JP6867408B2 - Wearable textiles and footwear - Google Patents

Description

One embodiment of the present invention relates to a wearable textile product and footwear including the wearable textile product.

Conventionally, many proposals have been made for footwear for correcting walking (see Patent Document 1 and Patent Document 2).

Japanese Unexamined Patent Publication No. 2005-224335 JP-A-2007-130369

However, all of these footwear have a complicated structure, and there are few designs and types, so that the user's choice range is quite limited. In addition, it is difficult to give ordinary footwear a function of correcting walking afterwards.

Therefore, one embodiment of the present invention aims to provide a wearable textile product that can be adapted to a product (shoes, etc.) selected by a user and that corrects walking when worn.

The wearable textile product of one embodiment according to the present invention includes a cloth-like charge generating portion including a charge generating thread that generates an electric charge by an external energy, and a non-charge generating thread that does not generate an electric charge by an external energy. It is provided with a cloth-like non-charge generating portion.

Since the wearable fiber product of one embodiment according to the present invention includes a charge generation unit and a non-charge generation unit, when energy is applied from the outside, the charge can be generated only by the charge generation unit. Therefore, it is possible to partially generate an electric charge with a simple structure in which the electric charge generating portion in which the electric charge generating yarn is woven is arranged only in a necessary place. As a result, the wearable fiber product of the present invention can generate an electric charge as required at the time of mounting. For example, the generated electric charge can give an electrical stimulus to the user's body to correct walking.

According to one embodiment of the present invention, it is possible to realize a wearable fiber product that can be adapted to a product (shoes or the like) selected by a user and corrects walking when worn.

FIG. 1A is a diagram showing the configuration of the piezoelectric thread 1, and FIG. 1B is a plan view of the piezoelectric film 10. 2 (A) and 2 (B) are views showing the relationship between the uniaxial stretching direction of polylactic acid, the electric field direction, and the deformation of the piezoelectric film 10. It is a figure which shows the piezoelectric thread 1 when an external force is applied. FIG. 4A is a schematic plan view of the insole 100, and FIG. 4B is a schematic cross-sectional view of the sock 101. 5 (A) is a schematic view of the sock 102 according to the third embodiment, FIG. 5 (B) is a schematic view of the supporter 103 according to the fourth embodiment, and FIG. 5 (C) is a schematic view of the supporter 103 according to the fourth embodiment. 5 is a schematic view of a moisturizing sanitary material 104 according to the fifth embodiment. FIG. 6A is a diagram for explaining the sock 105 according to the sixth embodiment. FIG. 6B is a diagram for explaining the sock 106 according to the seventh embodiment. 7 (A) and 7 (B) are diagrams for explaining the structure of the charge generating portion 52 of the sock 105 according to the sixth embodiment, respectively. FIG. 8A is a diagram for explaining the shoe 107 according to the eighth embodiment. FIG. 8B is a diagram for explaining the capacitance generated in the shoe 107. FIG. 9A is a diagram for explaining the shoe 108 according to the modified example of the eighth embodiment. FIG. 9B is a diagram for explaining the capacitance generated in the shoe 108. FIG. 10 is a diagram for explaining the shoe 109 according to the ninth embodiment. 11 (A) to 11 (C) are views for explaining the tightening operation of the shoe 109. FIG. 12 is a block diagram of the control circuit in the shoe 109. FIG. 13 is a diagram for explaining the clothing 120 according to the tenth embodiment.

The wearable textile product according to the present embodiment has a cloth-like charge generating portion including a charge-generating thread that generates an electric charge by an external energy and a cloth-like charging part including a non-charge-generating thread that does not generate an electric charge by an external energy. It includes a non-charge generator. For convenience of explanation, the charge generating yarn will be described, and then footwear and the like provided with the wearable fiber product will be described.

FIG. 1A is a partially exploded view showing the configuration of the piezoelectric thread 1, and FIG. 1B is a plan view of the piezoelectric film 10. The piezoelectric thread 1 is an example of a charge generating thread that generates an electric charge by energy from the outside.

The piezoelectric thread 1 is formed by winding a piezoelectric film 10 around a core thread 11. The piezoelectric film 10 is an example of a piezoelectric material. The core yarn 11 is appropriately selected from natural fibers or chemical fibers. Natural fibers or chemical fibers include plant fibers, animal fibers, polylactic acid and the like. The plant fiber is, for example, cotton or hemp. When polylactic acid is used for the core yarn 11, the core yarn 11 does not need to be particularly piezoelectric polylactic acid. As will be described later, when polylactic acid is used for the piezoelectric film 10, the material is the same as that of the core yarn 11, so that the affinity is high. Chemical fibers include, for example, synthetic fibers, glass fibers, carbon fibers and the like. Chemical fibers are tougher than natural fibers.

Further, the core thread 11 may be a conductive thread having conductivity. When the core thread 11 is a conductive thread, when inspecting the piezoelectricity of the piezoelectric thread 1, an electrode formed on a part of the outer periphery of the piezoelectric thread 1 and the electric charge generated in the piezoelectric thread 1 by using the core thread 11 are applied. Can be measured. This makes it possible to inspect the piezoelectric performance of the piezoelectric film 10 used for the piezoelectric thread 1. Further, by short-circuiting the conductive threads, a circuit is clearly formed between the threads, and the electric field generated between the surfaces of the threads is dramatically increased. Further, when a conductor is used for the core thread 11, if a current is passed through the core thread 11, even if an insulator other than the piezoelectric film 10 is wound around the core thread 11, the electric charge is generated by the energy from the outside. It is possible to realize a thread that generates an electric charge.

The core thread 11 is not an essential configuration. Even without the core thread 11, it is possible to spirally swirl the piezoelectric film 10 to form a piezoelectric thread (swivel thread). When there is no core thread 11, the swirl thread becomes a hollow fiber, and the heat retention capacity is improved. Further, the strength can be increased by impregnating the swivel thread itself with an adhesive.

