Spring force clamping connection and terminal

Abstract

The invention relates to a spring force clamping connection for clamping a cable comprising an insulating sheath in an uninsulated manner, wherein at least one electrical conductor is arranged in the insulating sheath, wherein the spring force clamping connection has at least one busbar and a clamping spring, wherein the clamping spring has a clamping leg, which is configured for clamping the electrical conductor at a contact section of the busbar, and a bearing leg for spring force support of the clamping spring relative to the clamping leg. The invention also relates to a terminal having such a spring force clamping connection.

Description

Technical Field

[0001] This invention relates to a spring-force clamping connector for clamping an insulated cable without stripping its insulation, wherein at least one conductor is disposed within the insulated sheath, and the spring-force clamping connector has at least one busbar and a clamping spring, wherein the clamping spring has clamping legs and abutment legs, the clamping legs being configured to clamp the conductor at a contact section of the busbar, and the abutment legs being used to support the clamping spring relative to the spring force of the clamping legs. The invention also relates to a terminal block having such a spring-force clamping connector. Background Technology

[0002] In the case of conventional terminal blocks, the connection of electrical wires is associated with certain costs, for example, because the insulation of the wires must first be stripped in a separate work step and / or because the terminal blocks must first be moved to the open position of the clamping legs using tools or the terminal block's built-in operating element. In large-scale wiring work, such as in switch cabinets, these work steps accumulate into significant time and labor costs. Summary of the Invention

[0003] The purpose of this invention is to provide a spring-force clamping connector and a terminal block comprising the spring-force clamping connector, wherein the terminal block enables simpler and faster connection of electrical wires.

[0004] The objective is achieved in the case of the spring-force clamping connector of the type mentioned at the beginning by having a cutting blade provided at the clamping leg. This cutting blade is configured to automatically cut open the insulating sheath and expose the stripped section of the internal electrical conductor when the clamping leg moves from the open position to the clamped position. With the cutting blade at the clamping leg, the electrical conductor can be directly electrically connected to the contact section of the busbar without prior manual stripping of the insulation. Since manual stripping of the insulation is not required, the spring-force clamping connector is suitable for clamping insulated cables without stripping the insulation.

[0005] Advantageously, the cutting blade is positioned directly at the clamping leg, which is advantageous for performing the process of automatically cutting and exposing electrical wires. The cutting blade can be integrally formed with the clamping leg, for example, by forming the cutting edge at the clamping leg. The cutting blade can also be configured as a separate component, which is fastened to the clamping leg, for example, by form-fitting and / or material-fitting connections.

[0006] In this manner, a spring-force clamping connector with integrated IDC technology (IDC – Insulated Displacement Contact) can be created. Unlike conventional IDC contacts where electrical contact is also made directly via the cutter, the spring-force clamping connector according to the invention achieves advantageous contact between the conductor and the bus, i.e., advantageous contact between the conductor and a component separate from the cutter. In this manner, the spring-force clamping connector is particularly suitable for low-resistance contact of the conductor, through which high current must be transmitted. Here, the bus can be made of a material particularly suitable for conductivity, such as copper or copper alloys, while the cutter and / or clamping spring can be made of a material optimized for its respective function, especially a material different from that of the bus. If the cutter is configured as a component separate from the clamping legs, the cutter can also be made of a material different from that of the clamping spring, especially a material particularly suitable for the cutting process.

[0007] The clamping legs can form a clamping portion together with the contact section of the busbar, the clamping portion being used to clamp the electrical conductor between the clamping legs and the contact section. In the open position, at least the clamping edge of the clamping legs pivots 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 electrical conductor can move freely between the clamping legs and the contact section, and in the clamped position, the clamping legs clamp the electrical conductor at the contact section.

[0008] Electrical wires or cables can be introduced into the spring-forced clamping connector in a wire introduction direction orthogonal to the planar extension of the clamping leg.

[0009] According to an advantageous design of the invention, the spring-force clamping connector has a spacing retainer disposed at the cutter, the spacing retainer being configured to push the insulating sheaths cut by the cutter apart from each other, thereby exposing the internal electrical conductors. The corresponding molding of the spacing retainer ensures, in a defined manner, that a desired portion of the electrical conductor is exposed, i.e., a sufficiently long portion is exposed to guarantee reliable electrical contact at the busbar contact section. The spacing retainer can be formed in one piece from the material of the cutter, for example as a protrusion extending from the cutter in or against the direction of conductor introduction. The spacing retainer can also be configured as a separate component, connected to the cutter, for example, by form-fit and / or material-fit connection.

