Wiring expansion type terminal block adaptive to multi-point industrial large terminal block

Abstract

The invention discloses a wiring expansion type terminal block adaptive to a multi-point industrial large terminal block, which comprises a terminal block body, and is characterized in that the terminal block body is provided with a plurality of movable signal output mobile ends and a plurality of signal input adjusting ends arranged along the transverse direction; the fan-shaped folding and unfolding control track is connected with the multiple signal input adjusting ends, the multiple vertical maintaining assemblies are connected between the signal output moving end and the corresponding signal input adjusting ends respectively, and the terminal block can conveniently achieve wiring space adjustment, signal on-off control and stable fixing of terminal wires. Therefore, the use convenience, the reliability and the maintenance efficiency of the terminal block are improved.

Description

Technical Field

[0001] This invention relates to the field of electrical connection equipment technology, and particularly to a wiring expansion terminal block adapted to multi-point industrial large terminal blocks. Background Technology

[0002] In industrial automation production and electrical equipment operation, terminal blocks, as key conductive connection components, play a crucial role in signal transmission and circuit continuity. Traditional terminal blocks typically have fixed signal input and output terminals with small spacing between terminals. This confined space during wiring, maintenance, or terminal wire replacement increases the risk of wiring errors or interference from adjacent lines. Furthermore, traditional terminal blocks lack convenient signal on / off control structures, requiring additional power disconnection or line disconnection during maintenance, impacting overall equipment operating efficiency. Additionally, the wiring fixation of traditional terminal blocks is poor; terminal wires are prone to detachment due to vibration or external pulling during long-term use, leading to signal transmission interruptions and affecting normal equipment operation.

[0003] In view of the shortcomings of the existing technology, there is an urgent need to design a terminal block with wiring expansion function, which can easily realize wiring space adjustment, signal on / off control and stable fixing of terminal wires, so as to improve the ease of use, reliability and maintenance efficiency of the terminal block.

[0004] Therefore, the existing technology of electrical connection equipment needs further improvement. Summary of the Invention

[0005] The purpose of this invention is to provide a wiring expansion terminal block that is compatible with multi-point industrial large terminal blocks, enabling convenient adjustment of wiring space, signal on / off control, and stable fixing of terminal wires, thereby improving the ease of use, reliability, and maintenance efficiency of the terminal block.

[0006] To achieve the above objectives, the present invention adopts the following solution:

[0007] A wiring expansion terminal block adapted to multi-point industrial large terminal blocks includes a terminal block body, on which multiple movable signal output terminals are disposed, and multiple signal input adjustment terminals arranged in a laterally direction; it also includes:

[0008] A fan-shaped retraction and extension control track is connected to multiple signal input adjustment terminals;

[0009] Multiple vertical holding components are respectively connected between the signal output moving end and a corresponding signal input adjusting end;

[0010] A separate signal conduction structure is disposed between the signal output moving end and a corresponding signal input adjustment end;

[0011] A self-locking assembly for locking the terminal wires is provided between two adjacent signal input adjustment terminals;

[0012] A synchronous upward movement component is disposed between multiple signal input adjustment terminals and is used to control the up and down movement of the multiple signal input adjustment terminals;

[0013] The cover opening drive assembly is mounted on the terminal block body and connected to the synchronous upward movement assembly.

[0014] Furthermore, multiple signal output movable ends are evenly distributed laterally along the terminal block body. Each signal output movable end includes a transverse guide shaft disposed inside the terminal block body and a signal output box. The signal output box is provided with a transverse guide hole and a signal output interface. The transverse guide hole is movably sleeved within the transverse guide shaft.

[0015] Furthermore, the signal input adjustment terminal includes a signal input box, on which multiple signal input terminals are provided;

[0016] The fan-shaped retraction and extension control track includes a drive shaft disposed on the rear wall of the signal input box. The rear wall of the terminal block body is provided with multiple drive guide grooves, and the drive shaft is movably installed in one of the drive guide grooves.

