JP2007035475A - Plane heating element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plane heating element with stable quality detecting positional shift of an electrode and a polymer resistive element. <P>SOLUTION: The plane heating element 1 is provided with: an electric insulating base material 2; an electrode 3 formed on the electric insulating base material; a polymer resistive element 4 irradiating heat by being fed with power by the electrode 3; and a coating material 5 closely contacting the electric insulating base material, and also has a positional shift detecting means 7 electrically detecting relative positional changes at printing of the electrode 3 and the polymer resistive element 4. Thus, a plane heating element with stable quality surely detecting positional shift is provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a flexible and deformable thin sheet heating element that can be used as a heater when mounted on an appliance or the like.

  Conventionally, in the heat generating part of this type of planar heating element, a base polymer and a conductive material such as carbon black, metal powder, and graphite are dispersed in a solvent. (For example, see Patent Documents 1, 2, and 3).

  9 is a plan view of a conventional sheet heating element having a PTC characteristic, FIG. 10 is an enlarged plan view of the main part of FIG. 9, and FIG. 11 is a schematic sectional view of the sheet heating element when laminated. . As shown in FIG. 9, the sheet heating element 50 has positive and negative widths obtained by printing and drying a conductive paste on the outer surface of the upper surface of an electrically insulating base material 51 such as a polyester sheet. A large pair of main electrodes 52, 53 and a large number of narrow branch electrodes 52a, 53a led out alternately toward the electrodes 53, 52 opposed to the electrodes 52, 53, and power is fed from the branch electrodes 52a, 53a. A polymer resistor 54 obtained by printing and drying polymer resistor ink on the branch electrodes 52a and 53a and the upper surface of the substrate 51; and a covering material made of the same material as the substrate 51 55 is configured to cover and protect the main electrodes 52 and 53, the branch electrodes 52a and 53a, and the polymer resistor 54. The polymer resistor 54 is supplied with power from a large number of branch electrodes 52a and 53a to generate current and generate heat.

  When a polyester film is used as the base material 51 and the covering material 55, for example, a polyethylene-based heat-fusible resin (not shown) is bonded in advance to the covering material 55, and the pressure is applied while applying heat (heating time). Pressure), the base material 51 and the covering material 55 are joined via the heat-fusible resin. As a result, the main electrodes 52 and 53, the branch electrodes 52a and 53a, and the polymer resistor 54 are isolated from the outside world, and long-term reliability is imparted.

As a means for pressurizing at the time described above, FIG. 11 shows a schematic cross-sectional view when the covering material 55 is bonded together, but a laminator 58 comprising two heating rolls 56 and 57 rotating in the direction of the arrow is generally used. Is. The PTC characteristic is a resistance temperature characteristic in which the resistance value rises as the temperature rises, and when the temperature reaches a certain temperature, the resistance value increases abruptly. The polymer resistor 54 having PTC characteristics can provide a planar heating element having a self-temperature adjusting function.
Japanese Patent Laid-Open No. 56-13689 JP-A-6-96843 JP-A-8-120182

  Since the conventional planar heating element 50 generates heat at the portion of the polymer resistor 54 that overlaps the branch electrodes 52a and 53a, the electrodes 52 and 53 on the substrate 51 having the covering material 55 bonded to the upper surface are provided. If a large number of branch electrodes 52a, 53a and polymer resistor 53 are not printed with their positional relationship maintained correctly, it will not be possible to produce the amount of heat generated as designed. That is, between the multiple branch electrodes 52a and 53a and the polymer resistor 54, as shown in FIG. 10, the polymer resistor 54 is printed out of the normal position indicated by the alternate long and short dash line and printed by the position indicated by the dotted line. If this occurs, the misaligned portion 54a of the polymer resistor 54 that does not overlap the branch electrode 52a does not contribute to heat generation, and the misaligned portion 54a is wasted and the efficiency may deteriorate.

  Further, as described above, due to the positional deviation of the polymer resistor 54, one of the branch electrodes 53a having a relative relationship has been displaced, and this branch electrode is formed by printing and drying the silver paste. In such a case, there may be a problem that migration occurs between the main electrode and the branch electrode that are different in polarity from the tip 53b of the branch electrode 53a that is a silver electrode that does not overlap the polymer resistor 54.

  Further, it is considered that the above-described positional deviation is caused by the reduction in the size of the base material 51 at, for example, the central portion and the end portion.

  SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, the problem to be solved by the present invention is to provide a planar heating element having a stable quality by detecting positional deviation of electrodes and resistors.

  In order to solve the above problems, the planar heating element of the present invention is provided with a positional deviation detecting means for visually or electrically detecting a relative positional deviation between the electrode and the resistor. By this positional deviation detection means, the electrode formed by printing on the electrically insulating substrate and the printed over the electrode are detected, and the relative positional deviation of the resistor that is supplied with power and generates heat is detected. It can be made into a surface heating element of stable quality with no displacement in the body.

  According to the planar heating element of the present invention, the electrode and the resistor can be prevented from being misaligned, and a planar heating element with stable quality can be provided.

  According to a first aspect of the present invention, there is provided an electrically insulating base material, an electrode formed by printing on the electrically insulating base material, a resistor that is printed over the electrode, and that is supplied with heat from the electrode and generates heat, and the electrode and the resistor. And a covering material in close contact with the electrically insulating substrate, and provided with a displacement detecting means for visually or electrically detecting a relative displacement between the electrode and the resistor. .

  As a result, the relative positional deviation between the electrode and the resistor is electrically detected by the positional deviation detection means, so that it is possible to reliably detect the positional deviation without human error, and the dedicated position separate from the electrode and the resistor. By looking at the deviation detection means, the relative positional deviation between the electrode and the resistor can be detected, and it is easier to confirm than the judgment by directly looking at the electrode and the resistor. A stable planar heating element can be manufactured.

  In the second invention, in particular, the positional deviation detection means of the first invention is constituted by a plurality of positional deviation detection elements provided on the planar heating element, and conduction, non-conduction, or resistance value between the positional deviation detection elements. By detecting the conduction, non-conduction, or resistance value between multiple position deviation detection elements with a measuring instrument in the production process, for example, the position deviation can be detected accurately without oversight. Since the detection element detects in the same sheet heating element as the electrode and resistor whose position deviation is detected, the accuracy of position deviation detection can be improved, and a plurality of position deviation detection elements can be placed in various places on the sheet heating element. It is also possible to detect misalignment by positioning, and it is possible to detect not only misalignment but also misalignment direction, amount, etc. To become.

According to the third aspect of the present invention, in particular, the plurality of position shift detection elements constituting the position shift detection means of the second invention are formed as a resistor position shift detection element and a plurality of electrode position shift detection elements. It is possible to associate the position deviation detecting element for the body and the plurality of position deviation detecting elements for the electrodes with the electrode and the resistor whose position deviation is detected. For example, the position for the resistor is synchronized with the printing of the resistor. It is possible to print a plurality of positional deviation detection elements for electrodes in synchronization with the printing of the deviation detection elements and electrodes, so that it is possible to accurately detect the relative positional deviation between the electrodes and resistors, and for resistors It is also possible to individually change the position of the plurality of electrode position deviation detecting elements with respect to the position deviation detecting element, so that the position deviation including the direction and the amount can be detected with high accuracy. If with adjustment also facilitates the positional deviation direction adjustment.

