Fusing integrated gap type surge protection device with remote signaling function

Abstract

According to the fusing integrated gap type surge protection device with the remote signaling function provided by the invention, the fuse assembly and the surge protection device assembly are installed in a detachable plugging manner by arranging the first plugging port and the second plugging port on the same base; and after the first conductive terminal and the second conductive terminal are inserted, the first conductive terminal and the second conductive terminal abut against each other to form electric connection, thereby realizing reliable series connection and ensuring that current sequentially flows through the first conductive terminal and the second conductive terminal. When surge overvoltage occurs in a line, the multi-stage discharge gaps in the surge protection device assembly are broken down and conducted so as to rapidly discharge surge energy; when the surge protection device assembly generates abnormal current or temperature rise due to abnormal surge or faults, the fusing element can be fused in time, and electric connection between the surge protection device assembly and an external circuit is cut off. Besides, a remote signaling module which is electrically connected with or structurally linked with the fusing element is arranged on the base, and a corresponding remote signaling signal is output when the fusing element is fused, so that the working state of the surge protection device is remotely monitored.

Description

Technical Field

[0001] This invention relates to the field of surge protector technology, specifically to a fuse-integrated gap-type surge protector with remote signaling function. Background Technology

[0002] Surge protectors are widely used in power systems, communication systems, and building power distribution systems to quickly dissipate surge energy when surge overvoltages occur due to lightning strikes, power grid operations, etc., thereby protecting the safety of downstream electrical equipment. Existing surge protectors typically come in various forms, including varistor-type, gas discharge tube-type, and gap-type, depending on their core protection components. Among these, gap-type surge protectors are often used in scenarios requiring protection against high-energy surges due to their advantages such as high current carrying capacity, strong impact resistance, and long service life.

[0003] To improve discharge stability, multi-layer graphite gap surge protectors have emerged in the prior art. These protectors form a multi-stage discharge gap structure by stacking multiple layers of graphite electrodes along the current direction and creating electrode gaps between adjacent electrodes. This disperses discharge stress and improves the overall surge energy discharge capability. Furthermore, by placing metal spring pins above the graphite electrodes and connecting them to capacitors, voltage equalization of the capacitors at each stage of the gap can be achieved, improving the consistency and operational stability of the multi-stage gap discharge.

[0004] However, existing multi-layer graphite gap surge protectors still have some shortcomings in practical applications. First, due to the uneven potential distribution of the multi-stage graphite gap electrode plates, premature breakdown or uneven discharge in some gaps can easily occur, affecting the overall protection performance and service life. Second, in the event of abnormal surges or internal faults, if timely overcurrent cutoff measures are lacking, the surge protector itself may be damaged, posing a safety hazard. Finally, in existing technologies, fuses are usually installed separately from the surge protector, resulting in complex wiring, large space occupation, and a lack of remote status monitoring capabilities, leading to low efficiency in equipment maintenance and operation monitoring.

[0005] Therefore, it is necessary to provide a surge protector that can reliably connect the fuse protection and surge protector components while ensuring stable discharge of multi-stage graphite gaps, and has remote signaling function to achieve remote status monitoring, thereby meeting the practical application requirements of modularization, miniaturization, high reliability and intelligent management. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a fuse-integrated gap surge protector with remote signaling function. By integrating the fuse assembly and the multilayer graphite gap surge protector assembly on the same base, and setting a remote signaling module on the base, the functions of fuse protection, surge discharge, and remote status monitoring are integrated, thereby improving the reliability and ease of maintenance of the equipment.

[0007] A fuse-integrated gap surge protector with remote signaling function includes a base and a fuse assembly and a surge protector assembly that are detachably plugged into the base. The base is provided with a first connector for inserting the fuse assembly and a second connector for inserting the surge protector assembly. The first connector has a first conductive terminal on the side facing the second connector, and the second connector has a second conductive terminal on the side facing the first connector. When the fuse assembly is inserted into the first connector and the surge protector assembly is inserted into the second connector, the first conductive terminal abuts against the second conductive terminal, so that the fuse assembly and the surge protector assembly are connected in series. The fuse assembly is plugged into the base via the first connector. The fuse assembly includes a fuse housing, a fuse element disposed within the fuse housing, and lead-out terminals electrically connected to both ends of the fuse element. The lead-out terminals are electrically connected to the first conductive terminal in the connector. The surge protector assembly is plugged into the base via the second connector. The surge protector assembly is a multi-layer graphite gap type surge protector assembly, which includes multiple layers of graphite electrode sheets stacked sequentially along the current direction. An electrode gap is formed between adjacent graphite electrode sheets to form a multi-stage discharge gap structure. When a surge overvoltage occurs in the line, the multi-stage discharge gap is broken down and conducts to discharge surge energy. When the surge protector assembly generates abnormal current or temperature rise due to abnormal surge or fault, the fuse element melts, thereby cutting off the electrical connection between the surge protector assembly and the external circuit. The base is also equipped with a remote signaling module, which includes a remote signaling interface and a remote signaling switch structure that is electrically connected or structurally linked to the fuse element. When the fuse element blows, the electrical state of the remote signaling switch structure changes, causing the remote signaling interface to output a corresponding remote signaling signal, so as to realize remote monitoring of the working status of the surge protector.

