Surge protection module and surge protection device

Abstract

The present invention discloses a surge protection module and a surge protection device, wherein the surge protection module comprises: a carrier, an electrode through hole is provided on the mounting plate of the carrier; a varistor, on the first side of the mounting plate, the varistor has a first electrode and a second electrode; an electrode connector, mounted on the second side of the mounting plate, one end of the electrode connector is welded to the second electrode through the electrode through hole; a tripping mechanism, comprising a rotating body and a potential storage spring, the rotating body is provided with an arc isolation plate; when the electrode connector and the second electrode are in a welding state, the rotating body is restricted to a first position, the arc isolation plate is located on a side of the rotating body facing the electrode through hole and corresponds to the electrode through hole; when the solder between the electrode connector and the second electrode melts, the potential storage spring drives the rotating body to rotate, and the arc isolation plate rotates to the electrode through hole and between the electrode connector and the second electrode. The technical solution provided by the present invention can effectively avoid the problem of solder adhesion and possible arcing during tripping.

Description

Technical Field

[0001] The present invention relates to the technical field of overvoltage and overcurrent protection, and in particular to a surge protection module and a surge protection device. Background Art

[0002] Lightning is one of the top ten natural disasters. With the advancement of technology, equipment is becoming more and more intelligent, more and more integrated, and more and more sensitive to instantaneous overvoltage caused by lightning - surges. In addition, the start and stop of high-power equipment will also generate surges. Surge protectors (or surge protection devices) can prevent surges from damaging equipment and are widely used in communications, construction, rail transit, electricity, new energy, petrochemical and other industries. When a spike current or voltage is generated in an electrical circuit due to lightning strikes or external interference, the surge protector can be turned on in a very short time, discharge current, and limit the voltage to a lower level, thereby preventing the surge from damaging other equipment in the circuit.

[0003] The commonly used component in the surge protector for power distribution system is varistor. Under normal working condition, varistor has very large resistance, which is equivalent to the open circuit state. When the voltage in the circuit exceeds the predetermined value, its resistance drops sharply and it is in the on state, which can discharge a large amount of current and limit the overvoltage level.

[0004] However, after long-term use, the varistor will gradually age, the leakage current will gradually increase, the thermal balance will be destroyed, and the product temperature will continue to rise. In order to prevent the varistor from causing a fire accident due to overheating, a thermal protection tripping device is usually set in the surge protector to disconnect the varistor from the circuit when the temperature rises. After the varistor is disconnected from the circuit, the surge protector will fail and will lose its protective effect on the equipment. The failed surge protector is equipped with a status indicator to prompt maintenance personnel to replace it in time. In some unattended occasions, it is also necessary to design a remote signaling device to realize remote indication of the failure status of the surge protector.

[0005] At present, the existing surge protectors have complex internal structures, and after the thermal protection tripping device disconnects the varistor from the circuit, it is easy to cause solder adhesion problems and arcs, which poses certain risks. Summary of the invention

[0006] The purpose of the present invention is to solve the problem of solder adhesion and arcing after the current surge protector is tripped.

[0007] In order to achieve the above object, the present invention provides a surge protection module, the surge protection module comprising:

[0008] A carrier frame, the carrier frame comprising a mounting plate, the mounting plate being provided with electrode vias penetrating through two sides;

[0009] A varistor, the varistor being mounted on a first side of the mounting plate, the varistor having a first electrode and a second electrode, the first electrode being provided with a first pin for plugging in and located at the bottom end of the carrier;

[0010] An electrode connector, the electrode connector being mounted on the second side of the mounting plate, one end of the electrode connector being welded to the second electrode of the varistor through the electrode via, and the other end of the electrode connector being provided with a second pin for plugging in at the bottom end of the carrier;

[0011] A tripping mechanism, the tripping mechanism comprising a rotating body and a potential storage spring, one end of the rotating body being rotatably mounted on the second side of the mounting plate via a rotating shaft, an arc isolation plate being arranged on the rotating body at a position away from the rotating shaft; wherein when the electrode connector and the second electrode are in a welding state, the rotating body is restricted to a first position close to the bottom end of the carrier, the arc isolation plate is located on a side of the rotating body facing the electrode through hole and corresponding to the electrode through hole, and the potential storage spring is arranged between the rotating body and the carrier and is in a compressed or stretched potential storage state;

[0012] When the solder between the electrode connector and the second electrode melts, the potential storage spring drives the rotating body to rotate to the second position in the direction away from the bottom end of the supporting frame through elastic force. In the second position, the arc isolation plate rotates to the electrode through hole and between the electrode connector and the second electrode.

