KR200457814Y1 - Heating Wire without Electromagnetic Wave - Google Patents

Abstract

The present invention relates to an electromagnetic wave shielding heating wire, and more particularly, a heating wire, a first sheath surrounding the heating wire, a lead wire wound on an outer circumferential surface of the first sheath, and one end of which is connected to one end of the heating wire, and the lead wire And a second coating covering the thin film, a thin film layer covering the outer surface of the second coating, a third coating covering the outer surface of the thin film layer, and a connecting lead wire electrically connecting the other end of the lead wire to the thin film layer. And the other end of the lead wire and one end of the thin film layer are electrically connected and the other end is not connected, one end of the thin film layer is grounded and the other end is not grounded at the time of power supply, so as to one end of the heating wire. It relates to an electromagnetic wave blocking heating line, characterized in that only power is supplied.

Description

Electromagnetic Wave Blocking Heating Wire {Heating Wire without Electromagnetic Wave}

The present invention relates to an electromagnetic shielding heating wire, and more particularly, to lower the voltage difference between the lead wire and the thin film, to reduce the occurrence of breakdown voltage arc, to prevent sudden overheating, and to increase the adhesion and effective contact cross-sectional area of the coating and lead wire The present invention relates to a non-magnetic heating wire for bedding, which completely shields electric charges charged on the heating wire surface by reducing the spacing of lead wires.

Common heating wires that are used as heating elements in beddings, such as electric blankets, electric mats, or poultice mats, generally include a ventricle made of polyester thread or glass wool, a heating wire spirally wound around the outer circumference of the ventricle, and insulation on the outer circumference of the heating wire. It consists of an inner insulator which is exposed in order to be exposed, a shield which is wired and grounded in the form of a conductor or a net on the outer circumferential surface of the inner insulator, and an outer insulator coated on the shield. In the above configuration, the heating wire and the shield are electrically connected in series so that each end is electrically connected in series, and each end thereof is a power input terminal respectively connected to the (+) (-) terminal of the power source. Becomes

Since electricity flows through the heating line, an electric field and an induction magnetic field are generated. It is well known that these electromagnetic waves have a bad effect on the human body. Therefore, it is very important to cut off electromagnetic waves in heating devices such as bedding materials that are in contact with the human body for a long time.

Usually, the electromagnetic wave shielding heating wire has a first covering surrounding the ventricle and the heating wire on the outer side of the ventricle and the heating wire, and another heating wire is spirally wound on the outer side of the first covering. Through this configuration, the heating wire becomes a path in which the electric current input to the heating wire is reversed, and thus the direction of current flow of the heating wire and the heating wire is reversed, thereby shielding the induced magnetic field.

In order to shield the electric field, a metal shield braid or a thin film is placed outside the second coating, and the excitation and the ground side of the power supply tip are connected to block the electric field. Here, the first cover and the second cover is made of a synthetic resin material for the insulation function.

However, since the heating voltage value across the heating wire is more than tens of hundreds of volts, the voltage difference generated here is emitted as an electric field electromagnetic wave as it is, so that the thickness of the second coating is made very thick to withstand the withstand voltage and heat resistance by the high voltage at both ends of the heating wire. making.

This high voltage difference causes a high-voltage arc (arc discharge) to occur between the heating wire and the metal shield, and the heating wire and the metal shield become short. Then, the resistance value of the heating wire changes rapidly, causing a fire due to rapid overheating of the heating wire. There was a problem.

Therefore, a short detection circuit capable of detecting whether a short occurs between the heating wire and the shield must be provided, and as the thickness of the entire heating wire becomes very thick, there is a problem in that the manufacturing cost increases.

An object of the present invention devised to solve the problems of the prior art as described above, by connecting one side of the lead wire and one side of the thin film with a connecting lead wire and grounding it, lowering the voltage difference between the lead wire and the thin film, withstand voltage It is to provide an electromagnetic shielding heating wire which can reduce the occurrence of arc and prevent the rapid overheating of the linear heating conductor in the short.

In addition, another object of the present invention is to roll the lead wire rolled to the first coating or the third coating so that the cross section is formed flat and flat, to block electromagnetic waves, increase the contact cross-sectional area of the lead wire and the coating, This increases the sensitivity of the sensor by increasing the NTC contact rate, the detection of the temperature change of the NTC thermistor is to provide a more accurate electromagnetic shielding heating wire.

