WO2018117004A1

WO2018117004A1 - Wearable textile product, and footwear

Info

Publication number: WO2018117004A1
Application number: PCT/JP2017/045251
Authority: WO
Inventors: 尚志木原; 山口　喜弘; 大寺　昭三; 文哉礒野; 森　健一; 健太朗臼井; 豊石浦; 遠藤　潤; 信人椿; 正道安藤
Original assignee: 株式会社村田製作所
Priority date: 2016-12-22
Filing date: 2017-12-18
Publication date: 2018-06-28
Also published as: JPWO2018117004A1; JP6867408B2

Abstract

Provided is a wearable textile product which can be adapted to a product (such as a shoe) selected by a user, and which corrects the gait when worn. This wearable textile product is provided with: a cloth-like electric charge generating portion (50, 52, 54, 56) including an electric charge generating thread (1) which generates an electric charge by means of energy from the outside; and a cloth-like non-electric charge generating portion (51, 53, 55, 57) including a non-electric charge generating thread which does not generate an electric charge by means of energy from the outside.

Description

Wearable textile products and footwear

One embodiment according to the present invention relates to a wearable fiber product and footwear comprising the wearable fiber product.

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

JP 2005-224335 A JP 2007-130369 A

However, all of these footwear has a complicated structure, and there are few designs and types, and the selection range of the user is considerably limited. In addition, it is difficult to give normal footwear the function of correcting walking later.

Therefore, an embodiment of the present invention aims to provide a wearable fiber product that can be applied to a product (such as shoes) selected by the user and corrects walking when worn.

A wearable fiber product according to an embodiment of the present invention includes a cloth-like charge generation unit including a charge generation yarn that generates a charge by external energy and a non-charge generation yarn that does not generate a charge by external energy. 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, only the charge generation unit can generate a charge. For this reason, charges can be partially generated with a simple structure in which a charge generation portion in which charge generation yarns are woven into only a necessary place is arranged. Thereby, the wearable fiber product of this invention can generate | occur | produce the electric charge as needed at the time of mounting | wearing. For example, an electrical stimulus can be given to a user's body by the generated electric charge to correct walking.

According to an embodiment of the present invention, it is possible to realize a wearable fiber product that can be applied to a product (such as shoes) selected by the user and that corrects walking when worn.

FIG. 1A is a diagram showing the configuration of the piezoelectric yarn 1, and FIG. 1B is a plan view of the piezoelectric film 10. FIGS. 2A and 2B are diagrams 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 yarn 1 when external force is engaged. 4A is a schematic plan view of the insole 100, and FIG. 4B is a schematic cross-sectional view of the sock 101. FIG. 5 (A) is a schematic view of a sock 102 according to the third embodiment, FIG. 5 (B) is a schematic view of a supporter 103 according to the fourth embodiment, and FIG. It is the schematic of the sanitary material 104 for moisture retention which concerns on 5 embodiment. FIG. 6A is a view for explaining a sock 105 according to the sixth embodiment. FIG. 6B is a view for explaining a sock 106 according to the seventh embodiment. FIGS. 7A and 7B are views for explaining the structure of the charge generation unit 52 of the sock 105 according to the sixth embodiment. FIG. 8A is a view for explaining a 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 view for explaining a shoe 108 according to a modification of the eighth embodiment. FIG. 9B is a diagram for explaining the capacitance generated in the shoe 108. FIG. 10 is a view for explaining a shoe 109 according to the ninth embodiment. FIGS. 11A to 11C are diagrams for explaining a tightening operation in the shoe 109. FIG. FIG. 12 is a block diagram of a control circuit in the shoe 109. FIG. 13 is a view for explaining a garment 120 according to the tenth embodiment.

The wearable fiber product according to the present embodiment includes a cloth-like charge generation unit including a charge generation yarn that generates a charge by external energy and a non-charge generation yarn that does not generate a charge by external energy. A non-charge generating unit. For convenience of explanation, after describing the charge generating yarn, footwear or the like including the wearable fiber product will be described.

FIG. 1 (A) is a partially exploded view showing the configuration of the piezoelectric yarn 1, and FIG. 1 (B) is a plan view of the piezoelectric film 10. The piezoelectric yarn 1 is an example of a charge generating yarn that generates charges by external energy.

