Modular surge protector

Abstract

The invention relates to the field of surge protector equipment, in particular to a modular surge protector. The modularized surge protector comprises a first shell internally provided with a processing module and a second shell internally provided with a backup protection module, a matching cavity with an opening in one end is formed in the first shell, and the second shell can move into the matching cavity through the opening in the 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] This invention relates to the field of surge protection devices, and in particular to a modular surge protector. Background Technology

[0002] The backup protection device of the surge protector has an active disconnection function. With the modular design of the surge protector's lightning protection component module head and base, the backup protection device is also modularly designed, specifically forming a backup protection module. The backup protection module is designed similarly to the module head of the built-in lightning protection component, and it is movable and cooperates with the base. The existing module head of the built-in lightning protection component cooperates with the processing module in the base through the rod of the thermal trip component to realize the transmission of the thermal trip action signal. The design of the rod ensures that when the module head is cooperated with the base, the rod cooperates with the corresponding structure of the processing module in the base along with the module head, avoiding the need to install the thermal trip action signal transmission structure separately before and after assembly, thus improving the assembly efficiency of the surge protector.

[0003] Similarly, when the backup protection device activates, it also needs to transmit a signal to the processing module inside the base. Therefore, the cooperation between the backup protection module and the base also involves the installation of the backup protection activation signal transmission structure. To improve the assembly efficiency of the surge protector, the cooperation between the backup protection device and the processing module inside the base should be realized simultaneously when the backup protection module and the base are being fitted together. Summary of the Invention

[0004] On the one hand, the present invention provides a modular surge protector that can simultaneously achieve the coordination of the signal transmission structure between the backup protection device and the processing module when installing the backup protection module;

[0005] The modular surge protector provided by the present invention includes a first housing with an internal processing module and a second housing with an internal backup protection module. The first housing has a mating cavity with one end open. The second housing can move into the mating cavity along a first direction through the opening. The backup protection module includes a first electrical signal transmission component, and the processing module includes a second electrical signal transmission component. A communication port is formed on the cavity wall of the mating cavity. The first electrical signal transmission component can contact the second electrical signal transmission component along the first direction through the communication port.

[0006] Furthermore, at least a portion of the first electrical signal transmission element can extend out of the mating cavity via the communication port.

[0007] Furthermore, the second electrical signal transmission element has a first contact surface facing the communication port, and the first electrical signal transmission element has a second contact surface on the side facing the communication port. The second contact surface extends obliquely in a direction opposite to the first direction to the cavity wall parallel to the first direction, and the end of the second contact surface near the cavity wall forms a second contact end. The second contact end can abut against the cavity wall along with the second housing and extend out of the cavity through the communication port to abut against the first contact surface.

[0008] Furthermore, the second electrical signal transmission element also has a third contact surface facing the communication port, the third contact surface being located on the side of the second contact end away from the second contact surface, and the second contact surface extending obliquely away from the cavity wall in a direction opposite to the first direction.

[0009] Furthermore, the second electrical signal transmission component is a thin sheet structure, and the second electrical signal transmission component is bent to form a first segment and a second segment. The side of the first segment facing the communication port is the second contact surface, the side of the second segment facing the communication port is the third contact surface, and the side of the connection between the first segment and the second segment facing the communication port is the second contact end.

[0010] Furthermore, the backup protection module includes a trigger component, a circuit component, and a movable component capable of moving to disconnect from the two electrodes on the grounding circuit. The trigger component cooperates with the movable component to restrict the movement of the movable component under the action of a spring. The circuit component includes two segments electrically connected to the first electrical signal transmission component. The movable component is provided with a conductive sheet that can contact the two segments to make them conductive. The conductive sheet can move with the movable component to separate from the conductive sheet.

[0011] Furthermore, the movable member is slidably engaged with the second housing, the movable member has an abutting end along the sliding direction, the second housing has an inner wall end corresponding to the abutting end, the movable 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 disposed on the end face of the abutting end, and the two segments are fixedly disposed at corresponding positions on the end face of the inner wall end.

[0012] Furthermore, the movable component includes a frame and a contact block. The frame is an insulating structure and is slidably engaged with the second housing. The frame has a channel structure, and the contact block is located within the channel structure and is slidably engaged with the frame in a direction perpendicular to the sliding direction of the frame. The contact block can contact the two electrodes.