In addition, another object of the present invention is to provide an electromagnetic wave shielding heating wire that increases the cross-sectional area between the lead wire and the coating, increases the adhesion between the lead wire and the coating to improve flexibility and flexibility.

In addition, another object of the present invention is to provide an electromagnetic wave shielding heating wire capable of completely shielding a leakage electric field by winding a thin thin film which does not conduct electricity to the back side outside the first coating or the third coating.

In addition, another object of the present invention, by manufacturing a conventional lead wire by a rolling method without additional configuration, compared to the conventional metal braiding or weaving method, the process is simpler and can increase the manufacturing speed more To provide a heating wire for electromagnetic shielding.

The electromagnetic shielding heating wire of the present invention for achieving the above object is a heating wire, a first sheath surrounding the heating wire, a lead wire wound around the outer circumferential surface of the first sheath and one end of the heating wire, and the lead wire And a second coating covering the thin film, a thin film layer covering the outer surface of the second coating, a third coating covering the outer surface of the thin film layer, and a connecting lead wire electrically connecting the other end of the lead wire to the thin film layer. And the other end of the lead wire and one end of the thin film layer are electrically connected and the other end is not connected, one end of the thin film layer is grounded and the other end is not grounded at the time of power supply, so as to one end of the heating wire. It is characterized in that only power is supplied.

In addition, the heating wire is rolled to be formed flat and flat in cross section, characterized in that it has an effective bonding plane.

The lead wire may be rolled to form a flat and flat cross section and have an effective bonding plane.

The lead wire may be a non-heating low resistance lead wire having non-heating and low resistance characteristics.

In addition, the lead wire is characterized in that it is wound in a spiral spaced apart at regular intervals on the outer peripheral surface of the first coating.

The lead wire may be wound around the outer circumferential surface of the first coating so as to cross each other repeatedly in a double spiral.

In addition, the lead wire is characterized in that the two strands or three strands are formed in a pair and wound around the outer circumferential surface of the first coating or the third coating.

In addition, the electromagnetic wave shielding heating wire according to the present invention, the other side of the lead wire, characterized in that the lead wire and the thin film layer is not connected by the lead wire for connection.

The first coating or the second coating is an NTC thermistor layer using an NTC thermistor.

The low resistance lead wire has a resistance value characteristic lower than that of the heating wire.

The resistance value characteristic of the low resistance lead wire has a resistance value characteristic that is 50% lower than the resistance value characteristic of the heating wire.

According to the present invention, by connecting one side of the lead wire and one side of the thin film with a connecting lead wire and grounding it, the voltage difference between the lead wire and the thin film is reduced, reducing the occurrence of breakdown voltage arc, and the rapid overheating of the linear conductive wire at the time of short. It is not necessary to provide a short detection circuit between the lead wire and the thin film, and because the thickness of the heating wire can be made very thin, this can provide an electromagnetic shielding heating wire with the advantage of reducing the cost. have.

In addition, according to the present invention, even if a complicated configuration is not added at a high cost, the lead wire connected to the heating wire is rolled to form a flat and flat effective bonding plane, and when such lead wire is spirally wound on the coating, The contact cross-sectional area is increased to maintain the adhesion to the coating, thereby providing an electromagnetic shielding heating wire that can more accurately detect the change according to the temperature change of the NTC thermistor.

In addition, according to the present invention, the electromagnetic wave shielding heating wire to block the leakage electric field to increase the blocking efficiency without using expensive braided metal or woven copper foil metal, and to maintain flexibility while making it more suitable for the use of bedding. Can be provided.

In addition, according to the present invention, the lead wire is produced by the rolling process by the rolling method, the production speed can proceed several tens to several hundred times faster than the winding process of the tape-type copper foil, silver foil according to the conventional metal braiding method, weaving method. Thus, it is possible to provide an electromagnetic shielding heating wire that maximizes productivity and reduces labor costs.

In addition, according to the present invention, it is possible to provide an electromagnetic wave shielding heating line that can completely remove the electric charges charged on the outer surface of the heating wire using a thin film.

1 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a first embodiment of the present invention,
2 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a second embodiment of the present invention,
3 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a third embodiment of the present invention,
4 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a fourth embodiment of the present invention,
5 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a fifth embodiment of the present invention,
6 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a sixth embodiment of the present invention,
7 is a view conceptually showing the electromagnetic wave blocking function of the electromagnetic wave blocking heating line according to the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

Of course, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description may be omitted.

