Fuse with protective structure

Abstract

The utility model discloses a fuse with protection structure, including fuse body, the both sides symmetry of fuse body are provided with baffle no.

Description

Technical Field

[0001] This utility model relates to the field of fuse technology, specifically a fuse with a protective structure. Background Technology

[0002] A fuse is an electrical device that breaks the circuit by melting its fusible element when the current exceeds a specified value. Fuses are widely used in high and low voltage power distribution systems, control systems, and electrical equipment as short-circuit and overcurrent protectors, and are one of the most commonly used protective devices.

[0003] According to CN218471883U, a protective fuse is described. When the current in the circuit greatly exceeds the specified value of the fuse body and an explosion occurs, the first and second half-cylinders move to both sides due to the impact of the explosion. At this time, the locking block disengages from the locking groove cavity inside the first half-cylinder, and the telescopic rod and spring connecting the first and second half-cylinders extend and undergo elastic deformation respectively. After the impact of the explosion disappears, the telescopic rod and spring connecting the first and second half-cylinders reset. The connecting post fixed on the outer surface of the first and second half-cylinders and the protective cylinder fixed at the other end of the connecting post block the moving first and second half-cylinders and the sparks generated, thereby preventing accidents caused by sparks generated by the explosion. This device can not only protect the fuse body but also prevent accidents caused by sparks generated by the explosion.

[0004] The aforementioned telescopic rods and springs can prevent accidents caused by sparks from an explosion. However, when the first and second half-cylinders separate due to the energy of the explosion, the resistance of the telescopic rods and springs is relatively small, resulting in a large kinetic energy in the first and second half-cylinders, which still poses a certain safety hazard. Utility Model Content

[0005] The purpose of this invention is to provide a fuse with a protective structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fuse with a protective structure, comprising a fuse body, wherein a first protective plate and a second protective plate are symmetrically arranged on both sides of the fuse body, a plug-in block is symmetrically arranged on both sides of the end face of the first protective plate, a ramp groove is symmetrically arranged on the upper and lower sides of the plug-in block, a T-shaped mounting groove is symmetrically arranged on both sides of the end face of the second protective plate, two abutment blocks are symmetrically arranged inside the mounting groove, a ramp groove is arranged on the side of the two abutment blocks that are close to each other, the ramp groove is in contact with the ramp groove, and a connecting spring is fixedly connected between the abutment block and the inner wall of the mounting groove.

[0007] As a further preferred embodiment of this technical solution, an upper electrode post is fixedly connected to the top of the fuse body, and a lower electrode post is fixedly connected to the bottom of the fuse body.

[0008] As a further preferred embodiment of this technical solution, both the first and second protective plates are provided with multiple heat dissipation holes, and a waterproof and breathable membrane is provided at the heat dissipation holes.

[0009] As a further preferred embodiment of this technical solution, the protective plate has two symmetrically arranged insertion slots on one side near the insertion block, and the insertion slots are provided with magnetic pads inside.

[0010] As a further preferred embodiment of this technical solution, the second protective plate is symmetrically provided with plug-in plates on the side near the mounting groove. The plug-in plates are located inside the plug-in groove, and the plug-in plates and the magnetic pads are opposite magnets that attract each other.

[0011] As a further preferred embodiment of this technical solution, the outer surfaces of the first and second protective plates are provided with a protective shell, and the surface of the protective shell has a plurality of heat dissipation grooves evenly distributed circumferentially.

[0012] As a further preferred embodiment of this technical solution, the protective shell has multiple transverse reinforcing ribs uniformly arranged along the height direction inside, and multiple longitudinal reinforcing ribs uniformly distributed circumferentially inside, with the transverse and longitudinal reinforcing ribs being staggered to form a grid structure.

[0013] This utility model provides a fuse with a protective structure, which has the following beneficial effects: (1) When the fuse explodes, the internal energy pushes the first and second protective plates to separate. The plug block and the abutment block slide relative to each other through the first and second ramp grooves and squeeze the connecting spring, so that the abutment block slides inside the mounting groove. Through the elastic force of the connecting spring, the relative sliding of the plug block and the abutment block, and the friction between the first and second ramp grooves, the relative movement between the first and second protective plates is slowed down, thereby improving the safety during the explosion.

