Large-current quick-connection terminal assembly for industrial gateway

Abstract

The invention discloses a large-current quick-connection terminal assembly for an industrial gateway, which relates to the technical field of industrial gateways and comprises a terminal, an elastic clamping structure, an insulating shell, an arc extinguishing assembly and an arc extinguishing plate. And the driving assembly is connected with the arc extinguishing assembly and is used for driving the arc extinguishing plate to move between an intervention position and a separation position, and the intervention position is a position where the arc extinguishing plate separates the electrical contact between the wire lug and the elastic clamping structure. According to the invention, the movable arc extinguishing plate is arranged, so that the arc extinguishing plate can firstly intervene between the wire lug and the sheet-shaped spring in the terminal plugging and unplugging process. At the moment of live-line separation, the arc extinguishing plate physically isolates the contact, absorbs the heat of the arc and rapidly extinguishes the arc. Therefore, the problems of contact resistance increase, signal interruption or equipment failure caused by burning a contact surface by an electric arc at high temperature are effectively avoided, the reliability and the safety of the industrial gateway in a non-stop maintenance scene are remarkably improved, hot plug arcing is effectively prevented, and the safety of equipment and personnel is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of industrial gateway technology, specifically to a high-current quick-connect terminal assembly for industrial gateways. Background Technology

[0002] Industrial communication gateways are core communication devices in the Industrial Internet of Things (IIoT) field. They connect different networks and enable data transmission, combining traditional industrial control equipment with modern network technology to achieve broader monitoring and management of industrial production processes, providing crucial support for intelligent manufacturing and industrial automation. They can collect data from industrial field devices such as PLCs, sensors, and instruments, and convert the data into a unified format through protocol conversion, supporting multiple industrial and IoT protocols such as Modbus, PROFINET, OPCUA, and MQTT. Gateways possess data conversion, processing, and edge computing capabilities, enabling data preprocessing, analysis, and simple control decisions at the network edge close to the data source. They also integrate functions such as device management, remote maintenance and debugging, and security protection through data encryption, authentication, and firewalls.

[0003] Due to the continuous nature of industrial production, industrial gateways often require line maintenance or module replacement without shutting down the system or interrupting power. Currently, quick-connect terminals are commonly used for field wiring of industrial gateways to improve installation efficiency. However, the moment quick-connect terminals are plugged in or unplugged while the power is on, the load current can cause arcing between the separated contacts. Even if this arc lasts for a very short time, it can still burn the contact surface with high temperatures, leading to increased contact resistance. Long-term accumulated damage will severely impair connection performance and may even cause signal transmission interruptions or equipment failures, making it difficult to meet the high reliability maintenance requirements of industrial gateways. Summary of the Invention

[0004] The purpose of this invention is to provide a high-current quick-connect terminal assembly for industrial gateways to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-current quick-connect terminal assembly for industrial gateways, comprising: The terminal is electrically connected to the PCB board of the industrial gateway, and the terminal is provided with an elastic clamping structure for clamping the wire lug; An insulating housing is fitted over the outside of the terminal, and the insulating housing is provided with a socket for inserting a wire lug; An arc-extinguishing assembly is movably disposed on one side of the insulating shell. The arc-extinguishing assembly is provided with an arc-extinguishing plate that can be inserted into the socket and interposed between the wire lug and the elastic clamping structure. And a driving component, connected to the arc extinguishing component, for driving the arc extinguishing plate to move between an intervention position and a separation position, wherein the intervention position is the position where the arc extinguishing plate's disconnecting lug makes electrical contact with the elastic clamping structure.

[0006] Furthermore, the driving assembly includes a vertical plate fixedly mounted on the PCB board, a fixed cylinder fixedly sleeved on the vertical plate, and a sliding cylinder slidably sleeved around the periphery of the fixed cylinder. The arc-extinguishing plate is connected to the end of the sliding cylinder facing the insulating shell, and the sliding cylinder can slide along the axis of the fixed cylinder to drive the arc-extinguishing plate to insert or retract from the socket.

