JP7355132B2 - Wearable smart devices, biological information measurement methods, clothing, and sports shirts - Google Patents

Description

The present invention relates to a method for electrically connecting a clothing-type input/output interface and a detachable device in a wearable smart device that includes at least a clothing-type input/output interface and a detachable device.

In recent years, technology for measuring biological signals and movements of humans, animals, etc. by incorporating sensor devices into clothing has been rapidly progressing, and it is becoming widely used in fields such as sports, medical care, and health monitoring. . These wearable electronic devices are called wearable smart devices.

A typical configuration of a clothing-type wearable smart device is a combination of a clothing-type input/output interface having electrodes, sensor devices, wiring, connectors, etc., and a detachable device. Here, the detachable device is an electronic device that performs detection, measurement, calculation, storage, communication to the outside, etc. of minute signals obtained from electrodes and sensor devices.
Because wearable smart devices are worn on the body, they can be contaminated by substances derived from living organisms and dust from the outside world, so they need to be able to withstand washing just like regular clothing. However, although electronic devices that are made up of general, conventional electronic circuits may have some degree of waterproofing, they do not have the same high waterproofing performance as clothing or the washing durability that can withstand detergents and drying processes. Not prepared. As a result, a practical and eclectic approach has become commonplace, in which electronic parts are removed for washing. In addition, similar ideas are applied not only to wearable smart devices but also to products that combine fabric and electrical elements, such as carpet-shaped seat heaters. (Patent Documents 1 and 2)

Japanese Patent Application Publication No. 2003-77566 Japanese Patent Application Publication No. 2015-135723

Attempts have been made for a long time to embed wiring elements in clothing to provide electronic and electrical functions, but most of these attempts involved connecting existing connectors to wiring embedded within clothing. For example, it may be an audio pin jack or a USB terminal. Such connectors tend to come off during use, and because they are relatively large, the thickness of the connector tends to cause problems such as rubbing against the skin or getting caught on the outside.

The snap-hook connector described in Patent Document 1 and Patent Document 2 can be said to be a method suitable for the process of manufacturing clothing, and can be used well when attaching and detaching flexible fabrics. It is. However, when applied to the detachable device intended by the present invention, since multiple connections are arranged on the rigid casing surface of the device, only the clothing side is required to have a deformation function when attached and detached, resulting in a snap hook. There is a problem in that excessive force is applied to the attachment part of the device, and the electrical connection on the clothing-type interface side is likely to be damaged.

Furthermore, in situations where the subject moves vigorously, such as when measuring biological information during exercise, the inertia of the mass of the detachable device continuously applies excessive force to the connector on the clothing side, which can easily lead to damage and damage to the connector. Problems such as the detachable device falling off may also occur if electrical contact is uneven, resulting in noise, or if there is particularly rapid movement.

As a result of intensive studies to achieve the above object, the inventors of the present invention have found that by keeping the attachment/detachment strength of the mating connector within a predetermined range, it is possible to prevent detachable devices from falling off during use or due to incomplete connections. We have found a wearable smart device that can be used for a long period of time without generating noise, and without placing an excessive load on the clothing-type interface when the detachable device is removed.

That is, the present invention has the following configuration.
[1] A wearable smart device that includes at least a clothing-type input/output interface and a detachable device, wherein the electrical connection between the clothing-type input/output interface and the detachable device is achieved by connecting a pair of clothing-type input/output interfaces and the detachable device, at least a part of which is made of a conductive material. This is carried out through a fitted body consisting of a male mold and a female mold, and the detachment force per pair of male mold and female mold of the said fitted body is in the range of 0.3 N or more and 10 N or less. A wearable smart device featuring:
[2] The wearable smart device according to [1], wherein the detachable device has a mass of 2 g or more and 80 g or less [3] The male or female type of the fitting body attached to the detachable device side is The wearable smart device according to any one of [1] and [2], characterized in that the wearable smart device is mounted on the same plane.
[4] The contact area between each male or female mold of the fitting body attached to the clothing type input/output interface side and the cloth or wiring material on the clothing side is 15 square mm or more. The wearable smart device according to any one of features [1] to [3].
[5] The total area of contact between either the male or female mold of the fitting body attached to the clothing-type input/output interface side and the fabric or wiring material on the clothing-type input/output interface side is 30 square mm or more. The wearable smart device according to any one of [1] to [4], characterized by:
[6] The wearable smart device according to any one of [1] to [5], wherein the electrical wiring material in the clothing-type input/output interface is a stretchable conductor composition.
[7] The wearable smart device according to any one of [1] to [5], wherein the electrical wiring material in the clothing-type input/output interface is a conductive thread.
[8] The wearable smart device according to any one of [1] to [5], wherein the electrical wiring material in the clothing-type input/output interface is metal foil.
smart device.
[9] The clothing type interface according to any one of [1] to [8], characterized in that the degree of elongation at break of the clothing is 70% or less within a range of at least 10 mm around the electrical connection part. Wearable smart device.