The piezoelectric film 10 is made of, for example, a piezoelectric polymer. Piezoelectric films include those having pyroelectricity and those not having pyroelectricity. For example, PVDF (polyvinylidene fluoride) has pyroelectricity, and charges are generated even when the temperature changes. The surface of a pyroelectric piezoelectric material such as PVDF is also charged by the thermal energy of the human body.

In addition, polylactic acid (PLA) is a piezoelectric film that does not have pyroelectricity. Polylactic acid is uniaxially stretched to produce piezoelectricity. Polylactic acid includes PLLA in which an L-form monomer is polymerized and PDLA in which a D-form monomer is polymerized.

Chiral polymers such as polylactic acid have a spiral main chain. The chiral polymer has piezoelectricity when it is uniaxially stretched and the molecules are oriented. When the thickness direction of the uniaxially stretched piezoelectric film 10 made of polylactic acid is defined as the first axis, the stretching direction 900 is defined as the third axis, and the direction orthogonal to both the first axis and the third axis is defined as the second axis. It has tensor components of d14 and d25 as piezoelectric strain constants. Therefore, polylactic acid generates an electric charge when the strain is generated in the direction of 45 degrees with respect to the uniaxially stretched direction.

2 (A) and 2 (B) are views showing the relationship between the uniaxial stretching direction of polylactic acid, the electric field direction, and the deformation of the piezoelectric film 10. As shown in FIG. 2A, when the piezoelectric film 10 shrinks in the direction of the first diagonal line 910A and extends in the direction of the second diagonal line 910B orthogonal to the first diagonal line 910A, the piezoelectric film 10 faces from the back side to the front side of the paper surface. Generates an electric field. That is, the piezoelectric film 10 generates a negative charge on the front side of the paper surface. As shown in FIG. 2B, the piezoelectric film 10 also generates an electric charge when it extends in the direction of the first diagonal line 910A and contracts in the direction of the second diagonal line 910B, but the polarity is reversed and the surface of the paper surface. An electric field is generated in the direction from to the back side. That is, the piezoelectric film 10 generates a positive charge on the front side of the paper surface.

Since polylactic acid produces piezoelectricity by molecular orientation treatment by stretching, it is not necessary to perform polling treatment unlike other piezoelectric polymers such as PVDF or piezoelectric ceramics. The piezoelectric constant of uniaxially stretched polylactic acid is about 5 to 30 pC / N, and has a very high piezoelectric constant among polymers. Furthermore, the piezoelectric constant of polylactic acid does not fluctuate with time and is extremely stable.

The piezoelectric film 10 is produced by cutting a uniaxially stretched polylactic acid sheet as described above to, for example, a width of about 0.5 to 2 mm. As shown in FIG. 1B, the piezoelectric film 10 has the same major axis direction and the stretching direction 900. As shown in FIG. 1A, the piezoelectric film 10 is a piezoelectric yarn 1 of a left-handed swirl yarn (hereinafter, referred to as S yarn) twisted by turning left with respect to the core yarn 11. The stretching direction 900 is in a state of being tilted 45 degrees to the left with respect to the axial direction of the piezoelectric thread 1.

Therefore, as shown in FIG. 3, when an external force is applied to the piezoelectric thread 1, the piezoelectric film 10 becomes as shown in FIG. 2 (A) and generates a negative charge on the surface. Although not shown, in the case of the piezoelectric yarn 1 of the right-handed swivel yarn (hereinafter referred to as Z yarn) twisted by turning right with respect to the core yarn 11, when an external force is applied to the piezoelectric yarn 1, Generates a positive charge on the surface. Many fungi have a negative charge. Therefore, the cloth provided with the Z thread can adsorb many bacteria due to the generated positive charge. In addition, the cloth provided with the Z thread can also inactivate the bacteria having a negative charge by the generated positive charge. As described above, the cloth using the piezoelectric yarn that generates a positive charge on the surface has a high effect as the piezoelectric yarn for controlling bacteria.

The piezoelectric yarn is manufactured by any known method. Not only covering yarn using a slit film, but also as fibers, for example, a method of extruding a piezoelectric polymer into fibers and a method of melt-spinning a piezoelectric polymer into fibers (for example, a spinning process and drawing). Including the spinning / drawing method in which the processes are divided, the direct drawing method in which the spinning process and the drawing process are connected, the POY-DTY method in which the false twisting process can be performed at the same time, or the ultra-high speed prevention method for speeding up) , Dry or wet spinning of piezoelectric polymer (for example, phase separation method or dry / wet spinning method in which the polymer as a raw material is dissolved in a solvent and extruded from a nozzle to form fibers, and uniformly gelled with the solvent contained. A method of fiberizing by a liquid crystal spinning method such as fiberization, or a liquid crystal spinning method of fiberizing using a liquid crystal solution or a melt, etc.), or a method of fiberizing a piezoelectric polymer by electrostatic spinning, etc. Can be adopted. As the piezoelectric yarn 1, a twisted yarn obtained by twisting only a monofilament piezoelectric yarn without using the core yarn 11 may be used. Such plying can be made at low cost. Further, as the piezoelectric yarn 1, a twisted yarn obtained by twisting a monofilament piezoelectric yarn and a normal yarn (chemical fibers such as cotton, hemp, rayon, etc.) may be used. By including the ordinary yarn in the piezoelectric yarn 1, it is possible to improve the softness to the touch.

As a result, the piezoelectric thread 1 generates an electric charge on the surface when an external force is applied. By alternately weaving the piezoelectric threads 1 of the S thread and the Z thread as the charge generating portion, positive and negative charges are generated from the S thread and the Z thread. As a result, a large electric field is generated between the S thread and the Z thread. As a result, a current may flow through a current path formed by humidity or the like or a circuit formed by a local micro discharge phenomenon or the like. This current can give the user an electrical stimulus. Therefore, the wearable fiber product provided with such a charge generating portion can give an electrical stimulus to the user when an external force is applied. Hereinafter, footwear and the like provided with wearable textile products will be described.

