JP2019047962A - Body mounting structure - Google Patents

Abstract

To provide a body mounting fixture easily fixable to a specific position of a body, capable of acquiring and measuring biological information of the body in a natural state, and excellent also in design.SOLUTION: There is provided a body mounting fixture having a plurality of electrodes in contact with the skin of a wearer. The body mounting fixture has a crosswise fabric part passing one shoulder of the wearer, and not having a crosswise fabric part passing the other shoulder. Preferably, the crosswise fabric part has length adjustment means.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a body wearing device, and more particularly, to a body wearing device for obtaining and measuring body biological information.

  Increases the safety of exercise by acquiring and measuring biological information such as heart rate, pulse rate, respiratory rate, blood pressure, body temperature, and myoelectricity during exercise, reviewing exercise content, and adjusting exercise load Or improve exercise efficiency. Further, the biological information of the body can be used, for example, for treatment or care of a sick person.

  Wearable electronic devices have been developed as body wearing devices that acquire and measure biological information of the body. A wearable electronic device is a device that is used in a state of being in close proximity to or in close contact with the body. This device can input / output biological information of the body, perform computations, and communicate with the outside. Various sensors can be attached to the wearable electronic device, and environmental information such as temperature, humidity, and atmospheric pressure can be measured.

  As wearable electronic devices, for example, accessory integrated electronic devices such as wristwatches, glasses, earphones, and belts, and textile integrated electronic devices in which electronic functions are incorporated into clothes are known.

  As a textile integrated electronic device, for example, in Patent Document 1, a wiring pattern is formed by fixing a conductive member on the front or back surface of clothing, and an electric circuit for causing a predetermined electrical function is formed. Apparel with electrical circuits has been proposed. Patent Document 2 proposes an electronic garment including an electronic device and an electronic cloth or an electronic cloth having a wiring pattern and / or an electronic circuit for causing the electronic device to function.

  In the textile integrated electronic device, since the electronic function is incorporated in the garment, the wearer only needs to wear the garment, and it is not necessary to attach the electronic device to the body like the accessory type electronic device. Therefore, it is possible to reduce the stress of the wearer who newly installs the electronic device. In addition, loss of electronic equipment can be prevented.

  Such wearable electronic devices are provided with electrodes in order to acquire and measure biological information of the body, and an electrical signal of the body is acquired with the electrodes. In addition, the wearable electronic device includes an electronic unit having a function of measuring an electric signal acquired by the electrode, and the electrode and the electronic unit are connected by electric wiring for power supply or signal transmission.

  In the case of textile-integrated electronic devices, clothing expands and contracts in accordance with the movement of the body, so that electrical wiring provided on the clothing is required to be stretchable. However, since the metal wire and metal foil used as the material of the electric wiring do not have elasticity, the electric wiring made of the metal wire or metal foil is, for example, as a pattern in which a wavy pattern, a zigzag pattern, or a horseshoe shape is repeated. By forming it on clothes, it is given pseudo elasticity. For example, in the case of an electrical wiring made of a metal wire, pseudo elasticity can be imparted by regarding the metal wire as an embroidery thread and sewing it on a garment in a zigzag pattern. In the case of electrical wiring made of metal foil, the metal foil and a stretchable resin sheet are bonded together, and a corrugated pattern or the like is formed on the garment in the same manner as a printed wiring board. Sex can be imparted.

  As a method for imparting stretchability to electrical wiring, for example, Patent Document 3 discloses a rubber material provided with a conductive portion formed by bringing conductive particles into contact with each other on a stretchable base material mainly composed of rubber. Is disclosed. Silicone rubber is used as the rubber, and silver particles are used as the conductive particles.

  As a method for imparting stretchability to electrical wiring, a method of printing and drawing electrical wiring on clothes using a conductive paste is also known. Examples of the conductive paste include those obtained by kneading conductive particles such as silver particles, carbon particles, and carbon nanotubes, elastomers such as stretchable urethane resins, binders such as natural rubber and synthetic rubber, and solvents. Used. For example, Patent Document 4 describes an electrical wiring formed by drying a polyurethane dispersion and a conductive paste of conductive particles. Silver particles are used as the conductive particles.

  As a method of printing and drawing electrical wiring on clothes using conductive paste, in addition to a method of printing and drawing conductive paste directly on clothes, a combination of conductive paste and stretchable film substrate, etc. Methods for printing and drawing on clothes are known.

  When the electric wiring is formed using the conductive paste, the electric wiring can be stretched macroscopically. The specific resistance of this electric wiring is macroscopically higher than the specific resistance of the electric wiring formed using a metal wire or metal foil, but the electric wiring formed using a conductive paste itself is stretchable. Therefore, it is not necessary to change the shape of the electrical wiring to a corrugated pattern, a zigzag pattern, or a pattern in which a horseshoe shape is repeated. Therefore, the degree of freedom of the width and thickness of the electric wiring is increased, and as a result, an electric wiring having a resistance lower than that of an electric wiring formed using a metal wire or a metal foil can be formed.

JP-A-2-234901 Japanese Patent No. 3723565 JP 2007-173226 A JP 2012-54192 A

  A person can regulate body temperature by sweating, and the amount of sweat increases when exercising, so the clothes become very wet. However, when wearing a textile-integrated garment that incorporates electronic functions as a wearable electronic device, even if the garment is wet or soiled with dirt, mud, etc., the body's biological information is acquired and measured. To continue, you must continue to wear clothes. Of course, it is possible to change clothes, but textile-integrated clothes incorporating electronic functions are more expensive than ordinary clothes, so it is economically difficult to prepare multiple similar clothes and it is easy to change clothes. There is no actual situation. In addition, when changing clothes, some electronic devices need to be set again to acquire and measure biological information about the body, which may make the operation complicated. Therefore, the accessory-type wearable electronic device has an advantage that it is easier to change clothes than the textile integrated wearable electronic device.

