Spring clamp connection and conductor connection terminal

Abstract

Spring-loaded clamp connection for connecting at least one electrical conductor by means of spring force, comprising at least one busbar (3) and a clamping spring (4), wherein the busbar (3) has a contact section (31) for clamping the electrical conductor and the clamping spring (4) has a clamping leg (43) with a clamping edge (46) for pressing the electrical conductor against the contact section (31), wherein the clamping spring (4) has a spring arc (42) adjoining the clamping leg (43) and a retaining section (41) adjoining the spring arc (42), which is attached to the busbar (3) by means of a fastening section (7), wherein the fastening section (7) is angled relative to the retaining section (41) in the direction of the contact section (31), characterized in that the busbar (3) has at least one projecting support arm (32) against which at least a part of the fastening section (7) comes into contact and is thereby supported.

Description

[0001] The invention relates to a spring-loaded clamping connection for connecting at least one electrical conductor by means of spring force, comprising at least one busbar and a clamping spring. The busbar has a contact section for clamping the electrical conductor, and the clamping spring has a clamping leg with a clamping edge for pressing the electrical conductor against the contact section. The clamping spring has a spring arc adjoining the clamping leg and a retaining section adjoining the spring arc, which is attached to the busbar by means of a fastening section. The fastening section is angled relative to the retaining section in the direction of the contact section. The invention also relates to a conductor terminal with such a spring-loaded clamping connection.

[0002] A spring-loaded clamp connection and a conductor connection terminal are known, for example, from WO 2014 / 124962 A1.

[0003] The invention is based on the objective of providing a further improved spring clamp connection and a conductor connection terminal.

[0004] This problem is solved in a spring-clamp connection of the type mentioned above by the fact that the busbar has at least one projecting support arm against which at least part of the mounting section rests and is thus supported. In this way, the mounting section can be held particularly securely in a desired position relative to the contact section of the busbar. The at least one support arm holds the mounting section, and thus also the clamping spring, in the desired position.

[0005] According to an advantageous embodiment of the invention, the busbar has at least two spaced-apart projecting support arms, against which at least a portion of the mounting section rests and is thereby supported. In this way, the advantageous shape of the mounting section with its spaced-apart tension arms is continued on the support arms in the area of ​​the busbar. This provides good support for the relatively delicate tension arms. Furthermore, sufficient clearance is also provided on the busbar side for routing the electrical conductor to be clamped.

[0006] According to an advantageous embodiment of the invention, the clamped electrical conductor is passed between the two spaced-apart projecting support arms.

[0007] According to an advantageous embodiment of the invention, it is provided that each support arm comes into contact with a tension arm of the fastening section associated with the support arm. The respective support arm can extend parallel to the tension arm.

[0008] According to an advantageous embodiment of the invention, the fastening section has at least one through-opening through which the electrical conductor to be clamped can be inserted. In contrast to the prior art mentioned above, where the fastening section forms a conductor receiving pocket closed in the conductor insertion direction, the spring-clamp terminal according to the invention allows the electrical conductor to be inserted through the through-opening. Accordingly, the at least one through-opening is positioned and dimensioned such that, during the intended use of the spring-clamp terminal, the electrical conductor inserted in a predefined conductor insertion direction is pushed through the through-opening. This allows the spring-clamp terminal to be designed more compactly, and in particular, to be shorter in the conductor insertion direction.This can also result in material savings in the fastening section; busbar material can also be saved if necessary.

[0009] The electrical conductor, when clamped to the spring-loaded terminal, may protrude through the through-hole. A clamping point where the electrical conductor can be clamped between the contact section and the clamping edge may be located, for example, in front of or behind the mounting section in the conductor insertion direction, or at the same level as the mounting section.

[0010] Another advantage of the invention is that the through-opening in the fastening section allows for the easy integration of an automatic conductor connection function into the spring-loaded clamp connection, i.e., an automatic release of a clamping leg held on a retaining element in the open position when an electrical conductor is inserted.

[0011] The retaining section, together with the fastening section, serves to hold the clamping spring and, in particular, to support the clamping spring against the clamping force applied by the clamping leg, which acts in the direction of the contact section. In an advantageous embodiment, the fastening section can only be subjected to a tensile force; that is, no compressive forces occur in the fastening section during the intended operation of the spring-clamp connection, at least in the area of ​​the fastening section that surrounds the at least one through-hole.

