Spring force clamping connection piece and connection terminal

Abstract

The invention relates to a spring-loaded clamping connection, comprising:-a busbar, which has a conductor insertion opening for inserting an electrical conductor for clamping to a clamping section of the busbar,-a clamping spring, which has a bearing leg, which bears against the busbar, and-a spring, which is arranged on the clamping section of the busbar, a clamping leg having a clamping edge for clamping the electrical conductor inserted into the conductor insertion opening at a clamping point formed by the clamping section of the conductor insertion opening and the clamping edge of the clamping leg; and a spring bow connecting the supporting leg with the clamping leg. The invention also relates to a connection terminal having an insulating material housing and such a spring force clamping connection in the insulating material housing.

Description

Technical Field

[0001] The present invention relates to a spring force clamping connection member, which has:

[0002] - A bus bar, the bus bar having a wire insertion opening for inserting an electrical wire to be clamped onto a clamping section of the bus bar,

[0003] - A clamping spring, the clamping spring having: a support leg that abuts against the bus bar; a clamping leg that has a clamping edge for clamping the electrical wire inserted into the wire insertion opening at a clamping position formed by the clamping section passing through the wire insertion opening and the clamping edge of the clamping leg; and a spring bow connecting the support leg and the clamping leg.

[0004] The present invention also relates to a terminal block having an insulating material housing and such a spring force clamping connection member in the insulating material housing. Background Art

[0005] Spring force clamping connection members are used to clamp electrical wires onto a clamping position formed between the clamping leg of the clamping spring and the bus bar. To clamp the electrical wire, the clamping spring can be pressed open from the bus bar by the electrical wire against the force of the clamping spring during direct connection. This is feasible for rigid wires, but the opposite is true in the case of multi-strand wires or stranded wires.

[0006] There is a need to clamp electrical wires in such a way that the spring force clamping connection member is provided in a self-retaining manner in the open position. Here, it is generally desired to deliver terminal blocks with open spring force clamping connection members from the factory.

[0007] DE 20 2011 051 466 U1 discloses a clamping spring for a connection terminal, the clamping spring having a clamping leg that transitions into a first tensioning device (i.e., the spring bow), a basic leg is connected to the first tensioning device, and a locking leg is connected after the second tensioning device. The locking leg has a protrusion protruding from the plane of the locking leg, and when the clamping leg is displaced towards the basic leg against the spring force, the protrusion forms a stop for the clamping edge of the open clamping leg.

[0008] EP 2 466 689 B1 discloses a clamping contact for electrically joining a wire to a clamping position, the clamping position including a contact area for abutting the electrical wire and a spring leg, and the free end of the spring leg holds the electrical wire between it and the contact area when the clamping contact is closed. The clamping contact has a separate release lever, the release lever is arranged in the movement trajectory of the electrical wire and is in an effective connection with the spring leg to hold the spring leg in the open position.

[0009] WO 2021 / 105280 A1 discloses a straight plug-in clip for connecting electrical conductors, which has a busbar, a clamping spring acting on a pressure spring, and a retaining spring for locking the clamping spring in the open position. Summary of the Invention

[0010] Based on this, the object of the present invention is to implement an improved spring force clamping connection and a terminal block having such a spring force clamping connection.

[0011] The object is achieved by means of a spring force clamping connection and a terminal block having the features of the present invention. Advantageous embodiments are described below.

[0012] In such a self-retaining spring force clamping connection, on the lower side of the busbar opposite the upper side of the busbar facing the spring bow, a retaining element is movably articulated at the busbar. The retaining element has a locking profile which is configured to lock a clamping leg deflected against the spring force towards a support leg into an open retaining position. The retaining element has a release section, wherein the movable support section of the retaining element is coordinated with the position of the release section such that when an electrical conductor is inserted through a wire insertion opening and force-coupled with the release section, the retaining element at the retaining position where the clamping leg is locked in the locking profile in the open retaining position is displaced into a release position in which the clamping leg is unlocked from the retaining element.

[0013] For the support of the retaining element, the busbar is used, such that the pivot axis of the retaining element is independent of the spring-elastic clamping spring. This enables a stable support of the retaining element and a compact construction with an improved kinematics between the clamping leg and the retaining element which are movable relative to each other for locking and unlocking in the retaining position.

[0014] The release section of the retaining section can be oriented spaced apart from and parallel to the insertion plane formed by the wire insertion opening. It is not necessary here that the insertion plane and the release section are precisely plane-parallel. It is sufficient that there is a functional parallelism by means of which it is ensured that a wire inserted into the wire insertion opening towards the clamping site hits the release section in order to cause a lever force acting on the retaining element to unlock the clamping leg. Thereby, for example, an acute-angle inclination is also parallel in the sense of this definition, in particular an inclination of less than 20°.

[0015] The retaining element can have a side wall arranged next to the wire insertion opening in the wire insertion direction, which side wall extends away from the plane of the busbar. The side wall can have a locking projection for forming the locking profile and is movably supported relative to the busbar. Thereby, stable lateral locking of the clamping leg at the locking projection protruding from the side wall towards the clamping leg can be achieved in a very compact manner.

[0016] The retaining element can also be formed here only by side walls in a particularly material-saving and compact embodiment, the side walls having release sections that project into the alignment lines of the electrical conductors so as to be deflected laterally when the electrical conductors are inserted in order to unlock the locking profile.

[0017] The retaining element can have a bottom that projects laterally from the side wall, the bottom providing the release section. Thereby, the retaining element is L-shaped in cross section and can pivot relative to the busbar about a region opposite the release section. The electrical conductor striking the release section pivots the side wall laterally away from the clamping leg in order to remove the stop present between the clamping leg and the side wall in the retaining position and to unlock the clamping spring.

[0018] The retaining element can have an end wall that extends laterally away from the side wall and is movable relative to the busbar. Here, the retaining element can pivot about a pivot axis present at the end wall. This enables another kinematics for unlocking the clamping leg.

[0019] The support leg can have a retaining section that extends from the direction of the spring bow through the conductor insertion opening, the retaining section being connected to the retaining element and the retaining element being elastically movable and supported at the busbar. The support leg supported at the busbar here serves to carry the retaining section and provides, via its elasticity, an elastically pivotable support between the retaining element and the busbar. Thereby, an indirectly elastically pivotable support of the retaining element at the busbar is achieved in a simple and compact construction.

[0020] This also includes the following variant, where an extension of the support leg itself forms the retaining section. However, it is also conceivable to cut a narrow strip from the support leg and guide it through the conductor insertion opening, where the support leg can then be supported, for example, on the busbar or in some other way at the busbar.

