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, said spring-force clamping connection having at least one busbar and a clamping spring, said clamping spring having a clamping leg with a clamping edge, the clamping leg has a clamping edge for clamping the electrical conductor at the clamping point to the contact section of the busbar, and the clamping spring has a holding element which is configured to hold 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] This invention relates to a spring-force clamping connector for connecting electrical wires 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 wire at a clamping portion at 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, this invention relates to a terminal block having such a spring-force clamping connector. Background Technology

[0002] Such a terminal block is known from DE 10 2020 119 372A1. This relates to the automatic connection of the terminal block to be clamped when the conductor to be clamped is inserted into it. Upon insertion of the conductor, the clamping legs, which are held in the open position by the clamping spring, automatically release, thereby clamping the conductor. Summary of the Invention

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

[0004] The objective is achieved by configuring the retaining element as a separate component from the clamping spring, wherein the spring-force clamping connector has a release element, by manipulating the release element, the retaining element can be movably, pivotally, or otherwise deflected, causing the clamping leg held at the retaining element to release from the retaining element. This structure with a retaining element separate from the clamping spring allows for the integration of automatic triggering technology into spring-force clamping connectors and terminals of different structural types. In particular, reliable terminals of known structural types can be extended to automatic triggering functionality, i.e., automatic wiring of the wire to be clamped, with minimal cost in this manner.

[0005] By movably configuring the retaining element—that is, movably, pivotally, or otherwise deflectably—the retaining element can be slightly deflected by an inserted wire to achieve the desired release effect between the clamping leg and the retaining element. The retaining element can be movably supported, for example, movably supported along a straight or curved direction. The retaining element can be pivotally supported. In this case, the retaining element can pivot about a fixed or variable pivot axis. In the case of a variable pivot axis, the retaining element can, for example, be floatingly and pivotally supported. The retaining element can also perform combined movement and pivoting movements. The retaining element can also be otherwise movably supported such that the retaining element can be deflected sufficiently far to release the clamping leg's latch at the retaining element.

[0006] The spring-loaded clamping connector can have an operating mechanism for manipulating the clamping legs. This operating mechanism allows the clamping legs to be moved to the open position against the spring force of the clamping spring during manual operation. In the open position, the clamping legs can then be held by a retaining element, eliminating the need for additional manual operation of the operating mechanism and allowing for the introduction of electrical wires without requiring special force. For example, the clamping legs can be locked in place at the retaining element in the open position.

[0007] The clamping legs can form a clamping portion together with the contact section of the busbar to clamp the conductor between the clamping legs and the contact section. In the open position, at least the clamping edges of the clamping legs pivot away from the contact section of the busbar. The clamping legs can, for example, pivot between an open position and a clamped position, in which the conductor can move freely between the clamping legs and the contact section, and in which the clamping position the clamping legs clamp the conductor at the contact section.

[0008] The retaining element can act directly on the clamping leg, for example, to hold the clamping leg in the open position. Therefore, 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, wherein the first and second locking elements can lock into each other in the open position. The first locking element can be configured as a locking protrusion or a locking hook. The second locking element can be configured as a locking edge or a locking opening.

[0009] The retaining element may exist as a separate component, such as being fastened to the insulating housing of the terminal block, busbar, or other component.

[0010] According to an advantageous design of the invention, the retaining element is pivotally supported at a contact section, for example, a busbar, via at least one pivot support element. In this manner, the axis of rotation of the retaining element can be positioned as far away as possible from the support portion of the clamping leg at the retaining element, which helps to minimize the release stroke required at the release element.

[0011] According to an advantageous design of the invention, the releasing element is a component of the spring-force clamping connector having a retaining element. This keeps the structural and assembly costs for the spring-force clamping connector low. Therefore, in particular, it is not necessary to assemble two different components or assemblies for assembling the releasing element and the retaining element, but only one component or assembly. For example, the releasing element can be molded in one piece with the retaining element. The component or assembly can be made of, for example, plastic or metal, or a combination of these materials.

