conductor connection terminal

Abstract

A conductor connection terminal (1) with an insulating housing (2) and a spring-loaded clamp connection (3) is described, which has a busbar (4) and a clamping spring (5). The clamping spring (5) has a clamping leg (6) with a clamping edge (21) for clamping an electrical conductor to the busbar (4), a contact leg (15) on which the clamping spring (5) is supported, and a spring bend (18) that connects the contact leg (15) to the clamping leg (6). The clamping leg (6), together with the busbar (4), forms a clamping point for clamping an electrical conductor between the clamping leg (6) and the busbar (4). The insulating housing (2) has a conductor insertion opening (7) for inserting an electrical conductor to the clamping point and an actuating channel (10) leading to the clamping spring (5).An actuating push button (11) is arranged displaceably in the actuating channel (10), wherein the actuating push button (11) has an actuating sleeve (13) which encompasses the spring arch (18) and which is designed to open the clamping point by pivoting the clamping leg (6) in the direction of the contact leg (15) by displacing the actuating sleeve (13) along the clamping leg (6) and the contact leg (15) in the direction of the longitudinal extent (LB) of the actuating channel (10).

Description

The invention relates to a conductor connection terminal with an insulating material housing and a spring force terminal connection. The spring force clamping connection has a busbar and a clamping spring, wherein the clamping spring has a clamping leg with a clamping edge for clamping an electrical conductor to the busbar, a contact leg on which the clamping spring is mounted, and a spring bend which connects the contact leg to the clamping leg. The clamping leg forms together with the busbar a clamping point for clamping an electrical conductor between the clamping leg and the busbar. The insulating material housing has a conductor insertion opening for inserting an electrical conductor to the clamping point and an actuation channel leading to the clamping spring.Spring force clamping connections serve for clamping an electrical conductor to a clamping point which is formed between the clamping limb of a clamping spring and a busbar. For clamping the electrical conductor, the clamping spring can be pressed away from the busbar by the electrical conductor against the force of the clamping spring during direct connection. This is possible for rigid conductors, but not for multi-wire conductors or stranded conductors.There is a need for clamping electrical conductors to provide a spring force clamping connection in a self-holding manner in an open position. It is often desired that conductor connection terminals are delivered at the factory with the spring force clamping terminal open.DE 10 2020 119 373 A1 discloses a conductor connection terminal having an insulating material housing which has a conductor insertion opening for receiving an electrical conductor in a conductor insertion direction, having a busbar section, and having a clamping spring. The clamping spring has a clamping leg which forms a clamping point for the electrical conductor with the busbar section, wherein the clamping leg can be latched to the conductor connection terminal in an open position of the clamping point. The clamping spring has a contact limb which has a fastening portion which is designed to fasten the clamping spring to the busbar portion, a holding portion which is designed to hold the clamping limb in the open position of the clamping point, and a releasing portion which is designed to release the latching of the clamping limb when the clamping point is in the open position.DE 20 2011 051 466 U1 discloses a clamping spring for a connection terminal with a clamping leg which merges into a first clamping device (i.e. a spring arch), which is adjoined by a base leg and, after a second clamping device, by a latching leg. The locking leg has projections projecting from the plane of the locking leg, which form a stop for the clamping edge of the opened clamping leg when the clamping leg is displaced against the spring force towards the base leg.WO 2021 / 105280 A1 discloses a direct plug-in terminal for connecting an electrical conductor to a busbar and a clamping spring acting as a compression spring and a retaining spring for latching the clamping spring in an open position.Proceeding from this, it is an object of the present invention to provide an improved spring force clamping connection and a conductor connection terminal having such a spring force clamping connection.The object is achieved with the conductor connection terminal having the features of claim 1. Advantageous embodiments are described in the dependent claims.It is proposed that an actuating presser is arranged displaceably in the actuating opening, wherein the actuating presser has an actuating sleeve which encloses the spring bend and is designed for opening the clamping point by pivoting the clamping limb in the direction of the contact limb by displacement of the actuating sleeve along the clamping limb and of the contact limb in the direction of the longitudinal extent of the actuating channel.This creates a space-saving