Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
  • H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
  • H01R11/09—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being identical
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/28—Clamped connections, spring connections
  • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
  • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
  • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
  • H01R4/483—Pivoting arrangements, e.g. lever pushing on the spring
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/28—Clamped connections, spring connections
  • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
  • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
  • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
  • H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
  • H01R4/4821—Single-blade spring
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/28—Clamped connections, spring connections
  • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
  • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
  • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
  • H01R4/4835—Mechanically bistable arrangements, e.g. locked by the housing when the spring is biased
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/28—Clamped connections, spring connections
  • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
  • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
  • H01R4/4846—Busbar details
  • H01R4/485—Single busbar common to multiple springs

Definitions

• the invention relates to a conductor terminal with at least one spring-loaded clamping connection for connecting an electrical conductor by means of spring force, wherein the spring-loaded clamping connection has a clamping spring and a busbar section associated with the clamping spring, between which a clamping point for clamping the electrical conductor is formed, and with a pivotable actuating lever associated with the spring-loaded clamping connection for actuating the clamping spring, wherein the actuating lever has at least one support element which has a support surface facing the busbar section, over which the actuating lever is supported on a bearing area of the busbar section.
• Such a conductor connection terminal is, for example, made from the EP 3 111 513 B1 known.
• Such a conductor terminal block can, in particular, be designed with several spring-clamp terminals that are electrically connected to each other and thus form a connecting terminal. From the DE 20 2018 106 896 U1 A spring-loaded terminal block for connecting an electrical conductor is known.
• the invention is based on the objective of further improving such a conductor connection terminal.
• the bearing area of the busbar section can have a concave curved contour.
• the bearing area is thus located in the same busbar section where the clamping point for connecting the electrical conductor is formed.
• the bearing area is therefore a region of the busbar section facing the bearing surface of the actuating lever, along which the actuating lever can slide during a pivoting movement.
• the concavely curved contour of the bearing area reduces the overall height of the conductor terminal block.
• the bearing of the actuating lever is improved, and wear occurring during pivoting is minimized. It is advantageous if the bearing element has a convexly curved support surface facing the busbar section.
• the busbar section or busbar can be predominantly flat in areas immediately adjacent to the bearing area.
• the normal of the busbar section can be predominantly perpendicular to the axis of rotation of the operating lever.
• the busbar section can be continuous between the bearing area and the clamping point or a conductor guide surrounding the clamping point, i.e., stepless, without a slot and/or punched edge.
• the bearing area of the busbar section is designed as a recess in the busbar section, forming a trough-like or channel-like depression in relation to adjacent flat areas of the busbar section.
• This also enables further miniaturization of the conductor terminal. This allows the overall height of the conductor terminal to be further reduced.
• previously unused areas available in the housing of the conductor terminal below the busbar can be utilized if the recess is created as an indentation in the busbar, resulting in a bulge in the busbar on the side facing away from the bearing area.
• the invention offers the advantage of at least a reduced risk of individual strands of a stranded conductor becoming trapped between the bearing surface on the actuating element and the bearing area of the busbar section, since the strands are generally supported on a bearing surface raised above the bearing area.
• One of the aforementioned adjacent flat areas of the busbar section may, for example, be a conductor installation area where a [connection] is located.
• the terminal point is where the electrical conductor to be clamped is arranged and rests on the surface of the busbar section.
• Such a conductor contact area can have a flat surface.
• a conductor contact area can be arranged between two adjacent, recessed support areas, each forming a trough-like or channel-like depression.
• both variants of the invention can also be advantageously combined by providing the recess in the busbar section with a concave curved contour.
• the recess in the busbar section can also have a flat or convex curved contour.
• the recess in the busbar section can be deepened, for example, in relation to the clamping point formed on the busbar section.
• the recess in the busbar section can have a depth that is at least 20% of the material thickness of the busbar section.
• the busbar can be higher across the entire width of the conductor, i.e., it can run closer to the axis of rotation of the actuating lever than within the recess.
• the largest dimension (length) of the recess can extend parallel to the conductor insertion direction.
• the bearing elements of the actuating lever e.g., in the form of bearing discs, can also be guided axially by the recesses in the busbar.
• the recess in the busbar section can have a depth that is at least 3% or at least 5% of the radius of curvature of the bearing element of the actuating lever in the area of its bearing surface.
