JP2002260824A - Flexible flat heating element with surface control - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flexible flat heating element with surface control having a nonhazardous ignition preventing function. SOLUTION: The flexible flat heating element comprises a flexible carbon-based electric resistor layer, a flexible nonhazardous soft resin layer with low melting point, covering one surface of the flexible carbon-based electric resistor layer, an incombustible electric conductor covering the nonhazardous soft resin layer with low melting point, and a heat resistant resin and a heat resistant colored resin covering the surface of the layer which is not covered by the incombustible electric conductor out of the surface of the incombustible electric conductor and the nonhazardous soft resin layer with low melting point. Two nonhazardous soft resin layers with low melting point do not melt at the ordinary heating temperature of the electric resistor layer and the incombustible electric conductor generated when electricity is conducted to the carbon-based electric resistor layer. When an abnormal heating temperature, which is higher than the ordinary heating temperature and causes a variation of an initially set resistance of the electric resistor layer, is generated at the carbon- based electric resistor layer, an electrical short circuit, caused by the fusion of two nonhazardous soft resin layers with low melting point generated between the opposing surface of the elastic carbon-based electric resistor layer and the incombustible electric conductor, is formed at the location where the abnormal heating temperature is generated, thus, the nonhazardous ignition preventing function is constructed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible surface heating element, and more particularly to a flexible surface control surface heating element having a function of controlling the temperature of the heating element to a safe temperature or lower.

[0002]

2. Description of the Related Art Conventionally, a flexible carbon heating element having a vinyl chloride jacket has been known. This type of heating element is used, for example, for keeping warm bedding and melting snow on a roof. In addition, bedding in which nichrome wires are wired in an S-shape, floor heating panels in which nichrome wires are incorporated, and the like are also used in various fields. Further, a heating element which uses a metal foil printed as a heat source is also used.

[0003] Heating elements of metal construction have problems such as high energy consumption and safety and durability are not guaranteed. Heating elements in which a film plate is formed of silicon resin containing carbon particles are known, but this type of heating element has a disadvantage that the distribution of carbon particles and the control of the generated temperature through a temperature control device are not uniform. In addition, it is difficult to keep the in-plane temperature of the planar heating element uniform. In addition, a heat generating weft obtained by mixing carbon particles and a rubber resin with a synthetic resin-based weft, applying a carbon liquid thereto, and drying, and a sheet-shaped heating element in which a synthetic resin warp is woven and coated with a vinyl chloride skin. Are known. However, in the case of a heating yarn using a synthetic resin system, since a carbon liquid adheres in a film form around the yarn, a sheet heating element using a heating yarn coated with a mixture of such carbon particles and a resin is used. May be damaged when bent, subjected to force or load.

[0004] None of the conventional sheet heating elements described above has a function of preventing a local abnormal temperature rise on the sheet heating element. (Hereinafter simply referred to as "short-circuit"), causing burns to the user and possibly causing a fire.

As a means for preventing such an accident from occurring, the present inventor has proposed a surface-controlled heating element according to US Pat. No. 5,679,277. The feature of the surface control heating element according to this proposal (1) is that when the carbon sheet resistor deteriorates at an abnormal temperature even in a local area and short-circuits, the vinyl chloride sheets on the front and back surfaces of the resistor carbonize, and one side of the vinyl chloride sheet The thin metal wire provided is a refractory heating element that detects leakage current and shuts off the power. Further, as a proposal (2), Japanese Patent Application Laid-Open No. 9-28326 also discloses that an auxiliary vinyl chloride film is provided on one side of a surface heating element having a vinyl chloride sheet adhered to the front and back surfaces of a carbon sheet resistor. We have proposed a controlled heating element that integrates a vinyl chloride film coated with a carbon liquid on a vinyl chloride film by a configuration in which the surface conductors are in contact. However, subsequent research tests have revealed that the planar heating elements according to the above proposals (1) and (2) have the following defects.

[0006]

That is, the proposal (1)
The sheet resistor according to (2) is obtained by impregnating a cloth in which electrode bands are woven together with a woven cloth on both side edges of a cotton woven cloth with a carbon liquid obtained by mixing a urethane-based or rubber-based coagulant and carbon powder with a solvent. It is a dry resistor. This has the following defects: The temperature at which this type of resistor changes its resistance is 80 ° C to 11 ° C.
The temperature is within 0 ° C., and when the temperature becomes 120 ° C. or more, carbonization occurs with deterioration and short-circuit occurs immediately. The melting point of vinyl chloride used as the outer skin is 16
If the carbon resistor is short-circuited extensively and used for bedding, etc., at 0 ° C and before the vinyl chloride sheet carbonizes and the good conductor senses the leakage current, discoloration or scorching of cotton may occur. is there. US Patent No. 5.679.277
No. describes that the vinyl chloride heat insulating sheet has a melting point below the ignition point, for example, 100 ° C. to 150 ° C., but there is a problem in the melting point. There are harmful plasticizers in the vinyl chloride sheet,
At a temperature of 50 ° C., the plasticizer diverges, the electrical insulation is degraded, and cracks may occur if heat is generated in a bent state for a long time. The heating element of the vinyl chloride shell is non-combustible garbage, and when burned, generates harmful dioxins.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a flexible surface control surface heating element having a harmless ignition prevention function without the drawbacks of the conventional sheet heating element. Another object of the present invention is to provide a harmless flexible surface control surface heating element which has flexibility and a uniform heat distribution, is safe, and which completely burns at high heat. A further object of the present invention is a heating element which does not change its resistance even when laid under heavy furniture such as a table or a piano, and can be applied to a heating element for a house or a bedding with security. An object of the present invention is to provide a surface heating element.

