Spring force clamping connection piece and connection terminal

Abstract

The invention relates to a spring-force clamping connection for connecting electrical conductors by means of a spring force, the spring-force clamping connection having at least one busbar and a clamping spring, the clamping spring having a clamping leg with a clamping edge for clamping the electrical conductors to a contact section of the busbar, the clamping spring has a retaining element which is configured to retain the clamping leg in the open position. The invention further relates to a connection terminal having such a spring-loaded clamping connection.

Description

Technical Field

[0001] The present invention relates to a spring force clamping connector for connecting electrical conductors by means of spring force, wherein the spring force clamping connector has at least one busbar and a clamping spring, the clamping spring having clamping legs with clamping edges for clamping the electrical conductors to a contact section of the busbar, and the clamping spring having a retaining element configured to hold the clamping legs in an open position. Furthermore, the present invention relates to a terminal block having such a spring force clamping connector. Background Art

[0002] Such a terminal block is known from DE 10 2020 119 372A1. This relates to a terminal block that automatically connects the electrical conductors to be clamped when the electrical conductors to be clamped are inserted into the terminal block. By inserting the electrical conductors, the clamping legs of the clamping spring that are held in the open position are automatically released and thereby cause clamping of the electrical conductors. Summary of the Invention

[0003] Based on this, the object of the present invention is to provide a further improved spring force clamping connector and terminal block.

[0004] The object is achieved in a terminal block of the type mentioned at the beginning in such a way that the clamping spring is formed from a spring plate into a frame, and an internal space is formed in the frame, in which at least partially or can be at least partially provided with a actuating element for actuating the clamping legs into the open position. In this way, the operability and reliability of the terminal block for automatically connecting the electrical conductors to be clamped can be improved. Furthermore, due to the feasibility of at least partially arranging the actuating element in the internal space of the frame, the spring force clamping connector and the terminal block formed thereby can be designed in a particularly compact structure. Therefore, different from the prior art, the clamping spring is shaped in a special way, that is, a frame is formed from a spring plate, and the mentioned internal space is formed in the frame. The spring plate can be formed (bent) into a frame by multiple bends.

[0005] The actuating element can be configured as a pivotable actuating lever or actuating push piece, in particular as an actuating push piece movably supported in an actuating channel of the insulating material housing of the terminal block. For example, the actuating push piece can be linearly movably arranged in the actuating channel. By means of the actuating element, the clamping legs can be transferred to the open position against the spring force of the clamping spring during manual actuation. In the open position, the clamping legs can then be held by the retaining element, in particular without additionally manually actuating the actuating element, so that electrical conductors can be introduced at any time without special force consumption.

[0006] The clamping leg and the contact section of the busbar can together form a clamping site for clamping an electrical conductor between the clamping leg and the contact section. In the open position, at least the clamping edge of the clamping leg pivots away from the contact section of the busbar. The clamping leg can pivot, for example, between the open position and the clamping position, in which open position the electrical conductor can move freely between the clamping leg and the contact section, and in which clamping position the clamping leg clamps the electrical conductor at the contact section.

[0007] The retaining element can act directly on the clamping leg, for example, to hold the clamping leg in the open position. Thus, for example, a first locking element can be provided at the clamping leg and a second locking element can be provided at the retaining element, where the first locking element and the second locking element can be locked to each other in the open position. The retaining element can be configured as a protruding locking arm. The second locking element can be configured as a locking projection or a locking hook. The first locking element can be configured as a locking edge or a locking opening.

[0008] The retaining element can exist as a separate component, which is fastened, for example, to the insulating material housing of the terminal block, the busbar or other components.

[0009] According to an advantageous design of the invention, the retaining element is integrally formed from the material of the clamping spring. This has the advantage that the retaining element can be produced together directly during the forming and bending process of the clamping spring. Thereby, there is no need to install the retaining element separately.

[0010] According to an advantageous design of the invention, the actuating element is positively coupled to the clamping spring. The actuating element can be positively coupled to the clamping leg in particular. In this way, the actuating element positively participates in the specific movement of the clamping spring or rather the clamping leg. In particular, this allows the user to simply distinguish whether the clamping spring is in the clamping position or the open position, which can be seen, for example, from the different positions of the actuating element relative to the insulating material housing. For example, the actuating element configured as an actuating press piece can be set deeper in the actuating channel of the insulating material housing in the open position than in the clamping position.

