High-voltage direct-current fuse

Abstract

The utility model provides a high-voltage direct-current fuse which comprises a ceramic tube body, and the top and the bottom of the ceramic tube body are respectively provided with a first cover plate and a second cover plate through an adjusting mechanism and a convex ring. The first contact knife and the first cover plate are arranged to be of an integrated structure, the second contact knife and the second cover plate are arranged to be of an integrated structure, the first contact knife and the second contact knife do not need to be fixed independently, the first contact knife and the second contact knife can be limited and installed through the convex ring, the first contact knife and the second contact knife can limit the conductive cap, and the conductive cap can be installed conveniently. The two ends of the fusing core can be conveniently and rapidly aligned with the slots, the bolts can drive the conductive caps to slide in the first contact knife and the second contact knife by rotating the bolts, so that the two ends of the fusing core can be inserted into the slots, and meanwhile, the first cover plate and the second cover plate can be conveniently and rapidly installed at the two ends of the ceramic tube body through mutual limiting of the sliding rods and the limiting rings. The operation is simple, the production efficiency of the high-voltage direct-current fuse can be improved, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of high voltage DC fuse technology, specifically a high voltage DC fuse. Background Technology

[0002] High-voltage DC fuses are used to protect electrical equipment from damage caused by overload and short-circuit currents.

[0003] Chinese utility model patent with announcement number CN216980483U discloses a high-voltage DC fuse, including a tube body, a plurality of fusible elements disposed within the tube body, contact blades disposed at both ends of the tube body, and fixing members disposed at both ends of the tube body; two fixing members are detachably connected to both ends of the tube body; the contact blades are detachably connected to the ends of the fixing members away from the tube body; the plurality of fusible elements pass through the fixing members, and both ends of the fusible elements are respectively in contact with the two contact blades.

[0004] The contact blade and the fixing component in the above technical solution are set separately. Therefore, during the assembly process, one end of the contact blade needs to be installed inside the mounting groove and fixed. The fusible element and the limiting groove also need to be aligned with each other to install the fixing component at both ends of the tube. The operation is relatively complicated and reduces the production efficiency of high voltage DC fuses.

[0005] Therefore, this utility model provides a high-voltage DC fuse. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a high-voltage DC fuse that solves the problems mentioned in the background section. This invention integrates the first contact blade and the first cover plate into a single unit, and the second contact blade and the second cover plate into a single unit. This eliminates the need for separate fixing of the first and second contact blades. Furthermore, the convex ring and the limiting action of the first and second contact blades allow for quick alignment of the two ends of the fuse core with the slot. Simultaneously, the mutual limiting action of the sliding rod and the limiting ring facilitates the rapid installation of the first and second cover plates at both ends of the ceramic tube. The operation is simple, improving the production efficiency of this high-voltage DC fuse and making it highly practical.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a high-voltage DC fuse, comprising a ceramic tube body, wherein a first cover plate and a second cover plate are respectively installed on the top and bottom of the ceramic tube body through an adjustment mechanism and a convex ring, and a first contact blade and a second contact blade are respectively fixedly installed inside the first cover plate and the second cover plate, the adjustment mechanism includes a conductive cap, the conductive cap is slidably installed inside the first contact blade and the second contact blade, and a limit mechanism is symmetrically arranged on both sides of one end of the conductive cap, the limit mechanism including a sliding rod, and limit rings are symmetrically fixedly arranged on the inner walls of the top and bottom ends of the ceramic tube body.

[0008] Furthermore, both the first and second contact blades are L-shaped, and mounting holes are provided inside the outer ends of the first and second contact blades. The convex rings are symmetrically fixed at the top and bottom of the ceramic tube body. The convex rings are inserted into the inside of the first and second cover plates, and one end of the first and second contact blades is snapped into the inside of the convex rings.

[0009] Furthermore, the slide rod is symmetrically and slidably installed inside both sides of one end of the conductive cap, and a spring is fixedly installed between the inner end of the slide rod and the inner wall of the conductive cap.

[0010] Furthermore, an inclined surface is provided at the corresponding limiting ring position at the other end of the slide rod, and the slide rod is snapped and installed inside the limiting ring.

[0011] Furthermore, an installation groove is provided at the center of the interior of the ceramic tube, and a fusible core is installed inside the installation groove.

[0012] Furthermore, the two ends of the fuse core are suspended, and a slot is opened inside one end of the conductive cap, with both ends of the fuse core being inserted and installed inside the slot.

[0013] Furthermore, the conductive cap is made of copper, and a bolt is installed inside the other end of the conductive cap to limit rotation.