[0012] According to an advantageous embodiment of the invention, the fastening section has two spaced-apart, narrow, elongated tension arms, between which a gap is formed forming at least one through-opening through which the electrical conductor to be clamped can be inserted. The tension arms are designed to absorb only tensile forces. Accordingly, the tension arms can be relatively slender because they do not require the bending stiffness necessary for absorbing compressive forces. In this way, the desired through-opening can be provided with a simple design of the spring-clamp connection, and at the same time the fastening section can be designed to save material.

[0013] According to an advantageous embodiment of the invention, the electrical conductor to be clamped is to be inserted into the spring-loaded clamping connection in a conductor insertion direction that runs essentially parallel to the longitudinal extent of the contact section. In this way, good contact of the electrical conductor with the contact section and thus good current transmission is possible.

[0014] According to an advantageous embodiment of the invention, the fastening section extends at an angle of 60° to 120°, particularly 80° to 100°, to the conductor insertion direction from the holding section towards the contact section. In this way, the clamping spring, together with the fastening section, can extend back towards the busbar in a loop shape, which also promotes a compact design.

[0015] According to an advantageous embodiment of the invention, the fastening section is formed integrally with the clamping spring, particularly with the retaining section, or is designed as a separate component from the clamping spring. If the fastening section is designed as a separate component, the clamping spring can have a relatively simple shape and can therefore be manufactured using simple stamping and bending processes. Furthermore, it is possible for the clamping spring and the fastening section to be made of different materials or at least of differently treated materials. Accordingly, one of these components can be hardened, for example, by tempering; both components can also be hardened by tempering, optionally to different degrees of hardness. In this way, the fastening section can be designed as a retaining frame for holding the clamping spring on the busbar.

[0016] If the clamping spring and the mounting section are formed as a single unit, assembly of the components is simplified because only one assembly needs to be installed. In this case, the clamping spring can be designed as a loop-shaped component.

[0017] According to an advantageous embodiment of the invention, at least one actuating section is formed on the clamping leg, at which the clamping leg can be moved from a clamping position to an open position by means of an actuating element, in which the clamping edge of the clamping leg is moved away from the contact section relative to the clamping position. In this way, a defined part of the clamping spring or clamping leg is made available for manual actuation. It is also conceivable, in principle, that the clamping leg is formed without an actuating section. In this case, manual actuation can be effected by directly applying pressure to the clamping leg.

[0018] At least one actuating section can be formed as a flared or bent tab on the clamping leg. For example, an actuating section can be formed on opposite sides of the clamping leg. This allows for symmetrical actuation of the clamping leg, thus preventing misalignment.

[0019] According to an advantageous embodiment of the invention, the at least one actuating section extends, at least in the open position, at an angle of + / - 30° to the conductor insertion direction. This enables an advantageous actuation direction of the manual actuating section and, accordingly, good force transmission.

[0020] The clamping arm can be actuated by a separate tool, which then serves as the actuating element.

[0021] According to an advantageous embodiment of the invention, the spring-loaded clamping connection has a manual actuating element for moving the clamping arm into the open position. This manual actuating element has a manual actuation section for manual operation. This has the advantage that the spring-loaded clamping connection has its own actuating element, which can be optimally designed for simple and reliable actuation of the clamping arm. Furthermore, an actuating element is always present, so the user does not need a separate tool.

[0022] According to an advantageous embodiment of the invention, the manual actuating element is designed to branch out from the manual actuating section into two spaced-apart, essentially parallel actuating arms, each of which has a spring-loaded section for applying force to an actuating section of the clamping spring. Such a fork-shaped actuating element can be conveniently and compactly integrated into a small conductor terminal block. For example, the actuating element with its actuating arms can extend over parts of the spring-loaded clamping connection, such as the contact section or another part of the busbar and / or a part of the clamping spring.

[0023] According to an advantageous embodiment of the invention, the spring-clamp connection has a manually actuating element: a sliding actuating push button that is movable in one direction. This allows for simple and ergonomically advantageous actuation of the clamping arm by applying a pressure force to the manual actuating section of the actuating push button. The actuating push button can, for example, be displaceable in a linear direction. For this purpose, the actuating push button can be slidably mounted in an actuating shaft of an insulating housing of a conductor terminal in which the spring-clamp connection is arranged.