FIG. 4A is a schematic plan view of the insole 100 for O-leg correction according to the first embodiment, and FIG. 4B is a schematic cross-sectional view of the sock 101 for O-leg correction according to the second embodiment. As shown in FIG. 4A, which is a diagram, the insole 100 according to the first embodiment is intended to be used integrally with the shoe by arranging it in a shoe (not shown). The insole 100 includes a charge generation unit 50 and a non-charge generation unit 51. The charge generating portion 50 is arranged at a portion corresponding to the outside of the heel of the foot. The non-charge generation unit 51 constitutes a portion of the insole 100 other than the charge generation unit 50.

In the present embodiment, the charge generation unit 50 is formed so as not to overlap the non-charge generation unit 51, but may be formed so as to overlap the non-charge generation unit 51. For example, the same effect can be obtained even if the non-charge generation unit 51 is placed on top of the insole 100 having only the non-charge generation unit 51. In this case, the charge generation unit 50 having a required size and shape is attached to the non-charge generation unit 51. A known method such as an adhesive or suture can be used for attaching the charge generation unit 50 and the non-charge generation unit 51.

Since the piezoelectric thread 1 is woven into the charge generation unit 50, when pressure is applied to the insole 100 arranged in the shoe, an electric charge is generated in the charge generation unit 50. Therefore, when the user wears shoes with the insole 100 and walks, an electric current flows from the charge generating unit 50 to the user's body through moisture such as sweat, and an electrical stimulus is given to the user. Further, since the magnitude of the generated charge depends to some extent on the expansion and contraction due to the pressure applied to the charge generation unit 50, the more the load by the user wearing the shoes with the insole 100 is applied to the charge generation unit 50, the more the charge is applied to the user. The electrical stimulation to be done becomes large. As a result, in order to avoid electrical stimulation, the user is naturally corrected to maintain a walking style and posture in which pressure is less likely to be applied to the charge generating portion 50. Further, since the insole 100 is simply inserted into the shoe or the like selected by the user, it can be applied to any shoe. The same effect can be obtained by attaching the charge generating portion 50 formed in the form of a sheet to the shoe itself selected by the user without using the insole 100. The piezoelectric yarn 1 preferably has a higher elongation rate than the non-charge generating yarn contained in the non-charge generating portion 51 that does not generate an electric charge. That is, it is preferable that the charge generation unit 50 has a higher elongation rate than the non-charge generation unit 51. As a result, when pressure is applied to the charge generating portion 50, the expansion and contraction of the piezoelectric thread 1 and the charge generating portion 50 becomes larger, so that the generated charge becomes larger. Therefore, a greater effect can be obtained. In the case of knitting, the elongation rates of the charge generating section 50 and the non-charge generating section 51 can be adjusted by the knitting method of the piezoelectric yarn 1 or the non-charge generating yarn.

As shown in FIG. 4B, the sock 101 according to the second embodiment includes a charge generation unit 52 and a non-charge generation unit 53. The charge generating portion 52 is arranged at a portion corresponding to the outside of the heel of the foot. The non-charge generation unit 53 constitutes a portion of the sock 101 other than the charge generation unit 52. The charge generation unit 52 is surrounded by the non-charge generation unit 53. Therefore, even if the charge generating portion 52 is made of a material having low elasticity, if the non-charge generating portion 53 is made of a material having high elasticity, the charge generating portion 52 expands and contracts the non-charge generating portion 53. It becomes more susceptible to the movement of. Further, for example, when the charge generating portion 52 has a tubular shape, one end or the other end of the cylinder may be connected to the non-charge generating portion 53. In this case as well, even if the charge generating portion 52 is made of a material having low elasticity, if the non-charge generating portion 53 is made of a material having high elasticity, the charge generating portion 52 is a non-charge generating portion. It becomes more susceptible to the expansion and contraction movement of 53.

Similar to shoes with an insole 100, when a user wears socks 101 and walks, electric charges are generated at the charge generating unit 52. As a result, in order to avoid electrical stimulation, the user is naturally corrected to maintain a walking style and posture in which pressure is less likely to be applied to the charge generating portion 52. By wearing the socks 101 and putting on the shoes, the same effect as when the insole 100 is used for the shoes can be obtained. The charge generating unit 52 may be formed in the form of a sheet to be attached to socks. Further, the charge generating unit 52 may be integrated in a form of being combined with the non-charge generating unit 53 to form a sock.

Further, the insole 100 according to the first embodiment and the sock 101 according to the second embodiment include corner portions (for example, a toe portion 61 and a heel portion 62). In the present embodiment, the corner portion means a corner or a corner. When the user uses the insole 100 or wears the sock 101, pressure is particularly likely to be applied to this corner portion. Therefore, by arranging the charge generating portions 50 and 52 at the corner portions, it is possible to generate charges more effectively.

In the first embodiment and the second embodiment, footwear for O-leg correction is given as an example, but it is not limited to O-leg correction. For example, by changing the arrangement of the charge generating portions 50 and 52, it can be used for prevention of hallux valgus, other posture correction, stimulation of the sole of the foot, and the like. Hereinafter, other embodiments will be described.

5 (A) is a schematic view of the sock 102 according to the third embodiment, FIG. 5 (B) is a schematic view of the supporter 103 according to the fourth embodiment, and FIG. 5 (C) is a schematic view of the supporter 103 according to the fourth embodiment. 5 is a schematic view of a moisturizing sanitary material 104 according to the fifth embodiment.

As shown in FIG. 5A, the sock 102 according to the third embodiment includes a charge generation unit 52 and a non-charge generation unit 53. The charge generating portion 52 is arranged in a portion 63 of the sock 102 other than the toes and heels. The non-charge generating portion 53 is arranged in the toe portion 61 and the heel portion 62. Normally, when a user wears socks, the toe portion 61 and the heel portion 62, which are pressured and tend to adhere to each other, tend to get stuffy, which causes the growth of odors and germs.