[0008] Preferably, the remote signaling module includes a remote signaling interface, a remote signaling switch structure, and a remote signaling circuit board. The remote signaling switch structure is fixedly installed inside the base and electrically connected to the remote signaling interface. The remote signaling circuit board is provided with conductive lines electrically connected to the remote signaling switch structure. The remote signaling switch structure is electrically connected to or structurally linked with the fuse assembly, and can switch its electrical state when the fuse element blows, thereby outputting a remote signal through the remote signaling interface that is different from the state when the fuse element is not blown. Preferably, the remote signaling switch structure is a micro switch, a reed switch, or a spring-loaded switch, comprising an elastic contact assembly and a triggering part. The triggering part is displaced when the fuse element blows to drive the elastic contact to complete the electrical state switching. The triggering part is a push rod, a swing arm, a slider, or a flip plate. The remote signaling module can be restored to its initial state through manual or automatic reset after the fuse assembly is replaced or reconnected, so as to realize the reuse of the remote signaling function.

[0009] Preferably, both the first conductive terminal and the second conductive terminal include a fixing part and a connecting part. The fixing part is detachably disposed in the base. The connecting part has a cross-section of rhombus, square, circular or elliptical. There is a gap between the connecting parts of the first conductive terminal and the second conductive terminal. When the fuse assembly and the surge protector assembly are inserted, the connecting parts of the first conductive terminal and the second conductive terminal approach each other and abut.

[0010] Preferably, both the first and second connectors are configured in pairs, with one pair of the first connectors used to insert the fuse assembly and the other pair of the second connectors used to insert the surge protector assembly.

[0011] Preferably, one of the first plug interfaces has a first conductive terminal on the side facing the second plug interface, and the other first plug interface has a first conductive terminal on the side away from the second plug interface and no first conductive terminal on the side close to the second plug interface; one of the second plug interfaces has a second conductive terminal on the side facing the first plug interface, and the other second plug interface has a second conductive terminal on the side away from the first plug interface and no second conductive terminal on the side close to the first plug interface.

[0012] Preferably, a busbar is provided on the side of the first connector away from the second connector and on the side of the second connector away from the first connector. The busbar includes a vertical connecting portion, which is disposed opposite to the first conductive terminal and the second conductive terminal.

[0013] Preferably, the base includes a detachably connected first socket, a second socket, and a predetermined number of third sockets. A first connecting structure is provided on one side of the first socket and one side of the third socket. A second connecting structure adapted to the first connecting structure is provided on one side of the second socket and the other side of the third socket. A receiving space is provided in the middle of the first socket, the second socket, and the third socket. The first conductive terminal, the second conductive terminal, and the busbar are detachably installed in the receiving space. A receiving cavity is provided on the side of the first socket, the second socket, and the third socket. A wiring terminal is detachably installed in the receiving cavity.

[0014] Preferably, when the first socket is installed, two first plug interface assemblies are provided on the side facing the third socket, and two first plug interface assemblies are provided on the side facing the first socket. When the first socket and the third socket are spliced ​​together, the first plug interface assemblies are spliced ​​together to form the first plug interface. When the second socket is installed, two second plug interface assemblies are provided on the side facing the third socket, and two second plug interface assemblies are provided on the side facing the second socket. When the second socket and the third socket are spliced ​​together, the second plug interface assemblies are spliced ​​together to form the second plug interface.

[0015] Preferably, the first connection structure includes a T-shaped slot and a plug-in portion disposed on the first socket and the third socket. The plug-in portion is open on both the splicing side and the bottom side. The top surface and two opposite sides of the inner side of the plug-in portion are recessed with strip-shaped grooves. The second connection structure includes a T-shaped plug-in post and a strip-shaped plug-in member disposed on the second socket and the third socket. The T-shaped plug-in post is covered with rubber. A snap-fit ​​plate is connected to the end of the strip-shaped plug-in member. Rubber is sleeved on the snap-fit ​​plate.

[0016] Preferably, the fusible element of the fuse assembly is a metal wire or metal strip, which is disposed inside the fuse housing.

