CN110047719B

CN110047719B - Improved fuse

Info

Publication number: CN110047719B
Application number: CN201910421808.XA
Authority: CN
Inventors: 曹文保
Original assignee: Shandong Shengzhuo Information Technology Co ltd
Current assignee: Shandong shengzhuo Information Technology Co.,Ltd.
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2021-04-23
Anticipated expiration: 2039-05-21
Also published as: CN110047719A

Abstract

The invention discloses an improved fuse which comprises a shell with an upward opening and a sealing cover in threaded connection with the upper end of the shell, wherein a second wiring seat is fixedly installed on the upper end face of the sealing cover, a conducting ring and an electromagnet for fixing an installation seat are fixedly connected to the lower end face of the sealing cover, the conducting ring is sleeved on the outer side of the electromagnet, a first wiring seat is fixedly installed on the side wall of the shell, a conducting strip is fixedly connected to the inner wall of the shell, an installation seat is installed inside the shell, and a groove is formed in the middle of the upper end face of the installation seat. The invention can cut off the circuit by fusing the fuse wire when the current in the circuit is overlarge, and can make the next fuse wire reconnect and conduct the circuit by arranging the mounting seat and pre-mounting a plurality of fuse wires on the mounting seat through the rotation of the mounting seat after the last fuse wire is fused, thereby avoiding replacing the fuse wire immediately, reducing the frequency of replacing the fuse wire and being convenient to use.

Description

Improved fuse

Technical Field

The invention relates to the technical field of fuses, in particular to an improved fuse.

Background

In an electric power system, a fuse is usually required to be arranged in a circuit to prevent the circuit from being damaged due to excessive current, the current fuse mainly comprises a fuse type fuse, once the fuse type fuse is blown, the fuse needs to be integrally replaced or replaced with a new fuse, the operation is complicated, the current in the circuit is usually occasionally and instantaneously excessive to blow out and break the fuse, the circuit is generally recovered to be stable after the fuse is blown out and broken, the new fuse needs to be replaced again, and the fuse is very inconvenient for common residents.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an improved fuse.

In order to achieve the purpose, the invention adopts the following technical scheme:

the improved fuse comprises a shell with an upward opening and a sealing cover in threaded connection with the upper end of the shell, wherein a second wire holder is fixedly mounted on the upper end face of the sealing cover, a conducting ring and an electromagnet used for a fixed mounting seat are fixedly connected to the lower end face of the sealing cover, the conducting ring is sleeved on the outer side of the electromagnet, a first wire holder is fixedly mounted on the side wall of the shell, a conducting strip is fixedly connected to the inner wall of the shell, a mounting seat is mounted inside the shell, a groove is formed in the middle of the upper end face of the mounting seat, a plurality of placing grooves are formed in the upper end face of the mounting seat at equal intervals along the circumferential direction of the upper end face of the mounting seat and communicated with the groove, conductive elastic pieces are fixedly connected to the two ends of the inner wall of each placing groove, a fuse wire is arranged between every two conductive elastic pieces and respectively abutted against the conducting ring and the, The fuse wire, the electromagnet and the second wire holder form a series circuit, and a driving mechanism for controlling the rotation of the mounting seat is arranged at the lower end of the mounting seat.

Preferably, actuating mechanism includes fixed connection and locates and the piston barrel that the opening faces down at mount pad lower extreme center, sliding connection has the sliding plug in the piston barrel, the intussuseption of piston barrel is filled with thermal energy liquid, the lower extreme fixedly connected with thread bush of piston barrel, thread bush internal thread is connected with the threaded rod, the upper end of threaded rod is rotated and is connected on the sliding plug, the fixed one-way bearing that has cup jointed of lower extreme of threaded rod, one-way bearing's outer lane fixedly connected with coil spring, the other end fixed connection of coil spring is on the interior diapire of casing, the lower extreme of mount pad is followed its circumference equidistant and is run through and is equipped with a plurality of heat-conducting wires, and a plurality of heat-conducting wires and a plurality of standing groove position one-to-ones, the one end and the fuse wire contact of heat-conducting wire, the other.