• the recess in the conductor rail section can have a depth that is at most 15% or at most 20% of the radius of curvature of the support element of the actuating lever in the area of its support surface.
• the invention can also reduce the load on the bearing of the actuating lever, especially when pivoting, i.e. when opening or closing.
• the invention allows the actuating lever to be better embedded in the busbar section and to be moved closer to the busbar section overall.
• the invention enables a conductor terminal block with a low-profile housing featuring increased clearance and creepage distances.
• the contact surface of the actuating lever in the bearing area can be enlarged.
• the actuating lever can be designed to be more robust overall.
• the invention allows for the transmission or absorption of larger actuating forces, particularly to the busbar, via the actuating lever.
• the aforementioned problem is solved by arranging at least one test bottle on the busbar, which can be electrically contacted by means of a test probe inserted into the housing.
• the test bottle can, for example, be arranged between adjacent spring-clamp terminals, thus also facilitating a flat design, as is also the case with the recessed bearing areas.
• the test bottle can be designed as an angled test bottle.
• the housing can have a test opening through which the test probe can be inserted.
• the housing can have a test channel into which the test bottle projects, and the test bottle can be electrically contacted by means of a test probe inserted through the test channel.
• the test probe can be integrally formed with the busbar or designed as a separate component attached to the busbar. If the busbar has mounting frames, as explained below, such a test probe can be positioned between adjacent mounting frames.
• the test probe does not necessarily have to be positioned directly between the mounting frames, but can be offset in the conductor insertion direction.
• the test probe can be oriented with a section angled relative to the flat area of the busbar, predominantly perpendicular to the direction of the clamping points, e.g., predominantly parallel to the mounting frames.
• a standard electrical test probe can be used as the test probe. Alternatively, a screwdriver blade can be used.
• the concave curved contour of the bearing area is defined with respect to its curvature profile.
• the operating lever is adapted to the curvature profile of the convexly curved contour of the support surface. This allows for particularly good embedding of the operating lever in the bearing area of the busbar section.
• the operating lever can, for example, have an arc-shaped, convexly curved contour at the support surface.
• the bearing area can have an arc-shaped, concavely curved contour.
• the radius of curvature of the concavely curved contour can be constant or vary along its entire curved path.
• the radius of curvature of the concavely curved contour of the bearing area can be at least as large at any point as the radius of curvature of the convexly curved contour of the support surface.
• the radius of curvature of the concavely curved contour can be at least 10% or at least 20% larger at any point than the radius of curvature of the convexly curved contour of the support surface.
• the averaged radius of curvature of the concave contour of the bearing area over the curved path can also be, for example, at least 10% or at least 20% larger than the averaged radius of curvature of the convex contour of the bearing surface.
• the axis of rotation of the actuating lever's pivoting movement can be a fixed axis throughout the movement or an axis that changes at least slightly.
• the conductor terminal can be designed as a single-pole or multi-pole terminal. It can also be designed as a connector or part of an electrical connector. In this case, the connector has one or more electrical contacts. The spring-clamp terminal is then electrically connected to at least one of these contacts.
• a support element or its support surface can be assigned a corresponding concavely curved and/or recessed support area of the busbar section, the width of which is essentially (except for tolerances) the width of the The support element corresponds to the bearing surface.
• the concavely curved contour in the bearing area and/or the bearing area designed as a recess in the busbar section can be formed as a comparatively narrow channel whose width is less than its length, in each case viewed in the direction of insertion of the electrical conductor into the spring-clamp terminal.
• the individual busbar sections of the spring-clamp terminals can be parts of a continuous busbar.
• This continuous busbar can be formed from a single piece of metal or assembled from several metal parts, e.g., via a positive-locking, force-locking, and/or material-locking connection.
• the conductor terminal is designed as a multi-pole conductor terminal in which several spring-clamp terminals are arranged side by side or opposite each other.
• Each spring-clamp terminal has a clamping spring and a busbar section associated with the clamping spring, and each spring-clamp terminal is associated with an actuating lever.
• the busbar sections are parts of a continuous busbar, and the concavely curved contour of the bearing area and/or the bearing area designed as a recess in the busbar section extends continuously from a bearing element of an actuating lever at least to a bearing element of an immediately adjacent actuating lever, or continuously across the busbar sections of several or all spring-clamp terminals.
