JP2023037528A - Expandable electric wire, processed fabric for clothing having expandable electric wire, clothing, system using clothing - Google Patents

Abstract

To provide an expandable electric wire having superior expansion durability and clothing having the expandable electric wire with regard to the thin expandable electric wire in which conductive fibers obtained by coating conductive material on fibers are wound around the circumference of an expandable core material and additionally an insulating coating part is wound around the circumference thereof.SOLUTION: The present invention is an expandable electric wire in which a conductive coating part 102 is wound around the circumference of an expandable core material 101 and additionally an insulating coating part 103 is wound around the circumference thereof. The expandable electric wire 100 satisfying 0.80<L2/L1<1.00 when length of the expandable electric wire is L1 and length after removing the insulating coating part 103 from the expandable electric wire is L2, and clothing, fabric for clothing, and system using clothing that have the expandable electric wire are provided.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to an elastic wire, a fabric for clothing provided with the elastic wire, clothing, and a system using the clothing.

2. Description of the Related Art In recent years, attention has been focused on smart apparel, which is clothing that obtains biometric information such as movement of the human body by forming an electronic circuit on a fabric, and provides electrical stimulation to the human body. The fabric can stretch, unlike conventional electronic boards. In addition, since clothes need to be washed, the wires laid on the fabric are required to have high elasticity and durability. Furthermore, when laying a plurality of electric wires on the fabric, the electric wires need to be coated with insulation because the electric wires may be short-circuited when they come into contact with each other, or they may be worn during washing.

Patent Document 1 discloses an elastic wire provided with a conductive coating formed in a stretchable braid or twill shape by using a plurality of twisted yarns of a plurality of silver-plated conductive fibers on the outer periphery of a stretchable core material. , and an elastic electric wire in which a plurality of strands of silver-plated conductive fibers are wound around an elastic core material. As for the insulating coating of the stretchable electric wire, a method of forming an insulating coating made of soft synthetic resin such as rubber or vinyl chloride on the outer periphery of the electric wire is described. Furthermore, as a general method of insulating and covering an elastic wire, a method of passing it through a bag-like elastic fabric is also known.

In Patent Document 2, a conductive coating portion in which a conductor wire composed of a bundle of fine wires is wound and/or wound around the outer periphery of an expandable core material, and an insulating fiber is further provided on the outer periphery of the conductive coating portion. A stretchable wire with wrapped insulation is described. Furthermore, as a means for improving the extensibility and stretching durability of the elastic wire of Patent Document 2, Patent Document 3 using a characteristic core material, a core material and a conductive coating or a conductive coating and an insulating coating Japanese Patent Application Laid-Open No. 2002-200003 discloses the frictional force of the part.

Regarding the method of forming the conductive coating portion of the stretchable electric wire in Patent Documents 2 to 4, it is described that the conductive coating portion is preferably wound with the conductor wire while pulling the stretchable core material. All the examples of Patent Documents 2 to 4 are described to be pulled by 2.0 to 2.6 times, and are taken up as products with high elasticity and stretch durability, while Patent Document 4 is compared. Example 3 is 1.3 times higher and is described as a representative example of low stretchability and stretch durability. By winding the conductor wire while pulling the stretchable core material, the conductive coated portion shrinks like a bellows when the pulled tension is released, making it possible to manufacture a highly stretchable electric wire. Therefore, it was common sense for those skilled in the art to wind a conductor wire while pulling a stretchable core material in order to form a highly stretchable wire.

Next, regarding the method of forming the insulating coating portion of the stretchable electric wire of Patent Documents 2 to 4, it is preferable to wind the insulating fiber while pulling the core material around which the conductor wire is wound, as in the case of the conductive coating portion. is described. All the examples of Patent Documents 2 to 4 describe pulling by 1.8 to 2.0 times, and the examples of Patent Document 5 should also be pulled by 1.5 to 3.0 times. is also described. On the other hand, Comparative Example 3 of Patent Document 4 is 1.2 times as large as the conductive coating, and is described as a representative example of low stretchability and stretch durability. Therefore, in order to form an electric wire with high elasticity, it is also possible to form an insulating coating by winding insulating fibers while pulling a core material around which a conductor wire is wound by at least 1.5 times. It was common knowledge for entrepreneurs.

