conductor connection terminal

Abstract

The invention relates to a conductor terminal with an insulating housing, which has at least one conductor entry opening for inserting an electrical conductor in a conductor entry direction and a conductor receiving chamber for receiving the connected electrical conductor, wherein the insulating housing extends in a vertical direction from a housing top to a housing bottom, wherein at least one spring-loaded clamping connection for connecting the electrical conductor by means of spring force is arranged in the insulating housing, wherein the spring-loaded clamping connection has at least one busbar and a clamping spring, which has a clamping leg with a clamping edge for clamping the electrical conductor at a clamping point on a contact section of the busbar, wherein the conductor terminal has an actuating lever pivotable about a rotational axis for actuating the clamping spring into the open position.Optionally, the conductor terminal block can have a holding element designed to keep the clamping leg in an open position.

Description

[0001] The invention relates to a conductor terminal with an insulating housing, which has at least one conductor entry opening for inserting an electrical conductor in a conductor entry direction and a conductor receiving chamber for receiving the connected electrical conductor, wherein the insulating housing extends in a vertical direction from a housing top to a housing bottom, wherein at least one spring-loaded clamping connection for connecting the electrical conductor by means of spring force is arranged in the insulating housing, wherein the spring-loaded clamping connection has at least one busbar and a clamping spring, which has a clamping leg with a clamping edge for clamping the electrical conductor at a clamping point on a contact section of the busbar, wherein the conductor terminal has an actuating lever pivotable about a rotational axis for actuating the clamping spring into the open position.Optionally, the conductor terminal block can have a holding element designed to keep the clamping leg in an open position.

[0002] Such a conductor terminal is known from DE 10 2020 119 372 A1. It is a conductor terminal with automatic connection of the electrical conductor to be connected when the conductor is inserted into the terminal. Insertion of the electrical conductor automatically releases the clamping leg of the clamping spring, which is held in an open position, thereby clamping the electrical conductor securely.

[0003] Based on this, the object of the present invention is to provide a further improved conductor terminal.

[0004] This task is solved using a conductor terminal of the type mentioned above with one, several or all of the following features a), b), c): a) the axis of rotation of the actuating lever is arranged vertically above the ladder receiving chamber, b) The actuating lever has a manual actuating section, wherein the clamping leg can be moved into the open position by means of the actuating lever by manually pressing the manual actuating section, c) The actuating lever can pivot back and forth between an open and a closed end position, the pivot angle between the open and the closed end position being less than 60° or less than 45°.

[0005] In this way, the actuating lever of the conductor terminal according to the invention can be designed to be relatively small, particularly in terms of height. The actuating lever can, in particular, be arranged completely outside the conductor receiving chamber, e.g., such that the entire actuating lever is located on the side of the conductor receiving chamber facing away from the contact section of the busbar.

[0006] The pressure actuation described in feature b) allows the user to operate the conductor terminal easily and ergonomically, especially in very small terminal designs. The pressure actuation of the manual actuation section can be designed with a relatively short stroke, thus requiring minimal space. The actuation lever can therefore be designed as a lever-type push button. This design allows for easy operation even in confined spaces, as it eliminates the need to pivot a manual actuation section of the lever away from the insulating housing, unlike conventional conductor terminals.

[0007] In particular, the swivel angle of the actuating lever required for actuating the clamping leg can be relatively small, namely less than 60° or less than 45°.

[0008] Such a design allows the integration of automatic connection technology into conductor terminals of various designs. In particular, proven conductor terminals of known design can be further developed with minimal effort to incorporate automatic connection technology, i.e., with automatic conductor connection of the electrical conductor to be clamped.

[0009] The conductor terminal has an actuating mechanism via the operating lever for the clamping arm. This mechanism allows the clamping arm to be moved into the open position by manual operation, against the spring force of the clamping spring. In this open position, the clamping arm can then be held by the retaining element, if present, even without further manual actuation of the mechanism. This allows for the insertion of the electrical conductor at any time without requiring significant force. For example, the clamping arm can be locked onto the retaining element in the open position.