• a concavely curved contour of the bearing area and/or a bearing area designed as a recess in the busbar section can be shaped in such a way that it extends only from a support element of an actuating lever to a support element of an immediately adjacent actuating lever and not beyond. This results in gaps between such concavely curved Contours and/or recesses that can be advantageously adapted for other functional purposes, e.g. to form a clamping point for the electrical conductor.
• the continuously extending concavely curved contour of the bearing area and/or the bearing area designed as a recess in the busbar section is at least partially interrupted at least at one clamping point by another contour, in particular a clamping contour.
• the actuating lever is pivotable within the concavely curved contour and/or the recess about a rotational axis (D) that extends transversely to the conductor insertion direction of the associated spring-clamp connection.
• the curvature of the concavely curved contour, or the central axis of this curvature, is then aligned transversely to the conductor insertion direction and/or parallel to the rotational axis.
• the busbar section has a clamping edge for attaching the electrical conductor. This allows for particularly secure clamping of the electrical conductor to the busbar section.
• the clamping edge of the busbar section can be designed as a relatively sharp edge that can dig slightly into the material of the clamped electrical conductor.
• the clamping spring of the spring-loaded clamping connection can have a clamping leg that may also have a clamping edge at its free end. This makes the clamping of the electrical conductor on the clamping leg more reliable.
• the clamping edge of the busbar section is located next to or behind the concave contour of the bearing area and/or the recess in the conductor insertion direction.
• the conductor terminal is arranged in the bearing area formed within the busbar section. This allows the conductor connection terminal to be designed to be particularly compact, even in the conductor insertion direction.
• the clamping point for connecting the electrical conductor to the busbar section is located next to or behind the concave contour of the bearing area and/or the bearing area designed as a recess in the busbar section, in the conductor insertion direction. This also allows the conductor connection terminal to be designed to be particularly compact in the conductor insertion direction.
• the clamping edge is designed as the edge of a recess pressed into the busbar section.
• the clamping edge can be produced in the busbar section in a manufacturingly simple manner without excessively weakening or damaging the material of the busbar section.
• the recess can, for example, have a bent contour in cross-section, and in particular not a curved contour like the bearing area.
• the length of the depression embossed in the busbar section is less than the length of the concave curved contour of the bearing area and/or the bearing area designed as a depression in the busbar section.
• the actuating lever has two spaced-apart, parallel support elements, each with a bearing surface facing the busbar section, e.g., with a convexly curved contour, over which the actuating lever rests on the bearing area of the busbar section. This ensures that the actuating lever is securely supported on the busbar section. Even with very compact conductor terminals, the actuating lever can be designed to be relatively robust and thus transmit high actuating forces to the clamping spring.
• more than two spaced-apart, Parallel support elements may be present, for example, if two clamping springs arranged next to each other are to be actuated simultaneously with an operating lever.
• the clamping point of the electrical conductor and/or, if a clamping edge of the busbar section is present this clamping edge is arranged in a space formed between the two spaced-apart, parallel support elements. This allows the space between the support elements to be used for positioning the electrical conductor.
• the conductor terminal can thus be designed to be particularly compact.
• the concavely curved contour of the bearing area and/or the bearing area designed as a recess in the busbar section extends continuously from a support element of an actuating lever at least to the nearest support element of an immediately adjacent actuating lever.
• a receiving space for the electrical conductor clamped to the spring-loaded terminal is formed between the support elements of an actuating lever. This also promotes a particularly compact and small-scale design of the conductor terminal. The space enclosed by the actuating lever can thus be advantageously used to accommodate the electrical conductor.
• At least a portion of the clamping spring in particular the predominant portion of a clamping leg of the clamping spring, is arranged in a region between the support elements of an actuating lever.
• the clamping leg can initially have a greater width extending from a spring arc of the clamping spring and then taper to a smaller width towards its free end. In the wider section of the clamping leg, actuating sections of the actuating lever can transmit their actuating forces to the clamping leg.
• the actuating lever has two spaced-apart side wall sections that extend at least partially into the housing of the conductor terminal and are each connected to one of the support elements via a connecting section.
• This allows for the creation of a robust actuating lever that is integrated with the housing of the conductor terminal and, in particular, with certain housing walls. This enables large clearances and creepage distances to be achieved even with compact conductor terminals.
