Knife-type contact fuse with protective device

Abstract

The utility model relates to the technical field of fuses, and discloses a knife-type contact fuse with a protective device, which comprises a fuse body, splicing assemblies are arranged on the outer sides of the upper end and the lower end of the fuse body, the splicing assemblies are used for assisting in disassembly and maintenance, and a disassembly assembly is arranged at the right end of the outer side of the fuse body. According to the knife-type contact fuse with the protection device, the splicing assembly is installed, the combined end cover can be combined with the protection shell to achieve the sealing effect, the insulating sleeve and the limiting sliding column can be spliced with the left positioning plate and the right positioning plate on the outer side, splicing is conducted along the positioning sliding groove of the combined end cover in the splicing process, and the sealing effect is achieved. When the insulation sleeve needs to be disassembled, the left positioning plate and the right positioning plate are directly separated through the threaded rod, so that the knife-shaped contact can be disassembled from the inner side of the combined end cover, and flexible disassembly and replacement are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fuses, in particular to a knife-type contact fuse with a protective device. Background Art

[0002] A fuse is a structure that cuts off power by melting at high temperature through the fusing structure inside the fuse when the current exceeds a threshold value. This structure can prevent high-voltage current from damaging the device. The existing knife-type structure can adopt a knife-type end structure, which is convenient for direct insertion into the inside of the circuit device, reducing the time spent. At the same time, a protective structure is arranged on the outside of the existing structure, and quartz sand is arranged inside the protective structure, which can achieve a good arc extinguishing effect.

[0003] In the prior art, when the existing fuse is used, after it is blown, the fuse structure in the middle will be broken and cannot be used normally, but the external protective structure, i.e. the connector, can still be used. However, the existing device cannot flexibly disassemble and separate the internal body and the connector from the protective structure. Utility Model Content

[0004] The utility model aims to provide a knife-type contact fuse with a protective device to solve the problem that the existing devices in the above-mentioned background technology cannot flexibly disassemble and separate the internal body and the connector from the protective structure.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a knife-type contact fuse with a protective device, comprising a fuse body, the outer sides of the upper end and the lower end of the fuse body are provided with splicing components, and the splicing components are used to assist in disassembly for maintenance, and the right end of the outer side of the fuse body is provided with a disassembly component, and the disassembly component is convenient for adding and pouring out the internal quartz sand;

[0006] The splicing assembly includes two groups of insulating sleeves, and the front and back sides of the insulating sleeves are provided with limited sliding posts, and the outer side of the left end of the limited sliding post is provided with a left positioning plate, the right side of the left positioning plate is provided with a right positioning plate, and the inner side of the right positioning plate is provided with two groups of threaded rods, and the bottom of the outer sides of the left positioning plate and the right positioning plate are provided with combined end covers, and the combined end covers are located at the top and bottom of the fuse body;

[0007] The disassembly assembly comprises a protective shell, and a separation cover is arranged on the right side of the protective shell, and four groups of splicing plates are arranged on the left side of the separation cover, and the splicing plates are located on the inner side of the right end of the protective shell.

[0008] Preferably, knife-type contacts are installed on the top and bottom of the fuse body, and the knife-type contacts are located on the inner side of the insulating sleeve.

[0009] Preferably, a combined plate is provided on the outer side of the insulating sleeve, and four groups of positioning columns are installed on the top or bottom of the combined plate, and the positioning columns are located on the inner side of the combined end cover.

[0010] Preferably, four groups of positioning bolts are embedded in the top of the combined end cover, and a positioning slot is provided in the middle of the combined end cover, and the positioning slot is located on the outer sides of the left positioning plate and the right positioning plate.

[0011] Preferably, the inner sides of the left positioning plate and the right positioning plate are provided with limiting grooves, and the limiting grooves are located on the outside of the insulating sleeve, the right end of the left positioning plate is provided with two sets of threaded grooves, and the threaded grooves are located on the outside of the threaded rod, and an adjustment knob is provided on the right side of the threaded rod.

[0012] Preferably, sealing grooves are opened on the top and bottom of the protective shell, and four groups of combination screw grooves are opened on the inner side of the sealing grooves, and the combination screw grooves are located on the outside of the positioning bolts, four groups of splicing grooves are opened on the right side of the protective shell, and four groups of installation screw grooves are opened on the right side of the protective shell.

[0013] Preferably, four groups of mounting bolts are embedded in the right side of the separation cover, and the mounting bolts are located on the inner side of the mounting screw grooves.

[0014] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0015] First, the utility model is equipped with a splicing component, and the combined end cover can be combined with the protective shell to achieve a sealing effect. The insulating sleeve and the limit slide column can be spliced ​​with the left positioning plate and the right positioning plate on the outside. During the splicing process, the splicing will be carried out along the positioning slide groove of the combined end cover to keep the insulating sleeve fixed in the fixed position of the combined end cover. When disassembly is required, the left positioning plate and the right positioning plate can be directly separated by the threaded rod, and the knife-type contact can be removed from the inside of the combined end cover, which is convenient for flexible disassembly and replacement.

