing comprises a first guide wall and / or a second guide wall of a conductor guide channel. The conductor guide channel directs the electrical conductor to the terminal. The electrical conductor is inserted into the conductor guide channel from the outside through a conductor opening. Advantageously, the first guide wall terminates at the opening in the mounting leg; for example, the first guide wall abuts the first web that defines the opening. Advantageously, the second guide wall also terminates at the opening in the mounting leg; for example, the second guide wall abuts the second web that defines the opening. It is also possible for the first guide wall and / or the second guide wall to extend through the opening in the mounting leg. In a preferred embodiment, the housing comprises a base body and a cover.Advantageously, the first guide wall and / or the second guide wall is formed in the lid of the housing.

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

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

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

[0031] In an advantageous further development, the driver is positioned closer to the attachment 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] Another inventive aspect is a spring terminal for connecting an electrical conductor, with a busbar, a clamping spring, a housing, and a lever.

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

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

[0036] The lever is designed to move the clamping arm 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 in one piece, 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 against the busbar on one side opposite the clamping point.

[0040] In an advantageous embodiment, the busbar comprises a contact section with a clamping 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 links the contact section to the first fork prong. Advantageously, the contact section, the connecting section, and the first fork prong are formed in one piece from a single metal part.

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

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

[0043] In an advantageous embodiment, the clamping spring is mounted on the connecting section. Preferably, the clamping spring has a first bearing element for support on a side of the connecting section facing the clamping point and / or a second bearing element for support 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 integrally formed from the contact leg. Advantageously, the first bearing element and / or the second bearing element is formed by a tab extending 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 a preferred embodiment, the lever is pivotable for actuation. In a preferred embodiment, the lever is predominantly translationally movable. Advantageously, the first and / or second counter bearing is designed for the translational movement of the lever. For example, if the user presses on the actuating section, the lever slides in a predominantly translational movement, moving the clamping arm into the open position. In a preferred embodiment, the first and / or second counter bearing is also designed for pivoting the lever, so that actuation of the lever in a predominantly rotational movement moves the clamping arm into the open position.For example, the first counter bearing and / or the second counter bearing allow translational and rotational movement of the lever, so that the clamping arm can be actuated from the closed position to the open position by rotational pivoting of the actuating handle and / or by translational pushing of the actuating handle.

[0045] In a preferred embodiment, the drive element is designed as a strut. Advantageously, the strut is arranged between the first bearing disk and the second bearing disk. Advantageously, the strut connects the first bearing disk to the second bearing disk. For example, the strut between the first and second bearing disks has a uniform cross-sectional shape. Advantageously, the strut is formed in one piece. Alternatively, the strut can consist of two parts, with a first part of the strut attached to the first bearing disk and a second part of the strut attached to the second bearing disk.

[0046] In a further advantageous embodiment, the drive element, the first bearing disc, and the second bearing disc are molded as a single piece. For example, the first bearing disc, the second bearing disc, and the drive element are molded as a single piece from a plastic part using injection molding. Advantageously, the entire lever is molded as a single piece.

[0047] In an advantageous embodiment, the driver is arranged at least partially within the circular shape of the first bearing disk. This circular shape is formed by a semicircular outer contour of the first bearing disk. Outside this semicircular outer contour, the shape of the first bearing disk may deviate from a perfect circle. Advantageously, the driver is also arranged at least partially within the circular shape of the second bearing disk. This circular shape is again formed by a semicircular outer contour of the second bearing disk. Outside this semicircular outer contour, the shape of the second bearing disk may deviate from a perfect circle. For example, the first outer contour and / or the second outer contour may be partially shaped as an eccentric or oval.

[0048] In an advantageous embodiment, the first semicircular outer contour of the first bearing disk and / or the second semicircular outer contour of the second bearing disk define an axis of rotation for 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 a counter-rotating motion. Preferably, the driver is arranged outside the space between the busbar and a parallel plane through the axis of rotation in both the open and closed positions. Thus, the driver is advantageously located outside the conductor guide channel in both the open and closed positions. An inserted conductor does not collide with the driver. The driver does not have a guiding function for the conductor.

[0049] In an advantageous embodiment, the first semicircular outer contour of the first bearing disk and / or the second semicircular outer contour of the second bearing disk define an axis of rotation of the lever when the lever is pivoted from the closed position to the open position. In an advantageous embodiment, 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 arm to the axis of rotation changes. Advantageously, the distance to the axis of rotation 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 a further advantageous embodiment, the driver extends predominantly parallel to the axis of rotation. For example, the driver extends from the first bearing disk to the second bearing disk parallel to the axis of rotation. It is also possible for the driver to be designed in two or more parts, with the parts of the driver extending predominantly parallel to the axis of rotation.

[0051] In a preferred embodiment, the clamping spring has a spring arc and a contact leg. The clamping leg is connected to the contact leg via the spring arc. 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 embodiment, 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 another advantageous embodiment, 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 be a wall of the spring terminal that electrically insulates the electrical contact insert consisting of the busbar and clamping spring from the outside. Similarly, an outer wall is also understood to be a wall that electrically insulates two adjacent contact inserts from each other. Each contact insert belongs to a spring terminal, and the housings of two spring terminals can be formed in one piece.It is possible that the same wall may serve as the outer wall of two adjacent spring terminals.

[0053] In an advantageous embodiment, the first bearing shell comprises the first section of the busbar, the first section of the mounting leg, and a first section of the housing. The first bearing shell is thus formed by three distinct parts. In another advantageous embodiment, the second bearing shell comprises the second section of the busbar, the second section of the mounting leg, and a second section of the housing. The second bearing shell is also formed by three distinct parts. This allows the functions of guidance and force application to be separated, resulting in a compact spring-loaded terminal block.

[0054] In a preferred embodiment, the housing comprises a receiving part with an interior space for receiving at least the busbar and a cover. The cover closes an opening in the receiving part facing the interior. The design of the housing as a receiving part and cover allows for a compact form of the spring terminal. In a preferred embodiment, the cover includes at least one conductor guide channel with guide walls for guiding the electrical conductor to the terminal.

[0055] In an advantageous embodiment, a conductor guide channel for receiving the electrical conductor in the area of ​​the first and second bearing discs is formed, at least partially, by a space between the first and second bearing discs. Additionally, this space can be limited by the busbar in the base area. Advantageously, a first housing guide wall of the conductor guide channel and a first inner surface of the first bearing disc 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 surface of the second bearing disc facing the electrical conductor are aligned, at least in the conductor insertion direction. The surfaces align within the manufacturing tolerances if a maximum edge remains between them that does not impede the insertion of the conductor in the conductor insertion direction. For example, the first or second bearing disc may not be flush with the first.second inner side of the first or second bearing disc opposite the first or second housing guide wall.