[0017] Preferably, the surge protector assembly includes a graphite gap assembly, which comprises multiple layers of graphite electrode sheets stacked sequentially along the current direction. An insulating sheet is provided between adjacent graphite electrode sheets to form and define an electrode gap. A first circuit board electrically connected to the graphite gap assembly is disposed above it. A plurality of metal spring pins are soldered onto the first circuit board, and the metal spring pins elastically abut against the corresponding graphite electrode sheets along the thickness direction. A plurality of capacitors are also electrically connected to the first circuit board, and the capacitors are respectively electrically connected to the corresponding metal spring pins to form a capacitor voltage equalization path for each graphite electrode sheet under surge action, thereby improving the consistency of multi-stage graphite gap discharge and the working stability of the surge protector assembly.

[0018] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a fuse-integrated gap-type surge protector with remote signaling function, comprising a base and a fuse assembly and a surge protector assembly detachably plugged into the base. By providing a first and a second plug-in interface on the same base, the fuse assembly and the surge protector assembly are detachably plugged into the base. After insertion, the first and second conductive terminals abut against each other to form an electrical connection, thus achieving reliable series connection between the fuse assembly and the surge protector assembly, allowing current to flow sequentially through both. When a surge overvoltage occurs in the line, the multi-stage discharge gap in the surge protector assembly breaks down and conducts, rapidly dissipating surge energy. When the surge protector assembly generates abnormal current or temperature rise due to abnormal surge or fault, the fuse element melts promptly, thereby cutting off the electrical connection between the surge protector assembly and the external circuit, achieving effective protection of the surge protector assembly, and improving safety and system reliability. Meanwhile, both the fuse assembly and surge protector assembly adopt a plug-in structure, allowing for easy replacement via plug-and-play when a fault occurs or the lifespan is reached, without the need for disconnection or rewiring. This facilitates maintenance and replacement, improving assembly consistency and modularity. Furthermore, by installing a remote signaling module on the base that is electrically connected to or structurally linked to the fuse element, the electrical state of the remote signaling switch structure changes when the fuse element blows, and a corresponding remote signal is output via the remote signaling interface. This enables remote monitoring of the surge protector's operating status, allowing maintenance personnel to promptly grasp the equipment's operating status and improving system monitorability and maintenance efficiency. Attached Figure Description

[0019] Figure 1 This is a partial structural schematic diagram of the fuse-integrated gap-type surge protector with remote signaling function described in this invention; Figure 2 This is a top view of the integrated fuse gap surge protector with remote signaling function described in this invention. Figure 3 This is a schematic diagram of the structure of the fuse assembly described in this invention; Figure 4 This is a schematic diagram of the surge protector assembly described in this invention; Figure 5 This is a schematic diagram of the connection structure of the first conductive terminal, the second conductive terminal, and the busbar according to the present invention. Figure 6 This is a schematic diagram of the structure of the first conductive terminal, the second conductive terminal, and the busbar described in this invention; Figure 7This is a schematic diagram of the structure of the base described in this invention; Figure 8 This is a schematic diagram of the disassembled structure of the base described in this invention; Figure 9 This is a schematic diagram of the disassembled, bottom-view structure of the base described in this invention.

[0020] in: 1-Base, 2-Fuse assembly, 3-Surge protector assembly, 10-First socket, 20-Second socket, 30-Third socket, 11-T-shaped slot, 12-Plug-in part, 13-T-shaped plug-in post, 14-Strip plug-in part, 15-Snap-in plate, 16-First plug-in interface, 17-Second plug-in interface, 18-First conductive terminal, 19-Second conductive terminal, 110-Bus busbar, 111-Vertical connection part, 21-Fuse housing, 22-Fuse element, 23-Lead-out terminal, 31-Graphite electrode sheet, 32-Insulating sheet, 33-First circuit board, 34-Metal spring pin, 35-Capacitor. Detailed Implementation

[0021] The embodiments described below are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] See Figures 1-9 This embodiment provides a fuse-integrated gap-type surge protector with remote signaling function. Its overall structure includes a base 1 and a fuse assembly 2 and a surge protector assembly 3 that are detachably plugged into the base 1. By integrating the fuse assembly 2 and the surge protector assembly 3 onto the same base 1, they are arranged as a single unit in terms of structure and electrical connection, which facilitates modular installation and compact design.