[0007] Furthermore, the sliding cylinder has a pushing part at one end facing the insulating shell, and the insulating shell has a pressing part with a pressing block connected to it; When the sliding cylinder drives the arc-extinguishing plate to insert into the socket to the preset position, the pushing part can squeeze the pressing part, so that the squeezing block acts on the elastic clamping structure to release the locking of the wire lug.

[0008] Furthermore, a hollow cylinder is connected to the upright plate, and a piston part is fixedly sleeved at the end of the sliding cylinder away from the insulating shell; The piston part is slidably and sealed inside the hollow cylinder, and a communicating cavity is formed between the piston part and the vertical plate; The fixed cylinder is equipped with an annular airbag capable of clamping the cable, and the connecting cavity is connected to the annular airbag via a flexible tube. When the piston moves, it can change the volume of the communicating cavity to inflate or deflate the annular airbag.

[0009] Furthermore, a sliding ring is slidably connected coaxially inside the fixed cylinder, and the annular airbag is connected to the sliding ring; The fixed cylinder contains a drive ring with a limit connection, and a spring abuts against the drive ring and the sliding ring. The piston section is embedded with a permanent magnet, and the sliding ring is made of a magnetically conductive material. When the piston section moves close to the sliding ring, it can magnetically drive the sliding ring to compress the spring.

[0010] Furthermore, when the piston moves away from the insulating shell to inflate the annular airbag, the sliding ring, under the magnetic attraction of the permanent magnet and the elastic force of the spring, drives the inflated annular airbag to move away from the insulating shell in order to detect the connection status of the wire lug.

[0011] Furthermore, the elastic clamping structure includes a conductive plate fixed to the terminal and a leaf spring connected to the conductive plate, wherein a clamping space is formed between the leaf spring and the conductive plate. The leaf spring has an integrally formed anti-retraction buckle, and the lug has an anti-retraction opening. The anti-retraction buckle can be engaged with the anti-retraction opening to prevent the lug from coming loose.

[0012] Furthermore, a pressing part is detachably connected to the top of the insulating shell, and a downwardly extending extrusion block is fixed to the pressing part. A notch is provided on the wire lug for the extrusion block to pass through. After the extrusion block passes through the notch, it can extrude the anti-retraction buckle to disengage it from the anti-retraction opening.

[0013] Furthermore, the fixed cylinder has a protrusion fixed to its periphery, and the sliding cylinder has an oblong hole on its periphery for the protrusion to engage. The protrusion can slide axially within the oblong hole to circumferentially limit the sliding cylinder.