[0056] In a preferred embodiment, the first web of the mounting leg connects directly to the first guide wall in the conductor insertion direction. Advantageously, the first bearing disc connects directly to the first web in the conductor insertion direction. In a preferred embodiment, the second web of the mounting leg connects directly to the second guide wall in the conductor insertion direction. Advantageously, the second bearing disc connects directly to the second web in the conductor insertion direction. Gaps between the guide wall and the web, as well as between the web and the bearing disc, are thus reduced. The risk of an individual wire of a strand becoming caught in the remaining gaps is reduced.

[0057] Another aspect is a spring-loaded terminal block for connecting an electrical conductor to a busbar, comprising a clamping spring, a housing, and a lever. The lever has a first bearing disk with a first outer contour for mounting 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 forms a clamping point with the busbar for clamping the electrical conductor to the busbar. The lever has a driver that engages when the lever pivots to move the clamping leg from a closed to an open position. The first counter bearing is designed to absorb the force of the clamping spring. The lever has a first pin projecting axially from the first bearing disk, which is located 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 embodiment, the first counter bearing comprises a first section of the busbar and / or a first section of the clamping spring for absorbing the force of the clamping spring.

[0058] Features of the invention are explained in more detail below with reference to exemplary embodiments illustrated in the figures. It is possible to combine features of different exemplary embodiments. The figures show: Fig. 1 an embodiment with a spring terminal block in sectional view; Fig. 2 the exemplary embodiment from Fig. 1 in open position; Fig. 3a and Fig. 3b Sectional views of an exemplary embodiment of a spring terminal block; Fig. 4 an embodiment of a contact insert of a spring terminal block; Fig. 5 an embodiment of a busbar of a spring terminal; Fig. 6 an embodiment of a clamping spring of a spring terminal block with relaxed clamping leg; Fig. 7 an embodiment of a clamping spring of a spring terminal clamp with deflected clamping leg; Fig. 8 an embodiment with a spring terminal block in sectional view; Fig. 9 an embodiment with a spring terminal block in side view; Fig. 9a an embodiment with a spring terminal block in partial sectional view; Fig. 9b an embodiment with a spring terminal block in sectional view; Fig. 10 an embodiment with a spring terminal block in three-dimensional view; Fig. 11 Exemplary embodiments with parts of spring terminal blocks in three-dimensional view; Fig. 12a and Fig. 12b an embodiment with a spring terminal block in sectional views.

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

[0060] Due to the cross-sectional view approximately through the center of a conductor guide channel LF, the lever 400 is partially obscured by the housing 300. The lever 400 has a first bearing disk 410 with a first semicircular outer contour 411 for mounting the lever 400 in a first counter bearing 510. The actuating handle 490 is connected to the first bearing disk 410 via a web 415 (partially obscured). The first bearing disk 410 in the exemplary embodiment of the Fig. 1 has the semicircular outer contour 411, with which the first bearing disk 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 protrusion 134 to increase the surface pressure and minimize the electrical contact resistance. The lever 400 has a driver 430 which, when the lever 400 is pivoted to move the clamping leg 210 from a closed position GS to an open position OS, is designed to Fig. Figure 1 shows lever 400 and clamping arm 210 in the closed position GS. However, in Fig. 2 the lever 400 and the clamping leg 210 are shown in the open position OS.

[0062] Accordingly, by actuating lever 400, the clamping arm can be moved from the open position OS to the closed position GS. If an electrical conductor 2 is previously inserted, the clamping arm 210, moving from the open position OS, encounters the conductor 2 and clamps it against the busbar 100. If lever 400 is then moved further towards the closed position GS, the driver 430 loses contact with the clamping arm 210, and the clamping force F is released. Feder It then fully engages conductor 2. Advantageously, components 410, 415, 430, 490 of lever 400 are molded in one piece from plastic.

[0063] The first bearing disk 410 is radially supported in the counter bearing 510. The counter bearing 510 is formed by 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 introduced into the bearing disk 410 via the driver 430 toFeder Part of the current is transferred to the busbar 100 and part to the clamping spring 200. In the exemplary embodiment of the Fig. 1 and Fig. 2 The outer contour 411 of the first bearing disc 410 slides on a base section 130 of the busbar 100. Alternatively, or as in the Fig. 1 and Fig. 2 shown in combination, the outer contour 411 slides on a busbar wall section 110 with a semicircular inner contour 111. Advantageously, the geometry of the semicircular inner contour 111 of the busbar wall section 110 is adapted to the outer contour 411 of the first bearing disc 410.

[0064] In the exemplary embodiment of the Fig. Figure 1: The clamping spring 200 has a clamping leg 210 and a contact leg 220, and a spring arc 230 connecting the clamping leg 210 and the contact leg 220. In the exemplary embodiment of the Fig. 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 against the side of the busbar 100 opposite the clamping point K. Fig. Figure 2 also shows that a projection 255 of the mounting leg 220 of the clamping spring 200 extends into an opening in the busbar to form a fastening point. At the same time, the projection 255 of the mounting 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 that faces the clamping point K. The conductor 2 is guided to the clamping point K through the opening 229. The opening 229 is bounded by the web 221 of the contact leg 220, as shown, and 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 part of the first counter bearing 510. A housing wall 331 laterally bounds the conductor guide channel LF, so that a conductor 2, which is inserted into the conductor terminal 1 from the insertion side ES, is guided laterally by the housing wall 331, the web 221 of the contact leg 220, and the inner surface 412 of the bearing disk 410, which are arranged one behind the other in the conductor insertion direction ER. Advantageously, the housing wall 331, the bridge 221 and the 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, the bridge 221, and the inner side 412 are aligned in the conductor insertion direction ER.

[0066] The spring terminal 1 is in the exemplary embodiment of the Fig. 1 is 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 inserted through the conductor guide channel LF up to the clamping arm 210, and the feed force deflects the clamping arm 210 against the spring force F. Feder out of.

[0067] In the exemplary embodiment of the Fig. Figure 1 shows 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 exact mathematical parallelism to the contact leg 220 by less than 15°. This allows for a high clamping force from the clamping spring 200 and, at the same time, a compact design.