[0021] The retaining section of the support leg can be supported at the retaining element between a support projection of the side wall of the retaining element and the end wall of the retaining element. Thereby, the retaining element is fixed at the retaining section of the support leg by means of its end wall. The fixing can be effected, for example, by form fit, friction fit and / or material fit.

[0022] The retaining element can have two mutually opposed side walls, a bottom region that curves towards each other from the side walls, an end wall that extends transversely between the side walls and perpendicular to the side walls and the bottom wall, and a bottom plate. The bottom plate can be arranged between the side walls, supported on the bottom section and fixed at the side walls by means of support projections. The bottom plate can form the release section and be supported at the end wall by means of a support region that curves towards the busbar.

[0023] Thereby, a stable cage is achieved, in which the clamping legs of the clamping spring can be locked at the mutually opposite side walls, and in which an electrical conductor striking the base plate displaces a retaining element to unlock the clamping legs. By transitioning the base plate into the side walls, deformation of the base plate is avoided.

[0024] The base plate can be part of the retaining section of the support section or part of the extension of the support leg.

[0025] The conductor insertion opening of the busbar can have a flange which extends from the plane formed by the busbar through the conductor insertion opening towards the retaining section at the end side of the conductor insertion opening and forms a clamping section.

[0026] The conductor insertion opening of the busbar can have a flange which delimits the conductor insertion opening partially or completely and extends from the plane formed by the busbar through the conductor insertion opening towards the retaining element.

[0027] The clamping section can be formed at such a flange.

[0028] The busbar can have a plurality of conductor insertion openings, each of which has a clamping spring provided thereat, wherein at least one of the conductor insertion openings is provided with a retaining element. The solution according to the invention can thereby also be implemented several times at the busbar for a plurality of spring-force clamping connections.

[0029] A terminal having an insulating material housing has at least one such spring-force clamping connection according to the invention described above in the insulating material housing. The insulating material housing has a conductor introduction opening leading to the associated conductor insertion opening. Thereby, a conductor is inserted into the conductor introduction opening and guided through the conductor insertion opening of the busbar such that the end of the stripped conductor strikes the release section of the retaining element. A force is applied to the release section, which pivots the retaining element relative to the busbar in order to unlock the clamping legs locked at the retaining element in the retaining position. By the spring force of the clamping spring, the clamping legs can then move towards the clamping section of the busbar in order to clamp the inserted electrical conductor between the clamping legs and the busbar. As long as no force is applied to the release section any more, for example when opening the clamping spring by means of a tool or operating element, the retaining element pivots back from the release position into the retaining position. This can be effected by a spring-elastic support of the retaining element relative to the busbar, for example in such a way that the support legs of the clamping spring serve as a support section for the retaining element. However, it is also conceivable that the retaining element itself is made of a spring-elastic material and is supported directly at the busbar.

[0030] More generally, in connection with the present application, the word "a" should not be construed as a numeral unless otherwise specifically defined, but rather as an indefinite article having the meaning "at least one". The feature of specifying "exactly one" can clearly denote "one" as a numeral. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be described in detail below by way of example with reference to the embodiments. The drawings show:

[0032] Figure 1 A perspective view showing a first embodiment of a spring force clamping connection;

[0033] Figure 2 Showing Figure 1 A side view of the spring force clamping connection in

[0034] Figure 3 Showing Figure 1 and Figure 2 A side sectional view of the spring force clamping connection in

[0035] Figure 4 A front sectional view showing the spring force clamping connection in the holding position;

[0036] Figure 5 Showing the Figure 1 A perspective view of the spring force clamping connection in the release position;

[0037] Figure 6 Showing the Figure 5 A side view of the spring force clamping connection in the release position;

[0038] Figure 7 Showing Figure 6 A side sectional view of the spring force clamping connection in

[0039] Figure 8 Showing the Figure 5 A front sectional view of the spring force clamping connection in the release position;

[0040] Figure 9 A side view showing the holding element;

[0041] Figure 10 Showing Figure 9 A front view of the holding element in

[0042] Figure 11 Showing Figure 9 and Figure 10 A perspective view of the holding element in

[0043] Figure 12 A top view showing the holding element;

[0044] Figure 13 Shows a second embodiment of a spring force clamping connection in the holding position;

[0045] Figure 14 Shows Figure 13 a side view of the spring force clamping connection in;

[0046] Figure 15 Shows Figure 13 a side sectional view of the spring force clamping connection in;

[0047] Figure 16 Shows Figures 13 to 15 a front sectional view of the spring force clamping connection in;

[0048] Figure 17 Shows the Figure 13 spring force clamping connection in the release position in a perspective view;

[0049] Figure 18 Shows the Figure 15 spring force clamping connection in the release position in a side sectional view;

[0050] Figure 19 Shows the Figure 18 spring force clamping connection in the release position in a front sectional view;

[0051] Figure 20 Shows a perspective rear view of the clamping spring for the second embodiment of the spring force clamping connection;

[0052] Figure 21 Shows Figure 20 a side view of the clamping spring in;

[0053] Figure 22 Shows Figure 20 and Figure 21 a rear view of the clamping spring in;

[0054] Figure 23 Shows the Figure 20 and Figure 21 clamping spring in the release position in a front view;

[0055] Figure 24 Shows a perspective view of the holding element;

[0056] Figure 25 Shows Figure 24 a top view of the holding element in;

[0057] Figure 26 Shows Figure 24 a side view of the holding element in;

[0058] Figure 27 Front view of the retaining element in Figure 24 ;

[0059] Figure 28 Shows Figure 13 Stereo longitudinal sectional view of a variant of a second embodiment of the spring force clamping connection in

[0060] Figure 29 Shows Figure 28 Stereo side view of the spring force clamping connection without a busbar in

[0061] Figure 30 Shows a third embodiment of the spring force clamping connection with a busbar and a clamping spring;

[0062] Figure 31 Shows Figure 30 Side view of the spring force clamping connection in

[0063] Figure 32 Shows Figure 31 Lateral sectional view of the spring force clamping connection in

[0064] Figure 33 Shows Figures 30 to 32 Front sectional view of the spring force clamping connection in

[0065] Figure 34 Shows the spring force clamping connection in the release position in Figure 30 Stereo view of the third embodiment of the spring force clamping connection;

[0066] Figure 35 Shows the spring force clamping connection in the release position in Figure 34 Side view of the spring force clamping connection in

[0067] Figure 36 Shows Figure 34 Lateral sectional view of the spring force clamping connection in

[0068] Figure 37 Front sectional view of the spring force clamping connection in the release position;

[0069] Figure 38 Stereo view of a busbar with flanges that delimit the wire insertion opening on three sides;

[0070] Figure 39 Shows Figure 38 Lateral sectional view of the busbar in

[0071] Figure 40 Stereo view of the retaining element;