[0013] Preferably, the potential storage spring is on the side of the rotating body away from the bottom end of the supporting frame, and when the electrode connector and the second electrode are in a welding state, the potential storage spring is in a stretched state, and when the rotating body rotates in a direction away from the bottom end of the supporting frame, the potential storage spring contracts.

[0014] Preferably, a receiving groove for receiving the potential-accumulating spring is provided between the rotating shaft and the arc isolation plate, a first spring connecting portion is provided on the bearing frame, and a second spring connecting portion is provided on the rotating body near the receiving groove;

[0015] One end of the accumulating spring is connected to the first spring connecting part, and the other end is connected to the second spring connecting part, and the part of the accumulating spring close to the second spring connecting part is located in the accommodating groove, and the accommodating groove limits the accumulating spring to bend toward the rotating shaft.

[0016] Preferably, the surge protection module further comprises a housing, and a status display hole is provided at the top of the housing;

[0017] The carrier is provided with a first state indicator, and when the rotating body is located at the first position, the state display hole displays the first state indicator;

[0018] The rotating body is provided with a second state indicating portion, and when the rotating body rotates to the second position, the state display hole displays the second state indicating portion.

[0019] Preferably, the second state indicator is arranged on the outer side of the arc isolation plate in the radial direction, and the second state indicator extends out of the arc isolation plate along an arc to form an arc strip bent toward the rotating shaft;

[0020] There is a gap between the first state indicating portion and the state display hole. When the rotating body rotates to the second position, the second state indicating portion rotates to enter the gap and corresponds to the state display hole.

[0021] Preferably, the arc isolation plate has an inner arc edge bent toward the rotating shaft and an outer arc edge farther from the rotating shaft than the inner arc edge.

[0022] Preferably, an arc-shaped limiting groove is provided on the rotating body, and the electrode connecting member includes an arc-shaped portion located in the arc-shaped limiting groove, and during the rotation of the rotating body, the arc-shaped portion moves along the arc-shaped limiting groove relative to the rotating body;

[0023] Wherein, the two side edges of the arc-shaped limiting groove are respectively extended from the inner arc edge and the outer arc edge of the arc isolation plate.

[0024] Preferably, a boss protruding toward the electrode via hole is formed on the second electrode of the varistor, and one end of the electrode connector welded to the varistor is a sheet-like body, which is welded to the surface of the boss through the electrode via hole.

[0025] According to another aspect of the present invention, there is further provided a surge protection device, the surge protection device comprising a base and the surge protection module as described above mounted on the base;

[0026] Wherein, the base is provided with sockets corresponding to the first pin and the second pin respectively and used for electrically connecting to the circuit, and the first pin and the second pin of the surge protection module are correspondingly inserted into the sockets;

[0027] A remote signaling mechanism is also provided on the base, and the remote signaling mechanism is configured to be linked with the tripping mechanism. When the rotating body is in the first position, the remote signaling mechanism indicates a first state signal, and when the rotating body is in the second position, the remote signaling mechanism indicates a second state signal.

[0028] In the technical solution provided by the present invention, the tripping mechanism effectively blocks the arc that may occur between the electrode of the varistor and the electrode connector, avoids the possible solder adhesion problem, and the tripping is complete. In addition, the tripping mechanism provided by the present invention has a simple and compact structure, which is not only conducive to reducing the volume of the surge protection module, but also conducive to reducing the production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a structural schematic diagram of a surge protection module according to an embodiment of the present invention (the rotating body in the tripping mechanism is in the first position);

[0030] Figure 2 is another structural schematic diagram of the surge protection module (the rotating body in the tripping mechanism is in the second position);

[0031] Figure 3 It is a structural schematic diagram of the carrier frame viewed from one side;

[0032] Figure 4 is a schematic diagram of the structure of the carrier frame viewed from the other side;

[0033] Figure 5 It is a schematic diagram of the structure of the rotating body;

[0034] Figure 6 is a schematic diagram of the structure of the electrode connector;

[0035] Figure 7 This is a schematic diagram of the structure of a varistor viewed from one side;