[0014] Furthermore, the bolts are screwed into the inside of the first cover plate and the second cover plate, and grooves are provided inside the first and second contact blades at the positions corresponding to the slide rods.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a high-voltage DC fuse in which the first contact and the first cover plate are integrated into one structure, and the second contact and the second cover plate are also integrated into one structure. This eliminates the need for separate fixing of the first and second contacts. Furthermore, the convex rings can limit and install the first and second contacts, and the first and second contacts can limit the conductive caps, facilitating quick and easy alignment of the two ends of the fuse core with the slot. Rotating the bolts causes the conductive caps to slide inside the first and second contacts, allowing the two ends of the fuse core to be inserted into the slot. Simultaneously, the mutual limiting of the sliding rod and the limiting rings facilitates the quick and easy installation of the first and second cover plates at both ends of the ceramic tube. The operation is simple, improving the production efficiency of this high-voltage DC fuse and making it highly practical. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a high-voltage DC fuse according to the present invention;

[0017] Figure 2 This is a front cross-sectional view of a high-voltage DC fuse according to the present invention;

[0018] Figure 3 This utility model relates to a high-voltage DC fuse. Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a structural diagram of the second cover plate of a high-voltage DC fuse according to the present invention;

[0020] Figure 5 This is a cross-sectional view of the ceramic tube of a high-voltage DC fuse according to this utility model;

[0021] In the diagram: 1. Ceramic tube body; 2. First cover plate; 3. Second cover plate; 4. First contact blade; 5. Second contact blade; 6. Adjustment mechanism; 7. Mounting hole; 8. Bolt; 9. Conductive cap; 10. Mounting groove; 11. Fusible core; 12. Limiting ring; 13. Slide rod; 14. Spring; 15. Slot; 16. Raised ring. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1 to 5This utility model provides a technical solution: a high-voltage DC fuse, including a ceramic tube 1. The top and bottom of the ceramic tube 1 are respectively equipped with a first cover plate 2 and a second cover plate 3 via an adjustment mechanism 6 and a convex ring 16. A first contact 4 and a second contact 5 are respectively fixedly installed inside the first cover plate 2 and the second cover plate 3. The adjustment mechanism 6 includes a conductive cap 9, which is slidably installed inside the first contact 4 and the second contact 5. Limiting mechanisms are symmetrically arranged on both sides of one end of the conductive cap 9. The limiting mechanism includes a slide rod 13. Limiting rings 12 are symmetrically fixed on the inner walls of the top and bottom ends of the ceramic tube 1. The first cover plate 2 and the first contact 4 are an integral structure, and the second cover plate 3 and the second contact 5 are an integral structure. It is not necessary to fix the first contact 4 and the second contact 5 separately, which simplifies the assembly steps of the high-voltage DC fuse and facilitates the improvement of the production efficiency of the high-voltage DC fuse.

[0024] In this embodiment, the first contact 4 and the second contact 5 are both L-shaped. The outer ends of the first contact 4 and the second contact 5 are provided with mounting holes 7. The convex rings 16 are symmetrically fixed at the top and bottom of the ceramic tube 1. The convex rings 16 are inserted into the inside of the first cover plate 2 and the second cover plate 3. One end of the first contact 4 and the second contact 5 is snapped into the inside of the convex rings 16. The convex rings 16 can limit the first contact 4 and the second contact 5, which facilitates the subsequent alignment operation between the slot 15 and the fuse core 11. The mounting holes 7 facilitate the installation of the high-voltage DC fuse.

[0025] In this embodiment, the slide rod 13 is symmetrically and slidably installed inside both sides of one end of the conductive cap 9. A spring 14 is fixedly installed between the inner end of the slide rod 13 and the inner wall of the conductive cap 9. An inclined surface is provided at the corresponding position of the limiting ring 12 at the other end of the slide rod 13. The slide rod 13 is snapped into the inner side of the limiting ring 12. When the conductive cap 9 is adjusted, the conductive cap 9 drives the slide rod 13 to disengage from the limiting ring 12, and the inclined surface presses the slide rod 13, causing the slide rod 13 to slide into the interior of the conductive cap 9 and compress the spring 14. The slide rod 13 can also be blocked by the elastic force of the spring 14 on the inner side of the limiting ring 12, thereby facilitating the fixed installation of the first cover plate 2 and the second cover plate 3. The operation is simple.

[0026] In this embodiment, an installation groove 10 is provided at the center of the ceramic tube 1. A fuse core 11 is installed inside the installation groove 10, with both ends of the fuse core 11 suspended. A slot 15 is provided inside one end of the conductive cap 9. Both ends of the fuse core 11 are inserted into the slot 15. The installation groove 10 can be used to position and install the fuse core 11, which facilitates the subsequent docking and installation of the slot 15 with the two ends of the fuse core 11, making it convenient to use.

