Contact insert of a conductor terminal block and the conductor terminal block formed therewith

Abstract

Contact insert of a conductor terminal (1) with spring clamping technology, wherein the contact insert has a clamping spring (40, 41, 42) and a manual actuating element (5), wherein the clamping spring (40, 41, 42) has a clamping leg (40) which is configured to clamp an electrical conductor at a clamping point, wherein the clamping point can be opened by the manual actuating element (5), with the following features: a) the contact insert has one or more metal parts (4), b) the clamping spring (40, 41, 42) is formed in one piece on a metal part (4), c) A contact leg (44) is formed in one piece on a metal part (4) which is opposite the clamping leg (40), so that the clamping point for the electrical conductor can be arranged between the clamping leg (40) and the contact leg (44), d) the actuating element (5) is movably mounted between the clamping leg (40) and the support leg (44), characterized in that the actuating element (5) is clamped at least one of the bearing pins (53) of the actuating element (5) between the clamping leg (40) and the support leg (44).

Description

[0001] The invention relates to a contact insert of a conductor terminal according to the preamble of claim 1. The invention further relates to a conductor terminal with an insulating housing and at least one such contact insert arranged wholly or partially in the insulating housing.

[0002] In general, the invention relates to the field of spring-clamp technology for electrically contacting electrical conductors. Numerous proposals already exist for the implementation of such conductor terminals and their contact inserts, e.g., in EP 2 917 971 B1. The term "contact insert" refers to the components involved in connecting the electrical conductor, i.e., clamping and electrically contacting it. A complete conductor terminal has at least one such contact insert and an insulating housing that wholly or partially surrounds the contact insert. Depending on the design, manual actuation of the clamping arm to open the clamping point can be performed, for example, by an external tool that is not part of the contact insert or the conductor terminal. The present invention relates to contact inserts and conductor terminals with their own manual actuation element.The manual actuating element is part of the contact insert or the conductor connection terminal. The actuating element can be, for example, a push button, such as a linearly sliding push button, or a pivoting lever.

[0003] A spring-loaded clamping connection and a conductor connection terminal are known from DE 10 2013 101 411 A1. A conductor connection terminal is known from DE 20 2017 100 038 U1. A spring-loaded clamping connection is known from DE 20 2015 105 993 U1. A connection terminal is known from DE 10 2010 025 930 A1. A connection terminal is known from WO 2018 / 036886 A1. A conductor connection terminal for clamping at least one electrical conductor is known from DE 10 2014 119 416 A1.

[0004] The invention is based on the objective of providing a compact and universally applicable contact insert for such a conductor terminal. Furthermore, a conductor terminal with such a contact insert is to be provided.

[0005] This problem is solved with a contact insert according to one of claims 1 and 17.

[0006] The contact insert has the advantage of being manufactured in a simple and therefore cost-effective manner. This is achieved, on the one hand, by the fact that the contact insert comprises one or more metal parts on which the clamping spring and the contact leg are already integrally formed. Only the actuating element is required as a further component, so that the contact insert according to the invention can be provided with just two or at least a few separate components, namely the metal part(s) and the actuating element. Such a metal part can be designed as a sheet metal part or other sheet-shaped component, e.g., as a stamped-bent component, for example, by being stamped from a flat sheet of metal and bent over several times.It is advantageous, for example, if only one single-piece metal part is used, in which both the clamping spring and the contact leg are formed in one piece, or if two metal parts are used, with the clamping spring formed in one piece on one metal part and the contact leg formed in one piece on the other metal part. These two metal parts can be joined together, for example, detachably or permanently, by means such as screwing, riveting, gluing, soldering, or welding.

