A drop-out fuse

Abstract

The utility model discloses a drop-out fuse, belonging to the technical field of drop-out fuses. It comprises an insulator, an upper bracket is provided at the upper end of one side of the insulator, a lower bracket is provided at the lower end of one side of the insulator, a first hinged seat is provided at the upper end of the lower bracket, and a second hinged seat is provided at one side of the first hinged seat. The utility model solves the problem in the prior art that when the fuse of the drop-out fuse fails, it is difficult for the staff to find that it has fallen, causing the fusion tube to fall onto other cables and cause certain impacts. By providing a contact warning component and a flashing light, when the fusion tube falls, it presses on the pressing block due to its own gravity, causing the pressing block to move downward, thereby driving the connecting rod downward, causing the first copper block to contact the second copper block, and since a loop is formed between the flashing light and the first copper block and the second copper block, the flashing light emits a sound and light warning, thereby reminding the staff to quickly find and repair.

Description

Technical Field

[0001] The utility model relates to the technical field of drop-out fuses, in particular to a drop-out fuse. Background Art

[0002] A drop-out fuse is an outdoor high-voltage protective device installed on the high-voltage side of a distribution transformer or on a branch line of a distribution line. It is used for short-circuit and overload protection of transformers and lines, and for breaking and closing load currents. A drop-out fuse consists of an insulator and a fuse tube. The fuse tube consists of an inner arc-extinguishing tube and an outer phenolic paper tube or epoxy glass cloth tube. A Chinese patent with publication number CN209282160U discloses a drop-out fuse. This patent does not cause the fuse to break when replacing the fuse, which can eliminate material waste and shorten fuse replacement time.

[0003] However, the above-mentioned prior art solutions also have the following defects:

[0004] When the fuse of the existing drop-out type fuse fails, it is difficult for the staff to find that it has fallen, causing the fuse tube to fall onto other cables and cause certain impacts, and the installation between the fuse tube and the disconnection device is more troublesome. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0006] To this end, one purpose of the utility model is to provide a drop-type fuse. By setting a contact warning component and a flashing light, when the fuse tube falls, it is pressed on the pressure block due to its own gravity, causing the pressure block to move downward, thereby driving the connecting rod downward, so that the first copper block contacts the second copper block. Since a circuit is formed between the flashing light and the first copper block and the second copper block, the flashing light emits a sound and light warning, thereby reminding the staff to quickly discover and repair it.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drop-out fuse, comprising an insulator, an upper bracket is provided at the upper end of one side of the insulator, a lower bracket is provided at the lower end of one side of the insulator, a first hinged seat is provided at the upper end of the lower bracket, a second hinged seat is provided at one side of the first hinged seat, a fuse tube is provided at one side of the insulator, and the lower moving contact of the fuse tube is rotatably connected to the first hinged seat, a contact warning component is provided at one side of the lower bracket, and a flashing light is provided at the side of the upper end of the lower bracket close to the insulator.

[0008] Preferably, a guide rail is provided on one side of the melting tube, a slider is provided inside the guide rail, a connecting rod is rotatably provided on the second hinge seat, and the connecting rod is connected to the slider.

[0009] Preferably, an elastic contact piece is arranged below the upper bracket, a through hole is arranged inside the elastic contact piece, and the elastic contact piece is fixedly connected to the upper bracket via a spring.

[0010] Preferably, a guide frame is provided below the elastic contact piece, and the guide frame is fixedly connected to the upper bracket, and an opening is provided on a side of the guide frame away from the insulator.

[0011] Preferably, the contact warning component includes a support block, which is fixedly connected to the lower bracket. A limiting rod is provided at the upper end of the support block, and a spring 2 is provided on the outer wall of the limiting rod. Both ends of the spring 2 are fixedly connected to the support block and the pressure block respectively.

[0012] Preferably, a second copper block is arranged on one side of the limiting rod, a first copper block is arranged above the second copper block, and the first copper block is fixedly connected to the pressing block via a connecting rod.

[0013] Preferably, a storage battery is provided inside the flashing light, and the first copper block and the second copper block are both electrically connected to the flashing light.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. A drop-out fuse of the utility model is provided with a contact warning assembly and a flashing light. When the fusion tube falls, it is pressed on the pressing block due to its own gravity, so that the pressing block moves downward, and then drives the connecting rod downward, so that the first copper block contacts the second copper block. Since a circuit is formed between the flashing light and the first copper block and the second copper block, the flashing light emits a sound and light warning, thereby reminding the staff to quickly discover and repair.

