JPH0782907B2 - Woven heating element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is a general weaving means in which a conductive wire for a heating element and a strip-shaped woven electrode connected to the conductive wire are partially woven. It is possible to woven together at once, and furthermore, the heat generation distribution state can be switched evenly or densely, the watt density can be switched between high and low, and the horizontally long electrode pitch can be formed at a low watt density. The present invention relates to a structure of a woven heat generating element that can be woven and can be continuously and consistently woven.

(Prior Art) A conventional woven heating element includes a warp group in which conductive wires for a heating element are arranged every other one or more in a warp insulating thread such as a woven fiber, and a predetermined interval in a weft insulating thread. A weaving group composed of a plurality of conductive wires woven into a strip-shaped weaving electrode arrayed in the weft direction.
It is also known from Japanese Patent No. 41893.

(Problems to be Solved by the Invention) In the woven structure in which the conductive wire and the woven electrode are entangled over the entire width and electrically connected in this manner, the design of the warp is constant in the weaving process. Since it is invariable, the specific resistance and distribution state in the conductive wire between the electrodes are fixed. Therefore, even if it is desired to switch the one set for uniform heating to a locally rough part and a dense part. In addition, there is an inconvenience in that it is structurally impossible even if it is desired to perform the reverse switching and it can only be used for fixed use.

Also, if you want to switch the capacity (watt output) between high and low in a predetermined shape, switching is not possible because the resistance value between the weave electrodes is constant, and because there is only a change in the voltage level, it is not possible with a constant voltage commercial power supply. I can not cope.

Furthermore, it is possible to change the watt density by means of changing the pitch between the electrodes, but in this case, increasing the pitch decreases the watt density inversely proportionally, and decreasing the pitch increases the watt density. It is impossible to change the pitch between electrodes without changing the watt density, in other words, to change the heating area. In other words, it is impossible to change the heating area. However, it has been a problem that it is difficult to easily provide a conventional one that can support a wide variety of switching.

In order to address such a problem, the present invention can switch between uniform heating and partial coarse / dense heating, switch watt density or watt output, and can easily and accurately be applied to an elongated heating element having a short electrode pitch. It has been invented to provide a woven heating element that can be mass produced by consistent continuous weaving, and can be used in a switching manner that can meet the needs of consumers and has practical value. The purpose of the present invention is to provide a large amount of woven heating elements at a low price while maintaining high quality.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention of claim 1 is directed to a large number of warp insulating yarns (1), as will be apparent from the embodiments shown in the accompanying drawings. , A warp group formed by arranging conductive wires (2) for heating elements alternately or alternately.
In a single row, a weaving electrode (5) woven by intersecting and weaving a plurality of conductive yarns (4) in a plurality of weft insulating yarns (3) intersecting and weaving this warp group. A weave electrode (5 _A ) and a plurality of weave electrodes (5 _B ) and (5 _C ) that are close to each other and a group of wefts that are alternately arranged at a predetermined interval. The electrodes (5 _A ) are electrically connected to all the conductive wires (2) and woven, while the double-row woven electrodes (5 _B ), (5 _C ) and their intermediate and front and rear parts are appropriately arranged. weft insulating yarn (3) and weave weaving the weft consisting organization Department of the number (6), said double row weave electrodes (5 _B), one of the woven electrode of the (5 _C) (5 _B) And a part of the weft insulating thread (3) and a part of the conductive wire (2) and a part of the warp insulating thread (1) are combined with the one woven electrode (5 _B ). Part of the conductive wire (2) Electrically connected to one of the woven layer consisting tighten Orinase and (7) and, woven electrode of the double row (5 _B), (5 _C)
The other weave electrode ( _5c ) and the remaining weft insulation thread (1)
To the remaining conductive wire (2) and remaining warp insulation yarn (1)
The other woven electrode (5 _C ) and the other conductive wire (2) that has been combined and electrically connected to form another woven layer (8). It is characterized in that it is formed into a double layer weave and an insulating sheet (9) is interposed between the both weaving layers (7) and (8) to form a woven heating element.

Therefore, based on the above-mentioned structure, the second aspect is a unit heating element of a predetermined length in which a single row of weave electrodes (5 _A ) and multiple rows of weave electrodes (5 _B ) and (5 _C ) are present at both ends. According to claim 3, the double-row woven electrodes (5 _B ) and (5 _C ) are unitary heating elements of a predetermined length, and the single-row woven electrodes (5 _A ) are present at both ends. In the fourth aspect, the double-row woven electrodes (5 _B ) and (5 _C ) are continuous to one side of the conductive wire (2), and 6. Each of the continuous half of the conductive wires (5 _B ) and (5 _C ) is electrically connected to each half of the conductive wires (2). It is specified in the configuration of claim 2 or 3 that each of the plurality of lines or an appropriate combination thereof is electrically connected alternately.