  In the fourth invention, in particular, the plurality of electrode position deviation detecting elements and resistor position deviation detecting elements that constitute the position deviation detecting means of the third invention include a single resistor position deviation detecting element. A plurality of electrode displacement detection elements, each of which is formed in a plurality of small positions, and the plurality of electrode position detection elements are in different positions and separated from each other by a predetermined dimension on the outer periphery of the resistor position detection element; or It is arranged by overlapping predetermined dimensions.

  As a result, it is possible to expect the same effects as the above-described third invention, and it is possible to rationally arrange a plurality of small electrode positional deviation detecting elements with respect to one large resistor positional deviation detecting element. It is possible to effectively utilize the limited space of the sheet heating element, and the distance between the resistor position deviation detection element and the plurality of electrode position deviation detection elements is set to a predetermined dimension. Therefore, the positional deviation and its amount can also be detected. For example, if the manufacturing device for the planar heating element is provided with a positional deviation adjustment, the positional deviation adjustment becomes easy.

  In the fifth aspect of the invention, in particular, one large resistor position deviation detecting element and a plurality of small electrode position deviation detecting elements constituting the position deviation detecting means of the fourth invention include the plurality of electrode position deviation detecting elements. An element is arranged on the outer periphery of the resistor position deviation detecting element with a predetermined distance or overlapped by a predetermined dimension, and the plurality of electrode position deviation detecting elements are connected in series or in parallel to be conductive, non-conductive, or resistance value. It is configured to detect the positional deviation by detecting.

  As a result, it is possible to expect the same effect as the above-described fourth invention, as well as the conduction, non-conduction, or resistance value between each of the electrode position deviation detection elements having different arrangement positions with respect to the resistor position deviation detection element. If the position deviation direction, the position deviation, or the amount of position deviation is detected, and the manufacturing device of the sheet heating element is provided with the position deviation adjustment, the position deviation adjustment becomes easy.

  In the sixth aspect of the invention, in particular, a predetermined size and a predetermined size of the electrode position deviation detecting element and the resistor position deviation detecting element of the fourth or fifth invention are configured by the main electrode and the branch electrode. The position of the electrode between the electrode misalignment detection elements is set to be larger than the overlap margin of the tip of the branch electrode in the resistor superimposed on the branch electrode of the electrode and smaller than the interval L between the main electrode and the resistor. Since the relative positional deviation between the electrode and the resistor has already occurred when the deviation is detected, it is possible to reliably detect the positional deviation, and it is possible to eliminate the overlap between the main electrode and the resistor through which a large current flows, It is safe and the resistor can be used efficiently.

  In the seventh invention, in particular, the plurality of electrode positional deviation detecting elements according to any one of the third to sixth inventions are simultaneously printed with the same material as the electrode, and the resistor positional deviation detecting element is also the same as the resistor. By simultaneously printing and forming with the material, the positional deviation detecting element for resistor and the plurality of positional deviation detecting elements for electrode are printed in synchronism with the printing of the electrode and the resistive element for which positional deviation is detected, respectively. When the relative displacement between the electrode and the resistor occurs, the displacement between the plurality of electrode displacement detection elements and the resistor displacement detection element similarly occurs, so that it is possible to detect the displacement accurately. Further, it can be manufactured more easily than the case where a special material is used to provide a plurality of electrode positional deviation detecting elements and resistor positional deviation detecting elements.

In the eighth aspect of the invention, in particular, the positional deviation detecting means of any one of the first to seventh aspects is provided in the central portion of the planar heating element, so that the positional deviation detecting means is provided in the central part of the planar heating element. Therefore, it is possible to efficiently detect a positional shift in any direction.

  In the ninth aspect of the invention, in particular, the positional deviation detecting means according to any one of the first to eighth aspects is provided in an empty space of the planar heating element, so that the positional deviation detecting means is rational using the empty space. Can be installed.

  In the tenth aspect of the invention, in particular, the empty space of the sheet heating element of the ninth invention is made into a cut recess to be removed corresponding to the hanging part of the seat formed in the sheet heating element. As well as being able to expect the same effect as the invention of No. 9, since the cut concave portion to be removed is cut off, it is not necessary to display an explanation or the like indicating that it does not contribute to heating, and it becomes compact.

  In an eleventh aspect of the invention, in particular, the positional deviation detecting means of the first aspect is constituted by a plurality of positional deviation detecting elements provided on a planar heating element, and the positional deviation detecting element is disposed at the center. By disposing the resistor position deviation detection element between the deviation detection element and the other electrode position deviation detection element provided at a predetermined distance around it, the electrode and the resistor are separated from each other. A position deviation detecting means formed exclusively, and the position deviation detecting means is located between the electrode position deviation detecting element disposed at the center and the other electrode position deviation detecting element provided at a predetermined distance around the electrode position deviation detecting element. In addition, since the positional deviation detecting element for resistor is arranged, the positional deviation detecting element position for the electrode arranged at the center and the other positional deviation detecting element for electrode provided at a predetermined distance around it are arranged. Just measure one point of The positional deviation of all directions can be easily detected.

  The present invention is not limited to the present embodiment. Further, in the description of the present embodiment, the same reference numerals are given to the same configurations and the effects and the same description is not repeated.

(Embodiment 1)
1 is a plan view showing a sheet heating element according to Embodiment 1 of the present invention, FIG. 2 is a plan view showing an enlarged main part of the sheet heating element, and FIG. 3 is a sheet shape shown in FIG. FIG. 4 is a plan view showing a portion of the position deviation detecting means of the heating element, and FIG.

  In FIG. 1, a sheet heating element 1 is a pair of silver paste printed and dried on the top surface of a thin rectangular electrical insulating substrate 2 such as a polyester film laminated to a polyester nonwoven fabric (not shown). Electrically positive and negative electrodes) 3 and a polymer resistor 4 as a resistor formed by printing and drying polymer resistor ink so as to overlap the electrode 3. A thin-walled polyester film or the like formed in advance with an adhesive resin layer (not shown) such as an acrylic adhesive having adhesiveness with the electrode 3, the polymer resistor 4, and the electrically insulating substrate 2. A sheet heating element 1 is formed by laminating a covering material 5 such as a nonwoven fabric laminated with an electrically insulating overcoat material.

  The planar heating element 1 is used by being attached to a seat (not shown) and a backrest (not shown), which are seats of an automobile, as a heater for heating, and a hanging portion (not shown) of the seat and the backrest. In order to cope with this, a notch recess 6 in which one end portion, which is a place to be removed at the time of manufacturing the planar heating element, is opened is provided in the central portion along the longitudinal direction.