[0007] Advantageously, the actuating element is mounted on the metal part, specifically between the clamping leg and the contact leg. This facilitates a compact design of the contact insert and universal applicability in conductor terminals of various types. In this way, the actuating element can be in direct contact with either the clamping leg or the contact leg. In one embodiment of the invention, the actuating element, which is movably mounted between the clamping leg and the contact leg, is clamped between them, i.e., held under a preload. Alternatively, the actuating element can be held completely or almost without tension between the clamping leg and the contact leg.The actuating element is fixed in its basic position by means of its fastening by clamping between the clamping leg and the mounting leg, but is nevertheless movable so that the necessary actuating movement to open the clamping point can be carried out.

[0008] In this way, the contact insert can be provided as a self-supporting contact insert. This means that the assembly, comprising the metal part(s) and the actuating element clamped therein, can be provided as a self-manageable assembly in which the actuating element does not easily detach from the metal part(s). The assembly, i.e., the contact insert, is particularly suitable for bulk material handling and for automated assembly.

[0009] The manual actuator can be moved back and forth between an open and a closed position. The open position of the actuator corresponds to an open clamping point, where an electrical conductor can be inserted or removed without force. The closed position of the actuator corresponds to a closed clamping point, i.e., a state in which an electrical conductor is clamped to the clamping point by the clamping arm, or, if no electrical conductor is inserted, the clamping arm rests against the mounting arm or a busbar.

[0010] According to an advantageous embodiment of the invention, the metal part has at least one connecting section through which the contact leg is directly or indirectly connected to the clamping leg. For example, the contact leg can be indirectly connected to the clamping leg via at least one further section connected to the clamping leg. Accordingly, the contact leg is not directly connected to the clamping leg; at least the connecting section constitutes an additional part of the integrally formed metal part or of the multiple metal parts through which the contact leg is connected to the clamping leg. For example, the clamping spring can, in addition to the clamping leg, also have a spring arc adjoining the clamping leg and a contact leg adjoining the spring arc. The contact leg can then be connected to the contact leg via the connecting section.

[0011] According to an advantageous embodiment of the invention, the connecting section forms a guide surface for the electrical conductor to be clamped. In this way, the guidance of the electrical conductor can be improved without additional components.

[0012] According to an advantageous embodiment of the invention, the contact insert has a conductor entry direction in which the electrical conductor to be clamped is inserted into the contact insert, with the connecting section being arranged essentially parallel to the conductor entry direction of the contact insert. In this way, the connecting section can run alongside the inserted electrical conductor, so that the electrical conductor can be guided laterally past the connecting section to the clamping point. This also promotes a compact design of the contact insert and the conductor terminal formed therewith.

[0013] According to the invention, the actuating element has at least one bearing pin. In one embodiment of the invention, the bearing pin rests against the mounting leg. Thus, the actuating element is supported on the mounting leg via the bearing pin. In the case of a pivotable actuating element, the bearing pin can also serve as the bearing axis, i.e., the bearing axis can simultaneously form the axis of rotation of the actuating element during pivoting.

[0014] According to an advantageous embodiment of the invention, the mounting leg has a projection at or near its free end, which is opposite the clamping leg. This projection forms a receptacle for the bearing pin of the actuating element. The projection can, for example, be in the form of a curve of the mounting leg describing a segment of a circle. This allows the actuating element to be securely fixed at the desired location on the metal part. The bearing pin can be designed as a cylindrical bearing pin.

[0015] According to an advantageous embodiment of the invention, the mounting leg extends beyond the protrusion with an end section to its free end, the end section forming an insertion aid for the bearing pin during the assembly of the actuating element to the metal part. This facilitates and simplifies the assembly of the aforementioned components, namely the actuating element and the metal part. In particular, automated assembly is possible with minimal effort.

[0016] According to an advantageous embodiment of the invention, the actuating element has a manual actuation area where it is manually actuated to open the clamping point. Two spaced-apart side plates of the actuating element project from this manual actuation area, and the contact leg is arranged between the side plates. The side plates can, for example, abut and / or encompass the contact leg. Accordingly, the actuating element can be arranged to overlap the metal part at least partially, which in turn facilitates a compact design of the contact insert and the conductor terminal.

