terminal block
Patent Information
- Application Number
- CN202610205987.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2025-02-20
- Filing Date
- 2026-02-12
- Publication Date
- 2026-08-21
Smart Images
Figure CN122620168A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a terminal block having a busbar, a clamping spring, and an insulating material housing with a wire introduction channel, wherein the clamping spring has a contact leg and a clamping leg, wherein the clamping leg and the busbar form a clamping portion for a wire that can be introduced into the terminal block through the wire introduction channel, wherein the clamping leg can be displaced between an open position and a closed position to open and close the clamping portion, and wherein the terminal block is configured to automatically displace the clamping leg to the closed position when a wire is introduced into the terminal block in a predetermined wire introduction direction. Background Technology
[0002] Such terminal blocks are known in practice. This relates to terminal blocks that automatically connect to a wire to be clamped when the wire is introduced into them. For this purpose, the terminal block can be configured, for example, to temporarily hold the clamping legs of a clamping spring in an open position. By introducing the wire into the terminal block, the clamping legs held in the open position can be automatically released, and clamping of the wire is caused in the closed position. Thus, a simple and comfortable connection of the wire can be achieved by means of the terminal block, a connection also known in practice as a non-clamped connection.
[0003] Regarding such terminal blocks, it is desirable that they be robustly designed while providing a sufficiently sensitive triggering mechanism to activate automatic wiring. In this context, there is a need for a terminal block that enables automatic wiring via a simple and reliably triggerable mechanism for connecting electrical wires. Summary of the Invention
[0004] The purpose of this invention is to provide an improved terminal block.
[0005] The objective is achieved by means of the terminal block according to claim 1. Advantageous embodiments are disclosed in the dependent claims.
[0006] This invention proposes a retaining element in a terminal block. The retaining element has a retaining profile that interacts with a mating profile of a clamping leg to hold the clamping leg in an open position, and has a release section facing a wire introduction channel. The retaining element is configured to shift from a retaining position to a release position when the insulating sleeve of an electrical wire introduced into the terminal block collides with the release section, thereby canceling the interaction between the retaining profile and the mating profile and allowing the clamping leg to automatically shift to its closed position.
[0007] This provides a robust and sufficiently sensitive triggering mechanism for activating automatic wiring, which, on the one hand, allows for simple, reliable, and effective mechanical triggering of the clamping leg release using an insulating sleeve on the electrical wire introduced into the terminal block; and on the other hand, provides a retaining structure that precisely coordinates with the mechanical components of the wire to be clamped and the terminal block using a retaining element specifically designed for the triggering mechanism. By triggering the release of the clamping leg with the insulating sleeve of the introduced electrical wire, even thin wires can be automatically connected via the terminal block, since the cross-sectional area and flexibility of the uninsulated wire end are essentially irrelevant to the mechanical triggering of the clamping leg release.
[0008] Therefore, improved terminal blocks provide a reliable and effective way to connect and trigger electrical wires, regardless of the wire material characteristics.
[0009] The terminal block has an insulating housing, for example made of plastic, that houses the terminal block bus and clamping spring, and protects it from environmental influences and contact. A wire entry 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 this insertion channel, the end portion of the wire can be inserted into the insulating housing in a predetermined wire entry direction and removed from the insulating housing in the opposite direction. The bus, also known as a contact or current bar, can be a substantially rigid electrical conductor, formed, for example, by a metal strip. The bus can have a clamping surface against which the wire introduced into the terminal block can be clamped, and the bus can have a contact surface opposite the clamping surface, on which the contact leg of the clamping spring can be supported.
