Spring clamp connection, conductor connection terminal and busbar for this purpose

Abstract

A spring-loaded clamping connection (3) with a clamping spring (4) and a busbar (5), wherein an electrical conductor (12) can be clamped to the busbar (5) by means of a clamping leg (7) of the clamping spring (4), wherein the clamping leg (7) is displaceable between a preload position and a clamping position, and wherein the spring-loaded clamping connection (3) has a holding element (10) designed to hold the clamping leg (7) in the preload position, and wherein the spring-loaded clamping connection (3) has a release element (11) designed to trigger a relative movement between the holding element (10) and the clamping leg (7) to release the clamping leg (7) when an inserted conductor (12) acts on the release element (11), characterized in that the spring-loaded clamping connection (3) has an automatic reset element (18) for resetting the holding element (10) and / or the release element (11).

Description

The invention relates to a spring force clamping connection having a clamping spring and a busbar, wherein an electrical conductor can be clamped to the busbar by means of a clamping limb of the clamping spring. The clamping leg is displaceable between a pretensioning position and a clamping position. The spring force clamping connection has a holding means which is designed to hold the clamping limb in the prestressing position. The spring force clamping connection has a triggering means which is configured to trigger a relative movement between the holding means and the clamping limb in order to release the clamping limb in the event of an action of an inserted conductor on the triggering means.The invention further relates to a conductor connection terminal with an insulating material housing and with such a spring force connection terminal in the insulating material housing.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 with open spring force clamping connection are delivered at the factory.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 spring force clamping connection having the features of claim 1 and the conductor connection terminal having the features of claim 22 and the busbar for such a spring force clamping connection having the features of claim 25. Advantageous embodiments are described in the dependent claims.It is proposed that the spring force clamping connection has an automatic restoring element for restoring the holding means and / or the triggering means.This creates a self-actuating spring force clamping connection with a disengagement of the clamping leg by the inserted conductor and a self-actuating return. No manual actuator is required for the return of the holding means and / or the triggering means. The clamping leg can be displaced directly, for example by the electrical conductor itself to be clamped, or indirectly, for example by a restoring mechanism, by the restoring force applied via the inserted conductor. For this purpose, the electrical conductor can actuate a trigger (indirect actuation), for example.The holding means can have a holding contour which engages behind the clamping limb, with the result that the latter is supported against the holding contour in the prestressing position. The triggering means can be configured to displace the holding means from a holding position into a release position or to displace the clamping limb directly from the undercut with the holding contour.The triggering means and / or the holding means can be mounted movably, for example rotatably or translationally movable. The triggering means can be displaced, for example, by the inserted conductor from a rest position into a triggering position in order to trigger the latching of the clamping leg. The clamping leg is released by a position of the clamping leg in relation to the holding means, which enables a displacement into the clamping position, i.e. a pivoting of the clamping leg by the force of the clamping spring. For this purpose, a form fit or stop formed, for example, by an undercut or a rear engagement can be canceled. By releasing the clamping leg, the clamping leg automatically displaces into the clamping position due to the spring force of the clamping spring. The return means can, for example, return the triggering means from the triggering position into the rest position. It is also conceivable for the restoring means to automatically displace the holding means from the release position into the holding position. This can be done without a manual actuator, i.e. without an external actuation. The resetting can be realized, for example, by a mechanical energy store and / or by a mechanical coupling to other movable components of the spring force clamping connection.The spring force clamping connection advantageously does not require any manual resetting of the holding means and / or triggering means. Working steps during the clamping and release of electrical conductors can thus be saved. In addition, the reuse capability of the spring force clamping terminal is improved.The holding means and the triggering means can form a holding element and / or triggering element.The holding and triggering means can form a common component. For this purpose, the two elements can be integrally connected to one another, i.e. formed integrally from a material. The holding and triggering element can be embodied separately from the further components (in particular the clamping spring and the busbar) of the spring-force clamping connection. The holding and triggering element can have a holding section with the holding means and a triggering section with the triggering means. A compact and stable embodiment can thus be realized.The restoring element can be a restoring spring. The return spring can be of the spring type, for example a compression spring or tension spring. The shape of the return spring may be, for example, a coil spring or a V spring.A return spring provides a simple, compact and cost-effective mechanical energy store for the automatic return.The reset element can be connected to the holding means and / or the triggering means. It can be connected directly to the holding means and / or release means, for example via a form-fit and / or force-fit or material-fit connection. A one-piece production of restoring element and holding and triggering means is also conceivable. In a common embodiment as a holding / triggering element, the restoring element can be directly connected thereto or can be functionally realized with the holding and / or triggering means. Alternatively or additionally, the restoring element can be mounted or connected to an adjacent, e.g. opposite, structure. The connection to the structure of one of the other components of the spring force clamping connection (e.g. busbar) is conceivable. However, it is also possible, for example, to mount or connect in or on the insulating material housing of a conductor connection terminal in which the spring force terminal connection is arranged.The restoring element can also bear against the holding means and / or release means without being connected thereto (for example in the case of a compression spring).With such a restoring element, a reliable restoring with a compact design is achieved.The reset element can be mounted on the busbar. For this purpose, the restoring element can be supported on the busbar or connected to the latter. This provides a return without or with reduced force action on the insulating material housing, i.e. a spring force clamping connection which is self-supporting with respect to the return.A stable support of the restoring element is possible in a compact and self-supporting embodiment without restoring forces being transmitted to an insulating material housing.The triggering