CN110580992A - Novel over-temperature protection fuse resistor - Google Patents
Novel over-temperature protection fuse resistor Download PDFInfo
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- CN110580992A CN110580992A CN201910787639.1A CN201910787639A CN110580992A CN 110580992 A CN110580992 A CN 110580992A CN 201910787639 A CN201910787639 A CN 201910787639A CN 110580992 A CN110580992 A CN 110580992A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
- H01C1/024—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being hermetically sealed
- H01C1/026—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being hermetically sealed with gaseous or vacuum spacing between the resistive element and the housing or casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/06—Electrostatic or electromagnetic shielding arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/16—Resistor networks not otherwise provided for
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/14—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding
- H01C3/20—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding wound on cylindrical or prismatic base
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/0241—Structural association of a fuse and another component or apparatus
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Abstract
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.
Description
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.
example one
Referring to fig. 1, in an embodiment, the novel over-temperature protection fuse resistor includes a first winding body 1, a first isolating body 2, a first fuse wire 3 and a first pin 4; the first insulating body 2 is hollow, and the first winding body 1 is arranged in the first insulating body 2; the first fuse wire 3 is wound on the outer side of the first winding body 1, and two ends of the first fuse wire 3 are connected with a first pin 4 respectively, so that current transmission is realized.
In the embodiment, the first winding body 1 is a ceramic core; the first fusible links 3 are uniformly wound around the first winding body 1.
In some embodiments, the first winding body 1 may also be one of a magnetic core, a glass fiber core, and the like.
In the embodiment, the first fuse wire 3 is made of constantan wire, and the constantan wire has a large resistance, so that the novel over-temperature protection fuse resistor has a large resistance value, an effective voltage division effect is achieved, and the current in the circuit is reduced.
In some embodiments, the first fuse wire 3 may also be a high-temperature fuse wire with a relatively large resistance, such as a nickel-copper wire, a nichrome wire, an iron-chromium-aluminum wire, an iron-chromium-nickel wire, or the like, so as to perform a voltage division function and reduce the current in the circuit.
In an embodiment, one end of the first pin 4 close to the first fuse wire 3 is connected with a first conductive cap 5 in a welding manner, and the first pin 4 is electrically connected with the first conductive cap 5; in the embodiment, the first conductive cap 5 is embedded into the open end of the first separator 2, and the open end is sealed by the sealant; the first conductive cap 5 is sleeved on the end portion of the first winding body 1, and the first conductive cap 5 and the first fuse wire 3 are connected through electric touch welding, so that current transmission among the first pin 4, the first conductive cap 5 and the first fuse wire 3 is realized.
in the embodiment, the first isolating body 2 is a hollow magnetic body, so that the novel over-temperature protection fuse resistor is isolated from the inside and the outside, and the transmission of heat generated by the first fuse wire 3 to the outside is reduced; meanwhile, the novel over-temperature protection fuse resistor can effectively play a role in shielding and isolation, and the EMC performance of the novel over-temperature protection fuse resistor is improved. In the embodiment, the first isolation body 2 has certain magnetism, so that a magnetic field is generated inside the novel over-temperature protection fuse resistor, so that an induced current is generated in the first fuse wire 3 to suppress an input overcurrent, and thus, the current in the circuit is further reduced to protect the following electronic components.
In some embodiments, the first insulator 2 may also be a hollow ceramic insulator or the like, so as to perform an isolation and shielding function, and reduce the transmission of the internal temperature of the novel over-temperature protection fuse resistor to the outside.
When the novel over-temperature protection fuse resistor is used, the novel over-temperature protection fuse resistor has larger resistance, and can play a role of voltage division in a circuit, so that the phenomenon that electronic elements in the circuit are damaged due to the fact that instantaneous energy in the circuit is too large is avoided; when the external first isolating body 2 is made of a magnetic body, the first fuse wire 3 can generate suppression current so as to suppress input overload current and reduce the influence on subsequent electronic devices in the circuit; when the current appears unusually in the circuit, novel excess temperature protection fusing resistor temperature risees gradually, when the inside temperature of novel excess temperature protection fusing resistor reaches the fusing temperature of first fuse 3, first fuse 3 fuses to the protection circuit, because the thermal-insulated effect of first isolator 2 this moment, the outside temperature of novel excess temperature protection fusing resistor is only about one hundred degrees centigrade, can not cause the too high problem of external equipment temperature, thereby effectively avoids dangerous emergence such as fused shell, explosion. In use, the first isolator 2 may also serve as an effective shielding to optimize the EMC performance of the novel over-temperature protection fuse resistor.
