CN111816525A

CN111816525A - Intelligent self-recovery fuse

Info

Publication number: CN111816525A
Application number: CN202010714898.4A
Authority: CN
Inventors: 于亚美; 何偏偏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2020-10-23

Abstract

The invention discloses an intelligent self-recovery fuse, which comprises a shell, wherein a front electric connecting piece and a rear electric connecting piece are respectively fixed on the inner walls of two sides of the shell, a front electric connecting plate and a rear electric connecting plate are fixed on the inner top of the shell, the rear electric connecting plate is abutted against the rear electric connecting piece, an electric connecting spring is fixed at one end, close to the front electric connecting piece, of the front electric connecting plate, the electric connecting spring is abutted against the front electric connecting piece, and the inner bottom of the shell is connected with a conduction plate through a reset spring. Has the advantages that: through setting up main capacitor and secondary capacitor for the circuit disconnection back, weak electromagnet still keeps self magnetic force in a certain time, thereby makes the limiting plate after being close to receive its magnetic force restraint and can't escape, makes to connect the electric spring just can recover after shrink a period, and then the circuit can automatic recovery but can give the user certain time when making the circuit overload and handle the overload problem, makes the user use more convenient, need not manual recovery.

Description

Intelligent self-recovery fuse

Technical Field

The invention relates to the technical field of electric equipment, in particular to an intelligent self-recovery fuse.

Background

The fuse is an electric appliance which breaks a circuit when the current exceeds a specified value; 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;

thereby the effect of outage is mostly made the fuse-element fusing through the heat that produces itself to current fuse, but need to change the fuse-element, expend great to unable automatic recovery leads to using inconveniently, need certain time to go to produce the heat simultaneously, makes the circuit still receive the impact damage of certain time, and the general is not intelligent enough can't satisfy people's user demand.

Disclosure of Invention

The invention aims to solve the problem that a fuse in the prior art is inconvenient to use, and provides an intelligent self-recovery fuse.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an intelligence self recovery fuse, includes the shell, the both sides inner wall of shell is fixed with preceding electric contact piece and back electric contact piece respectively, connect electric plate and back electric contact plate before the interior top of shell is fixed with, back electric contact plate offsets with the back electric contact piece, the one end that preceding electric contact plate is close to preceding electric contact piece is fixed with connects the electric spring, connect the electric spring and offset with preceding electric contact piece, the interior bottom of shell is connected with through reset spring and switches on the board, switch on the board and connect electric plate and back and all offset with preceding electric contact plate, the interior top of shell is fixed with main capacitor and secondary capacitor, the interior bottom of shell is fixed with weak electromagnet and permanent magnet, the bottom of weak electromagnet is fixed with the limiting plate that offsets with the permanent magnet, the interior top of shell is fixed with strong electromagnet.

In the above intelligent self-recovery fuse, the strong electromagnet is located right above the conduction plate, and a push rod penetrating through the bottom of the housing is fixed at the bottom of the conduction plate.

In the above-mentioned intelligent self-recovery fuse, the weak electromagnet and the strong electromagnet are connected in parallel to the power line through the lead, and the main capacitor and the sub-capacitor are connected in parallel to the circuit through the lead, the strong electromagnet and the weak electromagnet.

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

1. according to the invention, the power connection spring is connected into the power utilization circuit, so that when the current is increased due to the fault in the circuit, the power connection spring can make a contraction response, thereby disconnecting the circuit, avoiding the circuit damage, prolonging the service life of the circuit, reducing the replacement frequency and saving the power consumption cost;

2. according to the invention, the main capacitor and the auxiliary capacitor are arranged, so that after the circuit is disconnected, the weak electromagnet still keeps the self magnetic force for a certain time, the limiting plate which is close to the circuit cannot escape due to the constraint of the magnetic force, the power connection spring can recover after being contracted for a period of time, and the circuit can automatically recover when the circuit is overloaded but can give a user a certain time to deal with the overload problem, so that the circuit is more convenient to use by the user, and the manual recovery is not needed;

3. according to the invention, when the power line is short-circuited, the auxiliary capacitor is broken down, so that the weak electromagnet and the strong electromagnet are both short-circuited by the line where the auxiliary capacitor is located, and when the main capacitor discharges outwards, the strong electromagnet and the weak electromagnet are not powered, so that the strong electromagnet does not keep the magnetic attraction effect on the conduction plate, the conduction plate is reset under the elastic force effect of the reset spring, the front connection plate and the rear connection plate are thoroughly electrically disconnected, the whole line is disconnected after short circuit and cannot automatically recover, and the fire caused by impact on the line is avoided.