means may have a stop surface for a conductor end of the electrical conductor.A flat surface of the triggering means can be used as the stop surface, which extends approximately transversely to the conductor insertion direction. The conductor end exerts a compressive force on the stop surface when it hits it, which can displace the triggering means and thereby cause triggering. This allows simple and direct triggering by the inserted conductor.The restoring means can be arranged on a rear side of the triggering means facing away from the stop surface.The stop surface should face the inserted conductor, so that the electrical conductor does not come into contact with the rear side of the triggering means. The restoring means can be connected to the rear side or be supported on the latter.This has the advantage of a direct reversal of movement with respect to the triggering means translationally displaced by the electrical conductor.The spring force clamping connection can have a manual actuating element for displacing the clamping limb or for actuating or resetting the triggering means and / or the holding means.Such an additional actuating element is independent of the restoring element and / or the self-actuating mechanism. The actuating element can be configured to displace the clamping leg into the clamping position or prestressing position or to displace the triggering means into the triggering position for restoring the holding or triggering means into the rest position. A plurality of actuating elements can also be provided for a respective aforementioned function. The actuating element can be designed, for example, as a pivotably mounted actuating lever or linearly displaceable actuating presser.If necessary, the actuating element makes it possible to support the clamping spring actuation and / or the resetting, for example in the case of very small conductor diameters or fine conductor wires electrical conductors to be clamped.The holding means can be designed as a holding cam. This enables a compact embodiment with reliable clamping leg release.The holding cam can have an eccentric holding means shape with a holding means contour, against which the clamping limb can bear. The retaining cam can be displaceable from the retaining position into the release position by a rotation.The triggering means can be designed as a triggering lever. This allows simple and reliable triggering.The triggering lever can be, for example, a strip-shaped beam with a stop surface facing the conductor end, which protrudes into the conductor insertion region at a web. The triggering lever can be translationally displaceable and / or elastically deflectable. The web projecting into the conductor insertion region can be a spring arm, for example, and form the restoring means.The busbar can have a through-opening which is bounded by an opening edge, wherein the conductor can be clamped to the opening edge by means of the clamping spring.The electrical conductor is thus not clamped to a planar busbar piece, but rather to an opening edge of a through opening. The electrical conductor can thus be supplied onto the busbar from different spatial directions and reaches an exactly predefined contact region, onto which the clamping forces of the clamping spring are concentrated. The opening edge forms a defined contact region with good current transfer properties.The opening rim may have a rim collar.The edge collar can be designed as an additional material tab which adjoins the opening edge. The edge collar may protrude at an angle from the region of the busbar that delimits the through-opening (e.g. an angle of approximately 30 to 150°). The edge collar can be formed from an electrically conductive material, e.g. metal sheet. It can be formed integrally with the busbar or, for example, also subsequently inserted into the busbar as a separate metal part. The edge collar can surround the through-opening in sections or completely.With the edge collar, the edge surface of the opening edge can advantageously be enlarged in order to provide an improved contact and contact surface for the conductor to be connected.The through-opening can be produced as a (material) through-passage.Such a rim hole may be a recess made in an essentially planar component. With the passage technique, for example, the material of the busbar displaced from the opening region can be bent at least partially from the opening edge. This allows simple production of the through-opening.The opening edge or the edge collar can be adjoined by a retaining / triggering element, as viewed in the conductor insertion direction.The holding / triggering element can be connected directly to the edge collar, placed on the latter, adjoining the latter or also spaced apart spatially. When it is inserted, an inserted electrical conductor first passes the edge collar and then impinges on the holding / triggering element. The triggering thus takes place only when the electrical conductor to be clamped is inserted sufficiently deeply.The holding / triggering element can be movably mounted on the busbar.It can be translationally movable, for example. The holding / triggering element can be movable, for example, in a guide. It can be displaceable between the rest position and the release position or between the holding position and the release position. In this case, the triggering means can be displaceable into the triggering position and, with the same movement path or movement direction, the holding means can be displaceable into the release position. In particular, with the same movement path or movement direction, the triggering means can be displaced into the rest position and the holding means can be displaced into the holding position. These kinematics allow very simple triggering with reduced space requirements.The holding / releasing element may have a guide portion.The guide section can be designed as a planar, plate-shaped region of the holding / triggering element, which can abut in the insulating material housing of a conductor connection terminal and / or on the busbar (e.g. on an edge collar) and slide along it.The guide section can at the same time also form a guide surface for an inserted electrical conductor and / or for the clamping leg. It can run parallel or at an angle to the conductor insertion direction.Such a guide portion enables a stable and yet movable construction with good component guidance.The holding / release element can have a holding means designed as a holding tab. The retaining tab enables a simple and reliable embodiment of the retaining meansThe retaining tab can be designed as a material tongue which is made out of the retaining / release element and forms a projection against which the clamping limb can be supported in its prestressed position. The retaining tab can be made of a guide section, for example.The holding / triggering element can have a triggering means embodied as a step. This enables a simple and reliable embodiment of the triggering means.The step may be, for example, a step. The step surface can extend transversely or at an angle to the conductor insertion direction. The step may be bent from the guide portion. The step can form a stop surface for the conductor or can have such a stop surface.The holding / triggering element can be designed as a spring element. This allows an integral combination of the functions holding, triggering and resetting.The spring element can be made of spring steel, for exampleThe retaining / triggering element can have a spring arm. This enables a simple and compact implementation of a restoring means.The spring arm can be designed, for example, as a web-like or strip-like spring section of a spring element. It can be formed integrally with the retaining / release element. The spring arm can form a restoring means. It can be supported, for example, on the structure of a surrounding insulating housing and / or on the busbar.The spring arm may protrude from the trigger means. This allows a compact and direct resetting of the triggering means.The spring arm can protrude from a step, for example, via a spring curve.The conductor connection terminal has an insulating material housing in which the spring force terminal connection is accommodated.The reset means of the spring force clamping connection can be mounted on the insulating material housing.The busbar for an above-described spring force clamping connection can have a through opening with an opening edge delimiting the through opening, to which opening edge an electrical conductor can be clamped by means of the clamping spring. The busbar can have a holding / triggering element.