JP-A-09-288912 WO2008/078780 Japanese Patent Application Laid-Open No. 2009-301880 JP 2010-40337 A Japanese Patent Laid-Open No. 61-290603

To improve the lifespan of smart apparel, as described above, stretchable wires with greater resistance to fabric stretching and laundering are needed. In addition, as the functions required for smart apparel increase, such as measuring the movement of the whole body and electrically stimulating muscles at the same time, it is necessary to be able to lay elastic wires at high density. Furthermore, when laying stretchable wires at a high density, it is necessary to lay soft stretchable wires because high rigidity of the stretchable wires adversely affects wearing comfort.

In Patent Document 1, resin is used as a material for insulating coating, but pinholes in forming the resin are a problem, and attempts to eliminate pinholes make the resin thick. For this reason, the thick resin makes the wires hard and less extensible, and the wires also become thicker, so that the wires cannot be laid at a high density. The insulation coating method, which is passed through a bag-like stretchable fabric, does not impede stretchability like resin does, but it requires a space for the bag to pass through, so there is a problem that the wire becomes thicker like resin. be. Further, in Patent Documents 2 to 4, since the insulating coating is formed by winding the insulating fiber around the outer periphery of the conductive coating, there is no problem with the wire becoming thicker. However, since the conductive covering part is made of a material that contains highly rigid fibers that are made by thinning the conductive materials themselves such as copper and aluminum, which are used as materials for conventional electric wires, smart apparel with high-density electric wires cannot be worn. I have a problem with comfort.

Therefore, as a problem to be solved by the present invention, a thin stretchable electric wire is obtained by winding a conductive fiber coated with a conductive material on the outer periphery of a stretchable core material, and further winding an insulating coating on the outer periphery of the conductive fiber. , to provide a stretchable electric wire which is more excellent in stretching durability, and clothing provided with the stretchable electric wire.

In order to solve the above problems, the present inventors conducted extensive studies and found that, while following the stretching of the stretchable core material when winding the conductive fiber, which was considered common sense in the prior art, They found that the stretch durability of the stretchable electric wire is dramatically improved by setting the core material around which the conductive fiber is wound to a low tension state in which the core material around which the conductive fiber is wound is hardly pulled when the insulating coating is wound. In addition, the inventors have confirmed that the greater the elongation ratio of the core material around which the conductive fibers are wound, the shorter the length of the electric wire after the insulating coating is removed, leading to the completion of the present invention.

An elastic wire according to one embodiment of the present invention is an elastic wire including a core material having elasticity,
A conductive coating part in which a conductive fiber, in which at least one fiber is coated with a conductive material, is wrapped around the core material directly or via another material to cover it;
Having an insulating covering portion in which at least one insulating fiber is wrapped around the conductive covering portion directly or via another material,
The length of the elastic wire is L1,
When the length after removing the insulating coating from the elastic wire is L2,
It is characterized by 0.80<L2/L1<1.00.

ADVANTAGE OF THE INVENTION According to one Embodiment of this invention, the clothing provided with the elastic|stretchable electric wire and said elastic|stretchable electric wire which were excellent in expansion-contraction durability can be provided.

The stretchable electric wire according to another embodiment of the present invention preferably satisfies 0.85<L2/L1<0.95.

According to another embodiment of the present invention, it is possible to provide a stretchable electric wire having further excellent stretchability and a garment provided with the stretchable electric wire.

An elastic wire according to another embodiment of the present invention is
When the length after removing the insulating coating portion and the conductive coating portion from the elastic wire is L3,
Preferably, 0.80<L3/L2<1.00.

An elastic wire according to another embodiment of the present invention is
Preferably, the difference between L2/L1 and L3/L2 is less than 0.10.

FIG. 1 is a schematic diagram of an elastic wire according to the present invention.

