CN212625469U - Fuse fusing indicating device - Google Patents

Abstract

The utility model discloses a fuse fusing indicator, which comprises a shell, a fuse and a glass tube filled with luminous discharge gas, wherein the glass tube is arranged inside the indicator; when the circuit is normally conducted, current flows through the fuse, when the circuit is overloaded or short-circuited, the fuse is fused, and the current flows through the luminous discharge gas of the glass tube, so that the glass tube emits light to remind debugging personnel to replace the glass tube; just the utility model discloses simple structure, low cost, the production of being convenient for.

Description

Fuse fusing indicating device

Technical Field

The utility model belongs to a can judge whether effective indicating device of fuse fuses, especially fuse fuses indicating device based on gas-emitting discharge.

Background

In many complex circuits, there are fuses and similar fuse devices present. When a circuit fails or is abnormal, the current is increased continuously, which may damage some important devices in the circuit, cause unnecessary loss, and even cause a fire disaster. If the fuse is properly and reasonably arranged in the circuit, the fuse can automatically melt and cut off the current when the current abnormally rises to a certain temperature, so that the circuit is protected.

As a protection device in the circuit, when the fuse wire passes through the allowable working current, the emitted heat and the generated heat are balanced, the heat is not accumulated in the melt to cause the temperature of the melt to rise, and therefore the fuse wire does not reach the melting point of the fuse wire to be fused. When the current passing through the fuse reaches a certain value, the heat converted by the electric energy is increased, the heat dissipation speed cannot keep pace with the heating speed, the heat can be gradually accumulated on the melt, the temperature of the melt is increased, and when the temperature reaches the melting point of the fuse, the fuse is fused, the circuit is disconnected, and the protection effect is achieved.

In the process of solving the fault problem, fuse fusing is a simpler circuit fault, if the fault of the fuse can be found in time, the situation that the system is electrified again on the premise of the fault, so that the circuit is damaged secondarily is avoided. However, the existing method for judging whether the fuse is fused by the common fuse is not obvious enough, so that a worker cannot find and solve the problem in time, and time is wasted in the process of debugging the circuit.

In addition, the protection circuit applied to the automobile often needs a plurality of fuses to function together in the circuit, and when a fault occurs, a maintenance worker can accurately find the fused fuse in a narrow space, which is a problem of time waste.

The other problem is that when light is obviously insufficient, when a circuit has similar problems, the problem of troubleshooting of a fused fuse is a laborious problem, and particularly, a circuit with a plurality of fuse devices for protection in the circuit is difficult to troubleshoot which fuse is fused, which increases difficulty for the work of debugging personnel.

Therefore, it is worth studying how to quickly find out the failed fuse and replace it, and minimize the damage to the circuit while the operation is simple.

CN206312859U discloses a fuse fusing recognition device and subassembly, contains smell warning module and the trigger module of setting, utilizes the smell of identification material to trigger and judges that the fuse device fuses. However, the utility model has some disadvantages, such as: the air tightness of the device has no specific indication level, and the air tightness of the device cannot be ensured; because gas has volatility, after the fuse device fuses and triggers the gas emission module, if debugging personnel do not arrive in time in a short time, gas is all diffused, and the fuse fusing can not be judged according to the principle at the moment.

CN20067864U discloses a fuse box capable of indicating fuse fusing, which has an indicating window on the fuse plug, and is glowed when the fuse fuses, thereby indicating the fuse fusing state, but the device is too complex, the fuse box device is large, occupies a large space on the circuit board, and is not beneficial to the placement of components.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a fuse fusing recognition device based on gas luminescence discharges is provided to solve and can not accurately discern the problem whether the fuse breaks off at the debugging circuit in-process at present.

The utility model discloses a realize like this, a fuse fusing indicating device, the device includes: the device comprises a shell, a fuse and a glass tube filled with luminous discharge gas, wherein the glass tube is connected in parallel at two ends of the fuse and is arranged in the shell, two ends of the shell are fixed by copper caps, the fuse is connected with the copper caps and penetrates through the shell, and the fuse and the glass tube are welded through a lead.

Furthermore, the gap between the shell and the copper cap is filled with adhesive, and the selected adhesive is made of resin, so that the air tightness of the device can be ensured.

Furthermore, the fuse is made of lead-antimony alloy.

Further, the shell is a transparent glass tube.

Furthermore, the glass tube and the shell are made of lime glass tubes.

Further, the glass tube is connected with a voltage dividing resistor in series.

Furthermore, two ends of the two copper caps are respectively welded with the lead in a spot welding mode, and the other end of the lead is welded on two pole parts of the fuse in the same mode.

Compared with the prior art, the utility model, beneficial effect lies in: the utility model has simple structure, low cost and convenient batch production; and the effect of prompting circuit debugging personnel is obvious, and convenience is provided for the maintenance personnel to carry out work. The fuse of the utility model can not only break the circuit to achieve the function of protecting the circuit when the circuit is overloaded, but also can clearly distinguish the fused fuse device by the gas luminous discharge principle, thereby facilitating the debugging staff to carry out maintenance and debugging work; the utility model discloses simple structure, safe and reliable, the cost is lower, is fit for batch production.

Drawings

Fig. 1 is a block diagram illustrating a fuse fusing indicator based on gas light-emitting discharge according to an exemplary embodiment of the present invention;

fig. 2 is a partial block diagram of an exemplary embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In many circuits, there are protection devices for the circuit, fuses and similar fuse devices. When the circuit is in a normal working state, the system normally runs, and the fuse only plays a role of conducting the circuit at the moment. However, when the circuit is overloaded and the current is too large, which may damage the circuit, the fuse device can be heated rapidly, when the circuit is heated to a certain temperature, the fuse is fused and disconnected, but the current fuse device cannot provide more accurate information for the debugging staff of the circuit, sometimes a large number of fuses exist in a complex circuit, and it is very important to accurately find out the failed fuse and replace the failed fuse in time when the circuit is overloaded and failed.