construction for actuating the clamping leg by an actuating sleeve which completely or partially surrounds the circumference of the spring bow and is mounted on the clamping leg on the one hand and on the rear side of the contact leg on the other hand. As a result, the inner wall of the insulating housing adjoining the clamping limb is not required as a counter bearing, which would require significantly more space and displaces the actuating pusher in the direction of the conductor insertion opening. With the actuating sleeve, the freely available space above the spring bow can be used for the actuating pusher.The term "comprise" is to be understood in the sense of partially enclosing or fully enclosing. It is decisive that the actuating sleeve bears on the one hand on the clamping limb and on the other hand on the bearing limb and that the distance between the bearing points is predetermined by the actuating sleeve. As a result, the clamping leg which protrudes obliquely from the spring curve relative to the direction of extent of the contact leg is pivoted in the direction of the contact leg when the actuating sleeve is displaced, in order to displace the clamping leg towards the contact leg in accordance with the width of the actuating sleeve. It is sufficient if the sleeve has two (wall) sections lying opposite one another in the region of the clamping spring, which rest against the clamping and contact limb and are connected to one another, so that their spacing remains fixed. In a straight embodiment, the distance is the same over the effectively acting actuation length of the actuation sleeve. An embodiment with a distance between the contact points on the clamping leg and contact leg varying over the effective actuation length of the actuation sleeve is also conceivable, which distance can be adapted to a curved shape of the clamping leg, for example.The actuating element can be multi-part. It can be formed from a pusher head part made of insulating material and an actuating sleeve formed as a sheet metal part or fiber composite part, wherein the actuating sleeve is coupled to the pusher head part. This can be done by a direct connection or by an indirect coupling, in which a, for example, pivotable pusher head part interacts via a mechanism with the actuating sleeve acting as a displaceable pusher on the clamping spring.The sheet metal part forms a metallic sleeve which can be designed, for example, as a stamped and bent part with a separating slot (not fully closed). The fiber composite part can be formed, for example, from glass fiber composite material, carbon fiber composite material or the like. The connection between the pusher head part and the actuating sleeve can be positive locking, frictional locking and / or materially integral.Alternatively, it is conceivable that the actuating element is one-piece. In this case, the actuating sleeve can be formed from a fiber composite part and a pusher head part can be formed on the actuating sleeve.The actuating sleeve should be sufficiently thin and stable, which can also be achieved with a fiber composite. It is conceivable to configure the actuating sleeve as a multi-component part, wherein the pusher head part can be formed from a simple electrically insulating plastic and the actuating sleeve from a more stable, for example fiber-reinforced plastic material. However, the actuating sleeve can also be realized as a one-component part entirely from more stable plastic material, such as, for example, from an electrically insulating fiber composite material, e.g., glass fiber composite material.The spring force clamping connection can have a latching contour which is designed for latching the clamping leg deflected towards the contact leg counter to the spring force of the clamping spring in a holding open position.The contact leg can be adjoined by a holding leg which has the latching contour which is designed for latching the clamping leg deflected towards the contact leg counter to the spring force of the clamping spring in a holding-open position.The holding leg can be formed on the contact leg in a spring-elastic manner.A multipart embodiment with a configuration of the holding leg separate from the contact leg is also conceivable.The term "integrally formed" is to be understood in this sense such that the holding leg can be formed integrally (integrally) with the contact leg or can be connected to the contact leg as a separate part.The holding leg can have a release region, wherein the release region is configured to be elastically deflected counter to the spring force of the holding leg by an electrical conductor inserted for clamping to the busbar and thereby to move the latching contour away from the clamping leg and to unlatch the clamping leg latched in the hold-open position.The release region can form an emerging free end of the clamping spring.The release region can extend transversely to the clamping leg latched to the holding leg in the open holding position.The conductor insertion opening can be opened toward the holding leg and be oriented such that an electrical conductor inserted into the conductor insertion opening comes into contact with the holding leg and displaces the latter for disengaging the clamping