Drawings

Fig. 1 is a schematic structural diagram of an intelligent self-recovery fuse according to the present invention;

FIG. 2 is a schematic diagram of another state of an intelligent self-recovery fuse according to the present invention;

fig. 3 is a wiring circuit diagram of a strong electromagnet part in the intelligent self-recovery fuse provided by the invention.

In the figure: the circuit board comprises a shell 1, a front electric connecting piece 2, a rear electric connecting piece 3, a front electric connecting plate 4, a rear electric connecting plate 5, an electric connecting spring 6, a return spring 7, a conduction plate 8, a push rod 9, a limiting plate 10, a permanent magnet 11, a weak electromagnet 12, a strong electromagnet 13, a main capacitor 14 and an auxiliary capacitor 15.

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. 1-3, an intelligent self-recovery fuse includes a housing 1, a front electric contact piece 2 and a rear electric contact piece 3 are respectively fixed on inner walls of two sides of the housing 1, a front electric contact plate 4 and a rear electric contact plate 5 are fixed on an inner top of the housing 1, the rear electric contact plate 5 abuts against the rear electric contact piece 3, an electric contact spring 6 is fixed on one end of the front electric contact plate 4 close to the front electric contact piece 2, the electric contact spring 6 abuts against the front electric contact piece 2, a conduction plate 8 is connected to an inner bottom of the housing 1 through a return spring 7, the conduction plate 8 abuts against both the front electric contact plate 4 and the rear electric contact plate 5, a main capacitor 14 and an auxiliary capacitor 15 are fixed on the inner top of the housing 1, a weak electromagnet 12 and a permanent magnet 11 are fixed on the inner bottom of the housing 1, a limiting plate 10 abutting against the permanent magnet 11 is fixed on the bottom of the weak electromagnet 12, and a strong electromagnet 13.

Strong electromagnet 13 is located directly over conduction board 8, guarantees that strong electromagnet 13 adsorbs the effective magnetic force of conduction board 8, and the bottom of conduction board 8 is fixed with the push rod 9 that runs through the shell 1 bottom, and push rod 9 is the insulator spindle, and the user of being convenient for promotes conduction board 8 and resets.

The weak electromagnet 12 and the strong electromagnet 13 are connected in parallel to a power connection circuit through conducting wires, the main capacitor 14 and the auxiliary capacitor 15 are connected in parallel to the strong electromagnet 13 and the weak electromagnet 12 through conducting wires, when the circuit is normally powered on, the strong electromagnet 13 and the weak electromagnet 12 are powered on to generate treatment, the main capacitor 14 and the auxiliary capacitor 15 are charged to store electric energy, after the circuit is disconnected, the main capacitor 14 and the auxiliary capacitor 15 are both discharged to supply power to the weak electromagnet 12 and the strong electromagnet 13, the main capacitor 14 is larger in capacity and higher in breakdown voltage than the auxiliary capacitor 15, and the auxiliary capacitor 15 is a restorable capacitor and can be automatically restored after a certain time is passed after breakdown.

In the invention, when the circuit is normally electrified, the strong electromagnet 13 is electrified to generate a strong magnetic field to have stronger magnetic attraction capacity on the conduction plate 8, so that the conduction plate 8 is kept in a good and stable abutting state with the front electric connection plate 4 and the rear electric connection plate 5, and the whole circuit is stably electrified, in the state, the magnetic force generated by the weak electromagnet 12 is weaker, the distance between the weak electromagnet 12 and the limiting plate 10 is farther, and the distance between the permanent magnet 11 and the limiting plate 10 is closer, so that the limiting plate 10 is stably processed to abut against the permanent magnet 11, the electric connection spring 6 cannot be contracted under the action of the magnetic force, and as the circuit is normally electrified, the main capacitor 14 and the auxiliary capacitor 15 which are connected into the circuit in parallel are charged;