[0072] Figure 41 Shows Figure 40 Top view of the retaining element in;

[0073] Figure 42 Front view showing the retaining element;

[0074] Figure 43 Side view showing the retaining element;

[0075] Figure 44 Shows the fourth embodiment of the spring force clamping connection;

[0076] Figure 45 Shows Figure 44 Side view of the spring force clamping connection in;

[0077] Figure 46 Side sectional view showing the spring force clamping connection;

[0078] Figure 47 Front sectional view showing the spring force clamping connection;

[0079] Figure 48 Shows in the released position Figure 44 Stereogram of the spring force clamping connection in;

[0080] Figure 49 Side view showing the spring force clamping connection;

[0081] Figure 50 Side sectional view showing the spring force clamping connection;

[0082] Figure 51 Shows Figure 50 Front sectional view of the spring force clamping connection in;

[0083] Figure 52 Stereogram showing the retaining element;

[0084] Figure 53 Top view showing the retaining element;

[0085] Figure 54 Side view showing the retaining element;

[0086] Figure 55 Front view showing the retaining element;

[0087] Figure 56 Shows a terminal with an insulating material housing and a spring force clamping connection housed therein;

[0088] Figure 57 Shows Figure 56 Side sectional view of the terminal in;

[0089] Figure 58 An enlarged partial view showing a terminal with a spring-force clamping connection in the released position. Detailed Description

[0090] Figure 1 A perspective view showing a first embodiment of a spring-force clamping connection 1 having a busbar 2, a clamping spring 3, and a retaining element 4. The clamping spring 3 is configured as a U-shaped bent leg spring. The clamping spring has a support leg 5 that supports on the busbar 2 and transitions into a spring bow 6. A clamping leg 7 is connected to the spring bow 6 and extends toward the busbar 2 beside the support leg 5.

[0091] The busbar 2 has a wire insertion opening 8 that is introduced into the busbar plane and into which the clamping leg 7 sinks. In addition, the busbar 2 has a clamping section 9 that can be configured, for example, as a material projection protruding from the plane of the busbar 2 as shown. An electrical wire can thus be clamped between the clamping edge 10 of the clamping leg 7 and the clamping section 9.

[0092] It is clear that the retaining element 4 extends away from the plane of the busbar 2 on the side of the busbar 2 opposite to the spring bow 6 of the clamping spring 3. The retaining element 4 has a release section 11 that is arranged approximately parallel to the plane of the busbar 2 and at a distance therefrom. The release section 11 has a locking profile that is formed, for example, by a locking projection 12 protruding from the plane of the release section 11. When the clamping leg is displaced toward the support leg 5 against the spring force of the clamping spring 3 in the shown locked retaining position, the locking projection 12 forms a stop for the free end of the clamping leg 7.

[0093] The release section 11 is oriented transversely to the wire insertion direction L such that an electrical wire inserted through the wire insertion opening 8 from above strikes the release section 11. Thereby, a force is applied to the release section 11 that displaces the release section away from the busbar 2 and pivots the retaining element 4 that is elastically supported directly or indirectly at the busbar 2. Thereby, the stop for the locking projection 12 of the clamping leg 7 is removed, and the clamping leg 7 can be displaced from the retaining position locked at the locking profile 12 in the open retaining position to a release position that unlocks the clamping leg 7 from the retaining element 4. Thereby, the clamping edge 10 of the clamping leg 7 can spring toward the clamping section 9 of the busbar 2 to clamp the electrical wire between the clamping edge 10 and the clamping section 9.

[0094] In the illustrated holding position, the free end of the clamping leg 7 is locked at the locking projection 12 by means of its clamping edge 10, which projects from the plane of the release section 11 towards the busbar 2 and forms a stop for the clamping leg 7.

[0095] Figure 2 shown Figure 1 Side view of the spring-force clamping connection 1 in. It is clear here that the holding element 4 is supported on the upper side of the busbar 2 by means of the support plate 13. Starting from the support plate 13, the pivot section 14 extends through the wire insertion opening 8 of the busbar 2 and, after bending at a distance from the busbar 2, transitions into the release section 11. The support leg 5 of the clamping spring 3 abuts against the pivot section 14 such that the pivot section 14 is between the support leg 5 and the busbar 2. Thereby, the holding element 4 is held at the busbar 2 by the spring force of the clamping spring 3 via the support leg 5. The support leg 5 can be bent, for example, in the region of the abutment at the busbar 2 in order to thereby provide a form-fitting connection between the clamping spring 3 and the busbar 2 and for the holding element 4.

[0096] Figure 3 shown Figure 1 and Figure 2 Lateral sectional view of the spring-force clamping connection 1 in. Here, the support of the holding element 4 at the busbar 2 and the clamping spring 3 is clearly visible. Furthermore, it is clear that the free end of the clamping spring 7 is locked at the locking projection 12 projecting towards the busbar 2 in order to prevent the clamping leg 7 from springing back into the clamping section 9. Thereby, the clamping spring 3 remains in the self-retaining open holding position.

[0097] Figure 4 Front sectional view showing the spring-force clamping connection 1 in the holding position. Visible is that, when viewed in the width of the release section 11 of the holding element 4, there are two locking projections 12 spaced apart from each other. The locking projections are in the edge region of the upper side of the release section 11 facing the busbar 2. Thereby, the clamping leg 7 is locked symmetrically at two spaced-apart locking sites at its free end.

[0098] Figure 5 shown in the released position Figure 1 Stereogram of the spring-force clamping connection 1 in. Visible is that the clamping leg 7 springs towards the clamping section 9. For this, a release force is applied to the release section 11, which pivots away from the busbar 2 in order to thereby remove the locking of the free end of the clamping leg 7 by the locking profile 12. Thereby, the clamping leg 7 can be pivoted into the release position by the force of the clamping spring 3 stored in the spring bow 6 in order to clamp an electrical wire, not shown, between the clamping section 9 and the clamping edge 10 of the clamping leg 7.

[0099] Furthermore visible is that the retaining element 4 is formed in the pivot section 13 by two connecting tabs spaced apart from one another. Thereby, a spring is elastically injected into the pivot section 14 of the retaining element 4. The tab-like configuration of the pivot section 14 is at least in the transition section to the release section 11.

[0100] Figure 6 Shows in the released position Figure 5 Side view of the spring-force clamping connection 1. It is clear that the clamping edge 10 of the clamping leg 7 now abuts against the clamping section 9 of the busbar 2 and has overcome the stop formed by the locking profile 2.