leg which is latched to the latching contour in the open holding position.At least one latching tab can protrude from the holding leg in the direction of the spring bow, wherein the latching tab forms the latching contour for latching the free end region of the clamping leg.For this purpose, it is conceivable for two latching tabs arranged laterally on mutually opposite longitudinal edges of the holding limb to be present.A free end is to be understood as the terminating end, to which no further section is connected any longer. The terminating end of the clamping leg is freely movable in this sense and forms the end of the clamping leg at which the clamping leg terminates at the free end opposite the spring arch.The clamping leg can be tapered to form a locking edge. The retaining leg can have a hook end bent towards the spring bow, which engages around the latching edge in the hold-open position.The clamping leg can be tapered to form two latching edges at the side edge regions of the clamping leg. The holding leg can have two holding arms spaced apart from one another, each with a hook end bent towards the spring arch, which each engage around one of the latching edges in the holding open position.The busbar can have a side surface, a support surface projecting transversely from the side surface for the bearing leg of the leg spring resting thereon, and a clamping surface spaced apart therefrom, having a clamping edge which forms the clamping point for clamping an electrical conductor, wherein the clamping leg is aligned resiliently towards the clamping edge.The busbar can have a side surface on only one side and, in the region of the interspace between the bearing surface and the clamping surface, can furthermore be bounded only by the side surface.The busbar can have a conductor through-opening bounded by a collar, wherein the side surface is formed from a collar side wall, the bearing surface from a first collar end wall, and the clamping surface with the clamping edge is formed on a second collar end wall opposite the first collar end wall.In the context of this application, the words "a / an", unless expressly defined otherwise, are not to be understood as a numerical word, but rather as an indeterminate article having the word sense of "at least one / one".The invention allows various embodiments and is described in more detail below by way of example with reference to an exemplary embodiment. The following are shown: FIG. 1 shows a perspective view of a conductor connection terminal in the closed clamping position; FIG. 2 is a side view of the conductor connection terminal from FIG. 1 ; FIG. 3 is a side sectional view of the conductor connection terminal from FIG. 2 with a first embodiment of a clamping spring in the closed clamping position; FIG. 4 is a side sectional view of the conductor connection terminal from FIG. 3 in the hold-open position; FIG. 5 is a perspective view of a conductor terminal in the hold-open position; FIG. 6 is a front perspective view of the spring force clamping terminal with the first embodiment of the clamping spring in the closed clamping position; FIG. 7 is a rear perspective view of the spring force clamping terminal of FIG. 6 in the closed clamping position; FIG. 8 shows a perspective front view of the spring force terminal connection of the conductor terminal with the actuating sleeve plugged on in the closed clamping position; FIG. 9 shows a perspective rear side view of the spring force clamping connection of the conductor connection clamp with the actuating sleeve plugged on in the closed clamping position; FIG. 10 is a front perspective view of the first embodiment of the clamping spring; FIG. 11 is a rear perspective view of the first embodiment of the clamping spring; FIG. 12 is a front perspective view of the spring force clamping terminal with a second embodiment of the clamping spring in the closed hold-open position; FIG. 13 is a rear perspective view of the second embodiment of the clamping spring; FIG. 14 is an exploded perspective view of a multi-part actuating trigger with actuating sleeve and trigger head part; FIG. 15 is a front perspective view of the right side of the bus bar for the spring force clamping terminal; FIG. 16 is a front perspective view of the left side of the bus bar for the spring force clamping terminal; FIG. 17 is a rear side perspective view of the left side of the bus bar for the spring force clamping terminal; FIG. 18 is a plan view of the conductor connection terminal.FIG. 1 shows a perspective view of a conductor connection terminal 1 in the closed clamping position. The conductor terminal 1 has an insulating housing 2 and a spring force terminal 3 in the insulating housing 2, and the spring force terminal 3 has a bus bar 4 and a clamping spring 5 and is configured to clamp an electric conductor to the bus bar 4. For this purpose, a clamping leg 6 of the clamping spring 5 exerts a spring force on the stripped conductor end of the electrical conductor and presses it against the busbar 4.The insulating material housing 2 has a conductor insertion opening 7, which is bounded at least partially circumferentially by guide walls and leads in the manner of a conductor insertion channel to the clamping point. The