[0010] The clamping spring of the terminal block can be a spring-loaded, predominantly planar component. The clamping spring has a contact leg for supporting the clamping spring against an adjacent structure, such as a busbar or insulating housing, and a clamping leg for clamping the wire to the busbar. At least one spring bow for deflecting the clamping spring can be provided between the contact section and the clamping leg. The clamping leg can form a clamping portion with the busbar by means of defined clamping edges for clamping the electrical wire to the busbar in such a way that the wire is clamped to the busbar by means of the spring force of the clamping spring through the clamping edges, thereby establishing a reliable electrical contact. The clamping leg can be displaced between an open position and a closed position to open and close the clamping portion. In the open position of the clamping leg, the clamping edges of the clamping leg are spaced apart from the busbar and, if necessary, the electrical wire introduced, such that the clamping portion is released and the wire can be introduced into the terminal block and can be positioned in or removed from the area of the clamping portion. In the closed position of the clamping legs, the clamping edge shifts toward the busbar and the introduced electrical wire and applies pressure toward the busbar to the electrical wire, so that there is electrical contact between the wire and the busbar.
[0011] To enable automated wiring, 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 has a trigger mechanism that can be actuated by the introduced wire and via the trigger mechanism, the clamping legs can be released from their held open position, allowing them to move automatically to the closed position by spring force.
[0012] The terminal block may have a retaining element with a retaining profile for interacting with a mating profile of the clamping leg to hold the clamping leg in the open position. The retaining element may be configured as a separate element, an additional structural element besides the bus and clamping spring. In principle, embodiments in which the retaining element is integrally formed with the actuating element of the bus, clamping spring, or terminal block are not excluded. 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 are movable relative to each other with at least one degree of freedom, such that this interaction can be canceled in a simple manner by means of an introduced electrical conductor through displacement of the retaining profile and / or the mating profile.
[0013] The retaining element may have a release section facing the wire introduction channel and be configured to, when the insulating sleeve of the wire introduced into the terminal block encounters the release section, shift from a retaining position to a releasing position, thereby canceling the interaction between the retaining profile and the mating profile and allowing the clamping legs to automatically shift to their closed position. The release section may, for example, have a striking surface or striking edge for transmitting force from the wire moving towards the clamping portion to the retaining element. The release section may have a frame-shaped support structure from which the striking surface extends. The release section may also have multiple striking surfaces, for example, extending from two, three, or four sides of the frame-shaped support structure of the retaining element. The release section may be positioned and oriented in the terminal block such that it is configured to mechanically contact the end face or sheath edge of the insulating sleeve of the introduced wire facing the clamping portion. By shifting the retaining element from the retaining position to the releasing position, the retaining profile can be released from engagement with the mating profile of the clamping leg, causing the clamping leg to move automatically to its closed position by spring force and clamp the introduced wire onto the bus.
[0014] The clamping leg can be manually reset so that it can be manually moved back to the open position after being moved to the closed position. Manual operation can be described herein as non-automatic operation achieved by means of an operating tool separate from the terminal block and / or by means of an operating element with respect to the terminal block.
[0015] The clamping spring can be configured as a cage-like tension spring with a through opening in the clamping legs, wherein the abutment leg and / or bus extends through the through opening. This clamping spring allows for compact terminal blocks. Furthermore, the wires guided through the through opening are surrounded by the clamping legs from multiple sides, allowing for targeted guidance to the clamping location. If the abutment leg is guided through the through opening of the clamping leg, the cage-like tension spring can be considered a clamping spring with a closed spring profile. The abutment leg and / or bus can extend segmentally through the through opening, with their respective free ends pointing towards the wire introduction channel. The wire to be connected can be guided through the through opening in the open position of the clamping leg and clamped against the bus by the clamping edge of the limiting through opening in the closed position of the clamping leg. The mating profile of the clamping legs can be configured at the frame segment of the limiting through opening of the clamping leg.
[0016] The retaining profile can be configured as a retaining tab extending substantially parallel to the busbar, at which the mating profile of the clamping leg can be supported on the side of the retaining tab facing the busbar to hold the clamping leg in the open position. This achieves a defined retaining position for the clamping leg, and the mating profile can reliably overcome the spring force of the clamping spring and be supported on the retaining profile. The retaining tab here requires only a small structural space, resulting in a compact retaining mechanism.
