Modular surge protector

Abstract

The utility model relates to the field of surge protector equipment, in particular to a modularized surge protector. The modularized surge protector provided by the utility model comprises a first shell internally provided with a processing module and a second shell internally provided with a backup protection module, the first shell is internally provided with a matching cavity with an opening at one end, and the second shell can move into the matching cavity through the opening along a first direction. The backup protection module comprises a first electric signal transmission piece, the processing module comprises a second electric signal transmission piece, a communication port is formed in the cavity wall of the matching cavity, and the first electric signal transmission piece can make contact with the second electric signal transmission piece through the communication port in the first direction along with the second shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to surge protector equipment field especially a kind of modular surge protector. BACKGROUND

[0002] The backup protection device of surge protector has active breaking function, with the modularization of the module head and base of lightning protection assembly of surge protector, the backup protection device is also modularized design, specifically forming backup protection module, backup protection module is similar to the design of the module head of lightning protection assembly, respectively with the base movable cooperation, the module head of existing lightning protection assembly is cooperated with the processing module in base by the rod of thermal trip assembly, and the transmission of thermal trip action signal is realized, the design of rod makes when module head and base cooperate, rod cooperates with the processing module in base corresponding structure with module head, avoid installing thermal trip action signal transmission structure separately before and after assembly, improve the assembly efficiency of surge protector.

[0003] Similarly, backup protection device also needs to transmit signal to the processing module in base when backup protection action occurs, so the cooperation of backup protection module and base also exists the installation of backup protection action signal transmission structure, to improve the assembly efficiency of surge protector, the cooperation of backup protection module and base needs to realize the cooperation of signal transmission structure between backup protection device and processing module in base simultaneously. SUMMARY

[0004] On the one hand, the utility model provides a kind of modular surge protector, can realize the cooperation of signal transmission structure between backup protection device and processing module simultaneously when installing backup protection module;

[0005] The modular surge protector provided by the utility model includes first shell body with processing module and second shell body with backup protection module, the first shell body is equipped with one end opening cooperation cavity, the second shell body can be moved into the cooperation cavity along first direction via the opening, the backup protection module includes first electric signal transmission piece, the processing module includes second electric signal transmission piece, the cavity wall of the cooperation cavity is equipped with communication port, the first electric signal transmission piece can be contacted with the second electric signal transmission piece along first direction via the communication port with the second shell body.

[0006] Further, at least a part of the first electric signal transmission piece can be stretched out outside the cooperation cavity via the communication port.

[0007] Further, the second electrical signal transmission member has a first contact surface facing the communication opening, the side of the first electrical signal transmission member facing the communication opening has a second contact surface, the second contact surface extends obliquely in a direction opposite to the first direction to be close to the cavity wall in parallel with the first direction, and an end of the second contact surface close to the cavity wall forms a second contact end, the second contact end can abut against the first contact surface when the second housing abuts against the cavity wall and extends out of the matching cavity through the communication opening.

[0008] Further, the second electrical signal transmission member has a third contact surface facing the communication opening, the third contact surface is located on the side of the second contact end away from the second contact surface, and the second contact surface extends obliquely in a direction opposite to the first direction to be away from the cavity wall.

[0009] Further, the second electrical signal transmission member has a third contact surface facing the communication opening, the third contact surface is located on the side of the second contact end away from the second contact surface, and the second contact surface extends obliquely in a direction opposite to the first direction to be away from the cavity wall.

[0010] Further, the backup protection module comprises a triggering assembly, a circuit assembly, and a moving member capable of moving away from two electrodes on a grounding circuit, the triggering assembly cooperates with the moving member to limit the movement of the moving member under the action of a spring, the circuit assembly comprises two split bodies electrically connected with the first electrical signal transmission member, the moving member is provided with a conductive sheet capable of contacting the two split bodies to make them conductive, and the conductive sheet can move away from the conductive sheet along with the movement of the moving member.

[0011] Further, the moving member is in sliding cooperation with the second housing, the moving member has an abutting end in the sliding direction, the second housing has an inner wall end corresponding to the abutting end, the moving member can slide to the end face of the abutting end away from the end face of the inner wall end, the conductive sheet is fixedly arranged on the end face of the abutting end, and the two split bodies are fixedly arranged on the end face of the inner wall end at corresponding positions.