conductor insertion opening 7 opens toward the busbar 4.The busbar 4 can have a conductor through-opening 8, as shown. The conductor insertion opening 7 opens out toward the upper side of the busbar 4 toward the conductor through-opening 8. On the underside of the busbar 4, a conductor collecting pocket 9 is present in the insulating material housing 2. An electric conductor to be clamped can be inserted into the conductor receiving pocket 9 in the conductor insertion direction L, which is predetermined by the extension direction of the conductor insertion opening 7.The insulating housing 2 also has an actuating channel 10 next to the conductor passage opening 7. An actuating presser 11 is installed in this actuating channel 10 so as to be displaceable in the direction of the longitudinal extent LB of the actuating channel 10 toward the busbar 4.The operation trigger 11 includes a trigger head part 12 and an operation sleeve 13. The clamping spring 5 is inserted into the actuating sleeve 13, i.e. a spring curve of the clamping spring 5, which cannot be seen, is encompassed by the actuating sleeve 13. The actuating sleeve 13 abuts against a non-visible contact leg and the clamping leg 6 of the clamping spring in order to displace the clamping leg 6 during the displacement of the actuating presser 11.A release region 14 of a holding leg of the clamping spring 5 is positioned in the conductor collecting pocket 8 in alignment with the conductor insertion opening 7, so that an inserted electrical conductor impinges on the release region 14.FIG. 2 shows a side view of the conductor connection terminal 1 from FIG. 1.It can be seen that the clamping spring 5 extends with its clamping leg 6 and a contact leg 15 into the conductor plug-through opening 8 of the busbar 4. The contact leg 15 is mounted on the busbar 4. A holding leg 16 adjoins the contact leg 15. The holding leg 16 extends after a spring-elastic first bend B 1 on the underside of the busbar 4 towards the alignment F (compare FIG. 3 ) of the conductor insertion opening 7 and projects after a further, second bend B 2 into the conductor collection pocket 9. In this case, a release region 14 is set "transversely" in the widest sense into the alignment F, so that electrical conductor inserted into the conductor insertion opening 7 impinges on the release region 14.It can be seen that a latching contour 17 in the form of a latching tab protruding toward the busbar 4 protrudes at the second bend B 2. The latching contour 17 at the second bend B 2 is located at the location of the holding leg 16 at which the bend facing away from the busbar 4 is bent into the conductor collection pocket 9.FIG. 3 shows a side sectional view of the conductor connection terminal 1 from FIG. 2 with a first embodiment of the clamping spring 5 in the closed clamping position.It can be seen that a spring bend 18 connects the clamping leg 6 to the contact leg 15. The clamping leg 6 and the contact leg 15 enter the conductor plug-through opening 8, wherein the contact leg 15 can be mounted on an end wall of the conductor plug-through opening 8. The contact leg 15 merges at the underside of the busbar 4 after mounting into the holding leg 16, which extends back again with the first bend B 1 along the underside of the busbar 4 with a bend B 1 initially away from the clamping leg 6. Following the alignment of the extension of the contact leg 15, the further, second bend B 2 follows away from the busbar 4 into the conductor collection pocket 9. The holding leg 16 terminates with a release area 14 extending into the alignment with the conductor insertion opening 7. At the second bend B 2, the latching contour is made free of the sheet metal material in the form of a latching tab and bent so as to protrude toward the busbar 4.The busbar 4 has a clamping surface 19 which is bent downward into the conductor collecting pocket 9 from the plane spanned by the conductor plug-through opening 8, which clamping surface can be designed as a material tab which is exposed and bent from the busbar 4. The clamping surface 19 is inclined toward the alignment F and has a protruding clamping edge 20.The actuating sleeve 13 is placed on the clamping spring 5 and comprises the spring bend 18 at least partially circumferentially. The actuating sleeve 13 is inserted into the pusher head part 12 formed from an insulating material, which projects upwards from the insulating housing 2 or is at least accessible from above. It can be seen that the actuating sleeve 13 has a guide tab 22 resting on the surface of the spring bow 18 in the transition to the clamping limb 6 or on the surface of the clamping limb 6. The guide tab 22 is bent out of the plane of the adjoining bearing wall 23 of the actuating sleeve 13, which extends in the longitudinal extension LB of the actuating channel 10, and points to the conductor insertion opening 7.FIG. 4 shows a side sectional view of the conductor connection terminal 1 from FIG. 3 in the hold-open position.The clamping spring 5 dips with its clamping leg 6 and contact leg 15 into the conductor plug-through opening 8 of the busbar 4 and is mounted on a bearing surface A of the busbar 4.It can be seen that the actuating element 11 is displaced in the direction