therefore, the novel over-temperature protection fuse well integrates the functions of over-temperature protection, the protective tube, the thermistor and the differential mode inductor into a whole, so that the number of electronic components connected in a circuit can be reduced, and the complexity of the circuit and the occupied space of the circuit are reduced.
example two
Referring to fig. 1, in an embodiment, the novel over-temperature protection fuse resistor includes a first winding body 1, a first isolating body 2, a first fuse wire 3 and a first pin 4; the first insulating body 2 is hollow, and the first winding body 1 is arranged in the first insulating body 2; the first fuse wire 3 is wound on the outer side of the first winding body 1, and two ends of the first fuse wire 3 are connected with a first pin 4 respectively, so that current transmission is realized.
in the embodiment, the first winding body 1 is a ceramic core; the first fusible links 3 are uniformly wound around the first winding body 1.
In some embodiments, the first winding body 1 may also be one of a magnetic core, a glass fiber core, and the like.
In the embodiment, the first fuse wire 3 is made of a tin-doped constantan wire, and the constantan wire has a larger resistance, so that the novel over-temperature protection fuse resistor has a larger resistance value, can effectively play a role in resisting surge, and reduces current in a circuit; since tin has a lower melting point, the first fuse wire 3 also has a lower melting point, so that the novel over-temperature protection fuse resistor can be fused when reaching a lower protection temperature.
In some embodiments, the first fuse wire 3 may also be a low-temperature fuse wire with a relatively large resistance, such as a tin-doped nickel copper wire, a tin-doped nichrome wire, a tin-doped iron-chromium-aluminum wire, a tin-doped iron-chromium-nickel wire, or the like, so as to perform a voltage division function, reduce the current in the circuit, and simultaneously perform a low-temperature fuse protection function.
In an embodiment, one end of the first pin 4 close to the first fuse wire 3 is connected with a first conductive cap 5 in a welding manner, and the first pin 4 is electrically connected with the first conductive cap 5; in the embodiment, the first conductive cap 5 is embedded into the open end of the first separator 2, and the open end is sealed by the sealant; the first conductive cap 5 is sleeved on the end portion of the first winding body 1, and the first conductive cap 5 and the first fuse wire 3 are connected through electric touch welding, so that current transmission among the first pin 4, the first conductive cap 5 and the first fuse wire 3 is realized.
In the embodiment, the first isolating body 2 is a hollow ceramic body, so that the novel over-temperature protection fuse resistor is isolated from the inside and the outside, and the transmission of heat generated by the first fuse wire 3 to the outside is reduced; meanwhile, the novel over-temperature protection fuse resistor can effectively play a role in shielding and isolation, and the EMC performance of the novel over-temperature protection fuse resistor is improved.
In some embodiments, the first insulator 2 may also be made of a magnetic material or the like to perform an isolation and shielding function. When the first isolating body 2 is made of a magnetic body, a magnetic field is generated in the novel over-temperature protection fuse resistor, so that an induced current is generated in the first fuse wire 3 to suppress an input overcurrent, and further reduce the current in a circuit to protect a rear electronic element.
When the novel over-temperature protection fuse resistor is used, the novel over-temperature protection fuse resistor has larger resistance, and can play a role of voltage division in a circuit, so that the phenomenon that electronic elements in the circuit are damaged due to the fact that instantaneous energy in the circuit is too large is avoided; when the first isolating body 2 is made of a magnetic body, a suppression current is generated in the first fuse wire 3 to suppress the input overload current, so that the current in the circuit is further reduced to protect the following electronic components; in addition, when the current appears unusually in the circuit, novel excess temperature protection fusing resistor temperature risees gradually, when the inside temperature of novel excess temperature protection fusing resistor reaches the fusing temperature of first fuse 3, first fuse 3 fuses to the protection circuit, simultaneously because the thermal-insulated effect of first isolation body 2, the outside temperature of novel excess temperature protection fusing resistor can be than only having tens of degrees centigrade than low, can not cause the too high problem of external equipment temperature, thereby effectively avoids dangerous emergence such as fused shell, explosion. In use, the first isolator 2 may also serve as an effective shielding to optimize the EMC performance of the novel over-temperature protection fuse resistor.
Therefore, the novel over-temperature protection fuse well integrates the functions of over-temperature protection, the protective tube, the thermistor and the differential mode inductor into a whole, so that the number of electronic components connected in a circuit can be reduced, and the complexity of the circuit and the occupied space of the circuit are reduced.