  In addition, when acquiring biological information of the body, it is only necessary to give the electrode part elasticity so that the electrode is in close contact with the body. However, in the case of textile-integrated clothes, the whole clothes should be elastic. Because it is necessary, the wearer is more unnecessarily pressured by clothes and feels uncomfortable.

  As an accessory type wearable electronic device, a belt represented by a heart rate belt (chest belt) is known.

  However, if a belt is attached to a portion other than the constricted part of the body, it is difficult to fix the belt at a specific position on the body because it is likely to shift due to movement or its own weight during exercise. For example, around the joints such as shoulder, axilla (armpit), elbow (opposite side of elbow), elbow, patella (knee), specific position of neck, specific position of upper arm, specific position of forearm, chest and abdomen It is difficult to fix to a specific position of the trunk, a specific position of the thigh, a specific position of the lower leg, a heel (heel) or the like.

  It is conceivable to tighten tightly so that the belt does not slip, but if tightened tightly, the wearer becomes uncomfortable, the degree of freedom of the body is limited, and blood circulation becomes poor. Also, if tightened tightly, the belt and body may rub and scratches may occur. Furthermore, if the belt is secured to the trunk, it may interfere with breathing. Therefore, it has been difficult to acquire and measure biological information of the body in a natural state using a belt.

  Furthermore, since the belt is poor in design, it is difficult to feel attractive to wear such a belt. Also, when wearing a belt on the chest, it seems that a brassiere is attached, so men, in particular, may be reluctant to wear the belt.

  The present invention has been made paying attention to the circumstances as described above, and its purpose is that it can be easily fixed at a specific position on the body, can acquire and measure biological information of the body in a natural state, and is also designed. It is to provide an excellent body wearing device.

The body wearing device according to the present invention that has solved the above-described problems has the following configuration.
[1] A body wearing device having a plurality of electrodes that come into contact with the wearer's skin, and has a hanging fabric portion (hereinafter simply referred to as a “clothing fabric portion”) passing through one shoulder portion of the wearer. And a body wearing tool that does not have a hanging fabric portion that passes through the other shoulder portion.
[2] The body wearing tool according to [1], wherein the overhanging fabric portion has length adjusting means.
[3] The body wearing tool according to [1], in which the hanging fabric portion includes a wide area and a narrow area narrower than the wide area.
[4] The body wearing tool according to [3], wherein the narrow region has length adjusting means.
[5] The hook fabric portion further includes a connection member starting from a predetermined position on the abdomen side of the wearer and passing through axilla to a predetermined position on the back side of the wearer. The body wearing tool in any one.
[6] The body attachment device according to [5], wherein the connection member starts from a predetermined position on the back side of the wearer, passes through the other armpit, and reaches a predetermined position on the abdomen side of the wearer.
[7] The body attachment device according to [5] or [6], wherein the connection member includes a length adjusting unit.
[8] The body wearing device according to any one of [1] to [7], wherein the overhanging fabric portion includes at least one pair of electrodes on the abdomen side of the wearer.
[9] The body wearing device according to any one of [1] to [7], wherein the overhanging fabric portion includes at least one pair of electrodes on the back side of the wearer.
[10] The body-worn device according to any one of [1] to [7], wherein the overhanging fabric portion includes at least one pair of electrodes on the right outer side and the left outer side of the wearer.
[11] The body wearing device according to any one of [1] to [7], wherein the overhanging fabric portion includes at least one pair of electrodes that are paired on the abdomen side and the back side of the wearer.
[12] On the abdomen side of the wearer, one electrode is provided between the clavicle on the one shoulder side and the nipple, and on the back surface of the wearer, the other electrode is provided below the one electrode in the height direction. The body wearing device according to [11].
[13] The body wearing tool according to any one of [1] to [12], in which the hanging fabric portion has an accessory storage portion.

  According to the present invention, the body-worn device has a shape that has a hanging fabric portion that passes through one shoulder portion of the wearer and does not have a hanging fabric portion that passes through the other shoulder portion. Can be fixed. Moreover, since it can fix without tightening tightly, the biological information of a body can be acquired and measured in a natural state. Furthermore, since the design properties can be improved, men can also wear without resistance.

FIG. 1 is a schematic diagram showing a wearing state of a body wearing tool 1 according to the present invention. FIG. 2 is an enlarged view of the body wearing tool 1 shown in FIG. FIG. 3 is a partially enlarged view of the body wearing tool 1 shown in FIG. 1 and is a schematic diagram showing a state in which the body wearing tool 1 is laid flat. FIG. 4 is a front view of the body wearing device 1. FIG. 5 is a rear view of the body wearing tool 1 shown in FIG. FIG. 6 is a schematic diagram showing a wearing state of the body wearing tool 1 shown in FIG.

  The body wearing device according to the present invention has a plurality of electrodes that come into contact with the wearer's skin, has a hanging fabric portion that passes through one shoulder portion of the wearer, and a hanging fabric portion that passes through the other shoulder portion. There is a feature that does not have. Hereinafter, the body wearing device according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the illustrated examples, and may be appropriately changed within the scope that can be adapted to the above and the following. It is also possible to carry out by adding any of these, and they are all included in the technical scope of the present invention.

