A novel type of switch-type surge protector with a tripping structure

Abstract

This utility model discloses a novel tripping structure for a switch-type surge protector, belonging to the technical field of surge protectors. It includes a base with a fixing cover. In this utility model, when the current is too high, the I-shaped fuse slot and the I-shaped fuse block fuse together, causing a meltdown. Simultaneously, high temperature is generated on the electrothermal trigger device and conducted to the bimetallic strip, causing the bimetallic strip to bend and move the second conductive strip away from the first conductive strip, thus achieving thermal tripping. Additionally, when the surge current exceeds the threshold, the electromagnetic coil causes the electromagnet core to generate magnetic attraction. This magnetic attraction attracts the armature, causing the slider to move closer to the electromagnet core, breaking the connection between the I-shaped fuse slot and the I-shaped fuse block, thus achieving electromagnetic tripping. These two tripping methods ensure the effectiveness of the surge protector and demonstrate good practicality.

Description

Technical Field

[0001] This utility model relates to the field of surge protector technology, and more specifically, to a novel switch-type surge protector with a tripping structure. Background Technology

[0002] The tripping structure of a surge protector is a core component of its safety protection function, used to quickly cut off power in the event of surge protector failure or circuit abnormality, preventing fire or equipment damage. The difference between thermal and electromagnetic tripping involves factors such as material properties and welding processes affecting the tripping. Improper welding processes can easily lead to tripping failure or premature tripping, affecting reliability. Traditional thermal tripping structures rely on solder melting to achieve tripping, but uneven heat distribution during varistor heating can easily lead to incomplete melting of local solder, causing tripping delays or failures, and even posing a fire risk due to continuous arcing. Furthermore, improper control of the area, amount of solder, and welding method at low-temperature solder joints can easily lead to premature triggering or ineffective disconnection, reducing protection reliability. These shortcomings indicate that existing tripping technologies need further optimization in areas such as thermal management, structural simplification, and multi-mechanism coordination to improve safety and reliability. Therefore, we propose a novel switch-type surge protector with a new tripping structure. Utility Model Content

[0003] In view of the problems mentioned in the background art above, the purpose of this utility model is to provide a novel tripping structure for a switch-type surge protector.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] A novel tripping-type surge protector includes a base with a fixed cover. A grounding mechanism and a first wiring mechanism are located at one end of the top surface of the base, and a second wiring mechanism is located at the other end of the top surface of the base. A movable groove is located on the top of the fixed cover, and a red observation surface is provided within the inner cavity of the movable groove. A slider is slidably connected to the inner cavity of the fixed cover. One end of the slider extends into the inner cavity of the movable groove and is fixedly connected to a green stop. A first conductive plate is fixedly connected to one side of the slider, and an I-shaped fuse groove is located at the top of the first conductive plate. An electrothermal triggering device is located at the end of the fixed cover, and a [missing information - likely a component or feature] is located on one side of the electrothermal triggering device. A bimetallic sheet has a second conductive sheet fixedly connected to the end of a copper sheet on one side. An I-shaped fuse block is provided on the side of the second conductive sheet. The end of the I-shaped fuse block is fitted into the inner cavity of the I-shaped fuse groove. The I-shaped fuse block and the I-shaped fuse groove are connected by solder. A spring is provided between the fixed cover and the slider. An armature is fixedly connected to the side of the slider. A first conductive electrode is fixedly connected to the top surface of the base. An electromagnetic coil is fixedly connected to the top of one end of the first conductive electrode. A conductive wire is fixedly connected to the end of the electromagnetic coil. The end of the conductive wire is connected to the first conductive sheet. An electromagnet core is fixedly connected to the inner wall of the fixed cover. The electromagnet core is fitted into the inner side of the electromagnetic coil.

[0006] As a preferred embodiment of the present invention, the grounding mechanism includes a third terminal block and a third conductive electrode fixedly connected to the top surface of the base. One end of the third conductive electrode is disposed in the inner cavity of the third terminal block, and the other end of the third conductive electrode extends into the inner cavity of the fixed cover and is fixedly connected to a conductive rod. A third screw is threaded onto the third terminal block.

[0007] As a preferred embodiment of the present invention, the first wiring mechanism includes a first wiring seat fixedly connected to the top surface of the base, a first screw threaded onto the first wiring seat, and the other end of the first conductive electrode extending to the outside of the fixed cover and into the inner cavity of the first wiring seat.

[0008] As a preferred embodiment of the present invention, the second wiring mechanism includes a second terminal block and a second conductive electrode fixedly connected to the top surface of the base. One end of the second conductive electrode is located in the inner cavity of the second terminal block, and the other end of the second conductive electrode is connected to the electric heating triggering device. A second screw is threaded onto the second terminal block.

