JP2019129938A - Sensor sheet, and clothing with sensor - Google Patents

Abstract

To provide a sensor sheet capable of securing excellent touch, and producible by a simpler structure; and to provide clothing with a sensor.SOLUTION: A sensor sheet includes a sheet body, and an electrode part arranged on one side of the sheet body. In the sensor sheet, the sheet body is flexible, and the electrode part includes a linear structure in which a conductive thread having surface conductivity is arranged extendedly along one side of the sheet body in a desired pattern, and a part of the conductive thread is exposed on one side of the sheet body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sensor sheet and a garment with a sensor.

  2. Description of the Related Art In recent years, wearable devices that measure various biological information by wearing them on clothing have attracted attention. Such a wearable device includes a sensor sheet that is mounted on a garment and further includes an electrode disposed at a measurement point and a wiring member that electrically connects the wearable device to the garment. .

  Patent Document 1 discloses an invention relating to a bioelectrode (sensor sheet) configured to be able to acquire a desired bioelectric signal and clothing incorporating the bioelectrode. As a structure of the bioelectrode disclosed in Patent Document 1, an electrode portion formed as a fabric by processing a metal such as silver, copper, or gold into a thin line to give flexibility, and an adhesive on an attachment member. A structure that is fixed via is disclosed.

WO2016 / 93194

  However, since the electrode part provided in the bioelectrode described in Patent Document 1 is composed of a fabric formed of a thin metal wire as described above, there is a risk of deteriorating comfort. Moreover, when manufacturing a bioelectrode and clothing with the electrode, it is necessary to go through many steps, and there is a problem that it is difficult to manufacture easily.

  The present invention has been made to solve such problems, and it is an object of the present invention to provide a sensor sheet and a garment with a sensor that can ensure a good touch and can be manufactured with a simpler structure. And

  The object of the present invention is a sensor sheet comprising a sheet main body and an electrode part disposed on one side of the sheet main body, the sheet main body having elasticity, and the electrode part is It has a linear structure in which conductive yarns having surface conductivity are extended and arranged along one side of the sheet main body in a desired pattern, and a part of the conductive yarn is on one side of the sheet main body Achieved by the exposed sensor sheet.

  The sensor sheet preferably includes a reinforcing sheet member that partially covers the conductive yarn and is fixed to the sheet body.

  Moreover, it is preferable that the said reinforcement sheet | seat member is provided in the front-end | tip part of the said electrically conductive thread.

  Moreover, it is preferable that the one surface side of the said sheet | seat main body is formed from the resin raw material, and a part of outer surface of the said conductive thread is embed | buried and fixed to the said sheet | seat main body.

  Moreover, it is preferable that a part of the conductive yarn has a larger amount of burying in the sheet body than other parts.

  The conductive yarn is preferably a covering yarn obtained by winding a metal-coated yarn around a core yarn.

  Further, the above object of the present invention is achieved by a garment with a sensor in which the above sensor sheet is laminated on the garment.

  According to the present invention, it is possible to provide a sensor sheet and a garment with a sensor that can ensure a good touch and can be manufactured with a simpler structure.

It is a schematic structure top view of a sensor sheet concerning the present invention. It is schematic structure sectional drawing which shows the AA cross section in FIG. It is a schematic plan view showing a garment incorporating a sensor sheet according to the present invention. It is a schematic structure sectional view showing the modification of the sensor sheet concerning the present invention. It is explanatory drawing which shows an example of the preparation method of the sensor sheet which concerns on this invention. It is explanatory drawing which shows an example of the preparation method of the sensor sheet which concerns on this invention. It is a schematic structure top view which shows the modification of the sensor sheet which concerns on this invention. It is a schematic structure sectional view showing the modification of the sensor sheet concerning the present invention. It is explanatory drawing which shows an example of the preparation method of the sensor sheet | seat which concerns on FIG. It is a schematic structure top view which shows the modification of the sensor sheet which concerns on this invention. It is a heartbeat waveform measured with each sample of clothing with a sensor concerning the present invention.

  Hereinafter, a sensor sheet according to an embodiment of the present invention and a sensor-equipped garment formed by stacking the sensor sheet on the garment will be described with reference to the accompanying drawings. Note that the drawings are partially enlarged or reduced in order to facilitate understanding of the configuration. FIG. 1 is a schematic configuration plan view of a sensor sheet 1 according to the present invention, and FIG. 2 is a schematic configuration sectional view showing an AA cross section thereof. FIG. 3 is a schematic configuration diagram of a sensor-equipped garment 10 in which two sensor sheets 1 are arranged on the chest of a T-shirt so that an electrocardiogram can be detected. FIG. 3 shows the skin surface side.