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 is a side view of a first embodiment of a conductor connection terminal in the locked open position; FIG. 2 is a plan view of the conductor connection terminal from FIG. 1 with the section line A-A; FIG. 3 is a side sectional view of the conductor connection terminal from FIG. 1 in the closed clamping position; FIG. 4 is a side sectional view of the conductor connection terminal from FIG. 1 in the actuated open position; FIG. 5 shows a side sectional view of the conductor connection terminal from FIG. 1 in the locked open position with an inserted electrical conductor; FIG. 6 is a side sectional view of the spring force terminal terminal of the conductor terminal from FIG. 5 latched in the open position; FIG. 7 is a side sectional view of the spring force clamping connection from FIG. 6 unlocked in the open position; FIG. 8 shows a perspective front view of the spring force clamping connection from FIG. 5 latched in the open position; FIG. 9 shows a perspective detailed view of the spring force clamping connection in FIG. 8 with the latching of the clamping limb; FIG. 10 shows a perspective rear side view of the spring force clamping connection from FIG. 8 latched in the open position; FIG. 11 is a perspective front view of the holding / releasing element of the spring force clamping connection from FIG. 8 ; FIG. 12 shows a perspective rear side view of the holding / releasing element of the spring force clamping connection from FIG. 8 ; FIG. 13 shows a perspective view of the conductor connection terminal with an inserted electrical conductor; FIG. 14 shows a perspective view of a second embodiment of a conductor connection terminal in the locked open position; FIG. 15 shows a side detail view of the conductor connection terminal from FIG. 14 locked in the open position; FIG. 16 shows a perspective view of the spring force clamping connection of the second embodiment from FIG. 14 in the locked open position; FIG. 17 is a perspective view of the holding / releasing element of the spring force clamping terminal from FIG. 16 ; FIG. 18 is a side view of the holding / release element from FIG. 17 ; FIG. 19 shows a perspective view of the conductor connection terminal from FIG. 14 with an inserted electrical conductor in the unlocked clamping position; FIG. 20 shows a side detail view of the conductor connection terminal with an electrical conductor clamped in the clamping position; FIG. 21 shows a perspective view of the spring force clamping connection from FIG. 19 with an electrical conductor clamped in the unlocked clamping position; FIG. 22 shows a perspective view of a fourth embodiment of a conductor connection terminal in the unlocked closed clamping position; FIG. 23 is a perspective view of the conductor terminal of FIG. 22 in the actuated open position; FIG. 24 shows a perspective view of the conductor connection terminal from FIG. 23 in the locked open position; FIG. 25 shows a side sectional view of the conductor connection terminal from FIG. 24 locked in the open position; FIG. 26 is a side sectional view of the conductor connection terminal from FIG. 25 in the unlocked open position; FIG. 27 is a side sectional view of a third embodiment of a conductor connection terminal with actuating lever in the locked open position; FIG. 28 is a side sectional view of the conductor connection terminal from FIG. 27 in the unlocked clamping position; FIG. 29 is a side view of the spring force terminal connection of the conductor terminal from FIG. 27 in the locked open position; FIG. 30 shows a side view of the clamping spring with holding / release element and actuating lever in the locked open position; FIG. 31 shows a perspective rear side view of the spring force terminal connection of the conductor terminal connection from FIG. 27 in the locked open position; FIG. 32 is a perspective front view of the spring force clamping connection from FIG. 31 in the locked open position; FIG. 33 is a rear side view of the spring force clamping terminal of FIG. 31 ; FIG. 34 is a front view of the spring force clamping terminal of FIG. 33 ; FIG. 35 shows a perspective rear side view of the spring force terminal connection of the conductor terminal connection from FIG. 27 with the actuating lever open in the locked open position; FIG. 36 shows a perspective front view of the spring force clamping connection from FIG. 35 with the actuating lever open in the locked open position; FIG. 37 is a perspective front view of the retaining / releasing element for the spring force clamping connection from FIGS. 27 to 36 ; FIG. 38 is a rear perspective view of the retaining / releasing element from FIG. 37.FIG. 1 shows a side view of a first embodiment of a conductor connection terminal 1 in the locked open position. The conductor connection terminal 1 has an insulating material housing 2, in which a spring force terminal connection 3 is installed. The spring force clamping connection 3 has a clamping spring 4 and a busbar 5.The spring force clamping connection 3 has a holding / triggering element 9 with a holding means 10, which is designed to hold the clamping limb 7 in the illustrated prestressing position, and with a triggering means 11, which is designed to trigger a relative movement between the holding means 10 and the clamping limb 7 in order to release the clamping limb 7 when an inserted conductor 12 acts on the triggering means 11.The holding means 10 is designed as a holding tab which projects from the plane of a side web 13 which is arranged above the busbar 5 as viewed in the conductor insertion direction L. The side web 13 is mounted on the busbar 5 at its first end 14, which is remote from the clamping spring 4 and the holding means 10.From the side web 13, a guide wall 16 projects at the second end region 15 adjacent to the holding means 10 into a conductor collecting pocket 17 of the insulating material housing 2 arranged below the busbar 5. The guide wall 16 has at its end facing away from the busbar 5 a base plate which projects transversely from the plane of the guide wall 16 and forms the triggering means 11.The side web 13 is connected at its second end region 15 to a restoring means 18 in the form of a spring element, which is mounted with its distal end on the busbar 5. A spring force is thus applied to the freely movable second end region 15 of the side web 13, which displaces the holding means 10 into the holding position shown. In the holding position, the side web 13 is spaced apart from the surface of the busbar 5 by a gap at least in the region of the second end region 15.The insulating material housing 2 has a conductor insertion opening 19 which leads in the conductor insertion direction L to a through opening 20 in the busbar 5. This through-opening 20 (also referred to as a conductor plug-through opening or a passage) is bounded on the underside of the busbar 5 by an edge collar 21, which has collar side