EXAMPLE III
Referring to fig. 2, the novel over-temperature protection fuse resistor includes a second winding 7, a second fuse wire 8, a second isolator 9 and a second pin 11; the second insulating body 9 is hollow, and the second winding body 7 is arranged in the cavity of the second insulating body 9; the second fuse wire 8 is wound on the outer side of the second winding body 7, and two ends of the second fuse wire 8 are connected with a second pin 11 respectively, so that current transmission is realized.
in the embodiment, the second winding body 7 is made of a glass fiber material; the second fuse wire 8 is uniformly wound around the second winding body 7. In an embodiment, two ends of the second winding body 7 are respectively and fixedly mounted with a third conductive cap 10, an open end of the third conductive cap 10 is sleeved on the second winding body 7, and an end of the second winding body 7 is fixed on an end surface inside the third conductive cap 10; the second fuse wire 8 and the third conductive cap 10 are connected by electric touch welding, so that current transmission is realized.
In some embodiments, the second winding body 7 may also be one of a ceramic body, a magnetic core, and the like.
in the embodiment, one end of the second pin 11 close to the second fuse wire 8 is connected with a second conductive cap 6 in a welding manner, the second conductive cap 6 is embedded into the second isolating body 9 to realize fixed installation, and the second conductive cap 6 is in threaded connection with the third conductive cap 10 to realize current transmission; the open end of the second insulating body 9 is sealed by a sealant.
In some embodiments, the second conductive cap 6 and the third conductive cap 10 may also be fixedly connected by welding, interference fit, or the like, so as to transmit the current.
In an embodiment, the second isolator 9 is made of a hollow magnetic material, so as to isolate the inside of the novel over-temperature protection fuse resistor from the outside, thereby achieving a good heat insulation and shielding effect. Meanwhile, the first isolating body 2 generates a magnetic field inside the novel over-temperature protection fuse resistor, so that an induced current is generated in the second fuse wire 8 to suppress an input overcurrent, thereby further reducing the current in the circuit to protect the following electronic components.
in some embodiments, the second insulator 9 may also be made of ceramic, etc. to achieve good thermal insulation and shielding.
In the embodiment, the second fusible link 8 is a constantan wire doped with manganese; therefore, the novel over-temperature protection fuse resistor has larger resistance, and effectively plays a role in voltage division so as to reduce current in a circuit.
In some embodiments, the second fuse wire 8 may also be implemented by other fuse wires with larger resistance, such as a manganese-doped nichrome wire, a manganese-doped nickel copper wire, a manganese-doped iron-chromium-aluminum wire, a manganese-doped iron-chromium-nickel wire, and the like, so as to increase the resistance of the novel over-temperature protection fuse resistor, so that the novel over-temperature protection fuse resistor has a good surge resistance effect.
In some embodiments, the second fusible link 8 may also be a low-temperature fusible link with a relatively large resistance, such as a tin-doped constantan wire, a tin-doped nickel-copper wire, a tin-doped nichrome wire, a tin-doped iron-chromium-aluminum wire, a tin-doped iron-chromium-nickel wire, or the like, so as to perform a voltage division function, reduce the current in the circuit, and also perform a low-temperature fusing protection function.
When the novel over-temperature protection fuse resistor is used, the novel over-temperature protection fuse resistor has larger resistance, can play a role in voltage division in a circuit, and avoids the damage to electronic elements in the circuit due to the fact that instantaneous energy in the circuit is too large. When the second isolation body 9 is made of a magnetic material, a suppression current is generated in the second fuse wire 8 to suppress an input overcurrent, so that the current in the circuit is further reduced to protect the following electronic components. In addition, when the current in the circuit is abnormal, the temperature of the novel over-temperature protection fuse resistor is gradually increased, and when the internal temperature of the novel over-temperature protection fuse resistor reaches the fusing temperature of the second fuse wire 8, the second fuse wire 8 can be fused, so that the circuit is protected; at this time, due to the heat insulation effect of the second insulating body 9, the temperature outside the novel over-temperature protection fuse resistor is not too high, and the problem of too high temperature of external equipment is not caused, so that dangers such as melting shells and explosion are effectively avoided. At the same time, the second isolator 9 can function as an effective shielding in use, thereby optimizing the EMC performance of the novel over-temperature protection fuse resistor.
therefore, the novel over-temperature protection fuse well integrates the functions of over-temperature protection, the protective tube, the thermistor and the differential mode inductor into a whole, so that the number of electronic components connected in a circuit can be reduced, and the complexity of the circuit and the occupied space of the circuit are reduced.
