terminal block
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-21
- Publication Date
- 2026-08-07
Smart Images
Figure CN122532616A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a terminal block having a busbar, a clamping spring, and an insulating housing with a wire introduction channel. The clamping spring has clamping legs and functional legs. The functional legs have a support section for supporting the clamping spring on the busbar. The clamping legs and the busbar form a clamping portion for inserting an electrical wire into the terminal block via the wire introduction channel in a predetermined wire introduction direction. The clamping legs are movable between an open position and a closed position to open and close the clamping portion. The terminal block is configured to automatically move the clamping legs to the closed position when an electrical wire is inserted into the terminal block. Background Technology
[0002] Such terminal blocks are known in practice. This relates to a terminal block that automatically connects a wire to be clamped when it is introduced into the terminal block. For this purpose, the terminal block can be configured to temporarily hold the clamping legs of the clamping spring in an open position. By introducing the wire into the terminal block, the clamping legs held in the open position are automatically released by a release mechanism, resulting in a secure clamping of the wire in the closed position. Thus, wires can be connected simply and comfortably using this terminal block, which is also known in practice as a force-free terminal block.
[0003] Given the versatility of these terminal blocks, especially in confined installation environments, and considering the pursuit of optimized manufacturing, it is worthwhile to design them as compactly as possible with the fewest possible components. Summary of the Invention
[0004] In this context, the objective of this invention is to provide an improved terminal block that provides reliable automatic wire connection within a compact construction.
[0005] The objective is achieved by means of a terminal block having the features of the present invention. Advantageous embodiments are described in the specification and drawings.
[0006] The present invention proposes that the functional leg has a holding section for holding the clamping leg in an open position and a releasing section for releasing the clamping leg held in the open position, and a busbar at least partially enclosing a through region through which the clamping leg of the clamping spring and the functional leg are guided, and an electrical conductor can be guided through the through region toward the releasing section in the open position of the clamping leg.
[0007] In short, the busbar can be a through-opening area to realize a gantry with mechanical support and guidance functions for clamping springs and electrical wires, wherein the functional leg of the clamping spring undertakes the holding and releasing functions for holding and releasing the clamping leg.
[0008] The proposed terminal block is characterized by its particularly compact structure with a small number of components and its automatic wire connection that ensures reliable operation. Here, components that would normally be used for connecting electrical wires, such as clamping springs and busbars, are structurally matched so that automatic connection is achieved without the need for additional components. This keeps the structural space required for the terminal block components small, and the terminal block remains compact overall. Through the through-area of the busbar for holding and guiding the clamping springs and electrical wires, the dimensions of the busbar and clamping springs, especially in the extension direction along the wire introduction direction, are significantly reduced compared to similar known wire connection schemes. This is particularly achieved when the through-area is configured as a notch forming a through-opening in the busbar.
[0009] The terminal block housing, for example, is made of plastic and is insulated to house the busbar and clamping spring, i.e., the spring contact connection element of the terminal block, and to protect the spring contact connection element from environmental influences and contact.
[0010] The wire introduction channel can be formed as an insertion channel, for example, at least partially cylindrical or funnel-shaped, leading to the clamping portion of the terminal block, in which the end portion of the wire can be inserted into the insulating material housing along a predetermined wire introduction direction and can be removed from the insulating material housing in the opposite direction of the wire introduction direction.
[0011] Buses, also known as contacts or current strips, can be substantially rigid electrical conductors, formed, for example, by means of metal strips. Buses may have multiple bends or curves for a compact implementation or to form a functional section. Buses may have clamping edges or clamping faces against which electrical wires introduced into the terminals can be clamped.
[0012] The clamping spring of the terminal block can be a spring-loaded, primarily planar component. The clamping spring has functional legs with a support section for supporting the clamping spring on the busbar and clamping legs for clamping the wire to the busbar.