[0068] In the exemplary embodiment of the Fig. In Figure 1, the housing 300 comprises a first housing part 340 and a second housing part 360, which are to be attached 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 housed in the interior space 345. The second housing part 360 forms a cover 360. The cover 360 of the housing 300 is received in the interior space 345, with the cover 360 closing the interior space 345. In the exemplary embodiment of the Fig. 1 The cover 360 has the wall 331 of the conductor guide duct LF. The cover 360 is fastened 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 exemplary embodiment of the Fig. 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 by 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 exemplary embodiment of the Fig. 1 The housing web 380 has a fastening element 348 for attachment 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 exemplary embodiment of the Fig. In the second embodiment, the housing web 380 has a fastening element 343 for attachment to the cover 360. The fastening element 343 of the housing web 380 is designed as a locking hook 343. The cover 360 has an undercut 366 that fits the locking hook 343. In both embodiments, the fastening elements 361, 362 are designed as locking elements or associated edges. In both cases, the housing web 380 extends through the gap 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 gap between the first web 415 and the second web 425. This design offers several advantages. It allows for 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 leverage. At the same time, the spring 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 exemplary embodiment of the Fig. Figure 2 shows 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. This 1.3 mm distance provides sufficient clearance and creepage distances.

[0073] In the exemplary embodiment, the busbar 100 has Fig. 1 In addition to the base section 130, which acts as a contact section, a fork contact 160 with a first fork tine 163 and a second fork tine 164 is provided. The first fork tine 163 and the second fork tine 164 are fixedly connected to each other by a connecting wall 165. Advantageously, the base section 130, the first and second fork tines 163, 164, and the connecting wall 165 are formed in one piece from a single piece of metal – for example, by stamping and bending. The fork contact 160 is arranged in a plug-in face 370 of the housing 300. The plug-in face 370 has an opening 371 leading to the fork contact 160 for a contact blade (not shown). As an alternative to the exemplary embodiment of the Fig. 1 The spring terminal 1 can have a contact blade (not shown) which is integrally formed with the bottom section 130 of the busbar 100.

[0074] In Fig. Figure 2 shows lever 400 and clamping arm 210 in the open position OS in a sectional view. The clamping arm 210 is deflected in the open position OS. The spring force F Feder The action acts on the driver and is directed approximately through the pivot point D. The pivot point D is defined by the semicircular outer contour 411 of the first bearing disk 410. In the exemplary embodiment, this results in the Fig. 2 of the levers 400 are held in an over-center position.

[0075] In the exemplary embodiments of the Fig. 1 and Fig. 2 of the spring-loaded terminal 1 defines the first semicircular outer contour 411 of the first bearing disk 410 as 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 convex surface 435, such that when the lever 400 pivots, the distance d of the area of ​​the surface 435 in contact with the clamping arm 210 to the rotation axis D changes. This distance d is greater in the open position OS than in the closed position GS.

[0076] In Fig. 2. In the open position OS, the driver 430 is positioned closer to the free end of the clamping leg 210 than in the closed position GS. Fig. 1. Accordingly, as the clamping leg 210 of the clamping spring 200 deflects, the spring force F decreases. FederAt the same time, the lever arm length between the contact area of ​​the driver 430 with the clamping leg 210 and the spring arc 230 also increases. These two effects partially compensate for each other, so that the user experiences a smaller increase in lever actuation force at the operating handle 490 when 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 relative to an incline of the busbar, so that a conductor 2 is guided into the conductor collection pocket AT formed by the busbar 100 and the tab 255, first by the clamping leg 210 and then immediately through the busbar 100. Simultaneously, the conductor 2 is also guided in the insertion direction ER on the opposite side at the bottom through the bottom section 130 of the busbar 100 and also laterally. This guidance allows multi-stranded conductors or stranded wires with many individual conductors to be connected using the spring terminal 1.

[0078] Not shown in the Fig. 1 and Fig. Figure 2 is an embodiment in which the lever 400 has two bearing discs. This reduces bearing forces and also reduces tilting of the lever 400. In the embodiment shown, a lever 400 with a first bearing disc 410 and a second bearing disc 420 is... Fig. 3a and Fig. 3b is shown in horizontal section. Fig. 3a move the lever to the closed position GS and Fig. 3b The lever 400 is 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 each other by the driver 430. This increases the stability of the lever 400, especially for a smaller lever 400. Alternatively, the driver 430 is designed in two parts. In this case, the driver 430 is, for example, partially formed on the first bearing disc 410 and partially on the second bearing disc 420. Advantageously, the first bearing disc 410, the second bearing disc 420, and the driver 430 are formed in one piece from a single material. Advantageously, the bearing discs 410 and 420 are made of plastic. Alternatively, it is possible to design the driver as a separate element, for example, as a cotter pin or mandrel.For example, the drive element is made of a metal.

[0079] In Fig. Figure 3b shows that the first bearing disc 410 is connected to a first web 415 and the second bearing disc 420 to a second web 425. Both webs 415 and 425 are connected to the operating handle (not visible in the section), so that the lever 400 forms a U-shape with the bearing discs 410 and 420 at its free ends. The first bearing disc 410 is supported in a first counter bearing 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 supported in a second counter bearing 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 surface 412 of the first bearing disk 410 and a second inner surface 422 of the second bearing disk 420. This space R is in the closed position GS, as shown in Fig. 3a shown, limited by the clamping leg 210. In open position OS according to Fig. 3b, space R continues to be laterally bounded by webs 415, 425. The ladder 2, inserted in the open position OS, passes over the bulge 134 and can be securely clamped to it. Alternatively, a bulge can be formed at a different location, or a grooved floor section or a plurality of bulges are possible (not shown).

[0081] The first bearing disk 410 is axially supported by a first housing wall 341. The second bearing disk 420 is axially supported by a second housing wall 342. The first bearing disk 410 is radially supported in the first counter-bearing by means of the first semicircular outer contour 411, the first counter-bearing being designed to absorb the force of the clamping spring 200. The lever 400 has a first pin 451 projecting axially from the first bearing disk 410. The first pin 451 is arranged in a first receptacle 351 of the housing 300. The lever 400 is positioned 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, on the other hand, the driver 430 is in contact with the clamping leg 210, the force of the clamping spring 200 is transferred via the driver 430 and the first bearing disc 410 to the first counter bearing.The receptacle 351, for example, has a small 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 is not loosely movable within the housing 300 when out of contact with the clamping spring 200, but is held in position by the pin 451 and the receptacle 351. These two coordinated bearings of the first bearing disk 410 effectively prevent any wobble of the lever 400 when out of contact with the clamping spring 200, while simultaneously ensuring good bearing stability even under high spring force, and allowing the clamping spring 200 to be of a simple design.