[0010] According to an advantageous design of the invention, the spacing retainer is formed of a plastic material and / or an insulating material. This allows for particularly gentle separation of the insulating sheath and exposure of the conductors, especially without damaging the individual strands of the conductors.

[0011] According to an advantageous design of the invention, a spacing retainer is configured to space the electrical conductor from the cutting blade during the cutting of the insulation sheath. In this manner, the cutting blade does not come into direct contact with the electrical conductor. This also protects the electrical conductor from damage, which is a significant advantage, especially in the case of sensitive stranded wires.

[0012] According to an advantageous design of the invention, the material thickness of the spacing retainer increases in the direction away from the contact section. This increase in the material thickness of the spacing retainer creates an inclined portion, through which the insulating sheaths can be gently pushed apart. Here, the material thickness of the spacing retainer is understood as a dimension perpendicular to the plane of the cutting blade, or a dimension in the direction of wire introduction.

[0013] According to an advantageous design of the invention, in the clamped position, the exposed, stripped portion of the conductor is in electrical contact with the contact portion of the bus, especially when the conductor is not in contact with the cutting blade. This ensures good and particularly low-resistance current transmission from the conductor to the bus, wherein, in the final connected state at the spring-forced clamping connector, the conductor also maintains a distance from the cutting blade to avoid damage.

[0014] According to an advantageous design of the invention, the cutting tool has two opposing cutting edges with a cutting gap between them. This enables advantageous and reliable symmetrical cutting of the insulation sheath, i.e., at the two opposing sides of the cable.

[0015] According to an advantageous design of the invention, the cutting blade has a base from which two cutting arms extend, spaced apart from each other by an intermediate space. One of the cutting blades is disposed at each of the cutting arms. This achieves elastic suspension of the cutting blade by means that the cutting arms are designed to have corresponding elasticity. In this manner, when the cutting blade passes through the insulating sheath, the cutting blade can open, i.e., the cutting gap can temporarily widen slightly.

[0016] According to an advantageous design of the invention, the material thickness of the spacing retainer increases in the direction away from the cutting gap. This increase in the material thickness of the spacing retainer can form a slope that gently pushes the insulating sheaths apart. The slope can, for example, be positioned between the cutting gap and the substrate, i.e., starting after the cutting gap and ending before the substrate.

[0017] According to an advantageous design of the invention, an intermediate space is formed between the cutting arms, away from the cutting edge, said intermediate space being wider than the cutting gap. Here, the wider intermediate space is particularly formed behind the cutting edge, i.e., between the cutting edge and the base. In this manner, a safe distance is ensured between the components of the cutting blade and the electrical wires when connected to the spring-force clamping connector.

[0018] According to an advantageous design of the invention, the clamping spring is configured as a cage-type tension spring. This has the advantage that spring-force clamping of the connector can be achieved even with large conductor cross-sections, while maintaining a high spring force and correspondingly reliable electrical contact in a compact construction. The cage-type tension spring may, for example, have clamping legs with window-shaped through openings. The window-shaped openings in the clamping legs may, for example, be completely surrounded by the material of the clamping legs on the circumferential side. The cage-type tension spring may have abutment legs for supporting the clamping spring relative to the spring force of the clamping legs, wherein at least a portion of the abutment legs and / or a portion of the busbar may extend through the window-shaped through openings in the clamping legs.

[0019] According to an advantageous design of the invention, the clamping spring is supported at the busbar by its abutment leg, thereby being supported at the busbar by the spring force relative to the clamping leg. This allows for reliable fixation of the clamping spring, wherein a self-supporting spring force can be provided to clamp the connection, wherein the surrounding insulating housing is not loaded by the force of the clamping spring.

