JP7000697B2 - Wearable smart device - Google Patents

Description

The present invention relates to a method of electrically connecting a garment-type input / output interface and the detachable device in a wearable smart device including at least a garment-type input / output interface and a detachable device.

In recent years, technology for measuring biological signals and movements of humans and animals by incorporating sensor devices into clothing has been rapidly advancing, and has come to be 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 garment-type wearable smart device is a combination of a garment-type input / output interface having electrodes, sensor devices, wiring, connectors, and the like, and a detachable detachable device. Here, the detachable device is an electronic device that detects, measures, calculates, stores, and communicates to the outside a minute signal obtained from an electrode or a sensor device.
Due to the nature of wearable smart devices worn on the body, they are contaminated by substances of biological origin and dust from the outside world, so they need to withstand washing like ordinary clothes. However, although a general electronic device composed of a conventional electronic circuit has some waterproof function, it has the same high waterproof performance as clothing, detergent, and washing durability that can withstand the drying process. Not prepared. As a result, a realistic and eclectic style of removing the electronic device portion during washing has become commonplace. The same idea applies not only to wearable smart devices but also to products that combine fabrics and electrical elements such as carpet-type seat heaters. (Patent Documents 1 and 2)

Japanese Patent Application Laid-Open No. 2003-77566 JP-A-2015-135723A

Attempts have been made for a long time to embed wiring elements in clothes to give them electronic and electrical functions, but most of them were made by connecting existing connectors to the wiring placed in clothes. For example, a pin jack for audio or a USB terminal. Since such a connector is easy to come off during use and is relatively large in size, the thickness of the connector makes it easy for clothes to partially rub against the skin or to easily get caught in the outside.

The snap-hook type connector as 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 satisfactorily used when attaching and detaching between flexible fabrics. Is. However, when applied to a detachable device intended by the present invention, since a plurality of connection portions are arranged on the rigid housing surface on the device side, the snap hook is required as a deformation function only on the clothing side at the time of attachment / detachment. There is a problem that an excessive force is applied to the mounting portion of the clothes-type input / output interface, and the electrical connection on the clothes-type input / output interface side is easily damaged.

Furthermore, in a situation where the subject moves violently, such as when measuring biometric information during exercise, the inertia of the mass of the detachable device continuously applies an excessive force to the connector on the clothing side, which can easily cause damage to the connector. Problems such as the detachable device falling off may occur when the electrical contact becomes coarse and dense and becomes noise, or when the movement is particularly vigorous.

Furthermore, if the connection terminal provided on the clothing type input / output interface is exposed, the connection terminal may be contaminated with environmental dust, sebum, etc., which may cause a problem that the electrical connection is hindered, and the connection terminal is expensive. If you touch a part with electric potential, it is dangerous because an electric shock may be applied to the adherend through the wiring laid on the interface.

As a result of diligent studies to achieve the above object, the present inventors reduced the contamination of the connection terminal and improved the safety by improving the interface side on the clothing side, and further determined the attachment / detachment strength of the mating type connector. By keeping it within the range of, it is possible to eliminate the generation of noise due to the detachable device being dropped off and the imperfections of the connection part, and to put an excessive load on the clothing type input / output interface side when removing the detachable device. Without giving, we have found a wearable smart device that can be used for a long time.

That is, the present invention has the following configuration.
[1] In a wearable smart device consisting of at least a combination of a garment-type input / output interface and a detachable device, the garment-type gun output interface and the electrical connection portion of the detachable device are made of a cloth having an insulation resistance of 1000 Ω or more in the thickness direction. A wearable smart device that features being installed in a configured pocket.
[2] The electrical connection portion is connected to a fitting body, and the detachment force per set of the male and female molds of the fitting body is in the range of 0.3 N or more and 10 N or less. The wearable smart device according to [1].
[3] The wearable smart device according to [1] or [2], wherein the detachable device has a mass of 2 g or more and 80 g or less.
[4] The wearable smart according to any one of [1] and [3], wherein the male or female type of the fitting body attached to the detachable device side is attached on the same plane. device.
[5] The area of contact between one of the male or female fittings of the fitting body attached to the clothing type input / output interface side and the fabric or wiring material on the clothing side is 15 mm2 or more. The wearable smart device according to any one of [1] to [4] as a feature.
[6] The total area of contact between the male or female type of the fitting body attached to the garment type input / output interface side and the fabric or wiring material on the garment type input / output interface side is 30 mm2 or more. The wearable smart device according to any one of [1] to [5].
[7] The wearable smart device according to any one of [1] to [6], wherein the electrical wiring material in the clothing type input / output interface is an elastic conductor composition.
[8] The wearable smart device according to any one of [1] to [6], wherein the electrical wiring material in the clothing type input / output interface is a conductive thread.
[9] The wearable smart device according to any one of [1] to [6], wherein the electrical wiring material in the clothing type input / output interface is a metal foil.
Smart device.
[10] In any of [1] to [9], the garment-type input / output interface is characterized in that the degree of break elongation of the garment is 70% or less within a range of at least a circumference of 10 mm of the electrical connection portion. The wearable smart device described.