The piezoelectric yarn 1 is obtained by winding a piezoelectric film 10 around a core yarn 11. The piezoelectric film 10 is an example of a piezoelectric body. The core yarn 11 is appropriately selected from natural fibers or chemical fibers. Natural fibers or chemical fibers include plant fibers, animal fibers, or polylactic acid. 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 have to be piezoelectric polylactic acid. As will be described later, when polylactic acid is used for the piezoelectric film 10, it becomes the same material as the core yarn 11, so that the affinity is increased. Examples of the chemical fiber include synthetic fiber, glass fiber, and carbon fiber. Chemical fibers are more robust than natural fibers.

Further, the core yarn 11 may be a conductive yarn having conductivity. When the core yarn 11 is a conductive yarn, when the piezoelectricity of the piezoelectric yarn 1 is inspected, the charge formed in the piezoelectric yarn 1 using the electrode formed on a part of the outer periphery of the piezoelectric yarn 1 and the core yarn 11 is generated. It can be measured. Thereby, the piezoelectric performance of the piezoelectric film 10 used for the piezoelectric yarn 1 can be inspected. In addition, by short-circuiting the conductive yarns, a clear circuit is formed between the yarns, and the electric field generated between the surfaces of the yarns increases dramatically. Further, when a conductor is used for the core yarn 11, if an electric current is passed through the core yarn 11, even if the insulator other than the piezoelectric film 10 is wound around the core yarn 11, it is charged by the energy from the outside. Can be realized.

Note that the core yarn 11 is not an essential component. Even without the core yarn 11, it is possible to turn the piezoelectric film 10 in a spiral shape to obtain a piezoelectric yarn (swivel yarn). When the core yarn 11 is not present, the swirl yarn becomes a hollow fiber, and the heat retaining ability is improved. Further, when the swirl yarn itself is impregnated with an adhesive, the strength can be increased.

The piezoelectric film 10 is made of, for example, a piezoelectric polymer. Some piezoelectric films have pyroelectric properties and others do not have pyroelectric properties. For example, PVDF (polyvinylidene fluoride) has pyroelectricity, and charges are generated even when the temperature changes. A piezoelectric material having pyroelectric properties such as PVDF generates charges on the surface also by the thermal energy of the human body.

Polylactic acid (PLA) is a piezoelectric film that does not have pyroelectricity. Polylactic acid produces piezoelectricity by being uniaxially stretched. Polylactic acid includes PLLA in which an L monomer is polymerized and PDLA in which a D monomer is polymerized.

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

2 (A) and 2 (B) are diagrams 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 contracts 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 extends in the direction from the back side to the front side. Generates an electric field. That is, the piezoelectric film 10 generates a negative charge on the front side of the sheet. As shown in FIG. 2B, the piezoelectric film 10 generates 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 the back to the back. That is, the piezoelectric film 10 generates a positive charge on the front side of the sheet.

Since polylactic acid generates piezoelectricity by molecular orientation treatment by stretching, it is not necessary to perform poling treatment like 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 vary with time and is extremely stable.

The piezoelectric film 10 is produced by cutting a uniaxially stretched polylactic acid sheet as described above, for example, to a width of about 0.5 to 2 mm. As shown in FIG. 1B, the major axis direction and the stretching direction 900 of the piezoelectric film 10 coincide with each other. As shown in FIG. 1A, the piezoelectric film 10 becomes a piezoelectric yarn 1 of a left turning yarn (hereinafter referred to as S yarn) twisted by turning left with respect to the core yarn 11. The drawing direction 900 is inclined 45 degrees to the left with respect to the axial direction of the piezoelectric yarn 1.

Therefore, as shown in FIG. 3, when an external force is applied to the piezoelectric yarn 1, the piezoelectric film 10 is in the state shown in FIG. 2A, and a negative charge is generated on the surface. Although not shown, in the case of the piezoelectric yarn 1 of a right turning 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, A positive charge is generated on the surface. Many bacteria have a negative charge. Therefore, the cloth provided with the Z yarn can adsorb many bacteria due to the generated positive charges. Moreover, the cloth provided with the Z yarn can inactivate 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 a microbe-controlling piezoelectric yarn.