[0012] According to an advantageous design of the invention, the retaining element is positioned behind the clamping portion or substantially behind the busbar in the wire introduction direction of the wire entering the spring-forced clamping connector. In this manner, the retaining element does not obstruct the insertion of the wire. For example, in the open position, that is, when the clamping legs are locked at the retaining element, the retaining element does not extend, or only slightly extends, into the wire receiving space relative to the clamping legs when viewed in the wire introduction direction.

[0013] According to an advantageous design of the invention, the clamping spring has a support section connected to the clamping leg via a spring bow, wherein the support section is configured to support the clamping spring at the busbar, particularly at the frame member. The support section here allows for reliable support of the clamping spring and sufficient support relative to the spring force applied by the clamping leg.

[0014] According to an advantageous design of the invention, the busbar has a frame member in which a clamping spring is tensioned, wherein the frame member has a through opening through which a wire to be connected can be inserted. For example, the clamping spring can be attached by its support section to an edge section of the frame member surrounding the through opening. The clamping spring can be tensioned in the frame member such that the support section is secured to the frame member and the clamping legs are oriented toward a contact section of the busbar, that is, in the clamped position, it rests against the contact section without a wire inserted, or with a wire inserted, the clamping legs press the wire against the contact section.

[0015] The frame component can be formed in one piece from the busbar material, for example, as an area bent and punched from the contact section. The frame component can have a frame surrounding the circumferential side, which completely surrounds the through opening. For example, the through opening can have a substantially rectangular cross-section. Thus, the frame component can have a first side leg extending from the contact section on one side and a second side leg extending on the opposite side, wherein the first and second side legs can extend parallel to each other. The frame component can also have lateral legs connecting the free ends of the first and second side legs to each other. A clamping spring can then be attached to the lateral legs by means of a support section.

[0016] According to an advantageous design of the invention, the retaining element and / or releasing element extend into a through opening in the frame component. This allows for a good integration of the compact construction of the spring-force clamping connector and the automatic triggering function.

[0017] According to an advantageous design of the invention, the spring-force clamping connector has a pivotable lever that can be manually operated by the user in order to actuate the clamping spring to the open position. This allows for simple and comfortable manual operation of the spring-force clamping connector. Furthermore, this lever can be well integrated into the construction of the terminal block.

[0018] According to an advantageous design of the invention, the lever is U-shaped when viewed in the direction of wire introduction, wherein the electrical wire can be inserted through the internal space of the U-shape. This allows for a particularly compact implementation of the spring-force clamping connector, enabling the transmission of large forces by means of the lever, with only minimal additional space requirements. This is particularly achieved by the fact that the internal space of the U-shape can be used to house the electrical wire to be clamped.

[0019] For example, the joystick can have a manual operating area, such as an operating area in the form of a handle, from which the joystick extends via two sidewalls, for example, parallel to the manual operating area, around the device consisting of a clamping spring and a busbar. If the spring-force clamping connector is housed in an insulating material housing of the terminal block, the sidewalls can be located inside the insulating material housing. Spring-carrying elements can be provided on the inner side of the sidewalls, i.e., on the side pointing towards the clamping spring, and these spring-carrying elements can, for example, be integrally formed on the respective sidewalls. By means of such spring-carrying elements, the clamping spring can be actuated directly at the clamping leg or at the corresponding operating section provided with the spring-carrying element, extending laterally beyond the clamping leg, and correspondingly pivoted to the open position.

[0020] According to an advantageous design of the invention, the lever has at least one spring actuation element disposed on the side of the clamping spring and configured to deflect the clamping leg. With at least one such spring actuation element, the clamping leg can be reliably deflected to the open position when the lever is correspondingly pivoted. The lever or spring actuation element may, for example, be supported at the contact section of the busbar.

[0021] According to an advantageous design of the invention, the spring actuator has a circumferentially circular or partially circular pin with a V-shaped notch, into which the clamping leg extends to the actuating section. This achieves reliable force transmission from the actuating lever to the clamping spring.

[0022] According to an advantageous design of the invention, the releasing element is elastically supported by at least one spring element, wherein the releasing element can be actuated against the spring force of the spring element by the wire to be inserted. This ensures that the releasing element will not accidentally release the latch between the clamping leg and the retaining element, for example, due to vibration of the terminal, because the additional spring force of the spring element must first be overcome. The spring element required for elastic support can be disposed at the releasing element or integrally formed therewith.