The present invention further preferably includes the following configurations.
[11] A method for measuring biometric information, which comprises measuring biometric information of a driver who is driving a car by using the wearable smart device according to any one of [1] to [10].
[12] A method for measuring biometric information, which comprises measuring biometric information of an athlete during exercise accompanied by jumping by using the wearable smart device according to any one of [1] to [10].
[13] A method for measuring biological information, which comprises measuring biological information of mammals other than humans by using the wearable smart device according to any one of [1] to [10].

The present invention relates to a wearable smart device in which a clothing type input / output interface and a detachable device are at least a component, and the number of electrical signal lines is at least one set of two lines. In this case, a pair or more of electrical contacts are required to connect the garment-side interface and the detachable device. A fitting such as a snap hook can be used as the electrical connection point.
Such fittings usually have exposed electrical contacts. In the present invention, by storing the electrical contact portion in a pocket having a predetermined electrical insulation property, contamination of the electrical connection point by environmental dust, sebum, etc. is reduced, and the electrical terminal is housed in the pocket. This has the effect of reducing the risk of accidental electrical shock.

The fitting body in the present invention is a pair of male / female fitting bodies in which at least a part of the contact surface is made of a conductive material. Such a fitting functions as a so-called connector and has both electrical and mechanical connections. From the viewpoint of ease of attachment / detachment, it is preferable that the male / female type of the fitting has a small desorption force. On the other hand, in order to hold the detachable device so as not to be stably detached from the vibration and acceleration caused by the motion, it is necessary to have a detachable force of a certain level or more according to the mass of the detachable device.
(Hereinafter, an example in which the male type is arranged on the clothing side and the female type is arranged on the detachable device side will be described, but the same composition will be obtained even if the male and female are exchanged, which is within the scope of the present invention.)
However, if the detachable force is set too high because the stability of the detachable device is prioritized, the connection between the male shape of the fitting attached to the garment and the electrical wiring material placed on the garment, especially when removing the device. Or, an excessive load is applied to the connection portion between the male mold and the cloth itself that constitutes the garment, and both electrical and mechanical damages are likely to occur.
In particular, in the case where the structure on the detachable device side is rigid and the female mold of the fitting body is installed on the same plane, the detachment operation is performed by pulling the clothes side, and the detachment force is further fitted. Care is especially needed for breakage, as it makes it easier to concentrate on part of the coalescence.
Within the range of the detachable force of the fitted body in the present invention, both the holding of the detachable device and the prevention of damage to the detachable director are compatible. Further, in the present invention, a particularly high effect can be obtained when the contact area of the fitting body with the clothing fabric or the wiring on the Igu district side satisfies a predetermined condition.
Furthermore, a high effect can be obtained when the mass of the detachable device satisfies a predetermined condition.

FIG. 1 is an example of a male / 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 fittings used in the present invention. FIG. 3 is a schematic schematic diagram showing a state of measuring the desorption force of a pair of male / female fittings in the present invention. FIG. 4 is an example of the conductor pattern for electrocardiographic measurement of the present invention.

The present invention is a wearable smart device. The wearable smart device in the present invention is configured by combining a garment-type input / output interface and a detachable device. Both are electrically and mechanically joined to function as a wearable smart device.
A wearable smart device is an electronic device that is attached to and used on an adherend, preferably at least one or more functions selected from detection, storage, arithmetic processing, communication, and display of signals containing information about the adherend. And / or an electronic device that exerts some electrical, physiological, or mechanical action on the adherend.
Here, the adherend is not particularly limited, and examples thereof include humans, animals (livestock, pet animals), and mechanical devices having at least mechanically moving parts.
In addition, wearable literally means to wear clothes, and further includes directly or indirectly attaching (patching) to the adherend, swallowing, and burying.

The garment-type input / output interface in the present invention is a garment (including outerwear, underwear, tops, bottoms, socks, gloves, hats, etc.) mainly made of a fiber material, or a body including a part made of a fiber material. Wearing equipment (helves, shoes, protective clothing, protectors) with electrical elements incorporated. The electrical elements are, but are not limited to, electrical wiring for transmitting electrical signals or power, sensor functions for collecting information from the adherend of the clothing type input / output interface, the adherend and / or surroundings. Sensor function for collecting information, or GPS function for indicating the position of electrodes and adherends, sensor function for detecting the movement of adherends, information display function, power supply function, communication function (antenna), heating function (Heater), cooling function (thermoelectric element), storage function, information processing function, calculation function, etc., or a part of them.
The present invention preferably handles at least a garment-type input / output interface including electrodes and electrical wiring for collecting biometric information of the adherend. Further, the interface of the present invention may be provided with both input / output functions, may have only an input function, or may have only an output function.