[0010] The clamping arm, together with the contact section of the busbar, can form a clamping point for connecting an electrical conductor between the clamping arm and the contact section. In the open position, at least the clamping edge of the clamping arm is pivoted away from the contact section of the busbar. The clamping arm can be pivoted, for example, between an open position in which the electrical conductor is freely movable between the clamping arm and the contact section, and a clamped position in which the clamping arm clamps the electrical conductor to the contact section.

[0011] The retaining element can, for example, act directly on the clamping leg to hold it in the open position. Thus, for example, a first locking element can be arranged on the clamping leg and a second locking element on the retaining element, whereby the first and second locking elements can be locked together in the open position.

[0012] The actuating lever can have at least one spring-loaded driver which, when the actuating lever is actuated, acts on the clamping arm to move it into the open position. The actuating lever can extend at least from the manual actuating section to such a spring-loaded driver acting on the clamping arm. According to an advantageous embodiment, the axis of rotation of the actuating lever can be arranged between the manual actuating section and the spring-loaded driver. In this way, the actuating lever can be designed similarly to a rocker arm.

[0013] The actuating lever can be floating and therefore has no fixed axis of rotation within the insulating housing. The bearing point of the actuating lever, where it pivots around its axis, can be located, at least when the lever is not actuated, vertically between the conductor receiving chamber and the manual actuation section of the lever. This allows for a particularly low-profile design of the conductor terminal. For example, the height of the conductor terminal, measured vertically, can be less than twice the height of the conductor entry opening. When the actuating lever is not actuated, the manual actuation section can be located at the same level as the top surface of the insulating housing. By manually pressing on the actuation section, it can be moved towards the bottom of the housing.

[0014] The actuating lever can, for example, be arranged in a separate actuating channel within the insulating housing, located next to the conductor entry opening or an adjoining conductor entry channel. The height of the actuating channel can be less than the height of the conductor receiving chamber.

[0015] According to an advantageous embodiment of the invention, the actuating element between the manual actuating section and the spring driver is designed to branch into at least two side carriages, which engage a portion of the clamping spring associated with the actuating element, in particular a spring arc of the clamping spring. This allows for advantageous structural integration of the actuating lever into the insulating housing, especially such that the required installation space in the vertical direction is relatively small. The actuating lever can then laterally engage a portion of the clamping spring with its two side carriages, which can project from the manual actuating section like arms. The actuating lever can be U-shaped when viewed in the conductor insertion direction and / or in the vertical direction.

[0016] According to an advantageous embodiment of the invention, the actuating lever is supported against the spring force exerted by the clamping arm on at least one edge of the insulating housing. This allows for simple and reliable mounting of the actuating lever without additional components. This also promotes good integration of the actuating lever into the insulating housing with a low overall height. Since, due to the holding function of the clamping arm, the actuating lever is rarely subjected to the force of the clamping spring for very long in the open position, the resulting stress on the insulating housing is also relatively low and does not lead to damage to the insulating material of the housing.

[0017] According to an advantageous embodiment of the invention, the axis of rotation of the actuating lever is arranged between the manual actuating section and the spring driver. For example, the actuating lever can have a bearing element with which it is supported, for instance, on the aforementioned edge of the insulating housing. The axis of rotation of the actuating lever can be formed by the bearing element. In an advantageous embodiment, the bearing element can be arranged between the manual actuating section and the spring driver.

[0018] The retaining element can be formed integrally with the clamping spring. Alternatively, the retaining element can be a separate component, attached, for example, to an insulating housing of a conductor terminal, to the busbar, or to another component.

[0019] According to an advantageous embodiment of the invention, the spring-loaded clamp connection has a release element with a release section by which the clamping leg, held in the open position on the retaining element, can be released from the retaining element when an electrical conductor to be connected exerts an actuating force on the release section. This allows the clamping leg to be automatically released from the retaining element by inserting the electrical conductor. The release section can be actuated by a separate tool, a component of the conductor connection terminal, such as an actuating element, or directly by the inserted electrical conductor itself, thereby causing the clamping leg to be released from the retaining element. By means of the release element, the clamping leg, held in the open position on the retaining element, can be released from the retaining element by applying pressure to the release section in the conductor insertion direction (L) of the electrical conductor to be connected.Depending on the design of the spring-loaded clamping connection, the release element can be designed as part of the clamping spring, e.g. as a release element formed in one piece with the clamping spring, or as a separate component.

