CN215896292U

CN215896292U - Fuse for power protection

Info

Publication number: CN215896292U
Application number: CN202122011936.2U
Authority: CN
Inventors: 林诺; 李金万; 康虎
Original assignee: Chongqing Jianshu Power Equipment Manufacturing Co ltd
Current assignee: Chongqing Jianshu Power Equipment Manufacturing Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-02-22
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to a fuse for power protection, which comprises a base, an insulating shell and a fuse body, wherein an installation cavity is arranged in the base, four groups of sliding grooves are formed in the side wall of the installation cavity, sliding blocks are connected in the sliding grooves in a sliding mode, semicircular limiting blocks are fixed on the upper end face of each sliding block, the insulating shell is located between the two groups of semicircular limiting blocks, the other end of each sliding block is connected with a connecting rod in a rotating mode, one end of each connecting rod is connected with a pull rod in a rotating mode, a cavity is formed in the insulating shell, openings are formed in the two ends of the insulating shell, end covers are connected to the openings in a threaded mode, and connecting columns are arranged on the end covers. Due to the design of the sliding block, the semicircular limiting block and the pull rod, the sliding block can be used for driving the semicircular limiting block to move by pulling through the pull rod, so that the insulating shell is convenient to disassemble, and the overhauling efficiency is improved; due to the design of the end cover and the connecting column, after the fuse link is damaged, the fuse link can be detached and replaced by rotating the end cover, the normal use of the device is guaranteed, the repeated use is realized, and the use cost is reduced.

Description

Fuse for power protection

Technical Field

The utility model relates to the technical field of fuses, in particular to a fuse for power protection.

Background

The fuse is an electric appliance which fuses a fuse body by heat generated by the fuse body when the current exceeds a specified value and disconnects a circuit, the fuse body melts the fuse body by the heat generated by the fuse body after the current exceeds the specified value for a period of time, so that the circuit is disconnected. However, the existing fuse is inconvenient to disassemble and maintain, the maintenance efficiency is low, and a fuse link in the fuse is inconvenient to replace.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, an object of the present invention is to provide a fuse for power protection, so as to solve the technical problems mentioned in the background art.

In order to solve the above problems, the present invention adopts the following technical solutions.

A fuse for electric power protection comprises a base, an insulating shell and a fuse body, wherein a mounting cavity is arranged in the base, four groups of sliding grooves are symmetrically arranged on the left side wall and the right side wall of the mounting cavity, one ends of the sliding grooves are communicated with the mounting cavity, the notches of the sliding grooves extend to the upper end face of the base, sliding blocks are connected in the sliding grooves in a sliding mode, one ends of the sliding blocks are provided with reset springs, one ends of the reset springs are fixed to the other ends of the sliding grooves, semicircular limiting blocks are fixed to the upper end face of the sliding blocks, the insulating shell is located between the two groups of semicircular limiting blocks, the other ends of the sliding blocks are connected with connecting rods in a rotating mode, one ends of the connecting rods, far away from the sliding blocks, are connected with pull rods in a rotating mode, the pull rods are connected in the mounting cavity in a sliding mode, one ends of the pull rods penetrate through the base, a pull ring is fixed to one end of each pull ring, a cavity is arranged in the insulating shell, openings are formed in the two ends of the insulating shell and are communicated with the cavities, threaded connection has the end cover on the opening, is provided with the spliced pole on the end cover, and the one end of spliced pole is provided with first connect the via hole, and the other end electric connection of spliced pole has the connecting spring, and the one end electric connection of connecting spring has the installation piece, is provided with second connect the via hole on the installation piece, the connection can be dismantled respectively at two sets of in the both ends of fuse-link on the second connect the via hole, the up end four corners department of base is provided with third connect the via hole respectively.

Preferably, the upper end face of the base is connected with a dustproof cover in a sliding mode, and one side of the dustproof cover is attached to one side of the sliding block.

In any of the above aspects, preferably, the dust cover is provided with a handle.

In any of the above schemes, preferably, the dust cover is inserted with a limit pin, and the limit pin penetrates through the dust cover and is inserted into the base.

In any of the above aspects, preferably, an operation ring is fixed to the limit pin.

In any of the above schemes, preferably, the inner side of the semicircular limiting block is provided with an insulating rubber pad.

In any one of the above aspects, preferably, the inner side of the insulating rubber pad is provided with friction stripes.

In any one of the above schemes, preferably, the rear end face of the base is provided with an access hole, the access hole is communicated with the installation cavity, and an access cover is connected to the access hole through a bolt.