The detachable device in the present invention is electrically and mechanically joined to a garment-type interface to form a wearable smart device. The detachable device and the clothing type input / output interface transmit signals and power to each other to complete the function as a wearable smart device.
As a typical example in the present invention, for example,
<1> The clothes-type input / output interface has electrodes and wiring for measuring bioelectric potential, and the detachable device has potential measuring function, information processing function, and communication function, and measures and stores the electrocardiographic 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 clothes-type input / output interface has an electric heater and has a power supply and a control function on the detachable device side.
<3> The clothes-type input / output interface has a function to convert the deformation of the body into a change in the amount of electricity due to expansion and contraction or distortion, and measures the amount of electricity based on the deformation of the body on the detachable device side, and stores or external terminals or networks. 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, and still more preferably 5 g or more and 50 g or less. In many cases, the power supply device occupies a large mass in the detachable device, and if the mass of the detachable device is made lighter than necessary, the operating time is shortened. Further, when the mass of the detachable device exceeds a predetermined range, the inertia increases, and the risk of the adherend falling off during operation increases.

In the present invention, the garment-type input / output interface has at least a pair of electrical contacts for connecting the detachable device. In the present invention, it is preferable to provide at least a pair of electrical contacts selected from a pair of 20 mm ± 1 mm intervals, a pair of 38 mm ± 1 mm intervals, and a pair of 45 mm ± 2 mm intervals. The interval here is the distance between the centers of the male or female type of each fitting.

In the present invention, such an electrical connection is placed in a pocket made of a cloth having an insulation resistance of 1000 Ω or more in the thickness direction. Here, the insulation resistance is determined by applying 500 volt DC between the center electrode (d1) for volume resistivity measurement specified in 6.4.1.1 of IEC62899-201 and the counter electrode for 1 minute. The resistance value of.

In the present invention, the electrical connection between the garment-type input / output interface and the detachable device is performed via a fitting composed of a pair of male and female molds in which at least a part of the contact surface is a conductive material. Will be. Such a fitting has an aspect as a mechanical joining at the same time, but in the present invention, a combination with a mechanical joining method other than the joining by the fitting may be used.
In the present invention, either the male or female type of the fitting 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 that the number of fitted bodies in the present invention is preferably a plurality.
The plurality of fittings may be installed by aligning males and females on the clothing type input / output interface side, or may be installed by combining male and female types. Such a form is effective when the plus or minus of the electrical connection must be determined. Further, fitting bodies having different sizes of fitting portions can be used in combination.

The desorption force of the male and female types of the fitted body in the present invention is in the range of 0.3 N or more and 10 N or less. This desorption force is defined as the desorption force when the male mold is pulled in the direction perpendicular to the joint surface of the female mold. The lower limit of the desorption force of the male and female types of the fitted body in the present invention is preferably 0.4 N or more, more preferably 0.8 N or more, and further preferably 1.2 N or more. The upper limit of the desorption force is preferably 9N or less, more preferably 8N or more, and further preferably 7N or less.
If the desorption force falls below a predetermined range, the detachable device may fall off when the adherend moves violently. If the detachable force exceeds the specified range, an excessive force will be applied to the fitting mounting part on the input / output interface side when the detachable device is attached or detached, increasing the risk of damaging the electrical connection or mechanical connection. do.

On the detachable device side in the present invention, it is preferable that a plurality of male or female fittings are mounted on the same plane. Here, "on the same plane" means that the contact surfaces of a plurality of fitted bodies with male or female substrates are on the same plane. By arranging them on the same plane, the effect of preventing the detachable device from falling off when the adherend wearing the wearable smart device comes into contact with or collides with another object and is subjected to impact or large acceleration is effective. It gets higher.

On the garment type input / output interface side in the present invention, the contact between each of the male or female type of the attached fitting and the cloth or wiring material on the garment side is preferably surface contact. The contact area is preferably 15 mm2 or more. The contact area is more preferably 25 mm2 or more, further preferably 37 mm2 or more, further preferably 60 mm2 or more, still more preferably 80 mm2 or more. When sufficient contact pressure can be obtained, pressure contact is sufficient for the contact surface, but it is more preferable to secure sufficient electrical contact with a conductive adhesive or the like. By using a flexible conductor on the wiring material side, the pressure contact force can be increased.

The total area of contact between either the male or female type of the fitting attached to the garment type input / output interface side in the present invention and the fabric or wiring material on the garment type input / output interface side shall be 30 mm2 or more. Is more preferable, 50 square mm or more is further preferable, the contact area is further preferably 75 square mm or more, 120 square mm or more is further preferable, 160 square mm or more is further preferable, and 200 square mm or more is still more preferable.