[0017] The retaining element can have a gap between the retaining profile and the releasing section, through which the clamping leg is guided. Thus, the releasing and retaining areas of the retaining element can be precisely separated from each other and positioned on different sides of the clamping leg. Furthermore, this enables guided displacement movement of the retaining element. When the engagement between the retaining profile and the mating profile is cancelled, the clamping leg can move relative to the retaining element via the gap and automatically shift to its closed position. The gap can be sized such that the clamping leg and the mating profile of the clamping leg, for example, a curved retaining tongue, can at least partially shift through the gap. The gap can be closed or open on one side. A one-sided open gap can be achieved through a U-shaped section design of the retaining element. The retaining profile can be formed by a leg of the U-shaped section. The other leg of the U-shaped section can form the aforementioned stop.
[0018] The retaining element may have a stop to limit its displacement. This stop may, for example, be formed between the retaining profile and the release section via a limiting interface of the retaining element's opening. The stop limits displacement of the retaining element caused by the conductor's insulation contacting the release section, thereby ensuring simple and reliable resetting of the retaining element via a terminal actuation element or a separate actuation tool. Here, the limiting interface or stop of the retaining element's opening contacts the clamping leg section during maximum displacement of the retaining element.
[0019] The retaining element can be translated. Specifically, the retaining element can be translated via a linear movement. This translational displacement can be supported by segmented guidance, such as the aforementioned opening in the retaining element and the clamping legs guided by the opening, or the guide surface of the insulating housing, which can pre-determine the movement path of the retaining element. Alternatively, the retaining element can also be rotatably displaced, for example, through a predetermined pivoting movement. It is also conceivable that the retaining element is configured to be displaced in a combination of translational and rotational movements.
[0020] The release section can be located on the side of the clamping leg facing the wire inlet channel, and the retaining profile can be located on the side of the clamping leg away from the wire inlet channel. For this purpose, the retaining element can, for example, have the aforementioned clearance between the retaining profile and the release section, through which the clamping leg is guided. The clamping leg can, for example, be surrounded by a U-shaped section as described above, with a first leg located on one side of the release section and a second leg located on one side of the retaining profile, wherein the second leg can directly form the retaining profile. With this arrangement, the pre-established mechanical contact of the release section can be achieved by the insulating sleeve of the electrical wire introduced into the terminal block at a position sufficiently spaced from the clamping portion, while the available free structural space on the side of the clamping leg away from the wire inlet channel can be effectively used to position the mating profiles of the retaining profile and the clamping leg.
[0021] The release section can have a collision surface inclined to the direction of the wire introduction. Thus, any wire that might collide with the release section can be guided along the collision surface, ensuring that displacement of the retaining element in the release position is not caused by collision with the insulation of the introduced wire. Furthermore, it prevents the wire core from fraying upon collision with the collision surface. The collision surface can, for example, be bent from a frame-shaped support structure to form a collision surface inclined to the direction of the wire introduction.
[0022] The mating profile can be configured as a retaining tongue that bends from the clamping leg toward the retaining profile. This allows for a simple and efficient formation of the mating profile, requiring minimal structural space and easily achievable in manufacturing. The retaining tongue can extend from the clamping leg and bends from the clamping leg on the side opposite to the wire inlet channel. The bent retaining tongue can, for example, point toward the spring bow of the clamping spring. If the clamping spring is configured as a cage-type tension spring as described above, the retaining tongue can be bent out from the frame section with the limiting through-opening of the clamping leg.
[0023] The terminal block may have a stop element to hold the retaining element in a holding position until the insulating sleeve of the lead wire introduced into the terminal block strikes the release section. This reliably prevents the retaining element from prematurely and accidentally shifting into the release position, for example, due to vibration or impact on the terminal block. The stop element applies a defined holding force to the retaining element. If the release force applied to the release section via the insulating sleeve of the lead wire exceeds the defined holding force of the stop element, then the retaining element is controlled to shift into the release position.