[0082] While a first pin 451 on the first bearing disk 410 is sufficient for positioning, so that a second pin on the second bearing disk 420 is not required, if both bearing disks 410, 420 are designed with pins 451, 452, the risk of the lever 400 tilting can be further reduced. In this case, the lever 400 has a second pin 452 projecting axially from the second bearing disk 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 arm 210 of the clamping spring 200. If, on the other hand, the driver 430 is in contact with the clamping leg 210, the force of the clamping spring 200 is transferred via the driver 430 and the second bearing disc 420 to the second counter bearing.The receptacle 352, for example, has minimal play so that the force of the clamping spring 200 does not act predominantly, or ideally not at all, on the pin 452 and receptacle 352. The pin 452 and receptacle 352 ensure that the lever 400 is not loosely movable within the housing 300 when out of contact with the clamping spring 200, but is held in position by the pin 452 and receptacle 352. These two coordinated bearings of the second bearing disc 420 effectively prevent the lever 400 from moving freely when out of contact with the clamping spring 200. At the same time, the second counter bearing ensures good support even under high spring force in contact with the clamping spring 200, and the clamping spring 200 can still be of a simple design.

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

[0084] In Fig. Figure 4 shows a contact insert of an exemplary embodiment of a spring-loaded terminal block 1 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-loaded terminal block 1 are shown. A lever for moving the clamping leg 210 is shown in the exemplary embodiment. Fig. 4 not shown. A housing for receiving the contact insert can, if necessary, be provided in the exemplary embodiment of the Fig. 4 will be added.

[0085] The clamping spring 200 has a spring arc 230, a contact leg 220, and the clamping leg 210. Advantageously, the clamping spring 200 is 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 arc 230. In the exemplary embodiment of the Fig. 4 The clamping spring 200 has exactly one clamping leg 210 for an electrical conductor (not shown). Furthermore, the contact insert of the exemplary embodiment has in Fig. 4 a fork contact 160. The contact leg 220 of the clamping spring 200 forms a fork tine 262 of the fork contact 160.

[0086] The contact insert of the exemplary embodiment in Fig. Figure 4 also includes the busbar 100. The busbar 100 is advantageously made of metal, for example galvanized copper, which is optimized for electrical conductivity under defined environmental conditions. Alternatively, the busbar 100 is made of a copper alloy or another metal. Advantageously, the busbar 100 is finished, in particular silver-plated or gold-plated. The busbar 100 has a base section 130, which can also be referred to as the contact section 130. In the exemplary embodiment of the Fig. 4. A protrusion 134 is located 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 prong 163 of the fork contact 160. Accordingly, the busbar 100 has the first fork prong 163 of a fork contact 160. The clamping spring 200, on the other hand, has the second fork prong 262 of the fork contact 160. The second fork prong 262 of the clamping spring 200 rests against the first fork prong 163 of the fork contact 160 under preload.

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

[0088] In the exemplary embodiment of the Fig. Figure 4 shows a spring-loaded terminal 1 with a first counter bearing 510 for a first bearing disk (not shown) and / or a second counter bearing 520 for a second bearing disk (not shown). It is possible to have only the first counter bearing 510 or only the second counter bearing 520; however, having both counter bearings 510 and 520 is particularly advantageous for secure support.

[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 bearing. Alternatively, the surface is curved (not shown) according to the first bearing disk to increase the bearing area. A separate 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 disk is also supported on the curvature 134.

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

[0091] In the exemplary embodiment of the Fig. 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 disk 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 the 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 from at least 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 bearing. Alternatively, the surface is curved (not shown) according to the second bearing disk to increase the bearing area. A separate 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 disk is also supported on the curvature 134.Advantageously, the main extension directions of the first section 131 and the second section 132 of the conductor rail 100 are essentially parallel to each other.

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

[0094] In the exemplary embodiment of the Fig. 4 The 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 disk 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 the width of the second section 132 of the busbar 100.

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

[0096] In the exemplary embodiment of the spring terminal block 1 in Fig. 4 The mounting leg 220 of the clamping spring 200 has an opening 229 for supplying the electrical conductor through the opening 229 to the clamping point K. In Fig. Figure 4 shows that the webs 221, 222 limit the opening 229. In the exemplary embodiment of the spring terminal 1 in Fig. 4 The opening 229 extends into the spring arch 230. Also in the exemplary embodiment of the spring terminal 1 in Fig. 4 The opening 229 extends to 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. The actuating element could be, for example, a push button, plunger, or lever of the spring-loaded terminal 1. The opening 229 also allows actuation by an external actuating tool (also not shown). Alternatively, it is possible for the opening 229 to pass through a web of an insulating housing (also not shown) to achieve greater stability.

[0097] In the exemplary embodiment of the spring terminal block 1 in Fig. 4. The clamping spring 200 is mounted on the busbar 100. This mounting allows the busbar 100 and clamping spring 200 to be pre-assembled and suitable for bulk material handling. The contact leg 220 of the clamping spring 200 extends along the side of the bottom section 130 of the busbar 100 opposite contact point K and rests against the bottom section 130 of the busbar 100 on the side opposite contact point K. At contact point K, the clamping leg 210 rests against the bottom section 130 of the busbar 100 with preload, so that the bottom section 130 is held between the clamping leg 210 and the contact leg 220.

[0098] In the exemplary embodiment of the spring terminal block 1 in Fig. 4. The clamping spring 200 is mounted on the connecting section 170. Advantageously, the clamping spring 200 is mounted on both sides of the connecting section 170. This mounting on both sides reliably prevents the busbar 100 from being displaced relative to the clamping spring 200 in its main direction of extension, particularly in the conductor insertion direction ER or against the conductor insertion direction ER. Advantageously, the clamping spring 200 has a first bearing element 251 for support on one side of the connecting section 170 facing the clamping point K and / or a second bearing element 252 for support on one 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 Fig. Figure 5 shows an embodiment with a busbar 100 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 engage behind an edge of the housing or that penetrate into the plastic of the housing. The busbar 100 has a recess 171 in the area of ​​the connection section 170, into which an element of the clamping spring 200 (for example, the bearing element 251 in) is inserted. Fig. 4 or Fig. 6) engages, so that busbar 100 and clamping spring 200 are positively connected. In the conductor insertion direction ER, a conductor (not shown) first encounters a slope 139 of the busbar 100, so that the conductor does not encounter any edge in the insertion direction ER where the conductor or individual wires of the conductor could become entangled. The slope 139 is formed by cutting and reshaping a short tab 139, which is bent into the opening 229. The tab 139 provides additional support for the busbar 100 relative to the contact leg 220 of the clamping spring 200, so that the busbar 100 cannot be moved relative to the contact leg 220 perpendicular to the conductor insertion direction ER in the area of ​​the tab 139. The busbar 100 locks into the opening 229 with the tab 139 and forms a rotation protection, so that the contact insert consisting of busbar 100 and clamping spring 200 can be pre-assembled in bulk.