[0024] According to an advantageous embodiment of the invention, the actuating push button is positioned at an angle of 60° to 120°, particularly 80° to 100°, to the conductor insertion direction. This allows for a particularly efficient and direct force transmission from the actuating push button to the clamping arm. Forces are thus largely kept away from any insulating housing that may surround the spring-clamp connection, preventing unnecessary stress on the insulating housing material. The actuating push button's direction of movement can, for example, be essentially perpendicular to the conductor insertion direction.

[0025] According to an advantageous embodiment of the invention, the spring-loaded clamp connection has a pivotable actuating lever as a manual actuating element. This also enables simple and ergonomic actuation of the clamping arm. Such actuation is particularly advantageous for spring-loaded clamp connections designed for large conductor cross-sections, because by appropriately designing the lever length of the actuating lever, the actuating forces can be kept within reasonable limits even with very strong clamping springs.

[0026] According to an advantageous embodiment of the invention, the manual actuation section of the actuating lever projects from the spring-clamp terminal on the side of the spring arc of the clamping spring. Accordingly, the user can actuate the actuating lever in the area of ​​the spring arc. If the spring-clamp terminal is arranged in an insulating housing of a conductor terminal, the manual actuation section can project from the side of the insulating housing where the spring arc is located. The manual actuation section can, in particular, project in a direction extending away from the mounting section.

[0027] According to an advantageous embodiment of the invention, the spring-loaded clamp connection has a retaining element for holding the clamping arm in the open position. This has the advantage that the clamping arm can be held in the open position by the retaining element for extended periods, even without the need for manual operation of the actuating element. It is also possible to supply the spring-loaded clamp connection, or a conductor terminal formed therewith, with the clamping arm already in the open position, so that the user can connect the electrical conductor even more easily and quickly. This offers a significant time advantage, particularly in extensive wiring work.

[0028] According to an advantageous embodiment of the invention, the spring-loaded clamping connection has a release element with a release section, by which, when the release section is acted upon with a release force, the clamping leg held on the retaining element can be released from the retaining element. In this way, the spring-loaded clamping connection can advantageously be designed with an automatic release function for the conductor connection. The electrical conductor inserted in the conductor insertion direction can then press against the release section with a release force and thereby, via the release element, displace the retaining element and / or the clamping leg such that the clamping leg releases from the retaining element and springs back, thus clamping the electrical conductor against the contact section.

[0029] According to an advantageous embodiment of the invention, the release element is formed integrally with the retaining element. This enables simple and cost-effective manufacturing of the release element and retaining element components. For example, the retaining element and the release element can be formed together to form a combined retaining-release element.

[0030] According to an advantageous embodiment of the invention, the release section is arranged behind the fastening section in the conductor insertion direction. Advantageously, the electrical conductor can then be guided through the at least one through-opening into the fastening section during insertion in the conductor insertion direction and then encounters the release section as desired, thereby causing the automatic release of the clamping leg from the retaining element.

[0031] According to an advantageous embodiment of the invention, the retaining element is formed integrally with the fastening section. This allows for a particularly advantageous provision of a single unit consisting of the fastening section and the retaining element, optionally also including the release element. For example, the retaining element together with the release element can be punched out and bent as a single material tab from the inner area of ​​the fastening section. This automatically forms at least one through-opening in the fastening section. For example, the retaining element can branch off from the fastening section at a relatively small, acute angle. The release element can be bent at a larger angle relative to the retaining element, e.g., at an angle of 45 to 90°.The release section can then extend essentially orthogonally to the conductor insertion direction from a connection area of ​​the release element, which connects the release section to the end of the retaining element.

[0032] According to an advantageous embodiment of the invention, the busbar has a main body designed as an elongated, flat, essentially planar sheet metal component and / or which forms the majority of the busbar, with the contact section projecting from the main body in a substantially straight line. This enables simple and cost-effective manufacturing of the busbar. In particular, the busbar can be designed to be relatively material-efficient.

[0033] According to an advantageous embodiment of the invention, the fastening section engages behind the busbar on the side facing away from the clamping leg. For example, the fastening section can have at least one bent or angled fixing section at its end facing the busbar, with which the fastening section engages behind the busbar. The busbar is thus clamped between the fastening section and the clamping leg, so that a self-supporting spring-loaded clamping connection can be provided, in which any insulating housing that may be present is essentially not subjected to forces from the clamping spring, at least when the clamping leg is in the clamping position.