  FIG. 1 is a schematic diagram showing a wearing state of a body wearing tool 1 according to the present invention. The dotted line shown in FIG. 1 shows the outline of a person, and FIG. 1 shows the state seen from the front of the wearer. The body wearing device 1 has a hanging fabric portion that passes through one shoulder portion 2a of the wearer, and does not have a hanging fabric portion that passes through the other shoulder portion 2b of the wearer. As shown in FIG. 1, the body wearing device according to the present invention is annular, one-sided, and not twilled. In this way, the body wearing device has a shape that has a hooked fabric portion that passes through one shoulder portion of the wearer and does not have a hooked fabric portion that passes through the other shoulder portion, and thus can be fixed at a specific position on the body. . Moreover, since it can be fixed without tight tightening, such as textile-integrated clothes and accessory-type belts, it is possible to acquire and measure biological information of the body in a natural state. Furthermore, even if a body wearing tool is worn, it does not look like a brassiere, so the design is improved and men can wear without resistance.

  Since the body wearing device of the present invention can be worn under clothes, when the clothes become wet or dirty, the clothes can be easily changed and the wearer can wear his / her favorite clothes.

  Although FIG. 1 shows a state where the body wearing tool 1 is worn on the abdomen side of the wearer, the body wearing tool 1 may be worn on the back side of the wearer.

  Next, the body wearing tool 1 according to the present invention shown in FIG. 1 will be described in more detail with reference to FIG. FIG. 2 is an enlarged view of the body wearing tool 1 shown in FIG. 1, and includes a wide region 10 and a narrow region 11 that is narrower than the wide region 10. The narrow region 11 mainly functions as a connection member for fixing the wide region 10 to the body.

  The body wearing device 1 is in close contact with the body at a position where it comes into contact with one shoulder 2a and a position near the waist on the outside of the wearer so that it can be passed through one shoulder of the wearer. Is preferred. Since the displacement of the body wearing device can be prevented by being in close contact with the body, it can be fixed at a specific position on the body without being tightly tightened, and the biological information of the body can be acquired and measured in a natural state.

  For example, as shown in FIG. 3, when the body wearer 1 is placed flat with the front body up and the back body down, as shown in FIG. 3, the shoulder 2 a contacts in the narrow region 11. In this position, the ring may be formed so that the longitudinal length 11b on the arm side is longer than the longitudinal length 11a on the neck side. Further, although not shown, the same applies to the position where the wearer contacts the waist near the outside.

  Although the width | variety of the said wide area | region 10 is not specifically limited, For example, 20 cm or less is preferable, More preferably, it is 15 cm or less, More preferably, it is 10 cm or less.

  On the other hand, the width of the narrow region 11 is not particularly limited, but if it is too narrow, it may bite into the wearer's body and cause discomfort. Therefore, the width of the narrow region 11 is preferably, for example, 1.5 cm or more, more preferably 2 cm or more, and still more preferably 2.5 cm or more.

  The widths of the wide area 10 and the narrow area 11 may be constant in each area or may vary within each area.

  An electronic unit 13 is provided in the wide area 10 shown in FIG. The electronic unit 13 is preferably provided on the side that does not contact the wearer's skin. On the other hand, a plurality of electrodes (not shown) may be provided on the side of the wide region 10 that contacts the skin of the wearer, and the electrodes and the electronic unit 13 may be connected by electrical wiring. The electronic unit 13, electrodes, and electrical wiring will be described later.

  As shown in FIG. 2, it is preferable to provide an accessory storage portion 14 in the wide region 10. By providing the accessory storage unit 14, for example, accessories such as a smartphone, a mobile phone, a wallet, and a key can be inserted.

  The accessory storage portion 14 only needs to have an opening for taking in and out accessories and a holding portion for storing and holding accessories. Specifically, a pocket, a net-like accessory holder, etc. What is necessary is just to provide. In addition, in FIG. 2, the pocket is provided as the accessory storage part 14, and the smart phone 15 is put.

  The material of the accessory storage unit 14 is not particularly limited. For example, the accessory storage unit 14 may be formed of a mesh material in order to improve air permeability, or may be formed of a water-resistant material so as not to wet the storage. .

  In FIG. 2, the accessory storage unit 14 is provided on the side that does not contact the wearer's skin, but the accessory storage unit may be provided on the side that contacts the wearer's skin.

  The narrow region 11 is provided with length adjusting means 12. The length adjusting means 12 shown in FIG. 2 is a buckle. By having the length adjusting means 12, it is possible to further prevent the body wearing tool from being displaced, so that it can be fixed at a specific position on the body without being tightly tightened, and the biological information of the body can be acquired and measured in a natural state.

  As said length adjustment means 12, engaging members, such as a buckle, a hook, a hook-and-loop fastener, a button, a snap button, Koki (backpack can, adjuster), can be used, for example, or it uses together 2 or more types. May be. Among these, a buckle is preferable from the viewpoint of easy removal.

  The number of the length adjusting means 12 is not particularly limited, and may be one or two or more. By providing a plurality of length adjusting means 12 and connecting, for example, a length adjusting belt between them, the body wearing device can be shared by persons of different physiques.

  The wide area 10 and the narrow area 11 may use a cloth cut out as an integral shape, or may prepare and sew parts of the wide area 10 and parts of the narrow area 11 respectively.