[0014] Furthermore, the arc-extinguishing plate is made of ceramic material, and the sum of the thickness dimensions of the arc-extinguishing plate and the wire lug is equal to the longitudinal height dimension of the socket.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, by setting a movable arc-extinguishing plate, during the terminal insertion and removal process, the arc-extinguishing plate can first intervene between the wire lug and the leaf spring. At the moment of energization separation, the arc-extinguishing plate physically isolates the contact, absorbs the arc heat and quickly extinguishes the arc. This effectively avoids the problem of arc high temperature burning the contact surface, leading to increased contact resistance, signal interruption or equipment failure. It significantly improves the reliability and safety of industrial gateways in non-stop maintenance scenarios, effectively prevents hot-plugging arcing, and ensures the safety of equipment and personnel. 2. In this invention, by sliding the sliding cylinder, the arc extinguishing plate is sequentially driven to insert into the isolation, and the pushing part squeezes and presses the pressing part to unlock the anti-retrieval buckle. The operator only needs to push the insulating block to complete the arc extinguishing and unlocking actions in sequence. No multiple people or complicated tools are required, which greatly improves the efficiency of on-site wiring and maintenance. The operation is simple and ergonomic. 3. In this invention, an annular airbag clamping mechanism is introduced. After the cable is connected, the piston moves and the annular airbag is inflated by air pressure transmission, tightly wrapping and clamping the cable. This not only provides flexible support for the cable and effectively absorbs vibration energy, but also avoids bending stress on the cable lug due to cable shaking, prevents plastic deformation or breakage of the cable lug, and ensures the mechanical stability of the long-term connection. 4. In this invention, the combination of the magnetic attraction of the permanent magnet and the elasticity of the spring is utilized. At the end of the insertion and removal process, the expanded annular airbag will generate a reverse pulling force on the cable. If the cable lug is not properly tightened (the anti-retraction buckle is not locked), the cable will be pulled out, and the operator can visually detect the connection failure. If the cable is not pulled out, it proves that the connection is in place. This "self-checking" mechanism effectively prevents the hidden dangers caused by loose connections or lack of tightening, and improves the quality of maintenance. 5. In this invention, the arc-extinguishing plate is made of ceramic material, which is resistant to high temperature and arc erosion, and can be reused, thus extending the overall life of the terminal assembly. At the same time, the annular airbag expands its annular hole when it is deflating, which does not hinder the normal insertion of the wire lug. After inflation, it can adapt to cables of different outer diameters and provide adaptive clamping force, thus having strong versatility. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a high-current quick-connect terminal assembly for an industrial gateway according to the present invention. Figure 2 This is a schematic diagram showing the positional relationship of the terminals, insulating shell, and sliding cylinder after assembly in this invention; Figure 3 for Figure 2 A diagram illustrating the positional relationships from a first-person perspective; Figure 4 for Figure 3 Schematic diagram of the positional relationships of the central structure after explosive decomposition; Figure 5 for Figure 3 A schematic diagram showing the positional relationship of the middle section after it has been cut open; Figure 6 for Figure 2 A diagram illustrating the positional relationships from a second-person perspective; Figure 7 for Figure 6 A schematic diagram showing the positional relationship of the middle section after it has been cut open; Figure 8 This is a schematic diagram showing the positional relationship between the sliding ring, the driving ring, and the annular airbag after assembly in this invention. Figure 9 for Figure 8 A schematic diagram showing the positional relationship of the middle section after it has been cut open.