The electrode 3 has a pair of wide main electrodes (corresponding to the positive side and the negative side of the DC power source) so as to face each other, and the outer side in the longitudinal direction of the sheet heating element 1 and the outer side. A plurality of branch electrodes 3c, 3d are led out from the main electrodes 3a, 3b alternately toward the main electrode on the other side to form a comb shape as a whole. When the polymer resistor 4 disposed so as to overlap with the power is supplied from a large number of branch electrodes 3c and 3d, a current flows through the polymer resistor 4 to generate heat.

  As described above, the polymer resistor 4 is supplied with power from the multiple branch electrodes 3c and 3d of the main electrodes 3a and 3b constituting the electrode 3 and generates heat, so that the high resistance of the main resistor 3a and 3b and the branch electrodes 3c and 3d is high. Since the molecular resistor 4 exhibits a heat generation amount as originally designed, it is overprinted while maintaining the mutual positional relationship correctly. That is, as shown in FIG. 2, the polymer resistor 4 includes an overlap margin H with the tip of the branch electrodes 3c and 3d in the polymer resistor 4 superimposed on the branch electrodes 3c and 3d of the electrode 3, and the main electrode. 3a and 3b are printed on the electrically insulative base material 2 while maintaining an interval L.

  That is, the overlap margin H does not contribute to heat generation while taking into account a slight positional deviation between the main electrodes 3a and 3b and the branch electrodes 3c and 3d during printing on the electrically insulating substrate 2. In consideration of minimizing the material of the portion of the polymer resistor 4 (where it does not overlap the branch electrode), the distance L is also the main electrodes 3a, 3b and While taking into account a slight positional deviation with respect to the branch electrodes 3c and 3d, the main electrodes 3a and 3b through which a large current flows and the polymer resistor 4 are eliminated, thereby contributing to electrical safety and heat generation. This is set in consideration of reducing the material of the portion of the polymer resistor 4 that does not overlap (where it does not overlap with the branch electrode) as much as possible. Set larger dimensions It is.

  As described above, the planar heating element 1 is configured so that the main electrodes 3a and 3b, the branch electrodes 3c and 3d, and the polymer resistor 4 are overlapped as described above in order to exhibit the heat generation amount as originally designed. And printed on the electrically insulating base material 2 with a distance L between them by a plate of a manufacturing device (not shown) of the sheet heating element 1 and dried. Therefore, in the present embodiment, the main electrodes 3a and 3b and the branch electrodes 3c and 3d and the polymer resistor 4 are printed while maintaining the overlap margin H and the interval L due to an unexpected failure of the manufacturing equipment and expansion and contraction of the material in the manufacturing process. In other words, there is provided a positional deviation detecting means 7 for electrically detecting a relative positional deviation between the polymer electrodes 4 and the main electrodes 3a, 3b and branch electrodes 3c, 3d by printing.

  That is, as shown in FIGS. 1 and 3, the positional deviation detecting means 7 is an upper surface of the electrically insulating substrate 2 provided with the electrode 3 and the polymer resistor 4 for detecting positional deviation, and has a planar shape. An empty space of the heating element 1, in the present embodiment, is provided at the position of the cut recess 6 to be removed corresponding to the suspended part of the seat, and further at the center of the planar heating element 1.

  The positional deviation detecting means 7 has a plurality of electrode positional deviation detecting elements 7a, 7b, 7c, 7d as a plurality of positional deviation detecting elements and a resistor positional deviation detecting element 7e, and a plurality of electrode positions. The displacement detecting elements 7a to 7d are for detecting a positional deviation when the main electrodes 3a and 3b and the branch electrodes 3c and 3d are printed. One resistance positional deviation detecting element 7e is used for printing the polymer resistor 4. The position shift detection element 7e, the position shift detection elements 7b-7c, the position shift detection elements 7b-7c, the position shift detection elements 7c-7d, and the position via the resistor position shift detection element 7e. When a state of no conduction (hereinafter referred to as non-conduction) occurs between any of the deviation detection elements 7d-7a, the positional deviation of the electrode 3 and the polymer resistor 4 from the normal position is detected.

As described above, the positional deviation detecting means 7 uses the vacant space of the planar heating element 1 to provide rationally and the positional deviation detecting element 7e detects the positional deviation detecting element 7e for the resistor from the viewpoint of the positional deviation detecting function. One quadrangle larger than the elements 7a to 7d is formed, one of the electrode positional deviation detecting elements 7a to 7d is formed into four small squares, and the electrode 3 and the polymer resistor 4 are relatively When printing is performed at the normal position, electrode position shift detection elements 7a to 7d are formed on the four corners of the resistor position shift detection element 7e so as to overlap each other by a predetermined dimension P, and the predetermined dimension P is formed. Is larger than the overlap margin H with the tip of the branch electrodes 3c and 3d in the polymer resistor 4 which is superimposed on the branch electrodes 3c and 3d of the main electrodes 3a and 3b, and between the main electrodes 3a and 3b and the polymer resistor 4 Set the relationship smaller than the interval L. .

  Accordingly, when the electrode 3 and the polymer resistor 4 are displaced relative to each other from the normal position during printing, the plurality of electrode position detecting elements 7a to 7d and the resistor position detecting element 7e are used. Non-conduction occurs between the position shift detection elements 7a-7b, between the electrode position shift detection elements 7b-7c, between the electrode position shift detection elements 7c-7d, and between the electrode position shift detection elements 7d-7a. It is set to.

  A method of manufacturing the plurality of electrode position shift detection elements 7a to 7d and the resistance position shift detection element 7e will be described together with the method of manufacturing the planar heating element 1 described above. 7d, when the main electrodes 3a, 3b and the branch electrodes 3c, 3d are formed on the upper surface of the electrically insulating substrate 2 by printing and drying a silver paste, the main electrodes 3a, 3b and the branch electrodes 3c are simultaneously formed in the same manner. 3d, and the resistor displacement detecting element 7e is printed on the main electrodes 3a and 3b and the branch electrodes 3c and 3d, which are printed on the upper surface of the electrically insulating substrate 2 and dried. When the polymer resistor 4 is formed by printing and drying the polymer resistor ink while maintaining the distance L and the overlap margin H on the upper surface of the electrically insulating substrate 2, the polymer resistor 4 is simultaneously formed by the same method. Same material and for each electrode And forms while maintaining the overlapping of the location deviation detecting elements 7a~7d and predetermined dimension P on four corners.

  The positional deviation measuring means 8 as a jig for measuring the presence / absence of positional deviation detection of the positional deviation detecting means 7 having the above-described configuration includes the main electrodes 3a and 3b, the branch electrodes 3c and 3d, and the polymer resistor 4 having an electrically insulating base. As shown in FIG. 4 at the same time as the manufacturing process of the planar heating element 1 in which a DC voltage is applied to the main electrodes 3a and 3b in a state of being printed and dried on the upper surface of the material 2 to perform a heating test of the polymer resistor 4. Four measurement terminals 8a to 8d are brought into electrical contact with the respective electrode position deviation detecting elements 7a to 7d, and the electrode position deviation detecting elements 7a, 7b, 7c and 7d are connected in series to perform one measurement. It can be configured to measure the presence or absence of non-conduction.