[0009] In a preferred embodiment of this utility model, a first hook is provided on the side of the fixing cover, a second hook is provided on the side of the slider, one end of the spring is connected to the first hook, and the other end of the spring is connected to the second hook.

[0010] As a preferred embodiment of this utility model, a protective cover is fitted on the outer side of the fixed cover, and an observation port is provided on the top surface of the protective cover above the red observation surface.

[0011] In a preferred embodiment of this utility model, a signal transmission connector is provided on the base, and a contact sensor is fixedly installed on the inner wall of the moving groove. The contact sensor and the signal transmission connector are electrically connected.

[0012] The advantages of this utility model are:

[0013] In this invention, when the current is too high, the I-shaped fuse slot and the I-shaped fuse block fuse together, causing a meltdown. Simultaneously, high temperature is generated on the electrothermal trigger device and conducted to the bimetallic strip, causing it to bend and move the second conductive strip away from the first conductive strip. This assists in tripping the second and first conductive strips, achieving thermal tripping. Additionally, when the surge current exceeds the threshold, the electromagnetic coil causes the electromagnet core to generate magnetic attraction. This magnetic attraction attracts the armature, causing the slider to move closer to the electromagnet core, pulling the I-shaped fuse slot and the I-shaped fuse block apart, achieving electromagnetic tripping. These two tripping methods ensure the surge protector's effectiveness, promptly physically disconnecting the circuit when the surge exceeds the protection element's tolerance, preventing equipment damage and fire risks. The use of I-shaped three-dimensional welding between the second and first conductive strips instead of planar welding increases the contact area and heat conduction efficiency of the welding point, enhancing tripping reliability and practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the fixing cover of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the second conductive electrode of this utility model.

[0017] Figure 4 This is a schematic diagram of the internal structure of the fixing cover of this utility model.

[0018] Explanation of the labels in the diagram:

[0019] 1. Base; 2. Fixing cover; 3. Grounding mechanism; 4. Moving groove; 5. Slider; 6. Green stop block; 7. First conductive sheet; 8. I-shaped fuse slot; 9. Electrothermal trigger device; 10. Bimetallic strip; 11. Second conductive sheet; 12. I-shaped fuse block; 13. First wiring mechanism; 14. Second wiring mechanism; 15. First conductive electrode; 16. Electromagnetic coil; 17. Conductive wire; 18. Armature; 19. Electromagnetic core; 20. Spring; 21. First hook; 22. Second hook; 23. Third terminal block; 24. Third conductive electrode; 25. Third screw; 26. Conductive rod; 27. First terminal block; 28. First screw; 29. ​​Second terminal block; 30. Second screw; 31. Second conductive electrode; 32. Red observation surface; 33. Protective cover; 34. Observation port; 35. Contact sensor; 36. Signal transmission connector. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0023] Please see Figure 1-4A novel tripping surge protector for switch-type surge protection includes a base 1, a fixed cover 2 mounted on the base 1, a grounding mechanism 3 at one end of the top surface of the base 1, a first wiring mechanism 13 at one end of the top surface of the base 1, a second wiring mechanism 14 at the other end of the top surface of the base 1, a movable groove 4 on the top of the fixed cover 2, a red observation surface 32 inside the movable groove 4, a slider 5 slidably connected to the inner cavity of the fixed cover 2, one end of the slider 5 extending into the inner cavity of the movable groove 4 and fixedly connected to a green stop block 6, a first conductive sheet 7 fixedly connected to one side of the slider 5, an I-shaped fuse groove 8 at the top of the first conductive sheet 7, an electrothermal triggering device 9 at the end of the fixed cover 2, and a bimetallic strip 10 on one side of the electrothermal triggering device 9. A second conductive sheet 11 is fixedly connected to the end of a copper sheet on one side of the metal sheet 10. An I-shaped fuse block 12 is provided on the side of the second conductive sheet 11. The end of the I-shaped fuse block 12 is fitted into the inner cavity of the I-shaped fuse groove 8. The I-shaped fuse block 12 and the I-shaped fuse groove 8 are connected by soldering. A spring 20 is provided between the fixed cover 2 and the slider 5. An armature 18 is fixedly connected to the side of the slider 5. A first conductive electrode 15 is fixedly connected to the top surface of the base 1. An electromagnetic coil 16 is fixedly connected to the top of one end of the first conductive electrode 15. A conductive wire 17 is fixedly connected to the end of the electromagnetic coil 16. The end of the conductive wire 17 is connected to the first conductive sheet 7. An electromagnet core 19 is fixedly connected to the inner wall of the fixed cover 2. The electromagnet core 19 is fitted into the inner side of the electromagnetic coil 16.