[0020] According to an advantageous embodiment of the invention, the spring-loaded clamping connection has a release element, the actuation of which allows the retaining element to be displaced, pivoted, or otherwise deflected to such an extent that the clamping leg held by the retaining element is released from the retaining element. Because the retaining element is movably arranged, i.e., displaceable, pivotable, or otherwise deflectable, it can be easily deflected by the inserted conductor to achieve the desired release of the clamping leg from the retaining element. The retaining element can, for example, be displaceably mounted, e.g., in a linear or arc-shaped direction. The retaining element can also be pivotably mounted. In this case, the retaining element can be pivoted about a fixed or variable pivot axis. In the case of a variable pivot axis, the retaining element can, for example, be mounted to pivot in a floating manner.The retaining element can also perform a combined sliding and pivoting movement. Alternatively, the retaining element can be mounted in a different way so that it can deflect sufficiently far to release the locking mechanism of the clamping leg on the retaining element.

[0021] According to an advantageous embodiment of the invention, the retaining element is pivotably mounted, for example, on the contact section of the busbar via at least one pivot bearing element. In this way, the axis of rotation of the retaining element can be positioned as far as possible from the contact point of the clamping leg on the retaining element, which is helpful in minimizing the required release stroke on the release element.

[0022] According to an advantageous embodiment of the invention, the release element is integrated into the component or assembly of the spring-clamp connection that includes the retaining element. This minimizes the design and assembly effort for the spring-clamp connection. In particular, only one component or assembly is required for mounting the release element and the retaining element, rather than two separate components or assemblies. For example, the release element can be integrally formed with the retaining element. The component or assembly can be made of, for example, plastic or metal, or a combination of such materials.

[0023] According to an advantageous embodiment of the invention, the retaining element is arranged behind the clamping point or behind the majority of the busbar in the direction in which the electrical conductor is inserted into the spring-loaded clamping connection. In this way, the retaining element does not obstruct the insertion of the electrical conductor. For example, in the open position, i.e., when the clamping leg is locked onto the retaining element, the retaining element, when viewed in the direction of conductor insertion, may not protrude into a conductor receiving space, or may only protrude slightly, relative to the clamping leg.

[0024] According to an advantageous embodiment of the invention, the clamping spring has a support section that is connected to the clamping leg via a spring arc, the support section being designed to support the clamping spring on the busbar, in particular on the frame part. The support section ensures secure support of the clamping spring and provides sufficient resistance to the spring force exerted by the clamping leg.

[0025] According to an advantageous embodiment of the invention, the busbar has a frame part in which the clamping spring is hooked, clamped, or otherwise received, the frame part having a through-opening through which the electrical conductor to be connected can be inserted. For example, the clamping spring can be hooked with its support section onto an edge section of the frame part surrounding the through-opening. The clamping spring can be hooked into the frame part such that the support section is attached to the frame part and the clamping leg is oriented towards the contact section of the busbar, i.e., in the clamping position without an inserted electrical conductor, it rests against the contact section, or, with an inserted electrical conductor, the clamping leg presses the electrical conductor against the contact section.

[0026] The frame component can be formed in one piece from the busbar material, for example, as a section bent and punched out from the contact section. The frame component can have a circumferential frame that completely surrounds the through-opening. For example, the through-opening can have a substantially rectangular cross-section. The frame component can then have a first leg projecting from the contact section on one side and a second leg projecting from the opposite side, with the first and second legs extending parallel to each other. The frame component can also have a transverse leg connecting the free ends of the first and second legs. The clamping spring can then be hooked onto the transverse leg via the support section.

[0027] According to an advantageous embodiment of the invention, the retaining element and / or the release element projects into the through-opening of the frame part. This allows for a compact design of the spring-clamp connection and good integration of the automatic connection technology.