The electric charge generated in the electric charge generating unit 52 attracts water. That is, the water generated in the vicinity of the non-charge generation unit 53 is absorbed by the non-charge generation unit 53 and then attracted to the charge generation unit 52. Therefore, by arranging the charge generating portion 52 in the portion 63 other than the toe and the heel, the water generated in the toe portion 61 and the heel portion 62 is attracted to the portion 63 other than the toe and the heel. Therefore, the toe portion 61 and the heel portion 62 are less likely to get stuffy. Further, even when the user wears the shoe from above the sock 102, the charge generating portion 52 is provided on the side closer to the opening side of the shoe, so that the charge generating portion 52 comes into contact with the outside air and evaporates moisture. The stuffiness inside the shoe is reduced. As will be described in detail later, the charge generating unit 52 has an antibacterial effect or a bactericidal effect. Therefore, even if the water does not completely evaporate, the growth of odors and germs can be reduced by the antibacterial effect or the bactericidal effect of the charge generating portion 52.

As shown in FIG. 5B, the supporter 103 according to the fourth embodiment has a shape that covers the periphery of the user's heel. The supporter 103 includes a charge generation unit 54 and a non-charge generation unit 55. The charge generation unit 54 is arranged at the heel portion 64 of the supporter 103. The non-charge generating portion 55 is arranged other than the heel portion 64. Further, the supporter 103 preferably contains a stretchable material such as rubber. As a result, the supporter 103 comes into close contact with the user's skin, and at the same time, pressure is applied to the heel portion 64. When pressure is applied to the charge generating portion 54 arranged in the heel portion 64, water is attracted. This can bring a moisturizing effect to the heel portion 64. The supporter 103 may further have a waterproof sheet (not shown) that covers the charge generating portion 54. Since the waterproof sheet prevents the evaporation of water attracted to the charge generating portion 54, a higher moisturizing effect can be obtained. Further, when the supporter 103 is attached after applying the moisturizing cream or the like, not only the moisturizing effect is maintained but also the growth of bacteria in the moisturizing cream can be reduced, so that even if the supporter 103 is worn for a long time. The effect on the skin can be suppressed.

As shown in FIG. 5C, the moisturizing sanitary material 104 according to the fifth embodiment is intended to be applied to a wound of the skin 400 such as an adhesive plaster, for example. The sanitary material 104 includes a charge generation unit 56 and a non-charge generation unit 57. When pressure is applied to the charge generating portion 56 of the sanitary material 104, water (in this case, body fluid secreted from the wound) is attracted to the charge generating portion 56. As a result, so-called moist healing (wet treatment) can be applied to the wound, so that the healing of the wound can be accelerated. The sanitary material 104 may further have a waterproof sheet (not shown) that covers the charge generating portion 56. Since the waterproof sheet prevents the evaporation of water attracted to the charge generating portion 56, a higher moisturizing effect can be obtained.

In addition, it has been conventionally known that the growth of bacteria can be suppressed by an electric field (for example, Tetsuaki Doto, Hiroki Korai, Hideaki Matsuoka, Junichi Koizumi, Kodansha: Microbial Control-Science and Engineering. See also Koichi Takaki, Application of High Voltage / Plasma Technology to Agriculture / Food Fields, J.HTSJ, Vol.51, No.216). Further, depending on the potential that generates this electric field, a current may flow through a current path formed by humidity or the like or a circuit formed by a local micro discharge phenomenon or the like. It is considered that this electric current partially destroys the cell membrane of the bacterium and suppresses the growth of the bacterium. The bacteria referred to in the present embodiment include bacteria, fungi, and microorganisms such as mites and fleas.

Therefore, the piezoelectric thread 1 woven into the charge generating portion 56 directly exerts an antibacterial effect or a bactericidal effect by an electric field generated when it is close to an object having a predetermined potential such as a human body. Alternatively, the piezoelectric thread 1 passes an electric current through moisture such as sweat when it is close to an object having a predetermined potential such as a human body. This electric current may also directly exert an antibacterial effect or a bactericidal effect. Alternatively, radical species in which oxygen contained in water is changed by the action of current or voltage, radical species generated by interaction or catalytic action with additives contained in fibers, and other antibacterial chemical species (amine derivatives, etc.) ) May indirectly exert an antibacterial effect or a bactericidal effect. As radical species, generation of superoxide anion radical (active oxygen) and hydroxyl radical is considered. As a result, when the charge generating portion 56 of the sanitary material 104 exerts an antibacterial effect or a bactericidal effect, it is possible to suppress the growth of the wound and the bacteria around the wound and accelerate the healing of the wound.

As described above, the charge generating unit provided with the charge generating thread that generates charge by the energy from the outside can be applied to various products such as clothing and medical members. For example, charge generating threads include underwear (particularly socks), underwear such as towels, shoes and boots, sportswear in general, hats, bedding (including duvets, mattresses, sheets, pillows, pillowcases, etc.), toothbrushes, floss, etc. Various filters (water purifier, air conditioner or air purifier filter, etc.), stuffed animals, pet-related products (pet mats, pet clothes, inners for pet clothes), various mat products (feet, hands, toilet seats, etc.) , Curtains, kitchen utensils (sponge or cloth, etc.), seats (seats for cars, trains, planes, etc.), cushioning materials for motorcycle helmets and their exterior materials, sofas, bandages, gauze, masks, sutures, doctors and patients It can be applied to clothes, supporters, sanitary goods, sports goods (inners of clothing and gloves, baskets used in martial arts, etc.) or packaging materials. Further, it can be applied to a structure provided with a charge generating portion and an adhesive such as a cloth tape or a sticker sheet. In this case, the charge generating portion and the adhesive can be firmly connected by the anchor effect in which the pressure-sensitive adhesive penetrates into the charge generating portion provided with the charge generating thread.

Of the clothing, especially socks (or supporters), the piezoelectric thread 1 generates electric charges at a high frequency because the socks (or supporters) always expand and contract along the joints due to movements such as walking. In addition, socks absorb water such as sweat and serve as a hotbed for the growth of bacteria. However, since the piezoelectric thread 1 can suppress the growth of bacteria, it produces a remarkable effect as a measure against bacteria. Hereinafter, embodiments of socks for combating bacteria, which include a wearable fiber product according to the present invention, will be described.