  In the figure, 9 indicates that when the sheet heating element 1 is installed in a cushioned seat or the like, the sheet heating element 1 is easily deformed and does not cause wrinkles in the same manner as a seat deformed by an external force. For this purpose, a large number of slits open at one end are provided.

  The operation and action of the positional deviation detection means 7 of the planar heating element 1 in the above embodiment will be described. The main electrodes 3a and 3b and the branch electrodes 3c and 3d are formed on the upper surface of the electrically insulating base material 2 by printing and drying a silver paste, and at the same time for the electrodes 3 The positional deviation detecting elements 7a to 7d are formed, and then the main electrodes 3a and 3b and the branch electrodes 3c and 3d on the upper surface of the electrically insulating substrate 2 and the upper surface of the electrically insulating substrate 2 are shown in FIG. The polymer resistor 4 is formed by printing and drying the polymer resistor ink while maintaining the distance L and the overlap margin H, and at the same time, the resistor material is positioned by using the same material in the same method. The deviation detecting element 7e is formed.

  Then, the heat resistance test is performed by energizing the polymer resistor 4 from the branch electrode 3c of the main electrode 3a and the branch electrode 3d of the main electrode 3b which have been printed and dried, and at the same time, the electrode 3 and the polymer resistor 4 The positional deviation detecting means 7 detects a printing deviation from the normal position, and through this detection, the positional deviation measuring means 8 measures whether there is any positional deviation, and the non-defective sheet heating element 1 is produced.

In particular, in the present embodiment, the main electrodes 3a and 3b, the branch electrodes 3c and 3d, and the polymer resistor 4 are printed on the electrically insulating substrate 2 while maintaining the overlap margin H and the interval L shown in FIG. Since the positional deviation detecting means 7 electrically detects whether or not there is a relative positional deviation from the normal position, it is possible to reliably detect the positional deviation without human error. Then, it is easier to confirm than directly judging by looking at the electrode 3 and the polymer resistor 4, and therefore, it is possible to manufacture the planar heating element 1 having a stable quality with no positional deviation.

  Further, in the present embodiment, the positional deviation detection means 7 is constituted by a plurality of electrode positional deviation detection elements 7a to 7d and a resistor positional deviation detection element 7e as a plurality of positional deviation detection elements, and a plurality of electrode positions. When the electrode 3 and the polymer resistor 4 are displaced from the normal position, the displacement detecting elements 7a to 7d and the resistor positional deviation detecting element 7e are respectively connected via the resistor positional deviation detecting element 7e. As positional deviation detection, any of the positional deviation detecting elements 7a-7b, between the electrode positional deviation detecting elements 7b-7c, between the electrode positional deviation detecting elements 7c-7d, and between the electrode positional deviation detecting elements 7d-7a is used. Since non-conduction occurs, for example, the position shift can be detected accurately without oversight by automatically detecting it in the production process by the position shift measuring means 8 incorporated in the manufacturing device of the planar heating element.

  The positional deviation detection element 7 is provided on the electrically insulating base material 2 of the same planar heating element 1 as the main electrodes 3a and 3b and the branch electrodes 3c and 3d and the polymer resistor 4 from which the positional deviation is detected. In addition, since the resistor position shift detection element 7e and the plurality of electrode position shift detection elements 7a to 7d are respectively associated with the electrode 3 and the polymer resistor 4 that detect the position shift, the position shift detection is performed. Increases accuracy.

  Further, in the present embodiment, one resistor positional deviation detecting element 7e is formed large and one electrode positional deviation detecting element 7a-7d is formed small by four, and the electrode positional deviation detecting elements 7a-7d are formed. Since each of them is arranged so as to be overlapped by a predetermined dimension P on the square corner of the resistor position deviation detecting element, the electrode position deviation detecting elements 7a to 7e are compared with one large resistor position deviation detecting element 7e. The four small 7d can be rationally arranged, and can be installed by effectively utilizing the cut recess 6 to be removed, which is a space of a limited planar heating element.

  And each via the resistor position deviation detecting element 7e, between the electrode position deviation detecting elements 7a-7b, between the electrode position deviation detecting elements 7b-7c, between the electrode position deviation detecting elements 7c-7d, If the positional deviation measuring means 8 can determine which electrode positional deviation detecting element between the positional deviation detecting elements 7d-7a is non-conductive, the positional deviation and its direction can be detected. If the manufacturing device for the planar heating element is provided with a positional deviation adjustment, the positional deviation adjustment can be easily performed.

  Further, in the present embodiment, in the positional deviation detection means 7, each of them is interposed between the electrode positional deviation detecting elements 7a-7b, between the electrode positional deviation detecting elements 7b-7c via the resistor positional deviation detecting element 7e, Since the circuit between the electrode position shift detecting elements 7c-7d and the circuit between the electrode position shift detecting elements 7d-7a are connected in series to detect the position shift, the position shift is detected by the position shift measuring means 8 once. Can be confirmed.

  In the present embodiment, the electrode position deviation detecting elements 7a to 7d and the resistor position deviation detecting element 7e are overlapped at four corners of the resistor position deviation detecting element 7e as shown in FIG. Since the dimension P is larger than the overlap margin H with the tip ends of the branch electrodes 3c and 3d in the polymer resistor 4 in FIG. 2 and smaller than the distance L between the main electrodes 3a and 3b and the polymer resistor 4. When the positional deviation is detected between the electrode positional deviation detecting elements 7a-7b, 7b-7c, 7c-7d, 7d-7a, the relative positional deviation at the time of printing of the electrode 3 and the polymer resistor 4 occurs. Therefore, it is possible to detect the positional deviation with certainty, and it is safe because the main electrodes 3a and 3b through which a large current flows are not in direct electrical contact with the polymer resistor 4. The material can be used efficiently.

  Further, in the present embodiment, the plurality of electrode positional deviation detecting elements 7 a to 7 d are printed with the same method and the same material as the electrode 3, and the resistor positional deviation detecting element 7 e is simultaneously used with the polymer resistor 4. Since the same method and the same material are used for printing, when the relative displacement between the electrode 3 and the polymer resistor 4 occurs, the plurality of electrode displacement detection elements 7a to 7d and the resistor displacement detection elements 7e In the same way, misalignment occurs between them, so that misalignment can be detected with high accuracy, and a special material is used to provide a plurality of misalignment detecting elements 7a to 7d for electrodes and a misalignment detecting element 7e for resistors. It can be manufactured more easily than the case.

  In the present embodiment, since the displacement detection means 7 is provided in the center of the sheet heating element 1, the electrode and the polymer resistor 4 are printed and dried on the electrically insulating base material 2. Even if there is reduction or the like, it is possible to efficiently detect a positional shift in any direction on average.

  In the above-described embodiment, the electrode positional deviation detecting elements 7a to 7d and the resistor positional deviation detecting element 7e are formed in a quadrangular shape, but the shape is not limited thereto. The positional deviation detecting means 7 detects the positional deviation at the time of printing of the electrode 3 and the polymer resistor 4 by electrical non-conduction, but it can also be detected visually. The reason is that the molecular resistor 4 is provided as a dedicated positional deviation means rather than directly.