[0012] Further, the moving member comprises a frame body and a contact block, the frame body is an insulating structure, the frame body is in sliding cooperation with the second housing, the frame body is provided with a channel structure, the contact block is located in the channel structure and is in sliding cooperation with the frame body in a direction perpendicular to the sliding direction of the frame body, and the contact block can contact the two electrodes.

[0013] Further, the fragment body is bent to form a first structure part and a second structure part, the first structure part is fixedly arranged on the end face of the inner wall end, the second structure part extends in the direction towards the abutting end, and the conductive sheet can abut against the second structure part.

[0014] Further, a third shell with a lightning protection assembly is further included, and the third shell is detachably matched with the first shell. Advantageous effects

[0015] To realize the modular installation of the backup protection module of the surge protector, the first shell is internally provided with a matching cavity with an open end, the second shell where the backup protection device is located can be moved into the matching cavity along a first direction through the opening, a communication opening is arranged on the cavity wall of the matching cavity, the communication opening corresponds to the second signal transmission piece of the processing module, when the second shell is moved into the matching cavity along the first direction, the first signal transmission piece is moved to pass through the communication opening along with the second shell, and is in contact with the second signal transmission piece, thereby completing the structural installation of the backup protection module and the connection of the signal circuit of the backup protection device, and the assembly efficiency of the surge protector is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 is the overall structure schematic diagram of the modular surge protector provided by the embodiment one and the embodiment two of the present application;

[0018] Figure 2 is the matching structure schematic diagram of the matching cavity, the communication opening and the second signal transmission piece provided by the embodiment one of the present application;

[0019] Figure 3 is the matching structure schematic diagram of the first signal transmission piece and the second shell provided by the embodiment one of the present application;

[0020] Figure 4 is the matching structure schematic diagram of the first signal transmission piece and the second signal transmission piece provided by the embodiment one of the present application;

[0021] Figure 5 is the structure schematic diagram of the two fragment bodies and the conductive sheet not in contact provided by the embodiment two of the present application;

[0022] Figure 6It is the structure schematic view of the fragmentation body provided by the embodiment two of the utility model.

[0023] Significance: a-first direction; 1-first shell; 2-second shell; 3-matching cavity; 4-third shell; 5-second electric signal transmission piece; 6-cavity wall; 7-communication port; 8-first electric signal transmission piece; 9-second contact surface; 10-second contact end; 11-third contact surface; 12-first contact surface; 13-moving piece; 14-conductive sheet; 15-fragmentation body; 16-rib plate; 17-conductive wire; 18-frame body; 19-contact block; 20-first structure part; 21-second structure part. DETAILED DESCRIPTION

[0024] The specific embodiments of the utility model are described in detail below in combination with the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. EMBODIMENT

[0025] As Figures 1 to 4 A kind of modular surge protector shown in the figure, including the first shell 1 of being equipped with processing module and the second shell 2 of being equipped with backup protection module, the first shell 1 is equipped with the matching cavity 3 of one end opening, second shell 2 can be moved into matching cavity 3 in first direction a via opening, backup protection module includes first electric signal transmission piece 8, processing module includes second electric signal transmission piece 5, cavity wall 6 on matching cavity 3 is opened and is equipped with communication port 7, first electric signal transmission piece 8 can be contacted with second electric signal transmission piece 5 via communication port 7 along first direction a with second shell 2.