[0101] Figure 7 Shows Figure 6 Lateral sectional view of the spring-force clamping connection 1. Visible is that the support plate 13 of the retaining element 4 is supported on the upper side of the busbar 2 and the tab-like pivot section 14 extends from the support plate 13 through the wire insertion opening 8. The pivot section 14 transitions into the release section 11 after being elastically bent by the spring, and the release section is spaced from the lower side of the busbar 2 and extends substantially parallel to the plane of the busbar 2.

[0102] Figure 8 Shows in the released position Figure 5 Front sectional view of the spring-force clamping connection 1. It becomes clear again from this that the free end of the clamping leg 7 is unlocked from the stop formed by the locking profile 12. Furthermore visible is that the clamping leg 7, the support leg 5, and the pivot section 14 are inserted into the wire insertion opening 8 delimited by two connecting tabs of the busbar 2 spaced apart from one another.

[0103] Figure 9 Side view of the retaining element 4. Visible is that the support plate 13 is arranged almost parallel to and offset with a spacing from the release section 11. The support plate 13 is elastically connected to the release section 11 via the pivot section 14.

[0104] It is also clear that a locking profile 12 in the form of a material bulge is formed by the release section 11, and the material bulge is formed from the sheet material and bent out from the plane of the release section 11 towards the support plate 13. It can be present in the edge region of the release section 11, as shown. It is also conceivable that, for example, such a material bulge projects from and bends out from the release section 11 in the middle of the width.

[0105] Figure 10 Shows Figure 9Front view of the retaining element 4 therein. As can be seen here, the support plate 13 has a greater width than the pivot section 14 and the release section 11 connected thereto. Similarly, two spaced-apart material protrusions are visible in the edge region of the release section 11, and the material protrusions bend from the plane of the release section 11 towards the support plate 13.

[0106] Figure 11 Shows Figure 9 And Figure 10 Perspective view of the retaining element 4 therein. From Figure 12 The retaining element 4 is visible in a top view in

[0107] It is clear here that the support plate 13 transitions into the pivot section 14 with a bent portion, and the pivot section is formed by two spaced-apart connecting pieces in its bent region. Thereby, a spring-elastic pivot arm is formed. In addition, it can be seen that the locking profile 12 is formed as a material protrusion of the sheet material that protrudes from the sheet material and bends out from the plane of the release section 11. Two spaced-apart support fingers 15 are connected in the root region of the support plate 13 at the transition to the pivot section 14, and the support fingers are part of the support plate 13.

[0108] Figure 13 Shows a second embodiment of the spring-force clamping connection 1 in the retaining position. Here, the busbar 2 also has a wire insertion opening 8, and the busbar has a lower side away from the bent clamping section 9 on the narrow side of the wire insertion opening 8. The clamping spring 3 is a U-shaped bent leg spring, and the leg spring is inserted into the wire insertion opening 8 by means of its support legs 5 and clamping legs 7. Opposite to the spring bow 6, a retaining element 4 is arranged at a distance from the lower side of the busbar 2. The retaining element has two spaced-apart side walls 16, and the free end of the clamping leg 7 with a clamping edge 10 is arranged between the side walls. Locking protrusions for forming the locking profile 12 are bent out on the inner sides of the side walls 16, and the locking protrusions form a stop for the free end of the clamping leg 7 and lock it in the open retaining position.

[0109] In the lower edge region, the side walls 16 have bottom sections 17 that protrude towards each other, and the bottom sections serve as supports for the release section 11. The release section 11 is arranged at a distance from the wire insertion opening 8 almost parallel to the plane of the busbar 2, such that the electric wire to be clamped inserted between the clamping section 9 and the clamping leg 7 collides with the release section 11 when inserted into the wire insertion opening 8. Thereby, a release force is applied to the release section 11 and the retaining element 4 pivotally connected to the release section by the electric wire.

[0110] The release section 11 is placed on one side on the bottom section 17 and is fixed and clamped on the side opposite to the bottom section 17 by means of the support protrusion 18. The support protrusion 18 is bent out from the side wall 16 as a material bulge towards the release section 11.

[0111] Furthermore, it can be seen that the release section 11 transitions into the pivot section 14 after bending. The pivot section is also connected to the holding element 4 by means of a support protrusion 19 bent out from the side wall 16 and on the opposite side by an end wall 20 that is not yet visible.

[0112] Figure 14 shown Figure 13 A side view of the spring-force clamping connection 1 is shown. Here, it is clear that the pivot section 14 and the release section 11 connected to it after bending are formed as an extension of the support leg 5 from the clamping spring 3. The holding element 4 is in form-fitting connection with the pivot section 14 and the release section 11 by means of the end wall 20 and the support protrusion 19 spaced therefrom, and by means of the bottom section 17 and the support protrusion 18 arranged at a distance beside it.

[0113] It can be seen that the clamping leg 7 extends from above into the inner space of the holding element 4 in the holding position and abuts against the side wall 16. Here, the locking protrusion 12 extending into the inner space of the holding element 4 forms a locking stop for the free end of the clamping leg 7. Furthermore, it can be seen that the holding section 21 is bent from the pivot section 14. The holding section extends through an opening in the end wall 20 of the holding element 4 in order to form an additional form-fitting between the pivot section 14 and the holding element 4.

[0114] The transition between the support leg 5 and the clamping spring 3 sunk into the wire insertion opening 8 of the bus bar 2 provides a spring-elastic pivot area so that the holding element 4 is pivotable.

[0115] Figure 15 shown Figure 14 A side sectional view of the spring-force clamping connection 1 is shown. Here, the abutment of the free end of the clamping leg 7 against the locking protrusion 12 protruding from the inner side of the side wall 16 in the holding position becomes clear again, where the inner side of the side wall 16 faces the inner space of the holding element 4. Furthermore, it can be seen that the holding element 4 is in form-fitting connection with the clamping spring 3 by means of a delimiting part formed by the bottom section 17 and the adjacent support protrusion 18, and by the end wall 20 and the adjacent support protrusion 19.

[0116] Furthermore, it is clear that the holding section 21 is bent out of the inner space of the holding element 16 from the pivot section 14, where the holding section 21 extends into the opening in the end wall 20.

[0117] Figure 16 shownFigures 13 to 15 Front view cross-section of the spring-force clamping connector 1 in Figures 13 to 15 . It is clear here that the clamping legs 7 and the support legs 5 or the pivot sections 15 connected thereto are inserted through the wire insertion opening 8 and their width matches the width of the wire insertion opening 8. The width of the clamping legs 7 can correspond to the width of the wire insertion opening 8. It is also conceivable that the clamping legs 7 have a smaller width in the region of the wire insertion opening 8 and then widen again.

[0118] Figure 17 Shows the Figure 13 Stereo view of the spring-force clamping connector 1 in Figure 13 in the released position. Here, after the holding element 4 pivots by means of a release force acting on the release section 11, the clamping legs 7 spring towards the clamping section 9 in order to remove the locking of the clamping legs 7.