[0024] The stopping element can be configured as a stopping spring. This provides a stopping element with a simple design and reliable operation. Furthermore, the stopping spring can optionally be configured to return the retaining element to the retaining position. The stopping spring can, for example, be configured as a compression spring. The stopping spring can, for example, be anchored to an insulating housing and supported against the retaining element. Conversely, it is also conceivable that the stopping spring is anchored to the retaining element and supported against the insulating housing. In particular, it is conceivable that the stopping spring is fastened to the aforementioned frame-shaped support structure of the retaining element. Here, two or more stopping springs can also be fastened to the support structure, for example, to opposite sides of the support structure. The insulating housing can have a spring stop against which the stopping spring can be supported when the retaining element shifts. The stopping spring can have an S-shaped or Z-shaped profile. In order for the retaining element to shift to the release position, the retaining element must resist the spring stress movement of the stopping spring with sufficient release force. Here, the stop spring is compressed, for example, when it comes into contact with the spring stop, and can either reset the retaining element itself when the wire is removed from the terminal, or be stretched again when the retaining element is reset to the retaining position by the operating element of the terminal or by the operating tool.
[0025] The stop element can be formed as part of the release section and can have a collision surface. This achieves versatility of the stop element, contributing to an efficient and compact structure for the terminal block. For example, the end section of a stop spring with an S-shaped or Z-shaped profile can form a collision surface. The stop spring can, for example, be fastened to the aforementioned frame-shaped support structure, such that the collision surface is inclined to the direction of wire introduction.
[0026] The terminal block may have an actuating element for resetting the clamping leg to the open position and / or for resetting the retaining element to the retaining position. The actuating element allows the clamping leg to be comfortably reset to its open position. According to an embodiment, the actuating element may be a translationally movable actuating element, such as a pressing element, or a rotationally movable actuating element, such as a pivot rod. The actuating element may have an operating section accessible from the outside of the insulating housing. The operating section may have a tool receiving portion for simplified operation. The operating section may extend to different degrees from and / or shift along the insulating housing to different positions depending on the position of the actuating element, such that it is possible to identify whether the clamping leg is in the open or closed position and / or whether the retaining element is in the retaining or released position based on the operating section.
[0027] The actuating element can be configured as a pivot rod. This provides a comfortable actuating element with effective leverage. The pivot rod can pivot about a pivot axis extending through a force-transmitting section of the actuating element, wherein the force-transmitting section is configured to mechanically contact the clamping spring to return the clamping leg to its open position. Here, the force-transmitting section does not necessarily act directly on the clamping leg, but can, for example, be configured to contact and displace a connecting section that connects the clamping leg to the abutment leg, thereby causing an indirect return of the clamping leg.
[0028] The actuating element may have a first force transmission section for resetting the clamping leg and a second force transmission section for resetting the retaining element. This allows for advantageous resetting of the clamping leg to the open position and the retaining element to the retaining position using the same actuating element. The first force transmission section may be configured to mechanically contact the clamping spring to reset the clamping leg to its open position. The second force transmission section may be configured to mechanically contact the retaining element, particularly the retaining profile, to reset the retaining element. The second force transmission section may, for example, be configured to act on the retaining profile, which is configured as a retaining tab, and thereby introduce a resetting force into the retaining element.
[0029] The second force transmission section can be spaced apart from the first force transmission section via a connecting arm. The connecting arm can be an elongated functional arm of the actuating element, spanning the distance between the force application surface of the clamping spring for resetting the clamping leg and the force application surface of the retaining element for resetting the retaining element. If the actuating element is configured as a pivot, another pivot arm can be formed by means of the connecting arm, which rotates together with the pivot about its pivot axis and can cause the retaining element to shift into its retaining position upon mechanical contact with it.
[0030] The actuating element can be shifted along a first actuating path to reset the clamping leg, and can be shifted along a second actuating path immediately following the first actuating path to reset the retaining element. Thus, the reset of the clamping leg and the retaining element can be performed sequentially in time, thereby requiring less force to operate the actuating element and achieving comfortable operation of the terminal block. If the actuating element is configured as a pivot, the pivot can, for example, pivot a first pivot angle to reset the clamping leg and pivot a subsequent second pivot angle to reset the retaining element.