of the longitudinal extent LB of the actuating channel 10 into the insulating material housing 2. The actuating sleeve 13 is pushed further onto the clamping spring 5 so that the actuating element 11 abuts on the one hand on the contact leg 15 and on the other hand on the clamping leg 6 and accommodates portions thereof in the interior space surrounded by the actuating sleeve 13. Due to the reduced intermediate space compared to the deflection of the clamping spring 5 in the closed clamping position, the clamping leg 6 is displaced toward the contact leg 15 into the open position when the actuating sleeve 13 is pushed further onto the clamping spring 5 and an ever larger portion of the clamping spring 5 is surrounded by the actuating sleeve 13, starting from the spring arch 18.In the hold-open position, the latching contour 17 lies between the clamping surface 19 and the free end of the clamping limb 6, which has the clamping edge 21. The latching contour 17 thus forms a stop for the clamping leg 6 and prevents a springback of the clamping leg 6 which is induced per se by the restoring force of the clamping spring 5. The restoring force of the clamping spring 5 acts on the actuating sleeve 13 and exerts a force on the actuating sleeve 13, by means of which such a displacement of the actuating element 11 upwards is forced. This return is promoted by the curved configuration of the clamping limb 6 in the region surrounded by the actuating sleeve 13 and the guide tab 22.If an electrical conductor is now inserted into the conductor insertion opening in the conductor insertion direction L and is inserted through the conductor insertion opening 8 into the conductor collection pocket 9, the end face of the electrical conductor strikes with its free end against the release surface 14, which is in alignment F. The spring-elastic holding leg 16 is thus displaced away from the busbar 4 by the release force acting in the conductor insertion direction L, so that the latching contour 17 is likewise displaced. This has the result that the stop for the clamping leg 6, formed by the latching contour 17, is lifted and the clamping leg can spring back towards the clamping surface 19 due to the restoring force of the clamping spring 5.FIG. 5 shows a perspective view of a conductor connection terminal 1 in the hold-open position.It can be seen that the actuating element 11 is displaced into the interior of the insulating housing 2.In the exemplary embodiment shown, the busbar 4 is formed from a metal sheet bent in an L-shape. From the upper side in which the conductor through-hole 8 is formed, a side surface 24 is bent. This creates a guide wall for the inserted electrical conductor.FIG. 6 shows a perspective front view of the spring force clamping connection 3 with the first embodiment of the clamping spring 5 in the closed clamping position.It can be seen that the contact leg 15 rests on the upper side 25 of the busbar 15 and is inserted with a narrower section adjoining it into a depression 26 of the busbar 4. The contact limb 15 is thus mounted on the support surface A formed by the upper side 25 and the end wall of the depression 26 and connected in a positive-locking manner to the busbar 4. A stabilizing tab 27 is bent from the side surface 24 adjacent to the clamping surface 19, which tab engages behind the clamping surface 19 and reinforces the structure of the busbar 4.FIG. 7 shows a perspective rear view of the spring force clamping connection 3 from FIG. 6 in the closed clamping position.It is clear that the free end of the clamping leg 6 bears against the clamping surface 19 which is set out obliquely with respect to the clamping leg 6. It can also be seen that the release region 14 projects below the conductor plug-through opening 8 and forms the free end of the holding leg 16.The contact leg 15 rests with the end edge formed in the transition from the narrow section to the wider section on the upper side 25 of the busbar 4, which thus provides a bearing surface A for the clamping spring 5 at this point.FIG. 8 shows a perspective front view of the spring force clamping connection 3 with the actuating sleeve 13 plugged on in the closed clamping position.It is clear that the actuating sleeve 13 is formed from a sheet metal part which is bent over 360° with four 90° bends. A gap 28 may be present, so that the two abutting ends are not connected to each other, for example by soldering or welding. The clamping spring 5 protrudes with its spring bend 18 into the interior of the actuating sleeve 13 and is encompassed by it.The actuating sleeve 13 has protruding receiving lugs 29 for receiving the pusher head part 12, which can optionally have latching lugs 30 for the positive fastening of the pusher head part 12. Alternatively, the print head part 12 can also be injection-molded onto the actuating sleeve 13, so that the receiving tabs 29 are surrounded by the plastic material of the trigger head part 29.FIG. 9 shows a perspective rear view of the spring force clamping connection 3 with the actuating sleeve 13 plugged on in the closed clamping position.It is clear that the clamping spring 5 dips at least with a part of the spring bend 18 into the interior of the actuating sleeve 13, which therefore comprises