[0036] Figure 8 This is a schematic diagram of the structure of the varistor viewed from the other side;

[0037] Fig. 9 It is a schematic diagram of the structure in which the varistor is installed on the carrier;

[0038] Fig.10 is a schematic diagram of the structure of the surge protection module viewed from the outside of the housing;

[0039] Fig.11 is a schematic diagram of the structure of the base;

[0040] Fig.12 A schematic diagram of the connection between the surge protection module and the base;

[0041] Fig.13 It is a structural schematic diagram of the base in a separated state;

[0042] Fig.14 This is a schematic diagram of the structure of the remote signaling mechanism installed in the base;

[0043] Fig.15This is a schematic diagram of the structure of the remote signaling mechanism;

[0044] Fig.16 It is a schematic diagram of the cutaway structure of the surge protection device (in normal working state);

[0045] Fig.17 It is a schematic diagram of the cutaway structure of a surge protection device (in a failed state);

[0046] Fig.18 is a schematic diagram of a surge protection device with four surge protection modules installed on a base;

[0047] Fig.19 The figure is a schematic diagram of the installation structure of the remote signaling mechanism corresponding to four surge protection modules installed on the base.

[0048] Description of reference numerals:

[0049] 1-surge protection module; 11-housing; 111-status display hole; 112-clip; 12-carrying frame; 121-mounting plate; 1211-electrode through hole; 122-rotating shaft; 123-first spring connection part; 124-first state indicator; 125-positioning column; 126-through hole; 127-first support part; 128-second support part; 129-error-proofing pin; 13-varistor; 131-first electrode; 1311-first pin; 132-second electrode; 1321-boss; 14-electrode connector; 141-second pin; 1411-slot; 142-welding end; 143-positioning groove; 15-rotating body; 151-limiting surface; 152-second state indicator State indicating part; 153-shaft mounting hole; 154-arc isolation plate; 1541-inner arc edge; 1542-outer arc edge; 155-accommodating groove; 156-second spring connecting part; 157-arc strip; 16-potential spring; 2-base; 21-upper cover; 211-opening; 212-wiring hole; 213-error prevention jack; 22-installation body; 23-micro switch; 24-linked rocker; 241-touch part; 242-force-bearing part; 243-shaft; 25-transmission member; 251-middle part; 252-first column; 253-second column; 26-spring; 27-first terminal block; 28-second terminal block; 29-pressing frame; 3-remote signal terminal seat; 4-remote signal connection terminal. DETAILED DESCRIPTION

[0050] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present disclosure will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0051] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known structures, methods, devices, implementations, materials or operations are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0052] For ease of description, spatially relative terms such as "upper", "lower", "left", "right", etc. may be used herein to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the elements described as being "under" other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can also be positioned in other ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used here can be interpreted accordingly.

[0053] The present invention provides a surge protection module, such as Figure 1 and Figure 2 As shown, the surge protection module 1 includes:

[0054] A carrier frame 12, the carrier frame 12 comprising a mounting plate 121, the mounting plate 121 being provided with electrode vias 1211 penetrating through two sides;

[0055] A varistor 13, wherein the varistor 13 is mounted on a first side of the mounting plate 121, and the varistor 13 has a first electrode 131 and a second electrode 132, wherein the first electrode 131 is provided with a first plug pin 1311 located at the bottom end of the carrier 12 for plugging;

[0056] The electrode connector 14 is installed on the second side of the mounting plate 211, one end of the electrode connector 14 is welded to the second electrode 132 of the varistor 13 through the electrode via 1211, and the other end of the electrode connector 14 is provided with a second pin 141 for plugging in at the bottom end of the carrier 12.

[0057] The tripping mechanism includes a rotating body 15 and a potential storage spring 16. One end of the rotating body 15 is rotatably mounted on the second side of the mounting plate 211 through a rotating shaft 122. An arc isolation plate 154 is provided on the rotating body 15 at a position away from the rotating shaft 122. Figure 5 ; Wherein, when the electrode connector 14 and the second electrode 132 are in a welding state, the rotating body 15 is restricted to a first position close to the bottom end of the supporting frame 12, the arc isolation plate 154 is located on the side of the rotating body 15 facing the electrode through hole 1211 and is arranged corresponding to the electrode through hole 1211, and the potential storage spring 16 is arranged between the rotating body 15 and the supporting frame 12 and is in a compressed or stretched potential storage state;

[0058] When the solder between the electrode connector 14 and the second electrode 132 melts, the potential storage spring 16 drives the rotating body 15 to rotate to the second position in the direction away from the bottom end of the supporting frame 12 through elastic force. In the second position, the arc isolation plate 154 rotates to the electrode through-hole 1211 and between the electrode connector 14 and the second electrode 132.