Example four
Referring to fig. 3, the novel over-temperature protection fuse resistor includes a third fuse 13, a third isolator 14 and a third pin 16; the third insulating body 14 is hollow, and the third fuse 13 passes through the hollow cavity in the third insulating body 14; and both ends of the third fuse 13 are connected with a third pin 16, respectively, thereby realizing current transmission.
In an embodiment, the third fusible link 13 is a constantan wire doped with manganese; therefore, the novel over-temperature protection fuse resistor has larger resistance, and effectively plays a role in voltage division so as to reduce current in a circuit.
In some embodiments, the third fuse wire 13 may also be implemented by other fuse wires with a relatively large resistance, such as a manganese-doped nichrome wire, a manganese-doped nickel copper wire, a manganese-doped iron-chromium-aluminum wire, a manganese-doped iron-chromium-nickel wire, and the like, so as to increase the resistance of the novel over-temperature protection fuse resistor, so that the novel over-temperature protection fuse resistor has a good surge resistance effect.
In some embodiments, the third fusible link 13 may also be a low-temperature fusible link with a relatively large resistance, such as a tin-doped constantan wire, a tin-doped nickel-copper wire, a tin-doped nichrome wire, a tin-doped iron-chromium-aluminum wire, a tin-doped iron-chromium-nickel wire, or the like, so as to perform a voltage division function, reduce the current in the circuit, and also have a function of a low-temperature fusing protection circuit.
in an embodiment, the two ends of the third fuse 13 are respectively connected with a fifth conductive cap 15 by electric butt welding, the fifth conductive cap 15 is embedded into the open end of the third insulating body 14, and the open end of the fifth conductive cap 15 is arranged corresponding to the cavity in the third insulating body 14; the open end of the third insulating body 14 is sealed by a sealant. In an embodiment, a fourth conductive cap 12 is welded to one end of the third pin 16 close to the third fuse 13, and the fourth conductive cap 12 is embedded in the third insulating body 14 and is in threaded fit connection with the fifth conductive cap 15, so as to implement current transmission.
In some embodiments, the fourth conductive cap 12 and the fifth conductive cap 15 can be fixedly connected and electrically connected by welding, interference fit, or the like.
in an embodiment, the third insulating body 14 is made of a hollow ceramic body, so as to separate the inside of the novel over-temperature protection fuse resistor from the outside, thereby achieving a good heat insulation and shielding effect.
In some embodiments, the third insulator 14 may also be made of magnetic material, such as insulator, to achieve good thermal insulation and shielding. When the third insulating body 14 is made of a magnetic material, a magnetic field is generated inside the novel over-temperature protection fuse resistor, so that an induced current is generated in the third fuse wire 13 to suppress an input overcurrent, thereby further reducing the current in the circuit to protect the following electronic components.
When the novel over-temperature protection fuse resistor is used, the novel over-temperature protection fuse resistor has larger resistance, can play a role in voltage division in a circuit, and avoids the damage to electronic elements in the circuit due to the fact that instantaneous energy in the circuit is too large. When the third isolator 14 is made of a magnetic material, a suppression current is generated in the third fuse 13 to suppress an input overcurrent, thereby further reducing the current in the circuit to protect the following electronic components. When the current in the circuit is abnormal, the temperature of the novel over-temperature protection fuse resistor is gradually increased, and when the internal temperature of the novel over-temperature protection fuse resistor reaches the fusing temperature of the third fuse wire 13, the third fuse wire 13 can be fused, so that the circuit is protected; at this time, due to the heat insulation effect of the third insulating body 14, the temperature outside the novel over-temperature protection fuse resistor is not too high, so that the problem of too high temperature of external equipment is not caused, and the danger of shell melting, explosion and the like is effectively avoided. At the same time, the third isolator 14 may serve as an effective shielding in use, thereby optimizing the EMC performance of the novel over-temperature protection fuse resistor.
Therefore, the novel over-temperature protection fuse well integrates the functions of over-temperature protection, the protective tube, the thermistor and the differential mode inductor into a whole, so that the number of electronic components connected in a circuit can be reduced, and the complexity of the circuit and the occupied space of the circuit are reduced.
EXAMPLE five
Referring to fig. 4, the novel over-temperature protection fuse resistor includes a third winding 17, a fourth fuse wire 18, a fourth isolator 21 and a fourth pin 20; the fourth insulating body 21 is hollow, the third winding body 17 is arranged in the fourth insulating body 21, the fourth fuse wire 18 is wound on the third winding body 17, and two ends of the fourth fuse wire 18 are connected with a fourth pin 20 respectively, so that current transmission is realized.