The present invention preferably further includes the following configurations.
[10] A method for measuring biological information, comprising measuring biological information of a driver while driving a car using the wearable smart device according to any one of [1] to [9].
[11] A method for measuring biological information, the method comprising measuring biological information of an athlete during exercise involving jumping using the wearable smart device according to any one of [1] to [9].
[12] A method for measuring biological information, comprising measuring biological information of a mammal other than a human using the wearable smart device according to any one of [1] to [9].

In the present invention, a pair of male/female mating bodies in which at least a portion of the contact surface is made of a conductive material functions as a so-called connector, and has functions of both electrical connection and mechanical connection. From the viewpoint of ease of attachment and detachment, it is preferable that the detachment force of the male type/female type of the fitting body be small. On the other hand, in order to stably hold the detachable device against vibrations and accelerations associated with movement so as not to detach, a detachment force greater than a certain level is required depending on the mass of the detachable device.
(Hereinafter, an example will be described in which a male mold is placed on the clothing side and a female mold is placed on the detachable device side, but even if the male and female parts are swapped, the composition will be the same and is within the scope of the present invention.)
However, if the detachment force is set too high due to prioritizing the stable retention of the detachable device, the connection between the male part of the fitting body attached to the clothing side and the electrical wiring material placed on the clothing may be damaged, especially during removal. Or, an excessive load is applied to the connection between the male mold and the cloth itself constituting the garment, which tends to cause both electrical and mechanical damage.
In particular, in cases where the structure of the detachable device side is rigid and the female mold of the fitting body is installed on the same plane, the detachment operation must be performed by pulling the clothing side, and the detachment force is further increased. Since it is easy to concentrate on a part of the merging, special care is required to prevent damage.
As long as the detachment force of the fitted body in the present invention is within the range, it is possible to both hold the detachable device and prevent damage to the detachable member. Further, in the present invention, particularly high effects can be obtained when the contact area of the fitting body with the clothing fabric or the Igu side wiring satisfies predetermined conditions.
Furthermore, a high effect can be obtained when the mass of the detachable device satisfies a predetermined condition.

As a result, the wearable smart device of the present invention has sufficient durability for practical use, and can measure the biological information of a driver who is driving a vibrating car or the like, and can measure the biological information of an athlete who performs strenuous exercise such as jumping. It can be effectively used to measure information, and even to measure biological information of mammals other than humans (livestock, pets) that sometimes exercise vigorously.

FIG. 1 is an example of a male and female type of a pair of male/female fittings used in the present invention. FIG. 2 is an example of a fitted state of a pair of male/female fitting bodies used in the present invention. FIG. 3 is a schematic diagram showing a method for measuring the detachment force of a pair of male/female fitted bodies in the present invention.

The present invention is a wearable smart device. The wearable smart device according to the present invention is configured by combining a clothing-type input/output interface and a detachable device. The two are electrically and mechanically connected to function as a wearable smart device.
A wearable smart device is an electronic device that is used by being attached to an adherend, and preferably has at least one function selected from the following: detecting a signal containing information about the adherend, storing, processing, communicating, and displaying. It is an electronic device with
Examples of adherends here include, but are not particularly limited to, humans, animals (livestock, pets), and mechanical devices having at least mechanically movable parts.
In addition, the term "wearable" literally refers to being worn on clothing, and also includes directly or indirectly pasting (patch) on an adherend, swallowing, and embedding.

In the present invention, the clothing-type input/output interface refers to clothing mainly made of textile materials (including outerwear, underwear, tops, bottoms, socks, gloves, hats, etc.) or a body part that includes parts made of textile materials. Equipment that incorporates electrical elements into equipment (helmets, shoes, protective clothing, protectors). Electrical elements include, but are not limited to, electrical wiring for transmitting electrical signals or power, sensor functions for collecting information from the adherend of a clothing-type input/output interface, and information on the adherend and/or its surroundings. Sensor function to collect information, electrode, GPS function to indicate the position of the adherend, sensor function to detect the movement of the adherend, information display function, power supply function, communication function (antenna), heating function (heater), cooling function (thermoelectric element), memory function, information processing function, calculation function, etc., or a part thereof.
The present invention preferably deals with a clothing-type input/output interface that includes at least electrodes and electrical wiring for collecting biological information of an adherend. Furthermore, the interface of the present invention may have both input and output functions, only input functions, or only output functions.

A detachable device in the present invention is electrically and mechanically connected to a clothing-type interface to constitute a wearable smart device. The detachable device and the clothing-type input/output interface mutually transmit signals and power to complete the function of a wearable smart device.
In the present invention, as a typical example, for example,
<1> The clothing-type input/output interface has electrodes and wiring for measuring biological potential, and the detachable device has a potential measurement function, information processing function, and communication function, and measures and stores the cardiac potential or myoelectric potential of the living body. or a device that communicates with an external terminal or network.
<2> A device in which the clothing-type input/output interface has an electric heating element, and the detachable device side has a power source and a control function.
<3> The clothing-type input/output interface has the function of converting the deformation of the body into a change in the amount of electricity through expansion, contraction or distortion, and the detachable device measures the amount of electricity based on the deformation of the body and stores it or sends it to an external terminal or network. A device that communicates with
etc. can be exemplified.