walls 22, a first collar end wall 23 and an opposite second collar end wall 24. The first collar end wall 23 is set obliquely into the alignment F of the conductor insertion opening 19 and has a clamping projection 25, to which an electrical conductor 12 inserted into the conductor insertion opening 19 is clamped by the clamping leg 7.It can be seen that the insulating material housing 2 has a bearing pin 26 and the clamping spring 4 engages around the bearing pin 26 with the spring bend 8 and with a part of the contact legs 6 and clamping legs 7 adjoining the spring bend 8.The insulating housing 2 further has an actuating opening 27 between the conductor insertion opening 19 and the clamping leg 7. An actuating element 28 in the form of a displaceably mounted actuating presser is installed in this actuating opening 27. By displacing the actuating element 28 toward the busbar 5, the actuating element 28 rests on the clamping limb 7 and displaces the latter into the prestressing position or open position toward the contact limb 6.In the pretensioning position, the clamping leg 7 lies between the holding tab 10 and the contact leg 6, so that the holding tab 10 forms a stop for the clamping leg 7 and latches the latter in the pretensioning position.FIG. 2 shows a plan view of the conductor connection terminal 1 from FIG. 1 with the section line A-A.It can be seen that the conductor insertion opening 19 is arranged next to the actuation opening 27 in the insulating material housing 2. The actuating element 28 is accessible with its actuating head from the outside and has an actuating contour 29 on its end face. The actuating contour 29 is designed, for example, as a depression for receiving the free end of an actuating tool, e.g., a screwdriver. The actuating contour 29 can be slot-shaped or cross-slot-shaped. Alternatively or additionally, the depression may have a central depression.FIG. 3 shows a side sectional view of the conductor connection terminal 1 from FIG. 1 in the closed clamping position.It can be seen that the clamping spring 4 dips with its contact limb 6 and clamping limb 7 into the through-opening 20. The contact leg 6 is bent toward the second collar end wall 15 and mounted on the latter. The clamping leg 7 protrudes toward the first collar end wall 23 and rests with its clamping edge 30 on the free end of the clamping leg 7 on the first collar end wall 23.The conductor insertion port 19 is separated from the operation port 27 by a partition wall 31. The actuating element 28 is arranged with its actuating section at the free end region between the partition wall 31 and the clamping limb 7, so that the partition wall 31 serves as a counter bearing when the clamping limb 7 is displaced with the actuating element 28 towards the contact limb 6.The holding / triggering element 9 has two side webs 13 spaced apart from one another, from each of which a holding means 10 projects towards the respective opposite side web 13. In the closed clamping position, the holding means 10 are located between the clamping leg 7 and the contact leg 6.It can also be seen that the restoring means 18 in the form of a spring bow is connected on the one hand to a common second end region 15 of the side webs 13 and on the other hand is mounted on the busbar 5. A spring force is thus exerted on the side webs 13, which displaces or swivels the side webs 13 together with their holding means 10 towards the spring arch 8.The triggering means 11 has the base plate which is perpendicular to the alignment F of the conductor insertion opening 19, i.e. of the conductor insertion channel. This can be bent toward the rear end, which lies below the contact limb 6, in the direction of the busbar 5, with the result that an inserted electrical conductor 12 impinges on the base plate. A release force is thus exerted on the release means 11 which swivels the side webs 13 with their holding means 10 against the force of the restoring means 18 toward the busbar 5.FIG. 4 shows a side sectional view of the conductor connection terminal 1 from FIG. 1 in the actuated open position with an electrical conductor 12 which is inserted in the conductor insertion direction L into the conductor insertion opening 19 and through the through-opening 20 into the conductor collection pocket 17. The free end of the electrical conductor 12 impinges on the triggering means 11, i.e. the base plate. For this purpose, the triggering means 11 is arranged in alignment F transversely to the conductor insertion direction L or the electrical conductor 12.The actuating element 28 is displaced so far into the actuating opening 27 for opening the clamping spring 4 that the clamping leg 7 is pivoted toward the contact leg 6 and lies behind the holding means 10. Thus, the clamping leg 7 is locked to the holding means 10 in the pre-tensioning position.FIG. 5 shows a side sectional view of the conductor connection terminal 1 from FIG. 1 in the locked open position, i.e. the prestressing position, with an inserted electrical conductor 12. Even without actuation by the actuating element 28, the clamping spring 4 remains in the latched prestressing position.If the electrical conductor 12 is now inserted further downward and impinges on the release means 11, then, by the release force acting in the conductor insertion direction L, a force acting counter to the spring force of the restoring means 18 is applied to the side webs 13 by the connection of the release means 11 via the lateral guide walls 16 to the side webs 13, which force displaces the latter somewhat towards the busbar 5. This displacement has the result that the holding means 10 likewise move toward the busbar 5 and the stop for the clamping limb 7 is canceled, i.e. the clamping limb 7 is unlocked.FIG. 6 shows a side sectional view of the spring force terminal connection 3 of the conductor terminal connection 1 from FIG. 5 latched in the open position.It can be seen that the clamping leg 7 dips with a narrower section into the through-opening 20 and merges above the busbar 5 after a step 32 into a wider section. In the illustrated pretensioning position, the wider section of the clamping leg 7 abuts with its edge region against the holding means 10. This prevents the clamping leg 7 from springing out away from the contact leg 6 and with the clamping edge 30 toward the clamping projection 25. The clamping point formed between the clamping edge 30 and the clamping projection 25 is open, so that an electrical conductor 12 can be inserted into the free space created thereby through the through-opening 20.The side webs 13 are displaced with the aid of the restoring means 18 in such a way that they rest on the busbar 5 at the first end region 14 and are at a distance from the surface of the busbar 5 in the opposite second end region 15. Thus, the holding means 10 is positioned so that it lies at least partially above the step 32 in the region of the wide portion of the clamping leg 7.The contact leg 6 can optionally, as outlined, enter a free space of the second collar end wall 24 and be mounted there in a form-fitting manner.FIG. 7 shows a side sectional view of the spring force clamping connection 3 from FIG. 6 which is unlocked in the open position.The release means 11 with the guide wall 16 connected thereto is now pivoted clockwise, so that the side web 13 connected to the guide wall 16 is displaced with its second end region 15 toward the busbar 5. As a result, the holding means 10 reaches a position below the step 32 and is now located in the narrower region of the clamping limb 7. the stop for the wider edge region of the clamping limb 7 lying above the step 32 towards the spring bow 8 is thus canceled and the clamping limb can spring out away from the contact limb 6 into the closed clamping position by the