<Elastic electric wire>
As used herein, the term "electrical wire" generally means a wire-like member made of a conductive material and used to connect at least two points and transmit electricity. The electric wire of the present invention is an elastic electric wire having stretchability. As shown in FIG. 1, the stretchable electric wire 100 of the present invention includes at least a stretchable core material 101 and a conductive wire formed by winding a conductive fiber coated with a conductive material around the outer periphery of the core material 101. It comprises a covering portion 102 and an insulating covering portion 103 formed by winding an insulating fiber around the outer circumference of the covering portion 102 . The stretchable electric wire 100 of the present invention may have a change amount of 100% or more when stretched from the initial state.

In the stretchable electric wire 100 of the present invention, the stretchable core material 101 is pulled while the conductive fiber coated with the conductive material is wound around the fiber to form the conductive coating portion 102 . As a result, the stretched core material 101 tries to return to its original length, and the conductive covering portion 102 becomes a bellows shape, thereby forming a highly stretchable electric wire. Here, the extension ratio X1 of the core material 101 when the conductive fibers are wound is preferably 1.5 to 3.5 times, more preferably 1.9 to 2.5 times. As X1 increases, an electric wire having higher stretchability and stretch durability can be obtained. The conductive coating portion 102 may be a conductive fiber coated with a conductive material directly wrapped around the core material 101 for coating, or may be a conductive fiber coated with a conductive material. , another material, and wound around the core material 101 to cover it. The other material is not particularly limited, but may be a resin coating or a lubricating coating. The purpose of the resin coating is not particularly limited, but one example is to bundle and fix a plurality of core materials. The purpose of the lubricating coating is not particularly limited, but one example is to reduce the friction between the core material and the conductive coating.

In the stretchable electric wire 100 of the present invention, the insulating covering portion 103 is formed by winding the insulating fibers in a low tension state in which the core material 101 around which the conductive fibers are wound is hardly pulled. If the core material 101 around which the conductive fiber is wound is not pulled, it was expected that the stretch durability would be poor according to conventional wisdom. It was found that the If the elongation ratio X2 of the core material 101 around which the conductive fibers are wound when the insulating coating portion 103 is wound is too large, the stretch durability deteriorates as described above. Since the core material 101 becomes loose, it becomes difficult to wind the insulating fiber. Here, assuming that the length of the stretchable electric wire 100 of the present invention is L1, and the length of the stretchable electric wire 100 when the insulating coating 103 is removed is L2, the closer X2 is to 1.01, the more L2/L1 becomes a value close to 1.0, and L2/L1 becomes a value close to 0 as X2 increases. Regarding the stretch durability of the stretchable electric wire 100, L2/L1 is preferably 0.80 to 1.00, more preferably 0.85 to 0.95. X2 corresponding to this is preferably 1.01 to 1.5 times, more preferably 1.1 to 1.3 times. The insulating covering portion 103 may be formed by winding at least one insulating fiber directly around the conductive covering portion 102 to cover it, or at least one insulating fiber may be wrapped around the conductive covering portion 102 via another material. It may be wrapped around the conductive coating portion 102 to cover it. The other material is not particularly limited, but may be a resin coating or a lubricating coating. The purpose of the resin coating is not particularly limited, but one example is to enhance the waterproofness of the elastic wire. The purpose of the lubricating coating is not particularly limited, but one example is to reduce the friction between the conductive coating and the insulating coating.

<Core material>
The term "stretchable core material" as used herein means an elongated linear material that is stretchable. In some embodiments, the stretchable core may be an elastomer. In some embodiments, the elastomer is polyurethane, polytrimethylene terephthalate, natural rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, chloroprene rubber, nitrile rubber, polyisobutylene rubber, ethylene propylene rubber, chlorosulfonated polyethylene rubber, Acrylic rubber, fluorine rubber, epichlorohydrin rubber, and silicone rubber may be used. The thickness of the core material 101 may be 10 to 4000 dtex. The core material 101 may be used singly, in plurals, or by bundling different types. When a plurality of wires are bundled, the elongation load is increased and the elongation recovery property is improved.