the spring bend 18 at least partially circumferentially.If the actuating sleeve 13 is displaced along the clamping spring 5 in the direction of the busbar 4 in order to open the clamping spring 5, then, as a result of the 360° enclosure shown, the clamping limb 6 on the one side and the contact limb 15 on the other side bear against the mutually opposite inner walls of the actuating sleeve 13. Since the distance is fixed by the transverse connection of the mutually opposite inner walls, the clamping limb 6 is deflected towards the contact limb 15. A displacement of the clamping spring 5 as a whole is prevented by positively locking mounting of the clamping spring 5 on the busbar 4. This can be achieved, for example, by the bearing surface A shown, which is formed by the upper side 25 of the busbar 4 and serves as a bearing for the bearing limb 15 in the transition to the tapering of the bearing limb 15.The mutual contact of clamping leg 6 and contact leg 15 on the dimensionally stable interior of the actuating sleeve 13 functionally leads to a surround, even if a gap 28 of greater or lesser size can be present on at least one of the contact sides.FIG. 10 is a front perspective view and FIG. 11 is a rear perspective view of the first embodiment of the clamp spring 5.It is clear that the clamping spring 5 is designed as a leg spring with a clamping leg 6 and a contact leg 15, which is formed by a spring bow 18. The clamping leg 6 can taper in the transition to the spring bend 18, as shown, in order to thereby obtain a reduced width for immersion in a conductor plug-through opening 8. The clamping leg 6 can, however, also initially continue from the spring bow 18 with a constant width and may not taper at all or at some other point below. The clamping leg 6 can extend straight on a plane or, as illustrated by way of example, can have curvatures in its course.The contact limb 15 can taper, as illustrated, in the transition to the section which dips into a conductor plug-through opening 8 and optionally trough 26 of the busbar 4. The transition from the wider section to the narrower section forms a latching edge on the lower end sides of the transition jump, which is used as a bearing of the clamping spring 5 for bearing on the upper side 25 of the busbar 4.The contact limb 15 is adjoined by a holding limb 16 which initially extends at an angle away from the plane which is spanned by the wider portion of the contact limb 15. This is followed by a first bend B 1, which leads the holding leg 16 back again to the plane of the contact leg 15 or to the clamping leg 6. The holding leg 16 can be divided at least in the region of the first bend by at least one gap into a plurality of, for example two, parallel webs and can thus be reduced in cross section. The spring elasticity of the holding leg 16 can thus be predefined as required. The holding leg 16 extends with a second bend B 2 downwards away from the busbar 4 and then, after a further bend, merges into a release surface 14 which forms the free end of the holding leg 16.In the region of the second bend, a latching contour 17 in the form of a latching tab is exposed. The latching tab 17 is oriented in the opposite direction to the clamping limb 6 and is designed such that it forms a stop for the free end of the clamping limb 6 in the kept open position which is displaced towards the contact limb 15. For this purpose, the latching tab 17 can, if required, protrude beyond the plane which is spanned by the horizontal section of the holding leg 16 in the transition region from the first bend B 1 to the second bend B 2.FIG. 12 shows a perspective front view of the spring force clamping connection 3 with a second embodiment of the clamping spring 5 in the hold-open position.Holding legs 16 in the form of holding arms 31 are bent from the contact leg 15 from the wider section above the busbar 4 before the contact leg 15 dips into the conductor plug-through opening 8. Holding arms 31 can be provided on both sides. The at least one holding arm 31 has a latching contour 17, which is formed in each case from a hook end 32 which is bent away from the busbar 4 upwards towards the spring bend 18. The clamping leg 6 forms at least one latching edge 33 at the transition from the wide to the narrow section. In the hold-open position, the holding arm 31 is guided through under the latching edge 33, so that the hook end 32 forms a stop for the clamping leg 6 in the region of the latching edge 33 and latches the latter in the hold-open position.It can be seen that the clamping leg 5 springs out against the hook ends 31 by the restoring force of the clamping spring 5 and thus presses against the hook ends 32.FIG. 13 is a rear perspective view of the second embodiment of the clamp spring 5.The holding arms 31 have holding noses 34 projecting toward the contact leg 15 which, in cooperation with a disengaging contour 35 on the side edges of the contact leg 15, cause the clamping leg 6 to disengage, i.e. to cancel the stop formed by the hook ends 32, when the release surface 14 connected to the contact leg 15 is displaced.FIG. 14 shows a perspective exploded view of a multipart actuating trigger 11 with actuating sleeve 13 and trigger head part 12, It becomes clear