[0017] The drive guide groove includes a bottom vertical groove and an upper arc-shaped groove connected to the upper end of the bottom vertical groove. Multiple upper arc-shaped grooves are evenly distributed laterally and are inclined to both sides with the middle position of the terminal block body as the center. The upper arc-shaped grooves closer to the outer side of the terminal block body have a larger inclination angle.

[0018] Furthermore, the vertical holding assembly includes a vertical guide rod disposed at the rear end of the signal output box, and the signal input box is provided with a vertical guide hole, the vertical guide rod being movably inserted into a corresponding vertical guide hole.

[0019] Furthermore, the split signal conduction structure includes a first conductive contact metal component disposed at the bottom of the signal input box, and a second conductive contact metal component disposed on the upper surface of the signal output box, wherein the second conductive contact metal component can be electrically connected to a corresponding first conductive contact metal component.

[0020] Furthermore, the self-locking component includes a terminal wire, one end of which is provided with a wiring sleeve, which can be fitted onto a corresponding signal input terminal. A locking frame is provided on the upper surface of the signal input box, a locking tongue plate is provided on one side of the locking frame, and a locking tongue guide hole is provided on the other side. Multiple U-shaped slots are provided on the locking tongue plate, and a limit protrusion is provided on the lower edge of the wiring sleeve.

[0021] Furthermore, the synchronous upward moving component includes vertical guide grooves disposed on both sides of the terminal block body, vertical sliders are movably disposed in the vertical guide grooves, a synchronous drive rod is connected between two vertical sliders, a horizontal straight slot is disposed on the synchronous drive rod, and the tail parts of multiple drive shafts are respectively installed and movable in the horizontal straight slot.

[0022] Furthermore, the cover opening drive assembly includes a flip cover disposed on the terminal block body, a swing rod disposed at the rotating end of the flip cover, a control shaft disposed at the lower end of the swing rod, a drive crossbar disposed on the vertical slider, a transverse drive groove disposed on the drive crossbar, and the control shaft being movably installed in the transverse drive groove.

[0023] Furthermore, the flip cover is provided with a terminal wire entry slot, the terminal wire entry slot is provided with multiple guide wheel, and the flip cover and the terminal block body are provided with a locking nut structure.

[0024] Furthermore, the outer peripheral wall of the signal input terminal is provided with annular conductive protrusions, which are spaced apart along the axial direction of the signal input terminal, and a conductive groove is formed between two adjacent annular conductive protrusions; the inner wall of the terminal sleeve is provided with annular conductive ridges that are adapted to the conductive grooves.

[0025] In summary, the advantages of this invention over the prior art are:

[0026] This invention addresses the shortcomings of existing electrical connection equipment technology. Through its structural design, it offers the following advantages: Expandable wiring space: The opening and closing drive assembly drives the synchronous upward movement assembly, which, in conjunction with the fan-shaped expansion and contraction control rail, allows multiple signal input adjustment terminals to expand in a fan shape, simultaneously driving the signal output moving terminal to move laterally. This significantly expands the wiring operation space and avoids operational errors caused by congestion in traditional terminal blocks. Convenient signal on / off control: The separate signal conduction structure achieves signal on / off with the opening and closing of the signal input adjustment terminal and the signal output moving terminal, eliminating the need for additional power disconnection or wire disconnection during maintenance, improving maintenance efficiency and reducing safety risks. Stable terminal wire fixation: The self-locking assembly, through the cooperation of the locking tongue plate and U-shaped slot, combined with the multi-point conductive contact structure of the wiring sleeve and signal input terminal, ensures that the terminal wire is not easily detached and enhances conductive stability, preventing signal transmission interruption. Good structural synchronization: The vertical holding assembly and the synchronous upward movement assembly ensure the synchronous movement, expansion, and closure of the signal input adjustment terminal 3 and the signal output moving terminal, resulting in high control efficiency and avoiding structural jamming caused by the misalignment of a single component, thus improving the overall operational reliability of the terminal block. Attached Figure Description

[0027] Figure 1 Left view of the closed state of the first embodiment of the present invention

[0028] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0029] Figure 3 This is a left view of the unfolded state of the first embodiment of the present invention;

[0030] Figure 4 This is a front view of the first embodiment of the present invention;