<Fiber>
As used herein, the term "fiber" means long and thin filaments or bundles thereof. In some embodiments, the fibers may be synthetic fibers, natural fibers, or mixed fibers of multiple types. In some embodiments, the synthetic fibers are polyester fibers such as polyethylene terephthalate, polynaphthalene terephthalate, polyethylene naphthalate, polytrimethylene terephthalate, polyamide fibers such as nylon, acrylic fibers such as acrylonitrile, polyolefin fibers such as polyethylene and polypropylene. , rayon, cupra, regenerated cellulose fibers such as polynosic, cellulose-based semi-synthetic fibers such as acetate, protein-based semi-synthetic fibers such as Promix, polyurethane fibers, vinylon fibers, glass fibers, and carbon fibers. In some embodiments, natural fibers may be vegetable fibers such as cotton, hemp, linen, animal fibers such as wool, silk, cashmere. Fibers used for conductive fibers and insulating fibers are preferably chemical fibers, and polyester fibers and polyamide fibers are particularly preferred because of their high breaking strength when pulled. In some embodiments, the core 101 and fibers may be stretchable elastic fibers. In some embodiments, the elastic fibers may be elastic fibers, or a mixture of elastic and non-elastic fibers. In some embodiments, the elastic fibers may be the elastomeric fibers described above, crimped fibers that are stretchable by crimping. In some embodiments, the crimped fibers may be side-by-side conjugate fibers in which polymers of different shrinkage are naturally crimped during the spinning process. In some embodiments, the polymers used for side-by-side bicomponent fibers can be, for example and without limitation, polyesters, nylons, acrylics. The insulating fibers of the present invention may be the fibers described above. In some embodiments, the insulating fibers may be water-repellent treated with a fluorine-based water-repellent agent, a silicon-based water-repellent agent, or the like. The water-repellent finish can suppress deterioration of the insulating coating portion and the coated conductive coating portion due to perspiration and washing.

<Conductive fiber>
The conductive fiber of the present invention comprises a conductive coated fiber obtained by coating the above fiber with a conductive material. Wires containing conductive coated fibers, in which fibers are coated with a conductive material, are less rigid than conventional wires containing fibers made from the conductive material itself, such as copper and aluminum, which are used as materials for conventional wires. Clothing on which an electric wire containing conductive coated fibers coated with a material is laid is more comfortable to wear than an electric wire containing fibers made by thinning the conductive material itself such as copper or aluminum. The coating method of the conductive material may be plating, impregnation, coating, deposition, sputtering, lamination. Conductive fibers coated with a conductive material by plating or conductive coated fibers coated with a conductive material on polyester or nylon are comfortable to the skin because the conductive material is less likely to peel off due to rubbing, washing, or the like. In some embodiments, the conductive material that makes up the conductive fibers may be a metal, a metal compound, a carbon material, a conductive polymer, silver-silver chloride, or a combination of these different materials. Metals, alloys, and carbon materials are highly conductive. Conductive polymers are highly hydrophilic. Silver-silver chloride has a low contact impedance with a living body. In some embodiments, the metal is gold, silver, copper, aluminum, tin, zinc, nickel, titanium, platinum, stainless steel, beryllium copper, zirconium copper, brass, bronze, phosphor bronze, titanium copper, cupronickel, and the like. alloys, or combinations of these multiple different metals. Gold has high electrical conductivity and electromagnetic wave shielding properties. Silver has high antibacterial and deodorant properties in addition to its electrical conductivity and electromagnetic wave shielding properties. Copper, beryllium copper, zirconium copper, brass, bronze, phosphor bronze, titanium copper, and cupronickel have high workability for forming wires in addition to their electrical conductivity and electromagnetic wave shielding properties. In some embodiments, the metal compound may be copper sulfide, indium tin oxide, antimony tin oxide, zinc oxide, tin oxide, titanium oxide. In some embodiments, it may be a carbon material. Carbon materials are highly conductive. In some embodiments, the carbon material may be carbon black, graphite, graphene, carbon nanotubes, carbon fibers. Carbon black and graphite are low cost and highly conductive.