  Next, another configuration example of the body wearing tool according to the present invention will be described with reference to FIGS. 4 is a front view of the body wearing device 1, FIG. 5 is a rear view of the body wearing device 1 shown in FIG. 4, and FIG. 6 is a schematic view showing a wearing state of the body wearing device 1 shown in FIG. is there. The same parts as those in FIG. 1 and FIG. The dotted line shown in FIG. 6 has shown the outline of the person, and FIG. 6 has shown the state seen from the wearer's front.

  The body wearing device 1 shown in FIG. 4 starts from a predetermined position 21a on the abdomen side of the wearer, passes through the axilla 31a, travels around the back of the wearer, passes through the axillary 31b, and passes through the axillary 31b. It has the connection member 21 which reaches the position 21b. By having the connection member 21, the adhesion of the body wearing device 1 to the body can be improved and the displacement of the body wearing device 1 can be prevented, so that the body wearing device 1 can be fixed at a specific position. The axilla means the armpit. Further, the one axilla 31a is below the one shoulder 2a side through which the fabric portion passes, and the other axilla 31b is below the other shoulder 2b through which the fabric portion does not pass.

  The contact pressure of the connection member 21 on the body is preferably, for example, 0.5 kPa or more. The contact pressure is more preferably 0.6 kPa or more, and still more preferably 0.8 kPa or more. The upper limit is preferably 1.2 kPa or less, for example. The contact pressure can be measured using, for example, a strain gauge, a water back pressure sensor, an air pack pressure sensor, or the like.

  The connecting member 21 is provided with length adjusting means 12. The length adjusting means 12 shown in FIG. 5 is a buckle. By having the length adjusting means 12, it is possible to further prevent the body wearing tool from being displaced, so that it can be fixed at a specific position on the body without being tightly tightened, and the biological information of the body can be acquired and measured in a natural state.

  As the length adjusting means 12, the engaging member exemplified in the length adjusting means 12 can be used, and a buckle is preferable.

  When the connection member 21 is provided, it is preferable to provide wings 10 a and 10 b at the connection position between the connection member 21 and the wide region 10 as shown in FIG. 4. By providing the wings 10a and 10b, the connection strength between the connection member 21 and the wide region 10 can be increased.

  FIG. 4 shows a configuration in which the connecting member 21 extends from the predetermined position 21a on the abdomen side of the wearer to the predetermined position 21b on the abdomen side of the wearer. It may be configured to start from the predetermined position 21a and pass through the axilla 31a to reach the predetermined position 21c on the back side of the wearer. That is, the body wearing tool 1 can be fixed by rotating the connecting member 21 around the upper arm on the side of the shoulder 2a through which the body wearing tool 1 passes.

  1 to 6 show the body wearing device 1 including the wide region 10 and the narrow region 11, the width of the fabric portion may be constant, and the connection member 21 is provided in the annular fabric portion. May be.

  Examples of the fabric constituting the fabric portion include woven fabric, knitted fabric, and nonwoven fabric.

  When the fabric is a woven fabric, for example, a fabric woven with plain weave, twill weave, satin weave, or the like can be used.

  When the above fabric is knitted, for example, flat knitting, Kanoko knitting, Amunsen knitting, lace knitting, eyelet knitting, splicing knitting, pile knitting, rib knitting, ripple knitting, turtle shell knitting, blister knitting, Milan rib knitting, single picket knitting , Double picket, oblique, helibone, punch Rome, basket, tricot, half tricot, satin tricot, double tricot, quins cord, striped football, russell, tulle mesh, and these What was knitted by deforming and combining can be used.

  As said nonwoven fabric, the thing using an elastomer fiber etc. is mentioned, for example.

  The kind of fiber used as the raw material of the said fabric is not specifically limited, A natural fiber or a chemical fiber can be used. Examples of the natural fiber include plant fibers such as cotton and hemp, and animal fibers such as wool, silk, and cashmere. As said chemical fiber, nylon, an acryl, polyester, a polyurethane etc. can be used, for example.

  The above fibers can be used alone or in combination.

  When blending the above fibers, natural fibers and chemical fibers may be blended, a plurality of types of natural fibers may be blended, or a plurality of types of chemical fibers may be blended.

  Examples of the combination in the case of blending include a combination of cotton and polyurethane, and a combination of cotton, polyester, and polyurethane.

  When the said fabric contains cotton, when the mass of the whole fabric is made into 100%, it is preferable to contain 25 mass% or more of cotton. The content of the cotton is more preferably 45% by mass or more, and still more preferably 65% by mass or more. Although an upper limit is not specifically limited, 100 mass% of cotton may be sufficient, More preferably, it is 95 mass% or less.

  The fabric preferably contains a material having elasticity in addition to cotton. Examples of the stretchable material include spandex made of polyester, polyurethane, natural rubber, synthetic rubber, various elastomers, and the like.

  The stretchable material is preferably contained in an amount of 5% by mass or more when the mass of the entire fabric is 100%. The stretchable material is more preferably 10% by mass or more, and still more preferably 15% by mass or more. Although an upper limit is not specifically limited, For example, 55 mass% or less is preferable.

  It is preferable that the fabric has stretchability capable of repeatedly stretching 10% or more. The stretchability can be measured, for example, by repeatedly performing a stretchability test on stretchable fabrics and knitted fabrics according to JIS L1096 (2010).

  The fabric preferably has a breaking elongation (tensile elongation) of 50% or more. The breaking elongation can be measured by a tensile strength test.

  The fabric may be coated with resin or impregnated with resin. For example, polyurethane, synthetic rubber, natural rubber, or the like can be used as the resin for covering or impregnating the fabric.