force of the clamping spring 8.The spring force clamping connection 3 which is automatically actuated thereby is reset by means of the resetting means 18 into the prestressing position of the holding / release element 9 shown in FIG. 6.FIG. 8 shows a perspective front view of the spring force clamping connection 3 from FIG. 5 latched in the prestressing position.The holding / release element 9 has two side webs 13 spaced apart from one another, which extend parallel to one another. Holding tabs 10 are cut free from the side webs 13 and are obliquely inserted into the interior space. The mutually opposite holding tabs 10 point toward one another in order to form a stop for the wider edge region of the clamping limb 7 situated above the step 32. Formed on the side webs 13 below the holding means 10 is in each case a guide wall 16 which extends laterally past the busbar 5. The guide walls 16 are connected to one another via a base plate 11 which forms the triggering means 11. The bottom plate 11 is spaced below the bus bar 5.In the first end region 14, the side webs 13 are mounted on the busbar 5 with bearing ends 33 facing one another.FIG. 9 shows a perspective detailed view of the spring force clamping connection 3 from FIG. 8 with the locking of the clamping leg 7 on the holding tab 10; it can be seen that the holding tab 10 protrudes directly above the step 32 from the plane of the side web 13 toward the wider edge region of the clamping leg 7.It is also clear that the narrower end section of the clamping leg 7 dips into the through-opening 20 below the step 32. Laterally next to the clamping leg 7 are edge webs of the busbar 5, which delimit the through opening 20.FIG. 10 shows a perspective rear side view of the spring force clamping connection 3 from FIG. 8 latched in the prestressing position.The restoring means 18 can be seen in the form of a curved leaf spring. The leaf spring is formed in one piece from the sheet metal material of the holding / release element 9. It protrudes from the upper edge of a transverse web 34, which connects the two side webs 13 adjacent to the holding means 10. The leaf spring extends after bending towards the upper side of the busbar 5 and is mounted on the busbar 5.The cross-piece 34 abuts the contact leg 6. In addition, the side webs 13 engage the clamping spring 4 on both sides, so that the holding / release element 9 is fixed in a positive-locking manner. The leaf spring can optionally be angled at its free end, which rests on the busbar 5, and enter the through-opening 20 (not shown) in order to additionally fix the holding / triggering element 9 therewith.FIG. 11 shows a perspective front view of the holding / release element 9 of the spring force clamping connection 3 from FIG. 8.The two side webs 13 which are spaced apart from one another and are connected to one another via a transverse web 34 can be seen, project transversely from the transverse web 34 and extend from the transverse web 34 above the busbar 5 parallel to one another. The free ends of the side webs 13 are bent over facing one another in order to form bearing ends 33 which bear on the upper side of the busbar 5.Adjacent to the transverse web 34 and the retaining tabs 10 formed out of the plane of the side webs 13, guide walls 16 protrude from the side webs 13. The guide webs 16 are formed integrally with the side webs 13 and pass at their end remote from the side webs 13 into a common base plate 11. The base plate 11 can have an additional collar 35 raised in the direction of the transverse web 34. The base plate 11 together with its collar 35 forms a triggering means 11 which is designed to capture the end of an electrical conductor 12.FIG. 12 shows a perspective rear side view of the holding / releasing element 9 of the spring force clamping connection 3 from FIG. 8.It can be seen that the holding / release element 9 is formed in one piece from a sheet metal material. In this case, the lateral webs 13 are bent away from the transverse web 34, are adjacent to the guide walls 16, which can widen conically towards the release means 11, as illustrated. The transition of the guide walls 16 to the base plate 11 can be effected by means of webs. This enables or simplifies the curved configuration of the base plate 11.FIG. 13 shows a perspective view of the conductor connection terminal 1 with inserted electrical conductor 12, The conductor connection terminal 1 has an insulating material housing with a conductor insertion opening 19 which leads to the busbar 5 in the space laterally enclosed by the side webs 13. Below the busbar 5, a conductor collecting pocket 17 is present in the insulating material housing 2, which receives the edge collar 21 of the busbar 5 and the guide walls 16 with the release means 11.It can be seen that on the upper side of the insulating housing 2 next to the opening of the conductor insertion opening 19 the actuating head of the actuating element 28 is accessible from the outside. The actuating element 28, which is accommodated in the form of an actuating pusher such that it can be displaced in the actuating opening 27 (actuating channel), can be pressed into the insulating material housing 2 with the aid of an actuating tool against the force of the clamping spring 4 in order to open the clamping limb 7. In order to prevent the actuating tool from slipping off, the actuating head has an actuating contour 29 in the form of a depression and / or a slot-shaped depression.FIG. 14 shows a perspective view of a second embodiment of a conductor connection terminal 1 in the locked open position.The conductor connection terminal 1 has an insulating material housing 2 with a conductor insertion opening 19 and an actuation opening 27, both of which open out towards the clamping leg 7 of the clamping spring 4.The spring force clamping terminal 3 installed in the insulating material housing 2 has a busbar 5 having a through opening 20 and a clamping spring 4 inserted into the through opening 20. The clamping spring is, as in the first exemplary embodiment, a leg spring bent in a U-shape, having a contact leg 6, a spring curve 8 and a clamping leg 7. A first collar end wall 23 and a second collar end wall 24 are bent from the mutually opposite end faces of the through-openings 20, said collar end wall protruding in the form of material tabs into the conductor collection pocket 17. The contact leg 6 abuts the second collar end wall 24. The first collar end wall 23 is obliquely set into alignment with the conductor insertion opening 19 and has a clamping projection 25 for clamping an electrical conductor 12.The busbar 5 is bent behind the first collar end wall 23 out of the plane of the through-opening 20 into the conductor collecting pocket 17 and has laterally protruding retaining tabs 36, next to which the retaining / triggering element 9 is positioned.The holding / triggering element 9 is designed as a U-shaped bent sheet metal part, the upper horizontal section of which or the section arranged parallel to the region of the plane of the busbar 5 which has the through-opening 20 forms the holding means 10 and the lower horizontal section spaced apart therefrom forms the triggering means 11. The upper horizontal portion (holding means 10) is connected to the lower horizontal portion (triggering means 11) via a vertical connecting portion 37 which abuts the vertical busbar portion 38 of the folded-over busbar 5.The upper horizontal section (holding means 10) has a recess through which an electrical conductor 12 is passed. In the pretensioning position, the free end of the clamping leg 7 abuts the holding means 10 with the clamping edge 30. The upper horizontal section (holding means 10) of the holding release element 9 thus forms a stop for the clamping leg 7 in order to latch it in the