[0013] Furthermore, the segmented body is bent to form a first structural part and a second structural part. The first structural part is fixedly disposed on the end face of the inner wall end, and the second structural part extends in the direction toward the abutting end. The conductive sheet can abut against the second structural part.

[0014] Furthermore, it also includes a third housing with built-in lightning protection components, which is detachably coupled to the first housing.

[0015] Beneficial effects

[0016] To enable modular installation of the backup protection module of the surge protector, the first housing in this design has a mating cavity with one open end. The second housing, where the backup protection device is located, can move into the mating cavity through the opening along the first direction. A connecting port is opened on the cavity wall of the mating cavity, corresponding to the second electrical signal transmission component of the processing module. When the second housing moves into the mating cavity along the first direction, the first electrical signal transmission component moves with the second housing to pass through the connecting port and contact the second electrical signal transmission component. This simultaneously completes the structural installation of the backup protection module and the connection of the signal circuit of the backup protection device, improving the assembly efficiency of the surge protector. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the modular surge protector provided in Embodiments 1 and 2 of the present invention;

[0019] Figure 2 This is a schematic diagram of the mating structure of the mating cavity, the communicating port, and the second electrical signal transmission component provided in Embodiment 1 of the present invention;

[0020] Figure 3 This is a schematic diagram of the mating structure of the first electrical signal transmission component and the second housing provided in Embodiment 1 of the present invention;

[0021] Figure 4 This is a schematic diagram of the cooperative structure of the first electrical signal transmission device and the second electrical signal transmission device provided in Embodiment 1 of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the two segments provided in Embodiment 2 of the present invention when they are not in contact with the conductive sheet;

[0023] Figure 6This is a schematic diagram of the structure of the segmented body provided in Embodiment 2 of the present invention.

[0024] Reference numerals: a-First direction; 1-First housing; 2-Second housing; 3-Mating cavity; 4-Third housing; 5-Second electrical signal transmission component; 6-Cavity wall; 7-Connecting port; 8-First electrical signal transmission component; 9-Second contact surface; 10-Second contact end; 11-Third contact surface; 12-First contact surface; 13-Moving component; 14-Conductive sheet; 15-Segment body; 16-Rib plate; 17-Wire; 18-Frame; 19-Contact block; 20-First structural part; 21-Second structural part. Detailed Implementation

[0025] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] Example 1

[0027] like Figures 1 to 4 The modular surge protector shown includes a first housing 1 with an internal processing module and a second housing 2 with an internal backup protection module. The first housing 1 has a mating cavity 3 with one end open. The second housing 2 can move into the mating cavity 3 along a first direction a through the opening. The backup protection module includes a first electrical signal transmission component 8, and the processing module includes a second electrical signal transmission component 5. A communication port 7 is opened on the cavity wall 6 of the mating cavity 3. The first electrical signal transmission component 8 can contact the second electrical signal transmission component 5 along the first direction a through the communication port 7 with the second housing 2.

[0028] The first housing 1 encloses and fixes the various components within the surge protector, forming a relatively independent integrated unit. The processing module includes a circuit board with corresponding functional circuits and chips. The circuit board also has ports for power supply and communication with external or internal components. In this design, the circuit board is fixed within the first housing 1 using screws or similar means. The second electrical signal transmission component 5 on the circuit board serves as a connection port, cooperating with the first electrical signal transmission component 8 of the backup protection module to achieve circuit connection between the backup protection module and the processing module, thereby enabling electrical signal transmission from the backup protection module. The second housing 2 encloses and fixes the various components of the backup protection module, forming a relatively independent integrated unit. The backup protection module includes a trigger assembly, a circuit assembly, and a movable component 13 that can move along the first direction a to disengage from the two electrodes on the grounding loop. The trigger assembly cooperates with the movable component 13, restricting its movement under the action of a spring, so that the movable component 13 contacts the two electrodes on the grounding loop. To achieve modular installation of the backup protection module of the surge protector, the first housing 1 in this solution is provided with a mating cavity 3 with one end open. The second housing 2, where the backup protection device is located, can move into the mating cavity 3 along the first direction a through the opening. A connecting port 7 is opened on the cavity wall 6 of the mating cavity 3. The connecting port 7 corresponds to the second electrical signal transmission component 5 of the processing module. When the second housing 2 moves into the mating cavity 3 along the first direction a, the first electrical signal transmission component 8 moves with the second housing 2 to pass through the connecting port 7 and contact the second electrical signal transmission component 5, thereby completing the structural installation and signal circuit connection of the backup protection module.