[0020] In another embodiment, the present invention relates to a spring-force clamping connector for clamping electrical wires by means of spring force, particularly a spring-force clamping connector of the type previously described, wherein the spring-force clamping connector has at least one busbar and a clamping spring, wherein the clamping spring is configured as a cage-type tension spring and has a clamping leg with a window-like opening and a backing leg, the backing leg being used to support the clamping spring relative to the spring force of the clamping leg, wherein the backing leg and / or the busbar extends through the window-like opening of the clamping leg, wherein the busbar has a body, the body being configured as a substantially flat plate member and / or forming the majority of the busbar, wherein the body is substantially orthogonal to the backing leg and / or substantially parallel to the clamping leg. This configuration of the busbar and the cage-type tension spring allows for a novel and advantageous construction of the terminal block and its housing compared to conventional cage-type tension spring connectors. A high contact force on the clamped electrical wire can be ensured by the cage-type tension spring. When the clamping leg moves from the clamped position to the open position or vice versa, the clamping leg can, for example, slide along the surface of the body.

[0021] According to an advantageous design of the invention, the busbar has a wire pass-through opening through which an electrical wire, clamped at a spring-loaded clamping connector, passes. Thus, the electrical wire is reliably guided and reliably clamped at the desired position on the busbar. For example, the electrical wire can be clamped at the inner edge of the wire pass-through opening, which can then form a contact segment. The wire pass-through opening can be configured as a window-shaped opening, which is completely surrounded circumferentially by the busbar material.

[0022] According to an advantageous design of the invention, the busbar has a contact section bent out of the plane of the body, the contact section extending through a window-like opening in the clamping leg. This allows for more reliable electrical contact and mechanical fixation of the clamped wires. In an advantageous design, the contact section may extend from the inner edge of the wire pass-through opening.

[0023] According to an advantageous design of the invention, at least one support tab is formed at the abutment leg, which is substantially parallel to the bending of the clamping leg. The support tab can be used to secure the clamping spring or the entire spring force clamping connector in the housing of the terminal block.

[0024] According to an advantageous design of the invention, the spring-loaded clamping connector has a retaining element configured to hold the clamping legs in the open position. The retaining element also holds the clamping legs in the open position when no manual operating force is applied to them. In the open position, the clamping legs are held by the retaining element, eliminating the need for additional manual operation of the operating element, allowing for the introduction of electrical leads without requiring special force. For example, the clamping legs can be locked in place at the retaining element in the open position.

[0025] The retaining element can be movably configured, for example, movably, pivotally, or otherwise deflectably configured, such that the retaining element can be slightly deflected by an inserted wire to release the clamping leg from the retaining element. The retaining element can be movably supported, for example, movably supported in a linear or arcuate 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 be, for example, floatingly pivotally supported. The retaining element can also perform a combination of lateral and pivotal 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.

[0026] 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 retaining element and a second locking element at the clamping leg, 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.

[0027] The retaining element can be configured as a separate component from the clamping spring, such as being fastened to the insulating housing of the terminal block, the clamping spring, the busbar, or other components.

[0028] According to an advantageous design of the invention, the spring-force clamping connector has a release element, which, when operated, deflects the retaining element such that the clamping leg held at the retaining element is released from the retaining element. This structure allows for the integration of automatic triggering technology into spring-force clamping connectors and terminals of various structural forms.

[0029] According to an advantageous design of the invention, when the conductor to be clamped applies an operating force to the release section of the release element, the clamping leg held at the retaining element in the open position can be released from the retaining element.

[0030] By operating the releasing element, the retaining element can be deflected, causing the clamping legs held at the retaining element to release from the retaining element; the releasing element may have a releasing section. When the conductor to be clamped applies an operating force to the releasing section, the clamping legs held at the retaining element in the open position can be released from the retaining element by the releasing element. This allows the clamping legs to be automatically released from the retaining element by inserting the conductor. The releasing section can be pressured by a separate tool, a terminal component, such as an operating element, or directly via the introduced conductor itself, thereby achieving the release of the clamping legs from the retaining element. By means of the releasing element, the clamping legs held at the retaining element in the open position can be released from the retaining element by applying pressure to the releasing section in the direction of the conductor introduction of the conductor to be connected. Depending on the construction of the spring-force clamping connector, the releasing element may be configured as part of the clamping spring, for example, configured as a releasing element integrally formed with the clamping spring, or configured as a separate component.

[0031] According to an advantageous design according to the invention, the retaining element and the releasing element are implemented as a structural unit in the form of a combined retaining-releasing element. In this case, the releasing element is part of a component or assembly of a spring-force clamping connector, which has the 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 is assembled. 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.