[0100] In Fig. Figure 6 shows an embodiment of a clamping spring 200 of a spring terminal block with a relaxed clamping leg 210 in a three-dimensional view. Fig. Figure 6 shows that the opening 229 extends into the horizontal section of the mounting 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 Fig. 5. First, the clamping leg 210 would have to be deflected, as shown in Fig. Figure 7 shows that the busbar 100 would then be pushed laterally onto the mounting leg 220 of the clamping spring 200. In this process, a protrusion 256 of the mounting leg 220 of the clamping spring 200 and the protrusion 171 of the busbar 100 would interlock. Fig. 5. If the clamping leg 210 is then released, the clamping leg 210 presses on the bottom section 130 of the busbar 100, as shown in Fig. 4 is shown. In the exemplary embodiment of the Fig. Figure 6 shows that the bearing element 251 is punched out of the mounting leg 220 and bent out, creating the further opening 254 in the mounting leg 220.

[0101] In the exemplary embodiment of the Fig. 7 The fork tine 262 of the clamping spring 200 is narrowed in the contact area 268 by a recess 269 to about half its 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 recess 269.

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

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

[0104] The lever 400 has a first bearing disk 410 with a first semicircular outer contour 411 for mounting the lever 400 in a first counter bearing 510. The first bearing disk 410, the first semicircular outer contour 411, and the first counter bearing 510 are in Fig. Figure 8 shows that the lever 400 has a second bearing disk 420 with a second semicircular outer contour 421 for mounting the lever 400 in a second counter bearing 520. The second bearing disk 420, the second semicircular outer contour 421, and the second counter bearing 520 are shown in Fig. 9 shown. The exemplary embodiments of the Fig. 8 and Fig. The 9 components are different, but can be combined with each other. The second bearing disc 420 is spaced apart from the first bearing disc 410. A portion of the clamping leg 210 of the clamping spring 200 is arranged between the first bearing disc 410 and the second bearing disc 420, which is Fig. 8 is shown in the cross-section.

[0105] The lever 400 has an actuating handle 490, which in the exemplary embodiment of the Fig. 8 with the first bearing disc 410 over the first web 415 and in the exemplary embodiment of the Fig. 9 is connected to the second bearing disc 420 via the second web 425. The clamping spring 200 has the clamping leg 210, a spring arc 230, and a contact leg 220. The clamping leg 210 forms a clamping point K with the busbar 100 for clamping the electrical conductor to the busbar 100. The lever 400 has a driver 430 which, when the lever 400 is pivoted to move the clamping leg 210 from a closed position GS to an open position. In the exemplary embodiments of the Fig. 8 and Fig. Figure 9 shows the closed position GS. Advantageously, the lever 400 can also be used to adjust the device 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. Clamping leg 210 and contact leg 220 are predominantly parallel when they deviate from mathematical parallelism by less than 15°, and in particular less than 10°. This allows for a compact arrangement of lever 400, spring clamp 200, and busbar 100. In the Fig. In the embodiment shown in Figure 8, the clamping leg 210 rests against a base area 130 of the busbar 100 with a preload. This makes it possible to securely clamp conductors with a small cross-section.

[0106] In the exemplary embodiment of the Fig. 8 The first counter bearing 510 has a first bearing shell 510, which is formed at least from 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 which - as in Fig. Figure 8 shows the first bearing disc 410. The first bearing disc 410 makes at least line contact with the first section 131 of the busbar 100. A concavity in the first section 131 of the busbar 100 can increase the bearing surface in this section (not shown). The first bearing disc 410 makes at least line contact with the first section 221 of the mounting leg 220. A concavity in the first section 221 of the mounting leg 220 can increase the bearing surface in this section (not shown).

[0107] In the exemplary embodiment of the Fig. 9 The 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 which - as in Fig. Figure 9 shows the second bearing disc 420. The second bearing disc 420 makes at least line contact with the second section 132 of the busbar 100. A concavity in the second section 132 of the busbar 100 can increase the bearing surface in the second section 132 (not shown). The second bearing disc 420 makes at least line contact with the second section 222 of the mounting leg 220. A concavity in the second section 222 of the mounting leg 220 can increase the bearing surface in the second section 222 (not shown).

[0108] In the exemplary embodiments of the Fig. 8 and Fig. Figure 9 shows a combinable independent inventive aspect. The lever 400 has a driver 430 which, when the lever 400 is pivoted to move the clamping arm 210 from a closed position GS to an open position, is configured as such. The driver 430 is shown in the exemplary embodiments of Fig. 8 and Fig. 9 is designed as a strut 430, which is arranged between the first bearing disk 410 and the second bearing disk 420. The strut 430 connects the first bearing disk 410 to the second bearing disk 420. This effectively reduces any potential tilting of the bearing disks 410 and 420 when the spring force from the clamping arm 210 acts on the bearing disks 410 and 420 via the driver 430. In this case, the bearing disks 410 and 420 can, for example, be made thinner, resulting in a compact spring-loaded terminal clamp 1.

[0109] In the exemplary embodiments of the Fig. 8 and Fig. In section 9, the driver 430, the first bearing disc 410, and the second bearing disc 420 are molded in one piece from a plastic material. For example, the entire lever 400 is molded in one piece from a plastic material. The driver 430 is shaped such that it extends predominantly parallel to a rotational axis D. The rotational axis D is defined by the first semicircular outer contour 411 of the first bearing disc 410 and by the second semicircular outer contour 421 of the second bearing disc 420. The respective semicircular outer contours 411 and 421 define a circular shape KF whose center is the rotational axis D.

[0110] In the exemplary embodiment of the Fig. Figure 8 shows that the driver 430 is arranged at least partially within the circular shape KF of the second bearing disk 420. In the exemplary embodiment of Fig. Figure 8 shows that the driver 430 is arranged at least partially within the circular shape KF of the first bearing disk 410. In the exemplary embodiment of Fig. 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, are also possible. In the exemplary embodiment of the Fig. 8 The driver 430 extends predominantly parallel to the axis of rotation D. The driver 430 is arranged between the contact leg 220 and the clamping leg 210. In the exemplary embodiments of Fig. 8 and Fig. In section 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 for a compact arrangement of the spring terminal 1.

[0111] In the embodiment of the spring terminal 1 according to Fig. In the housing 300, a receiving part 340 with an interior 341 for receiving the busbar 100 and the clamping spring 200 is included. A cover 360 is received in the interior 341. The cover 360 closes an opening in the receiving part 340 that faces the interior 341. In the exemplary embodiment of the Fig. 8 in the lid 360 a part of the conductor guidance channel LF with the guide wall 331 is formed.

[0112] In Fig. 9a and Fig. Figure 9b shows an embodiment with two spring-loaded terminal blocks 1 in a partial sectional view. The spring-loaded terminal block 1 has a busbar 100, a clamping spring 200, a housing 300, and a lever 400. The busbar 100, the clamping spring 200, and the lever 400 are at least partially enclosed in the housing 300. The lever 400 is mounted within the housing 300 and is designed to actuate a clamping arm 210 of the clamping spring 200.