• By arranging the support elements in the concavely curved contours and/or recesses additional installation space is created for a robust design of the transition on the actuating lever between the support elements and the side wall sections; that is, the respective connecting section can be made with more material and thus be more robust.
• the actuating lever can be designed with a side wall section, a connecting section connected to the side wall section, and a support element connected to the connecting section, resulting in a U-shaped contour. Because these contours are present twice (to the left and right of the clamping point), the actuating lever thus has a double U-contour in the area of the support elements.
• the support elements form a pivot axis (D) about which the actuating lever is pivotably mounted in the housing, wherein the support elements have actuating sections, each of which is for acting upon an associated clamping spring.
• the invention features a spring-loaded clamp connection that, when the actuating lever is pivoted from a closed position (where the lever's crossbar is pivoted towards the housing and a clamping point formed by the spring-loaded clamp connection is closed for connecting an electrical conductor) to an open position (where the lever's crossbar is pivoted away from the housing and a clamping point formed by the spring-loaded clamp connection is open for connecting an electrical conductor).
• the actuating lever remains in its open position; that is, it does not automatically return to the closed position.
• the actuating lever can be latched in the open position and/or be in an over-center position.
• the actuation sections on the support elements are arranged at a smaller distance from each other than the distance between the side wall sections.
• the actuation sections extend parallel to the side wall sections and are integrally shaped with the side wall sections such that a guide slot is provided between each actuation section and the directly adjacent side wall section.
• a guide web of the housing then engages in an associated guide slot to guide the actuating lever during pivoting about a pivot axis in the pivot bearing area.
• the actuation sections spaced apart from the side wall sections of the U-shaped lever arm by an intermediate guide slot, allow the lever arm to be pivotally and securely mounted by a guide rib of the housing that engages in a respective guide slot.
• These guide slots and the guide ribs engage with them enable the creation of space-saving, highly stable pivot bearings, which are essentially located laterally next to the spring-clamp terminals.
• the actuating lever is therefore approximately U-shaped in cross-section and accommodates the spring-loaded clamping connection at least partially within the space laterally limited by the side wall sections.
• the pivot bearing areas are thus located neither above, below, in front of, nor behind the spring-loaded clamping connection, but rather laterally next to the spring-loaded clamping connection or the clamping spring of the spring-loaded clamping connection to be actuated.
• a guide web of the housing dips into an associated guide slot to guide the actuating lever during a pivoting movement about a rotational axis (D) in the pivot bearing area.
• the actuating sections have a semicircular outer circumference with a cutout to form a shoulder projecting towards the center of the actuating section.
• the at least one spring-clamp connection has a clamping spring with an actuating tab, and the actuating tab of the clamping spring rests on the shoulder when the actuating lever is pivoted to open the clamping point.
• a shoulder to which an overlying clearance is attached, provides a stable support for the actuating tab of the clamping spring, so that the spring actuating force is optimally transmitted via the shoulder to the clamping tab of the clamping spring.
• the shoulder projecting towards the center of the actuating section provides an overlying clearance, allowing the clamping spring to lift freely from the shoulder even without lever actuation, thus exerting a spring clamping force on the to exert force on the electrical conductor unaffected by the lever arm. This also allows for the direct insertion of the electrical conductor without the need to first deflect the clamping arm with the operating lever.
• the described design of the conductor terminal allows for an increased transition from the support element, across the crossbar, to the side wall section, while simultaneously increasing the clearance to the busbar, without requiring a higher-profile conductor terminal itself.
• the contact area between the actuating lever and the busbar section can be shaped like a concave, curved pan. Compared to the prior art, this contact area can be modified from a purely linear contact to a more surface-based contact. This reduces the stress on the contact area and minimizes wear. Additionally, the actuating lever is guided more effectively during pivoting movements.
• the recess in the busbar section transitions in steps into an adjacent raised area of the busbar section on at least one side, and/or transitions continuously into an adjacent raised area of the busbar section on at least one side.
• one or both longitudinal sides of the recess, which run parallel to the conductor insertion direction can transition in steps into the adjacent raised area, while the sides running transversely to the conductor insertion direction can transition continuously.
• a stepped transition can, for example, be a transition with a sharp cut edge formed by a tool.