The mass of the detachable device in the present invention is preferably 2 g or more and 80 g or less, more preferably 3 g or more and 70 g or less, still more preferably 5 g or more and 50 g or less. In many cases, the power supply device occupies a large amount of mass in a detachable device, and if the mass of the detachable device is made lighter than necessary, the operating time will be shortened. Furthermore, if the mass of the detachable device exceeds a predetermined range, the inertia will increase, and the risk of the adherend falling off during operation will increase.

In the present invention, the electrical connection between the garment-type input/output interface and the detachable device is performed through a fitting body composed of a pair of male and female molds, at least a portion of which is made of a conductive material. be exposed. Although such a fitted body also has the aspect of mechanical joining, in the present invention, a combination with a mechanical joining method other than the bonding using such a fitted body may be used.
In the present invention, either one side of the male or female type of the fitting body is installed on the clothing type input/output interface side, and the opposite side is installed on the detachable device side. Usually, in the case of electrical connection, at least two poles are often required, so it is preferable that the number of fitting bodies in the present invention is plural.
The plurality of fitting bodies may be installed with male and female types aligned on the clothing type input/output interface side, or male and female types may be installed in combination. This type of configuration is effective when it is necessary to determine the plus or minus of an electrical connection. Further, it is also possible to use a combination of fitting bodies having different sizes of fitting portions.

In the present invention, the detachment force of the male and female types of the fitted body is in the range of 0.3N or more and 10N or less. This detachment force is defined as the detachment force when the male die is pulled in a direction perpendicular to the mating surface of the female die. The lower limit of the detachment force between the male and female molds of the fitted body in the present invention is preferably 0.40N or more, further preferably 0.50N or more, and still more preferably 0.8N or more. Further, the upper limit of the detachment force is preferably 8N or less, more preferably 7N or more, and still more preferably 6N or less.
If the detachment force is below a predetermined range, there is a possibility that the detachable device will fall off when the adherend moves violently. In addition, if the detachment force exceeds a specified range, excessive force will be applied to the fitting part on the input/output interface side when attaching or detaching the detachable device, increasing the risk of damaging the electrical connection or mechanical connection. do.

On the detachable device side of the present invention, it is preferable that the male or female types of the plurality of fitting bodies are attached on the same plane. Here, "on the same plane" means that the contact surfaces of the plurality of fitting bodies with the male or female substrate are on the same plane. By arranging the wearable smart device on the same plane, it is effective to prevent the detachable device from falling off when the wearable smart device is subjected to impact or large acceleration due to contact or collision with another object. It gets expensive.

On the clothing-type input/output interface side of the present invention, it is preferable that the contact between the male or female part of the attached fitting body and the cloth or wiring material on the clothing side is through contact, The contact area is preferably 15 square mm or more. The contact area is more preferably 25 square mm or more, even more preferably 37 square mm or more, even more preferably 60 square mm or more, and even more preferably 80 square mm or more. Pressure contact is sufficient for the contact surfaces if sufficient contact pressure can be obtained, but it is preferable to further ensure sufficient electrical contact using a conductive adhesive or the like. By using a flexible conductor on the wiring material side, the pressure contact force can be increased.

In the present invention, the total area of contact between either the male or female part of the fitting body attached to the clothing-type input/output interface side and the fabric or wiring material on the clothing-type input/output interface side is 30 square mm or more. The contact area is preferably 50 square mm or more, more preferably 75 square mm or more, even more preferably 120 square mm or more, even more preferably 160 square mm or more, and still more preferably 200 square mm or more.

The electrical wiring material in the clothing-type input/output interface of the present invention is preferably a stretchable conductor composition.

The stretchable conductor composition in the present invention is composed of at least conductive particles (metal particles or carbon-based particles) and a flexible resin having a tensile modulus of 1 MPa or more and 1000 MPa or less. Further, the amount of the flexible resin blended is 7 to 35% by mass based on the total of the conductive particles and the flexible resin.
The stretchable conductor composition used in the present invention can be obtained by kneading and mixing conductive particles and a flexible resin and molding the mixture into a film or sheet. The stretchable conductor layer of the present invention is preferably formed into a paste or slurry for forming a stretchable conductor by adding a solvent to conductive particles and a flexible resin, and then processed into a sheet or film by coating and drying. You can. Further, after forming into a paste, a predetermined shape can be given by printing.