[0031] Figure 5 This is one of the internal structural schematic diagrams of the first embodiment of the present invention;

[0032] Figure 6 For the present invention Figure 5 Enlarged view of a portion at point A;

[0033] Figure 7 This is a perspective view of the first embodiment of the present invention;

[0034] Figure 8 This is a second schematic diagram of the internal structure of the first embodiment of the present invention;

[0035] Figure 9 This is the third schematic diagram of the internal structure of the first embodiment of the present invention;

[0036] Figure 10 This is a rear view of the first embodiment of the present invention;

[0037] Figure 11 This is the fourth schematic diagram of the internal structure of the first embodiment of the present invention.

[0038] Figure 12 This is the wiring diagram for the signal terminals of the 32-point terminal block of the present invention;

[0039] Figure 13 This is the wiring diagram for the 16-point terminal block signal terminals of the present invention; Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1-10This invention provides a wiring expansion terminal block adapted to multi-point industrial large terminal blocks, including a terminal block body 1, on which multiple movable signal output moving ends 2 and multiple signal input adjusting ends 3 arranged in the lateral direction are provided; it also includes:

[0042] A fan-shaped expansion and contraction control track 4 is connected to multiple signal input adjustment terminals 3, which is used to adjust the multiple signal input adjustment terminals 3 to expand in a fan-shaped direction or merge with each other;

[0043] Multiple vertical holding components 5 are respectively connected between the signal output moving end 2 and a corresponding signal input adjusting end 3, for maintaining the signal input adjusting end 3 in a balanced movement during tilting and moving horizontally synchronously with the corresponding signal output moving end 2 below;

[0044] A separate signal conduction structure 6 is disposed between the signal output moving end 2 and a corresponding signal input adjusting end 3. When the signal output moving end 2 and the signal input adjusting end 3 are in an unfolded state, the separate signal conduction structure 6 disconnects the communication connection between them. When the signal output moving end 2 and the signal input adjusting end 3 are in a closed state, the separate signal conduction structure 6 connects the communication connection between them.

[0045] The terminal block body 1 is adapted to industrial-grade I / O signal transmission scenarios and has basic functions of signal input, signal output and power supply. The signal input and output support NPN / PNP type signal adaptation, and the power supply is adapted to DC 24V and 0V voltage specifications to meet the signal connection requirements of industrial automation equipment.

[0046] The signal terminals of a 32-point terminal block (such as SD-32IALR with 32 inputs and SD-32OBLR with 32 outputs) are divided into "16 points on one side + 16 points on the other side";

[0047] The 16-point terminal block is divided into "16 inputs (LD-1600NR)" and "16 outputs (LD-0016PR)", with a point layout of "8 points on one side + 8 points on the other side".

[0048] The signal types of the signal input adjustment terminal 3 and the signal output moving terminal 2 are: NPN / PNP (e.g., SD-32IBLR is PNP input, SD-32OALR is NPN output); signal level: 15V~30V (input), 0V (Max. 1.5V) / 24V (18~36V) (output); current specifications: single channel 5mA (input), Max. 1.0A / 1.2A (output), total load current 8A / 16A / 32A;

[0049] Terminal block body 1 protection rating: IP50 / 57; operating temperature: -30℃~+75℃, storage temperature: -40℃~+80℃;

[0050] The fan-shaped retraction control track (4) needs to be equipped with 32 or 16 sets of drive guide slots (402), which are evenly distributed horizontally along the terminal block housing (1), with an adjacent guide slot spacing of about 3.47mm; the upper arc-shaped slot (4022) is centered on the middle of the housing, with 16 or 8 sets on each side, and the outer guide slot tilt angle is 15° larger than the inner side (to adapt to the 32-point high-density layout), ensuring that the spacing between adjacent "signal input adjustment terminals (3)" is ≥3mm after unfolding, avoiding mutual interference when wiring the terminal wires.

[0051] A self-locking component 7 for locking the terminal wire is provided between two adjacent signal input adjustment terminals 3. When the signal output moving terminal 2 and the signal input adjustment terminal 3 are in the unfolded state, the self-locking component 7 unlocks the terminal wire. When the signal output moving terminal 2 and the signal input adjustment terminal 3 are in the closed state, the self-locking component 7 locks the terminal wire connected to the signal input adjustment terminal 3.