[0029] In one alternative embodiment, at least a portion of the first electrical signal transmission element 8 can extend out of the mating cavity 3 via the communication port 7.

[0030] Since the mating cavity 3 is in an open state when not in conjunction with the backup protection device, to prevent the second electrical signal transmission component 5 extending into the mating cavity 3 from being affected, the second electrical signal transmission component 5 in this design is located on the other side of the connecting port 7, and the cavity wall 6 of the mating cavity 3 acts as a shield for the second electrical signal transmission component 5. The end of the first electrical signal transmission component 8 can extend to the second electrical signal transmission component 5 on the other side of the connecting port 7 as the second housing 2 moves, and come into contact with the second electrical signal transmission component 5.

[0031] In one alternative embodiment, the second electrical signal transmission element 5 has a first contact surface 12 facing the communication port 7, and the first electrical signal transmission element 8 has a second contact surface 9 on the side facing the communication port 7. The second contact surface 9 extends obliquely in a direction opposite to the first direction a to the cavity wall 6 that is parallel to the first direction a, and the end of the second contact surface 9 near the cavity wall 6 forms a second contact end 10. The second contact end 10 can abut against the cavity wall 6 along with the second housing 2 and extend out of the cavity through the communication port 7 to abut against the first contact surface 12.

[0032] In this design, the cavity wall 6 is parallel to the first direction a. That is, as the second housing 2 moves, the first electrical signal transmission component 8 slides relative to the cavity wall 6. Upon reaching the connecting opening 7, it extends into the connecting opening 7 in a direction perpendicular to the first direction a, contacting the second electrical signal transmission component 5 on the other side of the connecting opening 7. To ensure the first electrical signal transmission component 8 can extend into the connecting opening 7, the relative distance between the first electrical signal transmission component 8 and the second housing 2 is greater than the relative distance between the cavity wall 6 and the second housing 2. When the second housing 2 moves into the mating cavity 3, the first electrical signal transmission component 8 undergoes elastic deformation relative to the second housing 2, causing it to move towards the second housing 2 and thus move into the mating cavity 3 along with the second housing 2. The function of the second contact surface 9 is to allow the first electrical signal transmission component 8 to undergo elastic deformation at the opening of the mating cavity 3. Specifically, the second contact surface 9 extends towards the connecting opening 7 and is inclined in a direction opposite to the first direction a, close to the cavity wall 6. When the second contact surface 9 abuts against the edge of the cavity wall 6 at the opening, as the second housing 2 moves along the first direction a under external force... The abutting force of the cavity wall 6 edge against the second contact surface 9 generates a component force on the first electrical signal transmission component 8, causing it to move closer to the second housing 2. This results in the elastic deformation of the first electrical signal transmission component 8, which moves closer to the second housing 2. As the first electrical signal transmission component 8 enters the mating cavity 3 along with the second housing 2, the second contact end 10 of the second contact surface 9, which is close to the cavity wall 6, abuts against the cavity wall 6. As the second housing 2 moves, the second contact end 10 moves relative to the cavity wall 6. When it moves to the connecting port 7, the abutting force of the cavity wall 6 against the first electrical signal transmission component 8 disappears. During the process of restoring the original state, the deformation of the first electrical signal transmission component 8 extends out of the cavity through the connecting port 7. The second contact end 10 contacts the first contact surface 12 of the second electrical signal transmission component 5 on the side facing the connecting port 7, thus achieving an electrical connection.

[0033] The first contact surface 12 is parallel to the first direction a. When the second contact end 10 contacts the first contact surface 12, the second housing 2 does not reach the mating position with the first housing 1. Therefore, the second housing 2 continues to move along the first direction a, and the second contact end 10 and the first contact surface 12 move relative to each other. Under the action of the elastic force of the first electrical signal transmission element 8, the two always remain in contact.

[0034] In an alternative embodiment, the second electrical signal transmission element 5 further has a third contact surface 11 facing the communication port 7, the third contact surface 11 being located on the side of the second contact end 10 away from the second contact surface 9, the second contact surface 9 extending obliquely away from the cavity wall 6 in a direction opposite to the first direction a.