[0024] In this embodiment, the contact area and heat conduction efficiency of the welding point are improved by the cooperation of the I-shaped fuse groove 8 and the I-shaped fuse block 12, thereby enhancing the reliability of tripping. Low melting point solder is used between the I-shaped fuse groove 8 and the I-shaped fuse block 12.

[0025] For details, please refer to Figure 1 and Figure 4 The grounding mechanism 3 includes a third terminal block 23 and a third conductive electrode 24 fixedly connected to the top surface of the base 1. One end of the third conductive electrode 24 is disposed in the inner cavity of the third terminal block 23, and the other end of the third conductive electrode 24 extends into the inner cavity of the fixing cover 2 and is fixedly connected to a conductive rod 26. A third screw 25 is threaded onto the third terminal block 23.

[0026] In this embodiment, the grounding wire inserted into the inner cavity of the third terminal block 23 is pressed and fixed by the third screw 25. In addition, the position of the conductive rod 26 corresponds to the position of the first conductive piece 7, so that the conductive rod 26 can contact the first conductive piece 7 in order to conduct the current to the ground.

[0027] For details, please refer to Figure 1 and Figure 2The first wiring mechanism 13 includes a first terminal block 27 fixedly connected to the top surface of the base 1. A first screw 28 is threaded onto the first terminal block 27. The other end of the first conductive electrode 15 extends to the outside of the fixed cover 2 and into the inner cavity of the first terminal block 27.

[0028] In this embodiment, the wire inserted into the inner cavity of the first terminal block 27 is pressed and fixed by the first screw 28, so that the wire is connected to the first conductive electrode 15.

[0029] For details, please refer to Figure 3 The second wiring mechanism 14 includes a second wiring seat 29 and a second conductive electrode 31 fixedly connected to the top surface of the base 1. One end of the second conductive electrode 31 is located in the inner cavity of the second wiring seat 29, and the other end of the second conductive electrode 31 is connected to the electric heating trigger device 9. A second screw 30 is threaded onto the second wiring seat 29.

[0030] In this embodiment, the wire inserted into the inner cavity of the second terminal block 29 is pressed and fixed by the second screw 30, so that the wire is connected to the second conductive electrode 31.

[0031] For details, please refer to Figure 3 The side of the fixed cover 2 is provided with a first hook 21, the side of the slider 5 is provided with a second hook 22, one end of the spring 20 is connected to the first hook 21, and the other end of the spring 20 is connected to the second hook 22.

[0032] In this embodiment, the spring 20 is installed and connected by the first hook 21 and the second hook 22. When it is not disengaged, the spring 20 is in a stretched state.

[0033] For details, please refer to Figure 1 and Figure 2 A protective cover 33 is fitted on the outside of the fixed cover 2, and an observation port 34 is provided on the top surface of the protective cover 33 above the red observation surface 32.

[0034] In this embodiment, the outer side of the fixed cover 2 is protected by the protective cover 33. The protective cover 33 is installed on the internal threaded post on the base 1 by screws. The condition of the inner cavity of the moving groove 4 is controlled through the observation port 34. When the green stop block 6 is seen, it indicates that there is no disengagement. When the red observation surface 32 is seen, it indicates that the disengagement has occurred.

[0035] For details, please refer to Figure 3 A signal transmission connector 36 is provided on the base 1, and a contact sensor 35 is fixedly installed on the inner wall of the moving groove 4. The contact sensor 35 and the signal transmission connector 36 are electrically connected.

[0036] In this embodiment, when the slider 5 moves, contact will occur between the slider 5 and the contact sensor 35. The tripping information is transmitted to the external system through the signal transmission connector 36 and the connection line of the peripheral device for timely processing.