[0008]

SUMMARY OF THE INVENTION A flexible surface control surface heating element according to the present invention has a flexible electric resistor layer and one surface of the flexible electric resistor layer. A low-melting-point soft resin layer, a non-combustible electric good conductor adhered on the low-melting-point soft resin layer, a surface of the non-combustible electric good conductor, and the non-combustible electric good conductor of the low-melting-point soft resin layer A heat-resistant resin layer adhered to the surface of the layer on which the electric resistance layer and the non-flammable electric good conductor are normal when the electric resistance layer is energized. At the heat generation temperature, the low melting point soft resin layer does not melt, and when an abnormal heat generation temperature is generated in the electric resistance layer that causes a change in the initial resistance of the electric resistance layer higher than the normal normal heat generation temperature, the abnormal heat generation occurs. At the position where the heat generation temperature occurs, the electric resistance layer and the non-combustible electric It is configured to body facing surfaces between electrical short circuit due to melting of the low melting point soft resin layer on the is formed.

Further, the flexible surface control surface heating element according to the present invention comprises a flexible electric resistor layer and two flexible electric resistor layers respectively attached to both surfaces of the flexible electric resistor layer. A low-melting soft resin layer, two non-combustible electric good conductors respectively adhered on the two low-melting soft resin layers, and a heat-resistant resin layer adhered to the surface of the non-combustible electric good conductor At a normal normal heat generation temperature of the electric resistor layer and the non-flammable electric conductor when the electric resistor layer is energized, the low melting point soft resin layer does not melt, and the electric resistor layer has the normal When an abnormal heating temperature that causes a change in the initial resistance of the electric resistor layer higher than the normal heating temperature occurs, at least one of the two non-combustible electrical good conductors and the electrical resistance at a position where the abnormal heating temperature occurs. Between the surface facing the body layer and the low melting point soft And it is configured to electrically short-circuit is formed due to melting of the resin layer.

[0010] The electric resistor layer and the non-combustible electric good conductor may be configured so that only edges are adhered or pressed to have flexibility. The abnormal heat generation temperature is:
It can be configured to be in the range of (80-110) ° C. The non-combustible electric good conductor is made of a non-combustible paper formed by mixing aluminum hydroxide or magnesium silicate with pulp, and on a surface of a non-combustible paper, a good conductive ink mixed with carbon particles, a heat-resistant resin, and a solvent is added and dried. It can be configured to be a good conductor. The incombustible electric good conductor (1)
2) can be configured to be a metal film conductor in which a metal film is applied to a heat-resistant resin film such as a PET resin film.

Further, a heating current supply terminal for applying a heating current to the electric resistor layer, and the electric short circuit disposed to be connected to the electric resistor layer and the non-combustible electric conductor, respectively, are provided. A detection terminal provided for detecting a circuit, and a control power supply circuit that controls to cut off the heating current to the heating current supply terminal when the electric short circuit is detected at the detection terminal. It can be provided with a configuration.

[0012]

Principles of the Invention In order to explain the embodiments of the present invention, an outline including the principles of the present invention will be described. As the surface heating element according to the present invention, a resistance solution in which carbon particles and a rubber or a polyurethane resin are mixed with a deoxyolene solvent is impregnated into a cloth in which electrode bands are woven on both side edges of a 100% cotton twill fabric. A heat-generating layer in which a harmless soft low-melting resin that melts within 80 ° C to 110 ° C is laminated in a vacuum state on the front and back surfaces of the surface resistor, and a heat-resistant, insulating and waterproof coloring is applied to the lower surface It is made by bonding resin. Furthermore,
As a good conductor (control body) for fire resistance and leakage current sensing, a good conductive ink containing carbon particles and PET resin mixed with a solvent on one side of non-combustible paper mixed with inorganic aluminum hydroxide or magnesium silicate non-combustible agent in pulp. A printed non-combustible paper good conductor or a non-combustible conductor provided with an aluminum foil PET film or a good conductive material is used. The non-combustible paper good conductor is configured so that the leakage current sensing terminal makes good contact with a part of the good conducting surface,
As waterproof protection of non-combustible paper, a harmless soft low melting point resin such as ethylene methacrylic acid copolymer resin is laminated and provided. On the upper surface of non-combustible paper of good conductor of non-combustible paper, heat resistant waterproof colored resin is laminated and provided, A paper conductor is formed.