<Thread>
In some embodiments, the fibers, conductive fibers or insulating fibers described above may be yarns. In some embodiments, the yarn is a staple yarn spun from short fibers, a filament yarn made from long fibers, a single-twisted yarn in which one or more untwisted yarns are aligned and twisted in the same direction, two or more Plyed yarn twisted in the same direction and twisted in the same direction opposite to the twist direction of the single twisted yarn. A wall-twisted yarn twisted in the opposite direction, or a covering yarn obtained by winding one or more yarns around the core material 101 may be used. In some embodiments, the twist direction of the twisted yarn and the winding direction of the covering yarn may be rightward or leftward. Single-twisted yarns, plied-twisted yarns, wall-twisted yarns, and covering yarns have high durability against tension, compression, bending, and the like.

<Method of covering with fiber>
The conductive coated portion 102 of the present invention is formed by winding a conductive fiber coated with a conductive material. The insulating covering portion 103 is formed by winding insulating fibers. In some embodiments, the processing method for winding the conductive fiber coated with the conductive material or the insulating fiber may be a braiding process or a covering process. The braiding process may be a method of braiding fibers that are multiples of 4, such as 8 strands or 16 strands, half clockwise and half counterclockwise. The covering process may be a single covering that is wrapped in the S direction or the Z direction, or a double covering that is double wrapped in the S direction and the Z direction.

<Laying electric wires>
The elastic wire 100 of the present invention may be laid on or inside clothing, on or inside fabric, directly or via another layer. In some embodiments, the wire laying method may be gluing with adhesive, cord embroidery such as staggered cord embroidery or wound cord embroidery, pintuck stitching, or staggered stitching. In some embodiments, the wire may be a separate component that is removable from the garment. In some embodiments, wires may connect with electrodes, controllers, connectors, electronic boards, digital devices, analog devices, and power sources. As used herein, the term "controller" generally refers to a device that controls electrodes, digital devices, and analog devices connected to electric wires for electrical stimulation and measurement. generally refers to an electrical connection. In some embodiments, the garment may have a connector and the wire may connect with the controller via the connector.

<clothing>
As used herein, the term "user" generally means an animal or human who uses or wears clothing comprising the elastic wire 100 of the present invention. As used herein, "clothing" refers collectively to items worn by a user. The clothing provided with the stretchable wire of the present invention includes tops worn on the upper body (tops), bottoms worn on the lower body (bottoms), all-in-one with the upper body and lower body integrated, and a part of the body worn. It may be a device or the like attached to the body. In some embodiments, the top is a shirt, blouse, cut and sew, sweater, cardigan, camisole, tunic, crop, tank top, tube top, knit, vest, sweatshirt, hoodie, jersey, bra, jacket, coat, blouson, It may be a jumper, robe, cape, bolero, cloak, and the like. In some embodiments, the bottoms may be trousers, slacks, skirts, leggings, jerseys, pants, stockings, torenka, hakama, or the like. In some embodiments, the all-in-one may be overalls, dresses, dresses, leotards, rompers, bodysuits, zentai, and the like. In some embodiments, body parts may be hats, bands, supporters, gloves, belts, socks, shoes, sandals, boots, and the like.

<Fabric>
The clothing and the processed cloth for clothing provided with the stretchable electric wire of the present invention include a cloth. In some embodiments, fabrics may be wovens, knits, braids, laces, nonwovens, meshes, resin films, and the like. In some embodiments, the garment, fabric or stitching may be stretchable. Elastic stitches may be staggered stitches, overlock stitches, or flat seamer stitches. Stretchable clothing or fabrics, and clothing or fabrics with stretchable stitching, have high durability against pulling, compression, bending, etc., and followability to elongation. can enhance sexuality. By using clothing with high adhesion, for example, it is possible to efficiently apply electrical stimulation and accurately acquire data such as body movement, electrocardiogram, and myoelectricity.