[0034] The aforementioned problem is also solved by a conductor terminal block with an insulating housing and a spring-loaded clamping connection of the type described above, which is arranged at least predominantly within the insulating housing. The insulating housing has a conductor entry opening through which an electrical conductor can be guided in the conductor entry direction to a clamping point between the contact section and the clamping edge. The advantages described above can also be realized in this way.

[0035] For the purposes of the present invention, the indefinite term "a" is not to be understood as a numeral. Therefore, when, for example, a component is mentioned, this is to be interpreted as "at least one component". Where angles are specified in degrees, these refer to a circle of 360 degrees (360°).

[0036] The invention is explained in more detail below with reference to exemplary embodiments and the accompanying drawings. The drawings show: Fig. 1 a spring clamp connection in side view, Fig. 2 the spring clamp connection according to Fig. 1 in perspective view with an actuating element, Fig. 3 a conductor terminal in side view in the clamping position, Fig. 4 the conductor connection terminal according to Fig. 3 in the open position, Fig. 5 another embodiment of a spring-loaded clamping connection in side view, Fig. 6 the spring clamp connection according to Fig. 5 in perspective view with an actuating element, Fig. 7 a conductor terminal in side view in the clamping position, Fig. 8 the conductor connection terminal according to Fig. 7 in the open position.

[0037] The in Fig. The spring-loaded clamping connection shown in Figure 1 has a busbar 3 and a clamping spring 4 attached to the busbar 3. The busbar 3 has a main body 30, which comprises the largest area of ​​the busbar 3. The main body 30 is designed as an elongated, flat, essentially planar body. A contact section 31 projects from the main body 30, for example, essentially in a straight line. The contact section 31 serves to clamp an electrical conductor to the busbar 3. The busbar 3 also has at least one support arm 32, which projects from the main body 30 and is angled relative to the main body 30, for example, essentially at a right angle. For example, a support arm 32 can be formed to the left and right of the contact section 31. The support arms 32 can be spaced apart from each other in such a way that a clamped electrical conductor is passed between the support arms 32.

[0038] The clamping spring 4 has a clamping leg 43 for clamping the electrical conductor to the contact section 31. The clamping leg 43 may have a clamping tongue 45 at its free end. At the end of the clamping leg 43 or the clamping tongue 45, a clamping edge 46 is arranged, which serves to clamp the electrical conductor. At the opposite end, the clamping leg 43 transitions into a spring arc 42 of the clamping spring 4. The spring arc 42 is designed to prevent deflection of the clamping leg 43 from the contact section 31. Fig. The clamping spring 4, shown in Figure 1, is designed to move from the clamping position to an open position and vice versa, performing the main part of the bending movement. The spring arc 42 transitions into a retaining section 41 of the clamping spring 4. The clamping spring 4 can be formed integrally with the retaining section 41, the spring arc 42, and the clamping leg 43 as a single spring component.

[0039] An electrical conductor can be inserted into the spring-loaded clamping connection in a conductor insertion direction L and clamped at a clamping point formed between the clamping edge 46 and the contact section 31.

[0040] The spring-clamp terminal has a mounting section 7 that extends from the end of the retaining section 41 furthest from the spring arc 42 towards the busbar 3. The mounting section 7 has a fixing section 71 by which the mounting section 7 is attached to the busbar 3. The fixing section 71 can, for example, be attached behind the contact section 31. The mounting section 7 extends substantially in a straight line over a significant portion of its length and assumes an angle of 60° to 120° with respect to the conductor entry direction L.

[0041] The spring-loaded clamping connection additionally has a retaining element 5, which has a first detent element 50. Furthermore, the spring-loaded clamping connection has a release element 8, which has a release section 80. At least one actuating section 44 is formed on the clamping leg 43, at which the clamping leg 43 can be actuated by a manual actuating element to deflect it into the open position. The clamping leg 43 also has at least one second detent element 47, with which the clamping leg 43 can be locked in the open position against the first detent element 50. This locking action allows the clamping leg 43 to be held in the open position against the retaining element 5, even without manual actuation of the clamping leg. The at least one second detent element 47 can, for example, be designed as a detent edge at the free end of the actuating section 44.