[0026] The first shell 1 is used for enclosing and fixing various elements in the surge protector, so as to form a relatively independent integrated part. The processing module comprises a circuit board, a circuit and a chip corresponding to the function on the circuit board, and a port on the circuit board for power supply and communication with the outside or the inside. The circuit board in the scheme is fixedly arranged in the first shell 1 by screws or the like. The second electrical signal transmission member 5 on the circuit board serves as a connecting port, can cooperate with the first electrical signal transmission member 8 of the backup protection module, realize the circuit connection between the backup protection module and the processing module, and thus realize the electrical signal transmission of the backup protection module. The second shell 2 is used for enclosing and fixing various elements of the backup protection module, so as to form a relatively independent integrated part. The backup protection module comprises a triggering assembly, a circuit assembly and a moving member 13 capable of moving to be separated from two electrodes on the grounding circuit along the first direction a. The triggering assembly cooperates with the moving member 13 to limit the movement of the moving member 13 under the action of the spring, so that the moving member 13 is in contact with the two electrodes on the grounding circuit. In order to realize the modular installation of the backup protection module of the surge protector, the first shell 1 in the scheme is provided with a matching cavity 3 with one end opening. The second shell 2 where the backup protection device is located can be moved into the matching cavity 3 along the first direction a through the opening. The cavity wall 6 of the matching cavity 3 is provided with a communication port 7. The communication port 7 corresponds to the second electrical signal transmission member 5 of the processing module. When the second shell 2 is moved into the matching cavity 3 along the first direction a, the first electrical signal transmission member 8 moves with the second shell 2 to pass through the communication port 7 and is in contact with the second electrical signal transmission member 5, and at the same time, the structural installation and signal circuit connection of the backup protection module are completed.

[0027] In an alternative embodiment, at least a part of the first electrical signal transmission member 8 can extend out of the matching cavity 3 through the communication port 7.

[0028] Since the matching cavity 3 is in an open state when it is not matched with the backup protection device, in order to avoid the second electrical signal transmission member 5 extending into the matching cavity 3 from being affected, the second electrical signal transmission member 5 in the scheme is located on the other side of the communication port 7, and the cavity wall 6 of the matching cavity 3 shields the second electrical signal transmission member 5. The end of the first electrical signal transmission member 8 can extend to the second electrical signal transmission member 5 on the other side of the communication port 7 with the movement of the second shell 2, and be in contact with the second electrical signal transmission member 5.

[0029] In an alternative embodiment, the second electrical signal transmission member 5 has a first contact surface 12 facing the communication opening 7, and the first electrical signal transmission member 8 has a second contact surface 9 facing the side of the communication opening 7, the second contact surface 9 extends obliquely in a direction opposite to the first direction a to near the cavity wall 6 parallel to the first direction a, and the second contact surface 9 has a second contact end 10 at the end near the cavity wall 6, the second contact end 10 can abut against the cavity wall 6 when the second housing 2 abuts against the cavity wall 6 and extends out of the mating cavity through the communication opening 7 to abut against the first contact surface 12.

[0030] The cavity wall 6 in the present scheme is parallel to the first direction a, that is, the first electrical signal transmission member 8 slides relative to the cavity wall 6 with the movement of the second housing 2, and extends into the communication opening 7 in a direction perpendicular to the first direction a when sliding to the communication opening 7 to contact the second electrical signal transmission member 5 on the other side of the communication opening 7. In order to enable the first electrical signal transmission member 8 to extend into the communication opening 7 when passing through the communication opening 7, the relative distance between the first electrical signal transmission member 8 and the second housing 2 is greater than the relative distance between the cavity wall 6 and the second housing 2, and the first electrical signal transmission member 8 elastically deforms relative to the second housing 2 when the second housing 2 moves into the mating cavity 3 to move towards the second housing 2, so that the second housing 2 moves into the mating cavity 3, and the second contact surface 9 enables the first electrical signal transmission member 8 to elastically deform at the opening of the mating cavity 3, specifically, the second contact surface 9 extends obliquely towards the communication opening 7 in a direction opposite to the first direction a to near the cavity wall 6, and when the second contact surface 9 abuts against the edge of the cavity wall 6 at the opening, with the movement of the second housing 2 in the first direction a under the action of an external force, the abutting force of the edge of the cavity wall 6 on the second contact surface 9 generates a component force on the first electrical signal transmission member 8 to move it towards the second housing 2, thereby causing the first electrical signal transmission member 8 to elastically deform towards the second housing 2, and when the first electrical signal transmission member 8 enters the mating cavity 3 with the second housing 2, the second contact end 10 of the second contact surface 9 near the cavity wall 6 abuts against the cavity wall 6, and with the movement of the second housing 2, the second contact end 10 moves relative to the cavity wall 6, and when it moves to the communication opening 7, the abutting force of the cavity wall 6 on the first electrical signal transmission member 8 disappears, and in the process of returning to the original state, the first electrical signal transmission member 8 deforms to extend out of the mating cavity through the communication opening 7, the second contact end 10 contacts the first contact surface 12 of the second electrical signal transmission member 5 facing the side of the communication opening 7 to realize electrical connection.