[0059] In the technical solution provided by the present invention, when the temperature rises, the welding between the electrode connector 14 and the electrode of the varistor 13 is disconnected, and the tripping mechanism can effectively block the arc that may occur between the second electrode 132 of the varistor and the electrode connector 14 through the arc isolation plate 154 provided on the rotating body 15, avoiding the possible solder adhesion problem, and making the tripping complete. In addition, the arrangement of the rotating body 15 in the present invention can block the arc by rotating a small angle when tripping, which can effectively increase the electrical distance between the second electrode 132 and the electrode connector 14.

[0060] The tripping mechanism provided by the present invention has a simple and compact structure, which is not only beneficial to reducing the volume of the surge protection module, but also beneficial to reducing the production cycle.

[0061] The surge protection module provided by the present invention is described in detail below according to a specific implementation manner.

[0062] In a preferred embodiment, the specific structure of the carrier 12 is as follows: Figure 3 and Figure 4 As shown, the structure of the rotating body 15 is as follows Figure 5 As shown, the structure of the electrode connector 14 is as follows Figure 6 As shown, the structure of the varistor 13 is as follows Figure 7 and Figure 8 shown.

[0063] in, Figure 3 A first side of the carrier 12 is shown, Figure 4 A second side of the carrier 12 is shown. Fig. 9 A state in which the varistor 13 is mounted on a first side of the carrier 12 is shown.

[0064] A first electrode 131 is provided on one side of the varistor 13, and the first electrode 131 itself extends to form a first pin 1311; a second electrode 132 is provided on the other side of the varistor 13, and the second electrode 132 is installed toward the mounting board 121, wherein a boss 1321 protruding toward the electrode via 121 is formed on the second electrode 132.

[0065] The electrode connector 14 is mounted on the second side of the carrier 12. One end of the electrode connector 14 forms a welding end 142 for welding with the second electrode 132. The welding end 142 is in the form of a sheet and is welded to the surface of the boss 1321 of the second electrode 132 at the electrode via 1211. The welding can be made thinner by welding, which is beneficial to reducing the thickness of the surge protection module. The other end of the electrode connector 14 is formed as a second plug pin 141 for plugging. An opening is provided on the welding end 142 of the electrode connector 14, which is beneficial to storing solder during welding.

[0066] In order to position the electrode connector 14 relative to the carrier 12, a positioning column 125 is provided on one of the electrode connector 14 and the carrier 12, and a positioning groove 143 is provided on the other to cooperate with the positioning column 125 for positioning. In this embodiment, the positioning column 125 is provided on the carrier 12, and the positioning groove 143 is provided on the electrode connector 14. After the electrode connector 14 and the varistor 13 are welded, the electrode connector 14 is positioned on the carrier 12 through the cooperation of the positioning groove 143 and the positioning column 125.

[0067] In this embodiment, the first pin 1311 is extended and bent from the sheet-shaped first electrode 131, and the first electrode 131 is made of a plate material with elasticity, so that the first pin 1311 has a certain elasticity relative to the carrier 12 for easy insertion. Figure 6 As mentioned above, the second pin 141 of the electrode connector 14 is also formed by extending and bending at one end of the sheet-shaped electrode connector 14 . The second pin 141 also has a certain elasticity relative to the supporting frame 12 , so as to facilitate plugging.

[0068] Preferably, the first plug pin 1311 and the second plug pin 141 are bent in a direction away from the terminal end to form a slot (refer to Figure 6 The first support 127 and the second support 128 are provided on the carrier 12 (refer to Figure 3 ), the first support body 127 is inserted into the slot of the first pin 1311, and the second support body 128 is inserted into the slot of the second pin 141, so as to increase the stability of the first pin 1311 and the second pin 141 when they are plugged in.

[0069] On the second side of the carrier 12, as shown in FIG. Figure 3 As shown, a shaft 122 is provided on the mounting plate 121, and the shaft 122 is closer to the bottom end of the carrier 12 than the electrode via 1211. In the present application, one end of the carrier 12 having the first pin 1311 and the second pin 141 is called the bottom end, and the other end opposite thereto is called the top end.