(Embodiment 2)
FIG. 5 is a block diagram showing a positional deviation detecting means for the planar heating element in the second embodiment of the present invention. In the present embodiment, only the configuration of the positional deviation detecting means 70 is different from that of the invention of the first embodiment, and the other configurations and operational effects of the planar heating element 1 and the positional deviation measuring means 8 are the same. This will be described with reference to FIGS.

  The positional deviation detection means 70 detects a relative positional deviation from the normal position during printing of the electrode 3 and the polymer resistor 4, and the electrode 3 and the polymer resistor as in the first embodiment. 4 is the upper surface of the electrically insulating substrate 2 provided, and in the empty space of the sheet heating element 1, in the present embodiment, the position of the cut recess 6 to be removed corresponding to the suspended portion of the seat, Furthermore, it is located at the center of the sheet heating element 1.

  As shown in FIG. 5, the positional deviation detecting means 70 includes two electrode positional deviation detecting elements 70 a 1 and 70 a 2 as two or more positional deviation detecting elements, two electrode positional deviation detecting elements 70 b 1 and 70 b 2, 2. Each of the electrode position shift detection elements 70c1 and 70c2, the two electrode position shift detection elements 70d1 and 70d2, and the resistor position shift detection element 70e, and a plurality of electrode position shift detection elements 70a1 and 70a2. 70d1 and 70d2 are for detecting a positional deviation during printing of the main electrodes 3a and 3b and the branch electrodes 3c and 3d. One resistor positional deviation detecting element 70e is a position during printing of the polymer resistor 4. This is for detecting a deviation.

  Further, the position deviation detecting means 70 is connected between the electrode position deviation detecting elements 70a1 and 70b2, between the electrode position deviation detecting elements 70b1 and 70c2, and the electrode position deviation detecting element 70c1− via the resistor position deviation detecting element 70e. When the conductive state occurs between 70d2 and between any of the electrode positional deviation detecting elements 70d1 and 70a2, the positional deviation and the positional deviation direction from the normal position during printing of the electrode 3 and the polymer resistor 4 are shown in FIG. Can be detected as indicated by dotted lines.

The resistor positional deviation detecting element 70e is formed into one rectangular shape larger than the electrode positional deviation detecting elements 70a1, 70a2 to 70d1, and 70d2, and one of the electrode positional deviation detecting elements 70a1, 70a2 to 70d1, and 70d2 is formed. Are formed into four small squares, and when the electrode 3 and the polymer resistor 4 are relatively printed at normal positions, the four positions of the resistor position deviation detecting element 70e are respectively set to predetermined values. Two electrode position detecting elements 70a1 and 70a2, two electrode position detecting elements 70b1 and 70b2, two electrode position detecting elements 70c1 and 70c2, and two electrodes arranged apart from each other by a dimension P Polymer misregistration element formed by printing and drying the position misalignment detecting elements 70d1 and 70d2 for use and superposing the predetermined dimension P on the branch electrodes 3c and 3d of the main electrodes 3a and 3b Branch electrodes 3c in greater than overlap space H between the tip of the 3d, the main electrode 3a, is set to the distance L is smaller than the relationship between 3b and polymer resistor 4.

  Accordingly, when the electrode 3 and the polymer resistor 4 are displaced from their normal positions during printing, the plurality of electrode position detection elements 70a1, 70a2 to 70d1, and 70d2 and the resistor position detection element 70e, respectively, Via the resistor position deviation detecting element 70e, between the electrode position deviation detecting elements 70a1 and 70b2, between the electrode position deviation detecting elements 70b1 and 70c2, between the electrode position deviation detecting elements 70c1 and 70d2, and between the electrode position deviation detecting elements 70c1 and 70d2. 70d1-70a2 is set to conduct.

  The positional deviation measuring means 8 measures continuity corresponding to the functions between the electrode positional deviation detecting elements 70a1, 70a2, 70b1, 70b2, 70c1, 70c2, 70d1, and 70d2.

  In addition, the electrode position detection elements 70a1, 70a2, 70b1, 70b2, 70c1, 70c2, 70d1, and 70d2 are small in the same method and the same material at the same time when printing and drying the main electrodes 3a and 3b and the branch electrodes 3c and 3d. The resistor position deviation detecting element 70e is formed by printing and drying simultaneously with the same method and the same material when the polymer resistor 4 is printed and dried.

  In the present embodiment, since the basic operation and action and effect of the positional deviation detection means 70 are the same as those of the positional deviation detection means 7 described in the first embodiment, they are used and different points will be described. After printing and drying on the electrically insulating substrate 2, the polymer resistor 4 is energized from the branch electrode 3c of the main electrode 3a and the branch electrode 3d of the main electrode 3b to conduct a heat generation test. The positional deviation detecting means 70 detects a relative positional deviation from the normal position during printing of the molecular resistor 4, and through this detection, the positional deviation measuring means 8 measures whether there is any positional deviation, and the non-defective surface heat generation. Body 1 is produced.

  In particular, in the present embodiment, two electrode position detecting elements 70a1, 70a2 to 70d1, and 70d2 across the four corners of the resistor position detecting element 70e are respectively set to a predetermined dimension P. For example, when the relative displacement from the normal position during printing of the electrode 3 and the polymer resistor 4 is in the upper right direction on the paper surface of FIG. A relative positional deviation also occurs between 70e and the two electrode positional deviation detecting elements 70a1, 70a2-70d1, and 70d2.

  Then, the positional deviation detection means 70 causes the positional deviation detection element 70e for resistance state to cause a positional deviation in the upper right direction indicated by the dotted line in FIG. 5, and the positional deviation detection element 70b1 for the electrode between the electrode positional deviation detection elements 70a1 and 70b2. -It is detected that continuity has occurred between 70c2, and through this detection, the positional deviation measuring means 8 confirms the positional deviation and the positional deviation direction of the upper right direction, and the manufacturing device for the planar heating element is provided with positional deviation adjustment. In this case, the positional deviation can be easily adjusted.

(Embodiment 3)
FIG. 6 is a block diagram showing a positional deviation detecting means for a planar heating element in Embodiment 4 of the present invention. In the present embodiment, only the configuration of the positional deviation detecting means 71 is different from that of the first embodiment, and the other configuration and operation effect of the planar heating element 1 and the positional deviation measuring means 8 are the same. 2 and will be described with reference to FIG.

  The positional deviation detection means 7 detects a relative positional deviation from the normal position during printing of the electrode 3 and the polymer resistor 4, and as in the first embodiment, the electrode 3 and the polymer resistor. 4 is the upper surface of the electrically insulating substrate 2 provided, and in the empty space of the sheet heating element 1, in the present embodiment, the position of the cut recess 6 to be removed corresponding to the suspended portion of the seat, Furthermore, it is located at the center of the sheet heating element 1.