[0035] The function of the third contact surface 11 is to allow the second contact end 10 of the first electrical signal transmission component 8 to exit the communication port 7 when the second housing 2 is pulled in the opposite direction, so that the first electrical signal transmission component 8 is completely inside the mating cavity 3, thereby allowing the first electrical signal transmission component 8 to move out of the mating cavity 3 in the opposite direction. Specifically, when the third contact surface 11 moves with the direction of the second housing 2 and abuts against the edge of the cavity wall 6 at the communication port 7, as the second housing 2 moves in the opposite direction to the first direction a under the action of 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 component 8 that brings it closer to the second housing 2, thereby causing the first electrical signal transmission component 8 to undergo elastic deformation that brings it closer to the second housing 2. The first electrical signal transmission component 8 completely moves out of the communication port 7 with the movement of the second housing 2, no longer obstructing the reverse movement of the second housing 2. As the second housing 2 moves, the second contact end 10 abuts against the cavity wall 6 again and moves relative to it until the second housing 2 moves out of the mating cavity 3 through the opening.

[0036] In one optional embodiment, the second electrical signal transmission component 5 is a thin sheet structure. The second electrical signal transmission component 5 is bent to form a first segment and a second segment. The side of the first segment facing the connection port 7 is the second contact surface 9, the side of the second segment facing the connection port 7 is the third contact surface 11, and the side of the connection between the first segment and the second segment facing the connection port 7 is the second contact end 10.

[0037] One end of the thin copper sheet containing the second electrical signal transmission component 5 is fixedly connected to the second housing 2. The part extending out of the second housing 2 extends and bends in the opposite direction to the first direction a, and is bent sequentially from the fixed end to the end to form the first segment, the second contact end 10 and the second segment.

[0038] Example 2

[0039] like Figure 1 , Figure 5 and Figure 6 As shown, the backup protection module includes a trigger component, a circuit component, and a movable component 13 that can move to disconnect from the two electrodes on the grounding circuit. The trigger component cooperates with the movable component 13 to restrict the movement of the movable component 13 under the action of a spring. The circuit component includes two segments 15 that are electrically connected to the first electrical signal transmission component 8. The movable component 13 is provided with a conductive sheet 14 that can contact the two segments 15 to make them conductive. The conductive sheet 14 can move with the movable component 13 to the point of separation from the conductive sheet 14.

[0040] The trigger component cooperates with the moving part 13 to generate a constraint force on the moving part 13, which overcomes the spring force, so that the moving part 13 contacts the electrodes on both sides of the gap in the grounding circuit to achieve conduction of the gap. The conductive sheet 14 and the two segments 15 contact to achieve conduction of the electrical signal circuit, that is, the first contact and the second contact cooperate to form a switch structure on the electrical signal circuit. Each segment 15 is electrically connected to a first electrical signal transmission element 8 via a wire 17. Each first electrical signal transmission element 8 is in turn electrically connected to a first and second electrical signal transmission element 5, thereby forming a conductive electrical signal loop. The processing module monitors the backup protection action by monitoring the conduction status of this electrical signal loop. When the backup protection module is not triggered and the moving part 13 is in a position cooperating with the triggering component, the conductive piece 14 can maintain contact with the segment 15 along with the moving part 13, thereby making the electrical signal loop conductive. When the current flowing through the grounding loop of the surge protector reaches the backup protection breaking threshold, the constraint of the triggering component on the moving part 13 is released. The moving part 13 moves in the opposite direction to the first direction a under the action of the spring, so that the moving part 13 is disengaged from the electrodes on both sides of the gap on the grounding loop, the grounding loop is broken, and the backup protection of the surge protector is realized. At the same time, the conductive piece 14 moves with the moving part 13 to disengage from the two segments 15, the electrical signal loop is broken, the processing module obtains the signal of backup protection action triggering, and uploads the signal to the host computer.

[0041] In one optional embodiment, the movable member 13 is slidably engaged with the second housing 2. The movable member 13 has an abutting end along the sliding direction, and the second housing 2 has an inner wall end corresponding to the abutting end. The movable member 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 disposed on the end face of the abutting end, and the two segments 15 are fixedly disposed at corresponding positions on the end face of the inner wall end.

[0042] A sliding groove is formed within the second housing 2. The movable member 13 is located within the sliding groove and can slide in a direction opposite to the first direction a under the action of a spring. One end of the movable member 13 is an abutment end. The end of the groove corresponding to the abutment end in the sliding groove of the housing is the inner wall end. The portions of the two segments 15 that contact 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 abutment end. When the movable member 13 cooperates with the trigger assembly, the end face of the abutment end of the movable member 13 is close to the end face of the inner wall end of the sliding groove, and there is either a fit or a gap between them, so that the conductive sheet 14 contacts the two segments 15. When the movable member 13 slides in the sliding groove, the end face of the abutment end of the movable member 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 separates from the two segments 15.