1 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a first embodiment of the present invention.

Referring to FIG. 1, the electromagnetic wave shielding heating wire 100 according to the first embodiment of the present invention has a double conductor coaxial structure.

In detail, the linear heat conduction conductor 101 which is a heating wire is arrange | positioned at the center of the heating line 100, and the outer side is coat | covered with the 1st sheath 102. The power supply unit 120 is connected to one side of the linear heat conducting wire 101, and the power supply unit 130 supplying current to the linear heat conducting wire 101 is disposed on one side of the power supply unit 120. The power supply unit 120 serves to supply the heating current supplied from the power supply unit 130 to the linear electrothermal conductive wire 101 according to the temperature of the heating line 100.

The lead wire 103 is spirally wound around the outer circumference of the first sheath 102, and the thin film 104 is wound around the outer side of the first sheath 102, and one side of the lead wire 103 is connected to one side of the thin film 104. The electrical connection is performed by the lead wire 111, and the other side of the lead wire 103 and the other side of the thin film 104 are not connected.

That is, the other end of the lead wire 103 and one end of the thin film layer 104 is electrically connected, and the other end is not connected, one end of the thin film layer 104 is grounded and the other end is grounded when power is supplied. Power is supplied only to one end of the heating wire.

In the lead wire 103, a rectifier 140 is disposed between the lead wire 103 and the linear heat conducting conductor 101, and the current inputted to the center heat conducting conductor 101 is again at the end of the lead wire 103. Since it is output in the opposite direction through, the magnetic field generated by the current flowing in the conductive wire 101 and the lead wire 103 in the opposite direction is canceled.

In other words, when one side of the lead wire 103 and one side of the thin film 104 are connected to the connecting lead wire 111 and grounded, the voltage difference between the lead wire 103 and the thin film 104 may be lowered. Therefore, it is not necessary to thicken the thickness of the 1st sheath 102 coat | covered on the outer side of the electrothermal conductor wire 101, and the 3rd sheath 105 coat | covered on the outer side of the metal thin plate 1041.

In addition, since the voltage difference between the lead wire 103 and the thin film 104 is insignificant, withstand voltage arc (arc discharge) does not occur between the lead wire 103 and the thin film 104, and the lead wire 103 and the thin film ( 104 may prevent sudden overheating because the influence of the resistance value of the linear conductive wire 101 at short time is within an error range or very small. In addition, it is not necessary to provide a short detection circuit between the lead wire 4 and the thin film 104, and because the thickness of the heating wire 100 can be made very thin, thereby reducing the cost.

In addition, the lead wire 103 is preferably a non-heating low-resistance lead wire having a non-heating and low resistance characteristics, the non-heating refers to a feature that does not generate heat, low resistance means that the resistance value is low. do. In other words, the lead wire uses a lead wire having a characteristic of low current resistance but no heat generation.

This lead wire 103 has a resistance value characteristic that is 1/2 lower than the resistance of the linear conductive wire 101 which is a heating wire.

The third coating 105 is coated on the outermost side of the thin film 104. Although not shown, a temperature controller for controlling a current supplied to the conductive wire 101 should be provided.

In addition, the rectifier 140 may be provided, and the temperature control function may be performed through a property in which a resistance value is changed according to the exothermic temperature.

On the other hand, the third sheath 105 wraps around the first sheath 102 and the lead wire 103, the lead wire 103 is wound around the outer circumferential surface of the first sheath 102 at regular intervals, the lead wire 103 ), The cross section is rolled so that the effective bonding plane (D) is formed flat and flat. That is, the lead wire 103 in which the flat and flat effective adhesion plane D was formed through the rolling method is wound spirally on the outer peripheral surface of the first coating 102.

It is preferable that the lead wire 103 be wound in two pairs in the outer circumferential surface of the first coating 102. Then, the resistance value of the lead wire 103 can be reduced.

In addition, the conductive wires 101 and the lead wires 103 are connected to each other so that currents flowing through the conductive wires 101 and the lead wires 103 flow in opposite directions.

In the electromagnetic wave shielding heating wire 100 according to the first embodiment of the present invention, heat is generated by the power input to the conductive wire 101, and at this time, the current flows between the conductive wire 101 and the lead wire 103. The directions are reversed, so the induced magnetic fields cancel each other out. And primarily shields the electric charge that is charged to the first sheath 102 of the lead wire 103, but in the case of an electric field that is charged and leaks between them, it is shielded by the thin metal film 1041 of the thin film 104. do.

