Backup protection signal assembly and surge protector

Abstract

The utility model relates to the field of surge protector equipment, and especially relates to a backup protection signal assembly and a surge protector. The backup protection signal assembly provided by the utility model comprises a trigger assembly, a circuit assembly and a moving part which can move along a first direction to be separated from two electrodes on a grounding loop, and the trigger assembly is matched with the moving part to limit the moving part to move under the action of a spring. The circuit assembly comprises a first contact piece and a second contact piece which are in contact with each other to form an electric signal loop, and the first contact piece can move along with the moving piece to be separated from the second contact piece.

Description

Technical Field

[0001] The utility model relates to the field of surge protector equipment, in particular to a backup protection signal component and a surge protector. Background Art

[0002] The backup protection device of the surge protector has an active disconnecting function. The backup protection device is also equipped with a thermal trip component. The module head of the existing 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. When the surge protector undergoes a thermal trip action, the displacement signal of the rod of the thermal trip component is converted into an electrical signal and output to external monitoring via the communication module in the base of the surge protector.

[0003] Similarly, when the backup protection device performs the backup protection action, it also needs to transmit the signal to the communication module in the base. Therefore, it is necessary to design a signal structure for the backup protection module that can monitor the backup protection action so that the external monitoring can obtain the backup protection signal in time. Utility Model Content

[0004] On the one hand, the utility model provides a backup protection signal component that can monitor the triggering of backup protection action and convert it into an electrical signal for output;

[0005] On the other hand, the utility model provides a surge protector.

[0006] The backup protection signal component provided by the utility model is used for a surge protector, and includes a trigger component, a circuit component and a movable part that can move along a first direction to separate from two electrodes on a grounding loop. The trigger component cooperates with the movable part to limit the movement of the movable part under the action of a spring. The circuit component includes a first contact piece and a second contact piece that contact each other to form an electrical signal loop. The first contact piece can move with the movable part to separate from the second contact piece.

[0007] Furthermore, the second contact piece includes two spaced-apart split bodies respectively electrically connected to the electrical signal circuit, and the first contact piece can be in contact with the two split bodies.

[0008] Furthermore, the movable member is located inside the shell and slides with the shell along a first direction. The movable member has an abutting end along the first direction, and the shell has an inner wall end corresponding to the abutting end. The movable member can move along the first direction to the end face of the abutting end away from the end face of the inner wall end. The first contact piece is fixedly arranged on the end face of the abutting end, and the two split bodies are fixedly arranged at corresponding positions on the end face of the inner wall end.

[0009] Furthermore, the split body is bent to form a first structural portion and a second structural portion, the first structural portion is fixedly arranged on the end face of the inner wall end, the second structural portion extends in a direction toward the abutting end, and the first contact piece can abut against the second structural portion.

[0010] Furthermore, the first contact piece is insulated from the moving part.

[0011] Furthermore, the moving part includes a frame and a contact block, the frame is an insulating structure, the trigger assembly cooperates with the frame, the frame slides with the shell along the first direction, the contact block can contact the two electrodes, and the contact block is fixedly connected to the frame along the first direction.

[0012] Furthermore, a channel structure is provided on the frame, and the contact block is located in the channel structure and slides with the frame along a direction perpendicular to the first direction.

[0013] Furthermore, the slice body is insulated from the moving part.

[0014] Furthermore, the first contact piece is located between the split piece and the moving part.

[0015] The surge protector provided by the utility model comprises a lightning protection component. The lightning protection component and the moving part in any one of the above backup protection signal components are arranged in series on a grounding loop.

[0016] Beneficial effects

[0017] When the moving part is in the above position, the first contact piece can maintain contact with the second contact piece along with the moving part, so that the electrical signal circuit is turned on; when the grounding circuit of the surge protector flows through a current that reaches the backup protection disconnecting threshold, the trigger component releases the constraint on the moving part, and the moving part moves along the first direction under the action of the spring, so that the moving part is separated from the electrodes on both sides of the interval on the grounding circuit, and the grounding circuit is disconnected, thereby realizing the backup protection of the surge protector. At the same time, the first contact piece moves with the moving part until it is separated from the second contact piece, and the electrical signal circuit is disconnected. The surge protector obtains a signal through the electrical signal circuit that the moving part has moved and the backup protection action is triggered. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0019] Figure 1This is a schematic diagram of the overall structure of the backup protection signal component provided by an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first contact piece and the two split bodies provided in an embodiment of the present utility model;

[0021] Figure 3 It is a structural diagram of the slice body provided by an embodiment of the utility model.