The utility model provides an effective recognition device when fusing fuse, as shown in figure 1, including shell 10, copper cap 20, glass tube 30, luminous discharge gas 40, fuse 50, viscose 60, resistance 70, the material of glass tube 30 and shell 10 is lime glass, glass tube 30 is arranged in shell 10, luminous discharge gas 40 is equipped with in glass tube 30, selected gas 40 is in low voltage circuit, select rather than assorted low voltage discharge luminous gas, in the medium voltage circuit, select rather than want assorted medium voltage discharge luminous gas, in the high voltage circuit, select rather than want assorted high voltage discharge luminous gas, glass tube 30 both ends are fixed with the copper cap, and weld the wire respectively in fuse 50 one end and glass tube copper cap one end, copper cap 20 overlaps on shell 10, fuse 50 is passed in the middle of, fill with viscose 60 in the clearance that shell 10 and copper cap 20 are connected, the selected adhesive 60 is made of resin, so that the air tightness of the device can be ensured, and the fuse 50 is connected with the copper cap 20 and penetrates through the shell 10.

Preferably, the fuse is made of lead-antimony alloy, and the fuse in the normally-conducted circuit is in accordance with the specification of the circuit, namely, the fuse with the same type and the same specification is selected, and the resistance value of the fuse is smaller; the electrode part is made of alloy with good conductivity, certain mechanical strength, insulating property and heat resistance.

Preferably, the housing is a glass tube. In particular, the glass tube selected is a transparent glass tube.

Preferably, the glass tube containing the luminous discharge gas is made of transparent glass with high hardness, such as lime glass, so as to achieve the purposes of protecting the internal gas and preventing the device from being damaged by the energy released when the fuse is fused.

The specific material of the copper cap can be selected from H62-H65, so that the copper cap has good contact conductivity with a circuit, good mechanical property and plasticity and low cost. The glass tube filled with luminous discharge gas is fixed by two copper caps, two ends of the two copper caps are respectively welded with a lead with good hard conductive performance by spot welding, the other end of the lead is welded on two electrode parts of the fuse in the same way, the air tightness of the glass tube is ensured by using viscose glue, and the air tightness grade can be IP 55. Alternatively, the lead has good heat resistance, and the stainless steel is a lead with a layer of nickel or other metal plated on the copper surface.

The shell should have good gas tightness, and glue is injected into the gap between the copper cap and the glass tube to ensure the gas tightness of the device. The tightness rating here may be chosen as IP 54.

The light-emitting discharge gas should meet the specifications of the circuit. In the low-voltage circuit, selecting the low-voltage discharge luminous gas matched with the low-voltage discharge luminous gas; in the medium-voltage circuit, selecting medium-voltage discharge luminous gas matched with the medium-voltage discharge luminous gas; in the high-voltage circuit, a high-voltage discharge luminous gas matched with the high-voltage discharge luminous gas is selected.

The glass tube is connected in series with a voltage dividing resistor as a resistor 70 of the fault display circuit, so as to achieve the function of voltage division.

When the circuit normally works, as shown in fig. 1, the heat emitted by the fuse 50 in the fuse device through the allowed working current and the generated heat reach balance, and the heat cannot be accumulated in the melt to cause the temperature of the melt to rise, so that the fuse 50 cannot reach the melting point thereof to be fused, the fuse 50 cannot be disconnected, and the phenomenon that the gas in the glass tube 30 emits light and discharges electricity cannot occur; however, when a circuit fault such as short circuit, ignition, overload and the like occurs in the circuit, as shown in fig. 2, the current passing through the fuse 50 reaches a certain value, the heat energy converted by the electric energy is excessive, the heat dissipation speed cannot follow the heating speed, so that the energy is accumulated on the melt, and finally the fuse 50 is disconnected, at this time, the current does not pass through the fuse, but passes through the glass tube which is connected in parallel with the upper part of the fuse 50 and is filled with the luminous discharge gas, and the current is transmitted through the luminous discharge gas 40, but because the resistance R of the luminous discharge gas is far greater than the resistance R of the fuse, the voltage at two ends of the fuse device is equal to the power voltage, so that the gas 40 in the glass tube generates the luminous discharge phenomenon, and the glass tube emits light, thereby reminding debugging workers of the circuit to recognize and replace more conveniently.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. A fuse blow indicating device, the device comprising: the device comprises a shell, a fuse and a glass tube filled with luminous discharge gas, wherein the glass tube is connected in parallel at two ends of the fuse and is arranged in the shell, two ends of the shell are fixed by copper caps, the fuse is connected with the copper caps and penetrates through the shell, and the fuse and the glass tube are welded through a lead.

2. The device according to claim 1, characterized in that the gap between the housing and the copper cap is filled with an adhesive, the adhesive being selected to be of a resin material, which ensures the tightness of the device.

3. The apparatus of claim 1, wherein said fuse is a lead-antimony alloy.

4. The apparatus of claim 1, wherein the housing is a transparent glass tube.

5. The apparatus of claim 1, wherein the glass tube and the housing are lime glass tubes.

6. The apparatus of claim 1 wherein said glass tube is connected in series with a voltage divider resistor.

7. The apparatus of claim 1, wherein both ends of the two caps are respectively spot-welded to the lead wires, and the other ends of the lead wires are similarly spot-welded to both pole portions of the fuse.

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