[0016] Second, the utility model is equipped with a disassembly component, and the existing quartz sand needs to be poured out through the fuse end structure. Since the contact fuse is easy to spill when it is pulled out during disassembly, and it is inconvenient to inject during installation, a separation cover is provided on the right side of the protective shell, and the separation cover can be combined with the protective shell by using the mounting bolts of the separation cover. The quartz sand inside can be directly poured out by disassembling the side separation cover, avoiding the problems of spilling and inconvenient injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the combined end cover structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the fuse body of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the left positioning plate of the utility model;

[0021] Figure 5 This is a schematic diagram of the protective shell structure of the utility model.

[0022] Wherein: 1. Fuse body; 101. Knife-type contact; 102. Insulating sleeve; 103. Limiting slide column; 104. Combination plate; 105. Positioning column; 2. Combination end cover; 201. Positioning bolt; 202. Positioning slide groove; 3. Left positioning plate; 301. Limiting slide groove; 302. Threaded groove; 303. Right positioning plate; 304. Adjusting knob; 305. Threaded rod; 4. Protective shell; 401. Sealing groove; 402. Combination screw groove; 403. Splicing groove; 404. Installation screw groove; 5. Separation cover; 501. Splicing plate; 502. Installation bolt. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5 A knife-type contact fuse with a protective device comprises a fuse body 1, a splicing assembly is arranged on the outer side of the upper end and the lower end of the fuse body 1, and the splicing assembly is used to assist in disassembly for maintenance, and a disassembly assembly is arranged on the right end of the outer side of the fuse body 1, and the disassembly assembly is convenient for adding and pouring out the internal quartz sand;

[0025] The splicing assembly includes two groups of insulating sleeves 102, and the front and back sides of the insulating sleeves 102 are provided with limited sliding posts 103, and the outer side of the left end of the limited sliding post 103 is provided with a left positioning plate 3, and the right side of the left positioning plate 3 is provided with a right positioning plate 303, and the inner side of the right positioning plate 303 is provided with two groups of threaded rods 305, and the bottom of the outer sides of the left positioning plate 3 and the right positioning plate 303 is provided with a combined end cover 2, and the combined end cover 2 is located at the top and bottom of the fuse body 1;

[0026] The disassembly assembly includes a protective shell 4 , and a separation cover 5 is arranged on the right side of the protective shell 4 , and four groups of splicing plates 501 are arranged on the left side of the separation cover 5 , and the splicing plates 501 are located on the inner side of the right end of the protective shell 4 .

[0027] Through the above technical scheme, the combined end cover 2 can be combined with the protective shell 4 to achieve a sealing effect, and the insulating sleeve 102 and the limiting slide column 103 can be spliced ​​with the left positioning plate 3 and the right positioning plate 303 on the outside. During the splicing process, the positioning slide groove 202 of the combined end cover 2 will be spliced ​​to keep the insulating sleeve 102 fixed in the fixed position of the combined end cover 2. When disassembly is required, the left positioning plate 3 and the right positioning plate 303 can be directly separated by the threaded rod 305, and the knife-type contact 101 can be removed from the inside of the combined end cover 2, which is convenient for flexible disassembly and replacement.

[0028] Through the above technical solution, by arranging a separation cover 5 on the right side of the protective shell 4, the separation cover 5 can be combined with the protective shell 4 using the mounting bolts 502 of the separation cover 5, and the quartz sand inside can be directly poured out by disassembling the side separation cover 5, thereby avoiding spillage and inconvenience in injection.

[0029] Specifically, blade contacts 101 are installed on the top and bottom of the fuse body 1 , and the blade contacts 101 are located inside the insulating sleeve 102 .

[0030] Through the above technical solution, the blade contact 101 can be directly inserted into the inner side of the connecting device laterally.

[0031] Specifically, a combined plate 104 is disposed on the outer side of the insulating sleeve 102 , and four groups of positioning columns 105 are installed on the top or bottom of the combined plate 104 . The positioning columns 105 are located on the inner side of the combined end cover 2 .

[0032] Through the above technical solution, the combination plate 104 is used to assist the combination of the blade contact 101 and the combination end cover 2, and the positioning column 105 is used to increase the stability of the combination.

[0033] Specifically, four groups of positioning bolts 201 are embedded in the top of the combined end cover 2 , and a positioning slot 202 is opened in the middle of the combined end cover 2 . The positioning slot 202 is located on the outer sides of the left positioning plate 3 and the right positioning plate 303 .

[0034] Through the above technical solution, the positioning bolt 201 can connect and fix the combined end cover 2 and the protective shell 4, and the positioning groove 202 is used to limit the inner positioning plate structure.

[0035] Specifically, a limiting groove 301 is opened on the inner side of the left positioning plate 3 and the right positioning plate 303, and the limiting groove 301 is located on the outside of the insulating sleeve 102. Two groups of thread grooves 302 are opened on the right end of the left positioning plate 3, and the thread grooves 302 are located on the outside of the threaded rod 305. An adjustment knob 304 is set on the right side of the threaded rod 305.