  The sensor sheet 1 according to the present invention functions as, for example, a sensor that can be attached to clothing for a wearable device that measures biological information such as an electrocardiogram, a heartbeat waveform, an electromyogram, a heart rate, and an electroencephalogram.

  As shown in FIGS. 1 and 2, the sensor sheet 1 includes a sheet body 2 having elasticity, and a conductive portion 3 (an electrode portion 31 and a wiring portion 32) disposed on one surface side of the sheet body 2. It has. As shown in FIG. 1, the sheet body 2 is formed in a rectangular shape in plan view having a predetermined size. The sheet body 2 is preferably formed from a resin material, and is particularly preferably composed of a thermoplastic resin sheet.

  As the thermoplastic resin sheet, for example, a polyurethane sheet having a melting point of 90 to 220 ° C. and a thickness of 30 to 200 μm is suitably used. The sheet body 2 may be a composite of a plurality of thermoplastic resin sheets, as shown in the schematic cross-sectional view of FIG. In the configuration of FIG. 4, the sheet body 2 is formed as a laminate having a three-layer structure. It is also possible to make the melting points of the respective layers different. For example, the layer on the side close to the clothing to be worn (the layer on the side opposite to the one side where the conductive part 3 is arranged) and the layer on the one side where the conductive part 3 is arranged are, for example, 90 to 150 You may comprise from the low melting point polyurethane of ℃. By doing in this way, it is preferable at the point which can implement | achieve highly adhesive force with clothing simultaneously, implement | achieving high adhesive force of the sheet | seat main body 2 and the electroconductive part 3. FIG.

  Moreover, as a thermoplastic resin sheet which comprises the sheet | seat main body 2, thermoplastic elastomers, such as a polyester elastomer, a polyamide elastomer, and a polyolefin elastomer, can also be used besides a polyurethane sheet.

  The conductive part 3 is arranged on one side of the sheet body 2 having elasticity, and the conductive part 3 is composed of a single conductive thread 3a having surface conductivity, and its longitudinal region is The electrode part 31 and the wiring part 32 are comprised by dividing. Thus, since the electroconductive part 3 is comprised by the single electroconductive thread | yarn 3a, the electrode part 31 with which the electroconductive part 3 is provided is along the one surface of the sheet | seat main body 2 with the electroconductive thread | yarn 3a with a desired pattern. A linear structure that extends is provided. In this embodiment, as shown in FIG. 1, the electrode part 31 is comprised as a spiral pattern. The wiring portion 32 is configured as a conductive yarn portion disposed between the spiral electrode portion 31 and one side edge of the sheet body 2.

  A part of the conductive yarn 3a forming the electrode part 31 is exposed on one surface side of the sheet main body 2, and a desired bioelectric signal can be obtained by contacting the exposed part with the skin surface of the human body. It becomes possible.

  A part of the outer surface of the conductive yarn 3a forming the electrode part 31 and the wiring part 32 is buried and fixed in the sheet main body 2 as shown in the cross-sectional views of FIGS. In the present embodiment, the outer surface of the conductive yarn 3a facing the sheet main body 2 side is partially embedded in one surface of the sheet main body 2 in the entire longitudinal direction of the conductive yarn 3a.

  Further, a covering ground 4 for covering the conductive yarn 3a with a water repellent fabric, a waterproof fabric or a waterproof film is attached to a portion corresponding to the wiring portion 32 in the conductive portion 3 via a hot melt adhesive or the like. Further, it is not necessary to use a dedicated water-repellent fabric or waterproof fabric as the covering ground 4, and a fabric of the same material as the body fabric or a fabric of the same material as the water-repellent or waterproof body fabric may be used. A sheet material made of a resin material constituting the sheet body 2 described above may be used.

  Examples of hot melt adhesives include polyurethane hot melt resins, polyester hot melt resins, polyamide hot melt resins, EVA hot melt resins, polyolefin hot melt resins, styrene elastomer resins, and moisture curable urethane hot melts. Examples thereof include resins and reactive hot melt resins.