[0013] A spring bow for redirecting the clamping spring can be provided between the functional leg and the clamping leg. By clamping the wire onto the busbar via the clamping edge and the spring force of the clamping spring, the clamping leg forms a clamping portion at the clamping surface of the busbar by means of the defined clamping edge, allowing reliable electrical contact to be established. The clamping leg can be moved between an open position and a closed position to open and close the clamping portion. In the open position, the clamping edge of the clamping leg is spaced apart from the busbar and, if necessary, the introduced wire, so that the clamping portion is released and the wire can be introduced into the terminal block and positioned in or removed from the area of the clamping portion. In the closed position, the clamping edge is moved onto the busbar and the introduced wire and applies pressure toward the busbar and the wire, thus establishing electrical contact between the wire and the busbar.
[0014] To achieve automated wire connection, the terminal block is configured to automatically move the clamping legs from a held open position to a closed position when an electrical wire is introduced into the terminal block. For this purpose, the terminal block particularly has a release mechanism that can be actuated by the introduced wire and via which the clamping legs can be released from their held open position, allowing the clamping legs to move automatically to the closed position by spring force. The clamping legs can be manually reset so that after being moved to the closed position, they can be manually moved back to the open position. Manual operation can here refer to non-automatic operation by means of a separate operating tool and / or by means of the terminal block's operating elements.
[0015] According to the invention, the functional leg has a retaining section for holding the clamping leg in an open position and a releasing section for releasing the clamping leg held in the open position. The supporting section, retaining section, and releasing section can form an integral functional area of the functional leg. The retaining section can be configured to mechanically interact with the clamping leg and to position and orient it such that temporary fixation of the clamping leg at the retaining section is accompanied by retention of the clamping leg in its open position, i.e., ensuring sufficient space for introducing the electrical conductor. The releasing section can be designed such that mechanical contact of the releasing section through the introduced electrical conductor causes displacement of the functional leg, which in turn causes release of the mechanical interaction between the retaining section and the clamping leg.
[0016] The busbar has a through-area through which the clamping legs and functional legs of the clamping spring pass, and the conductor can be guided through the through-area toward the release section in the open position of the clamping legs. Therefore, the busbar can be segmentally formed into a busbar frame, which defines the through-area and on which the clamping legs and functional legs of the clamping spring can be supported. The busbar frame can extend in a main extension plane that extends substantially perpendicular to the conductor introduction direction. The conductor, guided through the through-opening, is reliably guided toward the release section through the busbar frame. Furthermore, the busbar frame can have a clamping surface defining the through-area, where a clamping portion can be formed with the clamping edge of the clamping legs. In other words, the conductor can be clamped by the clamping legs abutting against the frame section of the busbar frame.
[0017] The busbar may have a fixing element in the fixed section of the clearance passage area for securing the support section of the functional leg to the busbar. This reliably mechanically secures the clamping spring to the busbar and reliably prevents movement along the wire introduction direction, for example, by means of electrical wires introduced into or pulled out of the terminals. The arrangement of the fixing section in the passage area meaningfully complements the holding and guiding function of the clamping spring, achieved by the portal busbar frame, with a stable fixing function.
[0018] The fixing element can mechanically cooperate with the support section, such that at least one degree of freedom of the support section is locked in the region. For example, the fixing element can be force-fitted and / or form-fitted against or surround the support section. The fixing element is particularly integral with the busbar and can, for example, protrude from the busbar frame.
[0019] The fixing element can be a fixing protrusion that engages with a recess in the support section. This ensures that the functional leg is reliably held at the busbar while reliably restricting its degree of freedom. Furthermore, when assembling the terminal blocks, it is easy to create engagement between the fixing protrusion and the corresponding recess in the support section.
[0020] The fixed protrusion and the void can be coordinated and sized so that the walls of the fixed protrusion and the boundary void of the functional leg are laterally abutted against each other, so as to minimize the gap of the fixed protrusion in the void.
[0021] The fixing protrusion can be configured as a material tongue bent out from the manifold. The opening can be configured as a through hole and, for example, can be shaped as a square window opening. The fixing protrusion can extend into the opening of the support section from the side of the functional leg away from the clamping leg or extend through the opening.