[0031] The first contact surface 12 is parallel to the first direction a, and when the second contact end 10 contacts the first contact surface 12, the second housing 2 has not reached the mating position with the first housing 1, so the second housing 2 continues to move in the first direction a, and the second contact end 10 moves relative to the first contact surface 12, and under the action of the elasticity of the first electrical signal transmission member 8, the two always remain in contact.

[0032] In an optional embodiment, the second electrical signal transmission component 5 also has a third contact surface 11 facing the connecting port 7, and the third contact surface 11 is located on the side of the second contact end 10 away from the second contact surface 9, and the second contact surface 9 extends obliquely in a direction opposite to the first direction a to away from the cavity wall 6.

[0033] The function of the third contact surface 11 is to allow the second contact end 10 of the first electrical signal transmission member 8 to exit the communication opening 7 when the second housing 2 is pulled in the reverse direction, allowing the first electrical signal transmission member 8 to be completely within the mating cavity 3, thereby allowing the first electrical signal transmission member 8 to move out of the mating cavity 3 in the reverse direction. Specifically, when the third contact surface 11 moves in the direction of the second housing 2 and abuts against the edge of the cavity wall 6 at the communication opening 7, as the second housing 2 moves in a direction opposite to the first direction a under the action of an external force, the abutting force of the edge of the cavity wall 6 against the third contact surface 11 generates a component force on the first electrical signal transmission member 8 that forces it toward the second housing 2, thereby causing the first electrical signal transmission member 8 to elastically deform toward the second housing 2. The first electrical signal transmission member 8 completely moves out of the communication opening 7 as the second housing 2 moves, no longer hindering the reverse movement of the second housing 2. As the second housing 2 moves, the second contact end 10 again abuts against the cavity wall 6 and moves relative to it until the second housing 2 moves out of the mating cavity 3 through the opening.

[0034] In an optional embodiment, the second electrical signal transmission component 5 is a thin sheet structure, and the second electrical signal transmission component 5 is bent to form a first section and a second section. The side of the first section facing the connecting port 7 is a second contact surface 9, the side of the second section facing the connecting port 7 is a third contact surface 11, and the side of the connection between the first section and the second section facing the connecting port 7 is a second contact end 10.

[0035] One end of the thin copper sheet where the second electrical signal transmission component 5 is located is fixedly connected to the second shell 2, and the part extending out of the second shell 2 extends and bends in a direction opposite to the first direction a, and is bent in sequence from the fixed end to the end to form a first section, a second contact end 10 and a second section. Example

[0036] like Figure 1 、 Figure 5 and Figure 6 As shown, the backup protection module includes a trigger component, a circuit component and a movable part 13 that can be moved to separate from the two electrodes on the ground loop. The trigger component cooperates with the movable part 13 to limit the movement of the movable part 13 under the action of the spring. The circuit component includes two slice bodies 15 electrically connected to the first electrical signal transmission component 8. The movable part 13 is provided with a conductive sheet 14 that can contact the two slice bodies 15 to make them conductive. The conductive sheet 14 can move with the movable part 13 to separate from the conductive sheet 14.