  Here, as the conductive yarn 3a constituting the conductive portion 3 (electrode portion 31 and wiring portion 32), for example, aluminum, nickel, copper, titanium, magnesium, tin, zinc, iron, silver, gold, platinum, vanadium, Threads formed from pure metals such as molybdenum, tungsten, and cobalt, alloys thereof, stainless steel, brass, etc., or metal wires in the shape of strips or conductive fibers such as carbon fibers can be used.

  In addition, as the conductive yarn 3a, a synthetic fiber, natural fiber or the like is used as a core, and a metal component is deposited on the core by wet or dry coating, plating, vacuum film formation, or other appropriate deposition methods. Coated yarn may be used. Although it is possible to adopt a monofilament for the core, a multifilament or spun yarn, which is an aggregate of a plurality of single fibers, is preferable to a monofilament, and further, a wooly processed yarn or a covering yarn such as SCY or DCY. Further, bulky processed yarn such as fluffed yarn is more preferable. Examples of metal components to be deposited on the core include pure metals such as aluminum, nickel, copper, titanium, magnesium, tin, zinc, iron, silver, gold, platinum, vanadium, molybdenum, tungsten, cobalt, alloys thereof, stainless steel Brass, etc. can be used.

  As the conductive yarn 3a, a covering yarn in which a synthetic fiber (for example, polyester fiber or nylon fiber) or natural fiber is used as a core yarn and the metal-coated yarn is wound around the core yarn can also be used.

  Further, from the viewpoint of preventing breakage of the electrode portion 31 and the wiring portion 32, it is preferable to impart stretchability to the conductive yarn 3a. Therefore, an elastic yarn such as polyurethane is used as a core yarn, and the metal-coated yarn is used as the core. A covering yarn wrapped around a yarn (elastic core yarn) and covered may be used as the conductive yarn 3a. Since the conductive yarn 3a having such a configuration itself expands and contracts in the longitudinal direction of the core yarn, the electrode portion 31 and the wiring portion 32 having a desired pattern shape expand and contract as the sheet body 2 expands and contracts. Thus, the handleability is improved without impairing the feeling of wearing, and the disconnection can be effectively prevented. In this way, when the conductive yarn 3a is configured as a covering yarn having stretchability, the covering may be a single covering or a double covering. Double covering is preferable from the viewpoint of suppressing a change in the electric resistance value associated with the elongation of the conductive yarn 3a. In particular, the winding direction of the lower winding yarn and the upper winding yarn is reversed (for example, when the lower winding is S winding). Is particularly preferred that the upper winding is Z winding or the lower winding is Z winding when the lower winding is Z winding).

  Further, the conductive yarn 3a may be configured as a twisted yarn obtained by twisting a plurality of the above metal-coated wires. In particular, triplet yarns can be preferably used as such fuel yarns.

  The fineness of the conductive yarn 3a is preferably 33 dtex to 1000 dtex. In particular, 70 dtex to 650 dtex are preferable. When the conductive yarn 3a is configured as a covering yarn in which a metal-coated yarn is wound around a core yarn, the fineness of the core yarn is preferably 310 dtex to 1880 dtex, and more preferably 620 dtex to 1240 dtex. When configured as a covering yarn, the core yarn is preferably wound in a stretched state (drafted). The fineness of the metal-coated yarn wound around the core yarn is preferably 33 dtex to 200 dtex, and more preferably 44 dtex to 90 dtex.

  Moreover, as the conductive yarn 3a, a predetermined portion of the conductive yarn 3a corresponding to the wiring portion 32 can be used which is previously coated with an insulating resin material. When such a conductive yarn 3a is used, the sensor sheet 1 can be configured by omitting the above-described covering 4. Here, as the insulating resin material, for example, polyurethane, polyvinyl chloride, polypropylene, polyethylene, nylon (nylon 6 or nylon 66, etc., which is formed by spinning a long chain continuous synthetic polymer by an amide bond. Polyamide-based synthetic fibers that have been converted into fibers), polyester, polyethylene terephthalate, polybutylene terephthalate, polyphenylene sulfide, polyether ether ketone, PFA, PVDF, ETFE and other fluorine resins, polystyrene, polycarbonate, polysulfone, polyether Examples include sulfone, formal (polyvinyl formal), butyral (polyvinyl butyral), and the like. In addition, the material which can be used as an insulating coating layer is not limited to these resin types.