As a configuration having flexibility, the heating element surface and the control body are adhered to each other by a configuration in which a leakage current sensing terminal can be contacted, and only edges of the heating element surface and the control body surface are bonded or thermocompressed to be integrated. A flexible non-combustible control heating element. The electrical cutoff configuration is abnormal heat when the initial resistance of the resistor changes, that is, when the harmless soft low-melting resin melts even locally at a temperature within 80 ° C to 110 ° C and the resistor and the non-combustible paper good conductor come into contact, The leakage current is instantaneously conducted to the entire surface of the non-combustible paper conductor, and the leakage current flows to the leakage current sensing terminal provided in the terminal power supply unit and the power supply cord connected to the terminal. A switch disposed in the supply path is opened to provide the safest fireproof non-combustible control heating element that cuts off the supply of the heating current to the heating element.

According to another embodiment of the present invention, the configuration of the electrode terminal to be attached to the electrode band of the heating resistor is such that one rectangular flat plate is bent at a central portion serving as a cord wire insertion hole, and one flat plate is a good conductive plate. The other flat plate is an insulating plate on which an insulating film including a protrusion is applied. The insulating protrusion has an electrode terminal structure that penetrates the good conductor of non-combustible paper, passes through a protrusion insertion hole provided in the surface of the good conductive plate, and bends and fixes the tip of the protrusion.

According to another embodiment of the present invention, a rectangular flat plate is bent at a central portion serving as an axis of a cord wire insertion hole, and each of the two flat plate portions is provided with two stapler-type compression terminal insertion holes. The flat plate surface has a leakage current sensing terminal structure in which it is brought into good contact with a good conductor surface of non-combustible paper, another flat plate surface is brought into contact with the upper colored resin surface, and is fixed with a stapler type compression terminal.

According to another embodiment of the present invention, when the carbon-based heating resistor reaches an abnormal temperature that causes a change in the initial resistance during energization, that is, an abnormal temperature within the range of 80 ° C. to 110 ° C., When the harmless soft resin having a low melting point that has been vaporized dissolves to the extent of a needle hole even at a local portion of the resin surface and comes into contact with the non-combustible paper good conductor surface on one side of the heating resistor, the leakage current of the heating resistor flows over the entire non-combustible paper good conductor. This leakage current is received by the leakage current sensing terminal, which is in good contact with one end of the non-combustible paper good conductor surface, through the terminal of the relay coil, and the latching relay is opened to cut off the supply of electricity to the heating element. As described above, the fire-resistant non-combustible surface control heating element is used as a complete safety device, including a fire accident during processing of an electrode strip terminal or a lead wire.

[0017]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a partially exposed perspective view showing a first embodiment of a flexible non-combustible surface control surface heating element 1. One side of a heating resistor layer 2 is made of a soft material having a low melting point such as an ethylene metal acid copolymer resin. A resin layer 4 is applied. A good conductor 3 such as a non-combustible paper good conductor is provided on the upper surface of the heating resistor 2. Electrode strips 9 and 9 and heating power terminals 10 and 10 are provided on both side edges of the heating resistor 2, and the heating power terminals 10 and 10 are heating current supply terminals which are the first terminals of the power controller 6. It is connected to the. The good conductor layer 3 is printed on one side of the good conductor 12 of non-combustible paper, and the leakage current sensing terminal 11 and the heating power supply terminal 10 squeezed into contact with the good conductor layer 3 are connected to the sensing terminal which is the second terminal of the power supply controller 6. It is connected. The configuration and operation of the low-melting soft resins 4 and 4 for dissolving the leakage current to the good conductor layer 3 and shutting off the power supply will be described later.

A flexible non-combustible surface control surface heating element 1 according to the present invention.
When the heating resistor layer 2 reaches an abnormal temperature at which an initial resistance change occurs using a flexible and harmless material, the soft resin layer 4 dissolves, and the good conductor layer 3 on the upper surface and the non-combustible paper are used. The leakage current flowing when the good conductor layer 12 and the heating resistor layer 2 are in contact with each other flows over the entire surface of the good conductor layer 3 and flows into the leakage current sensing terminal 11 provided on the edge and the power supply cord 7 connected to the terminal 10. . The non-combustible paper good conductor 12 is mixed with an inorganic non-combustible agent such as aluminum hydroxide or magnesium silicate, and is a refractory material that does not spread even in a cigarette fire.

The heating resistor 2 having flexibility and heat conversion efficiency has a twill weave made of 100% cotton yarn, and ten electrode wires 8 in which a plurality of thin metal wires are twisted to form an electrode band 9. The heating resistor 2 is formed by impregnating and drying a cloth having a band 9 on both sides with a carbon-containing liquid of a polyurethane-based coagulant and graphite powder. Such a heating resistor 2 is
Even locally, the initial resistance changes at an abnormal temperature within 80 ° C to 110 ° C.

The structure of the control body used in the present invention is as follows:
A good conductor 3 is provided on one surface of the noncombustible paper 12 by printing a good conductive ink obtained by mixing carbon particles and PET resin with a solvent. Further, the noncombustible paper 12 has fire resistance such that it does not spread even at 460 ° C. of cigarette fire.