The electrical wiring material in the clothing type input / output interface in the present invention is preferably an elastic 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 elastic modulus of 1 MPa or more and 1000 MPa or less. The blending amount of the flexible resin is 7 to 35% by mass with respect to the total of the conductive particles and the flexible resin.
The elastic conductor composition used in the present invention can be obtained by kneading and mixing conductive particles and a flexible resin and molding them into a film or a sheet. The stretchable conductor layer of the present invention is preferably processed into a sheet or film by coating and drying after being made into a paste or slurry for forming a stretchable conductor by adding a solvent or the like to conductive particles and a flexible resin. Can be done. Further, it is also possible to give a predetermined shape by printing after making a paste.

The conductive particles of the present invention are preferably particles having a specific resistance of 1 × 10-1 Ωcm or less and having a particle diameter of 100 μm or less. Examples of the substance having a specific resistance of 1 × 10-1 Ωcm or less include metals, alloys, carbons, doped semiconductors, and conductive polymers. The 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, white copper and solder, and silver-coated copper. Hybrid grains, as well as metal-plated polymer particles, metal-plated glass particles, metal-coated ceramic particles, and the like can be used.

In the present invention, it is preferable to mainly use flake-shaped silver particles or amorphous aggregated silver powder. It should be noted that the term "used mainly" here means that 90% by mass or more of the conductive particles are used. The amorphous agglomerated powder is a three-dimensional aggregate of spherical or amorphous primary particles. Amorphous agglomerated powder and flake-like powder have a larger specific surface area than spherical powder and the like, and are preferable because they can form a conductive sol work even with a low filling amount. Since the amorphous agglomerated powder is not in the form of monodisperse, it is more preferable because the particles are in physical contact with each other and easily form a conductive sol work.

The particle size of the flake-like powder is not particularly limited, but an average particle size (50% D) measured by a dynamic light scattering method is preferably 0.5 to 20 μm. More preferably, it is 3 to 12 μm. If the average particle size exceeds 15 μm, it becomes difficult to form fine wiring, and clogging occurs in the case of screen printing or the like. If the average particle size is less than 0.5 μm, the particles cannot be contacted with each other at low filling, and the conductivity may deteriorate.

The particle size of the amorphous agglomerated powder is not particularly limited, but the average particle size (50% D) measured by the light scattering method is preferably 1 to 20 μm. More preferably, it is 3 to 12 μm. If the average particle size exceeds 20 μm, the dispersibility deteriorates and it becomes difficult to make a paste. If the average particle size is less than 1 μm, the effect as 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, stretching characteristics, and coating film surface properties, and are made of inorganic particles such as silica, titanium oxide, talc, alumina, barium sulfate, and a resin material. Etc. can be used.

Examples of the flexible resin in the present invention include thermoplastic resins, thermosetting resins, rubbers and the like having an elastic modulus of 1 to 1000 MPa. Urethane resin or rubber is preferable in order to develop the elasticity of the film. Examples of rubber include urethane rubber, acrylic rubber, silicone rubber, butadiene rubber, nitrile group-containing rubber such as nitrile rubber and hydride nitrile rubber, isoprene rubber, sulfide rubber, styrene-butadiene rubber, butyl rubber, chlorosulfonated polyethylene rubber, and ethylene. Examples thereof include 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 range of the elastic modulus preferable in the present invention 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 containing a nitrile group or an elastomer, but nitrile rubber and hydrogenated nitrile rubber are preferable. Nitrile rubber is a copolymer of butadiene and acrylonitrile, and when the amount of bound acrylonitrile is large, the affinity with the metal increases, but the rubber elasticity that contributes to elasticity decreases. Therefore, the amount of bonded acrylonitrile in the acrylonitrile butadiene copolymer rubber is preferably 18 to 50% by mass, particularly preferably 40 to 50% by mass.

Examples of the urethane resin in the present invention include urethane rubbers containing a polyether polyol or a polyester polyol as a polyol component and an HDI-based polyisocyanate as an isocyanate component. The urethane rubber of the present invention has a high elongation rate and has a small tensile permanent strain and a small residual strain, so that it is a stretchable dielectric composition having excellent reliability when repeatedly deformed.

As the polyether polyol in the present invention, for example, a monomer material such as polyethylene glycol, polypropylene glycol, polypropylene triol, polypropylene tetraol, polytetramethylene glycol, polytetramethylenetriol, and a cyclic ether for synthesizing these is copolymerized. Examples thereof include polyalkylene glycols such as copolymers thus obtained, derivatives into which side chains are introduced or branched structures are introduced, modified products, and mixtures thereof. Of these, polytetramethylene glycol is preferred. The reason is that it has excellent mechanical properties.