[0014] (2) This utility model provides multiple heat dissipation holes on the first and second protective plates, and in conjunction with the heat dissipation grooves on the protective shell, to promote the dissipation of heat generated by the fuse during operation, prevent the internal temperature from being too high and affecting the performance and life of the fuse. The protective shell is a closed structure, which completely encloses the fuse, ensuring the waterproof and dustproof effect of the fuse. The protective shell is provided with multiple transverse and longitudinal reinforcing ribs, thereby improving the overall strength and impact resistance of the shell. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the protective shell of this utility model; Figure 3 This is a schematic diagram of the waterproof and breathable membrane structure of this utility model; Figure 4 This is a schematic diagram of the second protective plate structure of this utility model; Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the structure of the first and second protective plates of this utility model.

[0016] In the diagram: 1. Fuse element; 2. Upper electrode post; 3. Lower electrode post; 4. Protective plate one; 5. Protective plate two; 6. Connecting block; 7. Sloping groove one; 8. Mounting groove; 9. Abutting block; 10. Sloping groove two; 11. Connecting spring; 12. Heat dissipation hole; 13. Connecting groove; 14. Magnetic gasket; 15. Connecting plate; 16. Waterproof and breathable membrane; 17. Protective shell; 18. Heat dissipation groove; 19. Horizontal reinforcing rib; 20. Longitudinal reinforcing rib. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] This utility model provides a technical solution: such as Figures 1 to 6 As shown, in this embodiment, a fuse with a protective structure includes a fuse body 1. A first protective plate 4 and a second protective plate 5 are symmetrically arranged on both sides of the fuse body 1. A plug-in block 6 is symmetrically arranged on both sides of the end face of the first protective plate 4. A ramp groove 7 is symmetrically arranged on the upper and lower sides of the plug-in block 6. A T-shaped mounting groove 8 is symmetrically arranged on both sides of the end face of the second protective plate 5. Two abutment blocks 9 are symmetrically arranged inside the mounting groove 8. A ramp groove 10 is arranged on the side of the two abutment blocks 9 that is close to each other. The ramp groove 10 and the ramp groove 7 are in contact. A connecting spring 11 is fixedly connected between the abutment block 9 and the inner wall of the mounting groove 8.

[0019] When the fuse explodes, the internal energy pushes the protective plate 4 and the protective plate 5 apart. The plug block 6 and the abutment block 9 slide relative to each other through the ramp groove 7 and the ramp groove 10, and squeeze the connecting spring 11, causing the abutment block 9 to slide inside the mounting groove 8. Through the elastic force of the connecting spring 11, the relative sliding of the plug block 6 and the abutment block 9, and the friction between the ramp groove 7 and the ramp groove 10, the relative movement between the protective plate 4 and the protective plate 5 is slowed down, thereby improving safety during the explosion.

[0020] The top of the fuse element 1 is fixedly connected to the upper electrode post 2, and the bottom of the fuse element 1 is fixedly connected to the lower electrode post 3.

[0021] Both the first protective plate 4 and the second protective plate 5 have multiple heat dissipation holes 12 inside, and a waterproof and breathable membrane 16 is installed at the heat dissipation holes 12.

[0022] Multiple heat dissipation holes 12 are provided on the first protective plate 4 and the second protective plate 5 to promote the dissipation of heat generated by the fuse during operation and prevent the internal temperature from being too high, which would affect the performance and life of the fuse element 1. A waterproof and breathable membrane 16 is provided at the heat dissipation holes 12 to ensure the waterproof and dustproof effect of the first protective plate 4 and the second protective plate 5.

[0023] Two insertion slots 13 are symmetrically arranged on the side of the guard plate 4 near the insertion block 6, and magnetic pads 14 are arranged inside the insertion slots 13.

[0024] A plug-in plate 15 is symmetrically arranged on the side of the second protective plate 5 near the mounting groove 8. The plug-in plate 15 is located inside the plug-in groove 13. The plug-in plate 15 and the magnetic pad 14 are opposite magnets and attract each other.

[0025] Insert the plug plate 15 into the plug slot 13. Since the plug plate 15 and the magnetic pad 14 are opposite magnets, they attract each other when they come into contact, thus ensuring the connection between the first protective plate 4 and the second protective plate 5.

[0026] The outer surfaces of the first protective plate 4 and the second protective plate 5 are provided with a protective shell 17, and the surface of the protective shell 17 has a plurality of heat dissipation grooves 18 evenly distributed in the circumferential direction.