Preferably, a plurality of clamping grooves are formed in the lower end face of the electromagnet core at equal intervals along the circumferential direction of the electromagnet core, the clamping grooves correspond to the placing grooves in position one to one, a plurality of clamping blocks corresponding to the clamping grooves in position are arranged on the inner bottom wall of the groove at equal intervals along the circumferential direction of the inner bottom wall of the groove, and the clamping blocks are made of iron.

Preferably, the fixture block is adhered to the mounting seat.

Preferably, the shell and the sealing cover are uniformly provided with air holes.

The invention has the beneficial effects that:

through setting up electro-magnet, fixture block, draw-in groove, connect this fuse in the circuit through first connection terminal, second connection terminal, the electro-magnet produced magnetism in inserting the circuit this moment, and then holds the fixture block for in the fixture block card goes into the draw-in groove, and then with the spacing fixed of mount pad.

By arranging the driving mechanism, when the current in the circuit is overlarge, the fuse wire connected in the circuit generates heat, the heat generated by the heating of the fuse wire is transmitted to the thermal expansion liquid through the heat conducting wire, the thermal expansion liquid expands due to the heated volume and then pushes the sliding plug to move downwards, the sliding plug moves downwards to drive the threaded rod to move downwards, the threaded rod rotates due to the threaded connection of the threaded rod and the threaded sleeve, the coil spring is driven to turn upwards by the one-way bearing, when the fuse wire generates heat until the fuse wire is fused, the electromagnet is powered off and loses magnetism, and then the clamping block is not sucked to fix the mounting seat, the coil spring can carry out releasing torsion, and then the threaded rod is driven to rotate by the one-way bearing, because the thermal expansion liquid is in a heated expansion state, and the threaded sleeve limits the threaded rod, the mounting seat can be driven to rotate, and the next fuse wire is enabled to replace the position of, and the circuit is switched on again, the electromagnet is electrified again, and the mounting seat is further fixed.

Drawings

FIG. 1 is a schematic structural diagram of an improved fuse in accordance with the present invention;

fig. 2 is a schematic view of the internal structure of a housing of an improved fuse according to the present invention;

FIG. 3 is an enlarged view of FIG. 1 at A;

FIG. 4 is a schematic view showing a connection structure of a coil spring, a one-way bearing and a threaded rod of an improved fuse according to the present invention;

fig. 5 is a schematic structural diagram of a card slot of an improved fuse according to the present invention;

fig. 6 is a schematic structural diagram of a latch of an improved fuse according to the present invention.

In the figure: the device comprises a shell 1, a sealing cover 2, a first wire holder 3, a conducting strip 4, a conducting ring 5, an electromagnet 6, a second wire holder 7, a fuse wire 8, a placing groove 9, a conducting elastic sheet 10, a mounting seat 11, a conducting wire 12, a piston cylinder 13, a sliding plug 14, a threaded rod 15, a threaded sleeve 16, a one-way bearing 17, a coil spring 18, a clamping groove 19, a clamping block 20 and a thermal expansion liquid 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-6, an improved fuse includes a housing 1 with an upward opening and a sealing cover 2 screwed on the upper end of the housing 1, the housing 1 and the sealing cover 2 are uniformly provided with air holes having a certain air-permeable and heat-dissipating effect, the upper end surface of the sealing cover 2 is fixedly provided with a second wire holder 7, the lower end surface of the sealing cover 2 is fixedly connected with a conductive ring 5 and an electromagnet 6 for fixing a mounting seat 11, the conductive ring 5 is sleeved on the outer side of the electromagnet 6, two ends of an electrified coil of the electromagnet 6 are respectively electrically connected with the second wire holder 7 and the conductive ring 5, the side wall of the housing 1 is fixedly provided with a first wire holder 3, the inner wall of the housing 1 is fixedly connected with a conductive sheet 4, the conductive sheet 4 is electrically connected with the first wire holder 3, the housing 1 is internally provided with a mounting seat 11, the middle part of the upper end surface of the mounting seat 11 is provided with a groove, the upper end surface of, and standing groove 9 and recess intercommunication, the equal fixedly connected with electrically conductive shell fragment 10 in both ends of standing groove 9 inner wall, be equipped with fuse 8 between two electrically conductive shell fragments 10, two electrically conductive shell fragments 10 respectively with conducting ring 5, conducting strip 4 counterbalance contact, first connection terminal 3, fuse 8, electro-magnet 6 and second connection terminal 7 constitute series circuit, the lower extreme of mount pad 11 is equipped with and is used for controlling its pivoted actuating mechanism.