FIG. 6A is a diagram for explaining the sock 105 according to the sixth embodiment. FIG. 6B is a diagram for explaining the sock 106 according to the seventh embodiment. 7 (A) to 7 (C) are views for explaining the structure of the charge generating portion 52 of the sock 105 according to the sixth embodiment, respectively, and FIG. 7 (B) is the opposite of FIG. 7 (A). It is a view seen from the side surface.

As shown in FIG. 6A, the sock 105 according to the sixth embodiment has a two-layer structure, and even if the sock 105 includes a layer composed of a charge generation unit 52 and a layer composed of a non-charge generation unit 53. Good. The inside of the sock 105 is a layer made of a charge generating part 52, and the outside is a layer made of a non-charge generating part 53. For example, the sock 105 is formed by attaching a cloth made of a charge generating portion 52 to the inside of a non-charge generating portion 53 formed in the shape of a sock. As a result, when the user wears the sock 105, the inner charge generating portion 52 can be brought close to the user's skin. The charge generating portion 52 does not have to be formed so as to cover the entire surface inside the non-charge generating portion 53, and is partially formed (for example, the toe portion 61 and / or the heel portion 62). You may.

The sock 105 according to the sixth embodiment has a single structure, and is a knitted yarn knitted with two knitting yarns, a yarn constituting the charge generating portion 52 and a yarn constituting the non-charge generating portion 53. You may. In the sock 105, the thread that comes out on the front side and the thread that comes out on the back side can be knitted into different types. In this case, as shown in FIG. 7A, the knitting yarn 71 forming the inner surface (front side of the paper surface) is the yarn forming the charge generating portion 52. Further, as shown in FIG. 7B, the knitting yarn 72 forming the outer surface (back side of the paper surface) is a yarn (cotton yarn or the like) forming the non-charge generating portion 53. As a result, when the user wears the sock 105, the inner charge generating portion 52 can be brought close to the user's skin.

The thread constituting the charge generating unit 52 may include two types of piezoelectric threads, an S thread that generates a negative charge and a Z thread that generates a positive charge. In this case, two types of electric charges, negative and positive, can be generated on the inner surface (front side of the paper). By adjusting the amount of Z thread and S thread used, the ratio of the polarity of the electric charge to be generated can be adjusted according to the application. Further, the yarn constituting the charge generating unit 52 may include a yarn (cotton yarn or the like) that does not generate an electric charge other than the Z yarn and the S yarn. Generally, the piezoelectric yarn is less soft to the touch than the cotton yarn and the like, so that the skin may be irritated when worn by the user. Therefore, by partially using a thread (cotton thread or the like) that does not generate an electric charge in the electric charge generating portion 52, the electric charge generating portion 52 feels better and the irritation to the skin is alleviated.

Conventionally, antibacterial socks made of an antibacterial material have been used with threads containing an antibacterial agent, a metal, or the like. Since the components of such existing antibacterial socks are released, the effect does not last for a long time, and an allergic reaction due to a drug or the like may occur. On the other hand, since the sock 105 according to the sixth embodiment includes the charge generating unit 52, it is applied to an object (clothing, a medical product such as a mask) used in the vicinity of an object having a predetermined potential such as a human body. The electric field or electric current generated when the electric field or electric current is generated, or the oxygen contained in the water is changed to a radical species by them, thereby exerting an antibacterial effect (effect of suppressing the growth of bacteria) or a bactericidal effect (effect of killing bacteria). It is a thing. Therefore, the effect lasts for a long time, and an allergic reaction due to a drug or the like does not occur.

Since the charge generation unit 52 is formed inside the non-charge generation unit 53, the charge generation unit 52 is close to the user's skin. Since the distance between the charge generating unit 52 and the user's skin is short, the charge is generated near the user's skin. This makes it possible to more efficiently reduce the growth of mold and fungi on the user's skin. Further, in the sock 105, since the non-charge generating portion 53 is provided on the surface opposite to the user's skin, the charge generating portion 52 can be protected from the external environment.

In addition, when the user wears socks, the outer portion of the socks is likely to be worn. In the sock 105, since the non-charge generation unit 53 is formed on the outside of the charge generation unit 52, the portion that is easily worn is the non-charge generation unit 53. Therefore, the wear of the charge generating portion 52 is suppressed, and the antibacterial property of the sock 105 is maintained. A thread containing an antibacterial agent, a metal, or the like may be used in combination. Thereby, the antibacterial property can be further improved.

In the sixth embodiment, the sock 105 in which the charge generating portion 52 is arranged inside and the non-charge generating portion 53 is arranged on the outside has been described, but the non-charge generating portion 53 is arranged on the inside and the electric charge is arranged on the outside. It can also be applied to the one in which the generation unit 52 is arranged. For example, a protective material for a tennis grip can be mentioned. In a tennis grip, the side on which the user grips the grip is on the outside. When the charge generating portion 52 is arranged on the outer surface of the protective material for the tennis grip, the user grips the grip to generate an electric charge on the outer side where the user's skin comes into contact. This makes it possible to more efficiently reduce the growth of mold and fungi on the user's skin and the protective material of the tennis grip.

As shown in FIG. 6B, the sock 106 according to the seventh embodiment has a two-layer structure, and even if the sock 106 includes a layer composed of a charge generation unit 52 and a layer composed of a non-charge generation unit 53. Good. The outer side of the sock 106 is a layer made of a charge generating part 52, and the inner side is a layer made of a non-charge generating part 53. That is, the sock 106 according to the seventh embodiment has a structure in which the inside and the outside are arranged in reverse as compared with the sock 105 according to the sixth embodiment. For example, the sock 106 is formed by attaching a cloth made of the charge generating portion 52 to the outside of the non-charge generating portion 53 formed in the shape of the sock. As a result, when the user wears the socks 106, the outer charge generating portion 52 can be arranged at a position far from the user's skin and not in direct contact with the user's skin. The charge generating portion 52 does not have to be formed so as to cover the entire surface inside the non-charge generating portion 53, and is partially formed (for example, the toe portion 61 and / or the heel portion 62). You may.