Incidentally, the piezoelectric yarn is manufactured by any known method. Not only covering yarn using slit film, but also fiber, for example, a method of extruding and polymerizing a piezoelectric polymer, a method of melt-spinning a piezoelectric polymer into a fiber (for example, spinning process and drawing) (Including spinning / stretching method that divides the process, direct stretching method that connects spinning process and stretching process, POY-DTY method that can perform false twisting process at the same time, or ultra-high speed prevention method that speeds up) Piezoelectric polymers are dry-type or wet-spun (for example, a phase separation method in which a polymer as a raw material is dissolved and extruded from a nozzle to be fiberized, or a wet and wet spinning method, uniformly in a gel form while containing the solvent. (Including liquid crystal spinning method for fiberizing, liquid crystal spinning method for fiberizing using liquid crystal solution or melt, etc.) or fiberizing piezoelectric polymer by electrostatic spinning It is possible to adopt a technique or the like. The piezoelectric yarn 1 may be a twisted yarn obtained by twisting only a monofilament piezoelectric yarn without using the core yarn 11. Such a twisted yarn can be made at low cost. The piezoelectric yarn 1 may be a twisted yarn obtained by twisting a monofilament piezoelectric yarn and a normal yarn (chemical fiber such as cotton, hemp, rayon, etc.). By including the ordinary yarn in the piezoelectric yarn 1, the touch can be improved.

Thus, the piezoelectric yarn 1 generates a charge on the surface when an external force is applied. By alternately weaving the S yarn and Z yarn piezoelectric yarns 1 as the charge generation portion, positive and negative charges are generated from the S yarn and Z yarn. As a result, a large electric field is generated between the S yarn and the Z yarn. As a result, current may flow through a circuit formed by a current path formed by moisture or the like, or a local micro discharge phenomenon. This current can provide an electrical stimulus to the user. Therefore, the wearable fiber product including such a charge generation unit can give an electrical stimulus to the user when an external force is involved. Hereinafter, footwear or the like including a wearable fiber product will be described.

FIG. 4A is a schematic plan view of an insole 100 for O-leg correction according to the first embodiment, and FIG. 4B is a schematic cross section of an O-leg correction sock 101 according to the second embodiment. As shown in FIG. 4A, the insole 100 according to the first embodiment is used as an integral part of a shoe by being placed in a shoe (not shown). The insole 100 includes a charge generation unit 50 and a non-charge generation unit 51. The charge generation unit 50 is disposed in a portion corresponding to the outside of the foot heel. The non-charge generation unit 51 constitutes a part other than the charge generation unit 50 in the insole 100.

In this 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 when the non-charge generating portion 51 is arranged in a layered manner with the non-charge generating portion 51 alone in the shape of the insole 100. 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 stitching can be used to attach the charge generation unit 50 and the non-charge generation unit 51.

Since the piezoelectric yarn 1 is woven in the charge generation unit 50, a charge is generated in the charge generation unit 50 when pressure is applied to the insole 100 disposed in the shoe. For this reason, when the user wears a shoe with an insole 100 and walks, a current flows from the charge generation unit 50 to the user's body through moisture such as sweat, and an electrical stimulus is given to the user. In addition, 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 load applied to the charge generation unit 50 by the user wearing the shoes with the insole 100 is applied to the user. The electrical stimulation that will be increased. Thereby, in order to avoid electrical stimulation, the user is corrected so as to maintain a walking method and posture in which the pressure is not easily applied to the charge generation unit 50. Moreover, since the insole 100 is only inserted into the shoes selected by the user, the present invention can be applied to any shoes. The same effect can be obtained by attaching the charge generation unit 50 formed in a sheet shape 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 that does not generate charges contained in the non-charge generating portion 51. That is, it is preferable that the charge generation unit 50 has a higher elongation rate than the non-charge generation unit 51. Accordingly, when pressure is applied to the charge generation unit 50, the expansion and contraction of the piezoelectric yarn 1 and the charge generation unit 50 become larger, and thus the generated charge increases. Therefore, a greater effect can be obtained. In addition, about the elongation rate of the electric charge generation | occurrence | production part 50 and the non-charge generation part 51, when it is a knitted fabric, it can adjust with the knitting method of the piezoelectric yarn 1 or a non-charge generation 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 generation unit 52 is disposed at a portion corresponding to the outside of the foot heel. The non-charge generation unit 53 constitutes a part other than the charge generation unit 52 in the sock 101. The charge generation unit 52 is surrounded by the non-charge generation unit 53. For this reason, even if the charge generation part 52 is formed of a material having low stretchability, if the non-charge generation part 53 is formed of a material having high stretchability, the charge generation part 52 is expanded or contracted by the non-charge generation part 53. It becomes easy to be influenced by the movement of. Further, for example, when the charge generation unit 52 has a cylindrical shape, one end or the other end of the tube may be connected to the non-charge generation unit 53. In this case as well, even if the charge generation unit 52 is formed of a material with low stretchability, the charge generation unit 52 is not formed with a non-charge generation unit if the noncharge generation unit 53 is formed of a material with high stretchability. It becomes easy to be influenced by the movement of the expansion / contraction of 53.