Since the thin metal plate 1041 is not in direct contact with the lead wire 103 due to the second sheath 109, it must be grounded separately. As described above, the heating current is inputted to the electrothermal conductive wire 101 and is turned u-turn, and then exits through the lead wire 103. The lead wire 103 and the thin metal plate 104 may be connected to the connection lead wire 111 and grounded separately to discharge all of the charged electric charges.

That is, in order to keep the electric field potential between the ground and the heating wire surface as low as possible, this method should prevent the electric field from leaking. For this purpose, in the case of winding the lead wire (heating wire), a braided shield metal and a weaving method are used. Copper foil metal etc. of the (tape form) were used. Among them, the braided shield metal has a high electric field shielding efficiency, but the cost of raw materials is high, the fabrication efficiency of the braided metal itself is low, and when wound, the braided metal becomes rugged, which leads to a thick lead wire (heating wire), resulting in poor adhesion to the coating. The copper foil and silver foil metal of the weaving method (tape form) have high electric field blocking efficiency but high raw material cost burden, and because of the small cross-sectional area (c) contacting the coated surface, the adhesive strength is reduced, which may cause the electric field to leak. There was a problem that the flexibility, flexibility is not suitable for bedding.

Therefore, the present invention does not add a complicated structure at a high cost separately, and when the lead wire 103 is spirally wound on the outer circumferential surface of the first sheath 102, the lead wire 103 ) Is flat and flat in cross section to have an effective adhesion plane (D), so that the cross-sectional area of contact is increased to maintain adhesion with the first sheath 102, and NTC contact is proportional to the secondary conductor contact cross-sectional area. The sensor sensitivity can be increased by increasing the rate.

In addition, it does not use expensive metal braided metal or woven copper foil to block the leakage electric field to increase the blocking efficiency, while maintaining the flexibility has the effect of more suitable for the use of bedding. Since the lead wire 103 is a flux process by a rolling method, the fabrication speed is several tens to several hundred times faster than the winding process of the conventional metal braiding method, the tape type copper foil and silver foil according to the weaving method, thereby maximizing productivity. It works.

2 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a second embodiment of the present invention.

Referring to FIG. 2, the second embodiment of the present invention is the same as the first embodiment, but the first lead is wound around the outer circumferential surface of the first sheath 102 by making three sets of the lead wires 103. The resistance of the line 103 is reduced.

And it is provided with a rectifier (D1), it is a configuration that can perform a temperature control function through the property that the resistance value changes in accordance with the exothermic temperature.

The configuration using the rectifier (D1) is a heating wire 100 for use in high-grade bedding, such as a temperature control function. Of course, regardless of this configuration, the function of shielding the leakage electric field of the thin film 104 is equally achieved.

3 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a third embodiment of the present invention.

Referring to FIG. 3, the third embodiment of the present invention is the same as the first and second embodiments, except that the winding method of the lead wire 103 wound on the first coating 102 is different.

That is, the electromagnetic wave shielding heating wire 100 of the third embodiment is wound such that the lead wire 103 is repeatedly crossed with each other in a double spiral at regular intervals on the outer circumferential surface of the first coating 102. Then, the heating wire 100 of the present invention can be improved in flexibility and can be made flexible.

4 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a fourth embodiment of the present invention.

Referring to FIG. 4, the fourth embodiment of the present invention is the same as the first embodiment, but uses a ventricle 106 made of polyester thread or glass wool instead of the heat conducting conductor 101, and the ventricle 106 is used. ), The conductive wire 101 is spirally wound, and similarly to the first embodiment, the conductive wire 101 and the lead wire 103 are connected by the rectifier D1.

In the case of using the ventricle 106, in the case of the heating wire 100, the stretchability is improved and flexible.

Of course, the fourth embodiment also connects one side of the lead wire 103 and one side of the thin film 104 with a connecting lead wire 111 and grounds it, thereby connecting the lead wire 103 with the thin film 104. The voltage difference is lowered, thereby preventing the withstand voltage arc (arc discharge) from occurring between the lead wire 103 and the thin film 104, thereby preventing sudden overheating of the linear conductive wire 101 during short circuit. Therefore, it is not necessary to provide a short detection circuit between the lead wire 4 and the thin film 104, and the thickness of the heating wire 100 can be made very thin, thereby reducing the cost is equally effective Is achieved.