[0070] A shaft mounting hole 153 is provided on the rotating member 15, and the rotating member 15 is rotatably mounted on the shaft 122 through the shaft mounting hole 153. An arc isolation plate 154 is provided on the rotating body 15 at a position away from the shaft 122, and the arc isolation plate 154 is located on the side of the rotating body 15 away from the bottom end of the supporting frame 12; in this way, when the rotating body 15 is restricted in the first position close to the bottom end of the supporting frame 12, the arc isolation plate 154 is arranged on the side facing the electrode through hole 1211 and corresponding to the electrode through hole 1211, so that when the welding is melted, the arc isolation plate 154 can be quickly rotated to the electrode through hole 1211 to prevent the solder adhesion that may occur between the electrode connector 14 and the second electrode 132.

[0071] Among them, since the arc isolation plate 154 rotates along an arc, preferably, the arc isolation plate 154 has an inner arc edge 1541 bent toward the rotating shaft 122 and an outer arc edge 1542 farther away from the rotating shaft 122 than the inner arc edge 1541, that is, the arc isolation plate 154 is roughly fan-shaped.

[0072] Preferably, an arc-shaped limiting groove is provided on the rotating body 15, and the electrode connecting member 14 includes an arc-shaped portion located in the arc-shaped limiting groove, and during the rotation of the rotating body 15, the arc-shaped portion rotates along the arc-shaped limiting groove;

[0073] Wherein, the two side edges of the arc-shaped limiting groove are respectively extended from the inner arc edge 1541 and the outer arc edge 1542 of the arc isolation plate 154 .

[0074] The arc isolation plate 154 is provided with a second state indicator 152 (described in further detail below) extending along an arc shape at a position close to the outer arc edge 1542, and an arc strip 157 extending along an arc shape is formed at a position close to the inner arc edge 1541. Figure 1 As shown, when the rotating body 15 is in the first position, the welding point between the electrode connector 14 and the second electrode 132 is located between the arc strip 57 and the second state indicator 152, and the arc isolation plate 154 is located on one side of the welding point. When the weld melts, the arc isolation plate 154 directly rotates to cut into between the electrode connector 14 and the second electrode 132. The arc strip 57, the second state indicator 152 and the edges on both sides of the arc isolation plate 154 all help to completely block the arc that may occur between the electrode connector 14 and the second electrode 132.

[0075] In this embodiment, the potential storage spring 16 is on the side of the rotating body 15 away from the bottom end of the carrier 12, and when the electrode connector 14 and the second electrode 132 are in a welding state, the potential storage spring 16 is in a stretched state, applying a pulling force to the rotating body 15. When the rotating body 15 rotates in a direction away from the bottom end of the carrier, the potential storage spring contracts.

[0076] Furthermore, a receiving groove 155 for accommodating the potential-accumulating spring 16 is provided at a position between the rotating shaft 122 and the arc isolation plate 154 on the rotating body 15, a first spring connecting portion 123 is provided on the supporting frame 12, and a second spring connecting portion 156 is provided on the rotating body 15 near the receiving groove 155, one end of the potential-accumulating spring 16 is connected to the first spring connecting portion 123, and the other end is connected to the second spring connecting portion 156, and a portion of the potential-accumulating spring 16 near the second spring connecting portion 156 is located in the receiving groove 155, wherein the receiving groove 155 limits the potential-accumulating spring 16 to bend toward the rotating shaft 122, so that when the rotating body 15 rotates, the potential-accumulating spring 16 expands and contracts along an arc path.

[0077] In this embodiment, the surge protection module 1 further includes a housing 11. Figure 1 and Figure 2 As shown (and combined with Fig.10 ), the housing 11 is provided with a status display hole 111;

[0078] The support frame 12 is provided with a first status indicator 124. When the rotating body 15 is located at the first position, the status display hole 111 displays the first status indicator 124, indicating that the surge protection module is in a normal working state. The rotating member 15 is provided with a second status indicator 152. When the rotating body 15 rotates to the second position, the status display hole 111 displays the second status indicator 152, indicating that the surge protection module is in a failure state.