[0119] It can also be seen that the pivot section 14 in turn has two connecting tabs in order to thereby cause a softer spring characteristic for the spring-elastic pivot support of the holding element 4.

[0120] Figure 18 Shows the Figure 15 Side view cross-section of the spring-force clamping connector 1 in Figure 15 in the released position. Here, the clamping legs 7 are unlocked from the holding element 4 in such a way that the electric wire to be clamped (not shown) is inserted into the wire insertion opening 8 and strikes against the release section 11. Thereby, a release force is applied to the release section 11, which causes the release section 11 together with the holding element 4 to pivot away from the busbar 2 in order to increase the spacing between the locking protrusions 12 below the busbar 2. Thereby, the locking of the clamping legs 7 formed by the locking protrusions 12 is removed, so that the clamping legs can spring towards the clamping section 9 as shown.

[0121] Figure 19 Shows the Figure 18 Front view cross-section of the spring-force clamping connector 1 in Figure 18 in the released position. It can be seen here that the support legs 5 sink into the wire insertion opening 8 by means of a bent section and transition into the pivot section 14. It is also clear that the pivot section 14 has an opening which is delimited by two connecting tabs, where the holding section 21 is bent out of the opening.

[0122] Figure 20 Stereo rear view of the clamping spring 3 for the second embodiment of the spring-force clamping connector 1. It is clear that the support legs 5 transition into the pivot section 14 in a narrower bent region. The opening delimited by the connecting tabs has a holding section 21 at its lower edge, which is freely cut from the sheet material of the pivot section 14 as a material protrusion and bent out of the plane of the opening. There is a bend in the transition between the pivot section 14 and the release section 11, and the bend is approximately 90° to 120°.

[0123] Figure 21 Shows Figure 20 A side view of the clamping spring 3 in []. It is clear that the clamping spring 3 terminates on one side in a spring bow 6 in its height and on the opposite side in a release section 11. Also clearly visible is the backward-bent transition between the support leg 5 and the pivot section 14.

[0124] Figure 22 Shows Figure 20 And Figure 21 A rear side view of the clamping spring in []. Here, the opening in the pivot section 14 together with the bent-out retaining section 21 is clearly visible.

[0125] Figure 23 Shows the [] in the release position Figure 20 And Figure 21 A front view of the clamping spring 3 in []. The clamping leg 7 pivots upward away from the support leg 5 by means of its clamping edge 10. In the holding position, the support leg 7 pivots in the opposite direction towards the support leg 5 and at least partially covers the opening in the pivot section 14 in the front view.

[0126] Figure 24 Shows a perspective view of the holding element 4, which is configured as a U-shaped cage having two mutually opposed side walls 16 and end walls 20 connecting the side walls 16 to each other. At the upper edge region of the front part of the side walls 16, the locking protrusions 12 are respectively cut free and bent towards each other into the interior space.

[0127] Figure 25 Shows Figure 24 A top view of the holding element 4 in []. Here, the support protrusions 18, 19 extending from the inner sides of the mutually opposed side walls 16 into the interior space of the holding element 4 are visible. It is also clear that the end wall 20 is inclined at an obtuse angle relative to the plane of the bottom section 17. The bottom section 17 extends towards each other at the lower edges of the side walls 16 in order to thus form a support for the release section 11.

[0128] Figure 26 Shows Figure 24 A side view of the holding element 4 in []. Here it is clear that the support protrusion 18 is arranged directly above the bottom section 17 in order to clamp the release section 11 between the free end of the support protrusion 18 extending obliquely inwards towards the respective bottom section 17 and the bottom section 17.

[0129] Similarly, next to the end wall 20 there are, for example, material protrusions extending obliquely downwards for forming support protrusions 19 extending into the interior space of the holding element 4. Thereby, the pivot section 14 is at least partially clamped between the end wall 20 and the support protrusion 19.

[0130] Figure 27 shows Figure 24 Front view of the retaining element 4 in this. Here, the support projections 18, 19 that slope inwards from the inside of the side wall 16 towards the bottom of the retaining element 4 can be seen.

[0131] Also visible is the support opening 22 in the upper region of the end wall 20. It is used to accommodate the retaining section 21 of the clamping spring 3 that sinks into the support opening 22, so as to achieve a form-fitting support of the retaining element 4 at the clamping spring 3 thereby.

[0132] Figure 28 shows Figure 13 Stereo longitudinal sectional view of a variant of the second embodiment of the spring force clamping connection 1 in this. The structures of the retaining element 4 and the clamping spring 3 are clearly visible as described above.

[0133] The wire insertion opening 8 in the bus bar 2 has a flange 23 in this embodiment. The flange is formed as a material drawing section from the conductive metal material (such as copper alloy) of the bus bar 2 in the forming method, so as to form the wire insertion opening 8 here. The clamping section 9 is set obliquely to the perpendicular of the plane of the bus bar 2 into the wire insertion opening 8. Thereby, a previous clamping edge is provided for clamping the electrical wire between the end edge formed at the lower edge region and the clamping edge 10 of the clamping leg 7.

[0134] Figure 29 shows without a bus bar Figure 28 Stereo side view of the spring force clamping connection in this. It is clear that the clamping leg 7 is locked at the locking projection 12 in the holding position, and the locking projection extends from the opposite side walls 16 that are spaced apart from each other into the inner space of the retaining element 4.

[0135] Figure 30 shows the third embodiment of the spring force clamping connection 1 with the bus bar 2 and the clamping spring 3. The clamping spring 3 is again configured as a U-shaped bent leg spring, and the support legs 5 and the clamping legs 7 sink into the wire insertion opening 8 of the bus bar 2.

[0136] The retaining element 4 is supported at the bus bar 2, and the retaining element is supported on the upper side of the bus bar 2 by means of the support plate 13. The pivot section 14 extends through the wire insertion opening 8 from the support plate 13 and transitions to the release section 11 after bending. The release section 11 is aligned with the wire insertion opening 8 at a distance from the plane of the bus bar 2. Thereby, in order to clamp the electrical wire inserted into the wire insertion opening 8, it can hit the release section 11 and displace the pivot section 14 away from the clamping leg 7 by means of the release force. The release section 11 and the pivot section 14 are arranged at the longitudinal side edges of the wire insertion opening 8 here.

[0137] It is clear that the lateral pivot section 14 has a locking projection 12 that extends inwardly towards the clamping leg 7, and the locking projection forms a locking profile for locking the clamping leg 7 in the shown holding position at the holding element 4.