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

[0114] The first housing part 340 has a housing web 380 which is located in the Fig. 9a and Fig. Figure 9b is shown only in section. An example of the geometric shape of the housing web 380 in its main extension direction is shown in Fig. 2 shown. The exemplary embodiment of the Fig. 2 can be illustrated with the exemplary embodiment of the Fig. 9a and Fig. 9b can be combined for the design of the spring terminal block 1. As in the exemplary embodiment of the Fig. 2 and the embodiment of the Fig. 9a and Fig. 9b the housing web 380 has a fastening element 343 for attachment to the second housing part 360. In Fig. 9a the fastening element 343 can be identified as a locking hook 343, which, as in the left illustration of the Fig. 9a shows, reaching behind an undercut 366 of the cover 360.

[0115] The lever 400 has an actuating handle 490 and a first web 415 and a second web 425. The actuating handle 490 is connected to the first web 415 and to the second web 425. A gap is formed between the first web 415 and the second web 425. As in Fig. Figure 9b shows that 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 forms a clamping point with the busbar 100 for clamping the electrical conductor to the busbar 100.

[0116] As in Fig. 9a and the Fig. Figure 10 shows that in a closed position GS, the first web 415 of the lever 400, the second web 425 of the lever 400, the housing web 380, and the 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 exemplary embodiment of the Fig. 9a and in the exemplary embodiment of the Fig. 10 The housing web 380 has a recess for receiving the operating handle 490 in the closed position.

[0117] In the exemplary embodiment of the Fig. 9b and in the exemplary embodiment of the Fig. Figure 10 shows 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, when the lever 400 is actuated, the lever 400 can be pivoted, whereby during the pivoting movement the first web 415 and / or the second web 425 slides on the housing web 380.

[0118] In Fig. Figure 10 is an embodiment of a spring-loaded terminal block 1 for connecting an electrical conductor 2. The spring-loaded terminal block 1 has a housing 300 which is located in the Fig. Figure 10 shows elements of the spring terminal 1 arranged in the housing 300, in a partially transparent manner. The housing can be made of a transparent or non-transparent material. A busbar 100, a clamping spring 200, and partially a lever 400 are accommodated in the housing 300. The busbar 100 is inserted into a groove 356 of the housing 300 for fastening by means of an edge of a base section 130. The base section 130 has a fastening element 136 that secures the busbar 100 relative to the housing 300 in the groove 356. For example, the fastening element 136 is designed as a projecting tab 136, the edge of which faces the wall of the groove 356.

[0119] The lever 400 has a first bearing disk 410 with a first outer contour 411 for mounting the lever 400 in a first counter bearing. The lever 400 has an actuating handle 490, which is connected to the first bearing disk 410 via a web 415. The clamping spring 200 has a clamping leg 210. The clamping leg 210 forms a clamping point with the busbar 100 for clamping the electrical conductor 2 to the busbar 100. In the exemplary embodiment of the Fig. At position 10, the electrical conductor 2 is already clamped in the spring terminal 1. The clamping arm 210 of the clamping spring 200 is deflected and presses the conductor 2 against the busbar 100. A clamping edge 211 of the clamping arm 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, when the lever 400 is pivoted to move the clamping arm 210 from a closed position to an open position. In the exemplary embodiment of the Fig. Figure 10 shows the state in which the lever 400 is in the closed position. At the same time, however, the electrical conductor 2 is plugged in and the clamping arm 210 of the clamping spring 200 is deflected, so that the clamping arm 210 is not in contact with the driver.

[0121] The first bearing disk 410 rests against the first counter bearing, the first counter bearing being designed to absorb the force of the clamping spring 200. The first counter bearing in the exemplary embodiment of Fig. 10 has both a first section 221 of a mounting leg 220 and a first section 131 of the busbar 100. The mounting leg 220 has an angle 225, such that the mounting leg 220 is in contact with the first bearing disc 410 and extends through an obtuse angle of the angle 225 to below the busbar 100, i.e., rests against the busbar 100 on the side opposite the contact point.

[0122] The force of the clamping spring 200 acts on the first counter bearing via the clamping leg 210, the driver 430, and the first bearing washer 410 only when the clamping leg 210 is in contact with the driver 430. For this to occur, in Fig. 10. First, lever 400 must be pivoted into the open position.

[0123] The lever 400 has a first pin 450 projecting axially from the first bearing disk 410, which is arranged in a receptacle 350 of the housing 300. The pin 450 and receptacle 350 position the lever 400 when the driver 430 – as in Fig. 10 shown - is not in contact with the clamping leg 210 of the clamping spring 200. In the exemplary embodiment of the Fig. The pin 450 is circular, with the receptacle 350 in the housing 300 being semicircular. The radius r Z The diameter of the circular cone 450 is significantly smaller than the radius r. L the first bearing disc 410. In the exemplary embodiment of the Fig. 10 is the radius r Z of the circular cone 450 less than half the size of the radius r L the first bearing disc 410. In the exemplary embodiment of the Fig. In 10, the pin 450 and the first bearing disc 410 have the same pivot point D. Alternatively (in Fig. (10 not shown) the pivot points D of pin 450 and first bearing disk 410 are spaced apart from each other. It is also possible that the pin deviates from a circular shape and is, for example, floating.

[0124] In the exemplary embodiment of the Fig. In section 10, the pin 450 is formed on the side of the first bearing disk 410 opposite the driver 430 – facing outwards. Alternatively, it is possible, for example, to form the pin 450 and the receptacle 350 on the same side as the driver 430 – facing inwards.

[0125] Basically, the pin 450 shown is sufficient for the function of positioning the lever 400. In addition to the pin 450, another pin (in Fig. (10 not shown) on a second bearing disk 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 inner contour that is at least partially circular, in which the pin 450 is rotatably mounted. The inner contour of the receptacle 350, which is at least partially circular, 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 force 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 of the Fig. 10 a groove 355 is provided in the housing 300, through which the pin 450 can be pushed into the receptacle 350 with the lever 400 during an assembly step.

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

[0128] In the exemplary embodiment of the Fig. Figure 10 shows that the housing has 300 stops for the lever 400 for the open and closed positions. Fig. Figure 10 shows that the lever 400 strikes the plastic housing 300 in the closed position.