[0023] According to an advantageous design of the invention, the spring-force clamping connector has a release element with a release section. When the conductor to be clamped applies an actuating force to the release section, the clamping leg, held in the holding element in the open position, can be released from the holding element by the release element. This allows the clamping leg to be automatically released from the holding element by inserting the conductor. Pressure can be applied to the release section by a separate tool, a terminal component such as an actuating element, or directly via the introduced conductor itself, thereby causing the clamping leg to release from the holding element. By means of the release element, the clamping leg held in the holding element in the open position can be released from the holding element by applying pressure to the release section in the conductor introduction direction (L) of the conductor to be connected. According to the design of the spring-force clamping connector, the release element can be configured as part of the clamping spring, for example, configured as a release element integrally formed with the clamping spring, or configured as a separate component.

[0024] Furthermore, the aforementioned objective is achieved through a terminal block with an insulating housing having at least one wire-inlet opening for receiving electrical wires in the wire-inlet direction, wherein at least one spring-forced clamping connector of the type previously described is provided within the insulating housing. This also achieves the advantages described above. The electrical wire can be introduced in the wire-inlet direction through the wire-inlet opening until it is clamped at the clamping portion between the clamping edge of the clamping leg and the contact section of the busbar.

[0025] According to an advantageous design of the invention, a wire guide channel for guiding the electrical wire to be clamped at the contact section can be formed in the insulating material housing, wherein the release section of the release element is disposed in the wire guide channel or at least extends into the wire guide channel.

[0026] According to an advantageous design of the invention, the release segment of the release element may be provided behind the contact segment or at least behind the clamping segment in the wire introduction direction (L).

[0027] In the context of this invention, the indefinite term "one" is not to be understood as a numeral. Therefore, if, for example, a component is referred to, this should be interpreted in the sense of "at least one component." Angles are described in degrees, referring to the dimension of a circle of 360 degrees (360°).

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0029] The attached diagram shows:

[0030] Figure 1 The wiring terminals are shown in a three-dimensional view.

[0031] Figure 2 Shown in a side sectional view according to Figure 1 The wiring terminals,

[0032] Figure 3 A perspective view shows the spring force clamping the connector in the clamped position.

[0033] Figure 4 Showing according to Figure 3 The spring force clamps the connector in the open position.

[0034] Figure 5 The retain-release element of the assembly is shown in a perspective view.

[0035] Figure 6 The joystick is shown in a 3D view.

[0036] Figure 7 Shown in side sectional view according to Figure 6 The joystick,

[0037] Figure 8 Another embodiment of the terminal block is shown in a side sectional view.

[0038] Figure 9 The side sectional view shows the situation in the open position. Figure 8 The spring force of the terminal clamps the connector.

[0039] Figure 10 Shown in a three-dimensional view according to Figure 8 The combination of terminal blocks for holding-releasing elements. Detailed Implementation

[0040] Figure 1A terminal block 1 with an insulating housing 2 is shown. In the illustrated embodiment, the terminal block 1 is configured as a bipolar terminal block. Correspondingly, the terminal block 1 has two wire introduction openings 20 in the insulating housing 2, through which electrical wires to be clamped can be introduced respectively. Two spring-loaded clamping connectors are provided in the insulating housing 2, each equipped with a wire introduction opening 20. To operate the clamping spring of each spring-loaded clamping connector, the terminal block 1 has a pivotable lever 6.

[0041] Figure 2 Showing according to Figure 1 A cross-sectional view of terminal 1. It can be seen that the spring-force clamping connector disposed within the insulating material housing 2 has a clamping spring 4 and a busbar 3. The busbar 3 has a contact section 31 and a frame member 32 bent at an angle from the contact section 31; however, the frame member first... Figure 3 Clearly visible in the image. The contact section 31 is used for electrical contact with the connected wire. The clamping spring 4 has a support section 41, which is fastened to the frame member 32. The support section 41 can be hooked onto a transverse leg 33 of the frame member 32 located away from the contact section 31. The clamping spring 4 has a spring bow 42 connected to the support section 41 and a clamping leg 43 connected to the spring bow 42, the clamping leg being used to securely clamp the wire to the contact section 31. The clamping leg 43 terminates at its free end with a clamping edge 46.