[0011] According to an advantageous design of the invention, the actuating element sinks into the interior space of the frame at least in the open position. Here, a part of the actuating element can protrude from the interior space or the area surrounded by the frame. At least in the open position, the actuating element can be arranged more than 30% or more than 40% or more than 50% in the interior space, that is, surrounded by the frame.

[0012] According to an advantageous design of the present invention, the actuating element has at least one positive-locking element, and the clamping spring has at least one second positive-locking element, which is configured as a mating part of the first positive-locking element, wherein the actuating element is positively coupled to the second positive-locking element of the clamping spring via its first positive-locking element. In this way, it is possible to particularly effectively achieve not only the aforementioned mandatory coupling of the actuating element and the clamping spring, but also an effective force transmission of the actuating force from the actuating element to the clamping spring without skew. For example, one of the positive-locking elements can be configured as a protruding projection and the other positive-locking element can be configured as an elongated hole for receiving the projection. Here, the projection can be guided in the elongated hole when the actuating element is actuated.

[0013] According to an advantageous design of the present invention, the spring-force clamping connection has a release element with a release section, by means of which the clamping leg held at the holding element in the open position can be released from the holding element when the electrical conductor to be clamped exerts an actuating force on the release section. This allows the clamping leg to be automatically released from the holding element by inserting the electrical conductor. The release section can be pressurized by a separate tool, i.e., a component of the terminal, such as the actuating element, or directly via the introduced electrical conductor itself, and thereby the release of the clamping leg from the holding element is achieved. By means of the release element, the clamping leg held at the holding element in the open position can be released from the holding element by exerting pressure on the release section in the wire-introduction direction of the electrical conductor to be connected.

[0014] According to the design of the spring-force clamping connection, the release element can be configured as part of the clamping spring, for example as a release element integrally formed with the clamping spring, or as a separate component. According to an advantageous design of the present invention, the release element is configured as a release lever, which is pivotally supported at the spring-force clamping connection or in the insulating material housing of the terminal according to the type of a seesaw or rocker arm. The release lever can have a support section by means of which the release lever is supported and can pivot around the support section. The release lever can have a first lever arm extending from the support section in one direction, at which the release section is provided. The release lever can have a second lever arm extending from the support section in a direction different from the first lever arm, which extends to the holding element or the connection site between the holding element and the clamping leg, and the second lever arm is configured to mechanically release the clamping leg from the holding element, for example in such a way that the holding element is slightly moved away from the connection site with the clamping leg by the second lever arm. Here, the first lever arm can be arranged at an angle to the second lever arm, for example substantially at a right angle.

[0015] According to an advantageous design of the present invention, the clamping spring has a bearing section, which is configured to support the clamping spring at the busbar or other components of the terminal. The clamping spring can be supported and braced, for example, with its bearing section on the surface of the busbar, for example, on the surface facing the actuating element. The clamping spring can be braced, for example, with its bearing section on the surface of the busbar facing away from the contact section.

[0016] According to an advantageous design of the present invention, the retaining element is fastened to the bearing section or is integrally formed with the bearing section. In this way, the bearing section additionally serves as a mating support for retaining the retaining element against the tensile force exerted on the retaining element by the clamping leg in the open position. The retaining element can, for example, be cut out of the bearing section, for example, during the stamping and bending process of the sheet metal from which the clamping spring is manufactured.

[0017] According to an advantageous design of the present invention, the bearing section has a first bearing leg and a second bearing leg arranged at a distance from the first bearing leg, the second bearing leg extending substantially parallel to the first bearing leg. In this way, the clamping spring can be supported and braced particularly reliably and stably on the surface of the busbar.

[0018] According to an advantageous design of the present invention, the clamping spring has at least one spring bow, at which the main bending occurs when the clamping spring is compressed in the open position. Thus, the defined spring elasticity of the clamping spring is achieved by the spring bow. The clamping spring can in particular have two spring bows spaced apart from each other, as will be further explained below.

[0019] According to an advantageous design of the present invention, the torsional movement in the spring bow during compression takes place substantially orthogonally to the thickness direction of the sheet material, at least one spring bow being formed from the sheet material. This allows the clamping spring to be particularly ingeniously formed into a frame-shaped structure with an internal space consisting of a single sheet metal part. Thus, the spring bow does not perform the required bending movement in the thickness direction of the sheet material as is known in the case of terminals in the prior art, but rather performs the required bending movement substantially orthogonally thereto. As long as there is more than one spring bow, this can also apply to each of the spring bows.