[0023] Specifically, the base 1 is provided with a first connector 16 for inserting the fuse assembly 2 and a second connector 17 for inserting the surge protector assembly 3. The first connector 16 has a first conductive terminal 18 on the side facing the second connector 17, and the second connector 17 has a second conductive terminal 19 on the side facing the first connector 16. When the fuse assembly 2 is inserted into the first connector 16 and the surge protector assembly 3 is inserted into the second connector 17, the first conductive terminal 18 and the second conductive terminal 19 abut against each other, thereby reliably connecting the fuse assembly 2 and the surge protector assembly 3 in series electrically without the need for additional wiring, ensuring that current flows sequentially through both the fuse assembly 2 and the surge protector assembly 3. Meanwhile, the placement of the first conductive terminal 18 and the second conductive terminal 19 ensures that during assembly, both the fuse assembly 2 and the surge protector assembly 3 must be installed on the base 1 simultaneously to form a complete electrical path. This prevents circuit malfunction or protection failure caused by assembling either component alone, thus improving the installation safety and reliability of the equipment. This design allows for quick and reliable installation and replacement of the fuse assembly 2 and the surge protector assembly 3 without additional wire disconnection or rewiring during insertion and removal, while also ensuring the stability of the series connection and the consistency of the modular structure.

[0024] The fuse assembly 2 is plugged into the base 1 via the first connector 16. The fuse assembly 2 includes a fuse housing 21, a fuse element 22 disposed within the fuse housing 21, and lead-out terminals 23 electrically connected to both ends of the fuse element 22. When the current in the circuit is under normal operating conditions, the fuse element 22 remains in a conductive state; when the current abnormally increases or an overload occurs, the fuse element 22 can melt to cut off the current path.

[0025] The surge protector assembly 3 is plugged into the base 1 via the second connector 17. The surge protector assembly 3 is a multi-layer graphite gap type surge protector assembly 3, comprising multiple layers of graphite electrode sheets 31 stacked sequentially along the current direction, with electrode gaps formed between adjacent graphite electrode sheets 31, thus constituting a multi-stage discharge gap structure. Under normal operating conditions, the multi-stage discharge gaps are in a non-conductive state; when a surge overvoltage occurs in the line, the multi-stage discharge gaps are sequentially broken down and become conductive, thereby achieving rapid discharge of surge energy and protecting downstream circuits and electrical equipment. When the surge protector assembly 3 generates abnormal current or temperature rise due to abnormal surges or faults, the fuse element 22 can melt in time, thereby cutting off the electrical connection between the surge protector assembly 3 and the external circuit, preventing further expansion of the fault.

[0026] In addition, a remote signaling module 4 is also provided on the base 1. The remote signaling module 4 includes a remote signaling interface and a remote signaling switch structure that is electrically connected to or structurally linked with the fuse element 22. The remote signaling switch structure is set to correspond to the working state of the fuse element 22. When the fuse element 22 is in a normal conducting state, the remote signaling switch structure maintains the corresponding initial electrical state; when the fuse element 22 blows, the electrical state of the remote signaling switch structure changes accordingly, and outputs a corresponding remote signaling signal through the remote signaling interface, thereby realizing remote monitoring of the working status of the surge protector and facilitating maintenance personnel to promptly grasp the equipment operation status.

[0027] In this embodiment, the remote signaling module preferably includes the remote signaling interface, the remote signaling switch structure, and the remote signaling circuit board. The remote signaling switch structure is fixedly installed inside the base 1 and can be secured by screws, clips, or embedded rails to enhance mechanical stability and ensure that the switch structure is not easily loosened under vibration or impact. The remote signaling switch structure is electrically connected to the remote signaling interface via wires or welding. The remote signaling circuit board is provided with conductive lines electrically connected to the remote signaling switch structure. The conductive lines can use multilayer copper-clad laminates or flexible circuit boards for wiring to improve the durability and anti-interference capability of the lines. In this embodiment, the remote signaling switch structure is electrically connected to or structurally linked with the fuse assembly 2. When the fuse element 22 blows, the trigger part moves in a predetermined direction, driving the elastic contact to complete the electrical state switching, and then outputs a remote signal different from the non-blown state of the fuse element 22 through the remote signaling interface to realize remote monitoring of the fuse status.

[0028] Furthermore, in this embodiment, the remote signaling switch structure is preferably a micro switch, a reed switch, or a spring-loaded switch, which includes an elastic contact assembly and a triggering part. The triggering part displaces when the fusible element 22 melts, pushing the elastic contact to complete the electrical state switching. The triggering part can be designed as a push rod, a swing arm, a slider, or a flip plate, and a miniature limit block or guide groove can be provided on the triggering part to make the triggering motion path controllable and accurately positioned, ensuring stable and reliable contact action. The elastic contact assembly can adopt a double-contact or cross-contact structure to enhance the redundancy and reliability of contact contact, while reducing contact resistance fluctuations and improving the stability of signal output.