  Moreover, you may use a rubber sheet for a part of said fabric. As the rubber sheet, for example, a foam of a synthetic rubber sheet represented by chloroprene can be used. As the synthetic rubber sheet, one sold as Neoprene (registered trademark) can be used.

  When the hanging fabric portion passing through the one shoulder portion 2a includes the wide region 10 and the narrow region 11, the fabric constituting the wide region 10 and the material constituting the narrow region 11 are the same. It may be different or different.

  The stretchability of the wide region 10 and the narrow region 11 may be the same or different, and in such a case, the stretchability of the narrow region 11 is higher than the stretchability of the wide region 10. Is preferably higher.

  Next, the electronic unit 13, the electrodes, and the electrical wiring will be described. The said body wearing tool 1 has a some electrode which contacts a wearer's skin, and acquires an electrical signal with the said electrode.

  The hanging fabric portion may have (a) at least one pair of electrodes on the abdomen side of the wearer, or (b) at least one pair of electrodes on the back side of the wearer. (C) It may have at least one pair of electrodes on the right outer side and left outer side of the wearer, or (d) at least one pair of electrodes on the ventral side and the back side of the wearer. You may have. In the case of (d) above, one electrode is provided between the clavicle on one shoulder side and the nipple on the abdomen side of the wearer, and the other on the back side of the wearer in the height direction from the one electrode. You may have an electrode. One set of the electrodes may be provided, or two or more sets may be provided.

  The shape and size of the electrode are not particularly limited, and may be determined in consideration of the shape and size of the body wearing device 1.

  As the electrode, for example, (1) metal foil, (2) conductive fabric, (3) stretchable conductor layer, etc. may be formed.

(1) Metal foil The metal foil is selected from the group consisting of copper foil, phosphor bronze foil, nickel-plated copper foil, tin-plated copper foil, nickel / gold-plated copper foil, aluminum foil, silver foil, and gold foil, for example. At least one metal foil is preferred.

  The average thickness of the metal foil is preferably 0.08 μm or more, for example. The average thickness is preferably 50 μm or less, more preferably 25 μm or less, still more preferably 15 μm or less, particularly preferably 8 μm or less, and most preferably 4 μm or less.

  The metal foil may be formed by a known method such as an electrolytic method, an electroless method, a rolling method, a vapor deposition method, or a sputtering method.

  The metal foil is preferably processed into a predetermined pattern shape by a method such as an etching method, a lift-off method, an additive method, a punching method, or a laser cutting method.

(2) Conductive fabric The said conductive fabric means the fiber structure which has electroconductivity. Examples of the conductive fabric include woven fabrics, knitted fabrics, and non-woven fabrics composed of fibers including conductive yarns (meaning including conductive yarns and conductive fibers; hereinafter the same). The conductive yarn means a yarn having a resistance value of 100Ω or less per 1 cm of fiber length.

  The conductive yarns include conductive fibers, fiber bundles of conductive fibers, twisted yarns obtained from fibers containing conductive fibers, braided yarns, spun yarns, blended yarns, ultrafine metal wires and films obtained by extremely extending metal wires. It is a general term for ultra-thin films cut into ultra-fine fibers.

  Examples of the conductive fibers include chemical fibers or natural fibers coated with metal, chemical fibers or natural fibers coated with conductive metal oxides, carbon-based conductive materials such as graphite, carbon, carbon nanotubes, and graphene. Chemical fibers or natural fibers coated with, and chemical fibers or natural fibers coated with a conductive polymer.

  Further, as the conductive fiber, for example, a polymer material containing at least one conductive material selected from the group consisting of metals, conductive metal oxides, carbon-based conductive materials, and conductive polymers is spun. The fiber obtained in this way can be used.

  As the fiber bundle of the conductive fibers, for example, a fiber bundle made of microfiber or nanofiber of the conductive fibers, which is obtained by supporting and impregnating a conductive filler or a conductive polymer is used. be able to.

  As the conductive yarn, a twisted yarn, a braided yarn, a spun yarn, a blended yarn or the like obtained using a fiber containing the conductive fiber may be used.

  The conductive yarn includes an ultrafine metal wire obtained by extending a metal wire extremely finely.

  The average diameter of the conductive fiber, the fiber bundle of the conductive fiber, the twisted yarn, the braided yarn, the spun yarn, the blended yarn, and the ultrafine metal wire obtained from the fiber containing the conductive fiber is preferably 250 μm or less, and more preferably Is 120 μm or less, more preferably 80 μm or less, and particularly preferably 50 μm or less.

  The conductive yarn also includes an ultrafine film obtained by cutting a film into ultrafine fibers, and the ultrafine film is a group consisting of a metal, a conductive metal oxide, a carbon-based conductive material, and a conductive polymer. It means a fibrous film obtained by cutting a polymer film coated with at least one selected conductive material into a width of 800 μm or less.

  Among the conductive yarns, at least one selected from the group consisting of chemical fibers coated with metal, fiber bundles of conductive fibers carrying and impregnating a conductive polymer, and ultrafine metal wires having an average diameter of 50 μm or less. It is preferable to use seeds.

  Specific examples of the conductive fabric include a fiber structure in which a conductive thread is embroidered on a non-conductive cloth, a fiber structure in which a non-conductive cloth is impregnated with a conductive polymer-containing solution, and a conductive structure. And a fiber structure impregnated and dried with a solution containing a conductive filler and a binder resin. Among these, it is preferable to use a fiber structure obtained by impregnating a conductive polymer-containing solution into a non-conductive fabric and drying it.