[0020] According to an advantageous design of the present invention, the first spring bow and the second spring bow spaced apart from the first spring bow extend from the support section to the clamping leg, wherein the interior space of the frame is arranged between the first spring bow and the second spring bow. In this way, the frame-shaped design of the clamping spring described at the beginning is further promoted by the spring bows. The first spring bow can be arranged parallel to the second spring bow. In an advantageous design, the first spring bow can be arranged aligned with the first support leg in the operating direction of the operating element, and the second spring bow can be arranged aligned with the second support leg.

[0021] The support section can have a first sub-section integrally formed with the first spring bow and a second sub-section integrally formed with the second spring bow, wherein the first sub-section and the second sub-section are formed separately, for example, separated by a separation seam provided between the first sub-section and the second sub-section.

[0022] According to an advantageous design of the present invention, the clamping leg has a first leg section connected to the first spring bow and a second leg section connected to the second spring bow, and the clamping leg has a connecting section through which the first leg section and the second leg section are connected. In this way, the frame-shaped design of the clamping spring continues into the clamping leg. For example, the first leg section and the second leg section can be arranged parallel to each other, and the connecting section can be arranged substantially orthogonally to the first leg section and the second leg section. Second form-fitting elements can be respectively arranged in the first leg section and the second leg section.

[0023] According to an advantageous design of the present invention, on the side of the connecting section facing away from the first spring bow and the second spring bow, a clamping tongue of the clamping leg projects from the connecting section, and a clamping edge is formed at the free end of the clamping tongue. Here, the clamping tongue can extend at least in the clamping position up to the contact section of the busbar without inserting an electrical conductor.

[0024] According to an advantageous design of the present invention, a holding element is arranged between the busbar and the operating element. In this way, the holding element can be arranged in a particularly space-saving manner, for example, arranged in the interior space of the frame. Here, the holding element can extend through the interior space. In this way, a spring-force clamping connection can be realized, which has a frame-shaped clamping spring with an internal holding function of the clamping leg.

[0025] According to an advantageous design of the present invention, the busbar has a slit-shaped opening through which the clamping spring or at least its clamping legs pass. This helps to reliably clamp the electrical conductor at the busbar. For example, the contact section can be configured as a contact tongue cut out from the material of the busbar and bent, for example, a contact tongue bent away from the surface of the busbar, and the support section is supported on the busbar at the contact tongue. Then the electrical conductor to be clamped can also be guided through the slit-shaped opening so that the electrical conductor to be clamped is reliably held in the opening. The slit-shaped opening can be completely or mainly surrounded by the material of the busbar on the circumferential side.

[0026] Furthermore, the object mentioned at the beginning is achieved by a terminal with an insulating material housing, which has at least one wire introduction opening for accommodating an electrical conductor in the wire introduction direction L, and at least one spring force clamping connection of the type previously described is provided in the insulating material housing. Thus, the advantages previously described can also be achieved. The electrical conductor can be introduced through the wire introduction opening in the wire introduction direction until the clamping position between the clamping edge of the clamping leg and the contact section of the busbar and clamped there.

[0027] According to an advantageous design of the present invention, a wire guiding channel for guiding the electrical conductor to be clamped at the contact section can be formed in the insulating material housing, and the release section of the release element is arranged in the wire guiding channel or at least extends into the wire guiding channel.

[0028] According to an advantageous design of the present invention, the release section of the release element can be arranged behind the contact section or at least behind the clamping position in the wire introduction direction L.

[0029] In the sense of the present invention, the indefinite article "a" should not be understood as a numeral. That is, for example, if a "component" is mentioned, this should be interpreted in the sense of "at least one component". If an angle is specified in degrees, the angle specification relates to the circular dimension of 360 degrees (360°). Description of the Drawings

[0030] The present invention will be described in detail below with reference to the embodiments using the drawings. The drawings show.