The conductive particles of the present invention are preferably particles having a particle size of 100 μm or less and made of a substance having a specific resistance of 1×10 −1 Ωcm or less. Examples of substances having a specific resistance of 1×10 −1 Ωcm or less include metals, alloys, carbon, doped semiconductors, and conductive polymers. Conductive particles preferably used in the present invention include metals such as silver, gold, platinum, palladium, copper, nickel, aluminum, zinc, lead, and tin, alloy particles such as brass, bronze, cupronickel, and solder, and silver-coated copper particles. Further, metal-plated polymer particles, metal-plated glass particles, metal-coated ceramic particles, etc. can be used.

In the present invention, it is preferable to mainly use flaky silver particles or amorphous agglomerated silver powder. Here, "mainly used" means to use 90% by mass or more of the conductive particles. Irregularly shaped agglomerated powder is a three-dimensional agglomeration of spherical or irregularly shaped primary particles. Amorphous agglomerated powder and flaky powder are preferable because they have a larger specific surface area than spherical powder and can form a conductive network even with a low filling amount. Since the amorphous agglomerated powder is not in a monodispersed form, the particles are in physical contact with each other, so that it is easy to form a conductive network, which is more preferable.

The particle size of the flaky powder is not particularly limited, but it is preferable that the average particle size (50% D) measured by dynamic light scattering is 0.5 to 20 μm. More preferably, it is 3 to 12 μm. If the average particle diameter exceeds 15 μm, it becomes difficult to form fine wiring, and clogging occurs in screen printing. When the average particle diameter is less than 0.5 μm, if the filling is low, the particles may not be able to contact each other, and the conductivity may deteriorate.

The particle diameter of the amorphous agglomerated powder is not particularly limited, but it is preferable that the average particle diameter (50% D) measured by a light scattering method is 1 to 20 μm. More preferably, it is 3 to 12 μm. When the average particle diameter exceeds 20 μm, dispersibility decreases and it becomes difficult to form a paste. When the average particle diameter is less than 1 μm, the effect as an agglomerated powder is lost, and good conductivity may not be maintained with low filling.

The non-conductive particles in the present invention are particles made of an organic or inorganic insulating substance. The inorganic particles of the present invention are added for the purpose of improving printing characteristics, improving stretch characteristics, and improving coating film surface properties, and are microgels made of inorganic particles such as silica, titanium oxide, talc, alumina, barium sulfate, and resin materials. etc. can be used.

Examples of the flexible resin in the present invention include thermoplastic resins, thermosetting resins, and rubbers having an elastic modulus of 1 to 1000 MPa. Urethane resin or rubber is preferable in order to make the membrane stretchable. Rubbers include urethane rubber, acrylic rubber, silicone rubber, butadiene rubber, nitrile group-containing rubbers such as nitrile rubber and hydrogenated nitrile rubber, isoprene rubber, sulfurized rubber, styrene-butadiene rubber, butyl rubber, chlorosulfonated polyethylene rubber, and ethylene. Examples include propylene rubber and vinylidene fluoride copolymer. Among these, nitrile group-containing rubber, chloroprene rubber, and chlorosulfonated polyethylene rubber are preferred, and nitrile group-containing rubber is particularly preferred. In the present invention, the preferred range of elastic modulus is 2 to 480 MPa, more preferably 3 to 240 MPa, still more preferably 4 to 120 MPa.

The rubber containing a nitrile group is not particularly limited as long as it is a rubber or elastomer containing a nitrile group, but nitrile rubber and hydrogenated nitrile rubber are preferable. Nitrile rubber is a copolymer of butadiene and acrylonitrile, and when the amount of bonded acrylonitrile is large, affinity with metals increases, but rubber elasticity, which contributes to stretchability, decreases. Therefore, the amount of bound acrylonitrile in the acrylonitrile-butadiene copolymer rubber is preferably 18 to 50% by weight, particularly preferably 40 to 50% by weight.

As the urethane resin in the present invention, a urethane rubber containing a polyether polyol or a polyester polyol as a polyol component and an HDI polyisocyanate as an isocyanate component can be exemplified. The urethane rubber of the present invention has a high elongation rate and low permanent tensile strain and residual strain, resulting in a stretchable dielectric composition that has excellent reliability when repeatedly deformed.

Examples of the polyether polyol in the present invention include copolymerization of monomer materials such as polyethylene glycol, polypropylene glycol, polypropylene triol, polypropylene tetraol, polytetramethylene glycol, polytetramethylene triol, and cyclic ethers for synthesizing these. Examples include polyalkylene glycols such as copolymers obtained by polyalkylene glycols, derivatives and modified products obtained by introducing side chains or branched structures into these, and mixtures thereof. Among these, polytetramethylene glycol is preferred. The reason is that it has excellent mechanical properties.

Commercially available products can also be used as the polyether polyol. Specific examples of commercially available products include, for example, PTG-2000SN (manufactured by Hodogaya Chemical Industry Co., Ltd.), polypropylene glycol, Preminol S3003 (manufactured by Asahi Glass Co., Ltd.), and Pandex GCB-41 (manufactured by DIC Corporation).