pre-tensioning position or open position displaced towards the contact leg 6.FIG. 15 shows a side cut-out view of the conductor connection terminal 1 from FIG. 14 latched in the prestressing position.It is clear that a spring curve is bent from the lower horizontal section (release means 11) in the direction away from the clamping spring 4, which is mounted on the folded-over section of the busbar 5 and forms the restoring means 18. The holding / triggering element 9 is thus pressed towards the opening 20 of the busbar 5 in the illustrated prestress position.The actuating element 28 is displaced so far toward the busbar 5 and protrudes with its free end into the through-opening 20 that the clamping leg 7 is displaced by the actuating element 28 toward the contact leg 6 into the prestress position next to the holding means 10. The clamping point formed by the clamping edge 30 and the clamping projection 25 is thus open, so that an electrical conductor 12 can be inserted into the conductor insertion opening 19 in the conductor insertion direction L and inserted through the through-opening 20 and the recess in the holding means 10 as far as the triggering means 11.FIG. 16 is a perspective view of the spring force clamping terminal 3 of the second embodiment of FIG. 14 in the biasing position. It is again clear that the prestressed clamping leg 7 rests with its free end, which has the clamping edge 30, against the front end edge of the upper horizontal section (holding means 10). The recess 39 in the holding means 10 can also be seen, which is arranged parallel to the plane of the through-opening 20, so that the through-opening 20 and the recess 39 are aligned with one another.The busbar 5 can optionally also have bridge openings 40, into which a bridge spring 41 is suspended in order to receive an electrically conductive bridge element and to clamp it to the busbar 5.FIG. 17 shows a perspective view and FIG. 18 shows a side view of the holding / release element 9 of the spring force clamping connection 3 from FIG. 16.The U-shaped configuration of the sheet metal part can be seen, in which an upper plate-shaped or tab-shaped section for forming the holding means 10 projects from the vertical connecting section 37 on the one hand and a lower plate-shaped or tab-shaped section for forming the triggering means 11 projects at a distance therefrom on the other hand. A spring bow is exposed from the lower section (triggering means 11) and bent out in the direction pointing away from the holding means 10 in order to form a spring-elastic restoring means 18.FIG. 19 shows a perspective view of the conductor connection terminal 1 from FIG. 14 with an inserted electrical conductor 12 in the unlocked clamping position.The electrical conductor 12 is inserted into the conductor insertion opening 19 in the conductor insertion direction L and inserted through the through-opening 20 and the recess 39 in the holding means 10 to such an extent that its free end impinges on the triggering means 11. The spring-elastic restoring means 18 is compressed by the triggering force exerted on the triggering means 11 by the electrical conductor 12 and the holding / triggering element 9 is displaced downwards away from the clamping edge 30 and the plane of the through-opening 20, such that the stop of the holding means 10 for the clamping limb 7 is cancelled. The clamping leg 7 is thus unlatched and can spring out toward the clamping projection 25 as a result of the spring force stored in the spring bow 8 and clamp the stripped end of the electrical conductor 12 between the clamping edge 30 and the clamping projection 25.It can also be seen that the insulating material housing 2 has a bridge receiving channel 42 which opens out towards the bridge opening 40.FIG. 20 shows a side cut-out view of the conductor connection terminal 1 with an electrically conductive lead 12 clamped in the clamping position.It can be seen that the holding / triggering element 9 is pressed downward by the clamping edge 30 to such an extent that the clamping leg 7 is positioned above the holding means 10 and clamps the electrical conductor 12 to the busbar 5 between the clamping edge and the clamping projection 25.FIG. 21 shows a perspective view of the electrical conductor 12 clamped in the spring force clamping connection 3 from FIG. 19 in the unlocked clamping position.The free end of the electrical conductor 12 rests on the lower horizontal section (release means 11) of the holding / release element 9 and presses the latter downwards counter to the spring force of the restoring means 18, so that the clamping leg 7 can spring out with its clamping edge 30 above the holding means 10.FIG. 22 shows a perspective view of a third embodiment of a conductor connection terminal 1 in the unlocked closed clamping position.The insulator housing 2 has a conductor insertion opening 19 and an actuating opening 27 lying next to it, which is separated from the conductor insertion opening 19 by a separating wall 31. The actuating opening 27 is free and is provided for receiving an actuating tool, for example a screwdriver.The clamping spring is in turn a leg spring bent in a U-shape, which projects with its contact leg 6 and clamping leg 7 into a through-opening 20 of a busbar 5.In the exemplary embodiment shown, the through-opening 20 is surrounded by an edge collar 21. However, an embodiment is also conceivable in which only the first collar end wall 23 with the clamping projection 25 is bent out of the aperture 20, or, as in the second exemplary embodiment, a first collar end wall 23 and a second collar end wall 24 without a further collar side wall or with a collar side wall 22.The holding / triggering element 9 is arranged in the conductor collection pocket 17 and has a vertical side wall 43, from which a holding tab 10 is bent out to form the holding means. A base plate 44 is bent from the side wall 43 and extends into alignment with the conductor insertion opening 19 and forms the triggering means 11. A spring arm 45 is bent away from the base plate 44 in a direction pointing away from the clamping spring 4, which is mounted on the base of the conductor collecting pocket 17 of the insulating material housing 2. The spring arm 45 forms the restoring means 18. Alternatively, the holding / triggering element 9 can also have two vertical side walls 43 spaced apart from one another, which are connected to one another by the base plate 44, so that a holding tab 10 can be bent out of each side wall 43 and the clamping leg 7 can thus be held at its two edge edges lying opposite one another.FIG. 23 shows a perspective view of the conductor connection terminal 1 from FIG. 22 in the actuated open position.The clamping leg 7 is displaced towards the contact leg 6. The clamping leg 7 is positioned between the holding means 10 and the contact leg 6. The holding / triggering element 9 is displaced downward away from the through-opening 20. The restoring means 18 (i.e. the spring arm 45) is compressed in comparison to FIG. 22. The restoring means 18 is thereby prestressed in order to shift the holding / release element 9 back into the prestressing position again in a self-actuated manner.FIG. 24 shows a perspective view and FIG. 25 shows a side sectional view of the conductor connection terminal from FIG. 23 in the latched prestressing position.It is clear that the holding / release element 9 is displaced upwards towards the edge collar 21 by being pressed upwards by the restoring means 18 in a self-actuated manner. As a result, the holding means 10 forms a stop for the clamping leg 7 of the clamping spring 4 positioned between the holding means 10 and the contact leg 6. An electrical conductor 12 can now be inserted into the conductor insertion opening 19 and inserted through the