[0017] The actuating element can thus be implemented with an open area between the side walls. This space between the side walls can be used to place further elements, as will be explained below. This also promotes a compact design of the contact insert and the conductor terminal.

[0018] The actuating element can have a stub shaft projecting from the outer surface of one or both side walls, i.e., in the area beyond the area enclosed by the side walls. The stub shaft can be arranged concentrically to the bearing pin, thus forming an outward extension of the bearing pin, or it can be offset from the bearing pin. The stub shaft(s) can provide additional fixation of the contact insert within an insulating housing of the conductor terminal and simultaneously offer additional rotational support for the actuating element.

[0019] According to an advantageous embodiment of the invention, the bearing pin extends from one side wall to the other. This allows for a compact mounting of the actuating element on the metal part.

[0020] According to an advantageous embodiment of the invention, the contact insert has a conductor entry area into which the electrical conductor to be clamped is to be inserted, the conductor entry area extending through the area enclosed by the side walls. Accordingly, the electrical conductor can be housed in a space enclosed by the side walls.

[0021] According to an advantageous embodiment of the invention, the clamping arm has a clamping tongue on which a clamping edge for clamping the electrical conductor is arranged. The clamping arm has at least one or two actuating tabs arranged laterally next to the clamping tongue, each of which forms contact surfaces for mechanical actuation by the actuating element to open the clamping point. In this way, the clamping tongue can be shaped and dimensioned exclusively for its function of clamping the electrical conductor. The at least one or two actuating tabs, which can again be shaped and dimensioned separately for their function of mechanical actuation, serve the function of actuating the clamping arm.

[0022] According to an advantageous embodiment of the invention, the at least one or two actuating tabs simultaneously form a counter-bearing against the bearing of the actuating element on the clamping leg. This has the advantage that no further elements are required for counter-bearing the actuating element. Instead, the one or two actuating tabs can, in addition to their function as actuating elements of the clamping leg, also perform the counter-bearing function.

[0023] According to an advantageous embodiment of the invention, the at least one or two actuating tabs are bent in the same direction as the protrusion. For example, if the metal part is viewed from above with respect to the mounting leg, the one or two actuating tabs and the protrusion can each be convexly bent.

[0024] According to an advantageous embodiment of the invention, the actuating element has a bearing recess on one or both side walls, wherein, in the closed position, the actuating element is positively engaged with a respective actuating tab via a respective bearing recess, the shape of the bearing recess being adapted to the shape of the respective actuating tab. This allows for secure mounting and fixing of the actuating element to the metal part, so that the actuating element is also reliably fixed in the direction of the clamping leg by the positive-locking connection.

[0025] According to an advantageous embodiment of the invention, the actuating element has an actuating contour on one or both side faces for actuating an associated actuating tab and, accordingly, for deflecting the clamping arm. The actuating contour comes into contact with the associated actuating tab when the actuating element is in the open position or is moved from the closed position to the open position. This allows for reliable mechanical actuation of the clamping arm.

[0026] The indentation in the mounting leg and the actuating tabs can be positioned at least approximately opposite each other, allowing the actuating element to be positively and force-fitted and clamped between them. This enables the provision of a bulk material-compatible, pre-assembled, modular contact insert.

[0027] According to an advantageous embodiment of the invention, the contact insert comprises a busbar as a further component, extending between the contact leg and the clamping leg. The busbar rests against the contact leg at one contact side and, together with the clamping leg, forms the clamping point for the electrical conductor at the contact side opposite the contact side. Such a busbar further improves the electrical contact of the conductor. In addition, the busbar can be used as an electrical contact element for contacting other elements of the conductor terminal, e.g., as an electrical bridge to a further assembly or for bridging between several adjacent contact inserts of a multi-conductor terminal.

[0028] The busbar is an optional component of the contact insert, meaning the contact insert can also be used without the busbar.