that the trigger head part 12, which is designed, for example, as a plastic injection-molded part, can be placed on the receiving lugs 19 of the actuating sleeve 13 and connected thereto in a positive-locking manner by the latching lugs 30.The pusher head part 12 can have on its upper side a tool holding contour 35, for example in the form of a groove, into which an actuating tool can be inserted. When the free end of a screwdriver is placed on, it dips into the tool holding contour 35 and slipping off is thus prevented.The actuating sleeve 13 is formed from a sheet metal material by four bends into a hollow body. The contact wall 23 for the contact of the clamping limb 6 is preferably closed, while the actuating sleeve 13 can have a gap 18 on the opposite contact limb contact wall 36. This side can optionally be further reinforced by the ends of the sheet metal part facing each other being connected to each other in a form-fitting and / or materially integral manner.FIGS. 15 to 17 show a front perspective view on the right and left sides and a rear perspective view on the left side of the bus bar 4 for the spring force clamping terminal 3.It can be seen that the conductor plug-through opening 8 is introduced on the upper side 25 of the L-shaped busbar, said conductor plug-through opening having a depression 26 (depression). The end wall of the depression 26 extending in the width direction and the region of the upper side 25 lying next to the depression 26 form a bearing surface A on which the bearing limb 15 is mounted.Opposite the depression 26, the clamping surface 19 is bent obliquely downward in the form of a flap of material out of the plane of the upper side 25. On the clamping surface 19 there is a clamping edge 20 pointing towards the trough 26, which is introduced into alignment with the conductor through-opening 8 by the oblique position of the clamping surface 19.The conductor plug-through opening is bounded by a side surface 24 which can have an edge region which projects straight upward in the region of the conductor plug-through opening. The transition from the upper side 25 to the side surface 24 can otherwise be effected by a curved bend, as illustrated.It can be seen that, in addition to the clamping surface 19, a stabilizing tab 27 is bent away from the side surface 24, so that the stabilizing tab 27 is positioned behind the clamping surface 19. In this way, on the one hand, the bending stiffness of the L-shaped busbar 4 can be improved and, on the other hand, a counter bearing for the clamping surface 19 can be formed.FIG. 18 shows a plan view of the conductor connection terminal 1. it can be seen that the insulating material housing 2 has the conductor insertion opening 7 and the actuating channel 10 lying next to it, which both extend into the interior of the insulating material housing 2. The actuating presser 11 is slidably received in the actuating channel 10. It can be seen that the pusher head part 12 with its tool holding contour 35 is accessible from the outside of the insulating material housing 2.List of reference characters1 Conductor connection terminal 2 Insulating material housing 3 Spring force clamping connection 4 Busbar 5 Clamping spring 6 Clamping limb 7 Conductor insertion opening 8 Conductor through opening 9 Conductor collecting pocket 10 Actuating channel 11 Actuating pusher 12 Pusher head part 13 Actuating sleeve 14 Release region 15 Contact limb 16 Retaining limb 17 Latching contour / latching tab 18 Spring bow 19 Clamping surface 20 Clamping edge 21 Clamping edge 22 Guide tab 23 Contact wall 24 Side surface 25 Upper side 26 Depression 27 Stabilizing tab 28 Gap 29 Receiving tab 30 Latching tab 31 Retaining arm 32 Hook end 33 Latching edge 34 Retaining tab 35 Tool retaining contour A Support surface B 1 Bend B 2 Bend F Alignment L Conductor insertion direction LB Longitudinal extent of the actuating channelReferences included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 10 2020 119 373 A1

[0004] DE 20 2011 051 466 U1

[0005] WO 2021 / 105280 A1

[0006]

Claims

Conductor connection terminal (1) having - an insulating material housing (2) and - a spring force clamping terminal (3) which has a busbar (4) and a clamping spring (5), wherein the clamping spring (5) has a clamping limb (6) with a clamping edge (21) for clamping an electrical conductor to the busbar (4), an abutment limb (15) on which the clamping spring (5) is mounted, and a spring bend (18) which connects the abutment limb (15) to the clamping limb (6), wherein the clamping limb (6) together with the busbar (4) forms a clamping point for clamping an electrical conductor between the clamping limb (6) and the busbar (4), and wherein the insulating material housing (2) has a conductor insertion opening (7) for inserting an electrical conductor to the clamping point and an actuation channel (10) leading to the clamping spring (5), characterized in that an actuation presser (11) is arranged displaceably in the actuation channel (10), wherein the actuation presser (11) has an actuation sleeve (13) comprising the spring bend (18), which is designed for opening the clamping point by pivoting the clamping limb (6) in the direction of the contact limb (15) by displacing the actuation