  Moreover, the clothing 10 with a sensor which concerns on this invention is comprised by laminating | stacking the sensor sheet | seat 1 of the said structure on the surface of various clothing. As the garment to which the sensor sheet 1 is attached, one formed from a knitted fabric or a woven fabric having elasticity is preferably used. The clothing is not limited to a T-shirt (upper body wear) as shown in FIG. 3, and may be lower body wear such as pants or spats. In addition, the clothing in the present invention is a concept including an arbitrary fabric that comes into contact with the body surface, such as a hat, gloves, socks, headband, supporter, bandage, belt, and belly band.

  Moreover, the garment in this invention can also be comprised as a compression type which supports a motor function by supporting a muscle. Such compression-type garments include, for example, a knitted sheet (flat knitting), rib knitting (rubber knitting, milling knitting), pearl knitting, denby knitting (tricot knitting), atlas knitting, cord knitting, or the like mixed with polyurethane yarn. It can be composed of knitted fabrics such as changing tissue. Further, the entire garment need not be a compression type, and the electrode portion of the sensor sheet only needs to be in close contact with the skin. For example, the region where the sensor sheet 1 according to the present invention is disposed is configured as a compression type fabric. Or you may comprise the other part except the area | region in which the sensor sheet 1 which concerns on this invention is arrange | positioned as a compression-type cloth.

  Various methods can be cited as a method for stacking and attaching the sensor sheet 1 to the surface (skin surface) of the clothing. For example, the other surface side of the sensor sheet 1 and the skin surface of the clothing are opposed to each other. A method of laminating and fixing the sensor sheet 1 and clothing by laminating the sensor sheet 1 and melting and heat-sealing the other side of the sensor sheet 1 can be mentioned. Moreover, it is not limited to the lamination fixing by such heat fusion, When the other surface side of the sensor sheet 1 is a material having poor heat fusion property, for example, using a sheet-like hot melt adhesive, The sensor sheet 1 may be attached on the skin surface of the garment by heat-sealing, or the sensor sheet 1 may be sewn on the skin surface of the garment by sewing.

  As shown in FIG. 3, the sensor-equipped garment 10 includes a terminal portion 33 that is electrically connected to the wiring portion 32 in the sensor sheet 1. The terminal portion 33 is particularly configured as long as it functions as a connection portion that can input an electrical signal detected by the electrode portion 31 of the sensor sheet 1 to an external biological information measuring device (wearable device that measures biological information). Although not limited, for example, a male snap button made of a conductive material that can be electrically connected to an end of the wiring part 32 (an end opposite to the electrode part 31) can be used as the terminal part 33. When such a male snap button is used as the terminal portion 33, the fitting portion (protrusion portion) of the male snap button is configured to protrude to the front side of the clothing through the slit 71 formed in the clothing fabric. It is preferable to do. When the terminal portion 33 is constituted by the male snap button, the measurement wiring in the external biological information measuring device is electrically connected to the female snap button made of a conductive material, and the female snap button is connected to the male snap button. By fitting into the electric signal, the electric signal detected by the electrode part 31 can be taken out from the clothing via the terminal part 33 and detected.

  The sensor sheet 1 and the garment 10 with the sensor configured as described above can be manufactured as follows. In the following, a case will be described in which a sheet body 2 having a three-layer structure in which a polyurethane sheet having a high melting point of 150 to 220 ° C. is interposed between two polyurethane sheets having a low melting point of 90 to 150 ° C. .

  First, a mold 7 as shown in the schematic configuration plan view of FIG. The mold 7 is formed as a slit 71 having a desired pattern shape corresponding to the shape of the conductive portion 3 (the electrode portion 31 and the wiring portion 32) by hollowing out a predetermined portion of a metal plate such as stainless steel. It is made board material.

  Next, as shown in the schematic configuration plan view of FIG. 5 (b), a mold is prepared so that a predetermined slit pattern portion in the mold 7 is covered with an adhesive tape 72 whose one surface separately prepared constitutes an adhesive surface. Affix to frame 7. Then, as shown in the schematic configuration plan view of FIG. 5 (c), with the surface opposite to the surface to which the adhesive tape 72 is attached facing up, along the slit pattern formed in the mold 7, Conductive yarn 3a is disposed. Here, since the conductive yarn 3a is held by the adhesive surface of the adhesive tape 72, there is no deviation at that position.