through-opening 20 in order to strike the base plate 44 which is in alignment F transversely with respect to the conductor insertion direction L.FIG. 26 shows a side sectional view of the conductor connection terminal 1 from FIG. 25 in the unlocked open position.The holding / triggering element 9 is displaced against the spring force of the spring arm 45 toward the bottom of the conductor collection pocket 17, so that the holding means 10 now lies below the clamping edge 30. The clamping leg 7 is thus unlatched and can pivot away from the contact leg 6 and toward the first collar end wall 23.FIG. 27 shows a side sectional view of a fourth embodiment of a conductor connection terminal 1 with actuating lever 46 in the prestressing position.The insulating housing 2 has a conductor insertion opening 19 which leads to a spring force clamping connection 3 and a conductor collection pocket 17.The busbar 5 has a clamping section 47 which is oriented horizontally in the illustration and has a clamping projection 25 and is bent over adjacent to the clamping projection 25 in order to form a vertical holding section 48. The holding portion 48 has a recess 49 aligned with the conductor insertion hole 19.The clamping spring 4 is suspended with its contact leg 6 in the recess 49 and mounted on a transverse web 50 which delimits the recess 49.The actuating lever 46 is pivotably mounted in the insulating material housing 2. It has an actuating contour 51 which, in the open or folded-up position shown, acts on the clamping limb 7 and displaces it towards the contact limb 6.A holding / triggering element 9 is arranged in the conductor collection pocket 17. This is formed as a single piece as a sheet metal part and has a holding means 10 in the form of at least one holding tab 53 which is bent from a vertical section 52 and projects into the recess 49 adjacent to the contact limb 6.In the open position of the clamping spring 4, the clamping leg 7 is positioned between the contact leg 6 and the holding means 10. The holding means 10 thus forms a stop for the free end of the clamping leg 7 in order to latch the clamping leg in the prestressing position.The holding / release element 9 has a horizontal bearing section 54 which is bent away from the vertical section 52 opposite the holding tab 53 and merges into a pushing plate 55 projecting therefrom, which forms the release means 11.The holding / triggering element 9 is mounted on the insulating material housing 2 in the bent transition between the horizontal clamping section 47 and the vertical holding section 48.It can be seen that the release means 11, i.e. the pushing plate 55, is located in the alignment F of the conductor insertion opening 19. An electrical conductor 12 introduced into the conductor introduction opening 19 thus impinges on the impact plate 55, which is accessible in the open prestressing position and is not embrittled by the clamping limb 7, in order to thus pivot the holding / release element 9, so that the holding means 10 are moved away from the clamping limb 7.FIG. 28 shows a side sectional view of the conductor connection terminal 1 from FIG. 27 in the unlocked clamping position.The clamping leg 7 is unlatched from the stop by the holding means 10 and is displaced away from the contact leg 6 toward the horizontal clamping section 47. It lies next to the clamping projection 25 on the busbar 5.FIG. 29 shows a side view of the spring force terminal connection 3 of the conductor terminal connection 1 from FIG. 27 in the pre-tensioning position.It is clear here that the clamping leg 7 displaced towards the contact leg 6 is mounted on the holding means 10, i.e. on the holding tab 53.The cleat 55 extends spaced apart and approximately parallel to the vertical portion 52.FIG. 30 shows a side view of the clamping spring 4 with holding / releasing element 9 and actuating lever 46 in the locked open position.It can be seen that the eccentric actuating contour 51 presses the clamping leg 7 toward the contact leg 6 into the open position when the actuating lever 46 is pivoted. The free end of the clamping leg 7 thus reaches between the holding means 10 and the contact leg 6 and is latched to the holding means 10.FIG. 31 shows a perspective rear view and FIG. 32 shows a perspective front view of the spring force clamping terminal 3 of the conductor terminal 1 from FIG. 27 in the pre-tensioning position.The busbar 5 is provided to receive a plurality of clamping springs 4 next to one another in order to clamp a plurality of electrical conductors 12 to the common busbar 5 by means of a spring force clamping connection 3 formed in each case from the busbar 5 and a clamping spring 4 and to connect them electrically to one another via the busbar 5: this is used, for example, for the connection or socket terminals illustrated.The busbar 5 has beads 56 on its upper side, which merge into an elevated clamping projection 25. The edge region which bounds the beads 56 in each case merges into bent edge webs of the vertical retaining section 48, wherein a pair of edge webs are connected to one another at their ends by a transverse web 50 and thus form the recess 49 in the retaining section 48. The contact leg 6 is hooked into the recess 49 on the transverse web 50.On the rear side of the busbar 5, which is diametrically opposite the clamping spring 4, the holding / release element 9 is arranged next to the holding section 48. The two spaced-apart holding tabs 53 project into the recess 49 of the holding section 48. The retaining tabs 53 are located adjacent to the transverse web 50, and the recess 49 is bounded by the transverse web 50 and the two edge webs of the vertical retaining section 48.FIG. 33 is a rear view and FIG. 34 is a front view of the spring force clamping terminal of FIG. 31.The two left spring force clamping connections 3 in FIG. 33 and the two right spring force clamping connections in FIG. 34 are closed and have no holding / releasing element 9. It has a holding / triggering means 9 inserted into the recess 49 of the vertical holding section 48.It can be seen that the impact plate 55 is in alignment with the recess 49, so that an electrical conductor 12 inserted through the recess 49 strikes the impact plate 55 in order to pivot the holding / triggering element 9. In this case, the retaining tabs 53 are moved away from the spring bow 8 in order to cancel the stop for the clamping leg 7. The spring elasticity of the holding tabs 53 together with the mounting of the holding / release element 9 in the transition to the vertical holding section 48, which is oriented at an acute angle of less than 90°, to the horizontal bearing section 54 leads to a self-actuated return into the prestressing position. The holding / triggering element 9 thus also forms a restoring means 18.FIG. 35 shows a perspective rear view and FIG. 36 shows a perspective front view of the spring force terminal connection 3 of the conductor terminal connection 1 from FIG. 27 with the actuating lever 46 opened in the prestressing position.The U-shaped bent holding trigger element 9 is arranged behind the vertical holding section 48 of the busbar 5 as viewed in the conductor insertion direction L. The recess 49 of the vertical holding section 48 is adjoined by the recess of the holding / triggering element 9 formed by the edge webs of the vertical section 52. The edge webs of the holding section 48 adjoin the edge webs of the vertical section 52. The holding tabs 53 formed on the transverse web of the holding means 10 project into the recess 49 and point with their free ends toward the spring arch 8 of the clamping spring 4.FIG. 37 is a front perspective view, and FIG. 38 is a rear perspective view of the holding / releasing member 9 for the spring force clamping terminal 3 of FIGS. 27 to 