[0016] 2. A drop-out fuse of the utility model, when the fuse tube rotates around the first hinge seat, the slider connected to the connecting rod slides in the guide rail, so that the connecting rod rotates around the second hinge seat until the slider slides to the end of the guide rail, which limits the rotation of the fuse tube, so that the fuse tube cannot continue to fall after contacting the contact warning component, and enters the guide frame through the opening of the guide frame through the fuse tube. At the same time, after the upper moving contact of the fuse tube contacts the elastic contact piece, the spring is deformed until the upper moving contact of the fuse tube enters the through hole, and the spring is reset to limit the fuse tube, and the installation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the melting tube in the utility model in a falling state;

[0019] Figure 3 For the utility model Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0020] Figure 4 For the utility model Figure 1 Schematic diagram of the enlarged structure of part B in the middle.

[0021] In the figure: 1. insulator; 2. upper bracket; 3. lower bracket; 4. melting tube; 5. contact warning assembly; 6. flashing light; 7. connecting rod; 8. guide rail; 201. guide frame; 202. elastic contact piece; 203. spring one; 204. through hole; 301. first hinge seat; 302. second hinge seat; 501. support block; 502. second copper block; 503. first copper block; 504. connecting rod; 505. pressure block; 506. limit rod; 507. spring two. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In order to solve the technical problems in the prior art that when the fuse of the drop-out type fuse fails, it is difficult for the staff to find that it has fallen, causing the fuse tube to fall onto other cables and causing certain impacts, and the installation between the fuse tube and the disconnection device is more troublesome, please refer to Figure 1-4 , providing the following technical solutions:

[0024] In this embodiment, a drop-out fuse includes an insulator 1, an upper bracket 2 is provided at the upper end of one side of the insulator 1, a lower bracket 3 is provided at the lower end of one side of the insulator 1, a first hinged seat 301 is provided at the upper end of the lower bracket 3, a second hinged seat 302 is provided at one side of the first hinged seat 301, a fuse tube 4 is provided at one side of the insulator 1, and the lower moving contact of the fuse tube 4 is rotatably connected to the first hinged seat 301, a contact warning component 5 is provided at one side of the lower bracket 3, and a fuse is provided inside the fuse tube 4. When the fuse is blown, the upper moving contact of the fuse tube 4 moves, and the inclined fuse tube 4 falls downward until the fuse tube 4 contacts the contact warning component 5.

[0025] In this embodiment, a guide rail 8 is provided on one side of the melting tube 4, and a slider is provided inside the guide rail 8. A connecting rod 7 is rotatably provided on the second hinge seat 302, and the connecting rod 7 is connected to the slider. When the melting tube 4 rotates around the first hinge seat 301, the slider connected to the connecting rod 7 slides in the guide rail 8, so that the connecting rod 7 rotates around the second hinge seat 302 until the slider slides to the end of the guide rail 8, which limits the rotation of the melting tube 4, so that the melting tube 4 cannot continue to fall after contacting the contact warning component 5.

[0026] In this embodiment, an elastic contact piece 202 is arranged below the upper bracket 2, and the upper moving contact of the melting tube 4 is electrically connected to the elastic contact piece 202. A through hole 204 is arranged inside the elastic contact piece 202. The elastic contact piece 202 is fixedly connected to the upper bracket 2 through a spring 203. A guide frame 201 is arranged below the elastic contact piece 202, and the guide frame 201 is fixedly connected to the upper bracket 2. An opening is arranged on the side of the guide frame 201 away from the insulator 1. The melting tube 4 enters the guide frame 201 through the opening of the guide frame 201. At the same time, after the upper moving contact of the melting tube 4 contacts the elastic contact piece 202, the spring 203 is deformed until the upper moving contact of the melting tube 4 enters the through hole 204. The spring 203 is reset, so that the melting tube 4 is limited, and the installation is simple.

[0027] In this embodiment, the contact warning component 5 includes a support block 501, which is fixedly connected to the lower bracket 3. A limit rod 506 is arranged on the upper end of the support block 501, and a second spring 507 is arranged on the outer wall of the limit rod 506. The two ends of the second spring 507 are respectively fixedly connected to the support block 501 and the pressure block 505. A second copper block 502 is arranged on one side of the limit rod 506, and a first copper block 503 is arranged above the second copper block 502. The first copper block 503 is fixedly connected to the pressure block 505 through a connecting rod 504. When the melting tube 4 falls, it presses on the pressure block 505 due to its own gravity, so that the pressure block 505 moves downward, thereby driving the connecting rod 504 downward, so that the first copper block 503 contacts the second copper block 502, and the second spring 507 has a reset function.