when the power line is overloaded, the current in the power line is increased, so that the power connection spring 6 contracts in the moment of current increase, so as to be separated from the front power connection piece 2, so that the whole power line is disconnected, the power connection spring 6 contracts to drive the limiting plate 10 to move towards the weak electromagnet 12, and the limiting plate 10 abuts against the weak electromagnet 12, and the main capacitor 14 and the auxiliary capacitor 15 discharge simultaneously after the power line is disconnected, so that the weak electromagnet 12 and the strong electromagnet 13 keep the energized state, so that the strong electromagnet 13 keeps the adsorption capacity on the conduction plate 8, so that the conduction plate 8 keeps the contact state with the front power connection plate 4 and the rear power connection plate 5, and the weak electromagnet 12 keeps close to the limiting plate 10 due to the magnetic force, so that the limiting plate 10 is captured by the weak electromagnet 12, and the weak electromagnet 12 adsorbs the limiting plate 10 to keep the contraction state of the power connection spring 6, the circuit is kept in a power-off state in a short time, and the user is given time to be in an overload problem;

when the auxiliary capacitor 15 finishes discharging, the main capacitor 14 still discharges, but the whole power supply amount is reduced, so that the magnetism of the weak electromagnet 12 and the strong electromagnet 13 is weakened, but the strong electromagnet 13 is strong and still keeps the limiting capability on the conduction plate 8, and the weak electromagnet 12 is poor in property and cannot limit the limiting plate 10 any more, so that the power connection spring 6 extends and resets under the action of the self elasticity, and is abutted against the front connecting piece 2 again, so that the whole line is electrified again, the power supply is not required to be restored manually, and the power failure response is rapid during overload, and the line cannot be damaged;

when an external power utilization circuit is short-circuited, the current in the circuit is increased rapidly, so that the auxiliary capacitor 15 is broken down while the power connection spring 6 contracts, the main capacitor 14 is short-circuited in an outward discharging process, namely, the strong electromagnet 13 and the weak electromagnet 12 are completely powered off at a moment, so that the conduction plate 8 moves under the action of the elastic force of the reset spring 7 and is further separated from the front power connection plate 4 and the rear power connection plate 5, even if the power connection spring 6 is reset to be in contact with the front power connection piece 2, the whole circuit is still in a disconnected state and cannot be automatically restored, the electric danger of fire and the like caused by the connection of the circuit after the short-circuit fault is not processed is avoided, after the processing fault of a user is processed, the push rod 9 is pushed to drive the conduction plate 8 to move upwards, the front power connection plate 4 is connected with the rear power connection plate 5 after the conduction plate 8 moves upwards, the power supply of the whole circuit is recovered, so that the line remains clear and the user can release the push rod 9.

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 an intelligence self recovery fuse, includes shell (1), its characterized in that, the both sides inner wall of shell (1) is fixed with preceding electric piece (2) and back electric piece (3) respectively, the interior top of shell (1) is fixed with preceding electric plate (4) and back electric plate (5), back electric plate (5) and back electric piece (3) counterbalance, the one end that preceding electric plate (4) are close to preceding electric plate (2) is fixed with connects electric spring (6), connect electric spring (6) and preceding electric piece (2) counterbalance, the interior bottom of shell (1) is connected with conduction board (8) through reset spring (7), conduction board (8) and preceding electric plate (4) and back electric plate (5) all counterbalance, the interior top of shell (1) is fixed with main capacitor (14) and auxiliary capacitor (15), the interior bottom of shell (1) is fixed with weak electromagnet (12) and permanent magnet (11), and a limiting plate (10) which is abutted against the permanent magnet (11) is fixed at the bottom of the weak electromagnet (12), and a strong electromagnet (13) is fixed at the inner top of the shell (1).

2. An intelligent self-recovery fuse as claimed in claim 1, wherein the strong electromagnet (13) is located directly above the conducting plate (8), and the bottom of the conducting plate (8) is fixed with the push rod (9) penetrating the bottom of the housing (1).

3. An intelligent self-recovery fuse as claimed in claim 1, wherein the weak electromagnet (12) and the strong electromagnet (13) are wired in parallel into the power line, and the main capacitor (14) and the sub-capacitor (15) are wired in parallel into the power line with the strong electromagnet (13) and the weak electromagnet (12).