[0022] The clamping portion can be formed by a lateral tab in the limiting through-region of the busbar and the clamping edge of the clamping leg. Electrical wires guided through the through-region can be reliably and securely clamped to the busbar in this manner. Furthermore, this achieves a compact wire connection mechanism. The lateral tab can be formed by a frame section of the busbar frame. If the busbar has a fixed section with a limiting through-region containing a fixing element, the lateral tab can extend in the through-region, such as at the edge opposite the fixed section, particularly at the through-opening.
[0023] The retaining and releasing sections can extend at an angle relative to the direction of wire introduction, particularly substantially vertically, and are spaced apart from each other by a connecting section. In other words, when the direction of wire introduction is horizontally oriented, the retaining and releasing sections can extend substantially vertically within the terminal block. This advantageously orients the retaining section to reliably hold the clamping leg in the open position. Due to the vertical orientation, the releasing section has a large impact surface that can be reliably struck by the end of the introduced electrical wire and easily displaced. The retaining and releasing sections can be connected to each other by a horizontal connecting section in the horizontally oriented direction of wire introduction. Starting from the spring bow, the functional leg can successively have a supporting section, a retaining section, a connecting section, and a releasing section. The releasing section can end at the free end of the functional leg.
[0024] The retaining section may have a retaining profile configured to cooperate with a mating profile of the clamping leg to hold the clamping leg in the open position. This allows for a simple and defined retaining function at the retaining section. The interaction between the retaining profile and the mating profile can be understood as a mechanical interaction, wherein the retaining profile and the mating profile may, for example, engage, support, and / or lock with each other. Here, this interaction is designed such that the retaining profile and the mating profile can move relative to each other with at least one degree of freedom, such that the interaction can be easily released by introducing an electrical conductor that allows the functional leg to be at least partially displaced on the releasing section.
[0025] The retaining profile can be configured as a stepped shoulder of the functional leg. The retaining profile at the functional leg can therefore have a profile that retracts relative to the outer profile of the retaining section. At this stepped configuration, the mating profile of the clamping leg can reliably overcome the spring force exerted by the clamping spring on the clamping leg to provide support and retention.
[0026] The mating profile can be configured as a retaining plate bent out from the clamping leg. This allows for a simple and efficient formation of the mating profile, requiring minimal structural space and easily achievable in manufacturing. The retaining plate can be cut from the clamping leg and bent toward the retaining section of the functional leg.
[0027] The release section may have an impact surface pointing towards the penetration area and is configured to shift when the conductor end strikes the impact surface, releasing the clamping legs held in the holding section in the open position. The release section can particularly shift between a holding position and a release position. In the holding position of the release section, the clamping legs and the holding section are held together, while in the release position, the mechanical interaction between the clamping legs and the holding section is released, and the clamping legs automatically shift to their closed position. The release section may be tilted towards the conductor entry channel in the holding position, allowing it to easily shift to the release position when the conductor end touches the release section.
[0028] The terminal block may have an actuating element for returning the clamping leg to the open position. The actuating element allows the clamping leg to be comfortably returned to its open position. According to an embodiment, the actuating element may be a translational actuating element, such as a pressing element, or a rotational actuating element, such as a pivot rod.
[0029] The actuating element may have an operating section that is accessible from the outside. The operating section may have a tool housing for easy operation. The operating section may extend to different degrees from the insulating housing and / or move along the insulating housing to different positions depending on the position of the actuating element, such that it is identifiable whether the clamping leg is in an open or closed position based on the operating section.
[0030] The actuating element can be configured as a pressing member. This provides a compact actuating mechanism with a direct actuating stroke. Here, the pressing member is the actuating element with primarily translational movement. The pressing position relative to the insulating housing can be used as an identification feature to determine whether the clamping leg is in the open or closed position.