36.It can be seen that the holding / release element 9 is formed as a one-piece sheet metal part. The holding means 10 is formed by a transverse web, from which two holding tabs 53 spaced apart from one another are bent out of the plane of the transverse web. The transverse web is adjoined by two vertical webs spaced apart from one another to form the vertical section 52. The vertical section 52 thus has a free space or a recess for the passage of an electrical conductor 12. The vertical section merges at an acute angle of less than 90°, preferably in the range from 75 to 90°, into the horizontal bearing section 54 in a bend. As illustrated, this can likewise be web-shaped. The horizontal bearing section 54 merges after bending into the cleat 55, which extends approximately parallel to the vertical section 52 and connects the webs of the horizontal bearing section 54 to one another in the width direction. The impact plate 55 thus extends parallel to the transverse web of the holding means 10, as seen in the width direction.List of reference characters1 Conductor connection terminal 2 Insulating material housing 3 Spring force clamping connection 4 Clamping spring 5 Busbar 6 Contact limb 7 Clamping limb 8 Spring bow 9 Holding / triggering element 10 Holding means 11 Triggering means 12 Electrical conductor 13 Side web 14 First end 15 Second end region 16 Guide wall 17 Conductor collecting pocket 18 Restoring means 19 Conductor introduction opening 20 Passage opening 21 Edge collar 22 Collar side walls 23 First collar end wall 24 Second collar end wall 25 Clamping projection 26 Bearing journal 27 Actuating opening 28 Actuating element 29 Actuating contour 30 Clamping edge 31 Separating wall 32 Step 33 Bearing end 34 Transverse web 35 Collar 36 Holding tab 37 Vertical connecting portion 38 Vertical busbar portion 39 Recess 40 Bridge opening 41 Bridge spring 42 Bridge receiving channel 43 Side wall 44 Base plate 45 Spring arm 46 Actuating lever 47 Horizontal clamping portion 48 Vertical holding portion 49 Recess 50 Transverse web 51 Actuating contour 52 Vertical section 53 Retaining tab 54 Horizontal bearing section 55 Abutment plate 56 Bead F Alignment L Conductor insertion directionReferences 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 20 2011 051 466 U1

[0005] WO 2021 / 105280 A1

[0006]

Claims

Spring force clamping connection (3) having a clamping spring (4) and a busbar (5), wherein an electrical conductor (12) can be clamped to the busbar (5) by means of a clamping limb (7) of the clamping spring (4), wherein the clamping limb (7) can be displaced between a prestressing position and a clamping position and wherein the spring force clamping connection (3) has a holding means (10) which is designed to hold the clamping limb (7) in the prestressing position, and wherein the spring force clamping connection (3) has a triggering means (11) which is designed to trigger a relative movement between the holding means (10) and the clamping limb (7) in order to release the clamping limb (7) when an inserted conductor (12) acts on the triggering means (11), characterized in that, the spring force clamping connection (3) has an automatic restoring means (18) for restoring the holding means (10) and / or the triggering means (11).Spring force clamping connection (3) according to Claim 1, characterized in that the holding means (10) and the triggering means (11) form a holding / triggering element (9).Spring force clamping connection (3) according to Claim 1 or 2, characterized in that the restoring means (18) is a restoring spring.Spring force clamping connection (3) according to one of the preceding claims, characterized in that the restoring means (18) is connected to the holding means (10) and / or the triggering means (11).Spring force clamping connection (3) according to one of the preceding claims, characterized in that the restoring means (18) is mounted on the busbar (5).Spring force clamping connection (3) according to one of the preceding claims, characterized in that the triggering means (11) has a stop surface for a conductor end of the electrical conductor (12).Spring force clamping connection (3) according to Claim 6, characterized in that the restoring means (18) is arranged on a rear side of the triggering means (11) which is remote from the stop surface.Spring force clamping connection (3) according to one of the preceding claims, characterized in that the spring force clamping connection (3) has a manual actuating element (28, 46) for displacing the clamping limb (7) or for actuating or resetting the triggering means (11) and / or the holding means (10).Spring force clamping connection (3) according to one of the preceding claims, characterized in that the holding means (10) is designed as a holding cam.Spring force clamping connection (3) according to one of the preceding claims, characterized in that the triggering means (11) is designed as a triggering lever.Spring force clamping connection (3) according to one of the preceding claims, characterized in that the busbar (5) has a through-opening (20) which is bounded by an opening edge, wherein the electrical conductor (12) can be clamped to the opening edge by means of the clamping spring (4).Spring force clamping connection (3) according to Claim 11, characterized in that the opening edge has an edge collar (21).Spring force clamping connection (3) according to Claim 11 or 12, characterized in that the through-opening (20) is produced as a passage.Spring force clamping connection (3) according to one of Claims 11 to 13, characterized in that a retaining / release element (9) adjoins the opening edge or the edge collar (21), as seen in the conductor insertion direction (L).Spring force clamping connection (3) according to Claim 14, characterized in that the holding / releasing element (9) is mounted movably on the busbar (5).Spring force clamping connection (3) according to claim 14 or 15, characterised in that the holding / release element (9) has a guide section.Spring force clamping connection (3) according to one of Claims 14 to 16, characterized in that the retaining / release element (9) has a retaining means (10) designed as a retaining tab (53).Spring force clamping connection (3) according to one of Claims 14 to 17, characterized in that the holding / triggering element (9) has a triggering means (11) which is designed as a step.Spring force clamping connection (3) according to one of Claims 14 to 18, characterized in that the holding / triggering element (9) is designed as a spring element.Spring force clamping connection (3) according to Claim 19, characterized in that the holding / triggering element (9) has a spring arm (45).Spring force clamping connection (3) according to Claim 20, characterized in that the spring arm (45) projects from the triggering means (11, 44).Conductor connection terminal (1) with a spring force terminal connection (3) according to one of the preceding claims.Conductor connection terminal (1) according to Claim 22, characterized in that the conductor connection terminal (1) has an insulating material housing (2), in which the spring force clamping connection (3) is accommodated.Conductor connection terminal (1) according to Claim 23, characterized in that the restoring means (18) of the spring force terminal connection (3) is mounted on the insulating material housing (2).The busbar (5) for a spring force clamping connection (3) according to one of the preceding claims, characterized in that the busbar (5) has a through opening (20) with an opening edge delimiting the latter, to which opening edge an electrical conductor (12) can be clamped by means of the clamping spring (4) and in that the busbar (5) has a holding / triggering element (9).

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