[0043] In this design, the sliding groove is formed by a rib plate 16 inside the housing. Two segments 15 are attached to the rib plate 16 corresponding to the inner wall end. One segment 15 is entirely attached to the end face of the inner wall end, and a wire 17 connected to the first electrical signal transmission component 8 is welded to this segment. A part of the other segment 15 is attached to the end face of the inner wall end, and the other part is bent through the side wall of the rib plate 16 and attached to the outer wall of the other side of the rib plate 16. A wire 17 connected to another first electrical signal transmission component 8 is welded to this segment. The two wires 17 are located on the inner wall and outer wall of the rib plate 16, respectively, and extend into the wire groove structure inside the housing.

[0044] In one optional embodiment, the movable component 13 includes a frame 18 and a contact block 19. The frame 18 is an insulating structure and is slidably engaged with the second housing 2. The frame 18 is provided with a channel structure. The contact block 19 is located inside the channel structure and is slidably engaged with the frame 18 in a direction perpendicular to the sliding direction of the frame 18. The contact block 19 can contact the two electrodes.

[0045] The conductive sheet 14 contacts the two segments 15 to form an electrical signal circuit, and the moving part 13 contacts the electrodes on both sides of the grounding circuit to form a grounding circuit. To avoid the two electrical circuits from affecting each other, the conductive sheet 14 and the contact block 19 are connected by an insulating frame 18.

[0046] When the frame 18 is engaged with the trigger assembly, the contact block 19 contacts the two electrodes. The contact block 19 is conductive, thus ensuring the grounding circuit is connected. The frame 18 is insulated, and the conductive sheet 14 is attached to the end face of the contact end of the frame 18. The frame 18 has a channel structure, and the contact block 19 is located within the channel structure and slides in engagement with the frame 18 in a direction perpendicular to the first direction a. Openings of the channel structure are formed on the two end faces of the frame 18 facing the electrodes, and the contact block 19 contacts the electrodes through these openings.

[0047] In one alternative embodiment, the segment 15 is bent to form a first structural portion 20 and a second structural portion 21. The first structural portion 20 is fixedly disposed on the end face of the inner wall end, and the second structural portion 21 extends in the direction toward the abutting end, and the conductive sheet 14 can abut against the second structural portion 21.

[0048] The second structural part 21, relative to the first structural part 20 attached to the inner wall end, is bent towards the abutting end to form an elastic structure. When the moving member 13 cooperates with the trigger assembly, the end face of the abutting end of the moving member 13 may be in contact with or have a gap with the end face of the inner wall end of the sliding groove. Due to assembly accuracy issues, the gap between the end face of the abutting end and the end face of the inner wall end of the sliding groove may be too large, resulting in the first contact piece and the two segmented bodies 15 failing to make reliable contact. To avoid the above situation, the second structural part 21 in this solution is bent to extend in the direction towards the abutting end, thereby forming an elastic structure. When the moving member 13 cooperates with the trigger assembly, the first contact piece on the end face of the abutting end of the moving member 13 abuts against the second structural part 21 and presses the second structural part 21 towards the inner wall end, causing the second structural part 21 to deform. When the gap between the end face of the abutting end and the end face of the inner wall of the sliding groove is too large due to assembly precision, the first contact piece abuts against the second structural part 21, resulting in a smaller deformation of the second structural part 21; when the gap between the end face of the abutting end and the end face of the inner wall of the sliding groove is too small due to assembly precision, the first contact piece abuts against the second structural part 21, resulting in a larger deformation of the second structural part 21.

[0049] In one alternative embodiment, a third housing 4 with built-in lightning protection components is also included, and the third housing 4 is detachably coupled to the first housing 1.