In the embodiment, the fourth spacer 21 is a semi-closed plastic frame, and the bottom thereof is open; a fixed block 22 is arranged at the opening end of the fourth isolating body 21, and the opening end of the fourth isolating body is closed, so that the novel over-temperature protection fuse resistor is isolated from the inside and the outside, and heat exchange is reduced; one end of the fourth pin 20 passes through the fixing block 22 and is connected with the fourth fuse wire 18 in the fourth insulating body 21, and the fixing block 22 fixes the fourth pin 20.
In the embodiment, a sixth conductive cap 19 is welded and connected to one end of the fourth pin 20 extending into the fourth isolator 21; the sixth conductive cap 19 is sleeved on the end of the third winding core body 17 and fixed; the fourth fusible link 18 is uniformly wound on the third winding body 17, two ends of the third winding body 17 are respectively and fixedly connected with one sixth conductive cap 19, and two ends of the fourth fusible link 18 are respectively connected with the sixth conductive cap 19 through electric touch welding, so that current transmission is realized.
In the embodiment, the fourth fusible link 18 is uniformly wound around the third winding body 17; the fourth fuse wire 18 is a constantan wire doped with manganese; therefore, the novel over-temperature protection fuse resistor has larger resistance, effectively plays a role in voltage division so as to reduce current in a circuit and has a good anti-surge effect.
In some embodiments, the fourth fuse wire 18 may also be made of other fuse wires with larger resistance, such as a manganese-doped nichrome wire, a manganese-doped nickel copper wire, and the like, so as to increase the resistance of the novel over-temperature protection fuse resistor, so that the novel over-temperature protection fuse resistor has a good surge resistance effect.
In some embodiments, the fourth fusible link 18 may also be a low-temperature fusible link with a relatively large resistance, such as a tin-doped constantan wire, a tin-doped nickel-copper wire, a tin-doped nichrome wire, a tin-doped iron-chromium-aluminum wire, a tin-doped iron-chromium-nickel wire, or the like, so as to perform a voltage division function, reduce the current in the circuit, and also perform a low-temperature fusing protection function.
in an embodiment, the third winding body 17 is made of a glass fiber material. In some embodiments, the third winding body 17 may also be a core body such as a ceramic core or a magnetic core.
When the novel over-temperature protection fuse resistor is used, the novel over-temperature protection fuse resistor has larger resistance, can play a role in voltage division in a circuit, and avoids the damage to electronic elements in the circuit due to the fact that instantaneous energy in the circuit is too large. In addition, when the current appears unusually in the circuit, fourth fuse 18 can the temperature rise, and novel excess temperature protection fusing resistor ware temperature risees gradually, and when inside temperature reached the fusing temperature of fourth fuse 18, fourth fuse 18 fuses to the protection circuit, because the thermal-insulated effect of fourth isolator 21 this moment, novel excess temperature protection fusing resistor ware outside temperature can not be too high, therefore can not cause the too high problem of external equipment temperature, thereby effectively avoids dangerous emergence such as fused shell, explosion.
Therefore, the novel over-temperature protection fuse well integrates the functions of the protective tube, the thermistor and over-temperature protection into a whole, and reduces the complexity of a circuit and the occupied space of the circuit.
EXAMPLE six
Referring to fig. 5, in an embodiment, the novel over-temperature protection fuse resistor includes a fourth winding 23, a fifth fuse 25 and a fifth pin 27; the fifth fuse 25 is wound on the outer side of the fourth winding body 23, and two ends of the fifth fuse 25 are connected to a fifth pin 27, respectively, so as to realize current transmission.
in the embodiment, the fourth winding body 23 is coated with an insulating layer 24, and covers the fifth fusible link 25.
In an embodiment, the fourth winding 23 is a magnetic core, and the fifth fusible link 25 is uniformly wound on the fourth winding 23.
In some embodiments, the fourth winding body 23 may also be one of a ceramic core, a glass fiber core, and the like.
In the embodiment, the fifth fuse wire 25 is made of a nichrome wire doped with tin, and the nichrome has a larger resistance, so that the novel over-temperature protection fuse resistor has a larger resistance value, and the current in a circuit can be effectively reduced; since tin has a lower melting point, the fifth fusible link 25 also has a lower melting point.