[0031] The actuating element can be configured as a fork-shaped pressing member. This allows for the introduction of a high and evenly distributed restoring force into the clamping legs with minimal structural space requirements. The fork-shaped pressing member can have two parallel, spaced-apart pressing legs extending from the operating section. Electrical leads can be guided between the pressing legs to the clamping portion or can be displaced from the clamping portion. The pressing legs can be positioned on both sides, passing alongside the leads, towards the clamping legs and moving together with them.
[0032] The clamping leg can have an operating surface extending laterally from the clamping leg. This allows for the targeted provision of a force-applying surface for moving the clamping leg into the open position. Lateral positioning of the operating surface facilitates easier movement of the clamping leg. The operating surface can be a widened portion of a localized limit of the clamping leg, resulting in material savings relative to an overall widened clamping spring. The operating surface can be, for example, located at a laterally extending tab or a laterally extending plate. The clamping leg can particularly have two operating surfaces extending from opposite sides of the clamping leg, enabling uniform force application.
[0033] The busbar can extend in sections parallel to the support sections, retaining sections, and / or connecting sections of the functional leg. A compact implementation can be achieved by aligning the busbar parallel to the sections of the functional leg.
[0034] The busbar can be segmented with a curvature consistent with that of the functional legs. This further saves space, which helps in the compact implementation of the terminal blocks. As previously mentioned, the functional legs can be bent or folded multiple times to, for example, achieve vertical holding and / or releasing sections together with horizontal connecting sections extending therebetween. The curvature of the busbar can match this variation between vertical and horizontal sections. The curvature of the busbar can, for example, be S-shaped. A segment of the busbar having a curvature consistent with that of the functional legs can, for example, be a solid segment constructed solidly relative to the busbar frame, which can in particular be connected to the fixed section of the busbar.
[0035] Alternatively, the busbar may have a base plate, sidewalls extending from the base plate, and transverse tabs extending from the sidewalls opposite the base plate, wherein the through area is defined by the sidewalls and the transverse tabs and can be partially open laterally. This forms a through channel in which electrical conductors can be guided through the busbar to the impact surface.
[0036] The fixing element can extend from the base plate toward the lateral connector.
[0037] Generally speaking, within the scope of this application, the word “one” should not be understood as a numeral unless otherwise explicitly defined, but rather as an indefinite article meaning “at least one”. Attached Figure Description
[0038] The invention will now be described in more detail with reference to the accompanying drawings and embodiments. The drawings are shown schematically:
[0039] Figure 1 A side view shows a wiring terminal with an open clamping portion according to an embodiment, with the insulating material housing concealed.
[0040] Figure 2 Show Figure 1The terminal block shown has a closed clamping portion;
[0041] Figure 3 Show Figure 1 A perspective view of the wiring terminals with an open clamping portion shown in the figure;
[0042] Figure 4 Shown with the control elements concealed. Figure 3 The wiring terminals shown in the image;
[0043] Figure 5 The basis shown in the open position Figures 1 to 4 A separate perspective view of the clamping spring of the terminal block;
[0044] Figure 6 Showing according to Figures 1 to 4 A separate 3D view of the busbar for the terminal blocks;
[0045] Figure 7 Showing according to Figures 1 to 3 A separate perspective view of the control element of the wiring terminal;
[0046] Figure 8 A side view shows a wiring terminal with an open clamping portion according to another embodiment, with the housing concealed by insulating material.
[0047] Figure 9 Shown in side sectional view Figure 8 The terminal block shown has a closed clamping portion;
[0048] Figure 10 Show Figure 8 A perspective view of the wiring terminals with an open clamping portion shown in the figure;
[0049] Figure 11 Shown with the control elements concealed. Figure 10 The wiring terminals shown in the image;
[0050] Figure 12 Showing according to Figures 8 to 11 A separate 3D view of the busbar for the terminal blocks. Detailed Implementation
[0051] Figure 1 and Figure 2 A terminal block 1 with automatic wire connection is shown according to one embodiment. Here, the terminal block 1 is shown having both open and closed clamping portions 7. Further details of the embodiment can be supplemented from... Figure 3 and Figure 4 A perspective view of terminal block 1 and Figures 5 to 7The clamping spring 3, busbar 2, and operating element 20 are shown in individual diagrams.