[0042] In the Fig. 2 is the spring clamp connection according to Fig. Figure 1 shows the clamping arm 43 in the open position, in which it is locked onto the retaining element 5. As can be seen, the fastening section 7 has a through-opening 70. The electrical conductor to be clamped can be inserted through this through-opening 70. The through-opening 70 is, as can be seen, relatively wide, so that the fastening section 7 in this area is formed only by two lateral, elongated, thin pull arms 72, which extend from the retaining section 41 to the busbar 3. In the area of ​​the busbar 3, the pull arms 72 are connected to each other by a transverse connecting section, which forms the fixing section 71.

[0043] It can be seen that the pulling arms 72 are supported and pressed against the support arms 32 to stabilize the clamping spring 4. The support arms 32 are spaced apart from each other so that the passage between the support arms 32 is at least substantially aligned with the opening 70, and an electrical conductor to be inserted is guided through the space between the support arms 32.

[0044] It can be seen that the retaining element 5 is formed integrally with the fastening section 7. The release element 8 is also formed integrally with the retaining element 5. In the illustrated embodiment, the retaining element 5, together with the release element 8, is formed as a multiply bent section of material from the central area of ​​the original sheet metal from which the fastening section 7 is formed, and bent into the shape shown. In this way, the retaining element 5 with the release element 8 is elastically movable relative to the fastening section 7 and can be deflected, in particular, by passing an electrical conductor, inserted in the conductor insertion direction L, through the through-opening 70 and pressing it against the release section 80. This allows the release element 8 to be deflected in a pivoting motion, which simultaneously deflects the retaining element 5 with the first locking element 50.This deflection movement releases the locking mechanism of the second locking element 47 on the first locking element 50, allowing the clamping leg 43 to be released from the locked open position and spring back into the clamping position, e.g. to clamp an electrical conductor.

[0045] The Fig. Figure 2 additionally shows a manual actuating element 6 as part of the spring-clamp connection, which is designed as a linearly displaceable actuating push button. The manual actuating element 6 has a manual actuating section 60. Starting from the manual actuating section 60, the manual actuating element 6 splits into two spaced-apart actuating arms 61, each of which encompasses the contact section 31 and extends to an actuating section 44 of the clamping leg 43. The actuating arms 61 each have a spring-loaded section at their free ends with an arcuate convex outer surface, with which they can each apply an actuating force to an actuating section 44 of the clamping spring.

[0046] In the illustrated embodiment, the actuating element 6 or the actuating arms 61 can slide along the pull arms 72 and / or be supported on the pull arms 72.

[0047] The Fig. Figure 3 shows a spring clamp connection according to Fig. 2 as part of a conductor terminal 1, which has an insulating housing 2. The spring-loaded clamp connection is largely located inside the insulating housing 2. The manual actuating section 60 can, of course, be actuated from the outside of the insulating housing. The insulating housing 2 has a conductor entry opening 20 into which an electrical conductor can be inserted in the conductor entry direction L into the insulating housing 2 and thereby guided to the clamping point between the clamping edge 46 and the contact section 31. The insulating housing 2 has an actuating shaft 21 in which the manual actuating element 6 is guided in a displacement direction V. The conductor entry direction L is essentially perpendicular to the displacement direction V. Fig. Figure 3 shows the conductor connection terminal 1 with a spring-loaded clamping connection in the clamping position.

[0048] The Fig. 4 shows the conductor connection terminal according to Fig. 3. After the spring-loaded clamp connection is moved into the open position by actuating the manual actuating element 6, the clamping leg 43 is locked onto the retaining element 5. If an electrical conductor is now inserted through the conductor entry opening 20 into the insulating housing 2 and its free end is pressed against the release section 80, this releases the locking mechanism of the clamping leg 43 on the retaining element 5 and clamps the electrical conductor to the contact section 31 by means of the clamping edge 46.

[0049] The Fig. Figure 5 shows another embodiment of a spring-loaded clamping connection, which is essentially similar to the embodiment according to Fig. 1 is. The Fig. Figure 5 shows the spring-loaded clamping connection in the clamping position. Unlike the Fig. 1. The clamping spring 4 is shaped slightly differently at the transition from the spring arc 42 to the clamping leg 43. Whereas in the embodiment of Fig. 1. A transition from the spring arch 42 to the clamping leg 43 with a monotonically increasing change in curvature is realized in the embodiment of the Fig. 5. At this transition, a concave recess 48 is formed, which has a curvature opposite to the direction of curvature of the spring arc 42. This recess 48, as will be explained below, is helpful for the realization of a spring-clamp connection with lever actuation.