[0029] To enable the reuse of the remote signaling function, a reset structure is added to the remote signaling module in this embodiment. The reset structure can be a mechanical reset rod, a spring reset device, or an electromagnetic reset device. When fuse assembly 2 is replaced or reconnected, the trigger part is returned to its initial position by manually operating the reset rod or spring, and the elastic contacts return to their original electrical state, thus restoring the remote signaling module to normal operation. Furthermore, for ease of on-site operation and monitoring, a visual indicator structure, such as a raised indicator block, color markings, or a transparent window, can be installed on the trigger part of the remote signaling module, allowing for visual assessment of the fuse status and further improving maintenance efficiency and safety.

[0030] In this embodiment, the remote signaling module is also equipped with a guiding and protective structure. Specifically, a trigger guide groove is provided inside the base 1 to prevent the trigger from shifting during the melting or resetting process. At the same time, an insulating cover or dust cover is provided outside the remote signaling switch structure to protect the switch structure from dust, moisture and debris, thereby improving the overall reliability and service life.

[0031] Specifically, in this embodiment, both the first conductive terminal 18 and the second conductive terminal 19 include a fixing part and a connecting part. The fixing part can be detachably installed in the base 1 by means of screws, clips, or embedded slots, so that it can be easily disassembled and installed when replacement or maintenance is required. The cross-section of the connecting part can be prismatic, square, circular, or elliptical, with a hollow structure in the middle, so that it can undergo a certain elastic deformation when the fuse assembly 2 or surge protector assembly 3 is inserted, so as to achieve reliable electrical contact. A certain gap is maintained between the connecting parts of the first conductive terminal 18 and the second conductive terminal 19. This gap structurally ensures the insulation safety when not inserted, and provides a buffer space for inserting the fuse assembly 2 and surge protector assembly 3, so as to reduce mechanical wear and deformation of the conductive terminals during insertion and removal operations.

[0032] When the fuse assembly 2 and the surge protector assembly 3 are inserted into their respective connectors, the connection portions of the first conductive terminal 18 and the second conductive terminal 19 approach and abut against each other under elastic action, forming a reliable electrical contact. This elastic contact not only ensures that the current can flow smoothly through the fuse assembly 2 and the surge protector assembly 3 to achieve series protection, but also has a certain degree of self-adaptability, capable of adapting to slight dimensional deviations during insertion and removal, thus improving the overall reliability and durability of the contact. Furthermore, to further enhance contact stability, silver or copper plating can be applied to the surface of the connection portion to reduce contact resistance and prevent oxidation or corrosion during long-term use.

[0033] In this embodiment, the first conductive terminal 18 and the second conductive terminal 19 can also be designed as spring-type or sheet-like elastic structures, so that the connection part can maintain a certain elastic pressure during insertion and removal, thereby ensuring that a good electrical connection can still be maintained under various working conditions, while reducing the impact of contact vibration or impact on conductivity.

[0034] Preferably, both the first connector 16 and the second connector 17 are configured in pairs, with one pair of first connectors 16 used to insert the fuse assembly 2 and the other pair of second connectors 17 used to insert the surge protector assembly 3. Specifically, the fuse assembly 2 includes two leads 23, one of which is electrically connected to a first conductive terminal 18 of the first connector 16, and the other is connected to the vertical connection portion 111 of the busbar 110 next to the first connector 16, thereby ensuring a reliable connection between the two ends of the fuse assembly 2 and the circuit; the surge protector assembly 3 also includes two leads 23, one of which is electrically connected to a second conductive terminal 19 of the second connector 17, and the other is connected to the vertical connection portion 111 of the busbar 110 next to the second connector 17, ensuring that the current of the surge protector assembly 3 can pass smoothly through the multi-stage discharge gap structure.

[0035] Preferably, one of the first connectors 16 has a first conductive terminal 18 on the side facing the second connector 17, and the other first connector 16 has a first conductive terminal 18 on the side away from the second connector 17, but no first conductive terminal 18 on the side closest to the second connector 17; one of the second connectors 17 has a second conductive terminal 19 on the side facing the first connector 16, and the other second connector 17 has a second conductive terminal 19 on the side away from the first connector 16, but no second conductive terminal 19 on the side closest to the first connector 16. This arrangement allows the busbar 110, the fuse assembly 2, and the surge protector assembly 3 to be connected in series.

[0036] Preferably, a busbar 110 is provided on the side of the first connector 16 away from the second connector 17 and on the side of the second connector 17 away from the first connector 16. The busbar 110 includes a vertical connecting portion 111, which is disposed opposite to the first conductive terminal 18 and the second conductive terminal 19. In the specific circuit connection, the current first passes through the busbar 110 and connects to the corresponding first conductive terminal 18. Then, the current is transmitted from the first conductive terminal 18 to the other first conductive terminal 18 through the fuse assembly 2. Next, the current is transmitted through the first conductive terminal 18 to the corresponding second conductive terminal 19. Then, the current is transmitted through the surge protector assembly 3 to the other second conductive terminal 19 of the second connector 17. Finally, the current flows back to the busbar 110 on the other side, thus forming a complete series circuit.