[0032] According to an advantageous design of the invention, the retaining element is box-shaped and has at least two side sections, which at least on both sides surround an area for accommodating electrical wires. This allows the retaining element to be well integrated into the terminal block with minimal space requirements. Furthermore, the side sections allow for guidance of the electrical wires toward the release element.

[0033] According to an advantageous design according to the invention, the release segment extends laterally from one side segment to the other side segment. Here, the release segment can be integrally constructed, i.e., as a continuous component from one side segment to the other side segment, or as a multi-piece component.

[0034] According to an advantageous design of the invention, the retaining-releasing element is rotatably secured to the spring-forced clamping connector. The retaining-releasing element can be configured, for example, as a rocker arm.

[0035] According to an advantageous design of the invention, the retaining-releasing element is fixed between the busbar and the clamping spring. This allows for reliable fixation of the retaining-releasing element.

[0036] According to an advantageous design of the invention, the retain-release element is supported at the busbar, particularly at the busbar body, relative to the spring force acting on the retain-release element by the clamping legs in the open position. This allows for reliable support of the retain-release element. Furthermore, the insulating housing is protected because it does not need to absorb the supporting force.

[0037] According to an advantageous design of the invention, the retaining-releasing element is positioned behind the clamping portion or behind most of the busbar in the wire introduction direction.

[0038] According to an advantageous design of the invention, the spring-force clamping connector has a pivotable operating lever or a movable operating button that can be manually operated by the user to operate the clamping spring to the open position. This allows for simple and comfortable manual operation of the spring-force clamping connector, especially without the need for additional tools. Furthermore, such an operating lever or operating button can be well integrated into the construction of the terminal block.

[0039] The present invention also relates to a terminal block having an insulating material housing having at least one wire inlet opening for receiving an electrical wire in the wire inlet direction, wherein at least one spring-force clamping connector of the previously described type is provided in the insulating material housing.

[0040] Overall, the present invention has the following additional advantages:

[0041] - Connecting electrical wires is possible without tools.

[0042] - It is permissible to connect electrical wires without first stripping the insulation.

[0043] - It can connect wires with different cross-sections.

[0044] - The cutting blade can be made of a different material than the clamping spring and / or busbar.

[0045] The pressure used to deflect the clamping spring to the open position and the pressure used to cut off the insulating sheath are independent of each other.

[0046] - Buses can be cost-effectively manufactured from SE-CU, for example, thus avoiding the need for particularly expensive copper alloys.

[0047] - Spring-clamped connectors, despite having additional functions, can still be provided with a small installation space, similar to known rail-mounted terminals.

[0048] In the context of this invention, the indefinite article "a" is not understood as a numeral. Therefore, if, for example, one component is referred to, it should be interpreted in the sense of "at least one component." As long as the angle is described in degrees, the angle description refers to a circle of 360 degrees (360º). Attached Figure Description

[0049] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] The attached diagram shows:

[0051] Figure 1 The spring-force clamping connector is shown in a three-dimensional view.

[0052] Figure 2The clamping spring is shown in a perspective view.

[0053] Figure 3 Shown in side view according to Figure 2 The clamping spring,

[0054] Figure 4 The cutting blade is shown in a three-dimensional view.

[0055] Figure 5 Shown in side view according to Figure 4 The cutting blade,

[0056] Figure 6 The retain-release element is shown in a perspective view.

[0057] Figure 7 The busbar is shown in a 3D view.

[0058] Figure 8 The side sectional view shows the terminals without connected wires in the clamped position.

[0059] Figure 9 Shown in side view according to Figure 8 The wiring terminals,

[0060] Figure 10 The wiring terminals in the open position are shown in a side sectional view.

[0061] Figure 11 Shown in side view according to Figure 10 The wiring terminals,

[0062] Figure 12 The side sectional view shows the terminal block with an inserted electrical wire in the open position.

[0063] Figure 13 The terminal block of the wire with clamped wire is shown in a side sectional view in the clamped position. Detailed Implementation

[0064] Figure 1 A spring-force clamping connector 1 is shown, which includes a busbar 3, a clamping spring 4, and a manual operating element 6. The busbar 3 has a body 30, which is configured as a substantially flat plate member and forms the majority of the busbar 3. A contact section 31 of the busbar 3 is bent out from the body 30. The contact section 31 is used for electrical contact with the wire to be connected.