On the other hand, a sixth aspect of the present invention comprises a plurality of warp insulating yarns (1) and a plurality of warp yarn conductive wires (2) arranged alternately or alternately, and a warp yarn group intersecting the warp yarn groups. The weaving electrodes (5) woven by weaving a plurality of conductive yarns (4) in parallel with each other in a plurality of weaving weft insulating yarns (3) that are woven and crossed with each other are arranged in a plurality of rows (5). _B ), (5 _C ) and a weft group having a predetermined interval and arranged, and a double row of woven electrodes (5 _B ), (5 _C ) and an appropriate number of intermediate and front and rear parts thereof. weft insulating yarn (3) and a weft consisting of woven that weave portion (6) is woven electrode (5 _B) of the double row, one woven electrode (5 _B) of (5 _C) and by combining a portion of the conductive line (2) and some through the insulating yarn (1) for some weft insulating yarn (3), in combination the said one woven electrode (5 _B) one Part of the conductive wire (2) One woven layer consisting tighten Orinase by electrical connection (7), the other woven electrode (5 _C) and the remainder of the conductive wire to the remaining weft insulating yarn (3) (2) and the remaining Another weaving layer (8) formed by combining warp insulating yarns (1) and electrically connecting the other woven electrode (5 _C ) and the remaining conductive wire (2). It is characterized in that it is formed into a double-layered double-layered bag weave, and an insulating sheet (9) is interposed between the both weave layers (7) and (8) to form a woven heating element.

On the basis of the configuration of claim 6 described above, claim 7 specifies on the configuration that the double-row woven electrodes (5 _B ) and (5 _C ) are unit heating elements each having a predetermined length at both ends. And further claim 8 is a double row of woven electrodes (5 _B ), (5 _C ).
Are electrically connected to each half of the conductive wire (2), and the other weave electrodes (5 _B ) and (5 _C ) are connected to each of the conductive wires (2) one by one, a plurality of them, or the like. It is specified on the structure of claim 7 that they are electrically connected to each other in an appropriate combination alternately.

(Operation) In the present invention, the warp insulating yarn (1) and the conductive wire (2) are used as warp yarns.
Weft insulation yarn (3) and conductive yarn (4) are respectively provided as weft yarns, and the weaving is performed only by a combination of a plain weave and a double bag weave. 5 _B ),
By making a double bag weave in (5 _C ) and interposing an insulating sheet (9), the divided heating element conductive wire (2) and woven electrodes (5 _B ), (5 _C ) Weaving and electrical connection are possible without any electrical interference between the two, and when connecting to the controller, each woven electrode (5 _A )
It is easy to connect a conductor to one end of ~ (5 _C ).

According to claim 2, the single row weave electrode (5 _A ) is a common one electrode or a relay electrode, and the double row weave electrodes (5 _B ) and (5 _C ) are a switching one electrode or a voltage application counter electrode. Each of them can be used, and partial heating, whole surface heating, increase / decrease in watt density, and partial change in densification of watt density can be selectively operated according to the connection form.

According to the third aspect of the present invention, each of the above-mentioned switching can be all performed by the weaving heat of the unit body, and can correspond to various modes.

The fourth aspect makes it easy to switch between half-surface heating and full-surface heating, and the fifth aspect is particularly suitable for switching the heating area, and is also suitable for partially varying the watt density.

According to the sixth aspect, the heating change state according to the fourth aspect can be switched by one heating element.

Next, claim 7 is an example suitable for arbitrarily performing the heating change of the above-mentioned item 4, and claim 8 is a structure suitable for performing the heating switching of the entire surface and the half surface and the output watt increase / decrease switching. Is.

(Example) Hereinafter, an example of the present invention is described based on an accompanying drawing.

FIGS. 1 and 2 are organization charts showing essential parts of an embodiment according to the inventions of claims 1 and 2, wherein a warp group and a weft group are woven into a plain weave in the majority part thereof, For the warp group, warp insulation yarn such as polyethylene flat yarn (1)
Conductive wires (2) for heating elements, which are thin and thin tape-shaped and made of a composite material of tetrafluoroethylene resin and conductive carbon, are alternately or alternately applied to (the insulating thread in the left-right direction in FIG. 1) or It is arranged every few lines.