<Electrode>
As used herein, the term "electrode" generally refers to any or a specific biological site, or a contact that connects to any or a specific biological site using a member made of a conductive material. Via the electrodes, it is possible to apply electrical stimulation to parts of a living body, and to acquire biological signals such as electrocardiogram and myoelectricity. In some embodiments, electrodes may be elastic. Due to the elasticity of the electrodes, the electrodes on clothing can easily adhere to curved skin. By bringing the electrodes into close contact with each other and performing electrical stimulation, pain due to electrical stimulation can be reduced, and efficient electrical stimulation can be performed. In some embodiments, a resilient electrode may include or be laminated with a resilient resin or sponge. In some embodiments, the elastomeric resin is natural rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, chloroprene rubber, nitrile rubber, polyisobutylene rubber, ethylene propylene rubber, chlorosulfonated polyethylene rubber, acrylic rubber, fluororubber, Epichlorohydrin rubber, urethane rubber, silicone rubber, and foamed rubber sponges made of these may be used. In some embodiments, the electrodes may be water absorbent. For example, without limitation, the contact impedance between the electrode and the skin tends to be stable due to moisture contained in the electrode, such as an electrode containing gel or sponge or laminated with gel or sponge.

<How to lay electrodes>
In some embodiments, electrodes may be laid on or in clothing, on or in fabric. In some embodiments, the method of laying the electrodes may be gluing, sewing. In some embodiments, the adhesive used to lay the electrodes may be stretchable. In some embodiments, the stitching may be elastic. In some embodiments, the elastic stitching may be a houndstooth stitch, an overlock stitch, or a flat seamer stitch. In some embodiments, electrodes laid using stretchable adhesive, electrodes laid with stretchable stitching, or fabrics or clothing on which these electrodes are laid are resistant to tension, compression, bending, and the like. , high followability to elongation. Electrodes laid using an adhesive containing a stretchable thermoplastic resin made of polyurethane, or fabrics or clothing on which these electrodes are laid, have high stretchability and recovery rate.

<Digital device>
The digital device connected to the elastic wire 100 of the present invention is an arithmetic processing unit, memory, communication device, clock, conversion device, motor driver, display device, digital sensor, or a combination of a plurality of these different digital devices. good too. In some embodiments, digital devices may be formed on electronic substrates. In some embodiments, one or more digital devices may be formed on an electronic substrate. In some embodiments, the electronic substrate may comprise a rigid substrate, a flexible substrate, a rigid-flexible printed circuit board. In some embodiments, a digital device or an electronic board with a digital device may be connected to electrical wires, either directly or through a connector.

<Digital sensor>
A digital device that connects with the elastic wire 100 of the present invention may be a digital sensor. In some embodiments, the digital sensor may be an inertial sensor, a magnetic sensor, a position sensor, a temperature sensor, a humidity sensor, an air pressure sensor, an optical sensor, or a combination of several different sensors. In some embodiments, the inertial sensor may be an acceleration sensor that detects acceleration and a gyro sensor that detects rotational speed. By using a 3-axis acceleration sensor and a 3-axis gyro sensor, 3-dimensional angular velocity and acceleration can be obtained, for example. In some embodiments, the magnetic sensor may be a geomagnetic sensor that detects absolute orientation. In some embodiments, the position sensor may be a GPS receiver, optical reflective range sensor, ultrasonic range sensor. In some embodiments, the temperature sensor may be a semiconductor temperature sensor, an infrared radiation temperature sensor. In some embodiments, the optical sensor may be a pulse wave, pulse, photoreflector for detecting blood oxygen saturation, luminance sensor, illuminance sensor.

<Analog sensor>
The analog device connected to the stretchable electric wire 100 of the present invention may be an analog sensor whose resistance, capacitance, etc. changes according to changes in physical quantity, and whose output such as current, voltage, etc. changes. An analog sensor is a device that can be easily measured with a simple circuit. In some embodiments, analog sensors may be strain sensors, pressure sensors, temperature sensors, humidity sensors, barometric pressure sensors, sound sensors, light sensors. In some embodiments, the strain or pressure sensor may be strain gauge resistive, semiconductor piezoresistive, capacitive, or silicon resonant. In some embodiments, the temperature sensor may be a thermistor, a resistance temperature detector, a thermocouple. In some embodiments, the sound sensor may be a microphone. In some embodiments, a method of processing a data signal from an analog sensor may include converting the data signal to digital data using an analog-to-digital conversion device prior to processing the data signal.