[0031] Figures 1 to 4 The clamping spring is shown in different views,

[0032] Figure 5 The spring force clamping connection is shown in a perspective view,

[0033] Figure 6 Show the spring force clamping connection according to Figure 5 with an electrical conductor,

[0034] Figure 7 The terminal is shown in a side view,

[0035] Figure 8 The terminal according to Figure 7 is shown in a side sectional view in the clamping position,

[0036] Figure 9 The terminal according to Figure 8 is shown in the open position,

[0037] Figure 10 The terminal according to Figure 9 is shown with an electrical conductor. DETAILED DESCRIPTION

[0038] Figure 1 The clamping spring 1 is shown in a perspective view in the clamping position, Figure 2 The clamping spring according to Figure 1 is shown in a side view, and Figure 3 The clamping spring according to Figure 1 is shown in a top view. Figure 4 The clamping spring according to Figure 1 is shown in the open position.

[0039] The clamping spring 1 has clamping legs 2, a first spring bow 31, a second spring bow 32, a support section 4 and a retaining element 5. The support section 4 is divided into a first sub-section 43 and a second sub-section 44, which are formed separately from each other and have a separating gap 45 therebetween. The retaining element 5 can be cut out from the first or second sub-section 43, 44 and bent in a desired direction. The first sub-section 43 transitions integrally into the first spring bow 31. The second sub-section 44 transitions integrally into the second spring bow 32. Furthermore, a first support leg 41 and a second support leg 42 are formed at the support section 4. The first and second support legs 41, 42 are used to support the clamping spring 2 on a bus bar, as will be explained below. For example, the first support leg 41 can be integrally formed with the first sub-section 43 at the end facing away from the first spring bow 31, and the second support leg 42 can be integrally formed with the second sub-section 44 at the end facing away from the second spring bow 32.

[0040] The clamping leg 2 has a first leg section 21 and a second leg section 22 which is arranged at a distance from the first leg section. The first leg section 21 can be integrally formed with the first spring bow 31, and the second leg section 22 can be integrally formed with the second spring bow 32. In addition, the clamping leg 2 has a connecting section 20 through which the first leg section 21 is connected to the second leg section 22. The clamping leg 2 has a first locking element 23, for example in the form of an edge of a cutout, which can be formed in the clamping leg 2 and in particular in the connecting section 20. The first locking element 23 interacts with a second locking element 50 formed at the holding element 5, for example a locking projection or a locking hook, in order to hold the clamping leg 2 in the open position.

[0041] In addition, the clamping leg 2 has a clamping tongue 25 which extends away from the connecting section 20 and has a clamping edge 26 at its free end for clamping an electrical conductor. It can also be seen that the clamping spring 1 has at least one second form-fitting element 27, for example in the form of an oblong hole which is respectively provided at each of the leg sections 21, 22 and which is for receiving a form-fitting element of an actuating element.

[0042] A frame is formed by the clamping leg 2 having the connecting section 20 and the side legs 21, 22 and by the spring bows 31, 32 and the supporting sections 4 of the so-called dorsal subsections 43, 44, and an internal space 3 is formed in the frame. An actuating element for actuating the clamping leg 2 into the open position can be at least partially arranged in the internal space 3.

[0043] Figures 1 to 3 The clamping spring 1 is shown in the relaxed position. In Figure 4 this case, the clamping leg 2 is deflected towards the holding element 5 such that the holding element 5 latches with its second locking element 50 at the first locking element 23 of the clamping leg, whereby the clamping leg 2 is held in the tensioned position of the clamping spring, i.e. the open position, by the holding element 5. The holding element 5 is hereby loaded with a tensile force by the pre-tensioned clamping leg 2.

[0044] In Figure 5The spring-force clamping connection shown in the figure has the clamping spring 1 described previously, as well as the actuating element 6 and the busbar 7 as additional components. The busbar 7 can be configured as a bent busbar, where there is at least one region bent relative to its surface section 70. A slit-shaped opening 72 can be formed in the surface section 70. In addition, the contact section 71 is integrally formed from the material of the surface section 70. The contact section 71 is bent relative to the surface section 70. It can be seen that the clamping spring 1 extends through the slit-shaped opening 72 with its clamping legs 2 or at least with the clamping tongues 25 and can extend up to the contact section 71 at least in the shown clamping position. It can also be seen that the clamping spring 1 is supported on the upper side of the surface section 70 with its supporting legs 41, 42, in particular on the upper side facing away from the contact section 71.

[0045] It can also be seen that the actuating element 6, for example in the form of an actuating press piece, at least partially extends into the interior space 3 of the frame. The actuating element 6 has a manual actuating surface 60, at which the actuating element 6 can be actuated by applying a manually generated actuating force and thereby can be moved towards the busbar 7.