As the above-mentioned polyether polyol, a commercially available product can also be used. Specific examples of commercially available products include PTG-2000SN (manufactured by Hodogaya Chemical Co., Ltd.), polypropylene glycol, Preminol S3003 (manufactured by Asahi Glass Co., Ltd.), Pandex GCB-41 (manufactured by DIC Corporation), and the like.

As the polyester polyol in the present invention, an aromatic total polyester polyol, an aromatic / aliphatic copolymerized polyester polyol, an aliphatic polyester polyol, and an 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-based 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 a chain extender, a cross-linking agent, a catalyst, a vulcanization accelerator and the like, if necessary, in addition to the above-mentioned polyol component and the above-mentioned isocyanate component. But it's okay. In the present invention, it is preferable to use a sulfur-free cross-linking agent. Further, the flexible polymer material of the present invention may contain additives such as a plasticizer, an antioxidant, an antioxidant, a colorant, a dielectric filler 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 and the flexible resin to be added. Is 12 to 20% by mass.

A conductive thread can be used as the electrical wiring material in the clothing type input / output interface in the present invention.
The conductive yarn in the present invention means a yarn having a resistance value of 100 Ω or less per 1 cm of yarn length. Here, the conductive yarn is a general term for a conductive fiber, a fiber bundle of the conductive fiber, a twisted yarn obtained from a fiber containing the conductive fiber, a braided yarn, a spun yarn, and a blended yarn. As the conductive yarn of the present invention, metal-coated chemical fiber, metal-coated natural fiber, chemical fiber more coated with conductive oxide, natural fiber coated with conductive oxide, carbon-based conductive material ( 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 of conductive threads obtained from the above can be illustrated. For this type of conductive yarn, a polymer film having a polymer film coated with one or more conductive materials selected from metals, carbon-based conductive materials, conductive metal oxides, and conductive polymers is 800 μm or less in width. Includes a conductive ultrafine slit film with fine slits.

The conductive yarn 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. Can be used as a conductive thread obtained from.
Further in the present invention. A metal fine wire having a thickness of 250 μm or less, preferably 120 μm or less, more preferably 80 μm or less, still more preferably 50 μm or less can be used as the conductive fiber or the conductive thread.
In the present invention, it is particularly preferable to use at least one kind of conductive yarn selected from metal-coated chemical fibers, fiber bundles impregnated with a conductive polymer, and metal fine wires having a thickness of 50 μm or less.

The conductive yarn in the present invention is preferably arranged in a clothing type input / output interface with geometric redundancy. Here, geometric redundancy means 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 space. By connecting the two points, the connected state is maintained with a margin even when the distance between the two points is extended.
Here is the redundancy factor
Redundancy coefficient = Y / X
Defined in.
The redundancy coefficient in the present invention is 1.41. The above is preferable, 1.8 or more is further preferable, 2.2 or more is still preferable, and 2.8 or more is further preferable. In order to increase the redundancy coefficient, the conductive threads may be arranged in a zigzag manner. More specifically, zigzag stitches, chain stitches, cross stitches, feather stitches, etc., which are embroidery methods, 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 stitches in a form in which loops are appropriately formed and knots are not preferably formed.

A metal foil can be used as the electrical wiring material in the clothing type input / output interface in 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, still more preferably 4 μm or less, and 0.08 μm or more. , Phosphorus bronze foil, nickel-plated copper foil, tin-plated copper foil, nickel / gold-plated copper foil, aluminum foil, silver foil, and at least one metal foil selected from gold foil is preferable.
These metal foils can be manufactured by conventional methods such as an electrolytic method, a non-electrolytic method, a rolling method, a vapor deposition method, and a sputtering method. The metal leaf 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.

The electrical wiring using the metal foil in the present invention preferably has a wiring pattern having geometric redundancy. Means that when two points A and B are defined in space, two points are connected by using a path Y longer than the shortest distance with respect to the shortest distance X between the two points. It means that the connected state is maintained with a margin even when the distance between points is extended.
Here, the redundancy coefficient of electrical wiring with metal leaf is
Redundancy coefficient = Y / X
Defined in. The length here is the length of the line passing through the center of the line if it has a width.
The redundancy coefficient of the electric wiring by the 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, still more preferably 2.8 or more. To increase the redundancy coefficient, the metal leaf may be arranged in a zigzag, sinusoidal, or repeated horseshoe shape.

As for forming the garment fabric and the pocket in the garment type input / output interface of the present invention, basically known and general garment fabric may be used. The cloth is a cloth, and examples of the cloth include a woven fabric, a knitted fabric, and a non-woven fabric, and a resin coated cloth, a coated cloth impregnated with a resin, and the like can also be used as a base material. In some cases, synthetic rubber sheets such as neoprene (registered trademark) can also be used as clothing fabrics. The fabric used in the present invention preferably has stretchability capable of repeatedly expanding and contracting by 10% or more. Further, the substrate of the present invention preferably has a breaking elongation of 50% or more. The base material of the present invention may be a cloth cloth, a ribbon, a tape, a braid, a net, or a single-wafer cloth cut from the cloth.