[0022] Reference numerals: 1-moving part; 2-first contact piece; 3-second contact piece; 4-electrical signal circuit; 5-segment body; 6-conducting wire; 7-rib plate; 8-frame; 9-contact block; 10-second structural part; 11-first structural part. DETAILED DESCRIPTION

[0023] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0024] Example

[0025] like Figures 1 to 3 A backup protection signal component shown includes a trigger component, a circuit component and a movable part 1 that can move along a first direction to separate from the two electrodes on the ground loop. The trigger component cooperates with the movable part 1 to limit the movement of the movable part 1 under the action of a spring. The circuit component includes a first contact piece 2 and a second contact piece 3 that contact each other to form an electrical signal loop 4. The first contact piece 2 can move with the movable part 1 to separate from the second contact piece 3.

[0026] The trigger assembly cooperates with the movable member 1 to generate a restraining force on the movable member 1 that overcomes the spring force, causing the movable member 1 to contact the electrodes on both sides of the gap in the ground loop, thereby achieving conduction between the gaps. The first contact piece 2 and the second contact piece 3 cooperate to achieve conduction in the electrical signal loop 4. The first contact piece 2 and the second contact piece 3 contact each other to achieve conduction in the electrical signal loop 4 of the electrical signal circuit, that is, the first contact piece 2 and the second contact piece 3 cooperate to form a switch structure on the electrical signal loop 4. When the moving part 1 is in the above-mentioned position, the first contact piece 2 can maintain contact with the second contact piece 3 along with the moving part 1, so that the electrical signal circuit 4 is turned on; when the grounding circuit of the surge protector flows through a current that reaches the backup protection disconnecting threshold, the triggering component, such as the electromagnetic release, releases the constraint on the moving part 1, and the moving part 1 moves along the first direction under the action of the spring, so that the moving part 1 is separated from the electrodes on both sides of the interval on the grounding circuit, and the grounding circuit is disconnected, realizing the backup protection of the surge protector. At the same time, the first contact piece 2 moves with the moving part 1 until it is separated from the second contact piece 3, and the electrical signal circuit 4 is disconnected. The surge protector obtains a signal through the electrical signal circuit 4 that the moving part 1 has moved and the backup protection action is triggered.

[0027] In an optional embodiment, the second contact piece 3 includes two spaced-apart fin bodies 5 , each of which is electrically connected to the electrical signal circuit, and the first contact piece 2 can contact the two fin bodies 5 .

[0028] The second contact piece includes two segmented bodies 5, which are spaced apart and arranged at relatively fixed positions inside the surge protector. They do not move with the moving part 1. The two segmented bodies are electrically connected to the ports of the electrical signal circuit through cables or the like. When the moving part 1 cooperates with the trigger component, the first contact piece 2 contacts the two segmented bodies 5 with the moving part 1, forming a conductive electrical connection structure between the two segmented bodies 5.

[0029] In this solution, the second contact piece 3 connected to the electrical signal circuit does not move with the moving part 1, and the first contact piece 2 that moves with the moving part 1 has no electrical connection with the electrical signal circuit. Instead, the electrical connection is achieved through the second contact piece 3 when the moving part 1 cooperates with the trigger assembly. Therefore, there is no need to design an electrical connection structure between the first contact piece 2 and the electrical signal circuit that moves with the moving part 1.

[0030] In an optional embodiment, the moving part 1 is located inside the shell and slides with the shell along a first direction. The moving part 1 has an abutting end along the first direction, and the shell has an inner wall end corresponding to the abutting end. The moving part 1 can move along the first direction to the end face of the abutting end away from the end face of the inner wall end. The first contact piece 2 is fixedly arranged on the end face of the abutting end, and the two split bodies 5 are fixedly arranged at corresponding positions on the end face of the inner wall end.

[0031] A sliding groove is formed in the housing, and the moving member 1 is located in the sliding groove and can slide along the first direction under the action of a spring. One end of the moving member 1 is an abutting end, and one end of the groove body corresponding to the abutting end in the sliding groove of the housing is an inner wall end. The parts of the two lamellae 5 that contact the first contact piece 2 are affixed to the end face of the inner wall end, and the first contact piece 2 is affixed to the end face of the abutting end. When the moving member 1 cooperates with the trigger assembly, the end face of the abutting end of the moving member 1 approaches the end face of the inner wall end of the sliding groove, and there is a gap between the two, thereby causing the first contact piece 2 to contact the two lamellae 5. When the moving member 1 slides along the first direction in the sliding groove, the end face of the abutting end of the moving member 1 moves away from the end face of the inner wall end of the sliding groove along the first direction, causing the first contact piece 2 to separate from the two lamellae 5.

[0032] The sliding groove in this scheme is formed by the ribs 7 in the shell, wherein two slice bodies 5 are attached to the ribs 7 corresponding to the inner wall end, one of the slice bodies 5 is entirely attached to the end face of the inner wall end, and the wire 6 connected to the electrical signal circuit is welded on the slice, and a part of the other slice body 5 is attached to the end face of the inner wall end, and the other part is bent through the side wall of the rib 7, attached to the outer wall surface on the other side of the rib 7, and welded with the wire 6 connected to the electrical signal circuit. The two wires 6 are respectively located on the inner wall surface and the outer wall surface of the rib 7, and extend into the wire trough structure inside the shell.