[0027] In this embodiment, the conductive cap 9 is made of copper. A bolt 8 is installed inside the other end of the conductive cap 9 to limit rotation. The bolt 8 is screwed into the inside of the first cover plate 2 and the second cover plate 3. The inside of the first contact blade 4 and the second contact blade 5 is provided with grooves corresponding to the position of the slide rod 13. The conductive cap 9 can connect the first contact blade 4, the second contact blade 5 and the fuse core 11. The grooves can accommodate the slide rod 13.

[0028] When using this high-voltage DC fuse, first insert the fuse core 11 into the mounting slot 10 to position and install it. The first contact 4 and the first cover plate 2 are an integral structure. The first cover plate 2 is installed on the top of the ceramic tube 1 through the protruding ring 16, and the first contact 4 is horizontally engaged inside the protruding ring 16. Rotate the bolt 8 on the first cover plate 2. The bolt 8 moves inside the first cover plate 2 and drives the conductive cap 9 inside the first contact 4 to move downward. The conductive cap 9 is inserted into the top of the fuse core 11 through the slot 15, and the conductive cap 9 drives the slide rod 13 to move downward. The slide rod 13 is pressed against the limiting ring 12 by the inclined surface, causing the slide rod 13 to slide into the conductive cap 9 and compress the spring 14. The slot 15 and the fuse core 11 are then engaged. After the core 11 is fully inserted, the slide rod 13 moves to the bottom of the limiting ring 12 and slides in the opposite direction under the elastic force of the spring 14, blocking the inner side of the limiting ring 12. Through the limiting action of the slide rod 13 and the limiting ring 12, the first cover plate 2 and the first contact 4 can be fixed. Similarly, the second cover plate 3 and the second contact 5 are fixedly installed at the bottom end of the ceramic tube 1. It is not necessary to fix the first contact 4 and the second contact 5 separately. The first contact 4 and the second contact 5 can be limited and installed through the convex ring 16. The first contact 4 and the second contact 5 can limit the conductive cap 9, which makes it convenient to quickly align the two ends of the fuse core 11 with the slot 15 and insert them. The assembly operation of this high voltage DC fuse is simple, which can improve the production efficiency of the high voltage DC fuse and has high practicality.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-voltage DC fuse, comprising a ceramic tube (1), characterized in that, The top and bottom of the ceramic tube (1) are respectively equipped with a first cover plate (2) and a second cover plate (3) through an adjustment mechanism (6) and a convex ring (16). The first contact blade (4) and the second contact blade (5) are respectively fixedly installed inside the first cover plate (2) and the second cover plate (3). The adjustment mechanism (6) includes a conductive cap (9). The conductive cap (9) is slidably installed inside the first contact blade (4) and the second contact blade (5). A limiting mechanism is symmetrically arranged on both sides of one end of the conductive cap (9). The limiting mechanism includes a slide rod (13). A limiting ring (12) is symmetrically fixedly arranged on the inner wall of the top and bottom ends of the ceramic tube (1).

2. The high-voltage DC fuse according to claim 1, characterized in that: The first contact blade (4) and the second contact blade (5) are both "L" shaped. The outer ends of the first contact blade (4) and the second contact blade (5) are provided with mounting holes (7). The convex ring (16) is symmetrically fixed at the top and bottom of the ceramic tube body (1). The convex ring (16) is inserted into the inside of the first cover plate (2) and the second cover plate (3). One end of the first contact blade (4) and the second contact blade (5) is snapped into the inside of the convex ring (16).

3. A high-voltage DC fuse according to claim 1, characterized in that: The slide rod (13) is symmetrically and slidably installed inside both sides of one end of the conductive cap (9), and a spring (14) is fixedly installed between the inner end of the slide rod (13) and the inner wall of the conductive cap (9).

4. A high-voltage DC fuse according to claim 3, characterized in that: An inclined surface is provided at the corresponding position of the limiting ring (12) at the other end of the slide rod (13), and the slide rod (13) is snapped onto the inner side of the limiting ring (12).

5. A high-voltage DC fuse according to claim 1, characterized in that: An installation groove (10) is provided at the center of the interior of the ceramic tube (1), and a fuse core (11) is installed inside the installation groove (10).

6. A high-voltage DC fuse according to claim 5, characterized in that: The two ends of the fuse core (11) are suspended, and a slot (15) is provided inside one end of the conductive cap (9). Both ends of the fuse core (11) are inserted into the slot (15).

7. A high-voltage DC fuse according to claim 1, characterized in that: The conductive cap (9) is made of copper, and a bolt (8) is installed inside the other end of the conductive cap (9) to limit rotation.

8. A high-voltage DC fuse according to claim 7, characterized in that: The bolt (8) is screwed into the inside of the first cover plate (2) and the second cover plate (3), and the inside of the first contact blade (4) and the second contact blade (5) is provided with grooves at the positions corresponding to the slide rod (13).

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