CN111710575B

CN111710575B - Self-replacing fuse

Info

Publication number: CN111710575B
Application number: CN202010582875.2A
Authority: CN
Inventors: 郭德琼
Original assignee: Xianning Power Supply Co of State Grid Hubei Electric Power Co Ltd
Current assignee: Xianning Power Supply Co of State Grid Hubei Electric Power Co Ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2022-11-08
Anticipated expiration: 2040-06-23
Also published as: CN111710575A

Abstract

The invention discloses a self-replacing fuse, which comprises a shell and a fuse belt group, wherein a sealing cover is in threaded connection with an opening at the upper end of the shell, a partition plate is fixed on the inner wall of the shell, a group of power connection reeds are fixed on the inner wall of the shell and the side wall of the partition plate, external wires fixedly connected with the two groups of power connection reeds respectively penetrate through and are inserted at two ends of the shell, a release shaft and a winding shaft are rotatably connected to the side wall of the partition plate, a deflection groove is formed in the end part of the winding shaft, and a deflection shaft is rotatably connected to the inner wall of the deflection groove through a one-way bearing. Has the advantages that: through design fusing area group for a plurality of fusible links can arrange in order and assemble, and after the fusible link of outer circuit fault connection melts, subsequent fusible link can fill with releasing in time through the roll-up of fusing area group, thereby makes the outer circuit keep unblocked, does not need artificial frequent change fusible link, has reduced human operation and has avoided changing the trouble, and it is more convenient to use.

Description

Self-replacing fuse

Technical Field

The invention relates to the technical field of power equipment, in particular to a self-replacing fuse.

Background

The fuse is an electric appliance which fuses a melt by heat generated by the fuse when the current exceeds a specified value and disconnects a circuit; the fuse melts the melt by the heat generated by the fuse after the current exceeds a specified value for a period of time, so as to cut off the circuit; a current protector is made by applying the principle. The fuse is widely applied to high-low voltage distribution systems, control systems and electric equipment, is used as a short-circuit and overcurrent protector, and is one of the most commonly applied protective devices;

the fuse that uses at present arranges most commonly in insulation support with a thin fuse, and this kind of simple structure, drawback lie in if the fuse blows, when needing to be changed, will handle the power failure earlier, climbs to the place of installing an insurance again by the maintainer, changes the operation, and is more troublesome, but if not change in time, can influence power equipment's normal operating.

Disclosure of Invention

The invention aims to solve the problem that the frequent replacement of a fuse wire is troublesome in the prior art, and provides a self-replacing fuse.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a from changing fuse, includes shell and fusing area group, the upper end opening threaded connection of shell has sealed lid, the inner wall of shell is fixed with the baffle, the inner wall of shell and the lateral wall of baffle all are fixed with a set of electricity reed, the both ends of shell are run through and are inserted the external tapping that is equipped with two sets of electricity reeds difference fixed connection, the lateral wall of baffle rotates and is connected with release axle and roll-up axle, the deflection groove has been seted up to the tip of roll-up axle, deflection inslot wall is connected with the deflection axle through one-way bearing rotation, the deflection axle runs through the baffle and is connected with shell inner wall rotation, the circumference lateral wall of deflection axle is fixed with the commentaries on classics board, the commentaries on classics board is connected with reset spring jointly with the inner wall of shell, the inner wall of shell is fixed with electro-magnet and inductor.

In foretell from changing the fuse, fusing area group includes multiunit fusing component, fusing component includes that two insert the ring and a fuse, the fuse runs through two and inserts the ring, two insert the ring and set up about fuse central point symmetry, every two sets of adjacent fusing component is connected by the connecting band of two symmetries, per two symmetries the connecting band is connected by a stable area.

In the self-replacing fuse, the electromagnet is connected into an external circuit through a lead, and the inductor is connected into the external circuit in parallel with the electromagnet through the lead.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, the fuse strip group is designed, so that a plurality of fuses can be orderly arranged and assembled, and after the fuses connected with faults of an external circuit are fused, subsequent fuses can be timely filled through winding and releasing of the fuse strip group, so that the external circuit can be kept smooth, manual frequent replacement of the fuses is not needed, manual operation is reduced, replacement troubles are avoided, and the use is more convenient;

2. according to the invention, when an external circuit is normally powered on, the electromagnet generates magnetic force to attract the rotating plate, so that the rotating plate deflects and stretches the reset spring, through the connection design of the deflection shaft and the one-way bearing on the inner wall of the deflection groove, the rotating plate can not drive the winding shaft to rotate when deflected under the action of the magnetic force, so that the connection between the fuse and the power connection reed is stable when the external circuit is stable, and accidental power failure is avoided;