[0033] In an optional embodiment, the split body 5 is bent to form a first structural portion 11 and a second structural portion 10. The first structural portion 11 is fixedly arranged on the end face of the inner wall end, and the second structural portion 10 extends in a direction toward the abutting end. The first contact piece 2 can abut against the second structural portion 10.

[0034] The second structural portion 10 is bent toward the abutment end relative to the first structural portion 11 attached to the inner wall end, forming an elastic structure. When the moving member 1 is matched with the trigger assembly, the end face of the abutment end of the moving member 1 fits or there is a gap between the end face of the inner wall end of the sliding groove. Due to the problem of assembly accuracy, the gap between the end face of the abutment end and the end face of the inner wall end of the sliding groove may be too large, resulting in the first contact piece 2 and the two segment bodies 5 being unable to reliably contact. To avoid the above situation, the second structural portion 10 in this solution is bent to extend in the direction toward the abutment end, thereby forming an elastic structure. When the moving member 1 is matched with the trigger assembly, the first contact piece 2 on the end face of the abutment end of the moving member 1 abuts against the second structural portion 10 and squeezes the second structural portion 10 toward the inner wall end, causing the second structural portion 10 to deform. When the gap between the end face of the abutting end and the end face of the inner wall end of the sliding groove is too large due to the assembly accuracy, the first contact piece 2 and the second structural part 10 are abutted against each other, so that the deformation of the second structural part 10 is smaller; when the gap between the end face of the abutting end and the end face of the inner wall end of the sliding groove is too small due to the assembly accuracy, the first contact piece 2 and the second structural part 10 are abutted against each other, so that the deformation of the second structural part 10 is larger.

[0035] In an optional embodiment, the first contact piece 2 is insulated from the moving part 1 .

[0036] The first contact piece 2 contacts the two slices 5 to form an electrical signal loop 4, and the moving part 1 contacts the electrodes on both sides of the gap on the ground loop to form a ground loop. To avoid mutual influence between the two electrical loops, the first contact piece 2 is fixed to the moving part 1 by insulation.

[0037] An insulating layer is provided between the first contact piece 2 and the moving part 1. The insulating layer is attached to the end face of the abutting end of the moving part 1. In addition to insulating the circuit between the first contact piece 2 and the moving part 1, the insulating layer can also abut against the lamella body 5. When the gap between the end face of the abutting end and the end face of the inner wall end of the sliding groove is too small due to assembly accuracy, the first contact piece 2 abuts against the second structural part 10 of the lamella body 5, and the insulating layer on the end face of the abutting end of the moving part 1 contacts the first structural part 11 of the lamella body 5, avoiding contact between the first structural part 11 and the moving part 1.

[0038] In an optional embodiment, the moving part 1 includes a frame 8 and a contact block 9, the frame 8 is an insulating structure, the trigger assembly cooperates with the frame 8, the frame 8 slides with the shell along a first direction, the contact block 9 can contact the two electrodes, and the contact block 9 is fixedly connected to the frame 8 along the first direction.

[0039] When the frame 8 is engaged with the trigger assembly, the contact block 9 contacts the two electrodes. The contact block 9 is a conductive structure, ensuring a ground circuit. The frame 8 is an insulating structure with an abutment end extending in a first direction. The first contact piece 2 is attached to the end surface of the abutment end. The frame 8 is provided with a channel structure. The contact block 9 is located within the channel structure and slides with the frame 8 in a direction perpendicular to the first direction. The frame 8 has openings in the channel structure on both sides of the end surface facing the electrodes, through which the contact block 9 contacts the electrodes.

[0040] In an optional embodiment, the laminar body 5 is insulated from the moving part 1 .

[0041] The first contact piece 2 contacts the two lamellae 5 to form an electrical signal circuit 4, and the moving part 1 contacts the electrodes on both sides of the interval on the ground circuit to form a ground circuit. In order to avoid the two electrical circuits from influencing each other, an insulating layer is affixed to the end face of the abutting end of the moving part 1. When the gap between the end face of the abutting end and the end face of the inner wall end of the sliding groove is too small due to the assembly accuracy, the insulating layer on the end face of the abutting end of the moving part 1 contacts the lamellae 5, avoiding contact between the lamellae 5 and the moving part 1.

[0042] In an optional embodiment, the first contact piece 2 is located between the split piece and the moving member 1 .