When the cloth is a woven fabric (knit), for example, plain weave, twill weave, satin weave, and the like can be exemplified. When the fabric is knitted, for example, flat knitting and its deformation, Kanoko edition, Amunzen edition, lace edition, eyelet edition, splicing yarn edition, pile edition, rib net, ripple edition, turtle shell edition, blister edition, Milan rib edition, Double picket edition, single picket knitting, diagonal edition, heliborn edition, punch roma edition, basket edition, tricot edition, half tricot edition, satin tricot edition, double tricot edition, quinz cord edition, striped soccer edition, Russell edition, Examples of tulle mesh knitting and their variations / combinations can be given. The cloth may be a non-woven fabric made of an elastomer fiber or the like.

The fiber materials that make up these woven fabrics and knitting include natural fibers such as cotton, wool, and linen, nylon, polyester, polyurethane, polyvinyl acetate, polybenzazole, polyimide, polyaromatic amide, polybenzoxazole, and high molecular weight. Chemically synthesized fibers such as polyethylene and blended products thereof can be used.

In the present invention, at least the insulation resistance of the fabric constituting the pocket is preferably 1000 Ω or more in the thickness direction. The insulation resistance is preferably 10 kΩ or more in the thickness direction, more preferably 100 kΩ or more, and further preferably 1 MΩ or more. Here, the insulation resistance is a value measured in an environment of 25 ° C. ± 2 ° C. and 60% ± 10% RH.
In the present invention, it is preferable to use a dough that shows the same value as the initial insulation resistance measured after the dough is immersed in artificial sweat liquid for 24 hours, washed with water and dried.

As an example of the form of the garment type input / output interface that can be used in the present invention, the lower body is independently covered such as clothes, trousers, pants, tights, leggings, and trenka that independently cover the upper body such as a shirt, blouse, and trainer. Clothing to cover, hats, gloves, arm covers, socks, socks, brassieres, clothing that individually covers each part of the body, such as panty shorts, one-piece swimwear, clothing that covers from the upper body to the crotch, such as leggings, You can use clothes that cover the upper and lower body together, such as full-body tights.
Further, in the present invention, a body-worn device (helmet, shoes, protective clothing, protector) including a part made of a fiber material, which incorporates an electrical element, can also fall into the form of a garment-type input / output interface. Examples of these include armor used in martial arts, American football, etc., and protective equipment used in experimental sites, work sites, construction sites, and the like.

In the garment-type input / output interface of the present invention, it is preferable that the garment material used for the electrical connection portion has a breaking elongation of 70% or less within a range of at least 10 mm around the electrical connection portion. That is, by arranging a material having a relatively low degree of elongation in the vicinity of the electrical connection portion, the load applied to the electrical connection portion existing on the clothing type input / output interface side at the time of attachment / detachment can be reduced, and the reliability can be improved.

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

<Snap hook>
The snap hooks exemplified in FIGS. 1 and 2 were used as a pair of male / female fittings. For snap hooks, both a type that is attached to the base material by caulking and a type that is sewn with thread are prepared. The snap hook shown in Table 1 was adjusted by adjusting the tightness of the female mold receiving portion of the snap hook or the spring. The desorption force was measured with a tensile tester using the female mold of the snap hook as a plate material and the male mold as a cloth, and using the jig shown in FIG. The installation area in the table is the bottom surface on the female mold side. In addition, the hook type is a type that "spring-loaded" has a spring inside the female mold and holds it in a shape that sandwiches the male mold, and the "60%" is a type in which the circumference of the female mold hole is divided into six parts, and the male mold is bent. It is a type that holds the type.

<Pocket fabric>
The sports shirt fabric used as the material for the garment type input interface was laminated with a hot melt urethane sheet, and the fabric was used as the pocket fabric. The initial insulation resistance of the pocket fabric is 500 kΩ, soaked in artificial sweat at room temperature for 24 hours, washed with deionized water, and dried in a room at 25 ° C ± 2 ° C and humidity 60% ± 10% for 24 hours. The insulation resistance of was 300 kΩ.