In any of the above schemes, preferably, the pull rod is fixed with a limiting ring, the installation cavity is internally provided with a U-shaped limiting block, and the limiting ring is matched with the U-shaped limiting block.

In any of the above schemes, preferably, the U-shaped limiting block is bolted to the mounting cavity.

Compared with the prior art, the utility model has the advantages that:

according to the utility model, due to the design of the sliding block, the semicircular limiting block and the pull rod, the sliding block can be used for driving the semicircular limiting block to move by pulling through the pull rod, so that the insulating shell is convenient to disassemble, and the overhauling efficiency is improved; due to the design of the end cover and the connecting column, after the fuse link is damaged, the fuse link can be detached and replaced by rotating the end cover, the normal use of the device is guaranteed, the repeated use is realized, and the use cost is reduced.

Drawings

Fig. 1 is a schematic view of an overall structure of a fuse for power protection according to the present invention;

FIG. 2 is a schematic cross-sectional view of a base;

fig. 3 is a schematic cross-sectional view of the insulating housing.

The reference numbers in the figures illustrate:

1. a base; 2. an insulating housing; 3. a fuse link; 4. a mounting cavity; 5. a chute; 6. a slider; 7. a return spring; 8. a semicircular limiting block; 9. a connecting rod; 10. a pull rod; 11. a pull ring; 12. a cavity; 13. an opening; 14. an end cap; 15. connecting columns; 16. a first connecting through hole; 17. a connecting spring; 18. mounting a sheet; 19. a second connecting through hole; 20. a third connecting through hole; 21. a dust cover; 22. buckling a handle; 23. a spacing pin; 24. an operating ring; 25. an insulating rubber pad; 26. an access hole; 27. an access cover; 28. a limiting ring; 29. u type stopper.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Example (b):

referring to fig. 1 to 3, a fuse for power protection includes a base 1, an insulating housing 2 and a fuse link 3, wherein a mounting cavity 4 is disposed in the base 1, four sets of sliding chutes 5 are symmetrically disposed on left and right side walls of the mounting cavity 4, one ends of the sliding chutes 5 are communicated with the mounting cavity 4, notches of the sliding chutes 5 extend to an upper end surface of the base 1, sliding blocks 6 are slidably connected in the sliding chutes 5, one end of each sliding block 6 is provided with a return spring 7, one end of each return spring 7 is fixed to the other end of the corresponding sliding chute 5, semicircular limiting blocks 8 are fixed to the upper end surface of the corresponding sliding block 6, the insulating housing 2 is located between the two sets of semicircular limiting blocks 8, the other end of each sliding block 6 is rotatably connected to a connecting rod 9, one end of each connecting rod 9, which is far away from the corresponding sliding block 6, is rotatably connected to a pull rod 10, the pull rod 10 is slidably connected in the mounting cavity 4, and one end of the pull rod 10 passes through the base 1, and the one end of pull rod 10 is fixed with pull ring 11, is provided with cavity 12 in the insulating casing 2, and the both ends of insulating casing 2 are provided with opening 13, and opening 13 and cavity 12 intercommunication, threaded connection has end cover 14 on opening 13, is provided with spliced pole 15 on the end cover 14, and the one end of spliced pole 15 is provided with first connect the via hole 16, and the other end electric connection of spliced pole 15 has connecting spring 17, and connecting spring 17's one end electric connection has installation piece 18, is provided with second connect the via hole 19 on the installation piece 18, the connection can be dismantled respectively at two sets of in the both ends of fuse-link 3 on the second connect the via hole 19, the up end four corners department of base 1 is provided with third connect the via hole 20 respectively.

In this embodiment, the upper end surface of the base 1 is slidably connected with a dust cover 21, and one side of the dust cover 21 is attached to one side of the slider 6; the dust cover 21 is provided with a buckle 22. The design of the dust cover 21 can reduce the dust entering the base 1.

In this embodiment, the dust cover 21 is inserted with a limit pin 23, and the limit pin 23 penetrates through the dust cover 21 and is inserted into the base 1; an operating ring 24 is fixed on the limit pin 23. The design of the limit pin 23 can prevent the dust cover 21 from sliding uncontrollably.

In this embodiment, an insulating rubber pad 25 is disposed inside the semicircular limiting block 8; the inner side of the insulating rubber pad 25 is provided with friction stripes. Through the above design, the insulating rubber pad 25 can increase the insulation between the semicircular limiting block 8 and the insulating housing 2.

In this embodiment, the rear end face of the base 1 is provided with an access opening 26, the access opening 26 is communicated with the installation cavity 4, and an access cover 27 is connected to the access opening 26 through bolts. The design of the access hole 26 can facilitate the access to the components in the base 1.