[0043] An insulating layer is attached to the end face of the abutting end of the moving part 1, so that the circuit between the first contact piece 2 and the moving part 1 is insulated. The extension area of ​​the first contact piece 2 on the end face of the abutting end can ensure that when the gap between the end face of the abutting end and the end face of the inner wall end of the sliding groove is too small, the first contact piece 2 contacts the part of the split body 5 except the preset contact part.

[0044] The surge protector provided by the utility model comprises a lightning protection component. The lightning protection component and a moving part 1 in a backup protection signal component are arranged in series on a grounding loop.

[0045] The lightning protection component includes a lightning protection element and a thermal release component. The surge protector has a grounding loop structure, such as a copper busbar, for connecting to an external cable through an interface or the like. The belt body and other components of the lightning protection element and the thermal release component are connected to the grounding loop structure. The two ends of the grounding loop structure are respectively provided with electrodes. The moving part 1 in the backup protection signal component is located between the two electrodes and contacts the electrodes on both sides of the gap on the grounding loop to realize the conduction of the two sections of the grounding loop structure. The action side of the electromagnetic release cooperates with the moving part 1 through structural parts such as a hook body. The action side of the electromagnetic release constrains the moving part 1 through the structural parts, so that the moving part 1 can overcome the elastic force of the spring and maintain contact with the electrodes on both sides of the gap on the grounding loop. When the current flowing through the grounding loop reaches the preset trigger threshold of the electromagnetic release, the current generated by the secondary side of the mutual inductor on the grounding loop causes the electromagnetic release to trip, and the restraining force of the action side of the electromagnetic release on the moving part 1 disappears, so that the moving part 1 moves under the action of the spring to separate from the electrodes on both sides of the gap on the grounding loop, thereby disconnecting the grounding loop.

[0046] It should be noted that any of the above embodiments are illustrative of the present invention rather than limiting thereof, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbols placed between brackets 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 present invention may be implemented by means of hardware comprising several different elements and by means of appropriately programmed computers. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words primary, secondary, previous, and next etc. does not indicate any order. These words may be interpreted as names.

[0047] The above embodiments are only suitable for illustrating the present invention, and are not intended to limit the present invention. Ordinary technicians in the relevant technical field 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 scope of patent protection of the present invention should be defined by the claims.

Claims

1. A backup protection signal component for a surge protector, characterized in that: The invention comprises a trigger component, a circuit component and a moving part (1) capable of moving in a first direction to be separated from two electrodes on a ground loop, wherein the trigger component cooperates with the moving part (1) to limit the movement of the moving part (1) under the action of a spring, and the circuit component comprises a first contact piece (2) and a second contact piece (3) which contact each other to form an electric signal loop (4), and the first contact piece (2) can move with the moving part (1) to be separated from the second contact piece (3).

2. The backup protection signal component according to claim 1, characterized in that: The second contact piece (3) comprises two spaced-apart lamellae (5) respectively electrically connected to the electric signal circuit, and the first contact piece (2) is capable of contacting the two lamellae (5).

3. The backup protection signal component according to claim 2, characterized in that: The movable member (1) is located in the shell and slides with the shell along a first direction. The movable member (1) has an abutting end along the first direction. The shell has an inner wall end corresponding to the abutting end. The movable member (1) can move along the first direction until the end face of the abutting end is away from the end face of the inner wall end. The first contact piece (2) is fixedly arranged on the end face of the abutting end. The two split bodies (5) are fixedly arranged at corresponding positions on the end face of the inner wall end.

4. The backup protection signal component according to claim 3, characterized in that: The lamellae (5) are bent to form a first structural portion (11) and a second structural portion (10), wherein the first structural portion (11) is fixedly arranged on the end surface of the inner wall end, and the second structural portion (10) extends in a direction toward the abutting end, and the first contact piece (2) can abut against the second structural portion (10).

5. The backup protection signal component according to claim 3, characterized in that: The first contact piece (2) is insulated from the moving part (1).

6. The backup protection signal component according to claim 5, characterized in that: The movable member (1) comprises a frame (8) and a contact block (9); the frame (8) is an insulating structure; the trigger assembly cooperates with the frame (8); the frame (8) slides with the housing along a first direction; the contact block (9) can contact the two electrodes; and the contact block (9) is fixedly connected to the frame (8) along the first direction.

7. The backup protection signal component according to claim 6, characterized in that: A channel structure is provided on the frame (8), and the contact block (9) is located in the channel structure and slides with the frame (8) along a direction perpendicular to the first direction.

8. The backup protection signal component according to claim 5, characterized in that: The slice body (5) is insulated and matched with the moving part (1).

9. The backup protection signal component according to claim 8, characterized in that: The first contact piece (2) is located between the split piece and the moving part (1).

10. A surge protector, comprising a lightning protection component, characterized in that: The lightning protection component and the moving part (1) in the backup protection signal component according to any one of claims 1 to 9 are arranged in series on the grounding loop.

Images