  As shown in FIG. 6, this positional deviation detecting means 71 includes four small electrode positional deviation detecting elements 71a, 71b, 71c, 71d as a plurality of positional deviation detecting elements, and three elements, outer, intermediate and inner. The set includes four resistor position deviation detecting elements 71e1, 71e2, 71e3 as a set, and the electrode position deviation detecting elements 71a to 71d are arranged from the normal positions when the main electrodes 3a, 3b and the branch electrodes 3c, 3d are printed. One of the resistor position deviation detecting elements 71e1 to 71e3 is for detecting a position deviation from the normal position when the polymer resistor 4 is printed. .

  Then, the four electrode position detecting elements 71a to 71d are formed into small squares with the same method and the same material at the same time when the main electrodes 3a and 3b and the branch electrodes 3c and 3d are printed and dried. The four resistor position deviation detecting elements 71e1 to 71e3 are formed in the same method and with the same material at the same time when the polymer resistor 4 is printed and dried. Both ends of the electrode position deviation detecting elements 71a to 71d arranged at the corners are formed by being printed and dried, and the resistor position deviation detecting elements 71e1 to 71e3 have the same resistance value.

  Therefore, in the plurality of electrode positional deviation detecting elements 71a to 71d and the resistor positional deviation detecting elements 71e1 to 71e3, the electrode 3 and the polymer resistor 4 are relatively moved from the normal position to, for example, one of up, down, left and right directions. When the positional deviation is caused, the positional deviation is caused in the same manner.

  When the electrode 3 and the polymer resistor 4 are displaced from their normal positions, for example, in any of the top, bottom, left and right directions on the paper surface of FIG. 6, the position for the resistor between the electrode position deviation detecting elements 71a-71b is obtained. Each side D of the displacement detection elements 71e1 to 71e3, each side A of the resistor position shift detection elements 71e1 to 71e3 between the electrode position shift detection elements 71b to 71c, and a resistor between the electrode position shift detection elements 71c to 71d The internal resistor is caused by a positional shift at any one of the sides B of the position shift detecting elements 71e1 to 71e3 for the electrodes and each side C of the position shift detecting elements 71e1 to 71e3 for the resistor between the electrode position shift detecting elements 71d to 71a. As a result, the resistance value of the position shift detection element 71e1 for intermediate use, the position shift detection element 71e2 for intermediate resistor, or the position shift detection element 71e3 for external resistor does not work. There is no resistance due to lower than the set value the resistance or non-conductive, is set to allow detection of the positional deviation and positional deviation amount.

  The positional deviation measuring means 8 measures the resistance value and the absence of conduction corresponding to the functions between the electrode positional deviation detecting elements 71a, 71b, 71c, 71d.

  In the present embodiment, since the basic operation and action and effect of the positional deviation detection means 71 are the same as those of the positional deviation detection means 7 described in the first embodiment, they are used and different points will be described. After printing and drying on the electrically insulating substrate 2, the polymer resistor 4 is energized from the branch electrode 3c of the main electrode 3a and the branch electrode 3d of the main electrode 3b to conduct a heat generation test. The positional deviation detecting means 71 detects a relative positional deviation from the normal position during printing of the molecular resistor 4, and through this detection, the positional deviation measuring means 8 measures whether there is any positional deviation, and the non-defective surface heat generation. Body 1 is produced.

In particular, in the present embodiment, the positional deviation detection means 71 performs relative printing during printing between the main electrodes 3a and 3b and the branch electrodes 3c and 3d and the polymer resistor 4 in the left direction on the paper surface of FIG. If there is a misalignment, a relative misalignment also occurs between the electrode misalignment detecting elements 71a to 71d and the four resistor misalignment detecting elements 71e1 to 71e3. Of the resistor position deviation detecting elements 71e1 to 71e3 of A, the resistor position deviation detecting element 71e1 inside the side C is disengaged between the electrode position deviation detecting elements 71a to 71d, and the resistor outside the side A The positional deviation detecting element 71e3 is out of the electrode positional deviation detecting elements 71b-71c, and the resistance deviation is changed or non-conducted. Through this detection, the positional deviation measuring means 8 confirms the positional deviation and its amount. If manufacturing equipment with positional deviation adjustment Jo heating element can easily be its positional deviation adjustment.

  Further, if there is a relative positional deviation during printing between the main electrodes 3a, 3b and branch electrodes 3c, 3d and the polymer resistor 4 in the left direction on the paper surface of FIG. Similarly, among the resistor position shift detecting elements 71e1 to 71e3, the resistor position shift detecting elements 71e1 and 71e2 between the inner side and the middle of the side C are separated from between the electrode position shift detecting elements 71a to 71d, and the sides The position deviation detection elements 71e3 and 71e2 for the resistor between the outer side and the middle of A are separated from between the electrode position deviation detection elements 71b and 71c, and the resistance value largely changes or becomes non-conductive due to non-conduction, and the above-described positional deviation amount A larger positional shift can be detected.

(Embodiment 4)
FIG. 7 is a block diagram showing a positional deviation detecting means for a planar heating element in Embodiment 4 of the present invention. In the present embodiment, the configuration of the positional deviation detecting means 72 is different from that of the first embodiment, and the other configuration and operation effect of the planar heating element 1 and the positional deviation measuring means 8 are the same. 2 and will be described with reference to FIG.

  The positional deviation detection means 72 detects a relative positional deviation from the normal position during printing of the electrode 3 and the polymer resistor 4, and as in the first embodiment, the electrode 3 and the polymer resistor. 4 is the upper surface of the electrically insulating substrate 2 provided, and in the empty space of the sheet heating element 1, in the present embodiment, the position of the cut recess 6 to be removed corresponding to the suspended portion of the seat, Furthermore, it is located at the center of the sheet heating element 1.

  As shown in FIG. 7, the positional deviation detecting means 72 includes four electrode positional deviation detecting elements 72a, 72b, 72c, and 72d as a plurality of positional deviation detecting elements, and six resistor positional deviation detecting elements. 72e1, 72e2, 72e3, 72e4, 72e5, 72e6, and electrode positional deviation detection elements 72a to 72d are for detecting positional deviations during printing of the main electrodes 3a, 3b and branch electrodes 3c, 3d. One of the resistor position shift detection elements 72e1 to 72e6 is for detecting a position shift during printing of the polymer resistor 4.

  The electrode positional deviation detecting elements 72a and 72b are made longer than the electrode positional deviation detecting element 72b and arranged opposite to each other, and the electrode positional deviation detecting elements 72c and 72d detect the positional deviation for electrodes. For the six resistors, the elements 72a and 72b are opposed to each other in the vertical direction, and the main electrodes 3a and 3b and the branch electrodes 3c and 3d are simultaneously printed and dried with the same method and the same material when printing and drying. The positional deviation detecting elements 72e1 to 72e6 have the same resistance value, and both ends are arranged so as to overlap the electrode positional deviation detecting elements 72a and 72b, and at the same time when printing and drying the polymer resistor 4, It is formed by printing and drying with the same material.

  Accordingly, the plurality of electrode positional deviation detecting elements 72a to 72d and the resistor positional deviation detecting elements 72e1 to 72e6 are, for example, any one of, for example, upper, lower, left and right relative to the normal position when the electrode 3 and the polymer resistor 4 are printed. When a positional shift occurs in one direction, a relative positional shift occurs in the same manner.