FIG. 2 is a cross-sectional view showing a first configuration example of the flexible surface control surface heating element 1 according to the present invention, and has a low melting point provided on the surface of the heating resistor 2 because of its flexibility. Heating resistor 2 composed of heat-resistant colored resin 5 on the lower surface of soft resin layer 4
And the good conductor 3 on the upper surface of the soft resin layer 4 and the good conductor 12 of non-combustible paper.
Further, the surface of the fire-resistant and non-combustible control body, the upper surface of which is provided with the heat-resistant colored resin 5, is adhered or thermocompression-bonded only at the edges to form the flexible fire-resistant and non-combustible surface control heating element 1.

FIG. 3 is a cross-sectional view showing a second example of the structure of the flexible surface control surface heating element 1 according to the present invention. Heating resistor 2 composed of heat-resistant colored resin 5 on the lower surface of low soft resin layer 4
And the good conductor 3 on the upper surface of the soft resin layer 4 and the good conductor 12 of non-combustible paper.
Further, the surface of the fire-resistant and non-combustible control body, the upper surface of which is provided with the heat-resistant colored resin 5, is adhered or thermocompression-bonded only at the edges to form the flexible fire-resistant and non-combustible surface control heating element 1. That is, an electric resistor layer (2) having flexibility, two low melting point soft resin layers (4, 4) respectively attached to both surfaces of the electric resistor layer having flexibility, Low melting point soft resin layers (4,
4) two non-combustible electric good conductors respectively adhered on the upper surface, and a heat-resistant resin layer (5) applied on the surface of the non-combustible electric good conductor; At a normal normal heat generation temperature of the electric resistor layer (2) and the nonflammable electric conductor (12) when the body layer (2) is energized, the low melting point soft resin layer (4, 4) does not melt. When an abnormal heating temperature at which the initial resistance of the electrical resistor layer is higher than the normal normal heating temperature occurs in the electric resistor layer (2), the electric current is generated at the position where the abnormal heating temperature occurs. Resistor layer (2) and the non-combustible electric good conductor (1
An electric short circuit is formed between the opposing surfaces of at least one of 2) and the electric resistor layer (2) by melting the low melting point soft resin layer (4, 4).

FIG. 4 is a side view (A) showing the structure of the terminals 10, 10 fixed to the ends of the electrode strips 9, 9, and a plan view (B) showing the open state. The terminal structure is provided with two flat plate portions a and b by bending a rectangular flat plate with a cord wire insertion hole shaft 13 for soldering the power cord 7, and the flat plate a is provided with a projection g. The entire surface of the flat plate a is coated with the insulating paint c to form an insulating plate, and the flat portions a and b are passed through the good conductor 3 at the end of the heating resistor layer 2 as shown in FIG. The half-surface flat plate b is a good conductive plate, has an insertion hole d, and is brought into contact with the lower electrode band 9 of the resistor 2. To fix the terminals on both sides, the tip of the insulated terminal protrusion a is inserted into the flat plate hole d of the insertion hole b.
, The tip of the projection is bent and fixed.

FIG. 5 shows a structure of the leakage current sensing terminal 11 which is bent at a central portion serving as a rectangular cord wire insertion hole axis and is made up of two superposed flat plates, and the insertion holes e and e are formed in both flat plate portions.
The one flat plate is brought into good contact with the good conducting surface of the good conductor 3. The other flat plate is brought into contact with the heat-resistant colored resin surface 5 on the upper surface of the non-combustible paper, and is pressed and fixed between the insertion holes e and e with the stapler type terminal f.

FIG. 6 is a sectional view showing an example of a mounting state of the electrode terminal 10 of FIG. 4 and the leakage current sensing terminal 11 of FIG. 5 in the embodiment according to the first embodiment of the present invention. After the terminal 11 is squeezed, the heat-resistant colored resin 5 on the upper surface of the noncombustible paper 12, the resistance heating element 2, and the soft resin 4 are thermocompression-bonded to form the fire-resistant non-combustible surface control heating element 1.

FIG. 7 shows an example of a circuit configuration of a power supply controller used in the present invention.
The N / OFF contact 14 is connected to one of the AC inputs of the reference voltage generator 29 and the latching relay 27. The output of the latching relay 27a is connected to the terminal 1 of the heating resistor 2.
0 and the leakage current sensing terminal 11. AC power supply 1
The third second terminal 13 b is connected to the other of the AC inputs of the reference voltage circuit 29 and the temperature adjustment circuit 20.

The reference voltage generation circuit 29 includes a rectifier 15 and a voltage regulator 30. Reference voltage generation circuit 2
9 is a rectifier circuit 25 with a time constant having a slight time constant from the AC input to the transmission of the DC output.
Used for input of. The output of the leakage current sensing terminal 11 of the non-combustible paper good conductor 12 is connected to a second input of a rectifier circuit 25 with a time constant.

The soft resin 4 between the heating resistor 2 and the non-combustible paper good conductor 3 has such a high resistance value that a leakage current is prevented at a normal temperature of 80 ° C. or less.