<Clothing type input / output interface 1>
12 parts by mass of nitrile butadiene rubber having a nitrile amount of 40% by mass and Mooney viscosity of 46,
Isophorone 30 parts by mass,
Fine flake-shaped silver powder with an average particle diameter of 6 μm [Product name Ag-XF301 manufactured by Fukuda Metal Foil Powder Industry Co., Ltd.] 58.0 parts by mass,
Was uniformly mixed and dispersed with a three-roll mill to obtain a stretchable conductive layer forming paste AG1.
The obtained stretchable conductive layer forming paste AG1 was applied and dried in the form of a release PET film by a screen printing method to obtain a stretchable conductor sheet having a pattern shown in FIG. 4 and having a thickness of 28 μm. The obtained elastic conductor sheet was transferred to the back side of the sports shirt by a urethane hot melt sheet, and a predetermined insulating layer was overlapped to obtain a sports shirt having an electrocardiographic measurement electrode and an electrical connection terminal. Snap hooks (male) were attached to the terminals of the obtained sports shirt by caulking or sewing with a conductive thread so as to have an interval of 20 mm. At that time, the stretchable conductor forming paste AG1 was applied to the snap hook side to assist the conduction and adhesion with the clothes side terminal. Furthermore, a reinforcing cloth with a breaking elongation of 62% is attached to the 25 mm × 60 mm part including the snap hook part with hot melt resin to reinforce it, and the pocket fabric is sewn with an insulating thread and attached to the terminal part. A pocket for storing the detachable device was created, and a garment-type input / output interface 1 was obtained.

<Clothing type input / output interface 2>
Nylon fiber plying (250 denier) was silver-plated by an electroless plating method. 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 to cause a catalyst. After imparting the property, 10% by mass of silver was coated with an electroless silver plating solution having the following composition in a predetermined amount.
[Electroless silver plating solution bath ratio] (silver 5 g / 1 liter)
Ethylenediaminetetraacetic acid tetrasodium 100 g / 1 liter Sodium hydroxide 25 g / 1 liter Formalin 50 g / 1 liter Silver nitrate (dissolved in 1 liter of water and dropped) 15.8 g
Ammonia water (dissolved in 1 liter of water and dropped) 50 ml of the obtained silver-plated yarn was twisted to obtain a conductive yarn (F1) having a resistance value of 120 mΩ per 1 cm of yarn length.

First, a conductive carbon paste to be a surface layer of an electrode for electrocardiography was screen-printed on a release PET film having a thickness of 125 μm in a predetermined pattern, and dried and cured. Next, the urethane resin ink to be the elastic insulating coating layer was screen-printed on 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 is the main conductor layer, and the whole is covered with a hot melt sheet made of urethane resin, and unnecessary parts are cut off to form a sports shirt. Temporarily adhered to the back side, the release PET film was peeled off, and further dried at 115 ° C. for 30 minutes to obtain a sports shirt having an electrocardiographic measurement electrode and a terminal portion for attaching a connection hook. Subsequently, the conductive thread F1 was embroidered in a zigzag manner between the electrocardiographic measurement electrode and the terminal portion for attaching the connection hook to form an electric wiring. The zigzag pitch was 3 mm, and the amplitude in the plane direction was 5 mm. Twenty electric wires were arranged so as to be parallel. The redundancy factor is 1.8.
Next, a snap hook, a reinforcing cloth, and a pocket were attached by the same method as the clothes-type input / output interface 1, to obtain a clothes-type input / output interface 2.

<Clothing type input / output interface 3>
A rolled copper foil having a thickness of 9 μm is laminated on a polyester film coated with a weak adhesive, then a pattern shown in FIG. 4 is formed on the copper foil using a dry film resist, etched with a cupric chloride solution, and then dried. The film resist was alkali-peeled, the oxide film on the surface of the copper foil was removed with dilute sulfuric acid, thoroughly washed with ion-exchanged water, and then dried with dry air to obtain a metal foil F1 having a predetermined redundancy coefficient. ..
The obtained metal foil is attached to a sports shirt using a hot melt sheet, carbon paste is printed on the electrocardiographic measurement electrode part, and the entire surface except the carbon paste part and the snap hook attachment part is a single-sided hot melt type urethane. Covered with a sheet.
Next, a snap hook, a reinforcing cloth, and a pocket were attached by the same method as the clothes-type input / output interface 1, to obtain a clothes-type input / output interface 3.

<Clothing type input / output interface 4>
A garment-type interface 4 was obtained by operating in the same manner as the garment-type input / output interface 1 except that the snap hook was a female and the interval was 45 mm.

<Detachable device 1>
In this embodiment, a chamfered rectangular metal plate having a mass of 40 g was regarded as a detachable device, and molds paired with the snap hook molds attached to the clothes type input / output interface side were attached at intervals of 20 mm. Hereinafter referred to as a detachable device 1.

<Detachable device 2>
In this embodiment, a chamfered rectangular metal plate having a mass of 80 g was regarded as a detachable device, and molds paired with the snap hook molds attached to the clothes type input / output interface side were attached at intervals of 45 mm. Hereinafter referred to as a detachable device 2.