[0065] The clamping spring 4 has a contact leg 41 and a clamping leg 43. The contact leg 41 is used to support the clamping spring 4 and to support the clamping spring 4 relative to the spring force of the clamping leg 43. The clamping leg 43 is used to clamp the wire at the contact section 31 in such a way that the spring force is transmitted to the wire towards the contact section 31 through the clamping leg 43 in the clamping position of the spring force clamping connector 1.

[0066] The backrest leg 41 is connected to the clamping leg 43 via a spring bow 42. Here, Figure 1 An embodiment of a clamping spring 4 in the form of a cage-type tension spring is shown. In this embodiment, a spring bow 42 is connected to a clamping leg 43 via a back section 44 of the clamping spring 4. Figure 1 As shown, the back section 44 is used to transmit manual operating force to deflect the clamping leg 43 into the open position. To manually deflect the clamping leg 43 into the open position, an external tool or, as shown in [the diagram], [can be used]. Figure 1 As shown, the operating element 6 is used, for example, in the form of an operating press, which is part of the spring-force clamping connector 1. The operating element 6 can be movable, for example, in a linear direction of movement. If a manual operating force is applied to the operating surface 60 of the operating element 6, the operating element 6 moves along the back section 44 and is pressed against the back section 44 by the operating force via the operating section 61 of the operating element 6.

[0067] The abutment leg 41 extends through the opening in the busbar 3 by means of a support section 40 and is supported at the busbar 3 in the manner described above. The support section may have a reduced width compared to the portion of the abutment leg 41 adjacent to the spring bow 42.

[0068] The spring-loaded clamping connector 1 also has an automatic holding function for the clamping leg 43 in the open position and an automatic releasing function for releasing the clamping leg 43 from the open position when an electrical wire is inserted. For this purpose, the spring-loaded clamping connector 1 has a holding element 5 and a releasing element 8. The holding element holds the clamping leg 43 in the open position, and the releasing element releases the clamping leg 43 from the open position, causing it to spring back and clamp the electrical wire against the contact section 31. The releasing element 8 has a releasing section 80, which is located behind the clamping leg 43 in the wire introduction direction L and can be applied by inserting an electrical wire with an operating force.

[0069] The retaining element 5 has at least one first locking element 50, by means of which the retaining element 5 is in Figure 1The open position shown engages with at least one second locking element 49 of the clamping leg 43, wherein the clamping leg is held in the open position by means of the locking. The retaining element 5 may, for example, be connected to the abutment leg 41 and / or the busbar 3 to secure and hold the retaining element 5 in its position. In the illustrated embodiment, the retaining element 5 is box-shaped and has at least two side sections 51 that laterally surround a region of a wire receiving space 22 for receiving the free end of an electrical wire. The two side sections 51 may connect to a rear section 52 of the retaining element 5 such that the box-shaped region is also closed at the side by the rear section 52. The rear section 52 may transition angledly into a single piece into the release section 80. In this manner, the retaining element 5, together with the release element 80, can be formed as a structural unit or a single-piece component, such as a single-piece sheet metal component.

[0070] The spring-loaded clamping connector 1 has a cutting blade 7, which is disposed at and secured to the clamping leg 43, for example, in the region of the free end of the clamping leg 43. The cutting blade 7 is configured to automatically cut through the insulation sheath of the cable forming the insulation sheath and expose the stripped insulation section of the conductor disposed within the insulation sheath when the clamping leg 43 moves from the open position to the clamped position.

[0071] Figure 2 and Figure 3 The clamping spring 4 is shown as a single component. As can be seen, the clamping spring 4 has a window-shaped through opening 48 at the clamping leg 43, through which at least a portion of the abutment leg 41, particularly the support section 40, extends. The window-shaped through opening 48 is defined on two opposing sides by narrow webs of the clamping leg 43, each of which can respectively form a second locking element 49. As can be seen, the support section 40 is narrower than the portion of the abutment leg 41 adjacent to the spring bow 42. Laterally projecting material areas of the abutment leg 41 form bent support tabs 45 on both sides of the support section 40. The bent support tabs 45 may, for example, function to retain the clamping spring 4 or the entire spring force clamping connector 1 within the housing of the terminal block.