The rectifier circuit 25 with a time constant has one of its inputs, the adjusted reference voltage 2 from the reference voltage generator 29.
A rectifier 16 receiving 9a, and yet other inputs include the output of terminal 11 from good conductor 12 of non-combustible paper. The rectified output of the rectifier 16 is connected in parallel to a relay coil 26 and a capacitor 17 having a capacity corresponding to a required time constant.

The temperature control circuit 20 includes a control switch 23, and receives an output 13b of the power supply 13 at one of the inputs. The output of the controller switch 23 is connected to the latching relay 27b. Latching relay 2
The other terminal of 7b is connected to the second terminal of the heating resistor 2. The rectifier circuit 21 receives an input from a heat-sensitive wire A arranged on the surface of the heat-resistant resin layer 5 to sense the temperature of the surface as shown in FIG. The output of the rectifier circuit 21 is connected to the input of a temperature comparator 22 for comparison with a reference voltage corresponding to a set temperature of 50 ° C., for example. The output of the temperature comparator 22 is used as a control output to a control switch 23.

The holding contacts of the latching relays 27a, 27b are normally "open" due to the non-operation of the relay coil. Under normal operating conditions, the latching relay 27
The contact points a and 27b are "contact". ON / O
When the FF switch 14 is in the “contact” state, the power to the resistor 2 and the heat sensing line A is controlled by the control switch 2
3 is controlled as follows by turning on and off.

The rectifier circuit 21 is sensitive to temperature-dependent changes in voltage and current caused by the temperature sensed by the heat-sensitive wire A in order to supply a temperature-dependent voltage to the temperature comparator 22.

The temperature comparator 22 sends an operation signal to the control switch 23 when the temperature sensed by the non-combustible paper good conductor 12 is lower than the initial set value. This causes the control switch 23 to be "connected", and through the switch 23, the latching relay 27a which is normally "connected",
Power is supplied to the resistor 2 through 27b. Thereby, the resistor 2 is heated. If the sensed temperature exceeds the second set value, the temperature comparator 22 removes the activation signal from the control switch 23 and temporarily stops the heat frequency. If the sensed temperature is again below the initial set point, heat is restored.

If the resistor 2 and the temperature control circuit 20 for maintaining the entire safe temperature of the current interrupting mechanism 24 together with the non-combustible paper good conductor 12 become defective, the heating element 1 is permanently disabled. Become. One of the noted defects includes a defect of the control switch 23 in the ON state. This causes the heat in the resistor 2 to be uncontrollable. If any part of the resistor 2 exceeds the melting temperature of the low-melting soft-soluble resin layer 4, an electrical short circuit occurs between the conductor of the resistor 2 and the non-combustible paper good conductor 12. The leakage current or voltage generated by the non-combustible paper good conductor 12 becomes the output of the rectifier 16 and the input of the rectifier 16 in the rectifier circuit 25 with a time constant.

When current leaks from the good conductor 12 of non-combustible paper,
The rectifier 16 supplies an operation signal to the relay coil 26.
Therefore, the contact of the relay coil 26 is connected to the latching relay 2
7a and 27b release the contacts that are normally in "contact" and bring the holding contacts into "contact". The capacitor 17 maintains the operating voltage of the relay coil 26 for a short time even if the initial operation signal is removed. As a result, the latching relays 27a and 27b are reliably opened, and the power to both ends of the resistor 2 that reliably stops the heat generation is cut off.

The melting point of the soft dissolvable sheet 4 determines the temperature at which the current interrupting mechanism 24 removes power from the resistor 2. Suitable selection of the material is intended for an abnormal temperature at which the resistor 2 does not restore the initial resistance, that is, a melting temperature within 80 ° C to 110 ° C. The resistor 2 is a resistor obtained by impregnating a woven fabric with a carbon-based resistance solution in which flexible carbon particles and a resin are mixed with a solvent and then drying the woven fabric.

The initial resistance of the carbon-based resistor 2 changes locally even at an abnormal temperature of 80 ° C. to 110 ° C. At an abnormal temperature higher than that, it deteriorates, carbonizes, and electrically short-circuits. The present invention is composed of a harmless resin, in which the soft resin on the front and back surfaces of the resistor 2 is melted at a temperature within 80 ° C. to 110 ° C. The latching relays 27a and 27b are opened when the operation signal is received through the terminals of the control coil 16, the comparator 22, and the relay coil 26, and a completely non-flammable flexible surface control surface heating element that opens the power to the resistor 2 is provided. .

[0038]

As described in detail above, the flexible surface control surface heating element according to the present invention can be used for home-related floor heating and bedding, rugs, baths and toilets, snow melting on roofs, and the like. It is suitable for keeping warm and electric potential therapy of medical equipment, hospital beds, geriatric care tools, infant beds and the like. In addition,
Insulation for vessels, drying equipment for seafood and seaweed, oil pipe cylindrical steel, tank insulation, etc. are all applicable to the field of use of flexible surface control surface heating element temperature devices with no electrical ignition accident.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure of a flexible surface control surface heating element according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a first embodiment of a flexible surface control surface heating element according to an embodiment of the present invention.

