JP2004311178A - Heating sheet, its manufacturing method, and its connection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the thickness of an electrical connection part between exothermic sheet products. <P>SOLUTION: This heating sheet is characterized by that conductive lines and and heat generation layers for radiating a far-infrared ray are formed on an insulation sheet in parallel with each other; the integrated heating sheet is formed by overlaying another insulation sheet on the conductive lines and the heat generation layers; two lines of electrode strips each having connection parts at both ends are fixed to one end part of the heating sheet in parallel with each other; and the positive sides and the negative sides of the conductive lines are respectively connected to both the electrode strips. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heating sheet, a method for manufacturing the heating sheet, and a connection device for the purpose of thinning a connection portion of an electrode of the heating sheet.
[0002]
[Prior art]
In a conventionally known apparatus that uses electric heat in a floor heating device, a structure in which a heater wire is laid on a floor plate, a net material of a good heat conductor is arranged on the upper surface of the heater wire, and a floor material is layered thereon. Met.
[0003]
Further, there has been known an electric heating sheet in which a conductive carbon paint is applied to the upper surface of a polyester film, and a sheet heating element provided with an electrode band is covered with rubber.
[0004]
[Patent Document 1] JP-A-9-280582
[0005]
[Patent Document 2] JP-A-2000-228275
[0006]
Problems to be solved by the present invention
In the above-described invention in which the conventional heater wire is used as the heating element, thermal efficiency is deteriorated due to linear heating, and the overall thickness is large, and the conventional heating wire cannot be rolled up or folded. In addition, there was a problem that no far infrared rays were emitted.
[0007]
Further, in the invention using carbon as the heating element, the temperature cannot be controlled, and therefore, a temperature controller is interposed in the circuit. However, there is a risk that the controller may be heated to a high temperature or a low-temperature burn may occur.
[0008]
Next, also in the case of the invention in which the infrared radiation layer made of carbon powder is provided, the electric connection portion of the heat generation sheet becomes thick, and there are many problems in laying.
[0009]
[Means for Solving the Problems]
The present invention uses a very thin electrode strip, such as a copper thin plate, to electrically connect the heating sheets to each other by caulking, so that the connection is reliable, the workability is good, and the whole is extremely thin. (For example, about 2 mm) to solve the conventional problem.
[0010]
That is, according to the present invention, a conductive strip and a heating layer that radiates far-infrared rays are provided in parallel on an insulating sheet, and the insulating sheet is applied on the conductive strip and the heating layer to form an integrated heating sheet. To one end of the heat generating sheet, two electrode strips having connection portions at both ends are fixed in parallel, and the positive and negative sides of the conductive strip are connected to the two electrode strips, respectively. The conductive strip is a thin silver layer, and the conductive strip is a combination of a base conductive strip and a branch conductive strip.
[0011]
Next, the invention of the method provides a heating layer that radiates far-infrared rays at a predetermined interval to the insulating sheet, and then provides a conductive strip parallel to the heating layer and a conductive strip crossing the heating layer, and the heating layer and the conductive strip. An insulating sheet is attached to the upper part, the two sheets are heat-sealed integrally to form a heat generating sheet, and two electrode strips having connection portions at both ends are fixed in parallel to one end of the heat generating sheet, A method of manufacturing a heat generating sheet, wherein a positive side and a negative side of the conductive strip are connected to the electrode strip, respectively, wherein the heat generating layer is a carbon paint containing carbon powder as a main material. The temperature is raised to a certain temperature, and the upper limit temperature can be controlled. The conductive strip is a silver paint containing silver powder as a main material and is characterized by being printed or applied.The electrode strip is made of a thin copper plate, has a male connection at one end, and has a male connection at one end. And a female connection portion.
[0012]
Next, the invention of the device is a connecting device for a heating sheet, wherein the male connecting portion of the electrode strip of one heating sheet is inserted into the female connecting portion of the electrode strip of the other heating sheet, and is caulked and fixed. The caulking is characterized in that a caulking piece of the female connecting portion is inserted and fixed in the concave portion of the male connecting portion.