The sock 106 according to the seventh embodiment has a single structure like the sock 105, and is a splicing yarn using two knitting yarns, a yarn constituting the charge generating portion 52 and a yarn constituting the non-charge generating portion 53. It may be a knitted knitted fabric. In this case, as shown in FIG. 7B, the knitting yarn 71 forming the outer surface (back side of the paper surface) is the yarn forming the charge generating portion 52. Further, as shown in FIG. 7A, the knitting yarn 72 forming the inner surface (front side of the paper surface) is a yarn (cotton yarn or the like) forming the non-charge generating portion 53. As a result, when the user wears the socks 106, the outer charge generating portion 52 can be kept away from the user's skin.

Similar to the sock 105, the thread constituting the charge generating portion 52 may include an S thread that generates a negative charge and a Z thread that generates a positive charge. In this case, since two types of electric charges, negative and positive, can be generated on the outer surface of the sock 106, the ratio of the polarities of the electric charges to be generated can be adjusted according to the application.

The yarn constituting the charge generating unit 52 may include a yarn (cotton yarn or the like) that does not generate an electric charge other than the Z yarn and the S yarn. By weaving a cotton thread or the like thicker than the Z thread and the S thread, the area where the Z thread and the S thread come into direct contact with the outside becomes smaller, so that the durability of the Z thread and the S thread can be maintained.

Since the charge generation unit 52 is formed on the outside of the non-charge generation unit 53, the charge generation unit 52 is located on the outside of the sock 106. As a result, the growth of mold and fungi on the outside of the sock 106 can be reduced, so that the mold and fungi can be suppressed from entering the inside of the sock 106. For example, even if shoes wet with rain are worn, the bacteria generated on the shoe side are sterilized by the charge generating portion 52 provided on the surface of the sock 106, so that the invasion of the sock 106 into the inside can be suppressed. it can.

Further, since the charge generating portion 52 is arranged at a position where it does not directly touch the user's skin and the non-charge generating portion 53 made of cotton thread or the like touches the user's skin, the touch of the sock 106 can be improved. Further, since the charge generation unit 52 is formed on the outer side of the non-charge generation unit 53, the distortion when the user moves is larger than the inner non-charge generation unit 53. For example, even if the movements are the same, the expansion and contraction of the charge generation unit 52 is larger than the expansion and contraction of the non-charge generation unit 53. Therefore, the electric charge can be efficiently generated from the electric charge generating unit 52 with a small movement, so that the antibacterial action and the like can be exhibited more efficiently.

The piezoelectric thread 1 constituting the charge generating section 52 has lower hygroscopicity than the ordinary thread forming the non-charge generating section 53. Since the charge generation unit 52 is formed on the outside of the non-charge generation unit 53, the non-charge generation unit 53 having excellent hygroscopicity comes into contact with the user's body side. Therefore, the sweat is absorbed by the non-charge generating portion 53, and the discomfort of the user is reduced. Further, the water absorbed by the non-charge generation unit 53 can be sterilized by the charge generated on the charge generation unit 52 side.

The charge generating unit 52 may be made of a transparent material. Since the charge generation unit 52 is formed outside the non-charge generation unit 53, if the charge generation unit 52 is transparent, the non-charge generation unit 53 can be irradiated with light through the charge generation unit 52. When the non-charge generation unit 53 is made of a material capable of absorbing light and generating heat, the non-charge generation unit 53 absorbs light from the outside and generates heat because the charge generation unit 52 is transparent. Further, since the non-charge generation unit 53 is arranged inside the charge generation unit 52, the heat generated by the non-charge generation unit 53 is difficult to be released to the outside, and the heat retention property is improved. The non-charge generating portion 53 may be made of a material that generates heat when expanded and contracted. In this case, the charge generating unit 52 does not necessarily have to be a transparent material.

FIG. 8A is a diagram for explaining the shoe 107 according to the eighth embodiment. FIG. 8B is a diagram for explaining the capacitance generated in the shoe 107. FIG. 9A is a diagram for explaining the shoe 108 according to the modified example of the eighth embodiment. FIG. 9B is a diagram for explaining the capacitance generated in the shoe 108. In FIG. 9A, for convenience of explanation, a part of the main body 80 of the shoe 107 is shown in a transparent state.

As shown in FIG. 8A, the shoe 107 according to the eighth embodiment includes a main body 80, a shoelace 81, and a metal wire 82. The shoelace 81 is a charge generation unit 83, and is a string in which a charge generation thread that generates an electric charge by energy from the outside is woven. Further, any one of the threads woven into the shoelace 81 may be a charge generating thread. For example, the shoelace 81 has either one of the S thread and the Z thread. Further, the cross-sectional shape of the shoelace 81 is not particularly limited. For example, the cross-sectional shape of the shoelace 81 may be a round shape, a square shape, or the like.

A metal wire 82 is arranged on the main body 80. The metal wire 82 may be provided at predetermined intervals from the shoelace 81 to the sole of the main body 80 in contact with the ground.

Further, the metal wire 82 may be arranged on the surface of the main body 80 or inside the sole, but may be arranged in a state of being embedded inside the main body 80. When the metal wire 82 is arranged in a state of being embedded inside the main body 80, the metal wire 82 does not come into direct contact with the outside air, so that damage and corrosion are prevented and durability is improved.

When the user puts on the shoe 107 and tightens the shoelace 81, a force is applied to the shoelace 81 to generate an electric charge. Further, when the user walks while wearing the shoes 107, an electric charge is generated by applying a force to the shoelaces 81. As shown in FIG. 8B, the electric charge generated in the shoelace 81 forms a capacitance between the ground G in contact with the sole of the shoe 107 and the metal wire 82 via the metal wire 82. .. As a result, the growth of mold and fungi on the main body 80 of the shoe 107 can be reduced. Further, since the electric charge generated by using the shoes 107 is used without using chemicals or the like, the antibacterial effect can be maintained. Instead of the metal wire 82, a non-woven fabric containing a metal fiber may be arranged in the main body 80. This also has the same effect, and since the metal can be arranged in a wider range than the metal wire 82, a larger capacitance is formed.