[0017] The following are the annotations for each item in the figure: 1. PCB board; 2. Cable; 3. Stand plate; 4. Hollow cylinder; 5. Insulating shell; 6. Pressing part; 7. Terminal; 8. Wire lug; 9. Arc extinguishing plate; 10. Sliding cylinder; 11. Insulating block; 12. Insulating plate; 13. Flexible hose; 14. Waist-shaped hole; 15. Protrusion; 16. Pushing part; 17. Extrusion block; 18. Notch; 19. Anti-reverse buckle; 20. Leaf spring; 21. Conductive plate; 22. Piston part; 23. Fixed cylinder; 24. Annular airbag; 25. Spring; 26. Limiting block; 27. Drive ring; 28. Sliding ring; 29. ​​Connecting cavity. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-9 This invention provides a technical solution: a high-current quick-connect terminal assembly for an industrial gateway, comprising a terminal 7 electrically connected to an industrial gateway PCB board 1. The terminal 7 has a U-shaped outer contour, with pins on both sides electrically connected to the industrial gateway PCB board 1. A conductive plate 21 is fixedly connected between the pins on both sides of the terminal 7, and the conductive plate 21 and the terminal 7 are electrically connected. A leaf spring 20 is connected to the top of the conductive plate 21, with one end of the leaf spring 20 connected to the conductive plate 21. Specifically, the leaf spring 20 can be connected to the conductive plate 21 by welding, screw connection, or snap-fit ​​connection. The leaf spring 20 is made of metal and is electrically connected to the conductive plate 21. An anti-retraction buckle 19 is integrally fixed to one end of the leaf spring 20. An insulating shell 5 is fitted around the outside of the terminal 7, and the inner wall of the insulating shell 5 is flush with the outer wall of the terminal 7. The outer walls of the terminals 7 are connected by a snap-fit ​​mechanism. The insulating shell 5 has an insertion port on the side wall away from the anti-retraction buckle 19. The top of the insulating shell 5 is detachably connected to a pressing part 6, which can be connected to the insulating shell 5 by a snap-fit ​​mechanism. The side of the terminal 7 facing the top of the conductive plate 21 and the leaf spring 20 form a clamping space. A wire lug 8 is inserted into the clamping space. A cable 2 is electrically connected to the wire lug 8. The wire lug 8 is inserted into the clamping space through the insertion port, and the leaf spring 20 generates an upward elastic squeezing force on the wire lug 8, so that the wire lug 8 is pressed tightly in the clamping space. An anti-retraction port is provided at the bottom of the end of the wire lug 8 away from the cable 2. The anti-retraction buckle 19 extends obliquely upward in the direction away from the insertion port and can engage with the anti-retraction port of the wire lug 8, and can prevent the wire lug 8 from loosening in the clamping space. Combination Figures 2 to 9 As shown, and please refer to the following: Figure 4A downwardly extending pressing block 17 is fixedly connected to the end of the pressing part 6 away from its connection with the insulating shell 5. The insulating shell 5 has a clearance groove for the pressing block 17 to pass freely, and the wire lug 8 has a notch 18 for the pressing block 17 to pass freely. After the pressing block 17 enters the notch 18, it can exert a downward pressing force on the anti-retraction buckle 19, thereby causing the anti-retraction buckle 19 to swing downward and disengage from the state of abutting against the inner wall of the anti-retraction opening. At this time, the wire lug 8 can be pulled out from the socket and the clamping space. In addition, the longitudinal height dimension of the socket is larger than that of the wire lug. Regarding the thickness dimension of 8, when it is necessary to pull the wire lug 8 out of the socket to achieve hot plugging and unplugging of the terminal 7, the pressing part 6 is pressed first, causing the pressing part 6 to drive the pressing block 17 to move downward, and causing the pressing block 17 to exert downward pressing force on the anti-retraction buckle 19. In this way, the anti-retraction buckle 19 will disengage from the state of abutting against the inner wall of the anti-retraction