[0028] For example, the actuating lever can have a manual actuation section, e.g., in the form of a lever handle, from which the actuating lever extends around the clamping spring and / or busbar assembly via two side plates projecting parallel to the manual actuation section. These side plates can be located within the insulating housing. A spring driver can be arranged on the inner side of each side plate, i.e., on the side facing the clamping spring. This spring driver can be integrally formed with the respective side plate. By means of such a spring driver, the clamping spring can be actuated either directly at the clamping arm or at actuation sections associated with the spring drivers, which project laterally beyond the clamping arm, and thus pivoted into the open position.

[0029] According to an advantageous embodiment of the invention, the release element is resiliently mounted by means of at least one spring element, wherein the release element is actuated by the electrical conductor being inserted, against the spring force of the spring element. This ensures that the release element does not unintentionally release the locking mechanism between the clamping arm and the retaining element, for example, due to vibrations of the conductor terminal, because the additional spring force of the spring element must first be overcome. The spring element required for the resilient mounting can be attached to the release element or formed integrally with it.

[0030] According to an advantageous embodiment of the invention, the release section of the release element projects into the conductor receiving chamber. According to another advantageous embodiment, the release section of the release element can be arranged behind the contact section or at least behind the clamping point in the conductor insertion direction (L).

[0031] For the purposes of the present invention, the indefinite term "a" is not to be understood as a numeral. Therefore, when, for example, a component is mentioned, this is to be interpreted as "at least one component". Where angles are specified in degrees, these refer to a circle of 360 degrees (360°).

[0032] The invention is explained in more detail below with reference to exemplary embodiments and drawings.

[0033] They show Fig. 1, Fig. 2 to Fig. 3 a conductor terminal in a side sectional view in various operating states, Fig. 4 spring-loaded clamp connections of the conductor terminal according to Fig. 1 in the clamping position in perspective view, Fig. 5 the spring-loaded clamping connections according to Fig. 4 in the open position, Fig. 6 a combined hold-release element in perspective view, Fig. 7 the spring clamp connections according to Fig. 4 with an operating lever, Fig. 8, Fig. 9 to Fig. 10 Another embodiment of a conductor terminal block in a side sectional view in various actuation states, Fig. 11 spring-loaded clamping connections of the conductor terminal according to Fig. 8 with an operating lever in perspective view.

[0034] The Fig. Figure 1 shows a side sectional view of a conductor terminal 1 with an insulating housing 2. In the illustrated embodiment, the conductor terminal 1 is designed as a multi-pole conductor terminal. Accordingly, the conductor terminal 1 has several conductor entry openings 20 in the insulating housing 2, through which an electrical conductor to be connected can be inserted into the insulating housing 2 in a conductor entry direction L. The insulating housing 2 has a conductor receiving chamber 26 associated with each conductor entry opening 20, which serves to receive the connected electrical conductor. Several spring-clamp terminals are arranged in the insulating housing 2, with each spring-clamp terminal being associated with a conductor entry opening 20. The conductor terminal 1 has a pivotable actuating lever 6 for actuating the clamping spring 4 of each spring-clamp terminal.The actuating lever 6 is arranged in a separate actuating channel 24 of the insulating housing 2, which is located next to the conductor entry opening 20 or an adjoining conductor entry channel. This separates the actuating lever 6 from the conductor entry opening 20 and the conductor receiving chamber 26. In this way, the electrical conductor can be guided to the terminal 30 without interference from any part of the actuating lever 6, i.e., without snagging on the actuating lever 6.

[0035] The insulating housing 2 extends in a vertical direction H from a housing top 22 to a housing bottom 23. At a conductor entry side, the insulating housing 2 has the conductor entry opening 20, which serves for inserting an electrical conductor in a conductor entry direction L. At the end opposite the conductor entry side, the insulating housing 2 has a rear housing wall 21.

[0036] It can be seen that the spring-loaded clamping connection arranged in the insulating housing 2 has a clamping spring 4 and a busbar 3. The busbar 3 has a contact section 31 and a frame part 32 bent at an angle from the contact section 31, which, however, only appears in the Fig. 4 is more clearly visible. The contact section 31 serves for the electrical contact of a connected electrical conductor. The clamping spring 4 has a support section 41, which is attached to the frame part 32. The support section 41 can, in particular, be hooked onto a transverse leg 33 of the frame part 32 located away from the contact section 31. The clamping spring 4 has a spring arc 42 adjoining the support section 41 and a clamping leg 43 adjoining the spring arc 42, which serves to clamp an electrical conductor to the contact section 31. The clamping leg 43 terminates at its free end with a clamping edge 46.