[0028] A flashing light 6 is provided on one side of the upper end of the lower bracket 3 close to the insulator 1. A battery is provided inside the flashing light 6. The first copper block 503 and the second copper block 502 are both electrically connected to the flashing light 6. A circuit is formed between the flashing light 6 and the first copper block 503 and the second copper block 502, so that the flashing light 6 emits sound and light warnings, thereby reminding the staff to quickly discover and repair.

[0029] Working principle: When in use, the melting tube 4 is manually pushed into the guide frame 201 through the opening of the guide frame 201. At the same time, after the upper moving contact of the melting tube 4 contacts the elastic contact piece 202, the spring 1 203 is deformed until the upper moving contact of the melting tube 4 enters the through hole 204. The spring 1 203 is reset to limit the melting tube 4. A fuse is arranged inside the melting tube 4. When the fuse is blown, the upper moving contact of the melting tube 4 moves, and the inclined melting tube 4 falls downward until the melting tube 4 contacts the contact warning component 5. When the melting tube 4 falls, it presses on the pressing block 505 due to its own gravity, so that the pressing block 505 moves downward, and the contact warning component 5 is pressed downward. The connecting rod 504 is driven downward to make the first copper block 503 contact the second copper block 502. Since a loop is formed between the flashing light 6 and the first copper block 503 and the second copper block 502, the flashing light 6 emits a sound and light warning, thereby reminding the staff to quickly discover and repair it. When the melting tube 4 rotates around the first hinge seat 301, the slider connected to the connecting rod 7 slides in the guide rail 8, causing the connecting rod 7 to rotate around the second hinge seat 302 until the slider slides to the end of the guide rail 8, which limits the rotation of the melting tube 4, so that the melting tube 4 cannot continue to fall after contacting the contact warning component 5.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drop-out fuse, comprising an insulator (1), characterized in that: An upper bracket (2) is provided at the upper end of one side of the insulator (1), a lower bracket (3) is provided at the lower end of one side of the insulator (1), a first hinge seat (301) is provided at the upper end of the lower bracket (3), a second hinge seat (302) is provided at one side of the first hinge seat (301), a fuse tube (4) is provided at one side of the insulator (1), and a lower moving contact of the fuse tube (4) is rotatably connected to the first hinge seat (301), a contact warning component (5) is provided at one side of the lower bracket (3), and a flashing light (6) is provided at the upper end of the lower bracket (3) on the side close to the insulator (1).

2. A drop-out fuse according to claim 1, characterized in that: A guide rail (8) is provided on one side of the melting tube (4), a slider is provided inside the guide rail (8), a connecting rod (7) is rotatably provided on the second hinge seat (302), and the connecting rod (7) is connected to the slider.

3. A drop-out fuse according to claim 1, characterized in that: An elastic contact sheet (202) is arranged below the upper bracket (2), a through hole (204) is arranged inside the elastic contact sheet (202), and the elastic contact sheet (202) is fixedly connected to the upper bracket (2) via a spring 1 (203).

4. A drop-out fuse according to claim 3, characterized in that: A guide frame (201) is provided below the elastic contact piece (202), and the guide frame (201) is fixedly connected to the upper bracket (2), and an opening is provided on a side of the guide frame (201) away from the insulator (1).

5. A drop-out fuse according to claim 1, characterized in that: The contact warning component (5) comprises a support block (501), the support block (501) is fixedly connected to the lower bracket (3), a limit rod (506) is arranged at the upper end of the support block (501), a second spring (507) is arranged on the outer wall of the limit rod (506), and two ends of the second spring (507) are respectively fixedly connected to the support block (501) and the pressure block (505).

6. A drop-out fuse according to claim 5, characterized in that: A second copper block (502) is arranged on one side of the limiting rod (506), a first copper block (503) is arranged above the second copper block (502), and the first copper block (503) is fixedly connected to the pressing block (505) via a connecting rod (504).

7. A drop-out fuse according to claim 6, characterized in that: A storage battery is arranged inside the flashing light (6), and the first copper block (503) and the second copper block (502) are both electrically connected to the flashing light (6).

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