port. Then, the cable 2 is pulled out towards the outside of the insulating shell 5, so that the wire lug 8 can be removed from the clamping space and the socket, thereby achieving hot plugging and unplugging of the terminal 7. In addition, in this embodiment, the pressing part 6 and the pressing block 17 are both made of insulating material. Combination Figures 2 to 9 As shown, and please refer to the following: Figure 3 and Figure 4 An insulating plate 12 is fixedly mounted on the PCB board 1. A vertical plate 3 is integrally formed and fixed to one end of the insulating plate 12. The vertical plate 3 is located on the outside of the PCB board 1, and a fixing cylinder 23 is fixedly sleeved on the vertical plate 3. The inner cavity of the fixing cylinder 23 allows the wire lug 8 and the cable 2 to pass freely. A sliding cylinder 10 is fitted around the periphery of the fixing cylinder 23. The sliding cylinder 10 can slide freely along the axial direction of the fixing cylinder 23 around its periphery. In addition, a pushing part 16 is fixedly connected to the end of the sliding cylinder 10 facing the insulating shell 5. The pushing part 16 cooperates with the inclined surface of the pressing part 6. An arc-extinguishing plate 9 is also fixedly connected to the end face of the sliding cylinder 10. The arc-extinguishing plate 9 is horizontally fixed to the end face of the sliding cylinder 10 and is made of ceramic material, such as alumina ceramic or silicon nitride ceramic. The arc-extinguishing plate 9 and the wire lug 8 are shown in the table below. The surfaces are in contact, and the sum of the thicknesses of the arc-extinguishing plate 9 and the wire lug 8 is consistent with the longitudinal height of the socket. When the sliding cylinder 10 slides along the periphery of the fixed cylinder 23 toward the insulating shell 5, the arc-extinguishing plate 9 will be inserted into the socket and then enter the clamping space. As the sliding cylinder 10 continues to slide, the arc-extinguishing plate 9 can be inserted between the bottom surface of the wire lug 8 and the leaf spring 20. In this way, the arc-extinguishing plate 9 prevents the generation of an electric arc between the leaf spring 20 and the wire lug 8. When the electric arc contacts the ceramic surface of the arc-extinguishing plate 9, the heat is quickly absorbed, reducing the electric arc temperature and increasing the electric arc resistance, eventually extinguishing the arc. In addition, in order to facilitate the sliding of the sliding cylinder 10 along the periphery of the fixed cylinder 23, in this embodiment, an insulating lever 11 is fixedly connected to one end of the sliding cylinder 10 facing the insulating shell 5. Combination Figures 2 to 9As shown, a protrusion 15 is fixedly connected to the periphery of the end of the fixed cylinder 23 facing the insulating shell 5. A waist-shaped hole 14 is provided on the periphery of the sliding cylinder 10 for the protrusion 15 to engage. The protrusion 15 can slide freely along the axial direction of the fixed cylinder 23 within the waist-shaped hole 14, and can circumferentially limit the sliding cylinder 10, preventing circumferential rotation of the sliding cylinder 10, which would cause the pushing part 16 and the arc-extinguishing plate 9 to deflect. Furthermore, a sliding ring 28 is coaxially engaged with the inner wall of the fixed cylinder 23. The sliding ring 28 can slide freely along the axial direction of the fixed cylinder 23 within the inner wall of the fixed cylinder 23. Additionally, the wire lug 8 and the cable 2 can freely pass through the sliding ring 28. The sliding ring 28 is connected to an annular airbag 24 in the direction away from the insulating shell 5. After the annular airbag 24 is inflated and expands, it will be coaxial with the sliding ring 28. The expanded annular airbag 24 is fitted on the cable 2 and protects the cable 2. When the cable 2 is subjected to vibration, it can be buffered by the annular airbag 24 to provide shock absorption and protection. This avoids the risk that the cable 2 will shake in the inner cavity of the fixed cylinder 23 under high-frequency vibration conditions due to the large gap between the inner cavity of the fixed