As the polyester polyol in the present invention, aromatic polyester polyol, aromatic/aliphatic copolymer polyester polyol, aliphatic polyester polyol, and alicyclic polyester polyol can be used. As the polyester polyol in the present invention, either a saturated type or an unsaturated type may be used.

The HDI polyisocyanate in the present invention is hexamethylene diisocyanate (HDI) or a modified product thereof, and is a compound having a plurality of isocyanate groups in the molecule.
The urethane rubber in the present invention is obtained by reacting a mixture containing, in addition to the polyol component and the isocyanate component described above, a chain extender, a crosslinking agent, a catalyst, a vulcanization accelerator, etc., if necessary. But it's okay. In the present invention, the use of sulfur-free crosslinking agents is preferred. Furthermore, the flexible polymeric material of the present invention may contain additives such as plasticizers, antioxidants, antiaging agents, and colorants, dielectric fillers, and the like.

The blending amount of the flexible resin in the present invention is 7 to 35% by mass, preferably 9 to 28% by mass, more preferably 9 to 28% by mass based on the total of the conductive particles, preferably the non-conductive particles added, and the flexible resin. is 12 to 20% by mass.

Conductive yarn can be used as the electrical wiring material in the clothing-type input/output interface of the present invention.
The conductive thread in the present invention refers to a thread having a resistance value of 100Ω or less per 1 cm of thread length. The conductive yarn herein is a general term for conductive fibers, fiber bundles of conductive fibers, twisted yarns, braided yarns, spun yarns, and blended yarns obtained from fibers containing conductive fibers. The conductive threads of the present invention include metal-coated chemical fibers, metal-coated natural fibers, chemical fibers coated with conductive oxides, natural fibers coated with conductive oxides, carbon-based conductive materials ( Chemical fibers coated with graphite, carbon, carbon nanotubes, graphene, etc.), natural fibers coated with carbon-based conductive materials, chemical fibers coated with conductive polymers, natural fibers coated with conductive polymers. Examples include conductive threads obtained from. This type of conductive thread includes a polymer film coated with one or more conductive materials selected from metals, carbon-based conductive materials, conductive metal oxides, and conductive polymers with a width of 800 μm or less. Contains a conductive ultra-fine slit film with thin slits.

The conductive thread in the present invention is a conductive fiber obtained by spinning a polymer kneaded with one or more conductive materials selected from metals, carbon-based conductive materials, conductive metal oxides, and conductive polymers. A conductive thread obtained from
Furthermore, in the present invention. Fine metal wires having a thickness of 250 μm or less, preferably 120 μm or less, more preferably 80 μm or less, even more preferably 50 μm or less can be used as the conductive fiber or conductive thread.
In the present invention, it is particularly preferable to use at least one type of conductive thread selected from metal-coated chemical fibers, fiber bundles impregnated with conductive polymer, and fine metal wires with a thickness of 50 μm or less.

The conductive threads of the present invention are preferably arranged in a garment-type interface with geometric redundancy. Geometric redundancy here means that when two points, point A and point B, are defined in space, the shortest distance between the two points This means that by connecting two points, the connection state can be maintained with a margin even when the distance between two points increases.
Here the redundancy coefficient is
Redundancy coefficient = Y/X
Defined in
The redundancy coefficient in the present invention is 1.41. It is preferably at least 1.8, more preferably at least 2.2, even more preferably at least 2.8. To increase the redundancy coefficient, simply arrange the conductive threads in a zigzag pattern. More specifically, embroidery techniques such as zigzag stitch, chain stitch, cross stitch, feather stitch, etc. can be used. Further, such redundancy can be exhibited not only in the surface direction but also in the thickness direction of the fabric. In the present invention, it is recommended to use a stitch that forms a suitable loop and preferably does not form a knot.

Metal foil can be used as the electrical wiring material in the clothing type input/output interface of the present invention. The metal foil in the present invention is a copper foil having a thickness of 50 μm or less, preferably 25 μm or less, more preferably 15 μm or less, still more preferably 8 μm or less, even more preferably 4 μm or less, and 0.08 μm or more. , phosphor bronze foil, nickel-plated copper foil, tin-plated copper foil, nickel/gold-plated copper foil, aluminum foil, silver foil, and gold foil.
These metal foils can be manufactured by conventional methods such as an electrolytic method, an electroless method, a rolling method, a vapor deposition method, and a sputtering method. Such metal foil can be processed into a predetermined pattern shape by an etching method, a lift-off method, an additive method, a punching method, a laser cutting method, or the like.