As shown in FIG. 9A, the shoe 108 includes a metal wire 84, a metal wire 85, a metal wire 86, and a metal thin layer 87 instead of the metal wire 82 as compared with the shoe 107. The metal wire 84 is formed up to a predetermined position from the shoelace 81 to the upper part of the sole of the main body 80. The number of metal wires 84 may be one, or a plurality of metal wires 84 may be provided. The metal wire 84 connects the shoelace 81 and the metal wire 86. The metal thin layer 87 is provided on the insole portion of the shoe 108. The shape of the metal thin layer 87 may be the shape of the insole as in the first embodiment of the shoe, or is not particularly limited as long as it is provided in the insole portion of the shoe. The metal wire 85 is provided so as to connect the lower portion of the sole of the main body 80 in contact with the ground from the thin metal layer 87. The number of metal wires 85 may be one, or a plurality of metal wires 85 may be provided.

When the user uses the shoe 108, a force is applied to the shoelace 81 to generate an electric charge. As shown in FIG. 9B, the electric charge generated in the shoelace 81 forms a capacitance between the lower part of the sole of the shoe 107 and the shoelace 81. At this time, since the metal wire 84, the metal wire 85, the metal wire 86, and the metal thin layer 87 exist between the lower part of the sole of the shoe 107 and the shoe cord 81, the place where the electrostatic capacity is formed is a metal. It can be selected at the place where the wire 86 and the thin metal layer 87 are arranged. Thereby, the place where the capacitance is formed can be expanded.

Further, the place where the electrostatic capacity is formed is set a distance from the distance between the lower part of the sole and the shoelace 81 by the presence of the metal wire 84, the metal wire 85, the metal wire 86 and the metal thin layer 87. Can be shortened. That is, the portion where the capacitance is formed is a section from the metal wire 86 to the metal thin layer 87. Therefore, the generated capacitance can be increased, and the effectiveness such as antibacterial property can be enhanced. Only one of the metal wire 84 and the metal wire 85 may be provided.

As another modification of the shoe 107, a metal fiber may be woven into the main body 80 at a position where the shoelace 81 is in contact with the shoelace 81. As a result, similarly to the shoe 108, the portion where the capacitance is formed can be expanded in the horizontal direction, or the distance can be shortened by the presence of the metal fiber from the distance between the sole and the metal wire 82. can do.

FIG. 10 is a diagram for explaining the shoe 109 according to the ninth embodiment. 11 (A) to 11 (C) are views for explaining the tightening operation of the shoe 109. FIG. 12 is a block diagram of the control circuit in the shoe 109.

As shown in FIG. 10, the shoe 109 according to the ninth embodiment includes a main body 90, a piezoelectric fabric 91, a wire 92, a circuit board 93, a pin 94, a tow string 95, and a motor 96.

The shoe 109 includes a piezoelectric fabric 91 as a part of the main body 90. The piezoelectric fabric 91 corresponds to the above-mentioned charge generating portion. The main body 90 other than the piezoelectric fabric 91 corresponds to the above-mentioned non-charge generating portion. The piezoelectric fabric 91 is arranged so as to wrap the instep from the back surface of the user's foot. Although FIG. 10 shows an example in which the piezoelectric fabric 91 is arranged near the base of the toes, it may be arranged near the arch, near the heel, or the like. The piezoelectric fabric 91 may be arranged at these a plurality of locations. By arranging the piezoelectric fabric 91 in a place where the influence of the movement of the foot is large, the electric charge can be efficiently generated from the piezoelectric fabric 91.

The wire 92 is arranged so as to wind the instep from the back surface of the user's foot. Although the wires 92 are arranged at one place in FIG. 10, they may be arranged at a plurality of places. The location where the wire 92 is placed may be near the user's ankle. By arranging the wires 92 at a plurality of locations, a higher fit can be obtained. When the wires 92 are arranged at a plurality of locations, the length, width, and the like of each wire 92 can be appropriately changed depending on the locations where the wires 92 are arranged. The wire 92 may be arranged in a location that does not interfere with the piezoelectric fabric 91. As a result, the influence of the tightening of the wire 92 on the piezoelectric fabric 91 can be suppressed.

The circuit board 93 is arranged near the upper part of the toe of the user's foot. Although FIG. 10 shows an example in which the circuit board 93 is arranged near the upper part of the toes of the toes, it may be arranged near the ankles, the heels, and the like. By arranging the circuit board 93 in a place where the influence of the movement of the foot is small, the durability of the circuit board 93 is enhanced.

The pin 94 is arranged near the instep of the user so as to be in contact with the wire 92. The pin 94 is for maintaining the position of the wire 92. As shown in FIG. 11 (A), the wire 92 is hung by two pins 94 and a tow cord 95. The state shown in FIG. 11A is a state in which the user is stopped, and the wire 92 is hardly subjected to the tensile force from the tow string 95.

As shown in FIG. 12, the circuit board 93 includes a motor 96, a control unit 97, and a drive unit 98. The piezoelectric fabric 91 is connected to the control unit 97. The control unit 97 is connected to the motor 96 via the drive unit 98. The control unit 97 detects the voltage generated by the piezoelectric fabric 91. The piezoelectric fabric 91 is connected to the control unit 97 via a wiring line arranged in the main body 90. The control unit 97 includes, for example, a microcomputer composed of a microprocessor, and power is supplied from a power source such as a battery (not shown) via a power supply line. The control unit 97 detects a voltage based on bending or twisting of the piezoelectric fabric 91.

The control unit 97 instructs the drive unit 98 of the rotation speed of the motor 96 according to the detected voltage. Examples of the motor 96 include a stepping motor. Here, the rotation speed of the motor 96 indicates the total number of rotations of the motor 96. The tow string 95 is connected to the motor 96, and the tow string 95 is operated by the motor 96. The tension of the wire 92 is adjusted by the movement of the tow cord 95. For example, when the rotation speed according to the detected voltage is proportional to the magnitude of the voltage, when a range is provided for the magnitude of the voltage and the rotation speed is changed stepwise in that range, or when a predetermined value is provided. For example, the rotation speed is changed when the voltage continues to be detected for a predetermined time. If the number of revolutions is changed when a predetermined voltage continues to be detected for a predetermined time, when the user suddenly stops jogging or the like and starts again, the shoe 109 may suddenly loosen and fall. You can prevent discomfort.