[0046] It can also be seen that the actuating element 6 has first form-fitting elements 62, for example in the form of protruding pins, on both sides, which engage in and are form-fittingly received in second form-fitting elements 27 of the respective side legs 21, 22.

[0047] If the actuating element 6 is actuated towards the busbar 7 by pressure, the actuating element moves towards the busbar 7. Here, the actuating force is transmitted via the form-fitting elements 27, 62 to the clamping legs 2, which are deflected correspondingly and move away from the contact section 71. During the further actuation of the actuating element 6, the clamping legs 2 are deflected until they reach the open position, as Figure 6 shown. If the open position of the clamping legs 2 is reached, the second locking element 50 locks with the first locking element 23. Now, the electrical conductor 9 can be led to the clamping site without force consumption.

[0048] In addition, there is a release element 8, which can be configured, for example, as a bent rocker arm. The release element 8 has a support section 81, and the release element 8 can be pivotally supported on the support element with the support section. A first lever arm 80 extends from the support section 81 in one direction, and a second lever arm 82 extends in the opposite direction or at an angle relative to the first lever arm 80. The first lever arm 80 forms the release section of the release element 8, and the second lever arm 82 forms the transmission section, and the actuating movement applied to the first lever arm 80 is transmitted through the transmission section to the holding element 5 in order to deflect the holding element.

[0049] Figure 7 The terminal 10 is shown, which has an insulating material housing 11, and the insulating material housing has at least one wire introduction opening 12 for introducing the electrical wire 9 into the insulating material housing 11. Here, the electrical wire 9 should be introduced in the wire introduction direction L. In the insulating material housing 11, a spring force clamping connection is provided according to Figure 5 , Figure 6 . It can also be seen that the release element 8 is pivotally supported in the support receiving portion 13 by its support section 81, and the support receiving portion can be formed by the material of the insulating material housing 11, for example.

[0050] Figure 8 The terminal 10 according to Figure 7 is shown in a sectional view, in which the spring force clamping connection is in the clamping position. Then, the wire introduction opening 12 or the wire introduction channel connected thereto is blocked by the clamping tongue 25 in the region of the bus bar 7, so that the electrical wire cannot be easily introduced into the clamping portion.

[0051] Figure 9 In the same sectional view as Figure 8 , the terminal is shown, in which the clamping leg 2 is correspondingly deflected to the open position by operating the element 6, and is held in the open position by the latching of the latching elements 50, 23 through the holding element 5. The open position is stably held until a force acting in the wire introduction direction L is applied to the release section 80 of the release element 8, and the force is sufficient to release the holding element 5 from the clamping leg 2 by the resulting tilting of the release element 8, as can be seen in Figure 10 . Here, the required force is directly applied to the release section 80 by the inserted electrical wire 9, so that the release element 8 pivots and deflects the holding element 5 via its second lever arm 82, so as to release the latching between the first latching element 23 and the second latching element 50. Then, the pre-tensioned clamping leg 2 can be released from the holding element 5, and then presses the electrical wire 9 against the contact section 71 with the clamping edge 26.