It is preferable that the electrical wiring using metal foil in the present invention has a wiring pattern having geometric redundancy. means that when two points, point A and point B, are defined in space, the shortest distance between the two points is X, by connecting the two points using a path Y that is longer than the shortest distance. This means that the connection state can be maintained with sufficient margin even when the distance between points increases.
Here, the redundancy coefficient of electrical wiring using metal foil is:
Redundancy coefficient = Y/X
Defined in The length here is the length of the line passing through the center of a wide track.
The redundancy coefficient of the electrical wiring made of metal foil in the present invention is preferably 1.41 or more, more preferably 1.8 or more, still more preferably 2.2 or more, and even more preferably 2.8 or more. In order to increase the redundancy coefficient, the metal foil may be arranged in a zigzag or sinusoidal shape, or in a repeating horseshoe shape.

The clothing fabric for the clothing-type interface of the present invention is not particularly limited, and any known common clothing fabric may be used. The fabric is a fabric, and examples of the fabric include woven fabrics, knitted fabrics, and non-woven fabrics.Furthermore, resin coatings, coated fabrics impregnated with resin, etc. can also be used as the base material. In addition, synthetic rubber sheets such as neoprene (registered trademark) may also be used as clothing fabrics in some cases. The fabric used in the present invention preferably has stretchability capable of being repeatedly expanded and contracted by 10% or more. Further, it is preferable that the base material of the present invention has a breaking elongation of 50% or more. The base material of the present invention may be a raw cloth, or may be in the form of a ribbon or tape, a braid or a braid, or a sheet of cloth cut from the raw cloth.

When the fabric is a woven fabric (knit), examples thereof include plain weave, twill weave, satin weave, and the like. When the fabric is knitted, for example, flat knitting and its variations, pique knitting, Amundsen knitting, lace knitting, eyelet knitting, plated netting, pile knitting, ribbed netting, ripple knitting, tortoiseshell knitting, blister knitting, Milano rib knitting, Double pique knit, single pique knit, diagonal knit, herringbone knit, punch rome knit, basket knit, tricot knit, half tricot knit, satin tricot knit, double tricot knit, quince cord knit, striped soccer knit, russell knit, Examples include tulle mesh knitting, and variations and combinations thereof. The fabric may be a nonwoven fabric made of elastomer fibers or the like.

The fiber materials that make up these woven and knitted fabrics include natural fibers such as cotton, wool, and hemp, nylon, polyester, polyurethane, polyvinyl acetate, polybenzazole, polyimide, polyaromatic amide, polybenzoxazole, and high molecular weight Chemical synthetic fibers such as polyethylene, blends thereof, etc. can be used.

Examples of forms of clothing-type interfaces that can be used in the present invention include clothing that independently covers the upper body such as shirts, blouses, and sweatshirts, and clothing that independently covers the lower body such as trousers, pants, tights, leggings, and raincoats. Clothes, hats, gloves, arm covers, socks, socks, bras, panties that cover each part of the body individually, one-piece swimsuits, leotards that cover the upper body to the crotch, full body tights It is possible to use clothing that covers the upper and lower body as one body.
Furthermore, according to the present invention, a body-wearing device (helmet, shoes, protective clothing, protector) that includes parts made of fiber materials and in which electrical elements are incorporated can also be used as a clothing-type interface. Examples of these include protective equipment used in martial arts, American football, etc., and protective equipment used at experimental sites, work sites, construction sites, etc.

In the clothing-type interface according to the present invention, it is preferable that the elongation at break of the clothing material used in that part is 70% or less within at least a 10 mm circumference of the electrical connection part. In other words, by arranging a material with relatively low elongation near the electrical connections, the load applied to the electrical connections on the clothing-type interface side during attachment and detachment can be reduced and reliability can be increased.

EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to the following Examples.

<Snap hook>
A snap hook illustrated in FIGS. 1 and 2 was used as a pair of male/female fittings. Snap hooks are available in both types that are attached to the base material by caulking and types that are sewn with thread. The snap hooks shown in Table 1 were adjusted by adjusting the tightness or spring of the female receiving part of the snap hook. The detachment force was measured by attaching the female snap hook to a plate and the male snap hook to a fabric, and using a tensile tester using the jig shown in FIG. 3. The installation area in the table is the bottom surface of the female mold side. As for the hook type, ``spring type'' has a spring inside the female die that holds the male die in place, and ``Rokuwari'' has a hole in the female die divided into six parts, which allows the male die to bend. It is a type that retains its shape.