3. according to the invention, when the external circuit is normally powered on, the inductor stores certain electric energy, and the inductor releases the electric energy to supply power to the electromagnet after the external circuit is switched off, so that the electromagnet still acts on the rotating plate before the electric quantity of the inductor is completely released, and the rotating plate keeps a deflection state, therefore, the fuse wire cannot be directly filled when the power is off, but is filled after a certain time, the problem of electricity utilization can be solved within enough time for users, and the invalid waste of the fuse wire is avoided;

4. according to the invention, the fusing belt set is ingenious in design, low in processing and manufacturing cost, and can be replaced for a long time only by regularly replacing the fusing belt set in actual use, and the fusing belt set is simple in overall structural design, low in manufacturing cost and convenient to use.

Drawings

FIG. 1 is a schematic structural diagram of a self-replaceable fuse according to the present invention;

FIG. 2 is a cross-sectional view taken along the direction A in FIG. 1;

FIG. 3 is a cross-sectional view taken along the direction B in FIG. 1;

FIG. 4 is a schematic diagram of a fuse ribbon assembly of a self-replacing fuse in accordance with the present invention;

figure 5 is a top view of a fuse ribbon assembly of a self-replacing fuse in accordance with the present invention.

In the figure: the device comprises a shell 1, a sealing cover 2, a partition plate 3, a power connection reed 4, an external connection wire 5, a release shaft 6, a winding shaft 7, a deflection groove 8, a deflection shaft 9, a rotation plate 10, a return spring 11, an electromagnet 12, an inductor 13, a fuse wire 14, an insertion ring 15, a connecting belt 16 and a stabilizing belt 17.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-5, a self-replaceable fuse includes a housing 1 and a fuse strip set, an upper opening of the housing 1 is in threaded connection with a sealing cover 2, a partition plate 3 is fixed on an inner wall of the housing 1, a set of power-receiving reeds 4 is fixed on both an inner wall of the housing 1 and a side wall of the partition plate 3, external wires 5 respectively fixedly connected with the two sets of power-receiving reeds 4 are inserted through both ends of the housing 1, a release shaft 6 and a winding shaft 7 are rotatably connected to a side wall of the partition plate 3, a deflection groove 8 is formed in an end portion of the winding shaft 7, a deflection shaft 9 is rotatably connected to an inner wall of the deflection groove 8 through a one-way bearing, the deflection shaft 9 is rotatably connected to an inner wall of the housing 1 through the partition plate 3, a rotation plate 10 is fixed on a circumferential side wall of the deflection shaft 9, the rotation plate 10 is commonly connected with an inner wall of the housing 1, the rotation plate 10 overcomes an elastic force of a return spring 11 to deflect, the rotation shaft 9 can drive the deflection shaft 9 to rotate, but the rotation of the deflection shaft 9 cannot drive the rotation shaft 7 to rotate, and the rotation plate 10 is fixed on an electromagnet to rotate only once when the return spring 11 returns.

The fusing belt set comprises a plurality of groups of fusing components, each fusing component comprises two insertion rings 15 and a fuse wire 14, each fuse wire 14 penetrates through the two insertion rings 15, the two insertion rings 15 are symmetrically arranged about the center point of each fuse wire 14, each two groups of adjacent fusing components are connected by two symmetrical connecting belts 16, each two symmetrical connecting belts 16 are connected by a stabilizing belt 17, the fusing belt set is integrally in a belt shape, the plurality of fuse wires 14 are arranged in the fusing belt set, the fusing belt set is light and thin and can be wound, therefore, the fusing belt set is wound on the release shaft 6 when the fusing belt set is used, the other end of the fusing belt set is adhered to the furling shaft 7, and once the furling shaft 7 rotates, the fusing belt set is wound to the surface of the furling shaft 7 and is separated from the release shaft 6, the fusing wires 14 sequentially pass through the power connection reed 4, and automatic and orderly filling is achieved.

The electromagnet 12 is connected into an external circuit through a lead, the inductor 13 is connected into an external circuit through a lead and the electromagnet 12 in parallel, the electromagnet 12 always keeps the magnetic force action of the electromagnet on the rotating plate 10 when the external circuit normally works, the inductor 13 stores a certain amount of electric energy after being connected into the circuit, after the external circuit is disconnected, the external circuit does not supply power to the electromagnet, the inductor 13 releases the stored electric energy to supply power to the electromagnet, the electromagnet keeps magnetism within a period of time after the external circuit is disconnected, and the length of the period of time is determined by the electric quantity stored in the inductor 13, namely the attribute of the inductor 13.