cylinder 23 and the periphery of the cable 2, which would cause bending stress on the wire lug 8 and lead to plastic deformation or even breakage of the wire lug 8. Combination Figures 2 to 9 As shown, and please refer to the following: Figure 4A hollow cylinder 4 is horizontally connected to the upright plate 3. The inner diameter of the hollow cylinder 4 is larger than the outer diameter of the sliding cylinder 10. A piston part 22 is fixedly sleeved on one end of the sliding cylinder 10 facing the upright plate 3. The outer diameter of the piston part 22 is the same as the inner diameter of the hollow cylinder 4, and it can slide freely along the axial direction of the hollow cylinder 4 or the fixed cylinder 23 within the cavity of the hollow cylinder 4. In addition, a connecting cavity 29 is formed between the piston part 22 and the surface of the upright plate 3. A flexible hose 13 is installed on the upright plate 3. The two ends of the flexible hose 13 are respectively connected to the annular airbag 24 and the connecting cavity 29. When the piston part 22 moves towards the insulating shell 5 within the cavity of the hollow cylinder 4, the internal volume of the connecting cavity 29 increases, allowing air from the annular airbag 24 to enter the connecting cavity 29 through the flexible hose 13, causing the volume of the annular airbag 24 to decrease. At this time, the annular hole of the annular airbag 24 will expand, allowing the lug 8 and the cable 2 to exit from the deflated cavity. The air in the annular airbag 24 passes through the annular hole after being deflated. When the piston 22 moves in the opposite direction, the internal volume of the connecting cavity 29 decreases, and the air in the connecting cavity 29 enters the annular airbag 24 through the hose 13, thereby inflating the annular airbag 24. This causes the annular airbag 24 to expand in volume after inflation, thereby reducing the diameter of the annular hole of the annular airbag 24. This allows the annular airbag 24 to clamp the cable 2 after inflation. After deflation, the annular hole of the annular airbag 24 allows the lug 8 and the cable 2 to pass through. Specifically, the outermost part of the annular airbag 24 is attached to the end face of the sliding ring 28. This allows the annular hole of the annular airbag 24 to be relatively enlarged after deflation. When the annular airbag 24 is inflated, it expands, causing its annular hole to be relatively smaller, thus clamping the cable 2. Combination Figures 2 to 9 As shown, and please refer to the following: Figure 4A drive ring 27 is installed on the inner wall of the fixed cylinder 23. The drive ring 27 is located between the sliding ring 28 and the arc-extinguishing plate 9. Two limiting blocks 26 are fixedly connected to the periphery of the drive ring 27. Two slots are opened on the inner wall of the fixed cylinder 23. The limiting blocks 26 are engaged in the slots. By the limiting blocks 26 being engaged in the slots, the drive ring 27 is limited, so that the drive ring 27 is limited and connected to the inner cavity of the fixed cylinder 23. A ring-shaped permanent magnet is embedded in the piston part 22. The sliding ring 28 is made of magnetic material and is in a mutually cooperating state with the permanent magnet embedded in the piston part 22. A spring 25 is installed between the drive ring 27 and the sliding ring 28. The two ends of the elastic force direction are welded to the end faces of the drive ring 27 and the sliding ring 28, respectively. When the piston part 22 moves toward the insulating shell 5, the piston part 22 will gradually approach the sliding ring 28, and the permanent magnet embedded in the piston part 22 will generate a magnetic attraction force on the sliding ring 28, causing the sliding ring 28 to move toward the piston part 22. When the sliding ring 28 moves, it will compress the spring 25, and the spring 25 will begin to accumulate elastic potential energy. When the piston part 22 gradually moves away from the sliding ring 28, the magnetic attraction force on the sliding ring 28 disappears, and then, under the action of the elastic potential energy accumulated by the spring 25, it moves away from the insulating shell 5.