  As the conductive polymer, for example, a mixture containing poly (3,4-ethylenedioxythiophene) and polystyrenesulfonic acid can be preferably used.

  As the fiber containing the conductive yarn, a synthetic fiber multifilament is preferable, and at least a part of the synthetic fiber multifilament is an ultrafine filament having a fineness of less than 30 dtex, or a fineness of more than 400 dtex and a single yarn fineness. Is preferably a synthetic fiber multifilament of 0.2 dtex or less.

When the conductive fabric is a woven fabric composed of fibers containing conductive yarns or a knitted fabric, the basis weight is preferably less than 50 g / m ² and can prevent the conductive polymer from falling off. Moreover, it is preferable that a fabric weight exceeds 300 g / m < ² >, and sufficient electroconductivity can be ensured.

(3) Stretchable conductor layer The stretchable conductor layer means a layer having stretchability and a specific resistance of 1 × 10 ⁰ Ωcm or less. The term “stretchability” means that 10% or more can be repeatedly stretched while maintaining conductivity.

  The stretchable conductor layer preferably has a breaking elongation of 40% or more by itself. The breaking elongation is more preferably 50% or more, and still more preferably 80% or more. The breaking elongation can be measured by applying a conductive paste to a predetermined thickness on a release sheet, peeling off after drying, and performing a tensile test.

  The stretchable conductor layer preferably has a tensile modulus of 10 to 500 MPa.

  The average thickness of the stretchable conductor layer is, for example, preferably 15 μm or more, more preferably 30 μm or more. For example, the average thickness is preferably 250 μm or less, more preferably 150 μm or less, and still more preferably 80 μm or less.

  Hereinafter, a material capable of forming such a stretchable conductor layer may be referred to as a stretchable conductor layer composition.

  The stretchable conductor layer can be formed, for example, using a conductive paste as the stretchable conductor layer composition.

  The conductive paste contains at least (i) conductive particles, (ii) a flexible resin, and (iii) a solvent.

(I) Conductive Particles The conductive particles mean particles having a specific resistance of 1 × 10 ⁻¹ Ωcm or less. Examples of the particles having a specific resistance of 1 × 10 ⁻¹ Ωcm or less include metal particles, alloy particles, carbon particles, carbon nanotube particles, doped semiconductor particles, conductive polymer particles, and hybrid particles.

  Examples of the metal particles include silver particles, gold particles, platinum particles, palladium particles, copper particles, nickel particles, aluminum particles, zinc particles, lead particles, and tin particles. Examples of the alloy particles include brass particles, bronze particles, white copper particles, and solder particles. Examples of the doped semiconductor particles include tin oxide and a composite oxide of indium and tin. Examples of the conductive polymer particles include particles made of a mixture containing poly (3,4-ethylenedioxythiophene) and polystyrene sulfonic acid, and metal-coated polymer particles. Examples of the hybrid particles include metal-coated metal particles, metal-coated glass particles, and metal-coated ceramic particles. Examples of the metal-coated metal particles include silver-coated copper particles.

  The average particle size of the conductive particles is, for example, preferably 100 μm or less, more preferably 30 μm or less, and still more preferably 12 μm or less. Although the minimum of the said average particle diameter is not specifically limited, For example, it is 0.08 micrometer or more.

  The particles may be, for example, flaky powder or amorphous aggregated powder. For example, flaky silver particles or amorphous aggregated silver powder can be used as the silver particles.

  The average particle diameter of the flaky powder is preferably such that the average particle diameter (50% D) measured by the dynamic light scattering method is 0.5 to 20 μm, for example. If the average particle size is less than 0.5 μm, the particles may not be in contact with each other, and the conductivity may be deteriorated. The average particle diameter is more preferably 3 μm or more, and further preferably 5 μm or more. However, if the average particle diameter exceeds 20 μm, it may be difficult to form fine wiring. In addition, clogging may occur when screen printing is performed. The average particle diameter is more preferably 15 μm or less, still more preferably 12 μm or less.

  The average particle diameter of the above-mentioned irregularly-shaped agglomerated powder is preferably such that the average particle diameter (50% D) measured by the light confusion method is, for example, 1 to 20 μm. When the average particle diameter is less than 1 μm, the effect as an agglomerated powder is lost and the conductivity may not be maintained. The average particle diameter is more preferably 3 μm or more, and further preferably 5 μm or more. However, when the average particle diameter exceeds 20 μm, dispersibility in a solvent is lowered and pasting becomes difficult. The average particle diameter is more preferably 15 μm or less, still more preferably 12 μm or less.

(Ii) Flexible resin As the flexible resin, a thermoplastic resin, thermosetting resin, rubber or the like having an elastic modulus of 1 to 1000 MPa can be used. In order to express the stretchability of the film, it is preferable to use rubber. The elastic modulus is preferably 3 MPa or more, more preferably 10 MPa or more, and further preferably 30 MPa or more. The elastic modulus is preferably 600 MPa or less, more preferably 500 MPa or less, and still more preferably 300 MPa or less.

  Examples of the thermoplastic resin include polyethylene, polyvinyl chloride, polystyrene, polyvinyl acetate, polyurethane, acrylic resin, polyamide, and polyester. As said thermosetting resin, a phenol resin, an epoxy resin, a melamine resin, a silicone resin etc. can be used, for example.