<Electrical stimulation and biological signal measurement>
Clothing provided with the stretchable electric wire 100 of the present invention may give electrical stimulation to the human body or measure biosignals. In some embodiments, the electrical stimulation is electrical muscle stimulation (EMS), transcutaneous electrical stimulation (TENS), microcurrent therapy (microcurrent, MENS), high voltage electrical stimulation, interferential current stimulation, Russian current stimulation, It may be steric wave stimulation, ultrashort wave therapy, negative charge therapy, functional electrical stimulation (FES), therapeutic electrical stimulation (TES). In some embodiments, the bioelectrical signal to be measured may be body movement, electrocardiogram, electroencephalogram, electromyogram, skin potential, ocular potential, and the like. In some embodiments, bioelectrical signals may be measured while applying electrical stimulation to the human body. In some embodiments, the electrodes described above may be used to provide electrical stimulation. In some embodiments, biosignals may be measured using the electrodes, digital sensors, and analog sensors described above.

<System>
In some embodiments, the garment may have a communication device. In some embodiments, the garment may be able to communicate with devices such as terminal devices such as smart phones and tablets, display devices, servers such as local servers and/or cloud servers via communication devices. In some embodiments, the garment may form a system with a display device and/or server or the like networked via a communication device. The system may comprise a communicable garment and networked terminals, display devices and/or servers. In some embodiments, the user may apply electrical stimulation to the human body or measure biosignals through the system. The user may apply electrical stimulation to the human body or measure biosignals using the terminal device, for example. That is, the garment of some embodiments can be a measurement garment, or an electrostimulation garment. Also, the system of some embodiments can be a measurement system, an electrical stimulation system.

Further aspects and advantages of the present disclosure will become readily apparent to those skilled in the art from the following detailed description, in which only exemplary embodiments of the present disclosure are shown and described. As will be realized, the disclosure is capable of other and different embodiments, and its several details are capable of modifications in various obvious respects, all without departing from the disclosure. Accordingly, the drawings and description are to be considered illustrative in nature and not restrictive.

While various embodiments of the present invention have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Numerous variations, modifications, and substitutions will occur to those skilled in the art without departing from the invention. It should be understood that various alternatives to the embodiments of the invention described herein may be used.

<Example 1>
Three 1120 denier polyurethane elastic fibers were prepared as the stretchable core material 101, and while being strongly stretched at an extension ratio X1 of 1.9 times, 16 110 dtex silver-plated nylon fibers were braided using a string making machine. An elastic electric wire A1 was produced. Next, an elastic electric wire B1 was prepared by braiding 32 polyester fibers of 167 dtex while setting the elastic electric wire A1 to a low tension state where the elastic electric wire A1 was hardly stretched at an extension ratio X2 of 1.2 times.

The stretchable electric wire B1 of Example 1 was cut into a length of 15 cm, and 2.5 cm portions on both ends were marked, and the distance between the two marks was L1=10 cm. While the elastic wire 100 is in a non-tensioned state, the insulating coating 103 of 10 cm between the two marks is removed, and then the length L2 of the removed portion is measured, and the length of the elastic wire 100 is measured. A rate of change Z1=L2/L1 was obtained. Next, after removing the conductive coating portion 102 between the two marks, the length L3 of the removed portion was measured to obtain the rate of change Z2=L3/L2 of the length of the stretchable electric wire 100. Furthermore, the difference |Z2-Z1| between Z1 and Z2 was obtained.

The stretchable electric wire B1 of Example 1 was cut to 10 cm, the resistance value at both ends was measured with a tester, and the initial resistance value R0 per 1 cm was calculated. Next, using a Dematcher cyclic fatigue tester (manufactured by Daiei Kagaku Seiki Seisakusho), the outside of the central 3 cm portion where the insulating coating 103 was not removed was chucked. Furthermore, the stroke was adjusted so that the chuck-to-chuck distance of 3 cm was 2.5 times as large as 7.5 cm, and a repeated 10,000-time tensile test was performed. One day after the chuck was removed, the resistance value at both ends of the 3 cm chuck portion was measured with a tester. R0 was calculated. The rate of change r is one of the indices representing the stretch durability of the stretchable wiring of the present invention.

<Example 2>
A stretchable electric wire A2 and a stretchable electric wire B2 of Example 2 were produced in the same manner as in Example 1 except that X1 was set to 2.5 times. The rate of change in length Z1, Z2 and |Z2-Z1| and the rate of change r in resistance before and after the 10,000 times tensile test were measured.