[0052] The synchronous upward moving component 8 is disposed between the multiple signal input adjustment terminals 3 and is used to control the vertical movement of the multiple signal input adjustment terminals 3. When the signal input adjustment terminal 3 moves upward, it will move along the fan-shaped expansion and contraction control track 4, so that the multiple signal input adjustment terminals 3 are expanded in a fan shape, which is convenient for wiring, maintenance or replacement. When the signal input adjustment terminal 3 is expanded, it will shift outward. At this time, the corresponding bottom signal output moving terminal 2 moves horizontally synchronously under the control of the vertical holding component 5, so that the distance between the multiple bottom signal output moving terminals 2 increases, which is convenient for wiring, maintenance or replacement.

[0053] The cover opening drive assembly 9 is disposed on the terminal block body 1 and connected to the synchronous upward moving assembly 8. When the cover opening drive assembly 9 is opened, it simultaneously drives the synchronous upward moving assembly 8 to move upward, causing multiple signal input adjustment terminals 3 to move upward and unfold. When the cover opening drive assembly 9 is closed, it drives multiple signal input adjustment terminals 3 to move downward and close.

[0054] The terminal block body 1 provides mounting support for each component, while the signal output movable end 2 and the signal input adjusting end 3 are responsible for signal output and input. When wiring, maintenance, or other operations are required, the cover-opening drive assembly 9 drives the synchronous upward moving assembly 8. The synchronous upward moving assembly 8 moves the signal input adjusting end 3 upward along the fan-shaped expansion and contraction control track 4, causing the signal input adjusting end 3 to expand in a fan shape and shift outwards. At this time, the vertical holding assembly 5 maintains the balance of the signal input adjusting end 3 during tilting movement and also drives the corresponding signal output movable end 2 to move synchronously laterally to increase the spacing, facilitating operation. In the expanded state, the separate signal conduction structure 6 disconnects the signal connection to avoid risks; in the closed state, it conducts signals to ensure transmission. Simultaneously, the self-locking assembly 7 unlocks the terminal wires when expanded and locks them when closed to prevent them from falling off.

[0055] The terminal block body 1 is provided with a status indicator light assembly 1000, a power port 4000, and a DIP switch 5000.

[0056] The status indicator assembly 1000 includes a status indicator 1001, a running status indicator 1002, and an error indicator 1003;

[0057] The terminal block body 1 is also provided with a programming port 2000 and an Ethernet input / output structure 3000.

[0058] The power port 4000 is used to input 24V and 0V power voltages;

[0059] The terminal block body 1 is provided with a channel indicator light 6000 for displaying the connection status of the signal input adjustment terminal 3 and the signal output moving terminal 2.

[0060] In this invention, multiple signal output movable terminals 2 are evenly distributed laterally along the terminal block body 1. Each signal output movable terminal 2 includes a transverse guide shaft 201 disposed inside the terminal block body 1, and also includes a signal output box 202. The signal output box 202 is provided with a transverse guide hole 203 and a signal output interface 204. The transverse guide hole 203 is movably sleeved within the transverse guide shaft 201.

[0061] Multiple signal output movable terminals 2 are evenly distributed laterally along the terminal block body 1, enabling multi-channel signal output. A horizontal guide shaft 201 is fixed inside the housing, and a signal output box 202 is movably fitted onto the horizontal guide shaft 201 through a horizontal guide hole 203. When the vertical holding assembly 5 moves the signal output box 202, the horizontal guide hole 203 slides stably along the horizontal guide shaft 201. A signal output interface 204 connects to an external device, transmitting the terminal block's signals to the external device to complete the signal output.