[0037] Working principle: In use, two wires are inserted into the first terminal block 27 and the second terminal block 29 respectively. By rotating the first screw 28, the end of one wire contacts the first conductive electrode 15. By rotating the second screw 30, the end of the other wire contacts the second conductive electrode 31. The grounding wire is inserted into the third terminal block 23. By rotating the third screw 25, the grounding wire contacts the third conductive electrode 24. This allows current to flow normally through the first conductive electrode 15, electromagnetic coil 16, conductive wire 17, first conductive piece 7, I-shaped fuse block 12, second conductive piece 11, copper sheet on bimetallic strip 10, electrothermal trigger device 9, and second conductive electrode 31. When the current flows and the temperature of the electrothermal trigger device 9 becomes too high, the high temperature causes the end of the bimetallic strip 10 to deform away from the first conductive piece 7, separating the bimetallic strip 10 from the moving groove 4. Simultaneously, the I-shaped fuse groove 8 and the I-shaped fuse block 1... A fuse may also break between the two, causing the circuit to disconnect. In addition, when the surge current exceeds the threshold, the electromagnetic coil 16 causes the electromagnet core 19 to generate a magnetic attraction force. The magnetic attraction force of the electromagnet core 19 attracts the armature 18, thereby causing the slider 5 to move closer to the electromagnet core 19, so that the I-shaped fuse slot 8 and the I-shaped fuse block 12 are disconnected, so that dual protection can be provided by thermal tripping and electromagnetic tripping. After the slider 5 trips, the elastic force of the spring 20 drives the slider 5 to move. The slider 5 drives the green stop block 6 to move away from above the red observation surface 32, so that the red observation surface 32 can be viewed from the observation port 34, indicating that the surge protector has tripped. In addition, the slider 5 contacts the contact sensor 35, and the tripping information is transmitted to the external system through the signal transmission connector 36 and the signal transmission line. After the slider 5 moves, the ends of the first conductive plate 7 and the conductive rod 26 contact each other, so that the current is conducted from the first conductive plate 7, the conductive rod 26 and the grounding wire to the ground.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A new type of switch mode surge protector with a new tripping mechanism, comprising a base (1), characterized in that: A fixed cover (2) is provided on the base (1). A grounding mechanism (3) is provided at one end of the top surface of the base (1). A first wiring mechanism (13) is provided at one end of the top surface of the base (1). A second wiring mechanism (14) is provided at the other end of the top surface of the base (1). A moving groove (4) is provided on the top of the fixed cover (2). A red observation surface (32) is provided in the inner cavity of the moving groove (4). A slider (5) is slidably connected to the inner cavity of the fixed cover (2). One end of the slider (5) extends into the inner cavity of the moving groove (4) and is fixedly connected to a green stop block (6). A first conductive sheet (7) is fixedly connected to one side of the slider (5). An I-shaped fuse groove (8) is provided at the top of the first conductive sheet (7). An electric heating trigger device (9) is provided at the end of the fixed cover (2). A bimetallic strip (10) is provided on one side of the electric heating trigger device (9). A copper strip is provided on one side of the bimetallic strip (10). A second conductive sheet (11) is fixedly connected to the end of the sheet. An I-shaped fuse block (12) is provided on the side of the second conductive sheet (11). The end of the I-shaped fuse block (12) is sleeved into the inner cavity of the I-shaped fuse groove (8). The I-shaped fuse block (12) and the I-shaped fuse groove (8) are connected by soldering. A spring (20) is provided between the fixed cover (2) and the slider (5). An armature (18) is fixedly connected to the side of the slider (5). A first conductive electrode (15) is fixedly connected to the top surface of the base (1). An electromagnetic coil (16) is fixedly connected to the top of one end of the first conductive electrode (15). A conductive wire (17) is fixedly connected to the end of the electromagnetic coil (16). The end of the conductive wire (17) is connected to the first conductive sheet (7). An electromagnetic core (19) is fixedly connected to the inner wall of the fixed cover (2). The electromagnetic core (19) is sleeved into the inner side of the electromagnetic coil (16). The grounding mechanism (3) includes a third terminal block (23) and a third conductive electrode (24) fixedly connected to the top surface of the base (1). One end of the third conductive electrode (24) is disposed in the inner cavity of the third terminal block (23), and the other end of the third conductive electrode (24) extends into the inner cavity of the fixing cover (2) and is fixedly connected to a conductive rod (26). A third screw (25) is threaded onto the third terminal block (23). The first wiring mechanism (13) includes a first terminal block (27) fixedly connected to the top surface of the base (1), a first screw (28) is threaded onto the first terminal block (27), and the other end of the first conductive electrode (15) extends to the outside of the fixed cover (2) and into the inner cavity of the first terminal block (27). The second wiring mechanism (14) includes a second wiring seat (29) and a second conductive electrode (31) fixedly connected to the top surface of the base (1). One end of the second conductive electrode (31) is located in the inner cavity of the second wiring seat (29), and the other end of the second conductive electrode (31) is connected to the electric heating trigger device (9). A second screw (30) is threaded onto the second wiring seat (29). The side of the fixed cover (2) is provided with a first hook (21), the side of the slider (5) is provided with a second hook (22), one end of the spring (20) is connected to the first hook (21), and the other end of the spring (20) is connected to the second hook (22); The outer side of the fixed cover (2) is fitted with a protective cover (33), and an observation port (34) is provided on the top surface of the protective cover (33) and above the red observation surface (32). A signal transmission connector (36) is provided on the base (1), and a contact sensor (35) is fixedly installed on the inner wall of the moving groove (4). The contact sensor (35) and the signal transmission connector (36) are electrically connected.

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