In the invention, the driving mechanism comprises a piston cylinder 13 which is fixedly connected at the center of the lower end of the mounting seat 11 and has a downward opening, a sliding plug 14 is connected in the piston cylinder 13 in a sliding way, thermal expansion liquid 21 is filled in the piston cylinder 13, a thread sleeve 16 is fixedly connected at the lower end of the piston cylinder 13, a thread rod 15 is connected in the thread sleeve 16 in a threaded way, the upper end of the thread rod 15 is rotatably connected on the sliding plug 14, a one-way bearing 17 is fixedly sleeved at the lower end of the thread rod 15, a coil spring 18 is fixedly connected at the outer ring of the one-way bearing 17, the other end of the coil spring 18 is fixedly connected on the inner bottom wall of the shell 1, so that the thread rod 15 can be driven to twist and apply force when extending and rotating, the coil spring 18 can drive the thread rod 15 to synchronously rotate, namely the mounting seat 11 can be driven to rotate, a plurality of heat-conducting wires, one end of the heat conducting wire 12 is in contact with the fuse wire 8, the other end of the heat conducting wire 12 penetrates through the side wall of the piston cylinder 13 and is in contact with the thermal expansion liquid 21, and after the fuse wire 8 which is connected into the circuit is fused, the driving mechanism drives the mounting seat 11 to rotate, so that the next new fuse wire 8 replaces the position of the previous fuse wire 8 and conducts the circuit again.

Be equipped with a plurality of draw-in grooves 19 along its circumference equidistant on the lower terminal surface of 6 iron cores of electro-magnet, and a plurality of draw-in grooves 19 and a plurality of standing groove 9 position one-to-one, be equipped with a plurality of fixture blocks 20 that correspond with draw-in groove 19 position along its circumference equidistant on the interior diapire of recess, the material of fixture block 20 is iron, fixture block 20 bonds on mount pad 11, through setting up electro-magnet 6, fixture block 20, draw-in groove 19, through first connection terminal 3, second connection terminal 7 connects this fuse in the circuit, 6 access circuit of electro-magnet produced magnetism this moment, and then hold fixture block 20, make fixture block 20 card go into in the draw-in groove 19, and then with the spacing fixed of mount pad 11.