  Next, as shown in the schematic cross-sectional view of FIG. 6 (a), the laminate composed of the adhesive tape 72, the mold 7 and the conductive yarn 3a is placed on one surface of the sheet body 2 having a three-layer structure. To do. At this time, the mold 7 to which the adhesive tape 72 is not attached is placed so that the surface side faces the one surface side of the sheet body 2. Thereafter, as shown in the schematic cross-sectional view of FIG. 6B, the conductive yarn 3a is heated and pressed with a heating plate 100 heated to, for example, 170 ° C. from the upper side.

  By this heating press, a part of the outer surface of the conductive yarn 3a forming the electrode part 31 and the wiring part 32 is thermally fused while being buried in the low melting point polyurethane sheet constituting one side of the sheet body 2. Fixed. After the heating press process is completed, the adhesive tape 72 and the mold 7 are removed, and the sensor sheet 1 according to the present invention is completed.

  Next, the sensor-coated garment 10 according to the present invention is completed by stacking and fixing the created sensor sheet 1 on the skin surface side of the garment. Here, the sensor sheet 1 is attached to the clothing by stacking the sensor sheet 1 so that the surface of the sensor sheet 1 on which the conductive yarn 3a is not disposed and the skin surface of the clothing face each other. The low melting point polyurethane sheet constituting the other surface side of the sheet body 2 is applied to the skin surface of the garment by heating and pressing from the surface side of the garment (the surface side opposite to the skin surface) with the heated plate heated to It is fixed by heat fusion.

  As described above, the sensor sheet 1 and the sensor-equipped garment 10 according to the present invention include the electrode portion 31 having a linear structure in which the conductive yarns 3a are arranged to extend along one surface of the sheet body 2 in a desired pattern. Since it comprises so that it may comprise, the structure of the sensor sheet | seat 1 can be simplified very much, and it becomes possible to manufacture more simply. Moreover, since the electrode part 31 has a linear structure, the contact area to the human body can be reduced as compared with the sensor sheet 1 or the garment 10 with the sensor provided with the electrode part 31 having a conventional planar structure. Can give a good comfort.

  In the above embodiment, a part of the outer surface of the conductive yarn 3a forming the electrode part 31 and the wiring part 32 is buried in the sheet body 2 as shown in the schematic sectional views of FIG. 2 and FIG. Therefore, the adhesion strength between the conductive yarn 3a and the sheet main body 2 can be increased, and the durability of the conductive yarn 3a can be effectively suppressed from peeling off from the sheet main body 2. It becomes possible.

  The sensor sheet 1 and the sensor-equipped garment 10 according to the embodiment of the present invention have been described above, but the specific configurations of the sensor sheet 1 and the sensor-equipped garment 10 are not limited to the above-described embodiment. For example, the sensor sheet 1 includes reinforcing sheet members 5a and 5b that are partially covered with the conductive yarn 3a constituting the electrode portion 31 and fixed to the sheet body 2 as shown in the schematic configuration plan view of FIG. You may comprise as follows. In FIG. 7, the reinforcing sheet member 5a that covers the tip of the conductive yarn 3a that constitutes the electrode part 31, and the electrode part 31 that has a spiral linear structure that covers a plurality of locations collectively. The sheet member 5b is provided. Moreover, in the structure shown in FIG. 7, although the aspect which covers several places with one reinforcement sheet | seat member 5b with respect to the electrode part 31 which has a spiral linear structure is shown, it is limited to such an aspect. Instead, a plurality of locations may be individually covered with separate reinforcing sheet members. Further, as the reinforcing sheet members 5a and 5b, the same material as the covering ground 4 covering the wiring portion 32 described above can be used. In order to fix the reinforcing sheet member on the sheet main body 2, the reinforcing sheet member can be attached via the above-described hot melt adhesive or the like. The reinforcing sheet members 5a and 5b are composed of the sheet material made of the resin material constituting the sheet body 2 described above, and the conductive yarn 3a constituting the electrode portion 31 is partially covered by heat-sealing. The sheet body 2 may be fixed.

  By providing such reinforcing sheet members 5a and 5b, the adhesion between the electrode portion 31 and the sheet body 2 can be further enhanced, and the conductive yarn 3a constituting the electrode portion 31 is peeled from the sheet body 2, It is possible to effectively prevent the dropout.

  Here, the place where the reinforcing sheet members 5a and 5b are attached is not particularly limited, but it is preferable that the reinforcing sheet members 5a and 5b are provided so as to cover at least the tip of the conductive yarn 3a constituting the electrode portion 31. Due to the structure of the electrode portion 31, the tip portion is easily peeled from the sheet body 2, and the durability of the electrode portion 31 can be further improved by providing a reinforcing sheet member at the tip portion of the conductive yarn 3 a. It becomes possible.