[0079] Specifically, the second state indicator 152 is arranged on the outer side of the arc isolation plate 154 in the radial direction (radial direction with the rotating shaft 122 as the center), and the second state indicator 152 extends out of the arc isolation plate 154 along an arc to form an arc strip bent toward the rotating shaft 122.

[0080] There is a gap between the first state indicator 124 and the state display hole 111 . When the rotating body 15 rotates to the second position, the second state indicator 152 rotates to enter the gap and corresponds to the state display hole 111 , so that the state display hole 111 displays the second state display part 152 .

[0081] According to another aspect of the present invention, a surge protection device is also provided. Fig.11 and Fig.12 As shown, the surge protection device comprises a base 2 and the surge protection module 1 as described above mounted on the base 2;

[0082] The base 2 is provided with sockets corresponding to the first pin 1311 and the second pin 141 respectively and used for electrically connecting to the circuit, and the first pin 1311 and the second pin 141 of the surge protection module 1 are correspondingly inserted into the sockets;

[0083] The base 2 is also provided with a remote signaling mechanism, which is arranged to be linked with the tripping mechanism. When the rotating body 15 is in the first position, the remote signaling mechanism indicates a first state signal, and when the rotating body 15 is in the second position, the remote signaling mechanism indicates a second state signal.

[0084] Specifically, one surge protection module 1 or at least two surge protection modules 1 arranged side by side may be installed on the base 2;

[0085] In one embodiment, the base 2 is equipped with two surge protection modules 1, such as Fig.12 As shown, the two surge protection modules 1 can be mounted on the base 2 by snap-fitting. Specifically, Fig.11As shown, buckles 112 are respectively provided on both sides of the housing 11 of the surge protection module 1, and a snap-fit ​​structure corresponding to the buckle 112 is provided on the base 2, and each surge protection module 1 is fixed to the base 2 by snap-fitting.

[0086] In order to prevent the first pin 1311 and the second pin 141 from being misaligned when the surge protection module 1 is installed on the base 2, an anti-error pin 129 is provided on the support frame 12 of the surge protection module 1. The anti-error pin 129 is correspondingly inserted into the anti-error socket 213 of the base 2, which can prevent the surge protection module 1 from being installed incorrectly on the base 2.

[0087] Fig.13 The structure of the base 2 in a disassembled state is shown. The base 2 includes a mounting body 22 and an upper cover 21 covering the mounting body 22. The upper cover 21 can be fixed to the mounting body 22 by snapping or other means. A first wiring board 27 and a second wiring board 28 are installed on the installation body 22. A limiting groove can be set on the installation body 22 to limit the first wiring board 28 and the second wiring board 29. The first wiring board 28 and the second wiring board 29 are respectively provided with sockets for plugging with the first pin 1311 and the second pin 141. The upper cover 21 is provided with openings 211 corresponding to the sockets on the first wiring board 27 and the second wiring board 28. The sockets on the first wiring board 27 and the second wiring board 28 and the corresponding openings 211 on the upper cover 21 form a socket for plugging the first pin 1311 and the second pin 141. The first wiring board 27 and the second wiring board 28 are respectively electrically connected to the circuit through the wire pressing frame 29 and the bolts set thereon. The circuit can be electrically connected to the first wiring board 27 and the second wiring board 28 through the wiring hole 212 above the base 2.

[0088] In this embodiment, if Figure 13-Figure 15 As shown, the remote signaling mechanism includes a micro switch 23, a linkage rocker 24, a transmission member 25 corresponding to each surge protection module 1, and a spring 26 arranged between each transmission member 25 and the base 2; wherein,

[0089] The micro switch 25 is fixedly mounted on the base 2, and the linkage swing rod 24 is rotatably mounted on the base 2 (the micro switch 25 and the linkage swing rod 24 are specifically mounted on the mounting body 22 of the base 2), and the linkage swing rod 24 includes a triggering portion 241 for triggering a button of the micro switch 23 and a force-bearing portion 242 corresponding to each of the transmission members 25;

[0090] A limited surface 151 is formed on one side of the rotating body 15 facing the bottom end of the supporting frame 12. When the rotating body 15 is in the first position, the limited surface 151 of the rotating body 15 presses on the transmission member 25 so that the transmission member 25 is in a compressed state, the spring 26 is compressed between the transmission member 25 and the base 2, and the micro switch 23 sends out the first state signal to indicate that the surge protection device is in a normal state; when the rotating body 15 rotates to the second position, the transmission member 25 is separated from the pressure of the rotating body 15, and the transmission member 25 moves under the elastic force of the spring 26, and the transmission member 25 pushes the corresponding force-bearing part 242 to make the linkage rocker 24 rotate, and the touch part 241 touches the button of the micro switch 23 when rotating, and the micro switch 23 sends out the second state signal to indicate that the surge protection device is in a failed state.