[0042] In order to manipulate the clamping spring 4, that is, in order to move the clamping leg 43 from... Figure 2 The clamping position shown is deflected to the open position, and a lever 6 is provided. The lever 6 has a manual operating area 60 that extends from the insulating material housing 2. At the manual operating area 60, the lever 6 can be gripped and pivoted by the user. The lever 6 extends into the insulating material housing 2 via a side wall 65. A spring-operated section 61 with a spring-driven member 62 is provided at each side wall 65. When the lever 6 pivots, the clamping leg 43 pivots away from the contact section 31 via the spring-driven member 62 and moves to the open position. If the operating element 5 is relative to the... Figure 1 If the position shown is pivoted clockwise, the clamping leg 43 deflects upward via the spring actuator 62, causing the clamping edge 46 to lift off the contact section 31 and move away from it. In this manner, the clamping portion can be opened, allowing the securely clamped wire to be removed or the wire to be clamped to be easily introduced.

[0043] Furthermore, a retaining element 5 is provided in the insulating housing 2 to hold the clamping leg 43 in the open position. The retaining element 5 has a locking element 50, at which the clamping leg 43 can be locked by means of the locking element formed in this case by the clamping edge 46. Alternatively, a separate locking element can be formed at the clamping leg 43. The retaining element 5 has one or more supporting sidewalls 53, through which the retaining element 5 is supported relative to the force acting on the locking element 50, for example, supported on the busbar 3 or a portion of the housing 2.

[0044] Furthermore, a release element 8 is provided in the insulating material housing 2, which is used to deflect the retaining element 5 during corresponding operation, causing the clamping leg 43 held at the retaining element 5 to release from the retaining element 5. For this purpose, the release element 8 has a release section 80. If an electrical wire is introduced into the insulating material housing 2 through the wire introduction opening 20 in the wire introduction direction L, then the end of the electrical wire pressing against the release section 80 causes a corresponding deflection of the retaining element 5 toward the housing wall 21 behind the insulating material housing 2, thereby releasing the lock between the locking element 50 and the clamping leg 43. Therefore, due to the spring preload of the clamping spring 4, the clamping leg 43 moves into the clamping position.

[0045] Figure 3 A spring-force clamping connector disposed within an insulating material housing 2 is shown, the spring-force clamping connector having two clamping springs 4 arranged side-by-side of the aforementioned type. The spring-force clamping connector has a common, transversely continuous busbar 3, the busbar having contact sections 31 and frame members 32 respectively disposed for the clamping springs 4. It can be seen that, in this embodiment, the retaining element 5 is pivotally fastened to the busbar 3 in such a way that pivot support elements 51, protruding to the left and right respectively from the retaining element 5, engage the busbar 3 from the rear, for example, in the region of the curved transition from the contact section 31 to the frame member 32. The retaining element 5 is pivotally supported at the busbar 3 in this manner.

[0046] Figure 3 A spring-force clamping connector is shown, which has a clamping spring 4 in the clamped position. Figure 4 The basis shown in the open position Figure 3 The setup—for better illustration, a cross-sectional view of the front clamping spring 4 and busbar 3 is shown here, in which the clamping leg 43 is locked at the retaining element 5, or more precisely at the locking element 50, in the open position.

[0047] Figure 5An advantageous design of the retaining element 5 is shown, which has a release element 8 in the form of a one-piece molded structural unit, for example, in the form of a plate, which can be provided as a stamped and bent member. The retaining element 5 has two support walls 53 that extend substantially parallel to each other, spaced apart from each other. The side walls 53 are connected to each other in the region of the locking element 50 via a transverse connecting section 52. The retaining element 5 is supported by free ends of the support walls 53 spaced apart from the transverse connecting section 52 and / or by a pivot support element 51, for example, supported at the busbar 3. The release element 8 is formed directly at the transverse connecting section 52 and extends via a bend to a release section 80, which is used to actually actuate the release element 8 via an electrical conductor.

[0048] Figure 6 and Figure 7 The joystick 6 is shown in further detail. It can be seen that the joystick 6 has sidewalls 65 extending substantially right-angled from the manual operation area 60 on opposite sides of the manual operation area 60. The sidewalls 65 extend longitudinally beyond the manual operation area 60. In this area, the sidewalls 65 are not connected to each other, i.e., there is free space 66 there.