Next, regarding the weft yarn group, the weft insulating yarn (3) woven into the warp group (insulating yarn in the vertical direction in FIG. 1), for example, polyethylene flat yarn is mainly used, and the weft insulating yarn (3) A plurality of conductive yarns (4), for example, a strip-shaped woven electrode (5) formed by arranging adjacent copper foil yarns obtained by spirally winding a copper foil around a core yarn in parallel and weaving them into a warp group.
There are three articles, one with a predetermined area per unit heating element (5 _A ) and one with multiple rows (5 _B ) and (5 _C ), and the warp group is cut into a predetermined length. In the case where the warp group has a fixed size of 1 to 3 tabs, it has a single row woven electrode (5 _A ) at a position near one cutting end of the warp group, and has a narrow interval between each other at a position near the other cutting end. It has double row weave electrodes (5 _B ) and (5 _C ) close to each other.

For single row weave electrode (5 _A ), warp insulation yarn (1) of warp group
Further, the conductive wires (2) are contacted with each of the conductive wires (2) to be electrically connected by being entangled in series by twill weaving or the like. In the figure, the shaded areas correspond to the locations where electrical connections are made.

In this case, since the conductive wire (2) and the conductive thread (4) have the entire surface of the conductive portion, it is easy to electrically connect them by simply entangling them.

On the other hand, the double row weave electrodes (5 _B ) and (5 _C ) are individually connected to the single row weave electrode (5 _A ) through the resistor without causing an electrical short circuit between the electrodes. Therefore, in order to divide the conductive wire (2) in the warp group into two and connect one to the electrode (5 _B ) and the other to the electrode (5 _C ), weaving of this part is necessary. The formation must be a special form.

Therefore, as shown in FIG. 2, both electrodes (5 _B ),
(5 _C ) and the weft insulating yarn (3) located in the middle thereof and an appropriate number of weft insulating yarns (3) located in the front and rear parts are woven, and the weave structure part (6) is one The tissue part in which the plurality of conductive threads (4) forming the electrode (5 _B ) and the plurality of weft insulating threads (3) before and after the weave are woven in half every other conductive wire (2). Number and 1 of the warp insulation yarn (1)
By weaving with a plain weave etc. in combination with half the number that flies to the book holder, the woven electrode (5 _B ) and the conductive wire (2) are electrically connected to form one woven layer (7). In addition, the texture portion in which the plurality of conductive yarns (4) forming the other woven electrode (5 _C ) and the plurality of weft insulating yarns (3) before and after it are woven is the remaining conductive wire (2). ) And warp insulating yarn (1) are combined and woven to electrically connect the woven electrode (5 _C ) and the conductive wire (2) to form the other woven layer (8). ing.

Thus, the above-mentioned two woven layers (7) and (8) are connected at both front and rear ends and are separated vertically from each other to form a double-layered bag-weaving structure.

In addition, in each of the woven electrodes (5 _A ) to (5 _C ), the weft insulating yarns (3) that are lined up before and after the woven electrodes are replaced with polyethylene flat yarns, for example, thin yarns such as staple fiber spun yarns are used. However, it is preferable that the bundle of conductive yarns (4) forming each electrode is woven as a reinforcing yarn row layer for fixing the position so as not to shift or move.

As described above, it is possible to continuously weave most of the single woven portion and the double woven portion having the double-row woven electrodes (5 _B ) and (5 _C ) using the loom, Then, in the step immediately after the weaving step, a polyethylene film or the like is provided between the two weaving layers (7) and (8) formed by double-layer hollow weaving by manual work or mechanized automatic work. A thin woven sheet (9) is inserted from the side to obtain a continuous woven heating element.

The weave width of the weft insulating yarn (3) existing between the single row weave electrode (5 _A ) and the double row weave electrodes (5 _B ) and (5 _C ) in which the weave heating elements are provided close to each other. A unit heating element is obtained by cutting in the direction, and as shown in FIGS. 1, 3 and 4, about half of the conductive wire (2) is a double weave electrode (5 _A ),
(5 _B ) are connected in parallel and the remaining half of the conductive wires (2)
For example, a weave heating element was obtained in which the weave electrodes (5 _A ) and (5 _C ) were connected in parallel, and there was no direct electrical interference between the weave electrodes (5 _B ) and (5 _C ). To be

It should be noted that the one shown in FIG. 1 has a form in which every other conductive wire (2) is alternately connected to the woven electrode (5 _B ) and the woven electrode (5 _C ). Correspondingly, when a voltage is applied between the woven electrode (5 _A ) and the woven electrode (5 _B ) or the woven electrode (5 _C ), half the resistance is energized. When it becomes heating operation, short-circuiting the woven electrodes (5 _B ) and (5 _C ) and applying a voltage between this and the woven electrode (5 _A ) energizes all resistors, heating operation of the entire surface and all outputs. Therefore, the watt output can be switched between two stages.