[0029] The aforementioned problem is also solved by a conductor terminal block with an insulating housing and at least one contact insert of the type described above, arranged wholly or partially within the insulating housing. This also allows the previously described advantages to be realized.

[0030] The busbar can be inserted into the contact insert through a recess in the insulating housing, for example, when the actuator is open. This allows the busbar to be retrofitted to the contact insert even if it is already installed in the insulating housing.

[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 the accompanying drawings. These show... Fig. 1 - an actuating element in perspective view and Fig. 2 - a one-piece formed metal part in perspective view and Fig. 3 - a contact deployment in perspective representation and Fig. 4 - the use of contact according to Fig. 3 in partially cut side view and Fig. 5 - one assembly step of the actuating element on the metal part in side view and Fig. 6 - the use of contact according to Fig. 4 in uncut side view and Fig. 7 - a conductor terminal block in perspective view and Fig. 8 - a mounting step of a busbar in a conductor connection terminal according to Fig. 7 in perspective view and Fig. 9 - the conductor connection terminal with mounted busbar in perspective view and Fig. 10 - the assembly step of the busbar in the conductor connection terminal according to Fig. 8 in partially cut side view and Fig. 11 - the conductor connection terminal according to Fig. 9 in partially cut side view and Fig. 12 - another embodiment of a contact insert in perspective view.

[0033] In the illustrated examples, the actuating element is shown as a pivotable actuating lever. The explanations also apply analogously to the design of the actuating element as a push button.

[0034] The in Fig. The actuating element 5 shown in Figure 1 has a manual actuation area 50, e.g., in the form of a lever arm. The manual actuation area serves to manually actuate the actuating element in order to pivot it. Two spaced-apart side plates 51 project from the manual actuation area 50. A bearing pin 53 extends between the side plates 51. On one or both side plates 51, an axle stub 55 is arranged on the outside, i.e., on the side of the respective side plate 51 facing away from the bearing pin 53. The bearing pin 53 and the axle stub 55 are arranged coaxially with each other. Each side plate 51 has a substantially concave bearing recess 52 and an actuation contour 54 that is eccentric with respect to the bearing pin 53 on a side facing the clamping leg.The actuation contour 54 allows a clamping leg to be deflected, as described below.

[0035] If the actuating element 5 were designed as a push button, it could be designed similarly with respect to the side walls 51, the bearing pin 53, the bearing recess 52, and the axle stub 55. A manual actuation area 50 would then, for example, be arranged in the form of a push button surface above the side walls 51 or on the side facing the conductor entry direction L.

[0036] The Fig. Figure 2 shows a one-piece formed metal part 4, on which a clamping spring 40, 41, 42, a contact leg 44, and a connecting section 43 linking the contact leg 44 to the clamping spring 40, 41, 42 are integrally formed. The clamping spring 40, 41, 42 has a clamping leg 40, a spring arc 41 adjoining the clamping leg, and a contact leg 42 adjoining the spring arc 41, which extends over an angled section to the connecting section 43. The clamping leg 40 is divided at its end into a clamping tongue 47 and two actuating tabs 49 arranged laterally to the clamping tongue 47. The clamping tongue 47 terminates with a clamping edge 48, which comes into contact with an electrical conductor when the conductor is clamped at a clamping point of the contact insert. The clamping point can be formed, for example, between the clamping edge 48 and a surface of the support leg 44 facing the clamping edge 48.The area of ​​the metal part 4 designated by reference numeral 60 can optionally be assigned to the contact leg 42 or to the connecting section 43.

[0037] The clamping tongue 47 can, for example, be bent with the opposite direction of curvature to the actuating tabs 49. The actuating tabs 49 can, for example, overlap the clamping tongue 47 laterally and can, for example, be projected towards the mounting leg 44.

[0038] The mounting leg 44 extends beyond a projection 45 to an end section 46. The projection 45 serves to receive and support the bearing pin 53 of the actuating element 5.