5 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a fifth embodiment of the present invention.

Referring to FIG. 5, the fifth embodiment of the present invention is the same as the second embodiment, except that the ventr 106 made of polyester thread or glass wool is used instead of the conductive wire 101. .

6 is a view showing the electromagnetic wave shielding heating wire and its connection configuration according to a sixth embodiment of the present invention.

Referring to FIG. 6, the sixth embodiment of the present invention is the same as the third embodiment, except that the ventr 106 made of polyester thread or glass wool is used instead of the conductive wire 101. In the same manner as in the third embodiment, when the lead wire 103 is wound on the outer circumferential surface of the first sheath 102 at a predetermined interval so as to cross each other repeatedly in a double spiral, the heating wire 100 of the present invention improves the stretchability, I can do it flexibly.

7 is a view conceptually showing the electromagnetic wave blocking function of the electromagnetic wave blocking heating line according to the present invention.

Referring to FIG. 7, (a) cuts off an electric field in a state in which the thin metal plate 1041 of the thin film 104 faces inward, and uses a straight conductive wire 101. In this case, since one side of the lead wire 103 and one side of the thin film 104 are grounded by the connecting lead wire 111, the voltage difference between the lead wire 103 and the thin film 104 is lowered, thereby The withstand voltage arc (arc discharge) may not be generated between the lead wire 103 and the thin film 104, and the thin metal plate 1041 discharges all of the electric charges charged to the ground to the ground point. No charge is charged on the outer surface. Therefore, the user is not affected by the leakage electric field of the heating wire 100.

In addition, (b) is a configuration in which a ventricle 106 made of polyester thread or glass wool is used instead of the heat conducting wire 101, and achieves the same effect as when the straight heat conducting wire 101 is used.

The present invention is not limited to the above-described preferred embodiment and can be easily modified by anyone of ordinary skill in the art without departing from the gist of the present invention claimed in the claims, Such changes are intended to fall within the scope of the claims.

100: electromagnetic wave shielding heating wire
101: electrically conductive wire 102: first coating
103: lead wire 104: thin film
109: second coat 106: ventricle
105: third covering 111: connecting lead wire
120: power supply unit 130: power supply unit
140: rectifier

Claims (11)

Heating wire;
A first sheath surrounding the heating wire;
A lead wire wound on an outer circumferential surface of the first sheath and having one end connected to one end of the heating wire;
A second sheath surrounding the lead wire;
A thin film layer surrounding the second outer surface of the coating;
A third coating surrounding an outer surface of the thin film layer; And
A connecting lead wire electrically connecting the other end of the lead wire to the thin film layer; Including,
When the other end of the lead wire and one end of the thin film layer are electrically connected and the other end is not connected, one end of the thin film layer is grounded and the other end is not grounded when power is supplied, so that only one end of the heating wire Is supplied,
The lead wire,
An electromagnetic wave shielding heating wire, which is rolled and formed to have a flat and flat cross section and has an effective bonding plane.
The method of claim 1, wherein the heating wire,
An electromagnetic wave shielding heating wire, which is rolled and formed to have a flat and flat cross section and has an effective bonding plane.
delete The method of claim 1, wherein the lead wire,
An electromagnetic shielding heating wire, characterized by using a non-heating low resistance lead wire having non-heating and low resistance characteristics.
The method of claim 1, wherein the lead wire,
The electromagnetic wave shielding heating line, which is spaced apart at a predetermined interval from the outer circumferential surface of the first sheath and spirally wound.
The method of claim 1, wherein the lead wire,
The electromagnetic wave shielding heating line is wound on the outer circumferential surface of the first coating so as to cross each other repeatedly in a double spiral at regular intervals.
The method of claim 1, wherein the lead wire,
An electromagnetic wave shielding heating wire comprising two or three strands wound in a circumferential surface of a first sheath or a third sheath.
The method of claim 1,
The other side of the lead wire, the electromagnetic wave shielding heating line, characterized in that the lead wire and the thin film layer is not connected by the connecting lead wire.
The method of claim 1, wherein the first coating or the second coating,
An electromagnetic shielding heating wire, characterized by an NTC thermistor layer using an NTC thermistor.
The method of claim 4, wherein
The low resistance lead wire has a resistance value characteristic lower than that of the heating wire.
The method of claim 10,
The resistance value characteristic of the low resistance lead wire has a resistance value characteristic that is 50% lower than the resistance value characteristic of the heating wire.

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