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

[0130] The diagram shows elements of four spring-loaded terminal blocks 10, 20, 30, and 40, with the fourth spring-loaded terminal block 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-loaded terminal blocks 10 and 20 each have a blade contact, the contact blade 166 being formed by the busbar. The third spring-loaded terminal block 30 has a fork contact, with the fork prongs 161 and 162 being part of the busbar. The fork prongs 262 of the clamping springs each have a protrusion 269, so that the clamping springs of the first, second, and fourth spring-loaded terminal blocks 10, 20, and 40 can be manufactured as identical parts. Only the third spring-loaded terminal block 30 has a different clamping spring (not shown).

[0131] The Fig. 12a and Fig. Figure 12b shows an embodiment of a spring-loaded terminal block 1 for connecting an electrical conductor 2. Fig. Figure 12a shows the spring-loaded terminal block 1 with a lever 400 in the open position OS and with a conductor inserted, in a sectional view. Fig. 12b shows the spring terminal 1 with the lever 400 in closed position GS, also in sectional view.

[0132] The spring-loaded terminal block 1 comprises a busbar 100, a clamping spring 200, a housing 300, and a lever 400. The busbar 100, clamping spring 200, and lever 400 are at least partially enclosed 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 disk 410 with a first semicircular outer contour for mounting the lever 400 in a first counter bearing. In the exemplary embodiment, the counter bearing is Fig. 12a and Fig. 12b is formed by a contact leg 220 of the clamping spring 200. Due to the sectional view, it is evident in the Fig. 12a and Fig. It is not apparent from Figure 12b that the lever 400 has a second bearing disk with a second semicircular outer contour for mounting 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 disk is spaced apart from the first bearing disk 410. The clamping spring 200 in the exemplary embodiment of Fig. 12a and Fig. 12b has a clamping leg 210 and a spring arc 230, wherein the support leg 220 is connected to the clamping leg 210 via the spring arc 230. In Fig. Figure 12b shows that the mounting leg 220 has an opening 229 for the conductor 2 to reach the clamping point K. The opening 229 is laterally bounded by webs, as shown in the sectional view of the Fig. Figure 12b shows a bridge 221 in plan view. The mounting leg 220 extends to below the busbar 100 and has a projection 255 for attachment to the busbar 100. The projection 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, with both fork prongs 163, 164 being connected via a connecting section 165 of the busbar 100. Advantageously, both fork prongs 163, 164, the connecting section 165, and the base section 130 are formed from a single piece of metal. The busbar 100 has a protrusion 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, several protrusions or a roughened or grooved surface of the base section 130 can also be provided for conductor contact.

[0135] In the exemplary embodiment of the Fig. 12a and Fig. In Figure 12b, the lever 430 has a driver 430 which, when the lever 400 pivots 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 disk 410 and to the second bearing disk. The clamping leg 210 forms a clamping point K with the busbar 100 for clamping the electrical conductor 2 to the busbar 100. In the exemplary embodiment of the Fig. 12a and Fig. In 12b, the driver 430 is formed on an inner side of the first bearing disk 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 Fig. 12a and Fig. Figure 12b shows that in this embodiment, the driver 430 is arranged closer to the mounting leg 420 in the closed position GS than in the open position OS. The spring terminal 1 of the embodiment Fig. 12a and Fig. This allows 12b to be designed in a particularly compact way.

[0137] The first semicircular 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 rotation axis D is preferably fixed over the pivoting path. However, the outer contour 411 can also define a displacement of the rotation axis D in the direction of an instantaneous center of rotation if the outer contour 411 additionally has a non-semicircular section. Preferably, however, the first bearing disk 410 is only in contact with the counter bearing via the semicircular outer contour 411.

[0138] The driver 430 is in the exemplary embodiment of the Fig. 12a and Fig. 12b is arranged outside a space R between the busbar 100 and a parallel plane E through the axis of rotation D or above the axis of rotation D in the open position OS and in the closed position GS. The space R is advantageously bounded laterally by the first bearing disk 410 and the second bearing disk. In addition, the space R is bounded in the bottom area by the bottom 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 in both the closed position GS and 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 arm 210.

[0139] In the exemplary embodiment of the Fig. 12a and Fig. 12b The housing 300 has a plug-in face 370 for the fork contact 160. The plug-in face 370 has an opening 371 for the insertion of a contact blade (not shown). The housing 300 has a wall 331 to form a conductor guidance channel LF. The conductor guidance channel LF is wider at its beginning, as shown in Fig. Figure 12a shows a portion of the insulation 22 of the conductor 2. The core 21 of the conductor 2 extends beyond the contact point K to ensure good and reliable electrical contact. The insertion depth for the core 21 of the conductor 2 is limited by the extension 255. In the exemplary embodiment of Fig. 12a and Fig. 12b the housing 300 is formed from at least two parts 340, 360 which are attached to each other by means of fastening points 361, 362.

[0140] In the exemplary embodiment of the Fig. In 12a, the lever 400 has an operating handle 490 and a first web 415. Furthermore, the lever 400 may have a second web. Fig. In 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 forming between the first web 415 and the second web. As shown in the Fig. 12a and Fig. As shown in Figure 12b, the clamping leg 210 passes through the space ZR between the first web 415 and the second web of the lever 400.

[0141] The housing 300 comprises 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 that leads to the contact insert consisting of a clamping spring 200 and a busbar 100.

[0142] The first housing part 360 has a housing web 381. The housing web 381 extends in its main direction from the cover 360 to the base body 340. The housing web 381 has a fastening element 361 for attachment to the second housing part 340. The base body 340, as the second housing part, has a fastening point 346 that corresponds to the fastening element 361. In the exemplary embodiment of the Fig. 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 terminal 1 to be designed to be particularly narrow, since the fastening of the housing parts 340, 360 to each other does not cause any additional width.

[0144] In the exemplary embodiment of the Fig. Figure 12a shows 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 for a large adjustment range. At the same time, the actuating section 490 of the lever 400 is located in the closed position GS. Fig. 12b is attached to the housing 300 and the spring terminal 1 is correspondingly compact. To achieve greater stability, further locking mechanisms 362, 347 can be provided between the first housing part 360 and the second housing part 340. Reference symbol list 1, 10, 20, 30, 40 Spring terminal block 2 electrical conductors 21 souls 22 Insulation 100 busbar 110 busbar wall section 111 semicircular inner contour 130 Ground section, contact section Sections 131 and 132 of the conductor rail 134 bulge 135, 136 Fastening element 139 Inclined, leading edge 160 Fork contact 161, 162, 163, 164 Leg, fork tine 165 connecting wall 166 knife contact 170 Connecting section, vertical section 171 Indentation 200 clamping springs 210 clamping legs 211 Clamping edge 220 attachment legs 221, 222 Steg 225° angle 229 Opening 230 feather bows 251, 252 Bearing element 254 Opening 255 Extension, tab 262 Leg, fork tine 268 Contact zone 269 ​​Bulge 300 cases 310, 320 Housing section 311, 321 semicircular inner contour 315 Housing surface, stop 331, 332 Guide wall 340 Housing mounting part, base body 341, 342 Housing wall 345 Interior 350, 351, 352 Pin mount, radial bearing, auxiliary bearing 355, 356 Nut 360 lid 343, 346, 347, 348, 361, 362, 363, 366, 367 Fastening element, locking element, undercut 370 plug-in face 371 Opening 380, 381 housing bridge 400 levers 410, 420 bearing washer 411, 421 semicircular outer contour 412, 422 Inside 415, 425 Steg 430 drive units 435 Surface of the drive pin 451, 452 Bearing element, pin 490 Operating handle 510, 520 Counter bearing, bearing shell, bearing recess d distance r L , r Z radius t Z , t L thickness AT ladder catch bag Level E ER insertion direction ES insertion side GS Closed Position D axis of rotation FFeder spring force vector K clamping point KR contact frame LF conductor guide channel OS disclosure R space ZR space QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2015 104 625 A1