[0072] It can also be seen that a gap or opening 46 is formed at the abutment leg 41. The retaining element 5 can be engaged into the gap or opening 46 by means of the fixing section 53, such as Figure 1 As shown, this allows the retaining element 5 to be secured to the clamping spring 4. Figure 2 and Figure 3It is also shown that a functional tab 47 can be formed at the clamping leg 43, particularly in the region of the free end of the clamping leg 43, for example in the form of a short tab extending toward the side of the spring bow 42. The functional tab 47 is used to clamp electrical wires. For this purpose, the functional tab 47 can have wire clamping edges. The functional tab 47 can also have other functions, such as serving as a positioning aid or a blade holder for the cutting blade 7. For example, the cutting blade 7 can be fixed at the functional tab 47, for example, by form-fitting.

[0073] Figure 4 and Figure 5 The cutting blade 7, as a separate component, is shown along with other details. As can be seen, the cutting blade 7 may have a base 70, from which two cutting arms 71, spaced apart by an intermediate space 74, extend substantially parallel to each other. A cutting edge 72 is formed at each cutting arm 71, for example, in the region of the free end of the cutting arm 71 opposite to the base 70. The cutting blade 7, composed of the base 70 and the cutting arms 71, may be configured, for example, as a sheet metal component or as another component with sufficient rigidity for the cutting process, such that the cutting edge 72 can be formed on said component. The cutting arms 71 are spaced apart from each other in the region of the cutting edge 72 by a cutting gap 73. The portion of the intermediate space 74 connecting the cutting gap 73 and the base 70 may be wider than the cutting gap 73.

[0074] It can also be seen that a spacing retainer 75 can be placed on the relatively flat cutting blade 7, the spacing retainer having a greater material thickness than the base 70 and the cutting arm 71. The spacing retainer 75 can have substantially the same shape as the base 70 together with the cutting arm 71 in a top view, wherein at least the cutting blade 72 protrudes slightly relative to the spacing retainer 75. The spacing retainer 75 is used to at least largely avoid direct contact between the electrical wires located within the insulating sheath and the sharp cutting blade 72, so as to minimize damage to the electrical wires. The spacing retainer 75 is also configured with an inclined portion 76, such as a linear or arc-shaped ramp-like upward inclined portion. Through the inclined portion 76, the portions of the insulating sheath cut by the cutting blade 72 can be pushed apart from each other in a defined manner, thereby exposing a defined area of ​​the electrical wires inside.

[0075] Figure 6The retaining element 5, combined with the releasing element 8, is shown as a single component. As can be seen, a first locking element 50 can be configured at each side segment 51. Here, the rear segment 52 is connected to the fixing segment 53 via a connecting segment 54. The connecting segment 54 is configured to be narrower than the rear segment and can be spring-loaded in such a way as to move the retaining element 5 back to its initial position, for example. The side segments 51 can be coupled to the releasing segment 80 via a form-fit connection, such that forces orthogonally applied to the releasing segment 80 are transmitted to the side segments 51, thereby allowing the entire retaining element 5 together with the releasing element 8 to pivot slightly or otherwise displace in order to release the first locking element 50 from the second locking element 49.

[0076] Figure 7 The busbar 3 is shown as a separate component. It can be seen that a wire pass-through opening 32 is formed in the main body 30, through which the electrical wire to be connected can pass. Furthermore, a slit 34 is laterally formed on both sides of the main body 30, through which a first locking element 50 can extend laterally along the busbar 3 to the clamping leg 43 and its second locking element 49 disposed above it. It can also be seen that a contact section 31 extends from the surface of the main body 30, wherein the contact section 31 can extend through a through opening 48 in the clamping leg 43. The busbar 3 also has a pass-through opening 33 through which the support section 40 of the clamping spring 4 and the connecting section 54 of the retaining element 5 can be guided, for example, in… Figure 8 As can be seen from the text.

[0077] Figure 8 A terminal block 10 with an insulating housing 2 is shown, in which a spring-loaded clamping connector 1 of the type previously described is disposed. The insulating housing 2 has a wire inlet opening 20 through which the cable to be connected can be introduced in the wire inlet direction L, and can be guided through the wire throughlet opening 32 of the busbar 3 and the window-shaped through opening 48 in the clamping leg 43 to the previously mentioned wire receiving cavity 22. The insulating housing 2 also has a receiving channel 21 for receiving and guiding the operating element 6.