[0036] Through the above technical solution, the limiting groove 301 is used to limit and increase stability while having a good limiting effect. The threaded rod 305 and the threaded groove 302 are combined to keep the two sets of positioning plates stable and limit the inner insulating sleeve 102.

[0037] Specifically, sealing grooves 401 are opened on the top and bottom of the protective shell 4, and four groups of combined screw grooves 402 are opened on the inner side of the sealing groove 401, and the combined screw grooves 402 are located on the outer side of the positioning bolt 201, four groups of splicing grooves 403 are opened on the right side of the protective shell 4, and four groups of installation screw grooves 404 are opened on the right side of the protective shell 4.

[0038] Through the above technical solution, the sealing groove 401 can be combined to increase the sealing performance of the combined end cover 2, the combined screw groove 402 is used to provide an installation position for the positioning bolt 201, and the splicing groove 403 can provide an installation position for the splicing plate 501, thereby effectively increasing stability.

[0039] Specifically, four groups of mounting bolts 502 are embedded in the right side of the separation cover 5 , and the mounting bolts 502 are located inside the mounting screw grooves 404 .

[0040] Through the above technical solution, the mounting bolts 502 are used to fix the separation cover 5 and the protective shell 4 .

[0041] When in use, first place the fuse body 1 on the inner side of the protective shell 4, then insert the knife-type contact 101 into the middle of the combined end cover 2, keep the combined plate 104 in contact with the inner side of the combined end cover 2, and then splice the left positioning plate 3 and the right positioning plate 303. After splicing, the threaded rod 305 can be driven by adjusting the knob 304 to combine the two groups of structures. After the combination, the knife-type contact 101 at one end can be restricted, and then the other end can be fixed in the same way. The quartz sand to be added is poured into the interior through the opening on the side, and then the splicing plate 501 of the separation cover 5 is inserted into the inner side of the splicing groove 403, and finally the combination is fixed by installing the bolt 502.

[0042] Although the 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 thereof, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A knife-type contact fuse with a protective device, comprising a fuse body (1), characterized in that: The outer sides of the upper and lower ends of the fuse body (1) are provided with splicing components, and the splicing components are used to assist in disassembly for maintenance; the right end of the outer side of the fuse body (1) is provided with a disassembly component, and the disassembly component is convenient for adding and pouring out the internal quartz sand; The splicing assembly comprises two groups of insulating sleeves (102), and the front and back sides of the insulating sleeves (102) are provided with limit sliding posts (103), and the left end of the limit sliding post (103) is provided with a left positioning plate (3) on the outside, and the right side of the left positioning plate (3) is provided with a right positioning plate (303), and the inside of the right positioning plate (303) is provided with two groups of threaded rods (305), and the bottom of the outer sides of the left positioning plate (3) and the right positioning plate (303) are provided with a combined end cover (2), and the combined end cover (2) is located at the top and bottom of the fuse body (1); The disassembly assembly comprises a protective shell (4), and a separation cover (5) is arranged on the right side of the protective shell (4), and four groups of splicing plates (501) are arranged on the left side of the separation cover (5), and the splicing plates (501) are located on the inner side of the right end of the protective shell (4).

2. A knife-type contact fuse with a protective device according to claim 1, characterized in that: Blade-shaped contacts (101) are installed on the top and bottom of the fuse body (1), and the blade-shaped contacts (101) are located inside the insulating sleeve (102).

3. The knife-type contact fuse with a protective device according to claim 1, characterized in that: A combined plate (104) is arranged on the outside of the insulating sleeve (102), and four groups of positioning columns (105) are installed on the top or bottom of the combined plate (104), and the positioning columns (105) are located on the inner side of the combined end cover (2).

4. The knife-type contact fuse with a protective device according to claim 1, characterized in that: Four groups of positioning bolts (201) are embedded in the top of the combined end cover (2), and a positioning slot (202) is provided in the middle of the combined end cover (2), wherein the positioning slot (202) is located outside the left positioning plate (3) and the right positioning plate (303).

5. The knife-type contact fuse with a protective device according to claim 1, characterized in that: The inner sides of the left positioning plate (3) and the right positioning plate (303) are provided with limiting sliding grooves (301), and the limiting sliding grooves (301) are located on the outer side of the insulating sleeve (102); the right end of the left positioning plate (3) is provided with two groups of thread grooves (302), and the thread grooves (302) are located on the outer side of the threaded rod (305); and an adjusting knob (304) is provided on the right side of the threaded rod (305).

6. The knife-type contact fuse with a protective device according to claim 1, characterized in that: The top and bottom of the protective shell (4) are provided with sealing grooves (401), and the inner side of the sealing groove (401) is provided with four groups of combined screw grooves (402), and the combined screw grooves (402) are located on the outer side of the positioning bolt (201). The right side of the protective shell (4) is provided with four groups of splicing grooves (403), and the right side of the protective shell (4) is provided with four groups of installation screw grooves (404).

7. The knife-type contact fuse with a protective device according to claim 1, characterized in that: Four groups of mounting bolts (502) are embedded in the right side of the separation cover (5), and the mounting bolts (502) are located inside the mounting screw grooves (404).

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