[0062] The signal input adjustment terminal 3 of the present invention includes a signal input box 301, and the signal input box 301 is provided with a plurality of signal input terminals 302;

[0063] The fan-shaped retractable control track 4 includes a drive shaft 401 disposed on the rear wall of the signal input box 301. The rear wall of the terminal block body 1 is provided with multiple drive guide grooves 402, and the drive shaft 401 is movably installed in one of the drive guide grooves 402. For a 32-point terminal block scenario, 32 sets of drive guide grooves 402 are provided. The upper arc groove 4022 is centered on the middle of the outer shell, with 16 sets on each side. The outer guide groove has a 15° larger tilt angle than the inner one (to adapt to a 111mm lateral dimension), ensuring that the spacing between the 32 signal input adjustment terminals 3 after unfolding is ≥3mm, avoiding interference between adjacent terminal lines. For a 16-point scenario, the number of guide grooves is halved, and the tilt angle is adjusted to 10° to adapt to the point density under the same shell size, making the unfolding structure more in line with actual point requirements.

[0064] The drive guide groove 402 includes a bottom vertical groove 4021 and an upper arc groove 4022 connected to the upper end of the bottom vertical groove 4021. Multiple upper arc grooves 4022 are evenly distributed laterally and are inclined to both sides with the middle position of the terminal block body 1 as the center. The upper arc grooves 4022 closer to the outer side of the terminal block body 1 have a larger inclination angle.

[0065] The signal input box 301 of the signal input adjustment terminal 3 is connected to an external terminal line via the signal input terminal 302 to receive signals. In the fan-shaped expansion and contraction control track 4, the drive shaft 401 on the rear wall of the signal input box 301 can move within the drive guide groove 402 on the rear wall of the terminal block body 1. The synchronous upward moving component 8 drives the drive shaft 401 to move upward along the bottom vertical groove 4021 first, and then enter the upper arc groove 4022; because the upper arc groove 4022 is inclined to both sides with the middle of the outer shell as the center and the outer inclination angle is greater, the drive shaft 401 causes the signal input adjustment terminal 3 to expand or close in a fan shape when it moves. The outer periphery of the signal input terminal 302 is provided with three sets of annular conductive protrusions (spaced 2mm apart), and adjacent protrusions form conductive grooves; the inner wall of the wiring sleeve 702 is provided with three sets of annular conductive ridges, and after being sleeved, the ridges are embedded in the grooves. Together with the U-shaped slot 706 and the limiting protrusion 707, it achieves dual protection of 'mechanical fixation + multi-point conductivity', avoiding the common problem of 'vibration causing wiring to fall off' in terminal blocks. The self-locking component 7 has a built-in overcurrent detection module. When the current of the terminal wire 701 exceeds 1.2A (the upper limit of a single channel), it automatically triggers the locking tongue plate 704 to unlock and cut off the signal path, thus improving the protection function.

[0066] The vertical holding assembly 5 of the present invention includes a vertical guide rod 501 disposed at the rear end of the signal output box 202, and a vertical guide hole 502 disposed on the signal input box 301, wherein the vertical guide rod 501 is movably inserted into a corresponding vertical guide hole 502;

[0067] The vertical guide rod 501 of the vertical holding assembly 5 is fixed to the rear end of the signal output box 202, and the vertical guide hole 502 on the signal input box 301 is fitted onto the vertical guide rod 501. When the signal input box 301 moves up and down or shifts laterally, the cooperation between the vertical guide rod 501 and the vertical guide hole 502 restricts the tilt of the signal input box 301, while simultaneously driving the signal output box 202 to move laterally in sync, ensuring the coordination of the two movements.

[0068] The split signal conduction structure 6 of the present invention includes a first conductive contact metal component 601 disposed at the bottom of the signal input box 301, and a second conductive contact metal component 602 disposed on the upper surface of the signal output box 202. The second conductive contact metal component 602 can be electrically connected to a corresponding first conductive contact metal component 601. The first conductive contact metal component 601 of the split signal conduction structure 6 is located at the bottom of the signal input box 301, and the second conductive contact metal component 602 is located on the upper surface of the signal output box 202. When the signal input adjustment end 3 and the signal output moving end 2 are closed, the two sets of metal components are in contact, realizing electrical connection to conduct the signal; when the two are unfolded, the two sets of metal components are separated, the electrical connection is broken, and the signal transmission is cut off.