  In the above embodiment, a part of the outer surface of the conductive yarn 3a forming the electrode part 31 and the wiring part 32 is buried in the sheet body 2 as shown in the schematic sectional views of FIG. 2 and FIG. However, as shown in the schematic cross-sectional view of FIG. 8, the portion 3a1 of the conductive yarn 3a has a larger amount of burying in the sheet body 2 than the other portions 3a2. You may comprise so that it may become. Thus, by providing a part with a large amount of burying with respect to the surface of the sheet body 2 in this way, while preventing the contact area between the electrode part 31 and the human skin surface from being greatly reduced, the sheet body 2 and the electrode part 31 It becomes possible to increase the adhesion strength of the. 8 is a cross-sectional view corresponding to the AA cross section of FIG.

  Here, as shown in the schematic configuration sectional view of FIG. 8, a part of the conductive yarn 3 a constituting the electrode part 31 and the wiring part 32 is configured such that the amount embedded in the sheet body 2 is larger than the other part. To do this, for example, when a part of the outer surface of the conductive yarn 3a forming the electrode part 31 and the wiring part 32 is buried on one side of the sheet body 2 by heat pressing, In particular, it may be pressed strongly so as to increase the amount of burial. More specifically, for example, as shown in the schematic configuration plan view of FIG. 9A, the slits 71 formed in the mold 7 used in manufacturing the sensor sheet 1 are partially discontinuous. After forming the uncut portion 73 and arranging the conductive yarn 3a along the slit 71 so as to ride on the uncut portion 73 as shown in the schematic configuration plan view of FIG. As shown in FIG. 9 (c), the laminate composed of the adhesive tape 72, the mold 7 and the conductive yarn 3a is placed on the sheet main body 2 and heated and pressed with a heating plate, whereby the conductive yarn 3a. It becomes possible to deepen the amount of burial partially. When the formwork 7 having such an uncut part 73 is used, the uncut part in the formwork 7 when being heated and pressed by the heating plate 100 as shown in the schematic cross-sectional view of FIG. 73 presses the conductive yarn 3a directly. As a result, the conductive yarn portion that overlaps the uncut portion 73 in the mold 7 has a larger amount of burying in the sheet body 2 than the other conductive yarn portion that does not overlap the uncut portion 73. In addition, by forming the uncut portion 73 in the mold 7, it is possible to prevent the mold 7 from being bent and damaged by suppressing a decrease in bending strength of the mold 7 due to the formation of the slit 71. Workability at the time of manufacturing the sensor sheet 1 is improved.

  In the above embodiment, the conductive yarn 3a constituting the electrode portion 31 and the wiring portion 32 is configured to be heat-sealed and fixed on one surface of the sheet body 2, but such a configuration is used. It is not specifically limited to. For example, the electrode portion 31 having a linear structure having a desired pattern may be formed by sewing the sheet body 2 using the conductive yarn 3a. Thus, when forming the electrode part 31 and the wiring part 32 by sewing, since the conductive thread 3a is exposed on both sides of the sheet body 2, a thermoplastic resin sheet is separately provided on the other side of the sheet body 2. It is preferable that the conductive yarn 3a is exposed on one surface side. Here, the sewing method is not particularly limited. For example, it is preferable to form the electrode part 31 and the wiring part 32 by stretch sewing. In the case of stretch stitching, stretchability appears integrally with the sheet body 2 even if the conductive yarn 3a itself does not have stretchability. In addition, in this way, when the electrode part 31 and the wiring part 32 are formed by sewing, it is only necessary to perform stretch sewing in a predetermined pattern using a sewing machine. You will be able to respond to the occasion without coming. As the stretch stitch, any of overlock stitches, flat stitches, chain stitches or staggered stitches can be employed.

  Moreover, in the said embodiment, as shown in the schematic structure top view of FIG. 1, as a pattern of the electrode part 31, the spiral pattern is employ | adopted, However, As long as it has a linear structure, it is limited to such a pattern. Not. For example, as shown in the schematic configuration plan view of FIG. 10A, the electrode unit 31 may be configured as a single linear pattern. In FIG. 10A, the wiring portion 32 and the electrode portion 31 are configured to be a straight line. Further, as shown in the schematic configuration plan view of FIG. 10B, the electrode portion 31 may be configured as a wave pattern.