[0091] Preferably, a remote signaling terminal seat 3 and a remote signaling connection terminal 4 connected to the remote signaling terminal seat 3 can be provided on the base 2, and the remote signaling terminal seat 3 is connected to the micro switch 23 to remotely transmit the signal indicated by the micro switch 23 through the remote signaling terminal seat 3 and the remote signaling connection terminal 4.

[0092] Specifically, Fig.15 As shown, each of the transmission members 15 in this embodiment includes:

[0093] A middle portion 251, wherein the middle portion 251 is configured to push the force-bearing portion 242 of the linkage swing rod 24;

[0094] A first column 252, the first column 252 is located at one side of the middle portion 251, and the first column 252 is used to work in conjunction with the tripping mechanism;

[0095] A second column 253, wherein the second column 253 is disposed on the other side of the middle portion 251, the spring 26 is sleeved on the second column 253, and one end of the spring 26 is pressed against the middle portion 251, and the other end is pressed against the mounting body 22;

[0096] Among them, when the rotating body 15 is in the first position, the limiting surface 151 of the rotating body 15 applies pressure to the first column 252, so that the spring 26 is in a compressed state; when the rotating body 15 is in the second position, the first column 252 is separated from the pressure of the rotating body 15, and the spring 26 drives the transmission member 25 to move so that the middle part 251 pushes the force-bearing part 242 of the linkage rocker 24, and the linkage rocker 24 rotates and presses the micro switch 23.

[0097] Fig.18 It shows that four surge protection modules 1 are installed on the base 2. Fig.19It is shown that a linkage swing rod 24 and transmission members 25 corresponding to four surge protection modules 1 are installed on the installation body 22 of the base 2 , and force-bearing parts 242 corresponding to the four transmission members 25 are arranged on the linkage swing rod 24 .

[0098] In the surge protection device provided by the present invention, if any one of the surge protection modules 1 fails, the linkage swing rod 24 will trigger the micro switch 23, thereby sending a signal indicating that the surge protection device has failed.

[0099] The specific working process of the surge protection device in this embodiment is described below.

[0100] like Fig.16 and Fig.17 As shown, when the remote signaling mechanism is installed on the base 2 , the first column 252 of the transmission member 25 passes through the upper cover 21 of the base 2 and the through hole 126 on the support frame 12 in the surge protection module 1 .

[0101] When the electrode lead-out member 14 and the second electrode 132 of the varistor 13 are in a welding state, the rotating body 15 is in a first position, such as Fig.16 In the state shown, at this time, the limit surface 151 of the rotating body 15 is pressed on the first column 252 of the transmission member 25, and the spring 26 is in a contracted state under the pressure of the transmission member 25. The transmission member 25 does not apply force to the linkage swing rod 24, and the micro switch 23 is not pressed by the linkage swing rod 24, so that the micro switch 23 is in a state indicating that the surge protection device is working normally; when the varistor 13 has a fault such as degradation or short circuit, the temperature rises, and the solder between the electrode lead-out member 14 and the second electrode 132 of the varistor 13 is melted, and the rotating body 15 rotates to the second position, as shown in FIG. Fig.17 As shown, the first column 252 is separated from the limit surface 151 of the rotating body 15, and the transmission member 25 moves upward under the elastic force of the spring 26. During the upward movement, the middle part 251 on the transmission member 25 pushes the corresponding force-bearing part 242 on the linkage rocker 24, thereby rotating the linkage rocker 24. The rotation of the linkage rocker 24 will cause the trigger part 241 to press the switch on the micro switch 23, changing the state of the micro switch 23, indicating that the surge protection device is in an invalid state, and the indication signal is remotely transmitted through the remote signal terminal seat 3 and the remote signal connection terminal 4 connected to the remote signal terminal seat 3, reminding the maintenance personnel to replace the failed surge protection module 1 in time.