[0078] Figure 8 The side sectional view shows the terminal 10 in the clamped position, without the introduced cable. Figure 9 The terminals in the clamped position are shown in a side view, making it particularly clear that the first locking element 50 remains below the clamping leg 43 in the said state, i.e., it is not locked with the second locking element 49.

[0079] Figure 10 and Figure 11The terminal 10, i.e., the clamping leg 43, is shown in the open position, which is shifted to the right by operating the operating element 6, wherein the clamping leg 43 is held in the open position by the locking of the first locking element 50 and the second locking element 49.

[0080] exist Figure 9 and Figure 11 As can be seen, the cutting blade 7 is guided within the slit-like opening 23 of the insulating material housing 2. Therefore, the clamping leg 43 and the cutting blade 7 cannot be removed from the busbar 3.

[0081] like Figure 12 As shown, if cable 9 is now introduced through wire inlet 20 and threaded through to release section 80, cable 9 applies an operating force to release section 80 with its free end. As a result, release section 80, together with retaining element 5, shifts slightly downward and / or pivots, as... Figure 13 As indicated. Thus, the latch between the first locking element 50 and the second locking element 49 is released. Due to the spring force of the clamping spring 4, the clamping leg 43 springs back towards the clamping position. Here, the insulating sheath 90 of the cable 9 is cut open by the cutting blade 7. Here, the separated portions of the insulating sheath 90 are pushed apart, particularly by the spacing retainer 75, resulting in the exposed portion 92 of the internal conductor 91. The exposed portion 92 is now pressed against the contact portion 31 by the clamping leg 43, thereby establishing a conductive connection between the conductor 91 and the busbar 3.

[0082] List of reference numerals

[0083] 1. Spring-force clamping connector

[0084] 2. Insulating material housing

[0085] 3 bus

[0086] 4 clamping springs

[0087] 5 retaining elements

[0088] 6 manual operating elements

[0089] 7 cutting blades

[0090] 8 Release components

[0091] 9 cables

[0092] 10 terminal blocks

[0093] 20 wires introduced into the opening

[0094] 21 Accommodation Channels

[0095] 22 Conductor Accommodation Space

[0096] 23. Slit-like opening

[0097] 30 main bodies

[0098] 31 contact section

[0099] 32 wire threading opening

[0100] 33-hole opening

[0101] 34. Empty section

[0102] 40 Support Section

[0103] 41 leg rests

[0104] 42 Spring Bow

[0105] 43. Clasp your legs together

[0106] 44 Back Section

[0107] 45 support joint

[0108] 46. ​​Empty section

[0109] 47-function splice

[0110] 48 window-shaped through openings

[0111] 49 Second locking element

[0112] 50 First locking element

[0113] 51 Side Section

[0114] 52 rear section

[0115] 53 Fixed Section

[0116] 54 Connecting Section

[0117] 60 operating surfaces

[0118] 61 Operation Section

[0119] 70 matrix

[0120] 71 cutting arm

[0121] 72 cutting edge

[0122] 73 Cutting gap

[0123] 74 intermediate space

[0124] 75-pitch retainer

[0125] 76 Inclined section

[0126] 80 loosening section

[0127] 90 insulation sheath

[0128] 91 electrical conductor

[0129] 92 Exposed sections

[0130] L-direction of wire introduction

Claims

1. A spring-force clamping connector (1) for clamping a cable (9) with an insulating sheath, wherein at least one electrical conductor is disposed within the insulating sheath, wherein the spring-force clamping connector (1) has at least one busbar (3) and a clamping spring (4), wherein the clamping spring (4) has a clamping leg (43) and a contact leg (41), the clamping leg being configured to clamp the electrical conductor at a contact segment (31) of the busbar (3), and the contact leg being configured to support the clamping spring (4) at the busbar (3), characterized in that, The spring-force clamping connector (1) has a cutting blade (7) provided at the clamping leg (43), the cutting blade being configured to automatically cut open the insulating sheath and expose the stripped section of the electrical wire inside when the clamping leg (43) moves from the open position to the clamping position.

2. The spring-force clamping connector according to claim 1, characterized in that, The spring-force clamping connector (1) has a spacing retainer (75) provided at the cutting blade (7), the spacing retainer being configured to push the insulating sheaths cut by the cutting blade (7) apart from each other and thereby expose the electrical wires inside.