[0052] Terminal 1 has an insulating housing (not shown in detail), which includes a wire introduction channel, a busbar 2, and a clamping spring 3. The clamping spring 3 has a clamping leg 4 and a functional leg 5, which are connected to each other via a spring bow 23. The functional leg 5 has a support section 6 for supporting the clamping spring 3 on the busbar 2. The clamping leg 4, together with the busbar 2, forms a clamping portion 7 for a wire (not shown in detail in the figures) that can be introduced into the terminal 1 through the wire introduction channel along a predetermined wire introduction direction L. The clamping leg 4 can... Figure 1 The open position O shown in the figure is... Figure 2 The clamping part 7 is moved between the closed positions S shown in the figure to open and close.
[0053] Terminal 1 is configured to automatically move clamping leg 4 to the closed position S when an electrical conductor is introduced into terminal 1. For this purpose, functional leg 5 has a retaining section 8 for holding clamping leg 4 in the open position O and a releasing section 9 for releasing clamping leg 4 held in the open position O. Supporting section 6, retaining section 8, and releasing section 9 form integral components of functional leg 5. Retaining section 8 and releasing section 9 extend substantially perpendicular to the conductor introduction direction L and are spaced apart from and connected to each other by a substantially horizontal connecting section 16. Retaining section 8 has a retaining profile 17 configured as a stepped shoulder of functional leg 5, which is configured to mechanically cooperate with mating profile 18 of clamping leg 4 to hold clamping leg 4 in the open position O. Mating profile 18 is configured as a retaining plate cut out and bent from clamping leg 4. The release section 9 has an impact surface 19 pointing towards the through area 10 and is configured to be displaced when the end of the wire introduced into the terminal 1 strikes the impact surface 19. This displacement releases the mechanical interaction between the retaining profile 17 and the mating profile 18 and releases the clamping leg 4 for automatic, spring-force-induced displacement to the closed position S.
[0054] Busbar 2 has, in particular, Figure 3 and Figure 4A through-region 10, visible in the form of a through opening, through which the clamping leg 4 and functional leg 5 of the clamping spring 3 pass, and in the open position O of the clamping leg 4, the conductor can pass through the through-region and be guided toward the release section 9, thereby achieving a compact conductor connection mechanism. The busbar 2 can perform the function of holding and guiding the clamping spring 3 and the conductor in the area of the through-region 10, enabling reliable automatic conductor connection establishment. The clamping portion 7 is formed by the transverse tab 14 of the busbar 2 defining the through-region 10 and the clamping edge 15 of the clamping leg 4, enabling the conductor connection to be established in a defined manner. The transverse tab 14 can have a clamping surface defining the through-region 10, against which the conductor can be clamped. In the open position O of the clamping leg 4, the clamping edge 15, as in... Figure 1 As can be seen, it is spaced apart from the transverse connecting piece 14, and in the closed position S of the clamping leg 4, the clamping edge 15 is as shown in Figure 2 As can be seen in the image, it is moved toward the lateral patch 14.
[0055] For example in Figure 1 and Figure 2 As can be seen, the busbar 2 has a fixing element 12 integrally formed with the busbar 2 in the fixing section 11 of the limiting through region 10, for fixing the support section 6 of the functional leg 5 to the busbar 2. As shown, the fixing element 12 can optionally be configured as a fixing protrusion, which engages in the recess 13 of the support section 6. With the help of the fixing element 12, the functional leg 5 can be fixed to the busbar 2 and prevent unintentional displacement at least along the wire introduction direction L. The width of the functional leg 5 can be matched with the width of the through region 10, thereby providing another mechanism for preventing lateral displacement of the clamping spring 3 perpendicular to the wire introduction direction L.