[0037] Preferably, the base 1 includes a detachably connected first socket 10, a second socket 20, and a predetermined number of third sockets 30. A first connecting structure is provided on one side of the first socket 10 and one side of the third socket 30, and a second connecting structure adapted to the first connecting structure is provided on one side of the second socket 20 and the other side of the third socket 30. Specifically, a receiving space is provided in the middle of the first socket 10, the second socket 20, and the third socket 30. A first conductive terminal 18, a second conductive terminal 19, and a busbar 110 are detachably installed in the receiving space to ensure a stable and reliable electrical connection between the fuse assembly 2 and the surge protector assembly 3. Receiving cavities are provided on the sides of the first socket 10, the second socket 20, and the third socket 30. Wiring terminals are detachably installed in the receiving cavities, providing a convenient interface for external circuit access and facilitating maintenance and replacement.

[0038] Furthermore, when the first socket 10 is installed, two first plug-in interface 16 assemblies are provided on the side facing the third socket 30, and two first plug-in interface 16 assemblies are also provided on the side facing the first socket 10. When the first socket 10 and the third socket 30 are spliced ​​together, the first plug-in interface 16 assemblies are spliced ​​together to form a complete first plug-in interface 16. Similarly, when the second socket 20 is installed, two second plug-in interface 17 assemblies are provided on the side facing the third socket 30, and two second plug-in interface 17 assemblies are provided on the side facing the second socket 20. When the second socket 20 and the third socket 30 are spliced ​​together, the second plug-in interface 17 assemblies are spliced ​​together to form a complete second plug-in interface 17. Through this multi-component splicing structure design to form plug-in interfaces, the base 1 can be assembled and installed. When multiple fuse assemblies 2 and multiple surge protector assemblies 3 need to be installed, only a few more third sockets 30 need to be spliced ​​together in the middle.

[0039] Preferably, the first connecting structure includes a T-shaped slot 11 and a plug-in portion 12 disposed on the first socket 10 and the third socket 30. The plug-in portion 12 is open on both the splicing side and the bottom side. The top surface and two opposite sides of the inner side of the plug-in portion 12 are recessed with strip-shaped grooves. The second connecting structure includes a T-shaped plug-in post and a strip-shaped plug-in member disposed on the second socket 20 and the third socket 30. The T-shaped plug-in post is covered with rubber. A snap-fit ​​plate is connected to the end of the strip-shaped plug-in member 14, and rubber is fitted on the snap-fit ​​plate. When the base 1 is spliced, the T-shaped plug-in posts 13 on both sides are inserted into the T-shaped slot 11 from the bottom side. At the same time, the rubber covering the T-shaped plug-in posts 13 ensures that the T-shaped plug-in posts 13 can be firmly installed in the T-shaped slot 11, avoiding loosening due to vibration or external force. As the T-shaped plug 13 is continuously inserted upward into the T-shaped slot 11, the strip-shaped plug 14 enters the plug part 12 from the opening on one side of the bottom of the plug part 12. As the T-shaped plug 13 rises, the strip-shaped plug 14 also rises and gets into the plug part 12. When the T-shaped plug 13 is fully inserted into the T-shaped slot 11, the strip-shaped plug 14 is fully inserted into the plug part 12. At this time, the snap-fit ​​plate 15 provided at the end of the strip-shaped plug 14 snaps into the strip groove of the plug part 12. The rubber at the snap-fit ​​plate 15 ensures that the snap-fit ​​plate 15 and the strip groove are tightly connected, and the splicing is completed.