sleeve (13) along the clamping limb (6) and the contact limb (15) in the direction of the longitudinal extent (LB) of the actuation channel (10).Conductor connection terminal (1) according to Claim 1, characterized in that the actuating presser (11) is multipart and is formed from a presser head part (12) made of insulating material and an actuating sleeve (13) designed as a sheet metal part or fibre composite part, the actuating sleeve (13) being connected to the presser head part (12).Conductor connection terminal (1) according to Claim 1, characterized in that the actuating presser (11) is in one piece, wherein the actuating sleeve (13) is formed from a fibre composite part and a presser head part (12) is integrally formed on the actuating sleeve (13).Conductor connection terminal (1) according to one of Claims 1 to 3, characterized in that the spring force clamping terminal (3) has a latching contour (17) which is designed for latching the clamping limb (6) which is deflected towards the contact limb (15) counter to the spring force of the clamping spring (5) in a holding-open position.Conductor connection terminal (1) according to Claim 4, characterized in that the contact limb (15) is adjoined by a retaining limb (16) which has the latching contour (17) which is designed for latching the clamping limb (6) deflected towards the contact limb (15) counter to the spring force of the clamping spring (5) in a latching position.Conductor connection terminal (1) according to Claim 5, characterized in that the retaining leg (16) is formed on the bearing leg (15) in a spring-elastic manner.Conductor connection terminal (1) according to Claim 5 or 6, characterized in that the holding limb (16) has a release region (14), wherein the release region (14) is designed to be elastically deflected counter to the spring force of the holding limb (16) by an electrical conductor inserted for clamping to the busbar (4) and as a result to move the latching contour (17) away from the clamping limb (6) and to unlatch the clamping limb (6) latched in the hold-open position.Conductor connection terminal (1) according to claim 7, characterised in that the release region (14) forms an emerging free end of the clamping spring (5).Conductor connection terminal (1) according to claim 7 or 8, characterised in that the release region (14) extends transversely to the clamping leg (6) which is latched to the holding leg (16) in the hold-open position.Conductor connection terminal (1) according to one of Claims 5 to 8, characterized in that the conductor insertion opening (7) is open towards the retaining limb (16) and is aligned in such a way that an electrical conductor inserted into the conductor insertion opening (7) comes into contact with the retaining limb (16) and displaces the latter for disengaging the clamping limb (6) which is locked on the latching contour (17) in the retaining open position.Conductor connection terminal (1) according to one of Claims 5 to 10, characterized in that at least one latching tab (17) projects from the retaining limb (16) in the direction of the spring bend (18), wherein the latching tab forms the latching contour (17) for latching the free end region of the clamping limb (6).Conductor connection terminal (1) according to one of Claims 5 to 10, characterized in that the clamping limb (6) narrows to form a latching edge (33), and the holding limb (16) has a hook end (32) which is bent towards the spring bend (18) and engages around the latching edge (33) in the hold-open position and forms the latching contour (17) for latching the clamping limb (6).Conductor connection terminal (1) according to claim 12, characterised in that the clamping leg (6) narrows to form two latching edges (33) at the side edge regions of the clamping leg (6), and the holding leg (16) has two holding arms (31) spaced apart from one another, each with a hook end (32) bent towards the spring arch (18), which each engage around one of the latching edges (33) in the holding-open position.Conductor connection terminal (1) according to one of the preceding claims, characterized in that the busbar (4) has a side face (24), a bearing face (A) projecting transversely from the side face (24) for the bearing limb (15) of the clamping spring (5) which bears thereon, and a clamping face (19) spaced apart therefrom, having a clamping edge (20) which forms the clamping point together, for clamping an electrical conductor, wherein the clamping limb (6) is aligned resiliently towards the clamping edge (20).Conductor connection terminal (1) according to Claim 14, characterized in that the busbar (4) has a side face (24) on only one side and is furthermore bounded only by the side face (24) in the region of the intermediate space between the bearing face (A) and the clamping face (19).Conductor connection terminal (1) according to Claim 14, characterized in that the busbar (4) has a conductor through-opening (8) bounded by a collar, wherein the side face (24) is formed from a collar side wall, the bearing face (A) from a first collar end wall and the clamping face (19) is formed with the clamping edge (20) on a second collar end wall opposite the first collar end wall.

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