[0037] The trigger assembly cooperates with the moving piece 13 to generate a constraint force on the moving piece 13 against the spring force, so that the moving piece 13 contacts the electrodes on both sides of the interval on the ground circuit to realize the conduction of the interval. The conductive sheet 14 and the two split bodies 15 contact to realize the conduction of the electrical signal circuit, that is, the first contact piece and the second contact piece cooperate to form a switch structure on the electrical signal circuit. Each split body 15 is electrically connected to a first electrical signal transmission piece 8 through a wire 17, and each first electrical signal transmission piece 8 is in electrical contact with a first second electrical signal transmission piece 5, thereby forming a conductive electrical signal circuit. The processing module realizes the monitoring of the backup protection action by monitoring the conduction state of the electrical signal circuit. When the backup protection module is not triggered and the moving piece 13 is in the position cooperating with the trigger assembly, the conductive sheet 14 can keep in contact with the split bodies 15 along with the moving piece 13, so as to make the electrical signal circuit conductive. When the current flowing through the ground circuit of the surge protector reaches the backup protection breaking threshold, the constraint of the trigger assembly on the moving piece 13 is released, and the moving piece 13 moves in the direction opposite to the first direction a under the action of the spring, so that the moving piece 13 is separated from the electrodes on both sides of the interval on the ground circuit, the ground circuit is disconnected, the backup protection of the surge protector is realized, and at the same time, the conductive sheet 14 moves away from the two split bodies 15 along with the moving piece 13, the electrical signal circuit is disconnected, the processing module obtains the signal of the backup protection action triggering, and the signal is uploaded to the upper computer.

[0038] In an optional embodiment, the moving piece 13 is in sliding cooperation with the second housing 2, the moving piece 13 has an abutting end in the sliding direction, and the second housing 2 has an inner wall end corresponding to the abutting end. The moving piece 13 can slide to the end face of the abutting end away from the end face of the inner wall end. The conductive sheet 14 is fixedly arranged on the end face of the abutting end, and the two split bodies 15 are fixedly arranged on the end face of the inner wall end at corresponding positions.

[0039] A sliding groove is formed in the second housing 2, and the moving piece 13 is located in the sliding groove and can slide in the direction opposite to the first direction a under the action of the spring. One end of the moving piece 13 is an abutting end, and one end of a groove body corresponding to the abutting end in the sliding groove of the housing is an inner wall end. The portions of the two split bodies 15 in contact with the conductive sheet 14 are attached to the end face of the inner wall end, and the conductive sheet 14 is attached to the end face of the abutting end. When the moving piece 13 cooperates with the trigger assembly, the end face of the abutting end of the moving piece 13 approaches the end face of the inner wall end of the sliding groove, and the two are attached or have a gap therebetween, so that the conductive sheet 14 is in contact with the two split bodies 15. When the moving piece 13 slides in the sliding groove, the end face of the abutting end of the moving piece 13 moves away from the end face of the inner wall end of the sliding groove in the first direction a, so that the conductive sheet 14 is separated from the two split bodies 15.

[0040] The sliding groove in the scheme is formed by the rib plate 16 in the shell, wherein two split pieces 15 are attached on the rib plate 16 corresponding to the end of the inner wall, one of the split pieces 15 is entirely attached on the end face of the inner wall end, and a wire 17 connected with the first electric signal transmission member 8 is welded on the split piece, and the other split piece 15 is partially attached on the end face of the inner wall end, and the other part is bent through the side wall face of the rib plate 16, and is attached with the outer wall face on the other side of the rib plate 16, and a wire 17 connected with the other first electric signal transmission member 8 is welded, and the two wires 17 are respectively located at the inner wall face and the outer wall face of the rib plate 16, and extend into the wire slot structure in the shell.

[0041] In an alternative embodiment, the moving member 13 comprises a frame 18 and a contact block 19, the frame 18 is an insulating structure, the frame 18 is in sliding fit with the second shell 2, the frame 18 is provided with a channel structure, and the contact block 19 is located in the channel structure and is in sliding fit with the frame 18 in a direction perpendicular to the sliding direction of the frame 18, and the contact block 19 can contact two electrodes.

[0042] The conductive sheet 14 contacts the two split pieces 15 to form an electric signal loop, and the moving member 13 contacts the electrodes on both sides of the ground loop to form a ground loop, in order to avoid mutual influence of the two electric loops, the conductive sheet 14 and the contact block 19 are matched through the insulating frame 18.