[0037] To actuate the clamping spring 4, i.e., to deflect the clamping leg 43 from the position in Fig. In the clamping position shown in Figure 1, the actuating lever 6 is provided to move the device from the open position. The actuating lever 6 has a manual actuating section 60 that projects from the insulating housing 2. The user can grasp and pivot the actuating lever 6 at the manual actuating section 60. The actuating lever 6 extends into the insulating housing 2 via side walls 65. The actuating lever 6 has a bearing element 61 on each side wall 65, via which the actuating lever 6 is supported on an edge of the insulating housing 2. The bearing element 61 also forms a pivot axis D when the actuating lever 6 is pivoted.

[0038] When the actuating lever 6 on the manual actuating section 60 is subjected to a pressure force directed towards the lower side of the housing 23, the actuating lever 6 pivots about its axis of rotation D formed by the bearing element 61. In doing so, the actuating lever 6 deflects the clamping arm 43 into the open position by means of a spring driver 62 molded onto each side wall 65, i.e., moves its clamping edge 46 away from the contact section 31, as shown by the Fig. Figure 2 shows that the clamping point can be opened so that a clamped electrical conductor can be removed or a conductor to be clamped can be easily inserted. The axis of rotation D is located between the manual actuation section 60 and the spring driver 62.

[0039] Furthermore, a retaining element 5 is arranged in the insulating housing 2, which serves to hold the clamping leg 43 in the open position. The retaining element 5 has a locking element 50 against which the clamping leg 43 can be locked with a locking element, which in this case is formed by the clamping edge 46. However, it is also possible that a separate locking element is formed on the clamping leg 43. The retaining element 5 has one or more support cheeks 53 by which the retaining element 5 is supported against the force acting on the locking element 50, for example against the busbar 3 or a part of the housing 2.

[0040] As the Fig. As shown in Figure 2, the clamping leg 43 can engage with its clamping edge 46 or another locking element on the locking element 50 of the holding element 5 in the open position. If the clamping leg 43 is engaged on the holding element 5 in this way, the actuating lever 6 can be pivoted back to its initial position, as shown in Figure 2. Fig. 3 shows.

[0041] Furthermore, a release element 8 is arranged in the insulating housing 2. This element serves, when actuated, to deflect the retaining element 5 such that the clamping leg 43 held by the retaining element 5 is released from the retaining element 5. For this purpose, the release element 8 has a release section 80. When an electrical conductor is inserted into the insulating housing 2 through the conductor entry opening 20 in the conductor insertion direction L, pressing the end of the electrical conductor against the release section 80 causes the retaining element 5 to deflect towards the rear housing wall 21 of the insulating housing 2, thus releasing the locking mechanism between the locking element 50 and the clamping leg 43. The clamping leg 43 then moves into the clamping position due to the spring preload of the clamping spring 4.

[0042] The Fig. Figure 4 shows the spring-loaded clamping terminals arranged in the insulating housing 2, which have two clamping springs 4 of the type described above arranged side by side. The spring-loaded clamping terminals have a common transverse busbar 3 with a contact section 31 and a frame part 32 each associated with a clamping spring 4. It can be seen that the retaining element 5 is pivotably attached to the busbar 3 in this embodiment by means of a pivot bearing element 51 projecting laterally from the retaining element 5 to the left and right, which engages behind the busbar 3, e.g. in the area of ​​the curved transition from the contact section 31 to the frame part 32. The retaining element 5 is thus pivotably mounted on the busbar 3.

[0043] The Fig. Figure 4 shows the spring-loaded clamping connections with the clamping springs 4 in the clamping position. Fig. 5 shows the arrangement according to Fig. 4 - shown here for better illustration with a sectional view of the front clamping spring 4 and the busbar 3 - in the open position, in which the clamping leg 43 is locked to the retaining element 5, specifically to the locking element 50.