[0056] For example in Figures 1 to 3 As can be seen, terminal 1 has an operating element 20 for comfortably and manually returning the clamping leg 4 to the open position O. The operating element 20 can be configured as a translationally movable pressing member, as shown, and in this case, as a fork-shaped pressing member. However, other motion mechanisms are also possible. The fork-shaped pressing member allows for the introduction of a high and evenly distributed returning force into the clamping leg 4 within a small structural space requirement. The fork-shaped pressing member has two... Figure 7 The pressing leg 26 is shown in the image. Figure 3 and Figure 4As can be seen, the clamping leg 4 has two opposing operating surfaces 21, which extend laterally from the clamping leg 4 and are configured as laterally extending material receiving plates. The operating surfaces 21 serve as mechanical contact surfaces, allowing the clamping leg 4 to be moved to its open position O by applying force through the pressing leg 26. The position of the fork-shaped pressing member relative to the insulating material housing indicates whether the clamping leg is in the open position O or the closed position S.
[0057] In addition Figure 1 and Figure 2 As can be seen, the busbar 2 extends in sections parallel to the support section 6, holding section 8, and connecting section 16 of the functional leg 5. Here, the busbar 2 has an S-shaped curvature 22 that is segmentally consistent with the functional leg 5. As a result, the terminal block 1 can be optimized in terms of a compact implementation.
[0058] exist Figure 5 The design of the clamping spring 3 can be seen in detail. The clamping leg 4, shown in the open position O, extends from the spring bow 23 via a first section having a laterally extending operating surface 21, a second section having an outwardly protruding mating profile 18, and a third section having a clamping edge 15, until its free end. On the other side of the spring bow 23, the functional leg 5 extends from the spring bow via a support section 6, a holding section 8 and a holding profile 17 provided at the holding section, a connecting section 16, and a releasing section 9, until its free end. The support section has a recess 13 for accommodating a busbar fixing element 12, and the releasing section has an impact surface 19 facing the wire introduction channel.
[0059] exist Figure 6 An exemplary design of the busbar 2 can be seen in detail below. It can be seen that the through area 10 of the busbar 2 is limited by the surrounding busbar frame 24. The busbar frame 24 extends substantially perpendicular to the wire introduction direction L. The busbar frame 24 enables targeted guidance of the wire towards the release section 9 of the clamping spring 3. The portion of the busbar frame 24 that is disposed opposite to the fixing section 11 forms a transverse tab 14, which is used to form a clamping portion 7 with the clamping leg 4. The fixing element 12, configured as a fixing protrusion, is as shown in... Figure 6 As can be seen, the material is implemented as a bent tongue and configured to be introduced from the side of the functional leg 5 away from the clamping leg 4 into its open portion 13. The solid section 28 of the busbar 2, which has an S-shaped curvature 22, can be connected at the busbar frame 24.
[0060] exist Figure 7The design of the operating element 20, which is configured as a fork-shaped pressing member, can be seen in detail. In addition to the pressing leg 26 already mentioned, the operating element also has an operating section 25, which has a tool receiving portion 27, for example, that mates with the tip of a screwdriver, for easy operation of the operating element 20.
[0061] With the aid of the described terminal block 1, a reliable and efficient wire connection is possible while maintaining a compact construction. Here, the terminal block 1 has a small number of components and correspondingly can be easily manufactured and assembled.
[0062] Figure 8 and Figure 9 Another embodiment of the terminal block 1 with automatic wire connection is shown. Here, the terminal block 1 is shown with both open and closed clamping portions 7. Further details of the embodiment can be supplemented from... Figure 10 and Figure 11 The terminal block 1 and the busbar 2 are shown in a perspective view and a single drawing, respectively. The clamping spring 3 and the operating element 20 correspond to the first embodiment, so that reference can be made, in particular, to the... Figure 5 and Figure 7 The explanation.