FIG. 3 is a sectional view showing a second embodiment of a flexible surface control surface heating element according to an embodiment of the present invention.

FIG. 4 is a side view (A) and a plan view (B) showing an electrode band terminal structure used in the present invention.

FIGS. 5A and 5B are a perspective view and a plan view showing a structure of a leakage current sensing terminal diagram used in the present invention.

FIG. 6 is a partial longitudinal sectional view showing a connection structure between a heating element and a power supply according to the present invention.

FIG. 7 is a connection circuit diagram showing a configuration example of an electric control panel used for controlling the power supply current of the fire-resistant non-combustible surface control heating element according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Flexible non-combustible surface control surface heating element 2 Heat generating resistor layer (electrical resistor layer) 3 Good conductor (good non-combustible paper) 4 Low melting point soft resin layer 5 Heat resistant colored resin layer 6 Power controller 7 Power cord line 8 Electrode wire REFERENCE SIGNS LIST 9 electrode strip 10 heating power supply terminal 11 leakage current sensing terminal 12 good conductor (good non-combustible paper conductor) 13 AC power supply 13 a, 13 b AC power supply terminal 14 power switch 15, 16 rectifier 17 capacitor 18 cord insertion hole shaft 20 temperature control circuit 21 rectifier circuit 22 Temperature comparator 23 Control switch 24 Current cutoff mechanism 25 Rectifier circuit with time constant 26 Relay coil 27a, 27b Latching relay 29 Reference voltage generation circuit 30 Voltage regulator A Heat-sensitive wire

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[Procedure amendment]

[Submission date] August 2, 2001 (2001.8.2)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008]

SUMMARY OF THE INVENTION A flexible surface control surface heating element according to the present invention comprises an electrode on a flexible cotton yarn twill fabric.
Mix carbon particles and heat-resistant resin with a solvent
Impregnated with the combined carb liquid and dried
A flexible electric resistor layer, a low-melting harmless soft resin layer adhered on one surface of the flexible electric resistor layer, and a low-melting harmless soft resin on the upper surface thereof. Pal wearing
Mixed with aluminum hydroxide or magnesium silicate
Made of incombustible paper with carbon particles and heat resistant
A non-combustible electric good conductor obtained by adding and drying a good conductive ink obtained by mixing a fat with a solvent, a surface of the non-combustible electric good conductor, and the non-combustible electric material of the low melting point harmless soft resin. On the surface of the layer on which the good conductor is not attached, the attached heat-resistant resin and heat-resistant colored resin are provided, and when the electric resistance layer is energized, the electric resistance layer and the non-flammable electric good conductor wherein in normal normal heating temperature low melting harmlessness soft resin does not dissolve, abnormal heat generation temperature of the initial setting resistor causes a change in higher than the normal normal heating temperature electrical resistor layer wherein the electrical resistance layer occurs Then, at the position where the abnormal heat generation temperature occurs, an electric short circuit is formed between the opposing surfaces of the electric resistor layer and the nonflammable electric conductor by dissolving the low melting point harmless soft resin. Is configured.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

A flexible double-sided control surface heating element according to the present invention comprises:
Electrode strips are provided on both side edges of a flexible cotton yarn twill fabric.
On a woven fabric, apply rubber or polyurethane resin with a solvent.
From a carbon-based resistor impregnated with a mixed carbon liquid and dried
A flexible electric resistor layer, two low-melting harmless soft resins respectively adhered to both surfaces of the flexible electric resistor layer, and the two low-melting points thereon. Harmless <br/> Aluminum hydroxide or silica
One side of noncombustible paper formed by mixing magnesium
Highly conductive ink made by mixing elementary particles, heat resistant resin, and solvent
It is made of non-combustible paper added and dried , and comprises the two non-combustible electric good conductors and a heat-resistant colored resin respectively adhered to the surface of the non-combustible electric good conductor, and energizes the carbon-based electric resistor layer. electric resistance layer and said non-combustible electrical conductor when the, the the usual normal heating temperature low melting harmlessness soft resin layer is not dissolved, than the usual normal heating temperature on the carbon-based electric resistor layer when abnormal heating temperature initial setting resistor causes a change in the high the electrical resistor layer is generated at a position where the abnormal heat generation temperature occurs at least one said carbon-based electric resistor of the two non-flammable electric conductor and it is configured to electrically short-circuit due to the dissolution of the low melting harmlessness soft resin is formed between the faces facing each of the layers.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010] The carbon-based electric resistor layer and the non-combustible electric good conductor may be configured so that only both side edges are adhered or pressed to have flexibility. The aforementioned carbon
The abnormal temperature at which the resistance of the system electric resistance changes varies as described above.
Ideal thermal distribution of antibodies is ideal, but local abnormal temperatures
If a rise occurs, this type of carbon-based electrical resistor
Is immediately carbonized with deterioration above 120 ° C as described above
Abnormal heat generation as a safe side temperature
The temperature range is (80 ° C ~ 110 ° C)
That is, it is defined as the abnormal temperature at which the initial resistance changes . The non-combustible electric good conductor is formed by mixing aluminum hydroxide or magnesium silicate with pulp, and on one side of non-combustible paper, conductive ink mixed with carbon particles, heat-resistant resin, and solvent is added and dried. It can be configured to be a good conductor of non-combustible paper.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