[0044] The Fig. Figure 6 shows an advantageous embodiment of the retaining element 5 with the release element 8 in the form of a single-piece formed assembly, e.g., in the form of a sheet metal part, which can be provided as a stamped and bent component. In this way, a combined retaining-release element 5, 8 is formed.

[0045] The retaining element 5 has two support cheeks 53, which are spaced apart from each other and essentially parallel to one another. The cheeks 53 are connected to each other via a transverse connecting section 52 in the area of ​​the locking elements 50. The retaining element 5 is supported by the free ends of the support cheeks 53, which are spaced apart from the transverse connecting section 52, and / or by the pivot bearing elements 51, e.g., supported on the busbar 3. The release element 8 is integrally formed directly on the transverse connecting section 52 and extends via an angled section to the release section 80, which serves for the actual actuation of the release element 8 by the electrical conductor.

[0046] The Fig. Figure 7 further illustrates the attachment of the clamping spring 4 to the frame part 32 of the power rail 3. In addition, the fork-like design of the actuating lever 6 with the side wings 65 branching off in a fork-like manner from the manual actuating section 60 is visible.

[0047] While in the previously described embodiment of the conductor terminal 1 the manual actuation section 60 is arranged on the housing side of the insulating housing 2 where the conductor entry opening 20 is located, an embodiment of a conductor terminal 1 is described below in which the manual actuation section 60 is located on the opposite side, i.e., on the rear housing side 21. Fig. Figure 8 shows a conductor connection terminal 1 designed in this way in a sectional view comparable to the Fig. 1, wherein the clamping spring 4 is located in the same way as in Fig. 1 is in the clamping position.

[0048] The actuating lever 6 extends from the rear housing side 21 via an actuating channel 24 into the interior of the insulating housing 2. This is evident in the Fig. 8 in turn a side cheek 65 of the actuating lever 6.

[0049] To better illustrate the further course of the actuating lever 6 in the insulating housing 2, the following is shown: Fig. 9 a sectional view of the conductor terminal according to Fig. 8 is shown in another section plane that passes through the side wall 65. A spring driver 62 is visible on the side wall 65 at the end facing away from the manual actuation section 60. This spring driver allows the clamping arm 43 to be deflected into the open position when the manual actuation section 60 is manually actuated, similar to the conductor connection terminal 1 described above.

[0050] The Fig. Figure 10 shows the conductor connection terminal in the same section plane as Fig. 8, wherein the actuating lever 6 is pivoted by pressing the manual actuating section 60, thereby moving the clamping arm 43 into the open position, where it is locked onto the retaining element 5. The actuating lever 6 can now be pivoted back to its initial position (similar to in Fig. 3) The clamping leg 43 remains in the open position due to the locking mechanism on the retaining element 5.

[0051] The Fig. Figure 11 illustrates the structure of the conductor connection terminal 1 according to the Fig. 8, Fig. 9 to Fig. 10 arranged spring-loaded clamping connections. The busbar 3 and the combined holding-release element 5, 8 can be designed similarly to those previously described above. Fig. 4, Fig. 5 to Fig.6 described. It can be seen that the actuating lever 6, with its fork-like shape, now extends from the opposite direction to the clamping spring 4 and engages a widened section of the clamping arm 43 with the respective spring drivers 62 in order to deflect it into the open position when the manual actuating section 60 is pressed accordingly. The actuating lever 6 can in turn be supported on an edge of the insulating housing 2. For this purpose, for example, a laterally projecting bearing projection 61 can be formed on each side wall 65, e.g. in the form of a round bearing axis. Reference symbol list: 1 conductor connection terminal 2 insulating housings 3 Power rail 4 clamping springs 5 retaining element 6 operating levers 8 Solvent element 20 conductor entry openings 21 rear case wall 22 Top of case 23 Underside of housing 24 actuation channels 26 Head admission chamber 30 clamping point 31 Contact section 32 frame part 33 transverse legs 41 Support section 42 feather bows 43 clamping legs 46 clamping edge 50 locking elements 51 Swivel bearing element 52 Cross-connection section 53 Support cheek 54 side wall 55 lower wall 56 upper wall 60 manual actuation section 61 Bearing element 62 spring drivers 65 Side cheek 66 free space 67 Locking element 68 Storage section 69 manual operating aids 80 Solution section 81 Spring element D axis of rotation H Altitude L conductor entry direction ***** 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 2020 119 372 A1