[0031] In general, within the scope of this application, unless otherwise expressly defined, the word “one” should not be understood as a numeral, but rather as an indefinite article having the meaning of “at least one”. Attached Figure Description
[0032] This invention allows for different implementations, which are described in detail below with reference to the embodiments and accompanying drawings. The drawings show:
[0033] Figure 1 The wiring terminals are shown in a sectional side view;
[0034] Figure 2 Shown in a three-dimensional side view Figure 1 The wiring terminals shown have a concealed busbar.
[0035] Figure 3 Shown in a three-dimensional side view Figure 1 The wiring terminals shown have a concealed insulating material housing;
[0036] Figure 4 Shown in a three-dimensional side view Figure 1 A separate diagram of the clamping spring of the terminal block shown;
[0037] Figure 5 Shown in a three-dimensional side view Figure 1 A separate diagram of the retaining element of the terminal block shown;
[0038] Figure 6 Shown in a sectional side view Figure 1 The wiring terminals shown have a concealed insulating housing and an open clamping section;
[0039] Figure 7 Show Figure 6 The terminal block shown has a closed clamping portion;
[0040] Figure 8 Show Figure 6 The wiring terminals shown are those used during the reset of the clamping leg of the clamping spring.
[0041] Figure 9 Show Figure 6 The terminal shown is used during the holding element reset period. Detailed Implementation
[0042] Figures 1 to 9 A terminal block 1 with automatic wiring is shown according to one embodiment. Figure 1 and Figure 2 A terminal block 1 with an insulating housing 17 having a wire introduction channel 26 is shown. Figure 3 In the middle, the insulating material shell 17 is hidden. Figure 4 and Figure 5 A separate diagram is shown of the clamping spring 3 and the retaining element 8 of the terminal block 1. Figures 6 to 9 The different states of terminal 1 are shown.
[0043] As in Figures 1 to 3As can be seen, terminal 1 has a busbar 2 and a clamping spring 3 configured as a cage-type tension spring. The clamping spring 3 has a contact leg 4 and a clamping leg 5, which are connected to each other via a connecting section 28 by means of a first spring bow 24 and a second spring bow 25. The clamping leg 5 has... Figure 4 The through opening 12 is visible. The abutment leg 12 and busbar 2 extend through the through opening 12 in such a way that the abutment leg and busbar sectionally extend through the through opening 12. The clamping leg 5, together with the busbar 2, forms a clamping portion 6 for the electrical wire 7 that can be introduced into the terminal 1 through the wire introduction channel 26. The clamping leg 5 can... Figure 6 The open position O shown in the figure is... Figure 7 The closed positions S shown are shifted to open and close the clamping part 6.
[0044] As in Figure 1 As can be seen, the busbar 2 has a clamping surface 30 and a contact surface 29 opposite to the clamping surface 30, against which the conductor 7 can be clamped. When the clamping part 6 is closed, the limit of the clamping leg 5 passes through the opening 12. Figure 4 The clamping edge 31 shown is shifted toward the conductor 7 and busbar 2 so as to clamp the conductor 7 against the busbar 2 under spring force.
[0045] The terminal block 1 is configured to automatically move the clamping leg 5 to the closed position S when the electrical wire 7 is introduced into the terminal block 1 along a preset wire introduction direction L. Accordingly, automatic, force-free wiring can be achieved using the terminal block 1. Here, the clamping leg 5 is held in the open position O by a retaining mechanism until the introduced electrical wire 7 causes the clamping leg 5 to release.
[0046] For this purpose, a separately configured retaining element 8 is provided in the terminal 1. This retaining element has a retaining profile 9, which works in conjunction with a mating profile 10 of the clamping leg 5 to retain the clamping leg 5 in the open position O. The retaining profile 9 is configured, for example, as a retaining tab extending substantially parallel to the busbar 2. However, the orientation of the retaining tab can also be inclined to the adjacent plane of the busbar 2. The mating profile 10 of the retaining tongue, configured here to be curved from the clamping leg 5 toward the retaining profile 9, can be supported on the side of the retaining tab facing the busbar 2, so that... Figure 1 The clamping leg 5 is held in the open position O. Here, the retaining tongue bends from the frame section of the clamping leg 5 through the opening 12 toward the second spring bow 25.