  Examples of the rubber include urethane rubber, acrylic rubber, silicone rubber, butadiene rubber, nitrile group-containing rubber such as nitrile rubber and hydrogenated nitrile rubber, isoprene rubber, sulfurized rubber, styrene butadiene rubber, butyl rubber, chloroprene rubber, and chlorosulfone. And polyethylene glycol, ethylene propylene rubber, and vinylidene fluoride copolymer. Among these, nitrile group-containing rubber, chloroprene rubber, and chlorosulfonated polyethylene rubber are preferable, and nitrile group-containing rubber is particularly preferable.

  The nitrile group-containing rubber is not particularly limited as long as it is a rubber or elastomer containing a nitrile group. For example, nitrile rubber and hydrogenated nitrile rubber are preferable. Nitrile rubber is a copolymer of butadiene and acrylonitrile. If the amount of bound acrylonitrile is large, the affinity with metal increases, but the rubber elasticity contributing to stretchability decreases conversely. Therefore, the amount of bound acrylonitrile in the acrylonitrile-butadiene copolymer rubber is preferably 18 to 50% by mass, more preferably 40 to 50% by mass.

  The blending amount of the flexible resin is 7 to 35% by mass, more preferably 9% by mass or more, still more preferably 12% by mass or more, and more preferably 28% with respect to the total of the conductive particles and the flexible resin. It is at most 20% by mass, more preferably at most 20% by mass.

(Iii) Solvent The solvent is not particularly limited, and a known organic solvent or aqueous solvent can be used.

  It is preferable to have an electrode surface layer on the surface of the electrode, that is, the side in contact with the wearer's skin. On the other hand, it is preferable to have a base layer at the boundary between the electrode and the fabric portion in order to enhance the insulation.

(Electrode surface layer)
Examples of the electrode surface layer include a noble metal plating layer, a metal layer that is difficult to oxidize due to passive formation, a corrosion-resistant alloy layer, a carbon layer, a stretchable conductive layer, and the like. It may be provided.

  Examples of the noble metal plating layer include at least one layer selected from the group consisting of gold, silver, platinum, rhodium, and ruthenium. Examples of the metal layer that is difficult to oxidize due to the passive formation include one layer selected from the group consisting of chromium, molybdenum, tungsten, and nickel. As said corrosion-resistant alloy layer, layers, such as a Monel alloy, are mentioned, for example. The carbon layer is preferably formed by printing a carbon paste or the like on the surface of the electrode.

  As the stretchable conductive layer, for example, a layer is preferably formed using a stretchable conductive composition containing a conductive filler and a flexible resin.

  The average thickness of the electrode surface layer is preferably 12 μm or more, more preferably 20 μm or more, and still more preferably 40 μm or more. The average thickness is an arithmetic average thickness of the electrode surface layer, and is an arithmetic average value of values obtained by randomly measuring 10 points of the thickness.

(Underlayer)
The above-mentioned insulating property means that it includes mechanical, chemical and biological insulating properties in addition to electrical insulating properties. That is, it has a function of insulating the electrode from moisture such as sweat that permeates the fabric, chemical substances, and biological substances.

  The underlayer is preferably a flexible polymer material. As the flexible polymer material, materials called rubber and elastomer can be used. As the rubber and elastomer, rubbers and elastomers specifically exemplified as the flexible resin exemplified as the stretchable conductor layer composition can be preferably used.

  The average thickness of the underlayer is preferably 12 μm or more, more preferably 20 μm or more, and still more preferably 40 μm or more. The average thickness is an arithmetic average thickness of the underlayer, and is an arithmetic average value obtained by randomly measuring 10 points of the thickness.

  It is preferable that the base layer has a stretchability capable of repeatedly stretching by 10% or more. The underlayer preferably has a breaking elongation of 50% or more. Furthermore, the underlayer preferably has a tensile modulus of 10 to 500 MPa.

  The underlayer is preferably formed on the surface of the fabric through, for example, a liquid or slurry such as a coating liquid, immersion liquid, printing ink or printing paste.

  In addition, as the base layer, a urethane resin or a sheet of rubber or the like may be prepared in advance and bonded to the fabric by a technique such as hot pressing.

(Electronic unit)
The body wearing device preferably includes an electronic unit having a function (calculation means) for calculating an electric signal obtained by the electrode in addition to the electrode. In the electronic unit, by calculating an electrical signal acquired by the electrode, biological information on the body such as heart rate, pulse rate, respiratory rate, blood pressure, body temperature, myoelectricity, and the like can be obtained.

  The electronic unit preferably further includes a display unit, a storage unit, a communication unit, a USB connector, and the like.

  As the communication means, for example, biometric information converted by Bluetooth (registered trademark) or the like is wirelessly transmitted to an external device (for example, a wristwatch, a personal computer, a tablet personal computer, a portable information device such as a smartphone). It is preferable to have a function that can be performed. It is also preferable to provide a connector in the electronic unit, connect the electronic unit and an external device with a wire, and provide a function that can transmit biological information stored in the electronic unit to the external device.

  The electronic unit may include a sensor that can measure environmental information such as temperature, humidity, and atmospheric pressure, a sensor that can measure position information using GPS, and the like.

  It is preferable that the electronic unit is detachable from the body wearing device.

(Electric wiring)
The electrode and the electronic unit are connected by electric wiring for power supply or signal transmission. As the electrical wiring, for example, (1) metal foil, (2) conductive fabric, (3) stretchable conductor layer, etc. may be formed as in the case of the electrode.

  The thickness of the electrical wiring may be the same as the thickness of the electrode.