<Example 3>
An elastic wire A3 and an elastic wire B3 of Example 3 were produced in the same manner as in Example 2 except that tension was applied to X2 = 1.5 times and stretched, and in the same manner as in Example 1, The rate of change Z1, Z2 and |Z2-Z1| of the length of the stretchable electric wire 100, and the rate of change r of the resistance value before and after the 10,000 times tensile test were measured.

<Comparative Example 1>
A stretchable electric wire A4 and a stretchable electric wire B4 of Comparative Example 1 were produced in the same manner as in Example 1, except that they were stretched with a slightly strong tension of X2=1.6 times, and in the same manner as in Example 3, The rate of change Z1, Z2 and |Z2-Z1| of the length of the stretchable electric wire 100, and the rate of change r of the resistance value before and after the 10,000 times tensile test were measured.

<Comparative Example 2>
An elastic wire A5 and an elastic wire B5 of Comparative Example 2 were produced in the same manner as in Example 2, except that they were stretched with a slightly strong tension of X2=1.7 times, and in the same manner as in Example 3, The rate of change Z1, Z2 and |Z2-Z1| of the length of the stretchable electric wire 100, and the rate of change r of the resistance value before and after the 10,000 times tensile test were measured.

<Comparative Example 3>
A stretchable electric wire A6 and a stretchable electric wire B6 of Comparative Example 3 were produced in the same manner as in Example 2 except that they were stretched with a strong tension of X2=2.0 times, and stretched in the same manner as in Example 1. The rate of change Z1, Z2 and |Z2-Z1| of the length of the sex wire 100 and the rate of change r of the resistance value before and after the 10,000-time tensile test were measured.

Various measurement results of Examples 1 to 3 and Comparative Examples 1 to 3 are shown in Table 1. The rate of change r of the resistance value before and after the 10,000-time tensile test is small when 0.80<Z1<1.0, and the result is that r increases as Z1 decreases with 0.80 as the boundary. Got.

While some embodiments and examples of the present disclosure have been described above, these embodiments and examples are illustrative of the present disclosure. For example, each of the above embodiments has been described in detail for easy understanding of the present disclosure, and additional changes in dimensions, configurations, materials, and circuits may be made as necessary. Note that embodiments in which one or more of the features of the present disclosure listed above are arbitrarily combined are also included within the scope of the present disclosure. The claims encompass numerous variations to the embodiments without departing from the spirit of the disclosure. Accordingly, the embodiments and examples disclosed herein are presented for purposes of illustration and should not be considered limiting the scope of the disclosure.

100 elastic wire
101 Core material 102 Conductive coating 103 Insulating coating

Claims (10)

An elastic electric wire including a core material having elasticity,
A conductive coating part in which a conductive fiber, in which at least one fiber is coated with a conductive material, is wrapped around the core material directly or via another material to cover it;
Having an insulating covering portion in which at least one insulating fiber is wrapped around the conductive covering portion directly or via another material,
The length of the elastic wire is L1,
When the length after removing the insulating coating from the elastic wire is L2,
An elastic wire with 0.80<L2/L1<1.00. 2. The elastic wire of claim 1, wherein 0.85<L2/L1<0.95. When the length after removing the insulating coating portion and the conductive coating portion from the elastic wire is L3,
3. The elastic wire according to claim 1, wherein 0.80<L3/L2<1.00. 4. The elastic wire of claim 3, wherein the difference between L2/L1 and L3/L2 is less than 0.10. A processed fabric for clothing comprising at least the stretchable electric wire according to any one of claims 1 to 4. A garment using the processed fabric for clothing according to claim 5. Electrically stimulating clothing using the processed cloth for clothing according to claim 5, which provides electrical stimulation to the user's body. 6. Measurement clothing using the processed cloth for clothing according to claim 5, wherein at least a user's biological signal is measured. An electrical stimulation system for applying electrical stimulation to a user's body using the electrical stimulation clothing of claim 7. A measurement system for measuring a user's biological signal using the measurement clothing according to claim 8 .

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