Next, the one shown in FIG. 3 has a form in which the conductive wire (2) is connected to the weave electrodes (5 _B ) and (5 _C ) half by half on one side.
Is an example of the invention of FIG. 2, when a voltage is applied between the woven electrode (5 _A ) and the woven electrode (5 _B ) or the woven electrode (5 _C ), half the resistance is energized and the upper half surface, 1/2 output Or, the heating operation of the lower half surface 1/2 output is performed, short-circuiting the weave electrodes (5 _B ) and (5 _C ) and applying a voltage between this and the weave electrode (5 _A ) energizes all the resistance. Then, heating operation is performed on the entire surface and all outputs. Further, when the distances l ₁ and l ₂ between the woven electrode (5 _A ) and the woven electrodes (5 _B ) and (5 _C ) are almost equal, the woven electrode (5 _B ) and the woven electrode (5 _C ) are When the current is energized, the pitch between the electrodes becomes l ₁ + l ₂ which is substantially doubled. Therefore, heating operation of 1/4 output over the entire surface is possible, and it is possible to switch the energization area, watt output, and watt density in three stages. Become.

On the other hand, FIG. 4 shows that the conductive wire (2) is appropriately connected to the woven electrodes (5 _B ) and (5 _C ), such as every two wires, once every two wires, and every three wires. An example in which the arrangements are different is shown and corresponds to claim 5, and in the connection form shown in FIG. 4, when electricity is applied between the woven electrode (5 _A ) and the woven electrode (5 _B ),
The conductive wire (2) on the upper surface is 2
Roughly the minimum watt density in the book, the average of the conductive wires (2) on the middle surface is 3 and the average watt density, and the conductive wire (2) on the lower surface is dense with 3 and the watt density is It shows the maximum value, and by adopting a sparse and dense distribution form, it becomes possible to perform heating suitable for, for example, head cold foot heat.

In addition, in this example, when the woven electrodes (5 _B ) and (5 _C ) are short-circuited and electricity is applied between this and the woven electrode (5 _A ), it is possible to energize all the conductive wires (2) and It becomes an output, and thus it becomes possible to switch between two steps of coarse and fine and soaking.

Next, FIG. 5 is an example according to claims 3 and 5, wherein a single row of weave electrodes (5 _A1 ), (5 _A ) and (5 _C ) intervenes in between. 5 _A2 ) is arranged at both ends to form a unit heating element, and the woven electrodes (5 _B ) and (5 _C ) are alternately connected to the conductive wire (2). I am doing it.

In this example, seven kinds of switching heating operations can be performed by changing the combination of the woven electrodes to which a voltage is applied as follows.

(A), 5 _A1 and 5 _B or 5 _C on the left half surface, 1/4 output, (b), 5
Left half plane with _A1 and 5 _B , 5 _C short circuit, 1/2 output, (C), 5 _A2 and 5 _B
Or 5 _C right half plane, 1/4 output, (D), 5 _A2 and 5 _B , 5 _C shorted right half plane, 1/2 output, (E), 5 _A1 and 5 _A2 (5 _B and 5 Same as _C ), 1/4 output, (f), 5 _A1 , 5 _A2 short circuit and 5 _B or 5 _C
, Full output, 1/2 output, (g), full output with 5 _A1 , 5 _A2 short circuit and 5 _B , 5 _C short circuit.

Unlike the above example, the woven electrode (5 _B ) is the upper half conductive wire (2), and the woven electrode (5 _C ) is the lower half conductive wire (2).
Those connected respectively to are also available, and claim 3,
This corresponds to the example according to 4, which can perform 6 types of switching heating operations. On the other hand, FIG. 6 is an example according to claim 8, wherein double row weave electrodes (5 _B ) and (5 _C ) are provided at both ends of a unit heating element having a predetermined area, respectively.
One of them, for example, (5 _B1 ) and (5 _C1 ) on the left side of the figure is woven into one half of each conductive wire (2) and electrically connected to each other, and the other weave electrodes (5 _B2 ) and (5 _C2 ). ) Has a structure in which every other conductor wire (2) is alternately woven and electrically connected.