  When forming a metal foil as the electrical wiring, for example, after forming a laminate of a stretchable sheet such as a rubber sheet, a urethane sheet, and a silicone rubber sheet and the metal foil, the subtractive method is used to form the metal foil. An unnecessary portion may be removed to form a predetermined pattern. The subtractive method is synonymous with an etching method used in a general printed wiring board manufacturing method.

  The stretchable sheet may serve as a base layer at the boundary with the fabric, or may be configured as a part of the base layer.

  When a conductive fabric is formed as the electrical wiring, it is preferable to combine the electrical wiring with a conductive yarn and an electrode using the conductive fabric.

The electrical wiring preferably has redundancy. The above redundancy refers to connecting two points using a path Y longer than the shortest distance with respect to the shortest distance X between the two points when two points A and B are defined in the space. Therefore, it means a state in which the connection state is maintained with a margin even when the distance between the two points is extended. Redundancy can be evaluated by a redundancy coefficient defined by the following equation.
Redundancy factor = Y / X

  In measuring the distance between two points and calculating the redundancy coefficient, if the line has a width, the length of the line passing through the center of the line may be measured.

  In order to provide redundancy to the electrical wiring, the shape of the electrical wiring may be, for example, a waveform pattern, a zigzag pattern, or a pattern in which a horseshoe shape is repeated. For example, in the case of a conductive fabric, it is possible to incorporate a conductive yarn into a knit, create a loop with the conductive yarn to ensure redundancy, and use the knit fabric itself as an electrical wiring.

  In the present invention, the redundancy coefficient is preferably 1.41 or more, more preferably 1.8 or more, still more preferably 2.2 or more, and particularly preferably 2.8 or more.

  It is preferable to provide an electric wiring surface layer on the surface of the electric wiring, that is, on the side opposite to the fabric. On the other hand, as in the case of the electrode, it is preferable to provide a base layer at the boundary between the electrical wiring and the fabric portion in order to enhance insulation.

(Electric wiring surface layer)
As the electric wiring surface layer, it is preferable to provide an insulating film having insulating properties. The resistivity of the insulating film is preferably 1 × 10 ⁹ Ωcm or more. As the insulating film, it is preferable to provide an insulating layer made of, for example, polyurethane, silicone rubber, polyacrylic ester or the like.

  The average thickness of the electric wiring surface layer is preferably 12 μm or more, more preferably 20 μm or more, and still more preferably 40 μm or more. The average thickness is an arithmetic average thickness of the insulating film, and is an arithmetic average value of values obtained by randomly measuring 10 points of the thickness.

  In addition to insulating properties, the insulating film preferably further has stretchability.

  As described above, according to the body wearing device of the present invention, it can be fixed at a specific position of the body, and the biological information of the body can be acquired and measured in a natural state. Men can also wear without resistance.

  The body wearing devices include, for example, martial arts such as karate, boxing, taekwondo, kendo, fencing, judo, baseball, softball, soccer, rugby, American football, tennis, table tennis, basketball, handball, volleyball, etc., jogging, It can be preferably worn when performing sports such as running, racewalking and other athletics, and cycling. In addition, the body wearing device may be worn by, for example, a sick person or a care recipient.

DESCRIPTION OF SYMBOLS 1 Body wearing tool 2a One shoulder part 2b The other shoulder part 10 Wide area | region 10a, 10b Wing | wing part 11 Narrow area | region 12 Length adjustment means 13 Electronic unit 14 Small article accommodating part 15 Smartphone 21 Connection member 31a One axilla 31b The other axilla

Claims (13)

A body wearing device having a plurality of electrodes that contact the wearer's skin,
A body-worn device that has an overhanging fabric portion that passes through one shoulder portion of the wearer (hereinafter simply referred to as a “overhanging fabric portion”) and does not have an overhanging fabric portion that passes through the other shoulder portion.   The body wearing device according to claim 1, wherein the hanging fabric portion has length adjusting means.   The body wearing tool according to claim 1, wherein the hanging fabric portion includes a wide area and a narrow area narrower than the wide area.   The body wearing device according to claim 3, wherein the narrow region has a length adjusting means.   The said hanging fabric part further has the connection member which starts from the predetermined position of the said wearer's ventral side, passes through an axilla, and reaches the predetermined position of the wearer's back side. Body wearing equipment.   The body attachment device according to claim 5, wherein the connecting member starts from a predetermined position on the back side of the wearer, passes through the other axilla, and reaches a predetermined position on the abdomen side of the wearer.   The body attachment device according to claim 5 or 6, wherein the connection member has a length adjusting means.   The body wearing device according to any one of claims 1 to 7, wherein the hanging fabric portion has at least one pair of electrodes on the abdomen side of the wearer.   The body wearing device according to any one of claims 1 to 7, wherein the hanging fabric portion has at least one pair of electrodes on the back side of the wearer.   The body wearing device according to any one of claims 1 to 7, wherein the hanging fabric portion has at least one pair of electrodes on the right outer side and the left outer side of the wearer.   The body wearing device according to any one of claims 1 to 7, wherein the hanging fabric portion has at least one pair of electrodes that are paired on the abdomen side and the back side of the wearer.   The wearer's ventral side has one electrode between the clavicle and the nipple on the one shoulder side, and the back surface of the wearer has the other electrode below the one electrode in the height direction. 11. The body wearing tool according to 11.   The body wearing device according to any one of claims 1 to 12, wherein the hanging fabric portion includes an accessory storage portion.

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