  Moreover, in the said embodiment, although the sensor sheet 1 is comprised so that it may be provided with the electroconductive part 3 comprised by the single electrically conductive thread 3a, it shows in the schematic structure top view of FIG.10 (c), for example. In this way, a plurality of pairs of conductive yarns 3a arranged in parallel to each other on the base end side may be arranged so as to branch in the middle. With such a configuration, the base end sides of the plurality of pairs of conductive yarns 3a are collected and connected to the terminal portion 33, thereby connecting the biological information measuring device and the wiring that is the plurality of pairs of conductive yarns 3a at one place. In addition, by arranging the plural pairs of conductive yarns 3a5 so as to branch on the way toward various measurement points, the tip side can be configured as an electrode unit 31 corresponding to various measurement points. .

  Here, the inventors of the present invention made a sample (sample A, sample B, and sample C) of the garment with sensor 10 according to the present invention and conducted an experiment to detect electrocardiogram information. This will be described below. The sample A includes the sensor sheet 1 including the spiral electrode unit 31 illustrated in FIG. 1, the sample B includes the sensor sheet 1 including the linear electrode unit 31 illustrated in FIG. As shown in FIG. 3, the sensor sheet 1 including the corrugated electrode portion 31 shown in FIG. 10B is attached to two chests on the skin side of the T-shirt. In addition, the garment 10 with a sensor which concerns on each of these samples is connected to the external heartbeat waveform measuring device via the terminal part 33 electrically connected to the edge part of the wiring part 32. FIG.

  In addition, the conductive portion 3 according to each sample is made of a polyurethane elastic long fiber having a fineness of 940 dtex as a core yarn, and a conductive yarn 3a formed by wrapping a nylon-plated nylon fiber (fineness of 90 dtex) twice around the core yarn. (DCY) is used. The conductive yarn 3a (DCY) is wound around the stretched core yarn twice so that the fineness of the conductive yarn 3a (DCY) is 540 dtex. Further, the sensor sheet 1 according to the sample A is formed using 36 cm of the conductive yarn 3 a having such a configuration. The sensor sheet 1 according to the sample B is formed using a 12 cm conductive yarn 3a, and the sensor sheet 1 according to the sample C is formed using a 22 cm conductive yarn 3a. In addition, the length of the wiring portion 32 in the conductive portion 3 is 3 cm in all the samples A to C, and the insulating covering ground 4 is disposed on the conductive yarn 3 a corresponding to the wiring portion 32.

  The detected heartbeat waveforms are shown in FIGS. 11A shows a heartbeat waveform related to sample A, and FIG. 11B shows a heartbeat waveform related to sample B. FIG. 11C shows a heartbeat waveform related to the sample C. As shown in FIGS. 11 (a) to 11 (c), it can be seen that each sample can detect the electrocardiogram / heart rate information very well.

DESCRIPTION OF SYMBOLS 1 Sensor sheet | seat 10 Clothing 2 with sensor Sheet | seat main body 3 Conductive part 3a Conductive thread 31 Electrode part 32 Wiring part 33 Terminal part 4 Covering ground 5a, 5b Reinforcement sheet member 7 Formwork 71 Slit 72 Adhesive tape 73 Uncut part

Claims (7)

A sensor sheet comprising a sheet body and an electrode portion disposed on one side of the sheet body,
The seat body has elasticity,
The electrode portion includes a linear structure in which conductive yarns having surface conductivity are arranged to extend along one surface of the sheet body in a desired pattern,
A part of the conductive yarn is a sensor sheet exposed on one side of the sheet body.   The sensor sheet according to claim 1, further comprising a reinforcing sheet member that partially covers the conductive yarn and is fixed to the sheet body.   The sensor sheet according to claim 2, wherein the reinforcing sheet member is provided at a distal end portion of the conductive yarn. One side of the sheet body is formed from a resin material,
The sensor sheet according to any one of claims 1 to 3, wherein a part of an outer surface of the conductive yarn is buried and fixed in the sheet body.   The sensor sheet according to claim 4, wherein a part of the conductive yarn is embedded in the sheet main body larger than another part.   The sensor sheet according to claim 1, wherein the conductive yarn is a covering yarn in which a metal-coated yarn is wound around a core yarn. A garment with a sensor, wherein the sensor sheet according to any one of claims 1 to 6 is laminated on the garment.

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