[0043] When the frame 18 cooperates with the trigger assembly, the contact block 19 contacts the two electrodes, the contact block 19 is a conductive structure, so that the ground loop is conducted. The frame 18 is an insulating structure, and the conductive sheet 14 is attached on the end face of the abutting end of the frame 18. The frame 18 is provided with a channel structure, and the contact block 19 is located in the channel structure and is in sliding fit with the frame 18 in a direction perpendicular to the first direction a, and the frame 18 is provided with an opening of the channel structure on the two side end faces facing the electrodes, and the contact block 19 contacts the electrodes through the opening.

[0044] In an alternative embodiment, the split piece 15 is bent to form a first structure part 20 and a second structure part 21, the first structure part 20 is fixedly arranged on the end face of the inner wall end, and the second structure part 21 extends in the direction towards the abutting end, and the conductive sheet 14 can abut against the second structure part 21.

[0045] The second structure part 21 is bent towards the abutting end relative to the first structure part 20 attached to the inner wall end, forming an elastic structure. When the moving part 13 cooperates with the trigger assembly, the end surface of the abutting end of the moving part 13 abuts or has a gap with the end surface of the inner wall end of the sliding groove. Due to the assembly precision, the gap between the end surface of the abutting end and the end surface of the inner wall end of the sliding groove may be too large, resulting in that the first contact piece cannot reliably contact the two split bodies 15. To avoid the above situation, the second structure part 21 in the present scheme is bent to extend along the direction towards the abutting end, thereby forming an elastic structure. When the moving part 13 cooperates with the trigger assembly, the first contact piece on the end surface of the abutting end of the moving part 13 abuts against the second structure part 21 and presses the second structure part 21 towards the inner wall end, so that the second structure part 21 deforms. When the gap between the end surface of the abutting end and the end surface of the inner wall end of the sliding groove is too large due to the assembly precision, the first contact piece abuts against the second structure part 21, so that the deformation amount of the second structure part 21 is small. When the gap between the end surface of the abutting end and the end surface of the inner wall end of the sliding groove is too small due to the assembly precision, the first contact piece abuts against the second structure part 21, so that the deformation amount of the second structure part 21 is large.

[0046] In an alternative embodiment, a third shell 4 with an internal lightning protection assembly is further included, and the third shell 4 is detachably connected with the first shell 1.

[0047] The lightning protection assembly includes a lightning protection element and a thermal release assembly. The surge protector has a grounding loop structure such as a copper bar for connecting with an external cable through an interface. The lightning protection element and the element such as the belt of the thermal release assembly are located in the third shell 4 and connected with the grounding loop structure through the connecting terminal extending out of the third shell 4. The two ends of the grounding loop structure are respectively provided with electrodes. The moving part 13 in the modular surge protector is located between the two electrodes and contacts the electrodes on both sides of the grounding loop to realize the conduction of the two sections of the grounding loop structure. The moving part 13 cooperates with the hook body of the electromagnetic release through the structure. The moving part 13 is constrained by the structure of the electromagnetic release, so that the moving part 13 can overcome the elastic force of the spring and keep in contact with the electrodes on both sides of the grounding loop. When the current flowing through the grounding loop reaches the trigger threshold of the electromagnetic release, the restraining force of the moving part 13 by the electromagnetic release disappears, so that the moving part 13 moves away from the electrodes on both sides of the grounding loop under the action of the spring, thereby disconnecting the grounding loop.

[0048] It should be noted that any of the above embodiments are illustrative of the present application and not limiting of the present application, and alternative embodiments can be devised by those skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word comprising does not exclude the presence of elements or steps not listed in the claim. The word a or an shall not exclude the presence of a plurality of elements, articles or steps, as used in the description and the claims, the word, first, second, etc. does not imply any orders. The use of the terms at least one and one does not exclude the presence of more than one, although a single unit can also be present. The use of the terms first, second and the like does not imply any orders. These terms can be understood as names.

[0049] The above embodiments are only suitable for illustrating the present application, but not limiting the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, all equivalent technical solutions also belong to the scope of the present application, and the patent protection scope of the present application should be defined by the claims.