[0063] The busbar 2 has a base plate 29 from which a sidewall 30 bends. Opposite to the base plate 29, the sidewall 30 transitions into a transverse tab 14 after bending. The transverse tab may also have a bend at an end away from the sidewall 30, the bend terminating in a short sidewall segment 31. Thus, the through area 10 is defined by the base plate, the sidewall 30, and the transverse tab 14, and optionally additionally by the short sidewall segment 31.
[0064] Unlike the first embodiment where the through region 10 is formed as a notch in the plane of the busbar 2, the front edge of the sidewall 30 and the transverse tab 14 encloses the through region to form a partially laterally open through channel bounded by the sidewall 30 and the transverse tab 14.
[0065] The clamping spring 3 extends into the through area 10 with its clamping leg 4 and functional leg 5. The functional leg 5 is located on the base plate 29 and is fixed by means of the fixing element 12 extending from the base plate 29 toward the transverse tab 14.
[0066] The clamping portion 7 is formed between the lower side of the transverse connecting piece 14 and the clamping edge 15 of the clamping leg 4. This is especially evident from... Figure 9 This can be seen in the closed position S.
[0067] The transverse connector 14 may have a central notch as shown in the figure, such that a first transverse section and a second transverse section spaced apart therefrom are provided in the through area 10, i.e., in the through channel, along the direction L of the wire introduction.
[0068] Figure 10 Shown in Figure 8 The figure shows a perspective view of the terminal block 1 with an open clamping portion. It can be seen that the clamping leg 4 is locked at the retaining profile 17 of the connecting section 16 by its mating profile 18. It is also evident that the clamping leg 4 has operating surfaces 21 extending on both sides, which can be loaded by the operating element 20.
[0069] Depend on Figure 11 and Figure 12 The most obvious feature is the snap-fit bend shape of busbar 2. It can be seen that the retaining element 12 is cut out from the base plate 29 in the form of a retaining finger and extends toward the transverse tab 14. The sidewall 30 is integrally formed with the base plate 29 and extends laterally from the plane of the base plate 29 with a 90° bend. The sidewall 30 connects to the side edge of the base plate 29. The end of the sidewall 30 opposite to the base plate 29 also has a 90° bend, which transitions into the transverse tab 14 with a notch. The notch is optional. However, the notch is advantageous so as to clamp the wire to the side edge of the transverse tab 14 located at the front in the wire insertion direction L, which connects to the notch. This concentrates the force of the clamping spring 3 onto the contact edge and increases the pressure per unit area.
[0070] To guide the electrical conductor, the sidewall may extend further beyond the transverse tab 14, at least in the upper region adjacent to the transverse tab 14, in the conductor insertion direction L. This forms a guide wall for the electrical conductor facing the impact surface.
[0071] List of reference numerals
[0072] 1. Terminal block
[0073] 2 busbars
[0074] 3. Clamping spring
[0075] 4. Clasp your legs together
[0076] 5 Functional Legs
[0077] 6 Support Section
[0078] 7. Clamping parts
[0079] 8. Maintain section
[0080] 9. Loosen the section
[0081] 10 Connecting Areas
[0082] 11 Fixed Sections
[0083] 12 Fixing elements
[0084] 13. Empty space
[0085] 14. Lateral splicing
[0086] 15. Clamp the edges
[0087] 16 Connecting Sections
[0088] 17. Maintain the outline
[0089] 18 Paired outlines
[0090] 19 Impact surface
[0091] 20 Control elements
[0092] 21 control surfaces
[0093] 22. Curve direction
[0094] 23 Spring Bow
[0095] 24 Busbar Frame
[0096] 25 Operating Section
[0097] 26. Leg press
[0098] 27 Tool Reception Section
[0099] 28 Solid sections
[0100] 29 Base Plate
[0101] 30 sidewalls
[0102] 31 Side wall section
[0103] L Wire insertion direction
[0104] O Open location
[0105] S Closed position
Claims
1. A terminal block (1) having a busbar (2), a clamping spring (3), and an insulating material housing with a wire introduction channel, wherein... - The clamping spring (3) has a clamping leg (4) and a functional leg (5), the functional leg having a support section (6) for supporting the clamping spring (3) on the busbar (2). - The clamping leg (4) and the busbar (2) form a clamping part (7), which is used to allow an electrical wire to be introduced into the terminal (1) through the wire introduction channel along a predetermined wire introduction direction (L). - The clamping leg (4) can be moved between an open position (O) and a closed position (S) to open and close the clamping part (7). - The terminal block (1) is configured to automatically move the clamping leg (4) into the closed position (S) when an electrical wire is introduced into the terminal block (1). Its features are, The functional leg (5) has a holding section (8) for holding the clamping leg (4) in the open position (O) and a releasing section (9) for releasing the clamping leg (4) held in the open position (O), and the busbar (2) forms a through region (10) through which the clamping leg (4) and the functional leg (5) pass, the through region (10) allowing electrical wires to pass through in the open position (O) of the clamping leg (4) and be guided toward the releasing section (9).