[0039] While the Fig. 1 and Fig. 2. The components of the contact insert, i.e., the actuating element 5 and the metal part 4, are shown separately. Fig. 3 these components in the assembled state of the contact insert. Fig. 4 shows the contact application according to Fig. 3 in side view, wherein the actuating element 5 is shown cut in the middle in the longitudinal direction, so that the elements arranged behind the upper side wall 51 are visible.

[0040] As can be seen, the actuating element 5 is now clamped between the clamping leg 40 and the support leg 44. The bearing pin 53 rests against the inside of the recess 45. The actuating lugs 49 act as counter bearings, coming into contact with the bearing recesses 52 on the side walls 51 of the actuating element 5. The actuating element 5 is thus securely fixed in the metal part 4, but can still pivot about the bearing pin 53.

[0041] It is further evident that an electrical conductor, which is inserted into the contact insert at the clamping point in the conductor insertion direction L, must be inserted into a conductor insertion area E, which is located at least partially between the side walls 51. In this way, the electrical conductor can be inserted between the side walls 51, which also form a guide for the electrical conductor, and utilizes the space between them. The conductor insertion area E can extend relatively far to the rear in the conductor insertion direction, as it is not limited by the connecting section 43 in this direction. This is because the connecting section 43 laterally establishes the connection between the contact leg 44 and the clamping spring.

[0042] The Fig. Figure 5 shows the procedure for inserting the actuating element 5 into the metal part 4. If the actuating element 5 is inserted in the direction of the arrow shown, the contact between the bearing pin 53 and the end section 46, which serves as an insertion aid, and the contact between the actuating contour 54 and the actuating tabs 49, causes the resilient areas of the metal part 4 to be slightly pushed apart. In particular, the clamping leg 40 is deflected downwards. Finally, the actuating element 5 reaches the desired position, where the bearing pin 53 rests in the recess 45 and the bearing recess 52 engages the actuating tab 49 in a form-fitting manner, as shown in the Fig. 6 shows.

[0043] The Fig. Figure 7 shows a conductor terminal 1 in which a contact insert of the type described above is arranged in an insulating housing 2. Since the insulating housing 2 largely surrounds the parts of the contact insert, only, for example, the manual actuation area 50 of the actuating element 5 and parts of the side walls 51 are visible.

[0044] The insulating housing can, for example, be made up of several parts, e.g. with a main housing part 20 and a cover part 21. The cover part 21 is mounted on the main housing part 20 after the contact insert has been mounted in the main housing part 20, e.g. by snapping it into place.

[0045] As the Fig. As already shown in Figure 7, the cover part 21 can have a recess 23. The recess 23 can be used to route a busbar 3 through the cover part 21. Fig. Figure 8 shows that the busbar 3 is connected to the already mounted conductor connection terminal 1, as shown in Fig. Figure 7 shows that it can be retrofitted. For this purpose, the actuating element 5 is pivoted into the open position, in which the manual actuation area projects, for example, vertically upwards from the insulating housing 2. Once the busbar 3 is positioned at the desired location, the manual actuating element 5 can be returned to the closed position, as shown in Figure 7. Fig. Figure 9 shows that the busbar 3 can protrude from the insulating housing 2 to provide an electrical contact point for other electrical elements.

[0046] The Fig. Figure 10 shows the assembly step of the busbar 3 in the conductor terminal 1 in a side view, with parts of the conductor terminal shown in section. The busbar 3 can also have a protrusion 30 that projects from the rest of the surface of the busbar 3 in the direction of the clamping leg 40. This further improves the clamping of an electrical conductor in mechanical and electrical terms.

[0047] It can be seen that the insulating housing 2 can have a conductor entry opening 24 in addition to the elements already described. The electrical conductor can be inserted into the insulating housing 2 through the conductor entry opening 24 in the conductor entry direction L, at least as far as the clamping point.