In this example, six kinds of switching heating operations are possible by variously changing the combination of the woven electrodes to which a voltage is applied as described below.

(A) 5 _B1 and 5 _B2 or 5 _C2 on lower half surface, 1/4 output, (b), 5
Upper half surface with _C1 and 5 _B2 or 5 _C2 , 1/4 output, (C), 5 _B1 and 5 _B2 ,
5 _C2 short circuit with lower half, 1/2 output, (d), 5 _C1 and 5 _B2 , 5 _C2 short circuit with upper half surface, 1/2 output, (e), 5 _B1 and 5 _C1 short circuit and 5 _B2 , Five
_{With C2} short circuit, 1/2 output, (f), 5 _B1 , 5 _C1 short circuit and 5 _B2 ,
Full output with 5 _C2 short circuit.

As for the combination of a pair of double row weave electrodes, in addition to the above example, various ones in which the connection form of each weave electrode with the conductive wire (2) is changed can be applied. It is of course possible to change the watt density.

Although the respective examples have been described above, particularly in the case of the example according to claim 2, the length parallel to the longitudinal direction of the electrodes does not change, and the pitch between the electrodes is narrowed to form a heating element having an area half the predetermined area. There is an advantage that you can respond immediately if you want to get it.

That is, in the case of the conventional products listed in the section of the prior art, if weaving is performed with the pitch of the woven electrodes narrowed in half, the resistance between the electrodes is halved and the wattage output is the same voltage feed. In the case of, it becomes four times, which is not applicable as a heating element.

However, in the case of the example of the present invention, the pitch of the woven electrode is 1 /
Even if it is narrowed down to 2, the weaving electrodes (5 _B ) and (5 _C ) of two rows are alternately connected to the alternating conducting wires (2) to form one weaving electrode (5 _B). ) Or (5 _C ), the watt output will be halved, and the reduction in area and the reduction in watt output can be matched to obtain a woven heating element that can meet the demand.

(Effects of the Invention) The present invention has the configurations and operations described above, and the effects are as follows.

According to claim 1, a single-row woven electrode (5 _A ) and a double-row woven electrode (5 _B ),
(5 _C ) in combination, the double-row side is formed into a double-layer hollow weave, and the insulating sheet (9) is interposed between both layers (7) and (8). (5 _B ) and (5 _C ) can be used as independent electrodes so that they do not interfere with each other. Therefore, it is possible to continuously weave long products by woven in a predetermined pattern and cut them. If so, a desired unit heating element can be easily obtained, so that a mass-produced effect due to improved productivity can be provided at a low cost.

The economical effect that this low cost can provide is the same as in claim 6 in which the weaving electrodes (5 _B ) and (5 _C ) in multiple rows are repeatedly woven.

According to claim 2, the single-row weave electrode (5 _A ) is used as a common one-side electrode or relay electrode, and the double-row weave electrodes (5 _B ) and (5 _C ) are used as one-side switching electrodes or counter voltage for voltage application. Each of them can be used, and there is an advantage that partial heating, whole surface heating, increase / decrease in watt density, and partial variation in watt density can be selectively operated according to the connection form.

Further, the third aspect has an advantage that all of the above-mentioned switching can be performed by the weaving heat generation of the unit body and can correspond to various modes.

With respect to claim 4 which refers to claim 2, it is possible to easily perform three-stage switching of alternate switching of the entire surface and half surface, and regarding claim 5 which refers to claim 2, between coarse and fine and uniform. It has the advantage that heating and switching of the watt density can be easily performed, and both of them have the advantage that they can be applied to elongated heating elements with a narrow electrode pitch without changing the longitudinal length of the woven electrodes. There is.

Claims 4 and 5, which further refer to claim 3.
With respect to 7 and 8, in addition to the effects described above, 6 or 7 types of switching modes are possible, and when actually used, there is an advantage that the demand can be satisfied by adapting to a variety of usage modes.

[Brief description of drawings]

1 and 2 are plan views and cross-sectional views of conceptual weaving texture according to the embodiments of the present invention, and FIGS. 3 to 6 are plan views of conceptual weaving texture according to each embodiment of the present invention. (1) ... warp insulating thread, (2) ... conductive wire, (3) ... weft insulating thread, (4) ... conductive thread, (5 _A ) ... single row woven electrode, (5 _B ) , (5 _C ) ... double-row woven electrode, (6) woven structure, (7) woven layer, (9) insulating sheet.