According to the invention, before the fuse is connected to a circuit, a fuse belt group is wound on a release shaft 6, an initial end is adhered to a winding shaft 7, a first fuse wire 14 is abutted against an electric contact reed 4, so that the fuse wire 14 is stably contacted with the electric contact reed 4 under the action of elastic force generated after the electric contact reed 4 is deformed, the subsequent electric connection is stable, then a sealing cover 2 is sealed to ensure the stability of the interior of a shell 1, and then the fuse is connected to the circuit to start working;

when the normal working current of an external circuit is stable, the current of the electromagnet 12 passes through, so that the electromagnet 12 generates a corresponding magnetic field, the magnetic force adsorption effect is exerted on the rotating plate 10 to cause the rotating plate 10 to deflect, and further the deflection shaft 9 rotates, and the deflection shaft 9 is rotatably connected with the inner wall of the deflection tank 8 through the one-way bearing, so that when the rotating plate 10 deflects under the action of the magnetic force, the deflection shaft 9 cannot drive the winding shaft 7 to rotate, so that the stability of the fuse wire 14 is ensured, and meanwhile, the inductor 13 connected with the electromagnet 12 in parallel is charged by the external circuit, so that the inductor 13 stores certain electric quantity;

when the current in the circuit is increased due to the fault or overload of the external circuit, the fuse wire 14 generates heat when a large current passes through the fuse wire, so that the fuse wire 14 is fused in a short time to realize the protection of the current, after the fuse wire 14 is disconnected, the external short circuit is disconnected, the inductor 13 releases the electric energy stored in the inductor to supply power to the electromagnet 12, and therefore the electromagnet 12 keeps the magnetic adsorption effect on the rotating plate 10 after the external circuit is disconnected, and the rotating plate 10 can keep the deflection state;

because the electric energy stored in the inductor 13 is limited, the power supply time of the inductor 13 to the electromagnet 12 is limited, so that after a period of time, the electromagnet 12 does not generate a magnetic field any more, the rotating plate 10 is not influenced by magnetic force any more, the rotating plate 10 is reset under the elastic force of the reset spring 11, the deflecting shaft 9 rotates, and because the deflecting shaft 9 is rotatably connected with the inner wall of the deflecting groove 8 through the one-way bearing, the rotating deflecting shaft 9 drives the winding shaft 7 to rotate, so that the winding shaft 7 winds the fuse ribbon group through the rotation of the winding shaft, the fuse ribbon group on the releasing shaft 6 is released outwards, so that the position of the fuse wire 14 is moved and transferred, the fuse wire 14 after being fused is moved to the position of the winding shaft 7 to be wound and stored, and the unused fuse wire 14 is moved to the position of the reed for connecting with the electric cable 4 to conduct the circuit again, so that the external circuit is powered back, thereby avoiding the inconvenience brought by replacing the fuse wire 14 by people.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a from changing fuse, includes shell (1) and fusing area group, its characterized in that, the upper end opening threaded connection of shell (1) has sealed lid (2), the inner wall of shell (1) is fixed with baffle (3), the inner wall of shell (1) and the lateral wall of baffle (3) all are fixed with a set of electricity reed (4), the both ends of shell (1) are run through and are inserted and be equipped with external connection (5) with two sets of electricity reed (4) fixed connection respectively, the lateral wall of baffle (3) rotates and is connected with release axle (6) and roll-up axle (7), the tip of roll-up axle (7) has seted up deflection groove (8), deflection groove (8) inner wall is connected with deflection axle (9) through one-way bearing rotation, deflection axle (9) run through baffle (3) and shell (1) inner wall rotation connection, the circumference lateral wall of deflection axle (9) is fixed with rotor plate (10), rotor plate (10) and the inner wall of shell (1) are connected with reset spring (11) jointly, the inner wall of shell (1) is fixed with inductor (12) and fusing area group (13), fuse (15), two fuse group (15) include two fuse plug-in the electro-magnet plug-wire (14), the two inserting rings (15) are symmetrically arranged about the center point of the fuse wire (14), every two groups of adjacent fusing components are connected through two symmetrical connecting bands (16), and every two symmetrical connecting bands (16) are connected through one stabilizing band (17).

2. A self-changing fuse as claimed in claim 1, characterised in that the electromagnet (12) is wired into an external circuit and the inductor (13) is wired in parallel with the electromagnet (12) into the external circuit.