3. The spring-force clamping connector according to claim 2, characterized in that, The spacing retainer (75) is formed of plastic material and / or insulating material.

4. The spring-force clamping connector according to claim 2 or 3, characterized in that, The spacing retainer (75) is configured to space the electrical wires from the cutting blade (7) during the cutting of the insulating sheath by the cutting blade (7).

5. The spring-force clamping connector according to any one of claims 2 to 4, characterized in that, The spacing retainer (75) has at least one inclined portion (76), and when measured in a plane perpendicular to the cutting blade (7), the material thickness of the spacing retainer (75) at the inclined portion increases in a direction away from the contact section (31).

6. The spring-force clamping connector according to any one of the preceding claims, characterized in that, In the clamped position, the exposed, stripped portion of the conductor can make electrical contact with the contact portion (31), especially when the conductor is not in contact with the cutting blade (7).

7. The spring-force clamping connector according to any one of the preceding claims, characterized in that, The cutting blade (7) has two cutting edges (72) facing each other, with a cutting gap (73) between the cutting edges.

8. The spring-force clamping connector according to claim 7, characterized in that, The cutting blade (7) has a base (70) from which two cutting arms (71) extend, spaced apart from each other by a central space (74), and one of the cutting blades (72) is provided at each of the cutting arms.

9. The spring-force clamping connector according to claim 8, characterized in that, An intermediate space (74) is formed between the cutting arms (71) and away from the cutting blade (72), the intermediate space being wider than the cutting gap (73).

10. The spring-force clamping connector according to any one of the preceding claims, characterized in that, The clamping spring (4) is configured as a cage-type tension spring.

11. A spring-force clamping connector (1) for clamping electrical wires by means of spring force, particularly a spring-force clamping connector (1) according to any one of the preceding claims, wherein the spring-force clamping connector (1) has at least one busbar (3) and a clamping spring (4), wherein the clamping spring (4) is configured as a cage-type tension spring and has a retaining leg (41) and a clamping leg (43) with a window-shaped opening (48), the retaining leg being used to support the clamping spring (4) at the busbar (3), wherein the retaining leg (41) and / or the busbar (3) extends through the window-shaped opening (48), wherein the busbar (3) has a body (30), the body being configured as a substantially flat plate member and / or forming the majority of the busbar (3), characterized in that, The main body (30) is arranged substantially orthogonal to the abutment leg (41) and / or substantially parallel to the clamping leg (43).

12. The spring-force clamping connector according to claim 11, characterized in that, The busbar (3) has a wire pass-through opening (32), through which an electrical wire clamped at the spring clamping connector (1) can pass.

13. The spring-force clamping connector according to any one of claims 11 to 12, characterized in that, The busbar (3) has a contact section (31) that bends out from the plane of the body (30) and extends through the window-shaped opening (48).

14. The spring-force clamping connector according to any one of claims 11 to 13, characterized in that, At least one support tab (45) is formed at the abutment leg (41) that is bent substantially parallel to the clamping leg (43).

15. The spring-force clamping connector according to any one of the preceding claims, characterized in that, The spring-force clamping connector (1) has a retaining element (5) configured to hold the clamping leg (43) in the open position.

16. The spring-force clamping connector according to claim 15, characterized in that, The spring-force clamping connector has a release element (8), which, when operated, allows the retaining element (5) to deflect so that the clamping leg (43) held at the retaining element (5) is released from the retaining element (5).

17. The spring-force clamping connector according to claim 16, characterized in that, When the wire to be clamped applies an operating force to the release section (80) of the release element (8), the clamping leg (43) held in the holding element (5) in the open position can be released from the holding element (5).

18. The spring-force clamping connector according to claim 16 or 17, characterized in that, The retaining element (5) is box-shaped and has at least two side sections (51), which at least on both sides surround the area of ​​the wire receiving space (22) for receiving electrical wires.

19. The spring-force clamping connector according to any one of claims 16 to 18, characterized in that, The release section (80) extends laterally from one side section (51) toward the other side section (51).

20. The spring-force clamping connector according to any one of claims 16 to 19, characterized in that, The holding element (5) and the releasing element (8) are implemented as a structural unit in the form of a combined holding-releasing element (5, 8).

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

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