[0040] Preferably, the fuse element 22 of the fuse assembly 2 is a metal wire or metal strip, disposed inside the fuse housing 21. The material of the metal wire or metal strip can be a metal with good conductivity and stable fusing characteristics, such as copper, silver, aluminum, or nickel alloy, to ensure that it can quickly and reliably fuse under the action of overcurrent or abnormal current. Preferably, the surge protector assembly 3 includes a graphite gap assembly, in which multiple layers of graphite electrode sheets 31 are stacked sequentially along the current direction. An insulating sheet 32 ​​is provided between adjacent graphite electrode sheets 31 to form and define the electrode gap, thus constituting a multi-stage discharge gap structure. In this structure, each stage of the gap can break down and conduct sequentially or simultaneously, rapidly dissipating surge energy and dispersing discharge stress, preventing premature breakdown of local gaps that could damage the device. A first circuit board 33 electrically connected to the graphite gap assembly is disposed above it. Several metal spring pins 34 are soldered onto the first circuit board 33, and these metal spring pins 34 elastically abut against the corresponding graphite electrode sheets 31 along their thickness direction. The metal spring pins 34 provide a certain pre-pressure during installation to ensure the reliability of the elastic abutment, while allowing good electrical contact under thermal expansion or mechanical vibration. The material of the metal spring pins 34 can be an alloy with good conductivity and stable elasticity, such as phosphor bronze or beryllium copper, to balance conductivity and mechanical durability. Meanwhile, several capacitors 35 are electrically connected to the first circuit board 33, each capacitor 35 being electrically connected to a corresponding metal spring pin 34. The function of the capacitors 35 is to form a voltage equalization path. When a surge voltage is applied to the graphite gap assembly, the capacitors 35 can evenly distribute the voltage of each level of graphite electrode sheet 31, thereby improving the discharge consistency and overall working stability of the multi-stage discharge gap. Therefore, the graphite gap assembly described in this application not only achieves efficient surge energy discharge but also takes into account the voltage equalization of the multi-stage gap, reliable electrical contact, and structural stability, thereby significantly improving the working reliability and service life of the surge protector assembly 3. In addition, this structure facilitates modular assembly, making it easier to maintain or replace the graphite gap assembly, improving assembly efficiency and on-site maintainability.

[0041] This invention provides a fuse-integrated gap-type surge protector with remote signaling function, comprising a base 1 and a fuse assembly 2 and a surge protector assembly 3 detachably plugged into the base 1. By providing a first plug-in interface 16 and a second plug-in interface 17 on the same base 1, the fuse assembly 2 and the surge protector assembly 3 are detachably plugged into the base 1. After insertion, the first conductive terminal 18 and the second conductive terminal 19 abut against each other to form an electrical connection, thereby achieving a reliable series connection between the fuse assembly 2 and the surge protector assembly 3 in structure, allowing current to flow sequentially through the fuse assembly 2 and the surge protector assembly 3. When a surge overvoltage occurs in the line, the multi-stage discharge gap in surge protector assembly 3 breaks down and conducts to quickly discharge surge energy. When surge protector assembly 3 generates abnormal current or temperature rise due to abnormal surge or fault, fuse element 22 can melt in time, thereby cutting off the electrical connection between surge protector assembly 3 and external circuit, achieving effective protection of surge protector assembly 3, and improving safety and system reliability. Simultaneously, both fuse assembly 2 and surge protector assembly 3 adopt a plug-in structure, allowing for replacement by plugging and unplugging when a fault occurs or the service life is reached, without the need for disconnection or rewiring. This facilitates maintenance and replacement, improving assembly consistency and modularity. Furthermore, by setting a remote signaling module on the base 1 that is electrically connected to or structurally linked to fuse element 22, when fuse element 22 melts, the electrical state of the remote signaling switch structure changes accordingly, and a corresponding remote signaling signal is output via the remote signaling interface. This enables remote monitoring of the surge protector's operating status, allowing maintenance personnel to promptly grasp the equipment's operating status and improving system monitoring and maintenance efficiency.

[0042] The above-disclosed embodiments are merely some preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A fuse-integrated gap-type surge protector with remote signaling function, characterized in that: It includes a base and a fuse assembly and a surge protector assembly that are detachably plugged into the base; The base is provided with a first connector for inserting the fuse assembly and a second connector for inserting the surge protector assembly. The first connector has a first conductive terminal on the side facing the second connector, and the second connector has a second conductive terminal on the side facing the first connector. When the fuse assembly is inserted into the first connector and the surge protector assembly is inserted into the second connector, the first conductive terminal abuts against the second conductive terminal, so that the fuse assembly and the surge protector assembly are connected in series. The fuse assembly is plugged into and installed on the base through the first plug-in interface. The fuse assembly includes a fuse housing, a fuse element disposed in the fuse housing, and lead-out terminals electrically connected to both ends of the fuse element. The surge protector assembly is plugged into the base via the second connector. The surge protector assembly is a multi-layer graphite gap type surge protector assembly, which includes multiple layers of graphite electrode sheets stacked sequentially along the current direction. An electrode gap is formed between adjacent graphite electrode sheets to form a multi-stage discharge gap structure. When a surge overvoltage occurs in the line, the multi-stage discharge gap is broken down and connected to discharge the surge energy. When the surge protector assembly generates abnormal current or temperature rise due to abnormal surge or fault, the fuse element melts, thereby cutting off the electrical connection between the surge protector assembly and the external circuit. The base is also equipped with a remote signaling module, which includes a remote signaling interface and a remote signaling switch structure that is electrically connected or structurally linked to the fuse element. When the fuse element blows, the electrical state of the remote signaling switch structure changes, causing the remote signaling interface to output a corresponding remote signaling signal, so as to realize remote monitoring of the working status of the surge protector.

