阅读说明：本技术 新型过温保护熔断电阻器 (Novel over-temperature protection fuse resistor ) 是由 严宗周 于 2019-08-26 设计创作，主要内容包括：本发明属于电阻器领域,涉及一种新型过温保护熔断电阻器,包括隔离体,用于隔离所述新型过温保护熔断电阻器的熔断丝；熔断丝,设置于所述隔离体内,所述熔断丝选用大阻值的高温熔断材质的熔断丝或大阻值的低温熔断材质的熔断丝；以及引脚,所述隔离体两端分别设置有一个引脚,所述引脚与熔断丝连接。本发明提供的新型过温保护熔断电阻器将保险管、热敏电阻、差模电感和过温保护的功能四合一,同时可优化电阻器的EMC性能。(The invention belongs to the field of resistors, and relates to a novel over-temperature protection fuse resistor, which comprises an isolating body and a fuse wire, wherein the isolating body is used for isolating the fuse wire of the novel over-temperature protection fuse resistor; the fuse wire is arranged in the isolation body and is made of a high-resistance high-temperature fusing material or a high-resistance low-temperature fusing material; and the pins are arranged at two ends of the isolating body respectively and are connected with the fuse wire. The novel over-temperature protection fuse resistor integrates the functions of a protective tube, a thermistor, differential mode inductance and over-temperature protection into a whole, and simultaneously can optimize the EMC performance of the resistor.)

1. A novel over-temperature protection fuse resistor, comprising:

an isolator for isolating a fuse wire of the novel over-temperature protection fuse resistor;

The fuse wire is arranged in the isolation body; and the pins are arranged at two ends of the isolating body respectively and are connected with the fuse wire.

2. The novel over-temperature protection fuse resistor as claimed in claim 1, wherein the fuse is a high-temperature fusing material with a large resistance.

3. The over-temperature protection fuse resistor as claimed in claim 2, wherein the fuse wire is selected from a group consisting of a nickel-copper wire, a constantan wire, a nichrome wire, an iron-chromium-aluminum wire, and an iron-chromium-nickel wire.

4. the novel over-temperature protection fuse resistor as claimed in claim 2, wherein the fuse wire is selected from one of constantan wire doped with manganese, nichrome wire doped with manganese, nickel copper wire doped with manganese, iron chromium aluminum wire doped with manganese or iron chromium nickel wire doped with manganese.

5. The novel over-temperature protection fuse resistor as claimed in claim 1, wherein the fuse is a high-resistance low-temperature fuse material fuse.

6. The novel over-temperature protection fuse resistor as claimed in claim 5, wherein the fuse wire is selected from one of a constantan wire doped with tin, a nickel copper wire doped with tin, a nichrome wire doped with tin, an iron chromium aluminum wire doped with tin, or an iron chromium nickel wire doped with tin.

7. the novel over-temperature protection fuse resistor as claimed in claim 1, wherein a winding is disposed in the insulator, and the fuse wire is wound around the winding.

8. The novel over-temperature protection fuse resistor as claimed in claim 7, wherein the winding body is selected from one of a ceramic core, a magnetic core and a glass fiber.

9. the novel over-temperature protection fuse resistor as claimed in claim 1, wherein the spacer is made of ceramic or magnetic material.

10. A novel over-temperature protection fuse resistor, comprising:

The winding body is used for supporting a fuse wire of the novel over-temperature protection fuse resistor;

the fuse wire is wound on the winding body;

The insulating layer is coated on the winding body and coats the fuse wire; and

The two ends of the winding body are respectively provided with one pin, and the pins are connected with the fuse wire;

The fuse wire is made of a low-temperature fusing material with high resistance.

Technical Field

The invention belongs to the field of resistors and relates to a novel over-temperature protection fuse resistor.

Background

When a switching power supply or a circuit with a capacitor core is in the current-on moment, the energy stored by the capacitor in the circuit can reach E = CV in the moment²2, the instantaneous current in the circuit can also reach hundreds of amperes, or according to ohm's law U/R = I, when the input voltage is 220V, the peak value isV, when the loop resistance is 3R, the current is about 100A, and the current is too large. Electronic devices such as bridge stacks and capacitors in the circuit can be damaged and exploded instantly due to overlarge current.

One solution adopted in the market at present is that a fuse box or a fuse is added in a circuit, the voltage and the current generated when the circuit is switched on are reduced by absorption through a piezoresistor, then the voltage and the current in the circuit are reduced for the second time through a thermistor and impedance in the thermistor, and then the voltage and the current enter a capacitor through a bridge stack and the like; however, this method has the disadvantage that the thermistor has a resistor at the moment of energization, but as the working time of the thermistor is prolonged, the temperature of the thermistor increases, the resistance of the thermistor decreases, the voltage dividing effect of the thermistor gradually decreases, and when the thermistor is in a half-short circuit state, the temperature of the thermistor is very high, which may cause danger such as melting.

another common solution in the market at present adopts the wire winding protective tube to replace a piezoresistor, and because the resistance value of the wire winding protective tube is fixed, when the wire winding protective tube is in a half-short circuit state, the temperature of the wire winding protective tube still can be higher, however, the self melting point of the wire winding protective tube is higher at present, and when the temperature of the wire winding protective tube is higher, dangers such as shell melting can also exist.

In addition, over-temperature protection two-in-one fuse resistor is also appeared in the market, however, the fuse resistor has complex process and high cost and has no poor mode function.

Disclosure of Invention

the invention aims to provide a novel over-temperature protection fuse resistor aiming at the defects of the prior art so as to realize the over-temperature protection function and protect the safety of a used circuit.