When the fuse is used, the fuse is connected in a circuit through the first wire holder 3 and the second wire holder 7, the electromagnet 6 is connected into the circuit to generate magnetism, and then the clamping block 20 is sucked, so that the clamping block 20 is clamped in the clamping groove 19, and the mounting seat 11 is limited and fixed, when the current in the circuit is overlarge, the fuse wire 8 connected in the circuit generates heat, the heat generated by the heating of the fuse wire 8 is transmitted to the thermal expansion liquid 21 through the heat conduction wire 12, the heated volume of the thermal expansion liquid 21 expands, and then the sliding plug 14 is pushed to move downwards, the sliding plug 14 moves downwards to drive the threaded rod 15 to move downwards, as the threaded rod 15 is in threaded connection with the threaded sleeve 16, the threaded rod 15 rotates, and then the one-way bearing 17 drives the coil spring 18 to twist upwards, and when the fuse wire 8 generates heat until the fuse is lost, the electromagnet 6 cuts off the electricity and magnetism, and then no longer sucks the clamping block 20 to fix the, the coil spring 18 pulls the mounting seat 11 to move downwards, so that the clamping block 20 is moved out of the clamping groove 19, the coil spring 18 simultaneously twists and releases power, and then the threaded rod 15 is driven to rotate through the one-way bearing 17, because the thermal expansion liquid 21 is in a thermal expansion state, and the threaded sleeve 16 limits the threaded rod 15, and then the mounting seat 11 can be driven to rotate, so that the next fuse wire 8 is replaced with the last fused fuse wire 8, the circuit is switched on again, the electromagnet 6 is powered on again, and then the mounting seat 11 is fixed, when the thermal expansion liquid 21 is cooled, the sliding plug 14 moves upwards to reset, when the threaded rod 15 is driven to retract and rotate reversely, due to the arrangement of the one-way bearing 17, the coil spring 18 cannot be driven to twist.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The improved fuse is characterized by comprising a shell (1) with an upward opening and a sealing cover (2) in threaded connection with the upper end of the shell, wherein a second wire holder (7) is fixedly installed on the upper end face of the sealing cover (2), a conducting ring (5) and an electromagnet (6) used for fixing an installation seat (11) are fixedly connected onto the lower end face of the sealing cover (2), the conducting ring (5) is sleeved outside the electromagnet (6), a first wire holder (3) is fixedly installed on the side wall of the shell (1), a conducting plate (4) is fixedly connected onto the inner wall of the shell (1), the installation seat (11) is installed inside the shell (1), a groove is formed in the middle of the upper end face of the installation seat (11), a plurality of placing grooves (9) are formed in the upper end face of the installation seat (11) at equal intervals along the circumferential direction of the upper end face of the installation seat (11), and the placing grooves (9) are communicated, the two ends of the inner wall of the placing groove (9) are fixedly connected with conductive elastic sheets (10), a fuse wire (8) is arranged between the two conductive elastic sheets (10), the two conductive elastic sheets (10) are respectively abutted against the conductive ring (5) and the conductive sheet (4), the first wiring seat (3), the fuse wire (8), the electromagnet (6) and the second wiring seat (7) form a series circuit, and the lower end of the mounting seat (11) is provided with a driving mechanism for controlling the rotation of the mounting seat; actuating mechanism includes fixed connection and locates and open piston cylinder (13) down at mount pad (11) lower extreme center, sliding connection has sliding plug (14) in piston cylinder (13), piston cylinder (13) intussuseption is filled with thermal energy liquid (21), the lower extreme fixedly connected with thread bush (16) of piston cylinder (13), thread bush (16) female connection has threaded rod (15), the upper end of threaded rod (15) is rotated and is connected on sliding plug (14), the lower extreme of threaded rod (15) is fixed to be cup jointed one-way bearing (17), the outer lane fixedly connected with coil spring (18) of one-way bearing (17), the other end fixed connection of coil spring (18) is on the interior diapire of casing (1), the lower extreme of mount pad (11) is equipped with a plurality of heat conduction silk (12) along its circumference equidistant run-through, and a plurality of heat conduction silk (12) and a plurality of standing groove (9) position one-to-one, one end of the heat conducting wire (12) is in contact with the fuse wire (8), and the other end of the heat conducting wire (12) penetrates through the side wall of the piston cylinder (13) and is in contact with the thermal expansion liquid (21);

the lower end face of the iron core of the electromagnet (6) is provided with a plurality of clamping grooves (19) at equal intervals along the circumferential direction, the clamping grooves (19) are in one-to-one correspondence with the positions of the placing grooves (9), a plurality of clamping blocks (20) corresponding to the positions of the clamping grooves (19) are arranged on the inner bottom wall of the groove at equal intervals along the circumferential direction, and the clamping blocks (20) are made of iron.

2. An improved fuse as recited in claim 1, characterised in that said latch (20) is glued to said mounting seat (11).

3. An improved fuse as per claim 1, characterised in that said case (1) and said cover (2) have ventilation holes.