[0050] The Fig. Figure 6 shows the spring clamp connection according to Fig. 5 in the open position, in which the clamping leg 43 is locked onto the retaining element 5. According to Fig. The spring-loaded clamping connection 6 additionally has a manual actuating element 6, which is designed as a pivotable actuating lever. The manual actuating element 6 in turn has a manual actuating section 60. Starting from the manual actuating section 60, the actuating element 6 splits into two spaced-apart actuating arms 61, which in turn have a spring-loaded section at their free end for actuating the clamping leg 43 or the actuating sections 44.

[0051] The Fig. Figure 7 shows a conductor terminal 1 with an insulating housing 2 in which a spring-loaded clamp connection is located according to Fig. 6 is installed. It is evident that the manual actuating element 6 with the manual actuating section 60 protrudes from one side of the insulating housing 2 or is at least to be actuated on this side of the housing, where the conductor entry opening 20 is also located. A bearing receptacle 22 is formed in the insulating housing 2, on which the actuating element 6 is pivotably mounted about a pivot axis. To save space in this mounting, the recess 48 on the clamping spring 4 can be used, i.e., part of the bearing area of ​​the actuating element 6 can project into this recess 48. The Fig. Figure 7 shows the conductor connection terminal 1 with the spring-loaded clamping connection in the clamping position.

[0052] The Fig. Figure 8 shows the conductor connection terminal according to Fig. 7 after the spring-loaded clamping connection is moved into the open position. The clamping arm 43 is locked onto the retaining element 5. The clamping arm 43 can be released from the locked position, as shown by the Fig. 3 and Fig. 4 explains, again by inserting an electrical conductor into the conductor terminal 1 and applying an actuating force to the release section 80 by means of the electrical conductor.

[0053] In the illustrated embodiments, the fastening section 7 is formed integrally with the clamping spring 4, such that the fastening section 7 is integrally connected to the retaining section 41. In another advantageous embodiment, the fastening section 7 can be designed as a separate component, which can be coupled to the retaining section 41 at its end facing the retaining section 41, for example, by a positive-locking connection. In this embodiment, the retaining element 5 with the release element 8 can again be formed integrally with the fastening section 7, as explained above. Reference symbol list 1 conductor connection terminal 2 insulating housings 3 Power rail 4 clamping springs 5 retaining element 6 manual actuating element 7 Mounting section 8 Solvent element 20 conductor entry openings 21 Actuating shaft 22 Bearing intake 30 main bodies 31 Contact section 32 Support arm 41 Stop section 42 feather bows 43 clamping legs 44 Actuation section 45 clamping tongue 46 clamping edge 47 second locking element 48 trough 50 first locking element 60 manual actuation section 61 Actuating arm 70 Passage opening 71 Fixing section 72 Pulling arm 80 Solution section L conductor entry direction V Direction of movement QUOTES INCLUDED IN THE DESCRIPTION

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

[0000] WO 2014 / 124962 A1

[0002]