[0138] The clamping section 9 extends from the busbar 2 towards the release section 11. The clamping section has a clamping edge for clamping an electrical conductor between the clamping edge and the clamping edge 10 at the clamping leg 7 of the clamping spring 3.

[0139] Figure 31 shown Figure 30 A side view of the spring force clamping connector 1 in. It can be seen therefrom that the pivot section 14 projects downwardly relative to the plane of the busbar 2 to form a side wall that is laterally disposed beside the clamping leg 7. From the pivot section 14, the locking projection 12 is freely cut from the plate material and bent from the plane of the pivot section 14 towards the clamping spring 3.

[0140] Figure 32 shown Figure 31 A lateral sectional view of the spring force clamping connector 1 in. It is clear here that the wire insertion opening 8 is bounded by a flange 23. The flange is open on the side of the pivot section 14.

[0141] Furthermore, it can be seen that the release section 11 is positioned aligned below the wire insertion opening 8 such that an electrical conductor (not shown) inserted between the clamping section 9 and the clamping leg 7 impacts against the release section 11 with its stripped end. By the force acting thereby, the pivot section 14 is displaced laterally away from the clamping leg 7 so as to thereby remove the locking between the locking projection 12 and the clamping leg 7.

[0142] This is clearly visible from Figure 33 in, Figure 33 shown Figures 30 to 32 A front sectional view of the spring force clamping connector 1 in. The locking projection 12 forms a stop for the free edge region of the lower part of the clamping leg 7.

[0143] Figure 34 shown in the released position Figure 30 A perspective view of a third embodiment of the spring force clamping connector 1 in. Here, the clamping leg 7 pivots away from the support leg 5 by the spring force stored in the spring bow 6 such that the free end of the clamping leg 7 bounces towards the clamping section 9 with its clamping edge. In the shown position without an inserted electrical conductor, the clamping edge 10 of the clamping leg 7 can abut against the clamping section 9. The inserted electrical conductor will be fixedly clamped between the clamping section 9 and the clamping edge of the clamping leg 7.

[0144] For the clamping leg 7 to be able to move from theFigure 30 The holding position shown in pivots to a release position visible from Figure 34 In order to remove the stop between the locking projection 12 and the lateral edge region of the clamping leg 7, the pivot section 14 pivots laterally away from the clamping leg 7 by means of a release force applied to the release section 11. Thereby, the locking between the locking projection 12 and the clamping leg 7 is removed. Subsequently, the pivot section 14 can pivot back into the locking position again. This is ensured by the spring elasticity of the holding element 4 formed of sheet material.

[0145] Figure 35 Shown in the release position Figure 34 Side view of the spring-force clamping connection 1. Here, as compared with Figure 31 it can be seen that the clamping leg 7 now has a greater spacing from the support leg 5 than in the holding position.

[0146] Figure 36 Shown Figure 34 Lateral sectional view of the spring-force clamping connection 1. It is clear therefrom that the wire insertion opening 8 is bounded by flanges 23 at one longitudinal side and two end sides. At the end side, the support leg 5 abuts against the flange 23. At the opposite end side, the flange 23 is inclinedly arranged in the wire insertion opening 8 in order to form a clamping section 9 with a clamping edge, at which the electrical wire is clamped. Thereby, the force of the clamping spring 3 is concentrated on the reduced clamping edge and the surface pressure and thus the contact safety is increased. In addition, the electrical wire can be wedged at this clamping edge in order to thus make an undesired pulling out difficult.

[0147] Figure 37 Front sectional view of the spring-force clamping connection 1 shown in the release position. It can be seen therefrom that the flange 23 is present only at one longitudinal side. At the opposite longitudinal side, the flange 23 is open in order to provide space for the pivot section 14 of the holding element 4. It can be seen that the flange 23 is inclined in the region adjacent to the pivot section 14 at the end side against which the support leg 5 abuts and tapers from the bus bar 2 towards the release section 14. This allows a visible inclined position of the pivot section 14 relative to the opposite longitudinal side wall of the flange 21.

[0148] Figure 38 Perspective view of the bus bar 2 with the wire insertion opening 8, which is bounded on three sides by the flange 23. The flange extends downward from the plane of the bus bar 2. The end sides are inclinedly arranged in order to form the clamping section 9. It is also clear that the flange wall is present only at one longitudinal side. In the viewing direction of the opposite side, there is no bounding by the flange 23 (indicated by hatching).

[0149] Figure 39 ShownFigure 38 Side sectional view of the bus bar 2 therein. Among them, the flange 23 that constitutes the end side wall that extends laterally from the plane of the bus bar 2 at the lower side and the oppositely arranged and inclined clamping section 9 becomes clearer. The wire passing opening 8 can be inclined in the upper region and transition into the flange 23.

[0150] Figure 40 Shows a perspective view of the holding element 4, which can be used, for example, for the spring force clamping connection 1 in the third embodiment described above. It can be seen that the support plate 13 is configured in a U shape. The support plate has a longitudinal connecting piece, and two spaced-apart support fingers 15 extend from the longitudinal connecting piece. The support plate 13 forms a plane so as to support on the upper side of the bus bar 2. The pivot section 14 bends from the longitudinal connecting piece of the support plate 13 in the intermediate space between the two support fingers 15. The pivot section 14 then transitions into a release section 11 that is angled with respect to the plane of the pivot section 14. The release section is an acute angle with respect to the plane of the support plate 13 in this embodiment.

[0151] Figure 41 Shows Figure 40 Top view of the holding element 4 therein. It can be seen that the pivot section 14 and the release section 11 extend into the alignment line of the opening by virtue of their inclined arrangement, and the opening is bounded by the longitudinal connecting piece and the support fingers 15 of the support plate 13.

[0152] Figure 42 Front view of the holding element 4 is shown, from which the position of the pivot section 14 and the connected release section 11 that is oriented at an acute angle with respect to the support plate 13 can be obtained. It can also be seen that the locking protrusion 12 extends from the pivot section 14 at a distance from the support plate 13 in the same direction as the support fingers 15 and the release section 11. Relative to the pivot section 14, the support fingers 15, the locking protrusion 12, and the release section 11 all point to the left with their free ends. In the reversed view, all three elements correspondingly point to the right. Their directions are thus the same.

[0153] Figure 43 Side view of the holding element 4 is shown. It can be seen therefrom that the locking protrusion 12 can be inclined with respect to the perpendicular line of the plane of the support plate 13. However, other orientations are also conceivable, such as the horizontal orientation of the locking protrusion 12 together with the inclined position that tapers and widens towards the support leg 5. Thereby, the clamping leg 7 can pivot from the release position towards the support leg 5 into the holding position and slide on the inclined guiding surface of the locking protrusion 12 therein, and the pivot section 14 pivots laterally. As long as the end of the slope, that is, the end of the locking protrusion 12, is reached, the pivot section 14 rebounds again by its spring elasticity, so that the locking protrusion 12 forms a stop for the clamping leg 7.