2. The terminal block (1) according to claim 1, characterized in that, The busbar (2) has a fixing element (12) in the fixing section (11) that defines the through area (10) for fixing the support section (6) of the functional leg (5) onto the busbar (2).
3. The terminal block (1) according to claim 2, characterized in that, The fixing element (12) is a fixing protrusion that engages with the empty portion (13) of the support section (6).
4. The terminal block (1) according to any one of the preceding claims, characterized in that, The clamping part (7) is formed by the transverse connecting piece (14) of the through area (10) defined by the busbar (2) and the clamping edge (15) of the clamping leg (4).
5. The terminal block (1) according to any one of the preceding claims, characterized in that, The retaining section (8) and the releasing section (9) extend at an angle, particularly substantially perpendicular, to the direction of wire introduction (L) and are spaced apart from each other by the connecting section (16).
6. The terminal block (1) according to any one of the preceding claims, characterized in that, The retaining section (8) has a retaining profile (17) configured to work in conjunction with the mating profile (18) of the clamping leg (4) to retain the clamping leg (4) in the open position (O).
7. The terminal block (1) according to claim 6, characterized in that, The retaining profile (17) is configured as a stepped shoulder of the functional leg (5).
8. The terminal block (1) according to claim 6 or 7, characterized in that, The mating profile (18) is configured as a retaining plate that bends out from the clamping leg (4).
9. The terminal block (1) according to any one of the preceding claims, characterized in that, The release section (9) has an impact surface (19) pointing toward the through area (10) and is configured to be displaced when the end of the conductor of the electrical conductor strikes the impact surface (19), and to release the clamping leg (4) held in the holding section (8) in the open position (O) by means of the displacement.
10. The terminal block (1) according to any one of the preceding claims, characterized in that, The terminal block (1) has an operating element (20) for resetting the clamping leg (4) to the open position (O).
11. The terminal block (1) according to claim 10, characterized in that, The operating element (20) is configured as a pressing element.
12. The terminal block (1) according to claim 11, characterized in that, The actuating element (20) is configured as a fork-shaped pressing element.
13. The terminal block (1) according to any one of claims 10 to 12, characterized in that, The clamping leg (4) has an operating surface (21) that extends laterally from the clamping leg (4).
14. The terminal block (1) according to any one of the preceding claims, characterized in that, The busbar (2) extends in sections parallel to the support section (6), the retaining section (8), and / or the connecting section (16).
15. The terminal block (1) according to any one of the preceding claims, characterized in that, The busbar (2) has a segmental curvature (22) consistent with that of the functional leg (5).
16. The terminal block (1) according to any one of claims 1 to 13, characterized in that, The busbar (2) has a base plate (29), a side wall (30) extending from the base plate, and a transverse tab (14) extending from the side wall (30) opposite to the base plate (29), wherein the through area (10) is defined by the side wall (30) and the transverse tab (14) and can be partially opened laterally.
17. The terminal block (1) according to claim 16, characterized in that, The fixing element (12) of the busbar (2) extends from the base plate (29) toward the transverse connector (14).