[0049] A locking element 67 may be provided in the manual operation area 60 to lock the lever 6 in a closed lever position. The lever 6 can be locked, for example, to a corresponding locking section of the insulating material housing 2 by means of the locking element 67. Furthermore, the lever 6 may have a manual operation aid 69 at its end pointing towards the wire inlet side, which facilitates easier gripping of the lever in the closed position or operation of the lever with the aid of a tool.

[0050] Support sections 68 are formed on the inner sides of the side walls 65, extending into the interior of the insulating material housing 2. At each support section 68, a spring-operated section 61 with a spring-carrying member 62 is provided on its inner side. The spring-carrying member 62 has a partially circular V-shaped cutout 63 around its circumference. Furthermore, it can be seen that the spring-operated sections 61 with the spring-carrying members 62 are not directly adjacent to the respective side walls 65 in the lateral direction, but rather form a gap-like intermediate space 64 between the side walls. For example, the inner wall of the insulating material housing 2 can be accommodated in the gap-like intermediate space 64, which helps improve the guidance of the lever 6 during pivoting movement. The lever 6 can pivot about the rotation axis D.

[0051] exist Figure 8Another embodiment of the terminal block 1 is described, wherein the terminal block has a retaining element 5 and a releasing element 8 with different designs. Other features of the terminal block 1 correspond to the aforementioned embodiment. Figure 8 The spring force clamping connector reproduced in the cross-sectional plane has been moved to the open position by operating the provided lever 6, wherein the clamping leg 43 is locked at the locking element 50 of the retaining element 5.

[0052] exist Figure 8 In this embodiment, the retaining element 5 and the releasing element 8 together form a can-shaped structural element, which may be closed or at least substantially closed on five of its six sides. The structural element may be manufactured, for example, as a plastic or metal component. The end wall of the rearward-facing housing wall 21 of the structural element forms a releasing section 80.

[0053] Figure 9 The spring-force clamping connector, together with the previously described combination of retaining-releasing elements 5 and 8, is shown. The retaining-releasing elements 5 and 8 can, for example, be slidably supported on the insulating housing 2 by means of the lower wall 55. In this case, the retaining-releasing elements 5 and 8 do not perform pivoting movement, but rather perform substantially linear traverse movement. At the retaining-releasing elements 5 and 8, a spring element 81 can be provided in the region of the releasing section 80, the spring element being, for example, molded in one piece with the releasing section 80.

[0054] Figure 10 A retaining-releasing element 5, 8, having a retaining element 5 and a releasing element 8, is shown separately. For example, the structural element may have two substantially parallel sidewalls 54. The sidewalls 54 may be connected to each other in the upper region via an upper wall 56 and in the lower region via a lower wall 55. The retaining-releasing element 5, 8 may be substantially funnel-shaped or wedge-shaped. The electrical wire to be clamped is then introduced into the region surrounded by the walls 54, 55, 56 and then abuts against the releasing section 80, which forms a boundary wall for the rear of the component. The entire retaining-releasing element 5, 8 can then be moved slightly toward the rear housing wall 21 by the electrical wire against the restoring force of the spring element 81 until the clamping leg 43 releases the clamping edge 46 from the locking element 50.

[0055] List of reference numerals in the attached diagram:

[0056] 1 terminal block

[0057] 2. Insulating material housing

[0058] 3 bus

[0059] 4 clamping springs

[0060] 5 retaining elements

[0061] 6 joysticks

[0062] 8 Release components

[0063] 20 wires introduced into the opening

[0064] 21 The shell wall behind

[0065] 31 contact section

[0066] 32 frame components

[0067] 33 Horizontal Legs

[0068] 41 Support Section

[0069] 42 Spring Bow

[0070] 43. Clasp your legs together

[0071] 46 Clamping edge

[0072] 50-card lock element

[0073] 51 Pivot Support Element

[0074] 52 Lateral connecting section

[0075] 53 Support Wall

[0076] 54 sidewalls

[0077] 55 lower wall

[0078] 56 on the wall

[0079] 60 manual control area

[0080] 61 Spring Operating Section

[0081] 62 Spring Carrier

[0082] 63V-shaped incision

[0083] 64 interstitial intermediate spaces

[0084] 65 sidewall

[0085] 66 Free Space

[0086] 67 Locking Components

[0087] 68 Support Section

[0088] 69 Manual control aids

[0089] 80 loosening section

[0090] 81 Spring Components

[0091] D Rotation axis

[0092] L-direction of wire introduction

Claims

1. A spring-force clamping connector for connecting electrical wires by means of spring force, wherein the spring-force clamping connector has at least one busbar (3) and a clamping spring (4), the clamping spring having a clamping leg (43) with a clamping edge (46) for clamping the electrical wire at a clamping portion at a contact section (31) of the busbar (3), and the spring-force clamping connector has a retaining element (5) configured to hold the clamping leg (43) in an open position, characterized in that, The retaining element (5) is configured as a separate component from the clamping spring (4), wherein the spring force clamping connector has a release element (8) that, by manipulating the release element, allows the retaining element (5) to be movably, pivotally, or otherwise deflected, such that the clamping leg (43) held at the retaining element (5) is released from the retaining element (5).

2. The spring-force clamping connector according to claim 1, characterized in that, The retaining element (5) is pivotally supported at the busbar (3) via at least one pivot support element (51).

3. The spring-force clamping connector according to any one of the preceding claims, characterized in that, The releasing element (8) is a component of the spring force clamping connector having the retaining element (5).

4. The spring-force clamping connector according to any one of the preceding claims, characterized in that, The retaining element (5) is positioned behind the clamping portion or behind most of the busbar (3) in the wire introduction direction (L) of the wire introduction into the spring force clamping connector.

5. The spring-force clamping connector according to any one of the preceding claims, characterized in that, The busbar (3) has a frame component (32) in which the clamping spring (4) is tensioned, wherein the frame component (32) has a through opening so that the electrical wire to be connected can be inserted through the through opening.

6. The spring-force clamping connector according to claim 5, characterized in that, The retaining element (5) and / or the releasing element (8) extend into the through opening of the frame component (32).

7. The spring-force clamping connector according to any one of the preceding claims, characterized in that, In order to manipulate the clamping spring (4) to the open position, the spring force clamping connector has a lever (6) that can be manipulated and pivoted.

8. The spring-force clamping connector according to claim 7, characterized in that, Viewed in the direction of wire introduction (L), the lever (6) is U-shaped, allowing the electrical wire to be inserted through the U-shaped interior space.

9. The spring-force clamping connector according to any one of claims 7 to 8, characterized in that, The lever (6) has at least one spring actuator (62) disposed on the side of the clamping spring (4) and configured to deflect the clamping leg (43).

10. The spring-force clamping connector according to claim 9, characterized in that, The spring actuator (62) has a circumferentially or partially circumferentially circular pin with a notch (63), wherein the clamping leg (43) extends into the notch (63) with an actuating section.

11. The spring-force clamping connector according to any one of the preceding claims, characterized in that, The clamping spring (4) has a support section (41) connected to the clamping leg (43) via a spring bow (42), wherein the support section (41) is configured to support the clamping spring (4) at the busbar (3).

12. The spring-force clamping connector according to any one of the preceding claims, characterized in that, When the wire to be clamped applies a manipulating force to the release section (80) of the release element, the clamping leg (43) held in the holding element (5) in the open position can be released from the holding element (5).

13. The spring-force clamping connector according to any one of the preceding claims, characterized in that, The release element (8) is elastically supported by at least one spring element (81), wherein the release element (8) can be manipulated by the spring force of the spring element (81) through the electrical wire to be inserted.

14. The spring-force clamping connector according to claim 10, characterized in that, The incision (63) is V-shaped.

15. The spring-force clamping connector according to claim 11, characterized in that, The support section (41) supports the clamping spring (4) at the frame component (32) of the busbar (3).

16. A terminal block (1) having an insulating material housing (2), the insulating material housing having at least one wire introduction opening (20) for receiving an electrical wire in the wire introduction direction (L), characterized in that, At least one spring-force clamping connector according to any one of the preceding claims is provided in the insulating material housing (2).

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