Claims

1. A modular surge protector, characterized in that: The invention comprises a first shell (1) with a built-in processing module and a second shell (2) with a built-in backup protection module, wherein a matching cavity (3) with an opening at one end is provided in the first shell (1), and the second shell (2) can be moved into the matching cavity (3) through the opening along a first direction (a), the backup protection module comprises a first electric signal transmission component (8), the processing module comprises a second electric signal transmission component (5), a connecting port (7) is provided on a cavity wall (6) of the matching cavity (3), and the first electric signal transmission component (8) can contact the second electric signal transmission component (5) along the first direction (a) through the connecting port (7) along with the second shell (2).

2. The modular surge protector according to claim 1, characterized in that: At least a portion of the first electrical signal transmission component (8) can extend out of the fitting cavity (3) via the communication port (7).

3. The modular surge protector according to claim 2, characterized in that: The second electrical signal transmission component (5) has a first contact surface (12) facing the connecting port (7), and the first electrical signal transmission component (8) has a second contact surface (9) on the side facing the connecting port (7), and the second contact surface (9) extends obliquely in a direction opposite to the first direction (a) to the cavity wall (6) parallel to the first direction (a), and the second contact surface (9) forms a second contact end (10) at one end close to the cavity wall (6), and the second contact end (10) can abut against the cavity wall (6) along with the second shell (2) and extend out of the mating cavity (3) through the connecting port (7) to abut against the first contact surface (12).

4. The modular surge protector according to claim 3, characterized in that: The second electrical signal transmission member (5) further comprises a third contact surface (11) facing the communication port (7), wherein the third contact surface (11) is located on a side of the second contact end (10) away from the second contact surface (9), and the second contact surface (9) extends obliquely in a direction opposite to the first direction (a) to a direction away from the cavity wall (6).

5. The modular surge protector according to claim 4, characterized in that: The second electrical signal transmission member (5) is a thin sheet structure, and the second electrical signal transmission member (5) is bent to form a first section and a second section, the side of the first section facing the connecting port (7) is the second contact surface (9), the side of the second section facing the connecting port (7) is the third contact surface (11), and the side of the connection between the first section and the second section facing the connecting port (7) is the second contact end (10).

6. The modular surge protector according to claim 1, characterized in that: The backup protection module comprises a trigger component, a circuit component and a moving part (13) capable of moving to be separated from two electrodes on a ground loop, the trigger component cooperates with the moving part (13) to limit the movement of the moving part (13) under the action of a spring, the circuit component comprises two lamellae (15) electrically connected to the first electrical signal transmission part (8), the moving part (13) is provided with a conductive sheet (14) capable of contacting the two lamellae (15) to make them conductive, and the conductive sheet (14) can move with the moving part (13) to be separated from the conductive sheet (14).

7. The modular surge protector according to claim 6, characterized in that: The movable member (13) is slidably matched with the second shell (2), the movable member (13) has an abutting end along the sliding direction, the second shell (2) has an inner wall end corresponding to the abutting end, the movable member (13) can slide until the end face of the abutting end is away from the end face of the inner wall end, the conductive sheet (14) is fixedly arranged on the end face of the abutting end, and the two split bodies (15) are fixedly arranged at corresponding positions on the end face of the inner wall end.

8. The modular surge protector according to claim 7, characterized in that: The movable member (13) includes a frame (18) and a contact block (19), wherein the frame (18) is an insulating structure, and the frame (18) is in sliding engagement with the second housing (2), and a channel structure is provided on the frame (18). The contact block (19) is located in the channel structure and is in sliding engagement with the frame (18) in a direction perpendicular to the sliding direction of the frame (18), and the contact block (19) is capable of contacting the two electrodes.

9. The modular surge protector according to claim 7, characterized in that: The lamella body (15) is bent to form a first structural portion (20) and a second structural portion (21), wherein the first structural portion (20) is fixedly arranged on the end surface of the inner wall end, and the second structural portion (21) extends in a direction toward the abutting end, and the conductive sheet (14) can abut against the second structural portion (21).

10. The modular surge protector according to any one of claims 1 to 9, characterized in that: It also includes a third shell (4) with a built-in lightning protection component, and the third shell (4) is detachably matched with the first shell (1).

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