Claims (8)

[Claims] 1. A warp group comprising a plurality of warp insulating yarns (1) and conductive wires (2) for heating elements arranged alternately or alternately and a plurality of warp yarns intersecting and weaving. the weft insulating yarns (3) of the present, conductive yarn a plurality of (4) is parallel to intersect the warp group woven woven electrode (5), mutually and woven electrode of a single row (5 _a) A weft yarn group having closely arranged double-row woven electrodes (5 _B ) and (5 _C ) alternately arranged at a predetermined interval, and the single-row woven electrode (5 _A ) is the conductive wire. Electrically connected to all of (2) and woven, while
The weaving structure portion (6) for weaving the weft yarns (5 _B ) and (5 _C ) in multiple rows and the appropriate number of weft insulating yarns (3) in the middle portion and the front and rear portions thereof is the double row One of the weaving electrodes (5 _B ) and (5 _C ) of one of the weaving electrodes (5 _B ) and some of the weft insulating yarns (3) are partially conductive wires (2) and partially warped. yarn (1) a combination of and the one woven electrode (5 _B) whereas consisting tighten Orinase and electrically connected to a portion of the conductive line (2) in combination said a woven layer (7) And the double row weave electrode (5 _B ),
(5 _C) other woven electrode among the (5 _c) and the rest of the remaining conductive lines against weft insulating yarn (3) (2) and in combination remaining after isolation yarn (1), the other To form a double-layer hollow weave composed of the weave electrode (5 _C ) and the other conductive wire (2) combined with each other and electrically connected to the other weave layer (8). An insulating sheet (9) is interposed between the two woven layers (7) and (8). 2. The woven heating element according to claim 1, wherein the single row woven electrode (5 _A ) and the double row woven electrodes (5 _B ) and (5 _C ) are unit heating elements having a predetermined length present at both ends. . 3. The unit heating element having a predetermined length, wherein the double-row woven electrodes (5 _B ) and (5 _C ) are present in the middle portion and the single-row woven electrodes (5 _A ) are present at both ends. Woven heating element. 4. A double row of woven electrodes (5 _B ) and (5 _C ) are electrically connected to one half of the conductive wire (2) and the other half of the conductive wire (2) respectively. Claim 2 which is physically connected
Or the woven heating element according to 3. 5. The double-row woven electrodes (5 _B ) and (5 _C ) are electrically connected to each of the conductive wires (2) one by one, a plurality of them, or an appropriate combination of them alternately. The woven heating element according to claim 2 or 3, wherein 6. A warp group in which a plurality of conductive wires (2) for a heating element are arranged alternately or alternately with respect to a large number of warp insulating yarns (1), and a large number of these are woven by intersecting the warp group. In the weft insulating yarn (3), a plurality of conductive yarns (4) are juxtaposed and weaving electrodes (5) woven by intersecting the warp groups are double row (5 _B ), ( 5 _C ) and a weft yarn group which is arranged at a predetermined interval with a weft electrode group (5 _B ),
(5 _C ) and the weaving structure part (6) for weaving the weft consisting of an appropriate number of weft insulating threads (3) in the middle and front and rear parts
Part of the conductive wire (2) and part of the weft electrode (5 _B ) of one of the double-row weave electrodes (5 _B ) and (5 _C ) and part of the weft insulating yarn (3) Warp-insulating yarn (1) in combination with the one woven electrode (5 _B ) and part of the combined conductive wire (2)
One woven layer (7) electrically connected to and woven, and the other conductive wire (2) for the other woven electrode (5 _C ) and the remaining weft insulating yarn (3). The other woven layer (8) formed by combining the remaining warp insulating yarns (1) and electrically connecting the other woven electrode (5 _C ) and the remaining conductive wire (2). ) Is formed into a double-layered hollow weave, and an insulating sheet (9) is interposed between the two woven layers (7) and (8). 7. The woven heating element according to claim 6, wherein the double-row woven electrodes (5 _B ) and (5 _C ) are unit heating elements each having a predetermined length at both ends. Woven electrode 8. One of the double row (5 _B), (5 _C) is the one by one half to each electrical connection of the conductive line (2), the other woven electrode (5 _B), (5 The woven heating element according to claim 7, wherein _C ) is electrically connected to each one of the conductive wires (2), every plural wires or an appropriate combination of them alternately.