[0002]

Claims

[1] Spring terminal (1) for connecting an electrical conductor (2), - with one busbar (100), - with a clamping spring (200), - with a case (300), - with a lever (400), at the - the busbar (100) and the clamping spring (200) and the lever (400) are at least partially enclosed in the housing (300), - the lever (400) has a first bearing disk (410) with a first semicircular outer contour (411) for bearing 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, when the lever (400) is actuated, is designed to move the clamping arm (210) from a closed position (GS) to an open position (OS). [2] Spring terminal (1) according to claim 1, wherein the lever (400) has a second bearing disk (420) with a second semicircular outer contour (421) for supporting the lever (400) in a second counter bearing (520), wherein the second bearing disk (420) is spaced apart from the first bearing disk (410), wherein the operating handle (490) is connected to the first bearing disc (410). [3] Spring terminal (1) according to claim 2, wherein the second bearing disc is axially guided through a second outer wall of the housing, wherein preferably the axial guidance of the second bearing disk is formed exclusively by the second outer wall. [4] Spring 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) projecting axially from the first bearing disk (410), which 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 clamp (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 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 receiving the force of the clamping spring (200), and / or wherein the first counter bearing (510) has a first conductor rail wall section (110) of the conductor rail (100) with a semicircular inner contour (111), and / or where at least part of the busbar is semicircular. [7] Spring terminal (1) according to one of claims 1 to 6, wherein - the clamping spring (200) has a spring arc (230) and a support leg (220), and - the clamping leg (210) is connected to the mounting leg (220) via the spring bow (230). [8] Spring terminal (1) according to one of claims 1 to 7, wherein - the housing (300) has a first guide wall (331) and / or a second guide wall (332) of a conductor guidance channel (LF), wherein the conductor guidance channel (LF) guides the electrical conductor (2) to the terminal (K). [9] Spring terminal clamp (1) according to any one of claims 1 to 8, wherein the driver (430) is arranged closer to the mounting leg (220) in the closed position (GS) than in the open position (OS). [10] Spring terminal (1) according to one of claims 1 to 9, wherein - the mounting leg (220) of the clamping spring (200) rests on the busbar (100) on one side opposite the clamping point (K). [11] Spring terminal clamp (1) according to one of claims 1 to 10, wherein a radius of the first bearing disk (410) is greater than a thickness of the first bearing disk (410), so that for bearing the first bearing disk (410) slides on its outer contour (411). [12] Spring terminal clamp (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 terminal (1) according to any one of claims 1 to 12, wherein the driver (430) is designed as a strut, wherein preferably the strut has a uniform cross-sectional shape, where preferably the strut is formed in one piece. [14] Spring terminal (1) according to any 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 molded in one piece from a plastic part by injection molding, and / or the entire lever (400) is formed in one piece. [15] Spring terminal (1) according to any one of claims 1 to 14, wherein a circular shape is formed by the semicircular outer contour (411) of the first bearing disk (410), wherein the driver (430) is arranged at least partially within the circular shape of the first bearing disk (410). [16] Spring terminal clamp (1) according to one of claims 1 to 15, wherein outside the semicircular outer contour (411) the shape of the first bearing disk (410) deviates from an exact circle. [17] Spring terminal clamp (1) according to any one of claims 1 to 16, wherein the first semicircular outer contour (411) of the first bearing disk (410) defines a rotation axis (D) of the lever (400) when pivoting the lever (400) from the closed position (GS) to the open position (OS). [18] Spring terminal (1) according to claim 17, where the axis of rotation (D) is fixed over the pivot path and / or the lever (400) can be manually pivoted back from the open position (OS) to the closed position (GS) in a counter-rotating pivoting movement. [19] Spring terminal (1) according to claim 17 or 18, wherein the driver (430) is arranged in the open position (OS) and in the closed position (GS) outside a space (R) between 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 outside the conductor guide channel (LF) in the open position (OS) and closed position (GS). [20] Spring terminal clamp (1) according to one of claims 17 to 19, wherein the driver (430) is arranged and shaped such that when the lever (400) pivots, the distance of the area of ​​the surface in contact with the clamping leg (210) to the axis of rotation (D) changes. [21] Spring terminal (1) according to one of claims 17 to 20, wherein the distance to the axis of rotation (D) in the open position (OS) is greater than in the closed position (GS). [22] Spring 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 terminal (1) according to one of claims 1 to 22, wherein an inserted conductor (2) does not collide with the driver (430) and / or the driver (430) has no guiding function for guiding the leader (2). [24] Spring 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 terminal (1) according to one of claims 1 to 24, wherein the first bearing disk (410) is mounted for axial support on a wall of the spring terminal clamp (1) and / or wherein the first bearing disk (410) is axially guided by a first outer wall of the housing (300), wherein preferably the axial guidance of the first bearing disk (410) is formed exclusively by the first outer wall, wherein preferably the outer wall electrically insulates the electrical contact insert consisting of busbar (100) and clamping spring (200) from the outside. [26] Spring terminal (1) according to any one of claims 1 to 25, wherein the first bearing disk (410) with the semicircular outer contour (411) is radially mounted and / or wherein the first bearing disk (410) is radially mounted in the counter bearing (510). [27] Spring terminal (1) according to any one of claims 1 to 26, wherein the outer contour (411) slides on a conductor rail wall section (110) with a semicircular inner contour (111), wherein preferably a geometry of the semicircular inner contour (111) of the busbar wall section (110) is adapted to the outer contour (411) of the first bearing disk (410). [28] Spring-loaded terminal block (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 semicircular outer contour (411) of the first bearing disk (410). [29] Spring terminal clamp (1) according to one of claims 1 to 28, wherein the driver (430) is formed on an inside of the first bearing disk (410).

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