[0069] The self-locking component 7 of the present invention includes a terminal wire 701, one end of which is provided with a wiring sleeve 702. The wiring sleeve 702 can be sleeved on a corresponding signal input terminal 302. A locking frame 703 is provided on the upper surface of the signal input box 301. A locking tongue plate 704 is provided on one side of the locking frame 703, and a locking tongue guide hole 705 is provided on the other side. A plurality of U-shaped slots 706 are provided on the locking tongue plate 704. A limiting protrusion ring 707 is provided on the lower edge of the wiring sleeve 702. The wiring sleeve 702 can enter into the U-shaped slot 706 and contact the lower surface of the U-shaped slot 706 through the upper surface of the limiting protrusion ring 707, thereby preventing the wiring sleeve 702 from falling off.

[0070] When the signal input box 301 is closed, the locking tongue plate 704 passes through the locking tongue guide hole 705 on the adjacent locking frame 703, locking the wiring sleeve 702 on the adjacent locking frame 703. In the self-locking assembly 7, the terminal wire 701 is sleeved on the signal input terminal 302 through the wiring sleeve 702. The locking frame 703 on the signal input box 301 provides an installation base for the locking tongue plate 704. The U-shaped groove 706 of the locking tongue plate 704 can hold the wiring sleeve 702, and the limiting protrusion 707 of the wiring sleeve 702 prevents it from falling out of the U-shaped groove 706. When the signal input box 301 is closed, the locking tongue plate 704 passes through the locking tongue guide hole 705 of the adjacent locking frame 703, locking the wiring sleeve 702 on the adjacent side; when unfolded, the locking tongue plate 704 disengages from the locking tongue guide hole 705, unlocking the terminal wire 701.

[0071] The synchronous upward movement component 8 of the present invention includes vertical guide grooves 801 disposed on both sides of the terminal block body 1. Vertical sliders 802 are movably disposed vertically within the vertical guide grooves 801. A synchronous drive rod 803 is connected between two vertical sliders 802. A horizontal straight slot 804 is disposed on the synchronous drive rod 803. The tails of multiple drive shafts 401 are respectively installed and movable within the horizontal straight slot 804. By the multiple drive shafts 401 being disposed within the horizontal straight slot 804, the horizontal height of the multiple drive shafts 401 is always kept the same. The vertical guide grooves 801 of the synchronous upward movement component 8 are fixed on both sides of the terminal block body 1. The vertical sliders 802 can slide up and down within the vertical guide grooves 801. The synchronous drive rod 803 connects the vertical sliders 802 on both sides to ensure that the two move synchronously. The tail of the drive shaft 401 of the signal input adjustment end 3 is installed in the transverse straight slot 804 of the synchronous drive rod 803. The transverse straight slot 804 restricts the height of the drive shaft 401, so that multiple drive shafts 401 keep the same horizontal height, thereby driving multiple signal input adjustment ends 3 to move up and down synchronously.

[0072] The cover-opening drive assembly 9 of the present invention includes a flip cover 901 disposed on the terminal block body 1. A swing rod 902 is disposed at the rotating end of the flip cover 901, and a control shaft 903 is disposed at the lower end of the swing rod 902. A drive crossbar 904 is disposed on the vertical slider 802, and a transverse drive groove 905 is disposed on the drive crossbar 904. The control shaft 903 is movably installed within the transverse drive groove 905. When the flip cover 901 is flipped open, it drives the swing rod 902 to swing upward, simultaneously causing the control shaft 903 to swing upward as well. At this time, the control shaft 903 drives the transverse drive groove 905 to move upward. The flip cover 901 of the cover-opening drive assembly 9 can flip on the terminal block body 1, and the swing rod 902 at the rotating end of the flip cover 901 swings as the flip cover 901 rotates. The control shaft 903 at the lower end of the swing rod 902 is installed within the transverse drive groove 905 of the drive crossbar 904 of the vertical slider 802. When the flip cover 901 is opened, it causes the swing rod 902 to swing upward, and the control shaft 903 drives the horizontal drive groove 905 to move upward, which in turn drives the vertical slider 802 to move upward; when the flip cover 901 is closed, it causes the swing rod 902 to swing downward, and the control shaft 903 drives the horizontal drive groove 905 to move downward, which in turn drives the vertical slider 802 to move downward.