[0052] List of reference numerals

[0053] 1 Clamping spring

[0054] 2 Clamping leg

[0055] 3 Interior space

[0056] 4 Support section

[0057] 5 Holding element

[0058] 6 Operating element

[0059] 7 Busbar

[0060] 8 Release element

[0061] 9 Electric conductor

[0062] 10 Terminal

[0063] 11 Insulating material housing

[0064] 12 Conductor entry opening

[0065] 13 Support receptacle

[0066] 20 Connection section

[0067] 21 First leg section

[0068] 22 Second leg section

[0069] 23 First locking element

[0070] 25 Clamping tongue

[0071] 26 Clamping edge

[0072] 27 Second form - fitting element

[0073] 31 First spring bow

[0074] 32 Second spring bow

[0075] 41 First support leg

[0076] 42 Second support leg

[0077] 43 First sub - section of the support section

[0078] 44 Second sub - section of the support section

[0079] 45 Separation seam

[0080] 50 Second locking element

[0081] 60 Manipulation surface

[0082] 62 First form - fitting element

[0083] 70 Surface section

[0084] 71 Contact section

[0085] 72 Slit - shaped opening

[0086] 80 First lever arm

[0087] 81 Support section

[0088] 82 Second lever arm

[0089] D Thickness direction

[0090] L Lead-in direction of the wire

Claims

1. A spring force clamping connector for connecting an electrical conductor (9) by means of a spring force, wherein the spring force clamping connector has at least one busbar (7) and a clamping spring (1), the clamping spring having a clamping leg (2) with a clamping edge (26) for clamping the electrical conductor (9) to a contact section (71) of the busbar (7), and the clamping spring having a retaining element (5) configured to hold the clamping leg (7) in an open position, characterized in that The clamping spring (1) is formed from a spring plate into a frame, and an internal space (3) is formed in the frame, in which an actuating element (6), in particular an actuating pressing element, is at least partially arranged or can be at least partially arranged for actuating the clamping leg (2) into the open position.

2. The spring force clamping connector according to claim 1, wherein The holding element (5) is integrally formed from the material of the clamping spring (1).

3. The spring force clamping connector according to any one of the above claims, characterized in that, The actuating element (6) is positively coupled to the clamping spring (1).

4. The spring force clamping connector according to any one of the above claims, characterized in that, The actuating element (6) sinks at least into the internal space (3) in the open position.

5. The spring force clamping connector according to any one of the above claims, characterized in that The actuating element (6) has at least one first form-fitting element (62), and the clamping spring (1) has at least one second form-fitting element (27), which is configured as a mating part for the first form-fitting element (62), wherein the actuating element (6) is form-fittingly coupled to the second form-fitting element (27) of the clamping spring (1) via its first form-fitting element (62).

6. The spring force clamping connector according to any one of the above claims, characterized in that The spring-force clamping connection has a release element (8) with a release section (80), by means of which the clamping leg (2) held at the holding element (5) in the open position can be released from the holding element (5) when an actuating force is exerted on the release section (80) by the electric conductor to be clamped.

7. The spring force clamping connector according to any one of the above claims, characterized in that The clamping spring (1) has a support section (4), which is configured to support the clamping spring (1) on the busbar (7) or other components of the terminal (10).

8. The spring force clamping connection member according to claim 7, wherein The holding element (5) is fastened to the support section (4) or is integrally formed with the support section.

9. The spring force clamping connector according to any one of claims 7 to 8, characterized in that, The support section (4) has a first support leg (41) and a second support leg (42) arranged at a distance from the first support leg (41), the second support leg extending substantially parallel to the first support leg (41).

10. The spring force clamping connector according to any one of the above claims, characterized in that, The clamping spring (1) has at least one spring bow (31, 32), at which the main bending occurs when the clamping spring (1) is compressed in the open position.

11. The spring force clamping connection member according to claim 10, characterized in that, The torsional movement in the spring bow (31, 32) during compression takes place substantially orthogonally to the thickness direction (D) of the sheet material, and the at least one spring bow (31, 32) is formed from the sheet material.

12. The spring force clamping connector according to any one of claims 10 to 11, characterized in that, A first spring bow (31) and a second spring bow (32) arranged at a distance from the first spring bow (31) extend from the support section (4) to the clamping leg (2), wherein the internal space (3) of the frame is arranged between the first spring bow (31) and the second spring bow (32).

13. The spring force clamping connector according to claim 12, characterized in that, The clamping leg (2) has a first leg section (21) connected to the first spring bow (31) and a second leg section (22) connected to the second spring bow (32), and the clamping leg (2) has a connecting section (20) by means of which the first leg section (21) is connected to the second leg section (22).

14. The spring force clamping connector according to claim 13, wherein On a side of the connecting section (20) facing away from the first spring bow (31) and the second spring bow (32), a clamping tongue (25) of the clamping leg (2) projects, and a clamping edge (26) is formed at the free end of the clamping tongue.

15. The spring force clamping connection member according to any one of the above claims, characterized in that, The holding element (5) is arranged between the bus bar (7) and the actuating element (6).

16. The spring force clamping connector according to any one of the above claims, characterized in that, The holding element (5) extends through the internal space (3).

17. The spring force clamping connector according to any one of the above claims, characterized in that, The bus bar (7) has a slit-shaped opening (72) through which the clamping spring (1) or at least its clamping leg (2) passes.

18. A terminal (10) having an insulating material housing (11), the insulating material housing having at least one wire introduction opening (12) for receiving an electrical wire (9) in a wire introduction direction (L), characterized in that, At least one spring force clamping connection according to any one of the above claims is provided in the insulating material housing (11).

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