[0102] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A surge protection module, characterized in that: The surge protection module comprises: A carrier frame, the carrier frame comprising a mounting plate, the mounting plate being provided with electrode vias penetrating through two sides; A varistor, the varistor being mounted on a first side of the mounting plate, the varistor having a first electrode and a second electrode, the first electrode being provided with a first pin for plugging in and located at the bottom end of the carrier; An electrode connector, the electrode connector being mounted on the second side of the mounting plate, one end of the electrode connector being welded to the second electrode of the varistor through the electrode via, and the other end of the electrode connector being provided with a second pin for plugging in at the bottom end of the carrier; A tripping mechanism, the tripping mechanism comprising a rotating body and a potential storage spring, one end of the rotating body being rotatably mounted on the second side of the mounting plate via a rotating shaft, an arc isolation plate being arranged on the rotating body at a position away from the rotating shaft; wherein when the electrode connector and the second electrode are in a welding state, the rotating body is restricted to a first position close to the bottom end of the carrier, the arc isolation plate is located on a side of the rotating body facing the electrode through hole and corresponding to the electrode through hole, and the potential storage spring is arranged between the rotating body and the carrier and is in a compressed or stretched potential storage state; When the solder between the electrode connector and the second electrode melts, the potential storage spring drives the rotating body to rotate to a second position in a direction away from the bottom end of the carrier through elastic force. In the second position, the arc isolation plate rotates to the electrode through hole and between the electrode connector and the second electrode. The potential storage spring is located on a side of the rotating body away from the bottom end of the supporting frame, and when the electrode connecting member and the second electrode are in a welding state, the potential storage spring is in a stretched state, and when the rotating body rotates in a direction away from the bottom end of the supporting frame, the potential storage spring contracts; The surge protection module further comprises a housing, and a status display hole is provided at the top of the housing; The carrier is provided with a first state indicator, and when the rotating body is located at the first position, the state display hole displays the first state indicator; The rotating body is provided with a second state indicating portion, and when the rotating body rotates to the second position, the state display hole displays the second state indicating portion.

2. The surge protection module according to claim 1, characterized in that: A receiving groove for receiving the potential-accumulating spring is provided between the rotating shaft and the arc isolation plate, a first spring connecting portion is provided on the bearing frame, and a second spring connecting portion is provided on the rotating body near the receiving groove; One end of the accumulating spring is connected to the first spring connecting part, and the other end is connected to the second spring connecting part, and the part of the accumulating spring close to the second spring connecting part is located in the accommodating groove, and the accommodating groove limits the accumulating spring to bend toward the rotating shaft.

3. The surge protection module according to claim 1, characterized in that: The second state indicator is arranged on the outer side of the arc isolation plate in the radial direction, and the second state indicator extends out of the arc isolation plate along an arc to form an arc strip bent toward the rotating shaft; There is a gap between the first state indicating portion and the state display hole. When the rotating body rotates to the second position, the second state indicating portion rotates to enter the gap and corresponds to the state display hole.

4. The surge protection module according to claim 1, characterized in that: The arc isolation plate has an inner arc edge bent toward the rotating shaft and an outer arc edge farther from the rotating shaft than the inner arc edge.

5. The surge protection module according to claim 4, characterized in that: The rotating body is provided with an arc-shaped limiting groove, the electrode connecting member comprises an arc-shaped portion located in the arc-shaped limiting groove, and during the rotation of the rotating body, the arc-shaped portion moves along the arc-shaped limiting groove relative to the rotating body; Wherein, the two side edges of the arc-shaped limiting groove are respectively extended from the inner arc edge and the outer arc edge of the arc isolation plate.

6. The surge protection module according to any one of claims 1 to 4, characterized in that: A boss protruding toward the electrode via hole is formed on the second electrode of the varistor, and one end of the electrode connector welded to the varistor is a sheet-like body, which is welded to the surface of the boss through the electrode via hole.

7. A surge protection device, characterized in that: The surge protection device comprises a base and a surge protection module according to any one of claims 1 to 6 mounted on the base; Wherein, the base is provided with sockets corresponding to the first pin and the second pin respectively and used for electrically connecting to the circuit, and the first pin and the second pin of the surge protection module are correspondingly inserted into the sockets; A remote signaling mechanism is also provided on the base, and the remote signaling mechanism is configured to be linked with the tripping mechanism. When the rotating body is in the first position, the remote signaling mechanism indicates a first state signal, and when the rotating body is in the second position, the remote signaling mechanism indicates a second state signal.

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