    For example, when the electrode 3 and the polymer resistor 4 are relatively displaced upward on the paper surface of FIG. 7, the resistor positional displacement detection elements 72e1 to 72e6 of the positional displacement detection means 72 are also displaced upward. The first resistor positional deviation detecting element 72e1 is detached from the electrode positional deviation detecting element 72a and is in midway electrical contact with the upper electrode positional deviation detecting element 72c, so that the electrode positional deviation detecting elements 72a-72b. On the other hand, conduction between the electrode position shift detection elements 72b-72c occurs, and the relative position shift of the electrode 3 and the polymer resistor 4 and the position shift in the upward direction can be detected. It is configured.

  In addition, the resistance value between the electrode position deviation detecting elements 72a and 72b does not change in the downward position deviation as opposed to the upward position deviation described above, but the sixth resistor position deviation detecting element 72e6 is in the middle. Is in contact with the electrode positional deviation detecting element 72d, conduction occurs between the electrode positional deviation detecting elements 72b-72d, and the relative positional deviation and the downward positional deviation during printing of the electrode 3 and the polymer resistor 4 are caused. It can be detected.

  Further, if the electrode 3 and the polymer resistor 4 are displaced to the left on the paper surface of FIG. 7 when there is a relative displacement during printing, the resistor displacement detectors 72e1 to 72e6 of the displacement detector 72 are also left. The resistance value between the electrode position deviation detection elements 72a and 72b disappears, and the gap between these elements becomes non-conductive, and the position deviation can be detected.

  Further, in contrast to the above-described leftward position shift, the rightward position shift also eliminates the resistance value between the electrode position shift detection elements 72a and 72b, and becomes non-conductive between them, so that the position shift can be detected. It is configured.

  The positional deviation measuring means 8 measures the resistance value and the continuity corresponding to the functions between the electrode positional deviation detecting elements 72a, 72b, 72c, 72d.

  In the present embodiment, since the basic operation and action and effect of the positional deviation detection means 72 are the same as those of the positional deviation detection means 7 described in the first embodiment, they are used and different points will be described. After printing and drying on the electrically insulating substrate 2, the polymer resistor 4 is energized from the branch electrode 3c of the main electrode 3a and the branch electrode 3d of the main electrode 3b to conduct a heat generation test. The positional deviation detecting means 72 detects a relative positional deviation from the normal position during printing of the molecular resistor 4, and through this detection, the positional deviation measuring means 8 measures whether there is any positional deviation, and the non-defective surface heat generation. Body 1 is produced.

  In particular, in the present embodiment, the electrode position deviation detecting elements 72a and 72b are made longer than the electrode position deviation detecting elements 72b and are arranged on the left and right sides to face each other, so that the electrode position deviation detecting elements 72c and 72d are opposed to each other. Is formed by printing and drying simultaneously with the same method and the same material when printing and drying the main electrodes 3a and 3b and the branch electrodes 3c and 3d. The six resistor position shift detecting elements 72e1 to 72e6 have the same resistance value, and both ends thereof are overlapped with the electrode position shift detecting elements 72a and 72b, and the polymer resistor 4 is printed and dried. At the same time, it is formed by printing and drying with the same method and the same material at the same time.

  Accordingly, the plurality of electrode position detecting elements 72a to 72d and the resistor position detecting elements 72e1 to 72e6, which are the position detecting means 72, are relative to each other from the normal position when the electrode 3 and the polymer resistor 4 are printed. In addition, for example, when a positional shift occurs in any of the upper, lower, left and right directions, a relative positional shift occurs, and as described above, a change in the resistance value between the electrode positional shift detection elements 72a and 72b, The position shift and the position shift direction can be detected by conduction between the position shift detection elements 72b and 72d and between the electrode position shift detection elements 72c and 72b, and the position shift and the direction can be confirmed by the position shift measuring means 8 through this.

  And if the manufacturing apparatus of a planar heating element is with position shift adjustment, the position shift adjustment can also be performed easily.

(Embodiment 5)
FIG. 8 is a block diagram showing a positional deviation detecting means for a planar heating element in Embodiment 5 of the present invention. In the present embodiment, the configuration of the positional deviation detecting means 73 is different from that of the first embodiment, and the other configuration and operation effect of the planar heating element 1 and the positional deviation measuring means 8 are the same. 2 and will be described with reference to FIG.

  The positional deviation detection means 73 detects a relative positional deviation from the normal position during printing of the electrode 3 and the polymer resistor 4, and as in the first embodiment, the electrode 3 and the polymer resistor. 4 is the upper surface of the electrically insulating substrate 2 provided, and in the empty space of the sheet heating element 1, in the present embodiment, the position of the cut recess 6 to be removed corresponding to the suspended portion of the seat, Furthermore, it is located at the center of the sheet heating element 1.

  The positional deviation detecting means 73 is formed in a ring shape as a plurality of positional deviation detecting elements provided on the electrically insulating base material 2 and is arranged annularly with outer and inner electrode positional deviation detecting elements 73a and 73b arranged concentrically. The resistor position deviation detecting element 73c is formed between the outer electrode position deviation detecting element 73a and the inner electrode position deviation detecting element 73b, and the inner electrode position deviation detecting element 73b. One resistor displacement detection element 73c is disposed in contact with the contact, and the displacement can be detected electrically or visually.

  In other words, the electrode positional deviation detecting elements 73a and 73b are for detecting positional deviation during printing of the main electrodes 3a and 3b and the branch electrodes 3c and 3d, and one resistor positional deviation detecting element 73c is a polymer. This is for detecting a positional deviation during printing of the resistor 4.

  Then, the electrode displacement detection elements 73a and 73b are formed by simultaneously printing and drying the same method and the same material in the shape of an ellipse when the main electrodes 3a and 3b and the branch electrodes 3c and 3d are printed and dried. Further, the resistor position deviation detecting element 73c is printed in an elliptical annular shape in contact with the outer periphery of the inner electrode position deviation detecting element 73b by the same method and the same material at the same time when the polymer resistor 4 is printed and dried. The electrode position deviation detecting elements 73a and 73b are set in a non-conductive state at the normal positions when the electrodes 3 and the polymer resistor 4 are printed.

  If the electrode 3 and the polymer resistor 4 are misaligned from the normal positions during printing, the electrode position misalignment detecting elements 73a and 73b and the resistor position misalignment detecting element 73c are also relatively positioned during printing. It is configured such that a displacement occurs, and it can be detected that there is a displacement due to electrical conduction between the electrode displacement detection elements 73a and 73b. Of course, the electrode positional deviation detecting elements 73a and 73b and the resistor positional deviation detecting element 73c are arranged annularly and concentrically, and have a dedicated form separate from the electrode 3 and the polymer resistor 4 from which positional deviation is detected. And can be detected visually.