[0047] Furthermore, the retaining element 8 has a release section 11 facing the wire introduction channel 26. The retaining element 8 is configured to release the wire from the insulating sleeve 7a of the conductor 7 when it impacts the release section 11. Figure 6 The holding position H shown is shifted to Figure 7 In the release position F shown, the interaction between the retaining profile 9 and the mating profile 10 is canceled, and the clamping leg 5 is automatically and spring-force-induced to move to its closed position S, thereby reliably clamping the conductor 7 onto the busbar 2.
[0048] By designing the terminal block 1 such that the release of the clamping leg 5 is triggered by the contact of the insulating sleeve 7a of the conductor 7 with the release section 11, a stable, reliable, and effective mechanical triggering can be achieved regardless of the conductor material characteristics of the conductor 7. Here, the retaining element 8 is structurally coordinated with the corresponding retaining and releasing mechanism, and optimized retaining and releasing functions are implemented to achieve automatic wiring.
[0049] The clamping leg 5 is guided through the opening 13 of the retaining element 8, the opening being formed between the retaining profile 9 and the release segment 11. This provides a compact embodiment with advantageous relative mobility of the clamping leg 5 relative to the retaining element 8. (As in...) Figure 3 and Figure 5 As can be seen, the open portion 13 is formed on one side and is designed with a U-shaped segment 33 for retaining the element 8. The retaining profile 9 is formed by the legs of the U-shaped segment 33. Furthermore, a stop 14 is formed by the other leg of the U-shaped segment 33 to limit the displacement of the open portion 13, so that the retaining element 8 can be easily and precisely reset from its released position F. According to the illustrated embodiment, the retaining element 8 is as shown in Figure 6 and Figure 7 It can be shifted horizontally as can be seen in the image.
[0050] As in Figure 1 and Figure 2 As can be seen, the release section 11 is located on the side of the clamping leg 5 facing the wire introduction channel 26, while the retaining profile 9 is located on the side of the clamping leg 5 away from the wire introduction channel 26. This advantageously utilizes the available structural space and achieves efficient triggering of the clamping leg release. (As shown in...) Figure 3 and Figure 5 As can be seen, the loosening section 11 has a frame-shaped load-bearing structure 32, which has multiple impact surfaces 15 extending from it for the insulating sleeve 7a. Furthermore, in Figure 3 and Figure 5 As can be seen, the release section 11 has a collision surface 15 that is inclined to the direction L of the conductor introduction, so that the conductor being collided is led out in a protected manner.
[0051] According to the illustrated embodiment, terminal 1 also has two stop elements 16 that constitute stop springs for securing the retaining element 8 in the retaining position H until the insulating sleeve 7a of the conductor 7 impacts the release section 11. The stop springs prevent premature accidental displacement of the retaining element 8, for example, due to vibration or impact. If the reaction force applied to the release section 11 via the insulating sleeve 7a exceeds the spring force of the stop spring, then the retaining element 8 shifts to the release position F. In principle, the stop springs can also be used to apply a restoring force to the retaining element 8 to shift the retaining element from the release position F to the retaining position H when the conductor 7 is removed. According to the illustrated embodiment, the stop springs are fastened to the opposite sides of the frame-shaped support structure 32 of the retaining element 8. The insulating housing 17 has... Figure 1 and Figure 2 The spring stop 34 shown in the diagram allows the stop spring to be supported against the spring stop when the retaining element 8 is displaced. The stop spring, as in... Figure 5 It has an S-shaped profile as can be seen in the middle. In addition, the stop spring forms part of the release section 11 and has a collision surface 15 formed by the end section with the S-shaped profile.