[0013]
As the heat insulating sheet in the invention, many synthetic resin sheets can be used as long as they have insulating properties, toughness, and heat insulating properties and have temperature resistance characteristics (for example, they do not soften and deform to about 100 ° C.). For example, there are polyester, polyethylene, polypropylene, polyacetal, polycarbonate and the like.
[0014]
In the carbon paint used in the present invention, ceramic powder having conductive properties is mixed into carbon powder. For example, when the temperature rises to 45 ° C. or higher, the electric resistance is automatically increased so that current cannot be supplied. Therefore, even if the controller breaks down, there is no possibility that an unexpected disaster may occur due to overheating.
[0015]
According to the present invention, for example, when the maximum temperature is set to 45 ° C., no heat is generated at 45 ° C. or higher, and far infrared rays act.
[0016]
Since the heat generating sheet of the present invention is extremely thin (for example, 0.25 mm), even if it is inserted into a heating panel or a heating tatami, it is not necessary to modify the entire thickness and it can be rolled. It is convenient for transportation, construction, storage, etc.
[0017]
The carbon coating of the present invention shrinks when the matrix polymer particle layer becomes low in temperature, the semiconductor carbon is stuck, the electric resistivity is weakened, the amount of electricity is increased and the calorific value is increased when electricity is applied. Since the polymer particle layer separates and the electric resistance increases, electricity stops, and high temperature automatic control can be performed. When carbon powder is used as the carbon particles, radiation of far-infrared rays and generation of anions are expected, and the environment is improved.
[0018]
According to the manufacturing method of the present invention, the heat generating sheet can be formed by printing and other means on the heat generating layer and the conductive strip on the insulating sheet, so that a long heat generating sheet of any width can be produced at high speed. it can. Further, since the heat generating sheet is extremely thin as described above, it can be stored and transported and handled in a small volume even if it is large in volume, and can be cut to a required amount to obtain a heat generating sheet if it is rolled up.
[0019]
Conventionally, when a heating sheet having a predetermined area is connected and used, the electric connector may be thick (for example, 6 mm or more). However, according to the present invention, the electric connector can be extremely thin (for example, about 2.0 mm). The point was solved, construction was facilitated, and there were no restrictions on the laying position.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
According to the present invention, a conductive strip made of silver powder and a heating layer made of carbon paint are printed on the upper surface of the insulating sheet, and both printings can be performed to a desired thickness by printing once or a plurality of times. Next, an insulating sheet is adhered to the conductive strip and the upper surface of the heat generating layer to be integrally heat-sealed to form a heat generating sheet of the present invention. Next, one side of the heat generating sheet has connection portions at both ends. The electrode strips were fixed and electrically connected.
[0021]
In order to use the present invention for a floor heating panel, the heating sheet provided with the electrodes is sandwiched and integrally fixed between a discard plate made of a heat insulating material and a flooring. In the above, the disc is screwed. The heat generating sheet has a required area after inspecting the surface of the discarded plate so as not to damage the heat generating layer coated (printed) with the carbon paint and the conductive strip coated (printed) with the silver powder paint. Is laid, and fixed with adhesive tape. Next, the flooring is fixed by screwing or nailing. In this case, it is important not to damage the heat generating sheet. If screws are screwed into the heat generating layer and the conductive strip, remove the screws and fix the heat generating sheet (heat generating layer etc.) with heat resistant insulation repair tape. It must be repaired or replaced with an intact sheet.
[0022]
Since the heat generating sheet according to the present invention is formed for each fixed small area, if the heat generating sheet is damaged or any other accident occurs, only the relevant portion can be replaced.
[0023]
In addition, when manufacturing the heat generating sheet of the present invention, since a method of completing the energizing circuit is adopted for each small area, after manufacturing a long heat generating sheet, it is divided for each circuit, and a cord and a connector are connected. A heat generation sheet can be manufactured reasonably and efficiently.
[0024]
If the dimensions of the heat generating sheet are, for example, 30 cm in width and the length is appropriate, it conforms to the dimensions of the original building standard, so that the unit heat generating sheet can be assembled freely until it reaches the required area.