• a continuous transition can be a smooth transition over, for example, a slope or a rounded contour, i.e., a transition with a continuous material that is deformed without cutting.
• the indefinite term "a” is not to be understood as a numeral. Therefore, when, for example, reference is made to a component, this is to be interpreted as "at least one component”. Where angles are specified in degrees, these refer to a circle of 360 degrees (360°).
• the Figure 1 Figure 1 shows a conductor terminal 1, which is shown here as an example of a three-pole design.
• the conductor terminal 1 has a housing 2 in which three spring-clamp terminals are arranged side by side. Each spring-clamp terminal A conductor entry opening 20 is located in the housing 2. An electrical conductor can be guided through the conductor entry opening 20 to a clamping point of the spring-clamp terminal.
• the conductor terminal 1 also has three actuating levers 5. Each actuating lever 5 is assigned to one of the spring-clamp terminals.
• the clamping spring of the spring-clamp terminal can be actuated by the respective actuating lever, thereby opening or closing the clamping point as desired.
• each spring-loaded clamp connection has a clamping spring 4 and a busbar section 37 associated with the clamping spring 4.
• the clamping spring 4 has a contact leg 41, a spring arc 42 adjoining the contact leg 41, and a clamping leg 43 adjoining the spring arc 42.
• the contact leg is hooked onto a retaining frame 30 by means of an end-end retaining element 40. In this way, the clamping spring 4 is attached to the retaining frame 30 via its contact leg 41.
• the clamping arm 43 rests against a contact section 31 of the associated busbar section 37. If an electrical conductor is connected, it is clamped between the free end of the clamping arm 43 and the contact section 31.
• the retaining frame 30 is connected to the contact section 31 or, in the illustrated embodiment, is formed integrally with it. In this way, a self-supporting spring-loaded clamping connection is formed, in which the clamping spring 4 is held on both sides by the busbar 3.
• the actuating lever 5 has a manual actuating section 50, which allows it to be manually actuated and thus pivoted.
• the manual actuating section 50 projects at least partially out of the housing 2 above the conductor entry opening 20, making it easier to grasp.
• Side wall sections 52 extend from the manual actuating section 50 into the housing 2. As will be described in more detail below, the side wall sections 52 are connected to support elements 51, via which the actuating lever 5 is supported on the busbar 3.
• the support elements 51 have actuation sections 53, which serve for mechanical actuation and, accordingly, for deflection of the clamping arm 43 when the actuating lever 5 is pivoted.
• the actuation section 53 comes into contact with the clamping arm 43 and lifts it away from the busbar section 37. In this way, the clamping point is opened.
• An electrical conductor can then be inserted through the conductor entry opening 20 in a conductor insertion direction L to the clamping point between the clamping arm 43 and the busbar section 37 without force. The electrical conductor can then be clamped there by returning the actuating lever 5 to the closed position (as shown in Figure 2 (shown) is shifted.
• the actuating lever 5 is supported on the busbar section 37 via its support elements 51, more precisely via their support surfaces 54 facing the busbar section 37.
• the bearing surface 54 extends into the depicted section plane of the busbar section 37, which is due to the recessed bearing areas present in the busbar section 37, which will be explained below.
• the busbar 3 of the previously described conductor connection terminal 1 is shown as a separate component. It can be seen that the busbar 3 has a busbar section 37 for each of the three spring-clamp terminals.
• the contact section 31 is thus structured into three busbar sections 37.
• the contact section 31 transitions on one side of the busbar 3 into a respective retaining frame 30 of the respective busbar section 37.
• the clamping springs 4 with their retaining elements 40 are hooked onto the retaining frames 30.
• the busbar 3 has a flat area 32 in the contact section 31.
• Support areas 36 and clamping contours 34 are recessed relative to this flat area 32, for example by embossing with an embossing tool.
• the clamping contours 34 serve to clamp the electrical conductor in the respective busbar section 37.
• a clamping edge 35 of the respective busbar section 37 is formed.
• the bearing areas 36 serve to receive and support the support elements 51 of the actuating levers 5.
• Each bearing area 36 has a concavely curved contour, which, for example, is arc-shaped.
• the individual bearing areas 36 are each interrupted by conductor contact areas 33, on which the electrical conductors to be clamped are to be arranged.