[0012]

Principles of the Invention In order to explain the embodiments of the present invention, an outline including the principles of the present invention will be described. The surface heating element according to the present invention is a carbon-based surface obtained by impregnating and drying a resistance liquid in which carbon particles and a rubber or polyurethane resin are mixed with a solvent on a cloth in which electrode bands are woven on both side edges of a 100% cotton twill fabric. A resistor is prepared, and one side of the carbon-based sheet resistor is placed at 80 ° C.
Ethylene methacrylic acid that melts at temperatures within ~ 110 ° C
And a low melting harmlessness soft resin such as copolymer resins, the carbonaceous
Insulated waterproof colored tree attached to heat-resistant resin on the lower surface of resistor
In a fat, and a surface heating element layer was laminated to a vacuum state, as further refractory and the leakage current sensing conductor (control body), one side of the non-combustible paper mixed with incombustible agent aluminum hydroxide or magnesium silicate mineral to the pulp And a good conductor of non-combustible paper printed with a good conductive ink in which carbon particles and a heat-resistant resin are mixed with a solvent. On the lower surface of the non-combustible paper good conductor, the leakage current sensing terminal is in good contact with a part of the good conductor surface ,
For waterproof protection of non-combustible paper, a low melting point harmless soft resin such as ethylene methacrylic acid copolymer resin is applied and provided. On the upper surface of non-combustible paper of good conductor of non-combustible paper, heat resistant waterproof colored resin is laminated and provided. A good conductor of non-combustible paper is used.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

[0016] By another embodiment of the present invention, the abnormal temperature flexible carbonaceous resistor changes the initial set resistance during energization is within 80 ° C. to 110 ° C., becomes abnormal heat generation temperature in this range A non-flammable soft resin having a low melting point and a non-flammable good conductor adhered to one surface of the heating resistor as a waterproof protection.
The low-melting harmless soft resin that has adhered melts, and the carbon-based resistor surface
The leakage current that flows when the non-combustible paper good conductor surface is in contact with even a local needle hole on one side flows over the entire non-combustible paper good conductor. This leakage current is received by the leakage current sensing terminal, which is brought into good contact with one end of the non-combustible paper conducting surface, through the terminal of the relay coil,
The latching relay opens to shut off the supply of electricity to the heating resistor . The above non-combustible control heating element is
Processing, including poor soldering or lead wire disconnection and ignition
A fire-resistant non-combustible surface control heating element is used as a complete safety device that can detect even mistakes in the system.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

The carbon-based heating resistor 2 having flexibility and heat conversion efficiency has a twill weave made of 100% cotton yarn and ten electrode wires 8 in which a plurality of fine metal wires are twisted to form an electrode band 9. Then, the cloth provided with the electrode band 9 on both sides is impregnated with a carbon-containing liquid of a polyurethane-based coagulant and graphite powder and dried to form the carbon-based heating resistor 2. Such a carbon-based heating resistor 2 also has an 8
At an abnormal temperature of 0 ° C or less, a change in the initial resistance occurs.
80 ° C to 110 ° C
It was proved that the initial setting resistance changed in the range of .
Also , the softening point of polyurethane resin which is easily impregnated into cotton woven fabric is
It is around 100 ° C, and the range of the abnormal heat generation temperature is 80 ° C
At ~ 110 ° C, the aforementioned uniform resistance changes locally
Power supply current is cut off without damaging the resistor.
You .

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] Explanation of sign

[Correction method] Change

[Correction contents]

[Description of Signs] 1 Flexible non-combustible surface control surface heating element 1 ' Flexible non-combustible double-side control surface heating element 2 Carbon-based electric resistor layer ( carbon-based heating resistor) 3 Good conductor (non-combustible paper good conductor) 4 Harmless low Melting point soft resin layer ( harmless low melting point soft resin ) 5 Harmless heat resistant resin layer (harmless heat resistant resin) 6 Power supply controller 7 Power cord 8 Heating current supply terminal (electrode wire) 9 Electrode band 10 Heating power supply terminal (electrode terminal) DESCRIPTION OF SYMBOLS 11 Leakage current sensing terminal 12 Non-flammable electric good conductor (non-combustible paper good conductor) 12 ' Non-combustible electric good conductor 13 AC power supply 13a, 13b AC power supply terminal 14 Power switch 15, 16 Rectifier 17 Capacitor 18 Code insertion hole shaft 20 Temperature control circuit 21 Rectification Circuit 22 Temperature comparator 23 Control switch 24 Current cutoff mechanism 25 Rectifier circuit with time constant 26 Relay coil 27a, 27b Latching relay 29 Quasi-voltage generating circuit 30 Voltage regulator A Heat-sensitive wire a Insulated flat plate b Good conductive flat plate c Insulating film d Protrusion insertion hole e Stapler-type compression terminal insertion hole f Stapler terminal g Insulating protrusion