[0073] The flip cover 901 of this invention is provided with a terminal wire entry slot 100, and the terminal wire entry slot 100 is provided with multiple guide rollers 200. The flip cover 901 and the terminal block body 1 are provided with a locking nut structure 300. The terminal wire entry slot 100 on the flip cover 901 facilitates the insertion of the terminal wire 701 into the interior of the terminal block. The guide rollers 200 in the slot can reduce the friction between the terminal wire 701 and the edge of the slot when it is inserted, thus protecting the terminal wire 701. The locking nut structure 300 between the flip cover 901 and the terminal block body 1 can lock and fix the flip cover 901 to the outer shell when it is closed, preventing the flip cover 901 from loosening and ensuring the stability of the terminal block structure.

[0074] The signal input terminal 302 of the present invention has annular conductive protrusions on its outer peripheral wall. The annular conductive protrusions are spaced apart along the axial direction of the signal input terminal 302, and a conductive groove is formed between two adjacent annular conductive protrusions. The inner wall of the connector sleeve 702 is provided with annular conductive ridges that are adapted to the conductive grooves. When the connector sleeve 702 is fitted onto the signal input terminal 302, the annular conductive ridges are embedded in the corresponding conductive grooves, and the annular conductive protrusions are in close contact with the inner wall of the connector sleeve 702, forming a multi-point conductive contact structure, which enhances the conductive stability between the signal input terminal 302 and the connector sleeve 702. The annular conductive protrusions 400 on the outer periphery of the signal input terminal 302 and the annular conductive ridges 600 on the inner wall of the connector sleeve 702 cooperate with each other. When the sleeve 702 is fitted onto the signal input terminal 302, the annular conductive protrusion 600 is embedded in the conductive groove 500 formed by the adjacent annular conductive protrusion 400. At the same time, the annular conductive protrusion 400 is in close contact with the inner wall of the sleeve 702, forming multi-point conductive contact, increasing the conductive contact area, reducing the contact resistance, and thus enhancing the conductive stability between the signal input terminal 302 and the sleeve 702.

[0075] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wiring expansion terminal block adapted to multi-point industrial large terminal blocks, comprising a terminal block body (1), wherein the terminal block body (1) is provided with a status indicator light assembly (1000), a power port (4000), and a DIP switch (5000). Its features are: The terminal block body (1) is provided with multiple movable signal output terminals (2) and multiple signal input adjustment terminals (3) arranged in the lateral direction; it also includes: A fan-shaped retraction and expansion control track (4) is connected to multiple signal input adjustment terminals (3); Multiple vertical holding components (5) are respectively connected between the signal output moving end (2) and a corresponding signal input adjusting end (3); A separate signal conduction structure (6) is disposed between the signal output moving end (2) and a corresponding signal input adjustment end (3); A self-locking assembly (7) for locking the terminal wire is provided between two adjacent signal input adjustment terminals (3); A synchronous upward movement component (8) is disposed between multiple signal input adjustment terminals (3) and is used to control the multiple signal input adjustment terminals (3) to move up and down. The cover opening drive assembly (9) is disposed on the terminal block body (1) and connected to the synchronous upward moving assembly (8).

2. The wiring expansion terminal block adapted to multi-point industrial large terminal blocks according to claim 1, characterized in that: The status indicator assembly (1000) includes a status indicator (1001), a running status indicator (1002), and an error indicator (1003). The terminal block body (1) is also provided with a programming port (2000) and an Ethernet input / output structure (3000). The power port (4000) is used to input 24V and 0V power voltages; The terminal block body (1) is provided with a channel indicator (6000) for displaying the connection status of the signal input adjustment terminal (3) and the signal output moving terminal (2).

3. The wiring expansion terminal block adapted to multi-point industrial large terminal blocks according to claim 2, characterized in that: Multiple signal output mobile terminals (2) are evenly distributed laterally along the terminal block body (1). Each signal output mobile terminal (2) includes a transverse guide shaft (201) disposed inside the terminal block body (1) and a signal output box (202). The signal output box (202) is provided with a transverse guide hole (203) and a signal output interface (204). The transverse guide hole (203) is movably sleeved inside the transverse guide shaft (201).