[0048] It is evident in the Fig. 10. Furthermore, the actuating element 5, in the open position, deflects the clamping leg 40 downwards via the actuating contour 54 and accordingly opens the clamping point. This occurs because the actuating tabs 49 are mechanically actuated via the actuating contour 54. In this state, the bearing recess 52 is not in contact with the clamping spring.

[0049] The Fig. Figure 11 shows the conductor connection terminal 1 according to Fig. 10, when the actuating element 5 is again in the closed position. It can be seen that the clamping tongue with the clamping edge 48 now comes into contact with the raised section 30 of the busbar.

[0050] The Fig. Figure 12 shows a further embodiment of a contact insert, which, apart from the differences described below, corresponds to the embodiment described above. Fig. 12 shows one with the Fig. 3 comparable views.

[0051] In contrast to the previously described embodiment, in the Fig. 12. There is no single, integrally formed metal part 4. Instead, the metal part 4 is formed as two separate metal parts that are connected to each other in the area 60. For this purpose, the metal part containing the clamping spring 40, 41, 42 has a fastening tab 61. The metal part containing the contact leg 44 has a fastening tab 62. The fastening tabs 61, 62 overlap each other. The two separate metal parts are connected to form a single assembly via this overlap area of ​​the fastening tabs 61, 62, e.g., by a detachable or permanent connection.

[0052] The in Fig.The embodiment shown in Figure 12, with several metal parts connected to one another, can also be designed differently. For example, the described overlap between the fastening tabs 61, 62 can also be realized in the area of ​​the contact leg 42, the connecting section 43, or the contact leg 44. Several such overlap points can also be present, so that the resulting assembled metal part can consist of more than two individual metal parts. Reference symbol list: 1 conductor connection terminal 2 insulating housings 3 Power rail 4 metal parts 5 Actuating element 20 Main housing part 21 Lid part 23 recess 24 conductor entry opening 30 Survey 40, 41, 42 Clamping spring 40 clamping legs 41 Feather Bows 42 contact legs 43 Connecting section 44 attachment legs 45 Bulge 46 Final section 47 Clamping tongue 48 clamping edge 49 Actuating tab 50 Area of ​​operation 51 side panels 52 storage trough 53 storage pins 54 Actuation contour 55 axle stubs 60 Area of ​​the metal part 61 Mounting tab 62 Mounting tab E conductor entry area L conductor entry direction