[0052] exist Figure 6 and Figure 7 In the diagram, the two different states of terminal 1 are compared with each other. Figure 6 As shown, the clamping leg 5 of the clamping spring 3 is in the open position O. The retaining element 8 is shown in the retaining position H. The diagram illustrates that the conductor 7 is introduced along the conductor introduction direction L, wherein the insulating sleeve 7a of the conductor 7 contacts the impact surface 15 of the release section 11. Thus, the retaining element 8 can be displaced to... Figure 7 In the release position F shown, the retaining profile 9 of the retaining element 8 disengages from the mating profile 10 of the clamping leg 5. Thus, the clamping leg 5 can automatically shift to the closed position S to clamp the wire 7 onto the busbar 2.
[0053] As in Figures 1 to 3 as well as Figures 6 to 9 As can be seen, terminal 1 according to the illustrated embodiment has an actuating element 18 for resetting the clamping leg 5 to the open position O and for resetting the retaining element 8 to the retaining position H.
[0054] exist Figure 8 and Figure 9The diagram illustrates the process of manipulating the actuating element 18 to reset the clamping leg 5 and the retaining element 8. According to the illustrated embodiment, the actuating element 18 is configured as a pivot rod capable of pivoting about a pivot axis 27. The actuating element 18 has a first force transmission section 19 for resetting the clamping leg 5 and a second force transmission section 20 for resetting the retaining element 8, wherein the second force transmission section 20 is spaced apart from the first force transmission section 19 via a connecting arm 21. Here, the first force transmission section 19 is configured to mechanically contact the connecting section 28 of the clamping spring 3, while the second force transmission section 20 is configured to mechanically contact the retaining profile 9 of the retaining element 8, which is configured as a retaining tab.
[0055] As in Figure 8 and Figure 9 As shown, the actuating element 18 can be displaced by a first pivot angle on the first actuating path 22 to reset the clamping leg 5, and the actuating element 18 can be displaced by a second pivot angle on the second actuating path 23 immediately following the first actuating path 22 to reset the retaining element 8. After the clamping leg 5 is reset to the open position O by displacing the actuating element 18 by the first pivot angle, the previously clamped wire 7 can be removed from the terminal 1 against the wire introduction direction L. Subsequently, the actuating element 18 can be displaced by the second pivot angle so as in Figure 9 The shown causes the holding element 8 to reset to the holding position H.
[0056] A robust yet sufficiently sensitive holding and releasing mechanism, utilizing terminal block 1, is provided for automated wiring. This also provides a reliable and efficient connection and triggering capability for thin wires.
[0057] List of reference numerals
[0058] 1. Terminal block
[0059] 2 busbars
[0060] 3. Clamping spring
[0061] 4. Lean against your legs
[0062] 5. Clasp your legs together
[0063] 6. Clamping parts
[0064] 7. Electrical wires
[0065] 7a Insulating sleeve
[0066] 8. Holding element
[0067] 9. Maintain the outline
[0068] 10 Paired Profiles
[0069] 11. Loosen the section
[0070] 12 Through openings
[0071] 13. Empty space
[0072] 14 Stop components
[0073] 15 Collision Surfaces
[0074] 16 Stopping elements
[0075] 17. Insulating material housing
[0076] 18. Control elements
[0077] 19 First Force Transmission Section
[0078] 20 Second force transmission section
[0079] 21 Connecting Arm
[0080] 22 First Manipulation Path
[0081] 23 Second Manipulation Path
[0082] 24 First Spring Bow
[0083] 25 Second Spring Bow
[0084] 26. Wire introduction channel
[0085] 27 Pivot axis
[0086] 28 Connecting Section
[0087] 29. Surface against
[0088] 30 Clamping surface
[0089] 31. Clamp the edges
[0090] 32 Load-bearing structure
[0091] 33 U-shaped section
[0092] 34 Spring stop
[0093] F Release Position
[0094] H Keep position
[0095] L-direction of wire introduction
[0096] O Open location
[0097] S Closed position
Claims
1. A terminal block (1) having a busbar (2), a clamping spring (3), and an insulating housing (17) with a wire introduction channel (26), wherein - The clamping spring (3) has a contact leg (4) and a clamping leg (5). - The clamping leg (5) and the busbar (2) form a clamping portion (6) for the electrical wire that can be introduced into the terminal (1) through the wire introduction channel (26) in the wire introduction direction (L). - The clamping leg (5) is movable between an open position (O) and a closed position (S) to open and close the clamping part (6). Its features are, A retaining element (8) is provided in the terminal (1), the retaining element having a retaining profile (9) for cooperating with the mating profile (10) of the clamping leg (5) to retain the clamping leg (5) in the open position (O), and the retaining element having a release section (11) toward the wire introduction channel (26), wherein the retaining element (8) is capable of shifting from the retaining position (H) to the release position (F) when the insulating sleeve of the electrical wire introduced into the terminal (1) collides with the release section (11), such that the cooperating action between the retaining profile (9) and the mating profile (10) is canceled and the clamping leg (5) can automatically shift to the closed position (S).