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

A novel over-temperature protection fuse resistor, comprising:

An isolator for isolating a fuse wire of the novel over-temperature protection fuse resistor;

The fuse wire is arranged in the isolation body; and

the fuse wire comprises pins, wherein two ends of the isolating body are respectively provided with one pin, and the pins are connected with the fuse wire.

Furthermore, the fuse wire is made of high-resistance high-temperature fusing materials.

Furthermore, the fuse wire can be one of a nickel-copper wire, a constantan wire, a nichrome wire, an iron-chromium-aluminum wire or an iron-chromium-nickel wire.

Furthermore, the fuse wire can be one of a manganese-doped constantan wire, a manganese-doped nichrome wire, a manganese-doped nickel-copper wire, a manganese-doped iron-chromium-aluminum wire or a manganese-doped iron-chromium-nickel wire.

Furthermore, the fuse wire is made of a high-resistance low-temperature fusing material.

Furthermore, the fuse wire can be one of a constantan wire doped with tin, a nickel copper wire doped with tin, a nickel-chromium alloy wire doped with tin, an iron-chromium-aluminum wire doped with tin or an iron-chromium-nickel wire doped with tin.

Furthermore, a winding body is arranged in the isolating body, and the fuse wire is wound on the winding body.

Further, the winding body is one of a ceramic core, a magnetic core or a glass fiber.

Further, the isolating body is made of ceramic or magnetic materials.

In addition, a novel over-temperature protection fuse resistor includes:

The winding body is used for supporting a fuse wire of the novel over-temperature protection fuse resistor;

The fuse wire is wound on the winding body;

The insulating layer is coated on the winding body and coats the fuse wire; and

The two ends of the winding body are respectively provided with one pin, and the pins are connected with the fuse wire;

The fuse wire is made of a low-temperature fusing material with high resistance.

The invention has the beneficial effects that:

1. according to the invention, the high-temperature fuse wire with large resistance is adopted, and the isolating body is arranged on the outer side of the fuse wire to isolate the internal heat generation from the outside, so that the novel over-temperature protection fuse resistor has larger resistance, the current in a circuit is reduced, and the effect of resisting surge is achieved; meanwhile, the external transmission of the internal temperature can be avoided, and the danger that the resistor is positioned in equipment and the temperature is too high to cause shell melting and the like is avoided;

2. In the invention, the isolator is arranged outside the novel over-temperature protection fuse resistor, so that the effect of optimizing the EMC of the resistor can be effectively achieved, namely the interference (EMI) of the resistor on external electronic devices is reduced, and the anti-interference capability (EMS) of the resistor is improved;

3. In the invention, when the separator is made of a magnetic body, the fuse wire can generate a suppression current and suppress the input overload current, thereby reducing the current in the circuit and protecting other electronic components in the circuit;

4. In the invention, the fuse wire doped with the low-melting-point material is adopted to replace the fuse wire of a common winding fuse tube, so that the lower fusing temperature of the fuse wire can be ensured under the condition of ensuring higher resistance, and the use safety of external equipment is further ensured;

5. The novel over-temperature protection fuse resistor provided by the invention also has the function of a fuse, avoids the damage to electronic devices in the circuit due to the instantaneous generation of over-high energy when the circuit is electrified, and simultaneously can protect the use of the circuit and prevent the shell of external equipment from being melted due to the generation of over-temperature.

Drawings

FIG. 1 is a schematic diagram of a novel over-temperature protection fuse resistor according to embodiments one and two;

FIG. 2 is a schematic diagram showing the structure of a fuse resistor of the third embodiment;

FIG. 3 is a schematic diagram showing a configuration of a fuse resistor of the fourth embodiment;

FIG. 4 is a schematic diagram showing the structure of a fuse resistor of the fifth embodiment;

FIG. 5 is a schematic diagram of a fuse resistor of the sixth embodiment.

The labels in the figure are: 1-a first winding core, 2-a first isolating body, 3-a first fuse wire, 4-a first pin and 5-a first conductive cap;

6-a second conductive cap, 7-a second winding core, 8-a second fuse, 9-a second separator, 10-a third conductive cap and 11-a second pin;

12-a fourth conductive cap, 13-a third fuse, 14-a third isolator, 15-a fifth conductive cap, 16-a third pin;

17-a third winding body, 18-a fourth fuse wire, 19-a sixth conductive cap, 20-a fourth pin, 21-a fourth isolator and 22-a fixing block;

23-fourth winding body, 24-insulating layer, 25-fifth fuse, 26-seventh conductive cap, and 27-fifth pin.

Detailed Description

reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

referring to fig. 1 to 4, in an embodiment, there is provided a novel over-temperature protection fuse resistor, including: an isolator for isolating a fuse wire of the novel over-temperature protection fuse resistor; the fuse wire is arranged in the isolation body; and the pins are arranged at two ends of the isolating body respectively and are connected with the fuse wire. In an embodiment, when the novel over-temperature protection fuse resistor is used for welding a circuit board, the pin is electrically connected with the circuit board; the isolator sets up outside the fuse, can effectively avoid the produced heat of fuse to external transmission to the temperature of avoiding novel excess temperature protection fusing resistor to produce melts external equipment's shell, and then has avoided dangerous appearance such as fused shell. The fuse wire of the novel over-temperature protection fuse resistor can be used in the application scenes of circuits needing safety, such as a quick charging circuit, a switching circuit, a main transformer circuit, a computer display and the like.