• the conductor contact areas 33 can, for example, have a similar flat shape to the flat area 32, i.e., they can be designed with a flat surface.
• one of the aforementioned clamping contours 34 can be arranged in each conductor contact area 33.
• the busbar 3 is shown according to Figure 3 with a clamping spring 4 attached to the right-hand busbar section 37 and with an actuating lever 5 and a clamping spring 4 attached to the far left-hand busbar section 37. It can be seen how the actuating lever 5 with the bearing surface 54 of the bearing element 51 is well inserted into the concavely curved bearing areas 36 and can slide along the bearing areas 36 during a pivoting movement.
• FIG. 6 Figure 1 shows an embodiment of a busbar 3 in which the bearing area 36 with the convexly curved contour extends continuously over the entire width of the busbar 3. Only in the areas rearward in the conductor insertion direction L is the concavely curved contour partially interrupted by clamping contours 34, which are raised relative to the convexly curved contour. Here, too, a clamping edge 35 of the respective busbar section 37 is formed at the rear end of each clamping contour 34 in the conductor insertion direction L.
• the Figure 7 The figure shows a perspective view of an actuating lever 5 from below. This reveals its essentially U-shaped cross-sectional design with two spaced-apart side wall sections 52, which are connected at their free ends along a side edge by a crossbar 59. It is evident that the side wall sections 52 taper from the pivot bearing areas 62 towards their free ends. An actuating ridge 60 is visible at the free end of the crossbar 59. It is also evident that the crossbar 59, with the actuating ridge 60, projects forward beyond the free ends of the side wall sections 52, with the inner surfaces of the crossbar 59 inclined at the free end edge. This prevents slippage when an actuating force is applied to the actuating lever 5.
• semicircular sections spaced apart by a guide slot 57, are arranged on the side wall sections 52 in the pivot bearing area 62, forming respective support elements 51.
• a receiving space 58 for receiving the electrical conductor clamped to the spring-clamp terminal is formed between the support elements 51.
• the support elements 51 have semicircularly curved outer end faces, forming support surfaces 54, with which the actuating lever 5 is supported on the bearing areas 36 and pivotably arranged in the housing about a virtual axis of rotation D.
• the axis of rotation D extends through the center of a semicircle formed by the support surface 54.
• the support elements 51 each have a V-shaped recess 56. Within the area of the V-shaped recesses 56, an actuation section 53 is formed, which serves to actuate an associated clamping leg 43 of a clamping spring 4 with a spring actuation force. It can be seen that the actuation sections 53, as well as the transverse web 59, on which a lever pivoting force is exerted, are located on the same side relative to the axis of rotation D when viewed in the longitudinal direction of the side wall sections 52. This results in the spring actuation forces exerted via the actuation sections 16 acting on the same side relative to the axis of rotation D as the lever pivoting force applied to the transverse web 59 for pivoting.
• a locking lug 61 protrudes from the crossbar 59 on the side opposite the actuating bead 60, approximately in the direction of the pivot bearing area 62 and the support element 51.
• the locking lug 61 serves to engage the actuating lever 5 with the housing 2 in the closed position.
• the Figure 8 omits a side-section view through the operating lever 5 Figure 7 It can be seen again that the side wall sections 52 are connected by a crossbar 59 on the upper side of the actuating lever 5.
• the crossbar 59 extends only over a portion of the length of the side wall sections 52 and preferably covers more than half of the length of the side wall sections 52.
• the design of the conductor terminal 1 is such that the conductor entry openings are not only arranged on one side of the housing, but on opposite (away from each other) sides of the housing. Accordingly, the busbar 3 is also double-sided, i.e., with busbar sections 37 arranged on opposite sides. Each busbar section 37 has a clamping contour 34 for clamping the electrical conductor, which has a clamping edge 35 at its rear end in the conductor entry direction L. Between the opposing clamping contours 34, the busbar 3 has a flat area 32.
• Bearing areas 36 for supporting an actuating lever 5 are provided, which are designed as recesses opposite this flat area 32, with a bearing area 36 formed to the left and right of each clamping contour 34.
• the bearing area 36 extends in the conductor entry direction L from an area in front of the clamping edge 35 to an area behind the clamping edge 35.
• the busbar 3 is designed without the previously described retaining frames 30 for holding the clamping springs. Instead, in the flat area 32, i.e., between the opposing clamping contours 34, there is a retaining recess 38 in which the clamping springs 4 can be hooked with an extended area of the mounting leg 41, on which a retaining element 40 is located.