2. The fuse-integrated gap-type surge protector with remote signaling function as described in claim 1, characterized in that, The remote signaling module includes a remote signaling interface, a remote signaling switch structure, and a remote signaling circuit board. The remote signaling switch structure is fixedly installed inside the base and is electrically connected to the remote signaling interface. The remote signaling circuit board is provided with conductive lines that are electrically connected to the remote signaling switch structure. The remote signaling switch structure is electrically connected or structurally linked to the fuse assembly, and can switch electrical states when the fuse element blows, thereby outputting a remote signal through the remote signaling interface that is different from the state when the fuse element is not blown.

3. The fuse-integrated gap-type surge protector with remote signaling function as described in claim 2, characterized in that, The remote signaling switch structure is a micro switch, reed switch or spring switch, including an elastic contact assembly and a trigger part. The trigger part is displaced when the fuse element melts to drive the elastic contact to complete the electrical state switching. The trigger part is a push rod, swing arm, slider or flip plate.

4. The fuse-integrated gap-type surge protector with remote signaling function as described in claim 2, characterized in that, Both the first conductive terminal and the second conductive terminal include a fixing part and a connecting part. The fixing part is detachably disposed in the base. The connecting part has a cross-section of rhombus, square, circular or elliptical. There is a gap between the connecting parts of the first conductive terminal and the second conductive terminal. When the fuse assembly and the surge protector assembly are inserted, the connecting parts of the first conductive terminal and the second conductive terminal approach each other and abut.

5. The fuse-integrated gap-type surge protector with remote signaling function as described in claim 1, characterized in that, Both the first and second connectors are configured in pairs, with one pair of the first connectors used to insert the fuse assembly and the other pair of the second connectors used to insert the surge protector assembly.

6. The fuse-integrated gap-type surge protector with remote signaling function as described in claim 5, characterized in that, One of the first plug interfaces has a first conductive terminal on the side facing the second plug interface, and the other first plug interface has a first conductive terminal on the side away from the second plug interface and no first conductive terminal on the side close to the second plug interface; one of the second plug interfaces has a second conductive terminal on the side facing the first plug interface, and the other second plug interface has a second conductive terminal on the side away from the first plug interface and no second conductive terminal on the side close to the first plug interface.

7. The fuse-integrated gap-type surge protector with remote signaling function as described in claim 6, characterized in that, A busbar is provided on the side of the first connector away from the second connector and on the side of the second connector away from the first connector. The busbar includes a vertical connecting part, which is disposed opposite to the first conductive terminal and the second conductive terminal.

8. The fuse-integrated gap-type surge protector with remote signaling function as described in claim 1, characterized in that, The base includes a detachably connected first socket, a second socket, and a predetermined number of third sockets. A first connecting structure is provided on one side of the first socket and one side of the third socket. A second connecting structure adapted to the first connecting structure is provided on one side of the second socket and the other side of the third socket. A receiving space is provided in the middle of the first socket, the second socket, and the third socket. The first conductive terminal, the second conductive terminal, and the busbar are detachably installed in the receiving space. A receiving cavity is provided on the side of the first socket, the second socket, and the third socket. A wiring terminal is detachably installed in the receiving cavity.

9. The fuse-integrated gap-type surge protector with remote signaling function as described in claim 8, characterized in that, When the first socket is installed, it has two first plug interface assemblies on the side facing the third socket, and the third socket has two first plug interface assemblies on the side facing the first socket. When the first socket and the third socket are spliced ​​together, the first plug interface assemblies are spliced ​​together to form the first plug interface. When the second socket is installed, it has two second plug interface assemblies on the side facing the third socket, and the third socket has two second plug interface assemblies on the side facing the second socket. When the second socket and the third socket are spliced ​​together, the second plug interface assemblies are spliced ​​together to form the second plug interface.

10. The fuse-integrated gap-type surge protector with remote signaling function as described in claim 9, characterized in that, The first connection structure includes a T-shaped slot and a plug-in portion disposed on the first socket and the third socket. The plug-in portion is open on both the splicing side and the bottom side. The top surface and two opposite sides of the inner side of the plug-in portion are recessed with strip-shaped grooves. The second connection structure includes a T-shaped plug-in post and a strip-shaped plug-in member disposed on the second socket and the third socket. The T-shaped plug-in post is covered with rubber. A snap-fit ​​plate is connected to the end of the strip-shaped plug-in member. Rubber is sleeved on the snap-fit ​​plate.

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