Claims

Spring-loaded clamp connection for connecting at least one electrical conductor by means of spring force, comprising at least one busbar (3) and a clamping spring (4), wherein the busbar (3) has a contact section (31) for clamping the electrical conductor and the clamping spring (4) has a clamping leg (43) with a clamping edge (46) for pressing the electrical conductor against the contact section (31), wherein the clamping spring (4) has a spring arc (42) adjoining the clamping leg (43) and a retaining section (41) adjoining the spring arc (42), which is attached to the busbar (3) by means of a fastening section (7), wherein the fastening section (7) is angled relative to the retaining section (41) in the direction of the contact section (31), characterized in that the busbar (3) has at least one projecting support arm (32) against which at least a part of the fastening section (7) comes into contact and is thereby supported. Spring clamp connection according to claim 1, characterized in that the fastening section (7) has at least one through-opening (70) through which the electrical conductor to be clamped can be inserted. Spring clamp connection according to claim 2, characterized in that the fastening section (7) has two spaced-apart narrow elongated pull arms (72) between which an intermediate space forming at least one through-opening (70) is formed, through which the electrical conductor to be clamped can be inserted. Spring clamp connection according to one of the preceding claims, characterized in that the busbar (3) has at least two spaced-apart projecting support arms (32) on which at least a part of the fastening section (7) comes to rest and is thereby supported. Spring force clamp connection according to claim 4, characterized in that the clamped electrical conductor is passed between the two spaced-apart projecting support arms (32). Spring force clamp connection according to one of claims 4 to 5, characterized in that a respective support arm (32) comes into contact with a tension arm (72) of the fastening section (7) associated with the support arm. Spring clamp connection according to one of the preceding claims, characterized in that the electrical conductor to be clamped is to be inserted into the spring clamp connection in a conductor insertion direction (L) which runs substantially parallel to the longitudinal extent of the contact section (31). Spring clamp connection according to claim 3, characterized in that the fastening section (7) extends at an angle in the range of 60° to 120°, in particular in the range of 80° to 100°, to the conductor insertion direction (L) from the holding section (41) in the direction of the contact section (31). Spring clamp connection according to one of the preceding claims, characterized in that the fastening section (7) is formed integrally with the clamping spring (4), in particular with the retaining section (41), or is designed as a separate component. Spring-loaded clamping connection according to one of the preceding claims, characterized in that at least one actuating section (44) is formed on the clamping leg (43) on which the clamping leg (43) can be moved from a clamping position to an open position by means of an actuating element, in which the clamping edge (46) of the clamping leg (43) is moved away from the contact section (31) relative to the clamping position. Spring clamp connection according to claim 10, characterized in that the at least one actuating section (44) extends at least in the open position at an angle in the range of + / - 30° to the conductor insertion direction (L). Spring-loaded clamping connection according to one of the preceding claims, characterized in that the spring-loaded clamping connection has a manual actuating element (6) for moving the clamping leg (43) into the open position, wherein the manual actuating element (6) has a manual actuating section (60) at which the manual actuating element (6) is to be manually actuated. Spring force clamp connection according to claim 12, characterized in that the manual actuating element (6) branches out from the manual actuating section (60) into two spaced-apart, substantially parallel actuating arms (61), each of which has a spring-actuating section for applying force to an actuating section (44) of the clamping spring (4). Spring force clamp connection according to one of claims 12 to 13, characterized in that the spring force clamp connection has a movable actuating push button as a manual actuating element (6) which is movable in a displacement direction (V). Spring force clamp connection according to claim 14, characterized in that the displacement direction (V) of the actuating push button (6) runs at an angle in the range of 60° to 120°, in particular in the range of 80° to 100°, to the conductor insertion direction (L). Spring clamp connection according to one of claims 12 to 15, characterized in that the spring clamp connection has a pivotable actuating lever as a manual actuating element (6). Spring force clamp connection according to claim 16, characterized in that the manual actuating section (60) of the actuating lever projects from the spring force clamp connection on the side of the spring arc (42) of the clamping spring (4). Spring clamp connection according to one of the preceding claims, characterized in that the spring clamp connection has a retaining element (5) for holding the clamping leg (43) in the open position. Spring force clamp connection according to claim 18, characterized in that the spring force clamp connection has a release element (8) with a release section (80) by which, when the release section (80) is acted upon with a release force, the clamping leg (43) held on the retaining element (5) can be released from the retaining element (5). Spring force clamp connection according to one of claims 18 to 19, characterized in that the release element (8) is formed integrally with the retaining element (5). Spring clamp connection according to one of claims 18 to 20, characterized in that the release section (80) is arranged behind the fastening section (7) in the conductor insertion direction (L). Spring force clamp connection according to one of claims 18 to 21, characterized in that the retaining element (5) is formed integrally with the fastening section (7). Spring clamp connection according to one of the preceding claims, characterized in that the busbar (3) has a main body (30) which is designed as an elongated, flat, substantially planar sheet metal component and / or which forms the largest part of the busbar, wherein the contact section (31) projects substantially straight from the main body (30). Spring clamp connection according to one of the preceding claims, characterized in that the fastening section (7) engages behind the busbar (3) on the side facing away from the clamping leg (43). Conductor terminal (1) with an insulating housing (2) and a spring-loaded clamping connection according to one of the preceding claims, which is arranged at least predominantly in the insulating housing (2), wherein the insulating housing (2) has a conductor entry opening (20) through which an electrical conductor can be guided in the conductor entry direction (L) to a clamping point between the contact section (31) and the clamping edge (46).

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