[0050] The surge protection assembly includes surge protection elements and thermal tripping components. The surge protector has a grounding loop structure, such as a copper busbar, for connecting to external cables via interfaces. The surge protection elements and thermal tripping components are located inside the third housing 4 and are connected to the grounding loop structure via connecting terminals extending out of the third housing 4. Electrodes are provided at the two disconnected ends of the grounding loop structure. The movable component 13 in the modular surge protector is located between the two electrodes and contacts the electrodes on both sides of the gap in the grounding loop to achieve conduction between the two sections of the grounding loop structure. The actuating side of the electromagnetic tripping device cooperates with the movable component 13 through a hook or other structural component. The actuating side of the electromagnetic tripping device constrains the movable component 13 through the structural component, so that the movable component 13 can overcome the spring force and maintain contact with the electrodes on both sides of the gap in the grounding loop. When the current flowing through the grounding loop reaches the trigger threshold of the electromagnetic tripping device, the constraint force of the actuating side of the electromagnetic tripping device on the movable component 13 disappears, causing the movable component 13 to move under the action of the spring to disengage from the electrodes on both sides of the gap in the grounding loop, thereby disconnecting the grounding loop.

[0051] It should be noted that any of the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first-level, second-level, preceding, and following, etc., does not indicate any order. These words can be interpreted as names.

[0052] The above embodiments are only suitable for illustrating the present invention and are not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the present invention, and the patent protection scope of the present invention should be defined by the claims.

Claims

1. A modular surge protector, characterized by, The first shell (1) is provided with a processing module and the second shell (2) is provided with a backup protection module. The first shell (1) is provided with a matching cavity (3) with an open end. The second shell (2) can be moved into the matching cavity (3) through the opening in the first direction (a). The backup protection module comprises a first electrical signal transmission member (8), and the processing module comprises a second electrical signal transmission member (5). A communication port (7) is formed on the cavity wall (6) of the matching cavity (3). The first electrical signal transmission member (8) can be in contact with the second electrical signal transmission member (5) through the communication port (7) in the first direction (a) when the second shell (2) moves.

2. The modular surge protector of claim 1, wherein, 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).

3. The modular surge protector of claim 2, wherein, The second electrical signal transmission member (5) has a first contact surface (12) facing the communication port (7). The side of the first electrical signal transmission member (8) facing the communication port (7) has a second contact surface (9). The second contact surface (9) extends in a direction opposite to the first direction (a) and is close to the cavity wall (6) parallel to the first direction (a). The end of the second contact surface (9) close to the cavity wall (6) forms a second contact end (10). The second contact end (10) can be in contact with the first contact surface (12) through the communication port (7) when the second shell (2) is in contact with the cavity wall (6).

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

5. The modular surge protector of claim 4, wherein, The second electrical signal transmission member (5) has a sheet-like structure. The second electrical signal transmission member (5) is bent to form a first segment and a second segment. The side of the first segment facing the communication port (7) is the second contact surface (9). The side of the second segment facing the communication port (7) is the third contact surface (11). The side of the connection between the first segment and the second segment facing the communication port (7) is the second contact end (10).

6. The modular surge protector of claim 1, wherein, The backup protection module comprises a trigger assembly, a circuit assembly, and a movable member (13) that can be moved away from two electrodes on a grounding circuit. The trigger assembly cooperates with the movable member (13) to limit the movement of the movable member (13) under the action of a spring. The circuit assembly comprises two split bodies (15) electrically connected to the first electrical signal transmission member (8). The movable member (13) is provided with a conductive sheet (14) that can be in contact with the two split bodies (15) to make them conductive. The conductive sheet (14) can be moved away from the conductive sheet (14) with the movable member (13).

7. The modular surge protector of claim 6, wherein, The moving piece (13) is in sliding fit with the second shell (2), the moving piece (13) has an abutting end along a sliding direction, the second shell (2) has an inner wall end corresponding to the abutting end, the moving piece (13) can slide to an end face of the abutting end away from an 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.

8. The modular surge protector of claim 7, wherein, The moving piece (13) comprises a frame body (18) and a contact block (19), the frame body (18) is an insulating structure, the frame body (18) is in sliding fit with the second shell (2), the frame body (18) is provided with a channel structure, the contact block (19) is located in the channel structure and is in sliding fit with the frame body (18) along a direction perpendicular to the sliding direction of the frame body (18), and the contact block (19) can contact two electrodes.

9. The modular surge protector of claim 7, wherein, The split body (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, the second structure part (21) extends in a direction towards the abutting end, and the conductive sheet (14) can abut against the second structure part (21).

10. The modular surge protector of any of claims 1-9, wherein, A third shell (4) provided with a lightning protection assembly is further included, and the third shell (4) is in detachable fit with the first shell (1).

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