<Clothing type interface 1>
12 parts by mass of nitrile butadiene rubber with a nitrile content of 40% by mass and a Mooney viscosity of 46,
30 parts by mass of isophorone,
58.0 parts by mass of fine flaky silver powder with an average particle diameter of 6 μm [manufactured by Fukuda Metal Foil and Powder Industries Co., Ltd., trade name Ag-XF301],
were uniformly mixed and dispersed in a three-roll mill to obtain a stretchable conductive layer forming paste AG1.
The obtained stretchable conductive layer forming paste AG1 was applied onto a release PET film using a screen printing method and dried to obtain a stretchable conductive sheet with a thickness of 26 μm having a predetermined pattern. The obtained stretchable conductive sheet was transferred to the back side of a sports shirt using a urethane hot melt sheet, and a predetermined insulating layer was placed on top of it, and electrodes for electrocardiogram measurement were placed on the left and right sides of the chest, and electrodes were placed on the left and right sides of the sternum in the center of the chest. A sports shirt having a pair of terminal portions, that is, two terminal portions, and using a stretchable conductor composition as an electrode and wiring material was obtained. A snap hook was attached to the terminal portion of the obtained sports shirt by caulking or sewing with conductive thread. At this time, a stretchable conductor forming paste AG1 was applied to the snap hook side to assist in conduction and adhesion with the clothing side terminal. Further, a reinforcing cloth having a breaking elongation of 62% was attached to a 25 mm x 60 mm portion including the snap hook portion using a hot melt resin for reinforcement, thereby obtaining a clothing-type interface 1. Note that samples with snap hook intervals of 20 mm and 45 mm were both prepared depending on the subsequent tests.

<Clothing type interface 2>
Twisted nylon fibers (250 denier) were plated with silver by electroless plating. First, as a base treatment for electroless silver plating, the twisted yarn is immersed in a refining agent, washed with water, then immersed in an aqueous solution containing 10 g/liter of stannous chloride and 20 ml/liter of 35% hydrochloric acid, and then washed with water. After imparting properties, 10% by mass of silver was coated using a predetermined amount of an electroless silver plating solution having the following composition.
[Electroless silver plating liquid bath ratio] (5g silver/1 liter)
Tetrasodium ethylenediaminetetraacetate 100 g/1 liter Sodium hydroxide 25 g/1 liter Formalin 50 g/1 liter Silver nitrate (dissolved in 1 liter of water and added dropwise) 15.8 g
50 ml of ammonia water (dissolved in 1 liter of water and dropped) The obtained silver-plated threads were twisted together to obtain a conductive thread (F1) with a resistance value of 120 mΩ per 1 cm of thread length.

First, a conductive carbon paste that would become an electrode surface layer was screen printed in a predetermined pattern on a release PET film having a thickness of 125 μm, and was dried and hardened. Next, a urethane resin ink that would become a stretchable insulating coating layer was screen printed in a predetermined pattern and dried and cured. Next, the electrode part and the terminal part are screen printed using the stretchable conductor forming paste AG1 which will become the main conductor layer, and then the conductive thread F1 is placed between the electrocardiogram measuring electrode and the electrode for attaching the connecting hook. The electrical wiring was arranged in a substantially sinusoidal shape. Note that the period (zigzag pitch) of the sine wave was 3 mm, and the amplitude in the plane direction was 5 mm. Five electrical wires were arranged in parallel. The redundancy factor is 1.8. Next, the entire surface was covered with a hot melt sheet made of urethane resin, the unnecessary parts were cut off, and the part was temporarily attached to the back of the sports shirt, the release PET film was peeled off, and the surface was dried at 115°C for 30 minutes. A sports shirt having electrodes made of carbon paste and wiring made of conductive thread was obtained. Next, snap hooks and reinforcing cloth were attached using the same method as for clothing-type interface 1 to obtain clothing-type interface 2. Note that the predetermined pattern is the same as <Clothing type interface 1>.

<Clothing type interface 3>
Rolled copper foil with a thickness of 9 μm is laminated to a polyester film coated with a weak adhesive, then a predetermined pattern is formed on the copper foil using a dry film resist, and after etching with a cupric chloride solution, a dry film resist is applied. After removing the oxide film on the surface of the copper foil with dilute sulfuric acid, the copper foil was thoroughly washed with ion-exchanged water and dried with dry air to obtain a metal foil F1 having a predetermined redundancy coefficient.
Hereinafter, in <Preparation of Clothes-type Interface 2>, the same operation is performed except that the metal foil F1 is placed instead of the conductive thread, and the clothes-type interface 3 has electrodes whose surfaces are made of carbon paste and wiring made of copper foil. I got it.

<Detachable device 1>
In this example, a chamfered rectangular metal plate with a mass of 40 g was used as a detachable device, and a mold to be paired with a snap hook mold attached to the clothing type interface side was attached at an interval of 20 mm. Hereinafter, it will be referred to as a detachable device 1.

<Detachable device 2>
In this example, a chamfered rectangular metal plate with a mass of 80 g was used as a detachable device, and a mold to be paired with a snap hook mold attached to the clothing type interface side was attached at an interval of 45 mm. Hereinafter, it will be referred to as a detachable device 2.

(Examples 1 to 5, Comparative Examples 1 and 2)
Repeated attachment and detachment tests and vibration tests were conducted using the combinations of snap hooks and clothing-type interfaces shown in Table 2.