• FIG 10 The arrangement of an actuating lever 5 with its bearing surfaces 54 on the bearing areas 36 is illustrated.
• Figure 11 The bearing of the actuating lever 5 is similar to Figure 10 , however, from a different perspective, in which in particular the receiving chamber 58 for the electrical conductor is recognizable.
• Figure 12 Figure 9 shows an arrangement with the busbar 3, two clamping springs 4 attached to it and actuating levers 5 for actuating the respective clamping springs 4.
• FIG. 13 Figure 1 shows a conductor terminal 1 in which an arrangement according to Figure 12 is installed.
• the fastening of the clamping springs 4 via end-facing retaining elements 40 on the clamping legs 41 is particularly evident. These retaining elements are hooked into the retaining recess 38 in the flat area 32 of the busbar 3.
• the clamping springs 4 can be deflected by applying pressure to the respective actuating surfaces of the clamping leg 43. When the respective actuating lever 5 is pivoted, its actuating sections 53 come into contact with the actuating surfaces, thereby moving the respective clamping leg 43 away from the busbar 3.
• the Figures 14 to 17 show a further embodiment of a busbar 3 as well as further elements of the conductor connection terminal, in which, in contrast to the embodiment of the Figures 9 to 12 Several (here two) busbar sections 37 are arranged side by side on each side of the busbar 3.
• the busbar 3 is otherwise similar to the embodiment of the Figures 9 to 12 formed, in particular with the retaining recess 38 in the flat area 32 of the conductor rail 3.
• the respective central bearing area 36 forms a common, continuous recess, i.e., there are not individual recesses formed there for each conductor rail section 37, but rather a joint exploration.
• the actuating lever 5 for this central area has a wide side wall section 52 which extends at least approximately over the entire width of the recessed bearing area 36.
• conductor entry openings are arranged on opposite sides of the housing.
• the conductor entry openings can also be provided on only one side of the housing 2.
• two separate actuating levers 5 for the different clamping points can be provided on one side of the housing, instead of a single actuating lever 5.
• more than two conductor entry openings and corresponding clamping points are present on one side of the housing.
• Conductor entry openings may also be present on opposite sides of the housing. Accordingly, busbar 3 must then be designed to be double-sided.
• test bottle 39 is arranged on the busbar 3.
• the test bottle 39 is used for electrical contact and thus for carrying out electrical measurements on the busbar using a test probe. It can be seen in the Figure 3 that the test bottle 39 is arranged between two retaining frames 30 and is set back slightly from these retaining frames in the conductor insertion direction L, i.e., is arranged behind the retaining frames 30 in the conductor insertion direction L.
• Figure 5 This is also illustrated.
• Figure 18 Figure 22 shows the conductor connection terminal 1 with the housing 2 in a view of the rear of the housing.
• Figure 19 shows the conductor connection terminal 1 in a comparable sectional view as the Figure 2 , however, in a cross-sectional plane through the test bottle 39.
• a test opening is located on the rear of the housing 22, which a test channel 21 leads to the test bottle 39.
• a test probe can now be guided through the test opening and the test channel 21 to the test bottle 39 and make electrical contact with it.
• the test channel 21 extends in its longitudinal direction essentially perpendicular to the arrangement direction of the clamping points.

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• Connections Arranged To Contact A Plurality Of Conductors (AREA)
• Multi-Conductor Connections (AREA)
• Coupling Device And Connection With Printed Circuit (AREA)

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• 2021
  • 2021-05-19 DE DE102021112960.5A patent/DE102021112960A1/de active Pending
• 2022
  • 2022-05-17 WO PCT/EP2022/063286 patent/WO2022243292A1/de not_active Ceased
  • 2022-05-17 CN CN202280030565.7A patent/CN117203859A/zh active Pending
  • 2022-05-17 JP JP2023571147A patent/JP2024518111A/ja active Pending
  • 2022-05-17 EP EP22730114.0A patent/EP4342031B1/de active Active
  • 2022-05-17 PL PL22730114.0T patent/PL4342031T3/pl unknown
• 2023
  • 2023-11-17 US US18/512,159 patent/US20240088578A1/en active Pending

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