[0020] Working principle of the invention: When hot-plugging the cable 2 on terminal 7, for example, when it is necessary to pull out the lug 8 on terminal 7 and the cable 2, the operator first puts on insulating gloves and pushes the insulating lever 11, which causes the sliding cylinder 10 to slide on the periphery of the fixed cylinder 23 toward the insulating shell 5. When sliding, the pushing part 16 will gradually approach the pressing part 6, and at the same time the arc extinguishing plate 9 will begin to be inserted into the socket. As the sliding cylinder 10 continues to slide, the arc extinguishing plate 9 is inserted into the socket and is locked between the lug 8 and the leaf spring 20, which causes the lug 8 to gradually lose electrical contact with the leaf spring 20. During this process, the arc extinguishing plate 9 separates the lug 8 and the leaf spring 20, so that no electric arc is generated between the lug 8 and the leaf spring 20. When the pushing part 16 contacts the pressing part 6 and begins to exert downward pressure on the pressing part 6, the pressing part 6 moves downward, which in turn causes the pressing block 17 to exert downward pressure on the anti-retraction buckle 19, causing the anti-retraction buckle 19 to bend and deform downward elastically. This causes the anti-retraction buckle 19 to disengage from the inner wall of the anti-retraction port on the lug 8, allowing the lug 8 to be pulled out of the clamping space. When the sliding cylinder 10 moves toward the insulating shell 5, it causes the piston part 22 to move away from the vertical plate 3, which increases the internal volume of the connecting cavity 29. This allows the air in the annular airbag 24 to enter the connecting cavity 29 from the hose 13, allowing the lug 8 and the cable 2 to be removed from the annular airbag 24 after the annular hole has expanded after deflation. When the lug 8 is reinserted into the terminal 7, the arc-extinguishing plate 9 is located in the clamping space, and the annular airbag 24 is deflated. The cable 2 and lug 8 are inserted into the fixing cylinder 23 and can be inserted into the clamping space through the socket. Then, the insulating block 11 is moved away from the insulating shell 5, causing the sliding cylinder 10 to move away from the insulating shell 5. This causes the arc-extinguishing plate 9 and the pushing part 16 to gradually move away from the insulating shell 5, so that the leaf spring 20 will eventually push against the lug 8. At the same time, the anti-retraction buckle 19 will be inserted into the anti-retraction port and press against the inner wall of the anti-retraction port away from the socket, thereby preventing the lug 8 from retracting. In addition, the piston part 22 will move towards the upright plate 3, thereby reducing the internal volume of the connecting cavity 29. This allows the air in the connecting cavity 29 to enter the annular airbag 24 through the hose 13, causing the annular airbag 24 to inflate and expand. As the piston 22 moves toward the vertical plate 3, it first approaches the sliding ring 28 and then moves away from it. When approaching the sliding ring 28, the sliding ring 28 is gradually attracted by the magnetic force of the permanent magnet on the piston 22. Simultaneously, the annular air bladder 24 is not fully inflated, and its volume is not fully expanded. The sliding ring 28 compresses the spring 25, which accumulates elastic potential energy. When the piston 22 begins to move away from the sliding ring 28, the sliding ring 28, under the combined force of the magnetic attraction of the piston 22 and the released elastic potential energy of the spring 25, will move away from the insulating shell 5. At this point, the annular air bladder 24 has expanded, although not fully, but the annular hole of the annular air bladder 24 has already exerted a clamping force on the cable 2. Therefore, when the sliding ring 28 moves... The annular airbag 24 will be pushed to move away from the insulating shell 5. During this process, the volume of the annular airbag 24 continues to expand, and the clamping force of its annular hole surface on the cable 2 becomes greater and greater. Therefore, it can generate a pulling force on the cable 2 away from the insulating shell 5, so that it can detect whether the anti-retraction port on the cable 2 is tight with the anti-retraction buckle 19. If it is not tight, the cable 2 will be pulled out under the clamping friction force of the annular hole surface of the annular airbag 24. The operator can observe the movement of the cable 2 away from the insulating shell 5, and thus determine that the cable 2 is not fixed in place. Conversely, if it is tight, the cable 2 cannot move away from the insulating shell 5, and thus it can be determined that the cable 2 is fixed in place. In this way, it is possible to determine whether the cable 2 is fixed during the hot-plugging process.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-current quick-connect terminal assembly for an industrial gateway, characterized in that, include: Terminal (7) is electrically connected to the PCB board (1) of the industrial gateway. The terminal (7) is provided with an elastic clamping structure for clamping the wire lug (8). An insulating housing (5) is fitted over the outside of the terminal (7), and the insulating housing (5) is provided with a socket for inserting the lug (8); An arc-extinguishing assembly is movably disposed on one side of the insulating shell (5). The arc-extinguishing assembly is provided with an arc-extinguishing plate (9) that can be inserted into the socket and interposed between the wire lug (8) and the elastic clamping structure. And a drive component, connected to the arc extinguishing component, for driving the arc extinguishing plate (9) to move between an intervention position and a separation position, wherein the intervention position is the position where the arc extinguishing plate (9) and the wire break lug (8) make electrical contact with the elastic clamping structure.