<Repeated attachment/detachment test>
Attach the detachable device to the clothing-type interface manually and support the detachable device with your left hand. Hold the terminal part of the clothing-side interface with your right hand at a point about 150 mm away from the right side (when looking at the clothing from the front), and repeat the detachment operation by pulling it in a direction perpendicular to the board surface of the detachable device, and then remove the clothing-side interface. The number of attachment and detachment was counted until continuity between the snap hook and the corresponding electrode for electrocardiogram measurement was interrupted. Note that conduction was judged to be interrupted when the resistance value between the snap hook and the electrode reached 100 kΩ or more. If continuity was maintained, the test was terminated after 1000 attachment/detachment cycles. The results were ranked as follows based on the number of times until shutdown.
Rank 0 1-99 times Rank 1 100-299 times Rank 2 300-999 times or more Rank 3 1000 times or more

<Vibration test>
The clothing-type interface was attached to a mannequin with the detachable device attached, and vibration with a frequency of 60 Hz and an amplitude of 10 mm was applied using a vibration tester, and the time until the detachable device fell off was measured. Note that if the detachable device did not fall off, the test was terminated after 5 minutes. The results were ranked as follows according to the time until dropout.
Rank 0: Less than 3 seconds Rank 1: 3 seconds or more, less than 30 seconds Rank 2: 10 seconds or more, less than 5 minutes Rank 3: 5 minutes or more The results are shown in Table 2.

(Examples 6 to 40, Comparative Examples 3 to 16)
Below, experiments were conducted using the combinations of male/female clothes-side interfaces, detachable devices, and clothes-side snap hooks shown in Table 3, Table 4, Table 5, Table 6, Table 7, Table 8, and Table 9. The results are shown in the respective tables.

(Application example 1)
Using the clothing-type interface used in Example 3, a heart rate sensor WHS-2 manufactured by Union Tool Co., Ltd., which has a wireless data transmission function to a smartphone as a detachable device, is connected, and electrocardiographic signals are sent from WHS-2 at the same time as measurement. The device was configured to send heart rate data to a smartphone, receive heart rate data on an Apple smartphone equipped with the ``myBeat'' app dedicated to the heart rate sensor WHS-2, and display it on the screen. As described above, a Wearabs smart device with a heart rate measurement function was constructed.

The resulting wearable smart device was worn by a driver, and the driver's heart rate was measured by driving an off-road car on roads including unpaved mountain roads for 30 minutes. Furthermore, according to the accelerometer installed in the off-road car, the maximum instantaneous acceleration while driving was 6.7G. The detachable device did not fall off while driving and was able to successfully measure heart rate.

(Application example 2)
Using the clothing-type interface used in Example 18 and using a remote electrocardiogram measuring device manufactured by Polare as a detachable device, a Wearabs smart device having a heart rate measuring function was constructed in the same manner as in Application Example 1.
The resulting wearable smart device was worn by American football players, and their electrocardiograms were measured during a game. The detachable device did not fall off while driving and was able to successfully measure heart rate.

As shown above, the wearable smart device of the present invention has excellent ability to repeatedly attach and detach between a clothing-type interface and a detachable device, and can sufficiently withstand vibration tests. There is a low possibility that the device will fall off, and stable operation can be expected. The wearable smart device of the present invention can be applied not only to the human body but also to animals such as livestock and pets, or to mechanical devices that operate with vibration.

100: Base material 101: Male mold 102: Female mold 201: Cloth base material 202: Plate base material 301: Clip 302: Fixing base 303: Clamp

Claims (8)

A wearable smart device including at least a clothing-type input/output interface and a detachable device, wherein the electrical connection between the clothing-type input/output interface and the detachable device is made with a pair of male molds, at least a portion of which is a conductive material. It is carried out through a fitted body consisting of a female mold, and the detachment force per pair of male and female molds of the said fitted body must be in the range of 0.40 N or more and 7 N or less. A wearable smart device for car drivers with the following features: A wearable smart device including at least a clothing-type input/output interface and a detachable device, wherein the electrical connection between the clothing-type input/output interface and the detachable device is made with a pair of male molds, at least a portion of which is a conductive material. It is carried out through a fitted body consisting of a female mold, and the detachment force per pair of male and female molds of the said fitted body must be in the range of 0.40 N or more and 7 N or less. A wearable smart device for sports. A method for measuring biological information, comprising: acquiring biological information from the clothing-type input/output interface by wearing the wearable smart device according to claim 1 on an adherend, and measuring the biological information using the detachable device. 4. The method for measuring biometric information according to claim 3, wherein biometric information of a driver driving on an unpaved road is measured. A method for measuring biological information, comprising: acquiring biological information from the clothing-type input/output interface by wearing the wearable smart device according to claim 2 on an adherend, and measuring the biological information using the detachable device. 6. The method for measuring biological information according to claim 5, wherein biological information of an exerciser is measured during an exercise involving jumping. Clothing for automobile drivers using the wearable smart device according to claim 1. A sports shirt using the wearable smart device according to claim 2.