In some embodiments, the fifth fusible link 25 may also be a tin-doped nickel copper wire, a tin-doped constantan wire, a tin-doped iron chromium aluminum wire, a tin-doped iron chromium nickel wire, or other low-temperature fusible links with relatively large resistance, so as to perform a voltage division function, reduce the current in the circuit, and also perform a low-temperature fusing protection function.
In an embodiment, a seventh conductive cap 26 is welded and connected to one end of the fifth pin 27 close to the fifth fuse 25, and the fifth pin 27 is electrically connected to the seventh conductive cap 26 by welding; in an embodiment, the seventh conductive cap 26 is sleeved at the end of the fourth winding body 23, and the seventh conductive cap 26 is connected to the fifth fusible link 25 by electrical contact welding, so as to realize current transmission among the fifth pin 27, the seventh conductive cap 26 and the fifth fusible link 25; in an embodiment, the seventh conductive cap 26 is coated by the insulating layer 24.
When the novel over-temperature protection fuse resistor is used, the novel over-temperature protection fuse resistor has larger resistance, can play a role in voltage division in a circuit, and avoids the damage to electronic elements in the circuit due to the fact that instantaneous energy in the circuit is too large. When the current in the circuit is abnormal, the temperature of the novel over-temperature protection fuse resistor gradually rises, the temperature of the novel over-temperature protection fuse resistor easily reaches the fusing temperature of the fifth fuse wire 25, and the fifth fuse wire 25 fuses, so that the circuit is protected; at the moment, the external temperature of the novel over-temperature protection fuse resistor is lower and only dozens of degrees centigrade, and the problem of overhigh temperature of external equipment can not be caused, so that the dangers of shell melting, explosion and the like can be effectively avoided.
Therefore, the novel over-temperature protection fuse well integrates the functions of the protective tube, the thermistor and over-temperature protection into a whole, and reduces the complexity of a circuit and the occupied space of the circuit.
the above-described embodiments are only one of the preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (10)
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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787639.1A CN110580992A (en) | 2019-08-26 | 2019-08-26 | Novel over-temperature protection fuse resistor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787639.1A CN110580992A (en) | 2019-08-26 | 2019-08-26 | Novel over-temperature protection fuse resistor |
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| CN110580992A true CN110580992A (en) | 2019-12-17 |
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| CN201910787639.1A Pending CN110580992A (en) | 2019-08-26 | 2019-08-26 | Novel over-temperature protection fuse resistor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035663A (en) * | 2021-02-06 | 2021-06-25 | 安徽省昌盛电子有限公司 | Multi-point fusing type low-temperature fusing wire-wound resistor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447263A (en) * | 2008-12-23 | 2009-06-03 | 郑东浩 | Stable-typed fusible safe resistor and production method thereof |
| CN103440943A (en) * | 2013-09-02 | 2013-12-11 | 张大军 | Wire-wound thermal fuse resistor |
| CN203787234U (en) * | 2014-01-16 | 2014-08-20 | 深圳市嘉莹达电子有限公司 | Over-temperature protection type wire wrapping fuse resistor |
| CN204117726U (en) * | 2014-09-18 | 2015-01-21 | 肖贻军 | Two-in-one overheat protector type coiling fuse-resistor |
| CN109817399A (en) * | 2018-04-02 | 2019-05-28 | 严宗周 | A kind of inductive type fusing resistor |
-
2019
- 2019-08-26 CN CN201910787639.1A patent/CN110580992A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447263A (en) * | 2008-12-23 | 2009-06-03 | 郑东浩 | Stable-typed fusible safe resistor and production method thereof |
| CN103440943A (en) * | 2013-09-02 | 2013-12-11 | 张大军 | Wire-wound thermal fuse resistor |
| CN203787234U (en) * | 2014-01-16 | 2014-08-20 | 深圳市嘉莹达电子有限公司 | Over-temperature protection type wire wrapping fuse resistor |
| CN204117726U (en) * | 2014-09-18 | 2015-01-21 | 肖贻军 | Two-in-one overheat protector type coiling fuse-resistor |
| CN109817399A (en) * | 2018-04-02 | 2019-05-28 | 严宗周 | A kind of inductive type fusing resistor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035663A (en) * | 2021-02-06 | 2021-06-25 | 安徽省昌盛电子有限公司 | Multi-point fusing type low-temperature fusing wire-wound resistor |
| CN113035663B (en) * | 2021-02-06 | 2023-09-15 | 安徽省昌盛电子有限公司 | Multi-point fusing type low-temperature fusing wire-wound resistor |
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Application publication date: 20191217 |