[0027] The protective shell 17 has multiple transverse reinforcing ribs 19 evenly arranged along the height direction inside, and multiple longitudinal reinforcing ribs 20 evenly distributed around the circumference inside. The transverse reinforcing ribs 19 and longitudinal reinforcing ribs 20 are staggered and form a grid structure.

[0028] Multiple transverse reinforcing ribs 19 and longitudinal reinforcing ribs 20 are provided inside the protective shell 17, forming a grid structure, thereby improving the overall strength and impact resistance of the shell and preventing the protective shell 17 from breaking when subjected to a large external impact.

[0029] This utility model provides a fuse with a protective structure, the specific working principle of which is as follows: In use, place the first protective plate 4 and the second protective plate 5 on both sides of the fuse 1, and insert the plug plate 15 into the plug slot 13. Since the plug plate 15 and the magnetic pad 14 are opposite magnets, they attract each other when they come into contact, fixing the positions of the first protective plate 4 and the second protective plate 5. At the same time, the plug block 6 moves into the mounting groove 8 and presses the abutment blocks 9 to both sides. The connecting spring 11 deforms under force, causing the plug block 6 to move between the two abutment blocks 9. The ramp groove 1 7 and the ramp groove 2 10 come into contact with each other, and the protective shell 17 is installed on the first protective plate 4 and the second protective plate 5. Externally, sealant is used to ensure the sealing of the fuse connection. When the fuse explodes, the internal energy pushes the protective plate 4 and the protective plate 5 apart. The plug block 6 and the abutment block 9 slide relative to each other through the ramp groove 7 and the ramp groove 10, and squeeze the connecting spring 11, causing the abutment block 9 to slide inside the mounting groove 8. Through the elastic force of the connecting spring 11, the relative sliding of the plug block 6 and the abutment block 9, and the friction between the ramp groove 7 and the ramp groove 10, the relative movement between the protective plate 4 and the protective plate 5 is slowed down, preventing excessive separation during the explosion and impacting the surrounding environment.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fuse with a protective structure, comprising a fuse element (1), characterized in that: The fuse (1) is symmetrically provided with a first guard plate (4) and a second guard plate (5) on both sides. The first guard plate (4) is symmetrically provided with plug-in blocks (6) on both sides of its end face. The plug-in blocks (6) are symmetrically provided with ramp grooves (7) on both sides of its upper and lower sides. The second guard plate (5) is symmetrically provided with T-shaped mounting grooves (8) on both sides of its end face. The mounting groove (8) is symmetrically provided with two abutting blocks (9). The two abutting blocks (9) are provided with ramp grooves (10) on the side where they are close to each other. The ramp grooves (10) and ramp grooves (7) are in contact. A connecting spring (11) is fixedly connected between the abutting blocks (9) and the inner wall of the mounting groove (8).

2. A fuse with a protective structure according to claim 1, characterized in that: The top of the fuse (1) is fixedly connected to an upper pole post (2), and the bottom of the fuse (1) is fixedly connected to a lower pole post (3).

3. A fuse with a protective structure according to claim 1, characterized in that: Both the first protective plate (4) and the second protective plate (5) are provided with multiple heat dissipation holes (12), and a waterproof and breathable membrane (16) is provided at the heat dissipation holes (12).

4. A fuse with a protective structure according to claim 1, characterized in that: The guard plate (4) has two symmetrically arranged plug slots (13) on the side near the plug block (6), and the plug slots (13) are provided with magnetic pads (14).

5. A fuse with a protective structure according to claim 1, characterized in that: The second guard plate (5) is symmetrically provided with a plug plate (15) on the side near the mounting groove (8). The plug plate (15) is located inside the plug groove (13). The plug plate (15) and the magnetic pad (14) are opposite magnets and attract each other.

6. A fuse with a protective structure according to claim 1, characterized in that: The outer surfaces of the first protective plate (4) and the second protective plate (5) are provided with protective shells (17), and the surface of the protective shells (17) is evenly distributed with multiple heat dissipation grooves (18).

7. A fuse with a protective structure according to claim 6, characterized in that: The protective shell (17) has a plurality of transverse reinforcing ribs (19) evenly arranged along the height direction inside, and a plurality of longitudinal reinforcing ribs (20) evenly distributed in the circumferential direction inside. The transverse reinforcing ribs (19) and longitudinal reinforcing ribs (20) are staggered and form a grid structure.

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