[0154] Figure 44 The fourth embodiment of the spring force clamping connection 1 with a busbar 2, a U-shaped leg spring 3 and a retaining element 4 is shown. The retaining element 4 is in turn inserted into the wire insertion opening 8 of the busbar 2. The clamping spring 3 together with its support legs 5 and clamping legs 7 is arranged in the wire insertion opening 8. The retaining element 4 can be form-fittingly held at the busbar 2 by the support legs 5. An elastically resilient pivoting section 14 projects from the support plate 13 of the retaining element 4 on one side, and the pivoting section has a locking projection 12 which faces the clamping leg 7. On the opposite side there is another side wall 25 which is bent from the support plate 13 and extends approximately parallel to the pivoting section 14. The clamping leg 7 is arranged between the side wall 25 and the pivoting section 14.

[0155] As can be seen Figure 45 from Figure 44 the side view of the spring force clamping connection 1 in. It is clear that the pivoting section 14 extends laterally next to the clamping leg 7 in the longitudinal direction. The locking projection 12 projects from the pivoting section 14 spaced apart from the busbar 2 (in the viewing direction) towards the clamping leg 7 in order to form a locking profile for the clamping leg 7.

[0156] Figure 46 The side view of the spring force clamping connection 1 is shown and Figure 47 the front cross-sectional view is shown. It is clear here that the side wall 25 projects from the support plate 13 and the clamping leg 7 is arranged next to the side wall. Thereby, the electrical wire 25 can be inserted into the wire insertion opening 8 between the side wall 25 and the opposite pivoting section 14 and between the clamping leg 7 in the holding position and the opposite clamping section 9 substantially perpendicular to the plane of the busbar 2 in the wire insertion direction L.

[0157] Here, a force can be applied laterally to the pivoting section 14 which displaces the pivoting section 14 laterally away from the clamping leg 7 in order to release the locking with the locking projection 12. The opposite side wall 25 can hereby be configured as a rigid mating support. However, a variant is also conceivable in which not only the side wall 25, but also the pivoting section 14 has a locking projection 12 and they are pressed away from each other by the inserted electrical wire 24. This can be achieved, for example, by an inclined position in which the pivoting section 14 and the side wall 25 or sections thereof taper in the wire insertion direction L. However, the force applied to at least the pivoting section 14 and / or the locking projection 12 during the insertion of the electrical wire 24 is sufficient to displace the pivoting section 14 laterally. A separate release section arranged transversely to the wire insertion direction L, as shown in the previous embodiment, is advantageous, but not absolutely necessary. The release section can also be provided by the pivoting section 14 itself.

[0158] Figure 48Shows the spring - force clamping connector 1 in the release position Figure 44 Perspective view of the spring - force clamping connector 1 in Figure 44 . Here, the clamping legs 7 are now pivoting away from the support legs 5 towards the clamping section 9.

[0159] This is clearer from Figure 49 and Figure 50 which show a side view and a lateral sectional view of the spring - force clamping connector 1.

[0160] Figure 51 Shows the front - sectional view of the spring - force clamping connector 1 in the release position Figure 50 It can be seen that the locking projection 12 projects from the pivoting section 14 into the intermediate space between the opposing side wall 25 and the pivoting section 14. To release the locking of the clamping leg 7 in the holding position at the locking projection 12, only a very small deflection of the pivoting section 14 is required, which can be achieved by the force laterally applied to the pivoting section 14 by inserting the electrical conductor 24.

[0161] Figure 52 Shows a perspective view of the holding element 4, which has a support plate 13 from which two opposing walls, namely the side wall 25 and the pivoting section 14 with the locking projection 12, project. The locking projection 12 projects obliquely from the plane of the pivoting section 14 in the direction of the wire insertion direction L, i.e., in a top - down view. Thereby, the inserted electrical conductor 24 can slide along the locking projection 12 and apply a force to the pivoting section 14, which causes the pivoting section 14 to pivot away from the opposing side wall 25 and thus unlocks the clamping leg 7.

[0162] Figure 53 Shows a top view of the holding element 4. It is clearly visible from this the locking projection 12 projecting from the plane of the pivoting section 14 towards the opposing side wall 25.

[0163] Figure 54 Shows a side view of the holding element 4, from which the advantageous inclined position towards the end edge of the clamping section 9 can be seen. Thereby, the pivoting section 14 can be matched to the inclined clamping section 9 in order to provide an as - well - bounded - as - possible guiding space for the electrical conductor 24 and an as - small - as - possible intermediate space.

[0164] Figure 55 Shows a front view of the holding element 4, from which the wall sections in the form of the pivoting section 14 and the side wall 25, which project from the support plate 13 and are spaced apart from each other, can be seen.

[0165] Figure 56Shows a terminal 26 with an insulating material housing 27, into which at least one spring force clamping connection 1 is inserted. The insulating material housing 27 has a wire inlet opening 28, which leads to the associated spring force clamping connection 1. The wire inlet opening 28 leads in the interior space of the insulating material housing 27 to a wire insertion opening 8 in the busbar 2. Thereby, an electrical wire (not shown) is led to the clamping site, which is formed by a clamping section 9 and clamping legs 7. The alignment line of the wire inlet opening 28 leads to a release section 11, which projects into the alignment line. Thereby, the electrical wire inserted into the wire inlet opening 28 and passed through the wire insertion opening 8 strikes against the release section 11 in order to pivot the retaining element 4 away from the clamping leg 7. Thereby, the shown retaining position of the clamping spring 3 is removed. Additionally, the insulating material housing 27 can have an operating opening 29, which leads to the associated clamping leg 7 of the clamping spring 3 of the spring force clamping connection 1. By introducing an operating tool into the operating opening 29, a force for opening the clamping spring 3 can be applied to the clamping leg 7, which pivots the clamping leg 7 towards the support leg 5. It is conceivable that an operating element is inserted into the operating opening 29, such as, for example, a movable operating press piece, a pivotable operating lever, etc.

[0166] In the shown embodiment, the terminal 26 is configured as a rail-mounted terminal, wherein a plurality of spring force clamping connections 1 are present on a common busbar 2 in order to electrically connect at least two electrical wires clamped at the respective spring force connection terminals 1 to one another.