4. The wiring expansion terminal block adapted to multi-point industrial large terminal blocks according to claim 3, characterized in that: The signal input adjustment terminal (3) includes a signal input box (301), and the signal input box (301) is provided with a plurality of signal input terminals (302). The fan-shaped retraction control track (4) includes a drive shaft (401) disposed on the rear wall of the signal input box (301). The rear wall of the terminal block body (1) is provided with multiple drive guide grooves (402), and the drive shaft (401) is movably installed in one of the drive guide grooves (402). The drive guide groove (402) includes a bottom vertical groove (4021) and an upper arc groove (4022) connected to the upper end of the bottom vertical groove (4021). Multiple upper arc grooves (4022) are evenly distributed laterally and are inclined to both sides with the middle position of the terminal block body (1) as the center. The upper arc groove (4022) closer to the outer side of the terminal block body (1) has a larger inclination angle.

5. A wiring expansion terminal block adapted to multi-point industrial large terminal blocks according to claim 4, characterized in that: The vertical holding assembly (5) includes a vertical guide rod (501) disposed at the rear end of the signal output box (202), and a vertical guide hole (502) is provided on the signal input box (301). The vertical guide rod (501) is movably inserted into a corresponding vertical guide hole (502).

6. The wiring expansion terminal block adapted to multi-point industrial large terminal blocks according to claim 5, characterized in that: The split signal conduction structure (6) includes a first conduction contact metal component (601) disposed at the bottom of the signal input box (301), and a second conduction contact metal component (602) disposed on the upper surface of the signal output box (202). The second conduction contact metal component (602) can be electrically connected to a corresponding first conduction contact metal component (601).

7. A wiring expansion terminal block adapted to multi-point industrial large terminal blocks according to claim 6, characterized in that: The self-locking component (7) includes a terminal wire (701), one end of which is provided with a wiring sleeve (702). The wiring sleeve (702) can be fitted onto a corresponding signal input terminal (302). A locking frame (703) is provided on the upper surface of the signal input box (301). A locking tongue plate (704) is provided on one side of the locking frame (703), and a locking tongue guide hole (705) is provided on the other side. Multiple U-shaped slots (706) are provided on the locking tongue plate (704). A limit ring (707) is provided on the lower edge of the wiring sleeve (702).

8. A wiring expansion terminal block adapted to multi-point industrial large terminal blocks according to claim 7, characterized in that: The synchronous upward moving component (8) includes vertical guide grooves (801) disposed on both sides of the terminal block body (1). Vertical sliders (802) are movably disposed in the vertical guide grooves (801). A synchronous drive rod (803) is connected between two vertical sliders (802). A horizontal straight slot (804) is provided on the synchronous drive rod (803). The tails of multiple drive shafts (401) are respectively installed in the horizontal straight slot (804) and move.

9. A wiring expansion terminal block adapted to multi-point industrial large terminal blocks according to claim 8, characterized in that: The cover opening drive assembly (9) includes a flip cover (901) disposed on the terminal block body (1), a swing rod (902) disposed at the rotating end of the flip cover (901), a control shaft (903) disposed at the lower end of the swing rod (902), a drive crossbar (904) disposed on the vertical slider (802), a transverse drive groove (905) disposed on the drive crossbar (904), and the control shaft (903) is movably installed in the transverse drive groove (905). The flip cover (901) is provided with a terminal wire entry slot (100), and the terminal wire entry slot (100) is provided with multiple wire pulleys (200). The flip cover (901) and the terminal block body (1) are provided with a locking nut structure (300).

10. A wiring expansion terminal block adapted to multi-point industrial large terminal blocks according to claim 9, characterized in that: The outer peripheral wall of the signal input terminal (302) is provided with annular conductive protrusions, which are distributed at intervals along the axial direction of the signal input terminal (302), and a conductive groove is formed between two adjacent annular conductive protrusions; the inner wall of the terminal sleeve (702) is provided with annular conductive ridges that are adapted to the conductive grooves.

Images