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H05B 3/20 388 H05B 3/20 388 389 389 3/34 3/34 F-term (Reference) 3K034 AA05 AA06 AA10 AA16 AA34 BA08 BB08 BB10 BB13 BB15 BC04 BC12 BC23 CA02 CA18 CA32 EA15 FA15 HA04 JA09 3K058 AA13 AA16 BA02 CA04 CA22 CA34 CB02 CE13 CE19 3K092 PP05 QA05 QB15 QB19 QB30 QB76 QC02 RF42 QC02 RF42 QC27 RF02 QC21

Claims (9)

[Claims] 1. A flexible electric resistor layer (2), a low melting point soft resin layer (4) adhered to one surface of the flexible electric resistor layer, and the low melting point soft resin layer A non-combustible electric conductor (12) adhered on the resin layer (4); a surface of the non-combustible electric conductor; and the non-combustible electric conductor (12) of the low melting point soft resin layer (4). ) Is applied to the surface of the layer on which the heat-resistant resin layer (5) is applied.
And the low-melting soft resin layer (4) at a normal normal heat generation temperature of the electric resistor layer (2) and the nonflammable electric good conductor (12) when the electric resistor layer (2) is energized. , 4) are not melted, and when an abnormal heating temperature that causes the initial resistance of the electric resistor layer to change higher than the normal normal heating temperature occurs in the electric resistor layer (2), the abnormal heating temperature is reduced. At the position where the electric resistance is generated, an electric short circuit is formed between the opposing surfaces of the electric resistor layer (2) and the nonflammable electric good conductor (12) due to melting of the low melting point soft resin layer (4). A flexible surface control surface heating element configured as described above. 2. A flexible electric resistance layer (2), and two low melting point soft resin layers (4, 4) respectively attached to both surfaces of the flexible electric resistance layer. Two non-combustible electric good conductors (12, 12 ') respectively attached to both surfaces of the two low melting point soft resin layers (4, 4).
And a heat-resistant resin layer (5) adhered to the surface of the non-combustible electric good conductor, wherein the electric resistance layer (2) and the non-combustibility when the electric resistance layer (2) is energized At a normal normal heat generation temperature of the electric good conductor (12), the low melting point soft resin layer (4, 4) does not melt, and the electric resistance layer (2) has an electric resistance layer higher than the normal normal heat generation temperature. When an abnormal heat generation temperature occurs at which the initial resistance changes, the two non-combustible electric good conductors (12,
12 ′) and an electric short circuit formed by melting of the low melting point soft resin layer (4, 4) between opposing surfaces of the electric resistor layer (2). Flexible surface control surface heating element. 3. The electric resistance layer (2) and the non-combustible electric good conductor (12, 12 ′) are bonded or crimped only at edges. Flexible surface control surface heating element. 4. The abnormal heat generation temperature is (80 to 110).
The flexible surface control surface heating element according to claim 1, 2 or 3, wherein the temperature is in the range of ° C. 5. The non-combustible electric good conductor (12) is a good conductive ink obtained by mixing carbon particles, heat-resistant resin and solvent on the surface of non-combustible paper formed by mixing aluminum hydroxide or magnesium silicate with pulp. 5. The flexible surface control surface heating element according to claim 1, wherein is a non-combustible paper added and dried. 6. The flexible member according to claim 1, wherein said non-flammable electric good conductor is a metal film conductor obtained by applying a metal film to a heat-resistant resin film. Surface control surface heating element. 7. Both ends of the electric resistor layer (2)
One rectangular plate is bent at the center, one flat plate is a good conductive plate, and the other flat plate is an insulating plate on which an insulating film including a protrusion is applied. A heating power supply terminal (10), which penetrates the electric good conductor (12), passes through a protrusion insertion hole (h) provided in the other good conductive plate, and bends and fixes the tip of the protrusion. Item 7. A flexible surface control surface heating element according to any one of Items 1 to 6. 8. A rectangular flat plate is bent at one end of the good non-combustible electric conductor (12) at a central portion serving as a cord insertion hole shaft (18), and both flat plate portions are stapler-type compression terminal insertion holes (8). e), and a stapler terminal (f) is installed in the layer hole (e) such that one flat portion contacts the non-flammable electric good conductor and the other flat portion contacts the heat-resistant resin layer (5). The flexible surface controlled heating element according to any one of claims 1 to 7, wherein a leakage current sensing terminal (11) is provided. 9. A heating current supply terminal (8, 8) for applying a heating current to the electric resistor layer (2).
And the electric resistor layer (2) and the non-combustible electric good conductor (1).
2) and a detection terminal (1) provided to detect the electric short circuit and connected to
0, 11) and a control power supply for controlling to cut off the heating current to the heating current supply terminals (8, 8) when the electric short circuit is detected at the detection terminals (10, 11). And a circuit.
The flexible surface control surface heating element according to any one of the above.