2. The terminal block (1) according to claim 1, characterized in that, The clamping spring (3) is configured as a cage-type tension spring having a through opening (12) in the clamping leg (5), wherein the abutment leg (4) and / or the busbar (2) extends through the through opening (12).
3. The terminal block (1) according to claim 1 or 2, characterized in that, The retaining profile (9) is configured as a retaining tab that extends substantially parallel to the busbar (2), at which the mating profile (10) is supported on the side of the retaining tab facing the busbar (2) in order to hold the clamping leg (5) in the open position (O).
4. The terminal block (1) according to any one of the preceding claims, characterized in that, The retaining element (8) has a gap (13) between the retaining profile (9) and the release segment (11), wherein the clamping leg (5) is guided through the gap (13).
5. The terminal block (1) according to any one of the preceding claims, characterized in that, The retaining element (8) has a stop (14) for limiting the displacement of the retaining element (8).
6. The terminal block (1) according to any one of the preceding claims, characterized in that, The retaining element (8) is capable of translational displacement.
7. The terminal block (1) according to any one of the preceding claims, characterized in that, The release section (11) is provided on the side of the clamping leg (5) facing the wire introduction channel (26), and the retaining profile (9) is provided on the side of the clamping leg (5) away from the wire introduction channel (26).
8. The terminal block (1) according to any one of the preceding claims, characterized in that, The release section (11) has a collision surface (15) that is inclined to the direction of the wire introduction (L).
9. The terminal block (1) according to any one of the preceding claims, characterized in that, The pairing profile (10) is configured as a retaining tongue that curves from the clamping leg (5) toward the retaining profile (9).
10. The terminal block (1) according to any one of the preceding claims, characterized in that, The terminal block (1) has a stop element (16) for fixing the retaining element (8) in the retaining position (H).
11. The terminal block (1) according to claim 10, characterized in that, The stop element (16) constitutes a stop spring.
12. The terminal block (1) according to claim 10 or 11, characterized in that, The stop element (16) forms part of the release section (11) and has a collision surface (15).
13. The terminal block (1) according to any one of the preceding claims, characterized in that, The terminal block (1) has an actuating element (18) for resetting the clamping leg (5) to the open position (O) and / or for resetting the retaining element (8) to the retaining position (H).
14. The terminal block (1) according to claim 13, characterized in that, The control element (18) is configured as a pivot.
15. The terminal block (1) according to claim 13 or 14, characterized in that, The operating element (18) has a first force transmission section (19) for resetting the clamping leg (5) and a second force transmission section (20) for resetting the retaining element (8).
16. The terminal block (1) according to claim 15, characterized in that, The second force transmission section (20) is spaced apart from the first force transmission section (19) via the connecting arm (21) of the operating element (18).
17. The terminal block (1) according to any one of claims 13 to 16, characterized in that, The actuating element (18) is capable of shifting the first actuating path (22) to reset the clamping leg (5), and is capable of shifting the second actuating path (23) immediately following the first actuating path (22) to reset the retaining element (8).