  In the present embodiment, since the basic operation and action and effect of the positional deviation detection means 73 are the same as those of the positional deviation detection means 7 described in the first embodiment, they are used and different points will be described. After printing and drying on the electrically insulating substrate 2, the polymer resistor 4 is energized from the branch electrode 3c of the main electrode 3a and the branch electrode 3d of the main electrode 3b to conduct a heat generation test. The positional deviation detecting means 73 detects a relative positional deviation from the normal position during printing of the molecular resistor 4, and through this detection, the positional deviation measuring means 8 measures whether there is any positional deviation, and the non-defective surface heat generation. Body 1 is produced.

  In particular, in the present embodiment, the positional deviation detection means 73 is, for example, a relative position during printing between the main electrodes 3a, 3b and the branch electrodes 3c, 3d and the polymer resistor 4 in the left direction on the paper surface of FIG. If there is a misalignment, a relative misalignment occurs during printing between the electrode misregistration detection elements 73a and 73b and the resistor misregistration detection element 73c. As shown by the dotted line, the element 73c is displaced in the left direction, and is electrically connected between the electrode position deviation detecting elements 73a and 73b. Through this, the position deviation measuring means 8 can confirm the position deviation. And if the manufacturing apparatus of a planar heating element is with position shift adjustment, the position shift adjustment can also be performed easily.

  Further, the position shift in all directions can be made only by measuring the one position between the electrode position shift detecting elements 73a and 73b by the position shift measuring means 8, and the measurement is simplified.

  Further, even if the positional deviation is not confirmed by the positional deviation measuring means 8 as described above, the electrode 3 and the polymer resistor 4 are detected separately, and the positional deviation detecting elements 73a and 73b for electrodes are provided. Since the resistor positional deviation detecting elements 73c are arranged in a ring and concentrically, there is an advantage that the positional deviation can be easily confirmed visually, and the direction of the positional deviation can be recognized.

  In the present embodiment, the positional deviation detection element for resistor is arranged between the positional deviation detection elements for electrode, and the positional deviation is detected by measuring between the positional deviation detection elements for electrode. This is configured in reverse, but an electrode position deviation detecting element is arranged between the resistor position deviation detecting elements, and the position deviation is detected by measuring between the resistor position deviation detecting elements. In addition, the positional deviation detecting means is described as being provided at one position in the center of the sheet heating element 1, but this is because a plurality of position deviation detecting means are provided at appropriate positions on the sheet heating element 1. The configuration of each of the other parts may be any configuration as long as the object of the present invention is achieved.

  As described above, the sheet heating element according to the present invention can prevent the electrode and the resistor from being misaligned, can be a sheet heating element having a stable quality, and requires heating, such as an automobile seat and a handle. Can be used for instruments.

The top view which shows the planar heating element in Embodiment 1 of this invention The enlarged plan view of the principal part of the planar heating element in Embodiment 1 The block diagram which shows the position shift detection means of the planar heating element in Embodiment 1 Explanatory drawing at the time of position shift measurement by the position shift detection means of the sheet heating element in the first embodiment The block diagram which shows the position shift detection means of the planar heating element in the same Embodiment 2. The block diagram which shows the position shift detection means of the planar heating element in the same Embodiment 3. The block diagram which shows the position shift detection means of the planar heating element in the same Embodiment 4. The block diagram which shows the position shift detection means of the planar heating element in Embodiment 5. Plan view showing a conventional planar heating element The top view which expands and shows the principal part of the same planar heating element Schematic configuration diagram showing when the covering material of the same heating element is bonded

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Planar heating element 2 Electrically insulating base material 3 Electrode 3a, 3b Main electrode 3c, 3d Branch electrode 4 Polymer resistor (resistor)
DESCRIPTION OF SYMBOLS 5 Cover material 6 Notch recessed part 7,70,71,72,73 Position shift detection means 7a-7d Position shift detection element for electrodes 70a1, 70a2 Position shift detection elements for electrodes 70b1, 70b2 Position shift detection elements for electrodes 70c1, 70c2 Electrodes Position shift detection element 70d1, 70d2 Position shift detection element for electrode 7e Position shift detection element for resistor 70e Position shift detection element for resistor
71a-71d Electrode position detecting element 71e1-71e3 Resistor position detecting element 72a-72d Electrode position detecting element 72e1-72e6 Resistor position detecting element 73a, 73b Electrode position detecting element 73e Resistor Position shift detection element H Overlap L Interval P Predetermined dimensions

Claims (11)

An electrically insulating substrate, a plurality of electrodes formed by printing on the electrically insulating substrate and the electrode, printed over the electrode, a resistor that is fed by the electrode and generates heat, and covers the electrode and the resistor, A planar heating element comprising a covering material in close contact with the electrically insulating base material, and provided with a positional deviation detecting means for visually or electrically detecting a relative positional deviation between the electrode and the resistor. The position shift detection means has a plurality of position shift detection elements provided on the sheet heating element, and detects position shift by conduction or non-conduction between the position shift detection elements or a resistance value. Planar heating element. The planar heating element according to claim 2, wherein the plurality of position shift detection elements constituting the position shift detection means include a plurality of electrode position shift detection elements and a resistor position shift detection element. A plurality of positional deviation detection elements for electrodes and a positional deviation detection element for resistors constituting the positional deviation detection means are larger by one, and the number of positional deviation detection elements for electrodes is smaller by a plurality. 4. The plurality of electrode positional deviation detecting elements, which are respectively formed, are arranged at different positions, and are arranged on the outer periphery of the resistor positional deviation detecting element at a predetermined distance or overlaid by a predetermined dimension. Planar heating element. One large resistor position shift detection element and a plurality of small electrode position shift detection elements constituting the position shift detection means are arranged on the outer periphery of the resistor position shift detection element. It is arranged to be separated by a predetermined dimension or overlapped by a predetermined dimension, and configured to detect a positional deviation by detecting conduction or non-conduction or a resistance value by connecting the plurality of electrode position deviation detection elements in series or in parallel. The planar heating element according to claim 4. The predetermined distance between the electrode position deviation detection element and the resistor position deviation detection element or a predetermined overlapped dimension is the tip of the branch electrode in the resistor overlaid on the branch electrode of the electrode composed of the main electrode and the branch electrode. The planar heating element according to claim 4 or 5, wherein the sheet heating element is set to be larger than an overlap with the portion and smaller than an interval L between the main electrode and the resistor. The positional deviation detecting means is formed by simultaneously printing the electrode positional deviation detecting element with the same material as the electrode and simultaneously printing the resistor positional deviation detecting element with the same material as the resistor. The planar heating element of any one of Claims 1. The planar heating element according to any one of claims 1 to 7, wherein the positional deviation detection means is provided at a central portion of the planar heating element. The planar heating element according to any one of claims 1 to 8, wherein the positional deviation detection means is provided in an empty space of the planar heating element. The planar heating element according to claim 9, wherein the empty space of the planar heating element is a cut recess to be removed corresponding to a suspended portion of a seat formed in the planar heating element. The positional deviation detecting means is composed of a plurality of positional deviation detecting elements provided on the planar heating element, and the positional deviation detecting element is provided at a predetermined distance around the electrode positional deviation detecting element disposed in the center. 2. A planar heating element according to claim 1, wherein a resistor positional deviation detecting element is disposed between the other electrode positional deviation detecting elements.