(Examples 1 to 28)
Using the combination of the snap hook and the clothing type input / output interface shown in Tables 2 to 5, repeated attachment / detachment test, vibration test, and electric shock test were performed.

<Repeat attachment / detachment test>
Manually attach the detachable device to the clothes-type input / output interface, and grab the detachable device in the pocket with your left hand. Hold the terminal part of the clothes side interface (when looking at the clothes from the front) about 150 mm away from the bottom with your right hand, and pull out the detachable device from the pocket to repeatedly remove it, and the snap hook of the clothes side interface The number of attachments and detachments until the continuity between the and the corresponding electrocardiographic measurement electrode was cut off was counted. It should be noted that the interruption of continuity was judged to be interrupted when the resistance value between the snap hook and the electrode reached 100 kΩ or more. When continuity was maintained, the test was terminated after 1000 attachments and detachments. The results were ranked as follows according to the number of times until blocking.
Rank 0 1 to 99 times Rank 1 100 to 299 times Rank 2 300 to 999 times or more Rank 3 1000 times or more

<Vibration test>
The clothes-type input / output interface was attached to the mannequin with the detachable device attached, and vibration with an amplitude of 10 mm was applied at a frequency of 60 Hz with a vibration tester, and the time until the detachable device fell off was measured. If the detachable device did not fall off, the test was terminated in 5 minutes. The results were ranked as follows according to the time to drop out.
Rank 0 Less than 3 seconds Rank 1 3 seconds or more, less than 30 seconds Rank 2 10 seconds or more and less than 5 minutes Rank 3 5 minutes or more

<Electric shock test>
Attach the clothing type input / output interface to the mannequin with the detachable device attached, and push a pair of metal terminals of AC100 volts (60 Hz) (the tip is a substantially spherical R0.5 mm from the top of the pocket to the detachable device attachment part). It was applied and the presence or absence of a short circuit was examined. The results are shown in Tables 2 to 5.

As described above, the wearable smart device of the present invention prevents electric shock from the outside, has excellent repetitive attachment / detachment between the clothing type input / output interface and the detachable device, and is sufficiently suitable for vibration test. Since it can withstand, it is unlikely that the detachable device will fall off during the exercise of the wearer, and stable operation can be expected. In addition, it can be installed with confidence even in places where there is a risk of electric shock, such as construction sites. The wearable smart device of the present invention can be applied not only to a human body as an adherend, but also to animals such as livestock and pet animals, or mechanical devices that perform operations accompanied by vibration.

100: Base material 101: Male type 102: Female type 201: Cloth base material 202: Plate base material 301: Clip 302: Fixed base 303: Clamp 500: Conductor pattern 501: Connection terminal 502: Electrode measurement electrode portion 600 :pocket

Claims (10)

At least in a wearable smart device consisting of a combination of a garment-type input / output interface and a detachable device, the garment-type input / output interface and the electrical connection portion of the detachable device are installed in a pocket made of cloth .
The fabric had an initial insulation resistance value of 500 kΩ or more, was immersed in an artificial sweat solution for 24 hours, washed with deionized water, and dried in a room at 25 ° C. ± 2 ° C. and a humidity of 60% ± 10% for 24 hours. The subsequent insulation resistance value is 300 kΩ or more,
A wearable smart device characterized in that the clothing type input / output interface and the detachable device are directly connected by the electrical connection portion . The claim is characterized in that the electrical connection portion is due to a fitting body connection, and the desorption force per set of the male and female molds of the fitting body is in the range of 0.3 N or more and 10 N or less. The wearable smart device according to 1. The wearable smart device according to claim 1 or 2, wherein the detachable device has a mass of 2 g or more and 80 g or less. The wearable smart device according to any one of claims 1 to 3, wherein the male or female type of the fitting body attached to the detachable device side is attached on the same plane. It is characterized in that the area of contact between one of the male or female fittings of the fitting body attached to the clothing type input / output interface side and the fabric or wiring material on the clothing side is 15 square mm or more. The wearable smart device according to any one of claims 1 to 4. The feature is that the total area of contact between either the male or female type of the fitting body attached to the garment type input / output interface side and the fabric or wiring material on the garment type input / output interface side is 30 mm2 or more. The wearable smart device according to any one of claims 1 to 5. The wearable smart device according to any one of claims 1 to 6, wherein the electrical wiring material in the clothing type input / output interface is an elastic conductor composition. The wearable smart device according to any one of claims 1 to 6, wherein the electrical wiring material in the clothing type input / output interface is a conductive thread. The wearable smart device according to any one of claims 1 to 6, wherein the electrical wiring material in the clothing type input / output interface is a metal foil.
Smart device. The wearable according to any one of claims 1 to 9, wherein in the garment-type input / output interface, the degree of break elongation of the garment is 70% or less within a range of at least a circumference of 10 mm of the electrical connection portion. Smart device.

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