[0167] Figure 57 Shows Figure 56 A side sectional view of the terminal 26 shown therein. Here, the wire insertion direction L of the electrical wire becomes clear, which can be inserted into the wire inlet opening 28 in the longitudinal extension direction of the wire inlet opening 28. The wire insertion opening 8 and the release section 11 are aligned with the wire inlet opening 28. The electrical wire 24 inserted into the wire inlet opening 28 can thus apply a release force to the release section 11 in the direction of the wire insertion direction L. Thereby, the associated retaining element 4 pivots away from the clamping leg 7 in order to thus remove the locking. The clamping leg 7 can thus pivot from the shown retaining position into a release position by the force of the clamping spring 3.

[0168] The busbar 2 can furthermore have a bridging contact part 30 for clamping a bridging piece or other contact elements, which is inserted into the busbar 2 through a bridging channel 31. In order to clamp the bridging contact part, a bridging spring 32 can be hooked into the busbar in order to form the bridging contact part 30.

[0169] Figure 58Shows an enlarged partial view of the terminal 26, where the spring-loaded clamping connector 1 is now in the released position. It is clear that the clamping leg 7 pivots from the locked position through the holding leg 4 towards the clamping section 9 in order to thereby clamp an electrical conductor (not shown) between the clamping section 9 and the clamping leg 7.

[0170] List of reference numerals:

[0171] 1 Spring-loaded clamping connector

[0172] 2 Busbar

[0173] 3 Clamping spring

[0174] 4 Holding element

[0175] 5 Support leg

[0176] 6 Spring bow

[0177] 7 Clamping leg

[0178] 8 Wire insertion opening

[0179] 9 Clamping section

[0180] 10 Clamping edge

[0181] 11 Release section

[0182] 12 Locking projection

[0183] 13 Support plate

[0184] 14 Pivoting section

[0185] 15 Support finger

[0186] 16 Side wall

[0187] 17 Bottom section

[0188] 18 Support projection

[0189] 19 Support projection

[0190] 20 End wall

[0191] 21 Holding section

[0192] 22 Support opening

[0193] 23 Flange

[0194] 25 Side wall

[0195] 26 Terminal

[0196] 27 Insulating material housing

[0197] 28 Wire introduction opening

[0198] 29 Operation opening

[0199] 30 Bridging member contact portion

[0200] 31 Bridging member channel

[0201] 32 Bridging member contact portion

[0202] L Wire insertion direction

Claims

1. A spring force clamping connector (1), comprising: a busbar (2) having a conductor insertion opening (8) for inserting an electrical conductor to be clamped to a clamping section (9) of the busbar (2), - a clamping spring (3), comprising: a supporting leg (5) which bears against the busbar (2); a clamping leg (7) which has a clamping edge (10) for clamping an electrical conductor inserted into the conductor lead-through opening (8) at a clamping point formed by the clamping section (9) and the clamping edge (10); and a spring bow (6) which connects the supporting leg (5) to the clamping leg (7), It is characterized in that On the lower side of the busbar (2) opposite to the upper side of the busbar (2) facing the spring bow (6), a holding element (4) is movably hinged to the busbar (2), wherein the holding element (4) has a locking contour (12) which is configured to lock a clamping leg (7) deflected toward the support leg (5) into an open holding position against a spring force, and wherein the holding element (4) has a release section (11), wherein the movable support of the holding element (4) cooperates with the position of the release section (11) so that when an electrical conductor is inserted into the conductor insertion opening (8) and force-coupled with the release section (11), the holding element (4) is displaced from a holding position in which the clamping leg (7) is locked to the locking contour (12) in the open holding position to a release position in which the clamping leg (7) is unlocked from the holding element (4).

2. The spring force clamping connection (1) according to claim 1, It is characterized in that The release section (11) of the retaining element (4) is spaced apart from an insertion plane formed by the conductor insertion opening (8) and is oriented parallel to the insertion plane.

3. The spring force clamping connection (1) according to claim 1, It is characterized in that The retaining element (4) has: a side wall (16) arranged beside the wire insertion opening (8) along the wire insertion direction (L), and the side wall extends away from the plane of the busbar (2); A locking projection (12) is provided for forming the locking contour, and the retaining element is movably mounted relative to the busbar (2).

4. The spring force clamping connection (1) according to claim 3, It is characterized in that The retaining element (4) has a bottom section (17) which projects transversely from the side wall (16) and provides the release section (11).

5. The spring force clamping connection (1) according to claim 3 or 4, It is characterized in that The retaining element (4) has an end wall (20) which extends laterally away from the side wall (16) and is movable relative to the busbar (2).

6. A spring force clamping connection (1) according to any one of the preceding claims, It is characterized in that The support leg (5) has a holding section (21) extending from the direction of the spring bow (6) through the conductor insertion opening (8), the holding section being connected to the holding element (4) and supporting the holding element (4) on the busbar (2) in a spring-elastic and movably manner.

7. Spring force clamping connection (1) according to claims 5 and 6, It is characterized in that The holding section (21) of the supporting leg (5) is supported on the holding element (4) between a supporting projection (17) of a side wall (16) of the holding element (4) and the end wall (20) of the holding element (4).

8. A spring force clamping connection (1) according to any one of the preceding claims, It is characterized in that The retaining element (4) comprises two side walls (16) lying opposite one another, a bottom section (17) projecting from the side walls (16) toward one another, an end wall (20) extending between the side walls (16) transversely to the side walls (16) and the bottom section (17), and a bottom plate, wherein the bottom plate is arranged between the side walls (16), supported on the bottom section (17) and fixed to the side walls (16) by means of a supporting projection (19), and wherein the bottom plate forms the release section (11) and is supported on the end wall (20) by means of a supporting region bent toward the busbar (2).

9. A spring force clamping connection (1) according to any one of the preceding claims, It is characterized in that The wire lead-through opening (8) of the busbar (2) has a flange (23) which extends at the end side of the wire lead-through opening (8) from a plane of the busbar (2) formed by the wire lead-through opening (8) toward the release section (11) and forms the clamping section (9).

10. The spring force clamping connection (1) according to any one of the preceding claims, It is characterized in that The conductor lead-through opening (8) of the busbar (2) has a collar (23) which partially or completely delimits the conductor lead-through opening (8) and extends from a plane of the busbar (2) formed by the conductor lead-through opening (8) toward the release section (11).

11. The spring force clamping connection (1) according to any one of the preceding claims, It is characterized in that The clamping section (9) is formed on the collar (23).

12. The spring force clamping connection (1) according to any one of the preceding claims, It is characterized in that The busbar (2) has a plurality of wire insertion openings (8), each of which has a clamping spring (3) arranged thereon, wherein a retaining element (4) engages at least one of the wire insertion openings (8).

13. A connecting terminal (26), comprising an insulating material housing (27) and a spring force clamping connection (1) according to any of the preceding claims in the insulating material housing (27), wherein the insulating material housing (27) has a wire insertion opening (28) leading to an associated wire insertion opening (8).

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