Claims

[1] Contact insert of a conductor terminal (1) with spring clamping technology, wherein the contact insert has a clamping spring (40, 41, 42) and a manual actuating element (5), wherein the clamping spring (40, 41, 42) has a clamping leg (40) which is configured to clamp an electrical conductor at a clamping point, wherein the clamping point can be opened by the manual actuating element (5), having the following features: a) the contact insert has one or more metal parts (4), b) the clamping spring (40, 41, 42) is formed in one piece on a metal part (4), c) A contact leg (44) is formed in one piece on a metal part (4) which is opposite the clamping leg (40), so that the clamping point for the electrical conductor can be arranged between the clamping leg (40) and the contact leg (44), d) the actuating element (5) is movably mounted between the clamping leg (40) and the mounting leg (44), characterized by , that the actuating element (5) is clamped at least one of the bearing pins (53) of the actuating element (5) between the clamping leg (40) and the support leg (44). [2] Contact insert according to claim 1, characterized by that the contact deployment is designed as a self-supporting contact deployment. [3] Contact insert according to one of the preceding claims, characterized by , that the metal part (4) has at least one connecting section (43) by which the support leg (44) is directly or indirectly connected to the clamping leg (40). [4] Contact insert according to claim 3, characterized by , that the connecting section (43) forms a guide surface for the electrical conductor to be clamped. [5] Contact insert according to one of the preceding claims, characterized by, that the bearing pin (53) rests against the mounting leg (44). [6] Contact insert according to claim 5, characterized by , that the mounting leg (44) has a bulge (45) at or near its free end, which is opposite the clamping leg (40), which forms a receptacle for the bearing pin (53) of the actuating element (5). [7] Contact insert according to claim 6, characterized by , that the mounting leg (44) extends beyond the bulge (45) with an end section (46) to its free end, the end section (46) being an insertion aid for the bearing pin (53) during the assembly of the actuating element (5) on [8] Contact insert according to one of the preceding claims, characterized by, that the actuating element (5) has a manual actuation area (50) at which the actuating element (5) is to be manually actuated to open the clamping point, wherein two spaced-apart side cheeks (51) of the actuating element (5) project from the manual actuation area (50), and that the contact leg (44) is located between the side cheeks (51) [9] Contact insert according to claim 8, characterized by , that the bearing pin (53) extends from one side cheek (51) to the other side cheek (51). [10] Contact insert according to one of claims 8 to 9, characterized by , that the contact insert has a conductor entry area (E) into which the electrical conductor to be clamped is to be inserted, wherein the conductor entry area (E) extends through the area enclosed by the side cheeks (51). [11] Contact insert according to one of the preceding claims, characterized by, that the clamping leg (40) has a clamping tongue (47) on which a clamping edge (48) is arranged for clamping the electrical conductor, wherein the clamping leg (40) has at least one or two actuating tabs (49) which are arranged laterally next to the clamping tongue (47), wherein the at least one or two actuating tabs (49) each form actuating surfaces for a mechanical actuation by the actuating element (5) to open the clamping point. [12] Contact insert according to claim 11, characterized by , that at least one or two actuating tabs (49) simultaneously form a counter bearing against the bearing of the actuating element (5) on the mounting leg (44). [13] Contact insert according to claim 11 or 12, characterized by , that at least one or two actuating tabs (49) are bent in the same direction as the bulge (45) of the mounting leg (44). [14] Contact insert according to one of claims 11 to 13, characterized by , that the actuating element (5) has a bearing recess (52) on one or both side cheeks (51), wherein the actuating element (5) in the closed position is supported on a respective actuating tab (49) via a respective bearing recess (52), wherein the shape of the bearing recess (52) is adapted to the shape of the respective actuating tab (49). [15] Contact insert according to one of claims 11 to 14, characterized by , that the actuating element (5) has on one or both side cheeks (51) an actuating contour (54) for actuating an associated actuating tab (49) and accordingly for deflecting the clamping leg (40), wherein the actuating contour (54) comes into contact with the associated actuating tab (49) when the actuating element (5) is in the open position or is moved from the closed position to the open position. [16] Contact insert according to one of the preceding claims, characterized by , that the contact insert has as a further component a busbar (3) which extends between the mounting leg (44) and the clamping leg (40), wherein the busbar (3) rests with one mounting side on the mounting leg (44) and with one contact side opposite the mounting side together with the clamping leg (40) forms the clamping point for the electrical conductor. [17] Contact insert of a conductor terminal (1) with spring clamping technology, wherein the contact insert has a clamping spring (40, 41, 42) and a manual actuating element (5), wherein the clamping spring (40, 41, 42) has a clamping leg (40) which is configured to clamp an electrical conductor at a clamping point, wherein the clamping point can be opened by the manual actuating element (5), having the following features: a) the contact insert has one or more metal parts (4), b) the clamping spring (40, 41, 42) is formed in one piece on a metal part (4), c) A contact leg (44) is formed in one piece on a metal part (4) which is opposite the clamping leg (40), so that the clamping point for the electrical conductor can be arranged between the clamping leg (40) and the contact leg (44), d) the actuating element (5) is movably mounted between the clamping leg (40) and the mounting leg (44), characterized by , that the actuating element (5) has at least one bearing pin (53) which rests against the mounting leg (44). [18] Conductor terminal (1) with an insulating housing (2) and at least one contact insert arranged wholly or partially in the insulating housing (2) according to one of the preceding claims. [19] Conductor terminal according to claim 18, characterized by, that the busbar (3) can be inserted into the contact insert through a recess (23) in the insulating housing (2).

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