2. The high-current quick-connect terminal assembly for an industrial gateway according to claim 1, characterized in that, The drive assembly includes a vertical plate (3) fixedly mounted on a PCB board (1), a fixed cylinder (23) fixedly sleeved on the vertical plate (3), and a sliding cylinder (10) slidably sleeved around the fixed cylinder (23). The arc-extinguishing plate (9) is connected to one end of the sliding cylinder (10) facing the insulating shell (5). The sliding cylinder (10) can slide along the axial direction of the fixed cylinder (23) to drive the arc-extinguishing plate (9) to insert or withdraw from the socket.

3. The high-current quick-connect terminal assembly for an industrial gateway according to claim 2, characterized in that, The sliding cylinder (10) has a pushing part (16) at one end facing the insulating shell (5), and the insulating shell (5) has a pressing part (6), and the pressing part (6) is connected to a squeezing block (17). When the sliding cylinder (10) drives the arc-extinguishing plate (9) to be inserted into the socket to the preset position, the pushing part (16) can squeeze the pressing part (6), so that the squeezing block (17) acts on the elastic clamping structure to release the locking of the wire lug (8).

4. The high-current quick-connect terminal assembly for an industrial gateway according to claim 2, characterized in that, A hollow cylinder (4) is connected to the upright plate (3), and a piston part (22) is fixedly sleeved at the end of the sliding cylinder (10) away from the insulating shell (5). The piston part (22) is sealed and slidably connected inside the hollow cylinder (4), and the piston part (22) and the vertical plate (3) form a communicating cavity (29). The fixed cylinder (23) is provided with an annular airbag (24) capable of clamping the cable (2), and the connecting cavity (29) is connected to the annular airbag (24) through a hose (13); When the piston (22) moves, it can change the volume of the connecting cavity (29) to inflate or deflate the annular airbag (24).

5. A high-current quick-connect terminal assembly for an industrial gateway according to claim 4, characterized in that, A sliding ring (28) is coaxially slidably connected inside the fixed cylinder (23), and the annular airbag (24) is connected to the sliding ring (28); The fixed cylinder (23) has a fixed drive ring (27) with a limit connection inside, and a spring (25) abuts against the drive ring (27) and the sliding ring (28). The piston (22) is embedded with a permanent magnet, and the sliding ring (28) is made of a magnetic material. When the piston (22) moves close to the sliding ring (28), it can magnetically drive the sliding ring (28) to compress the spring (25).

6. A high-current quick-connect terminal assembly for an industrial gateway according to claim 5, characterized in that, When the piston (22) moves away from the insulating shell (5) to inflate the annular airbag (24), the sliding ring (28) moves the inflated annular airbag (24) away from the insulating shell (5) under the magnetic attraction of the permanent magnet and the elastic force of the spring (25) to detect the connection status of the wire lug (8).

7. A high-current quick-connect terminal assembly for an industrial gateway according to claim 1, characterized in that, The elastic clamping structure includes a conductive plate (21) fixed to the terminal (7) and a leaf spring (20) connected to the conductive plate (21), wherein a clamping space is formed between the leaf spring (20) and the conductive plate (21); The leaf spring (20) has an integrally formed anti-retraction buckle (19), and the lug (8) has an anti-retraction opening. The anti-retraction buckle (19) can be inserted into the anti-retraction opening to prevent the lug (8) from coming loose.

8. A high-current quick-connect terminal assembly for an industrial gateway according to claim 7, characterized in that, The top of the insulating shell (5) is detachably connected to a pressing part (6), and a pressing block (17) extending downward is fixed on the pressing part (6). The wire lug (8) is provided with a notch (18) for the pressing block (17) to pass through. After the pressing block (17) passes through the notch (18), it can press the anti-reverse buckle (19) to make it disengage from the anti-reverse opening.

9. A high-current quick-connect terminal assembly for an industrial gateway according to claim 2, characterized in that, The fixed cylinder (23) has a protrusion (15) fixedly connected to its periphery, and the sliding cylinder (10) has a waist-shaped hole (14) for the protrusion (15) to engage. The protrusion (15) can slide axially within the waist-shaped hole (14) to circumferentially limit the sliding cylinder (10).

10. A high-current quick-connect terminal assembly for an industrial gateway according to claim 1, characterized in that, The arc-extinguishing plate (9) is made of ceramic material, and the sum of the thickness of the arc-extinguishing plate (9) and the wire lug (8) is equal to the longitudinal height of the socket.

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