In this embodiment, a limiting ring 28 is fixed on the pull rod 10, a U-shaped limiting block 29 is arranged in the installation cavity 4, and the limiting ring 28 and the U-shaped limiting block 29 are arranged in a matching manner; the U-shaped limiting block 29 is connected with the installation cavity 4 through bolts. By the above design, the movable range of the drawbar 10 can be limited.

The working process of the utility model is as follows:

the operator can put into insulating casing 2 with fuse-link 3, then put insulating casing 2 between two sets of semicircle type stopper 8, then be connected to the device on the external circuit, after taking place fuse-link 3 and melt, can cut off external circuit's power, then pulling pull rod 10, drive connecting rod 9 through pull rod 10 and remove, thereby promote slider 6 and outwards slide through connecting rod 9, thereby make adjacent semicircle type stopper 8 keep away from, thereby dismantle insulating casing 2 from base 1, then rotate end cover 14, dismantle fuse-link 3, change new fuse-link 3, reset the device. Due to the design of the sliding block 6, the semicircular limiting block 8 and the pull rod 10, the semicircular limiting block 8 can be driven to move by pulling through the pull rod 10 through the sliding block 6, so that the insulating shell 2 is convenient to disassemble, and the overhauling efficiency is improved; the design of end cover 14 and spliced pole 15, after fuse-link 3 damaged, the accessible rotates end cover 14, dismantles and changes fuse-link 3, guarantees the normal use of device, realizes used repeatedly, reduces use cost.

The foregoing is only a preferred embodiment of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a fuse for power protection, includes base, insulating casing and fuse-link, its characterized in that: the insulation device is characterized in that an installation cavity is arranged in the base, four groups of sliding grooves are symmetrically arranged on the left side wall and the right side wall of the installation cavity, one ends of the sliding grooves are communicated with the installation cavity, notches of the sliding grooves extend to the upper end face of the base, sliding blocks are connected in the sliding grooves in a sliding mode, one ends of the sliding blocks are provided with return springs, one ends of the return springs are fixed to the other ends of the sliding grooves, semicircular limiting blocks are fixed to the upper end face of the sliding block, the insulation shell is located between the two groups of semicircular limiting blocks, the other ends of the sliding blocks are connected with connecting rods in a rotating mode, one ends of the connecting rods, far away from the sliding blocks, are connected with pull rods in a rotating mode, the pull rods are connected in the installation cavity in a sliding mode, one ends of the pull rods penetrate through the base, a pull ring is fixed to one end of each pull rod, a cavity is arranged in the insulation shell, openings are arranged at two ends of the insulation shell and communicated with the cavity, end covers are in threaded connection with end covers, and connection with connecting columns are arranged on the end covers, one end of the connecting column is provided with a first connecting through hole, the other end of the connecting column is electrically connected with a connecting spring, one end of the connecting spring is electrically connected with an installation sheet, a second connecting through hole is formed in the installation sheet, the two ends of the fuse link are detachably connected with two sets of the second connecting through hole, and a third connecting through hole is formed in the four corners of the upper end face of the base.

2. A fuse for power protection as claimed in claim 1, wherein: the upper end face of the base is connected with a dustproof cover in a sliding mode, and one side of the dustproof cover is attached to one side of the sliding block.

3. A fuse for power protection as claimed in claim 2, wherein: the dustproof cover is provided with a buckle.

4. A fuse for power protection as claimed in claim 2, wherein: the dustproof cover is inserted with a limiting pin, and the limiting pin penetrates through the dustproof cover to be inserted into the base.

5. A fuse for power protection as claimed in claim 4, wherein: an operating ring is fixed on the limit pin.

6. A fuse for power protection as claimed in claim 1, wherein: and an insulating rubber pad is arranged on the inner side of the semicircular limiting block.

7. A fuse for power protection as claimed in claim 6, wherein: and friction stripes are arranged on the inner side of the insulating rubber gasket.

8. A fuse for power protection as claimed in claim 1, wherein: the rear end face of the base is provided with an access hole, the access hole is communicated with the installation cavity, and an access cover is connected to the access hole through bolts.

9. A fuse for power protection as claimed in claim 1, wherein: a limiting ring is fixed on the pull rod, a U-shaped limiting block is arranged in the installation cavity, and the limiting ring and the U-shaped limiting block are arranged in a matched mode.

10. A fuse for power protection as claimed in claim 9, wherein: the U-shaped limiting block is connected with the mounting cavity through bolts.