[0002]

Claims

[1] Conductor terminal (1) with an insulating housing (2) having at least one conductor entry opening (20) for inserting an electrical conductor in a conductor entry direction (L) and a conductor receiving chamber (26) for receiving the connected electrical conductor, wherein the insulating housing (2) extends in a vertical direction (H) from a housing top (22) to a housing bottom (23), wherein at least one spring-loaded clamping connection for connecting the electrical conductor by means of spring force is arranged in the insulating housing (2), wherein the spring-loaded clamping connection has at least one busbar (3) and a clamping spring (4) having a clamping leg (43) with a clamping edge (46) for clamping the electrical conductor at a clamping point (30) on a contact section (31) of the busbar (3),wherein the conductor terminal (1) has an actuating lever (6) that can be pivoted about a pivot axis (D) to actuate the clamping spring (4) into the open position, characterized by one, several or all of the following characteristics a), b), c): a) the axis of rotation (D) of the actuating lever (6) is arranged in the vertical direction (H) above the ladder receiving chamber (26), b) the actuating lever (6) has a manual actuating section (60), wherein the clamping leg (43) can be moved into the open position by means of the actuating lever (6) by manually pressing the manual actuating section (60), c) the actuating lever (6) can pivot back and forth between an open and a closed end position, the pivot angle between the open and the closed end position being less than 60° or less than 45°. [2] Conductor terminal according to claim 1, characterized by, that the actuating lever (6) extends at least from the manual actuating section (60) to a spring driver (62) acting on the clamping leg (43), wherein the actuating element (6) forks between the manual actuating section (60) and the spring driver (62) into at least two side carriages (65) which encompass a part of the clamping spring (4) associated with the actuating element (6), in particular a spring arc (48) of the clamping spring (4). [3] Conductor terminal according to one of the preceding claims, characterized by , that the actuating lever (6) is supported on at least one edge of the insulating housing (2) against the spring force acting from the clamping leg (43). [4] Conductor terminal according to one of the preceding claims, characterized by , that the axis of rotation (D) of the actuating lever (6) is arranged between the manual actuating section (60) and the spring driver (62). [5] Conductor terminal according to one of the preceding claims, characterized by , that the conductor terminal (1) has a retaining element (5) which is designed to hold the clamping leg (43) in the open position. [6] Conductor terminal according to claim 5, characterized by , that the retaining element (5) is pivotably supported on the busbar (3) via at least one pivot bearing element (51). [7] Conductor terminal according to one of claims 5 to 6, characterized by , that the spring-loaded clamping connection has a release element (8) by actuation of which the retaining element (5) can be displaced, pivoted or deflected in any other way so that the clamping leg (43) held on the retaining element (5) is released from the retaining element (5). [8] Conductor terminal according to claim 7, characterized by , that the release element (8) is part of the component or assembly of the spring-loaded clamping connection which has the retaining element (5). [9] Conductor terminal according to one of claims 7 to 8, characterized by , that the clamping leg (43) held in the open position on the holding element (5) can be released from the holding element (5) when an electrical conductor to be clamped exerts an actuating force on a release section (80) of the release element. [10] Conductor terminal according to one of claims 5 to 9, characterized by , that the retaining element (5) is arranged in the conductor insertion direction (L) of the electrical conductor into the spring-loaded clamping connection behind the clamping point or behind the predominant part of the busbar (3). [11] Conductor terminal according to one of the preceding claims, characterized by , that the busbar (3) has a frame part (32) in which the clamping spring (4) is hooked, clamped or otherwise received, wherein the frame part (32) has a through-opening through which the electrical conductor to be connected can be inserted. [12] Conductor terminal according to claim 11, characterized by , that the retaining element (5) and / or the release element (8) protrudes into the through-opening of the frame part (32). [13] Conductor terminal according to one of the preceding claims, characterized by , that the clamping spring (4) has a support section (41) which is connected to the clamping leg (43) via a spring arc (42), wherein the support section (41) is designed to support the clamping spring (4) on the conductor rail (3), in particular on the frame part (32).

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