[0025]
According to the present invention, the male connection portion of the electrode strip of one heating sheet is inserted into the female connection portion of the electrode strip of the other heating sheet, and is caulked and fixed, so that the connection can be reliably performed. In this case, since the thickness of the connection portion is approximately three times the thickness of the electrode strip, it can be extremely thin (for example, about 2.0 mm).
[0026]
Therefore, even when the heating sheet is applied to floor heating, heating tatami mats, and the like, there is no possibility that the thickness of the connection portion becomes a problem, and the construction is facilitated.
[0027]
Embodiment 1
An embodiment of a heat generating sheet according to the present invention will be described with reference to FIGS. Heat-generating layers 2 and 2a are applied (printed, roller-coated) at a predetermined width and length (for example, 50 mm × 300 mm) at predetermined intervals on a polyester film 1 with a carbon paint, and silver is provided in parallel with the heat-generating layers 2 and 2a. The base conductive strips 3a, 3b, 3c and 3d and the branch conductive strips 4 and 4a connected to the heat generating layers 2 and 2a are applied with a paint, and the polyester film 1a is applied to the surface thereof. The electrode strips 5 and 5a are connected in parallel to one side of the base conductive strips 3a, 3b, 3c and 3d, and the male and female connection portions 8 and 9 are connected to both ends of the electrode strips 5 and 5a, respectively, to generate a heating sheet. 10 is constituted. The electrode strips 5 are connected to the base conductive strips 3a and 3c via the ferrules 7, and the electrode strips 5a are connected to the base conductive strips 3b and 3d via the ferrules 7a. From the base conductive strips 3a, 3b, 3c, 3d, a large number of branch conductive strips 4, 4a extend in a direction perpendicular to and intersect the heat generating layers 2, 2a. The circuit is completed by conducting electricity as in the layer 2, the branch conductive strip 4, and the base conductive strip 3b.
[0028]
In the above embodiment, the base conductive strips 3a and 3b complete the circuit with the base conductive strip 3b via the branch conductive strip 4, the heat generating layer 2, and the branch conductive strip 4, so that the heat generating layer is always included in a part of the energized circuit. 2 intervenes, and the object can be achieved.
[0029]
In the above embodiment, the female connection portion 8 and the male connection portion 9 are provided at both ends of the electrode strips 5 and 5a, and the female connection portion 8 and the male connection portion of the electrode strips 5 and 5a are close to each other. As shown, they are fixed in parallel. Reference numeral 6 in the drawing is a fitting hole.
[0030]
The electrode strips 5 and 5a are made of a good conductive material (for example, a thin copper plate). The female connecting section 8 is provided with a plurality of caulking pieces 8a and 8a for holding the male connecting section 9. A recess 9a is provided for the caulking piece 8a to enter.
[0031]
Accordingly, when the male connecting portion 9 is inserted into the female connecting portion 8 and the caulking piece 8a is swaged into the recessed portion 9a, the thickness of the connecting portion becomes almost three times the thickness of the material. Therefore, even if the front and back surfaces of the connection part of the electrode strip are covered with the insulating sheet 11 and fixed with the claws 7 and 7a, the thickness of the connection part can be reduced to about 2 mm. Together with this, the whole can be kept within 2 mm.
[0032]
Embodiment 2
An embodiment of the manufacturing method according to the present invention will be described with reference to FIG. 4. The heating sheet 10 is cut out (for example, 50 mm × 200 mm) from the heating sheet roll 12, and then the preformed electrode strips 5 and 5 a are removed from the heating sheet. 10, and fixed to the base conductive strips 3a, 3b, 3c, 3d and the electrode strips 5, 5a by means of the diapers 7, 7a. Is covered with an insulating sheet 11 to form a heat generating sheet product 15 of the present invention.
[0033]
A female connecting portion 8 and a male connecting portion 9 are provided at both ends of the electrode strips 5 and 5a of the heating sheet product, and a female connecting section 8 is provided at a proximal end of the electrode strips 5 and 5a. And a male connection 9. Therefore, when connecting a plurality of heat generating sheets 15, the electrode strips 5, 5a are always unified to the plus side and the minus side, and there is no possibility that the plus and minus at the time of connection are confused.