In such a configuration, when the user walks, jogging, or the like, the tension of the wire 92 is adjusted according to the voltage generated in the piezoelectric fabric 91. As a result, the tightening condition of the shoe 109 is adjusted according to the walking condition and the running condition of the user, and is integrated with the user's foot, so that the shoe 109 can be easily fitted to the user's foot. For example, when the user walks slowly, a relatively small pressure is applied to the piezoelectric fabric 91. At this time, as shown in FIG. 11B, the motor 96 rotates according to the detected pressure, and the wire 92 is slightly pulled by the tow string 95.

On the other hand, when the user runs, a relatively large pressure is applied to the piezoelectric fabric 91. At this time, as shown in FIG. 11C, the motor 96 rotates according to the detected pressure, and the wire 92 is largely pulled by the tow string 95. In this way, the tightening condition of the shoe 109 by the wire 92 is adjusted according to the movement of the user, so that the user can obtain a comfortable fit. On the contrary, when the user does not move much, the foot is not tightened, so that an unnecessary burden on the user's foot is prevented and the air permeability is maintained.

Further, by adopting the piezoelectric fabric 91 using the above-mentioned PLLA, the weight can be reduced as compared with the case of using the conventional ceramic piezoelectric body (PZT) without increasing the thickness of the sole. Further, since PLLA has flexibility, if the electrode formed on the surface is made of an organic material having the same flexibility as PLLA, it is prevented from being cracked by a load or impact from the foot due to jogging or walking. .. In addition, the PLLA can reduce the environmental load.

FIG. 13 is a diagram for explaining the clothing 120 according to the tenth embodiment. As shown in FIG. 13, the garment 120 includes a main body 121, a piezoelectric fabric 91, a wire 92, a circuit board 93, and a pin 94, similarly to the shoe 109 according to the ninth embodiment. Although the piezoelectric fabric 91 can be arranged at any position of the clothing 120, it is preferable that the piezoelectric fabric 91 is arranged at a position where the movement of the user's body can be easily detected. In the garment 120, the wire 92 is provided in the sleeve portion of the garment 120 substantially parallel to the opening of the sleeve. The wire 92 is not limited to the sleeve, and can be provided at a place where the user's body is desired to be fitted when the clothing 120 is worn. Further, a plurality of wires 92 may be provided, or may be provided on a net. As a result, it is possible to give variation to the expansion and contraction movement of the wire 92.

The circuit board 93 is preferably arranged on the upper part of the shoulder or the like, which does not hinder the user's operation. Further, the pin 94 is provided along the wire 92. Although not shown, the main body 121 of the garment 120 may further include a shape memory wire substantially perpendicular to the wire 92. As a result, it is possible to prevent the main body 121 from being turned up by tightening the wire 92. The description of other configurations will be omitted because the configurations are the same as those of the ninth embodiment.

When the user wears the garment 120 and operates, the tension of the wire 92 is adjusted according to the voltage generated in the piezoelectric fabric 91. As a result, the tightness of the garment 120 is adjusted according to the movement of the user, the garment 120 is integrated with the user's body, and it becomes easy to fit the user's body. In this way, the tightening condition of the garment 120 by the wire 92 is adjusted according to the movement of the user, so that the user can obtain a comfortable fit. Therefore, even when the user performs a vigorous operation, the hem of the clothing 120 or the like does not get in the way, and the user can operate smoothly. On the contrary, when the movement of the user is small, the tightening is not performed, so that an unnecessary burden on the user's body is prevented and the air permeability is maintained. Although clothing 120 has been illustrated as the tenth embodiment, clothing 120 is an example and can be applied to other clothing such as trousers and outerwear.

Finally, the description of this embodiment should be considered to be exemplary in all respects and not restrictive. The scope of the present invention is shown not by the above-described embodiment but by the scope of claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the claims.

1, ... Piezoelectric yarn (charge generating yarn)
50, 52, 54, 56 ... Charge generating part 51, 53, 55, 57 ... Non-charge generating part 101-109, 120 ... Socks, shoes, supporters, sanitary materials, clothing (wearable textile products)
61, 62 ... Toe part, heel part (corner part)
101 ... Socks, shoes (footwear)

Claims (6)

A cloth-like charge generating portion containing at least a charge generating yarn, which is a piezoelectric yarn that generates an electric charge when an external force or heat is applied, and a cloth-shaped charge generating portion.
Look containing uncharged generation yarn that does not generate charges by an external force or heat is applied, and a cloth-like non-charge-generating unit that does not include the charge generating yarn,
With
The charge generation unit is connected to the non-charge generation unit so that the periphery of the charge generation unit is surrounded by the non-charge generation unit.
The charge generating portion is deformed as the non-charge generating portion is deformed.
The stretch of uncharged generating unit, rather higher than the charge generating section,
The charge generating portion and the non-charge generating portion are sewn together.
The charge generating portion and the non-charging generating portion are knitted.
The uncharged generating unit, elasticity is not higher than that of the charge generating section,
Wearable textile products. With corners or corners that are corners,
The wearable fiber product according to claim 1, wherein the charge generating portion is arranged at the corner portion. Footwear comprising the wearable textile product according to claim 1 or 2.
The charge generating portion is a footwear arranged on the toe and / or heel portion of the footwear. A footwear comprising the wearable textile product according to claim 1.
The charge generating portion is a footwear arranged on a portion other than the toes and heels of the footwear. The charge generating yarn contains a piezoelectric material .
The wearable textile product according to claim 1 or 2. The charge generating section has a lower elongation rate than the non-charge generating section .
The wearable textile product according to claim 1, 2 or 5.

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