[0034]
Embodiment 3
An embodiment of the connection device of the present invention will be described with reference to FIG. The heating sheet products 15, 15a are arranged in parallel, and the electrode strips 5, 5a of one heating sheet product 15 are fitted with the electrode strips 5, 5a of the other heating sheet product 15a and the electrode strips 5, 5a of the heating sheet product 15b. Then, the two heat generating sheet products could be connected by caulking the fitting portions 14 and 14a. In this way, the assembly area of the heating sheet product can be freely selected.
[0035]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, there exists an effect which extremely thins a construction thickness by making the thickness of the connection part with an adjacent heat generation sheet as thin as possible.
[0036]
ADVANTAGE OF THE INVENTION According to this invention, there exists an effect which can mass-produce a heating sheet product.
[0037]
Further, according to the invention of the apparatus, by using the heating sheet product of the present invention, the thickness of the connection portion is made as thin as possible, whereby the heating sheet can be easily and reliably formed without damaging the floor or the like. There is an effect that can be laid.
[0038]
In addition, the connecting portion is in a wavy state after being caulked, making it difficult to generate backlash, and can be adjusted stepwise (for example, in three steps).
[Brief description of the drawings]
FIG. 1 is a plan view in which a part of an embodiment of the present invention is omitted.
FIG. 2A is an enlarged cross-sectional view taken along the line AA in FIG.
(B) Similarly, the BB sectional enlarged view in FIG.
(C) Similarly, the CC sectional view enlarged view in FIG.
FIG. 3A is an enlarged plan view in which a part of the electrode strip is omitted.
(B) Similarly, DD sectional enlarged view.
(C) The EE sectional enlarged view similarly.
FIG. 4A is a block diagram.
(B) A conceptual diagram in which a part is also omitted.
FIG. 5 (a) is a partially omitted plan view showing an example of the connection of the heating sheet.
(B) An enlarged plan view in which a part of the connecting portion is omitted.
(C) The enlarged front view similarly.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Polyester film 2, 2a Heating layer 3a, 3b, 3c, 3d Base conductive strip 4, 4a Branch conductive strip 5, 5a Electrode strip 8, 9 Female / male connection part 7 Stopper 10 Heat generation sheet 11 Insulation sheet 12 Roll 14 Fitting part 15 Heat generation sheet products

Claims (9)

On the insulating sheet, a conductive strip and a heating layer that radiates far-infrared rays are provided in parallel, and an insulating sheet is coated on the conductive strip and the heating layer to form an integrated heating sheet, and A heat-generating sheet, comprising two electrode strips having connection portions at both ends fixed in parallel to one end, and the positive and negative sides of the conductive strip are connected to the two electrode strips, respectively. The heat generating sheet according to claim 1, wherein the conductive strip is a thin silver layer. The heat generating sheet according to claim 1, wherein the conductive strip is a combination of a base conductive strip and a branch conductive strip. A heat generating layer that radiates far-infrared rays at predetermined intervals is provided on the insulating sheet, and then a conductive strip parallel to the heat generating layer and a conductive strip crossing the heat generating layer are provided, and the insulating sheet is attached on the heat generating layer and the conductive strip. The two sheets are integrally heat-sealed to form a heating sheet, and two electrode strips having connection portions at both ends are fixed in parallel to one end of the heating sheet, and the conductive strip is fixed to the electrode strip. A method for manufacturing a heat generating sheet, comprising connecting a plus side and a minus side of a strip, respectively. 5. The method for manufacturing a heat generating sheet according to claim 4, wherein the heat generating layer is made of a carbon paint containing carbon powder as a main material, and is made of a material which can be heated to a certain temperature and controlled to an upper limit temperature. The method for manufacturing a heat generating sheet according to claim 4, wherein the conductive strip is a silver paint containing silver powder as a main material, and is printed or applied. The method according to claim 4, wherein the electrode strip is made of a thin copper plate, has a male connection at one end and a female connection at the other end. A connecting device for a heating sheet, wherein a male connecting portion of an electrode strip of one heating sheet is inserted into a female connecting portion of an electrode strip of the other heating sheet, and is caulked and fixed. 9. The heating sheet connecting device according to claim 8, wherein the caulking inserts and fixes a caulking piece of the female connecting portion to the concave portion of the male connecting portion.

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