Similarly to the shoe with the insole 100, when the user walks with the sock 101, the charge generator 52 generates a charge. Thereby, in order to avoid electrical stimulation, the user is corrected so as to maintain a walking style and posture in which pressure is not easily applied to the charge generator 52. By wearing the socks 101 and wearing the shoes, the same effect as when the insole 100 is used for the shoes can be obtained. In addition, the electric charge generation | occurrence | production part 52 may be comprised by the sheet form affixed on socks. In addition, the charge generation unit 52 may be integrated with the non-charge generation unit 53 so as to have a sock shape.

Also, 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, the corner portion is particularly easily subjected to pressure. For this reason, it is possible to generate charges more effectively by arranging the

charge generation units

50 and 52 at the corners.

In the first embodiment and the second embodiment, footwear for correcting the O-leg is taken as an example, but the footwear for correcting the O-leg is not limited thereto. For example, by changing the arrangement of the

charge generation units

50 and 52, it can also be used for preventing hallux valgus, correcting other postures, stimulating the soles, and the like. Hereinafter, other embodiments will be described.

FIG. 5 (A) is a schematic view of a sock 102 according to the third embodiment, FIG. 5 (B) is a schematic view of a supporter 103 according to the fourth embodiment, and FIG. It is the schematic of the sanitary material 104 for moisture retention which concerns on 5 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 generation unit 52 is disposed in a portion 63 of the sock 102 other than the toe and the heel. The non-charge generating portion 53 is disposed on the toe portion 61 and the heel portion 62. Usually, when the user wears socks, the toe portion 61 and the heel portion 62 that are easily pressed and are in close contact with each other are easily stuffy, causing odors and germs to propagate.

The electric charge generated in the electric charge generation unit 52 attracts moisture. That is, moisture 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. For this reason, by arranging the charge generation part 52 in the portion 63 other than the toe and the heel, moisture generated in the toe portion 61 and the heel portion 62 is attracted to the portion 63 other than the toe and the heel. For this reason, the ease of stuffiness of the toe portion 61 and the heel portion 62 is reduced. Even if the user wears shoes from above the socks 102, the charge generation unit 52 is provided on the side closer to the shoe opening, so that the charge generation unit 52 touches the outside air to evaporate moisture. Furthermore, the stuffiness inside the shoe is reduced. As will be described in detail later, the charge generation unit 52 has an antibacterial effect or a bactericidal effect. For this reason, even if moisture does not completely evaporate, the growth of odors and germs can be reduced by the antibacterial effect or the bactericidal effect in the charge generation unit 52.

As shown in FIG. 5B, the supporter 103 according to the fourth embodiment has a shape covering 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 disposed in the heel portion 64 of the supporter 103. The non-charge generating portion 55 is disposed other than the heel portion 64. Further, the supporter 103 preferably includes a material that expands and contracts such as rubber. As a result, the supporter 103 is in close contact with the user's skin, and pressure is applied to the heel portion 64. When pressure is applied to the charge generation unit 54 disposed in the heel portion 64, moisture is attracted. Thereby, a moisturizing effect can be provided to the heel portion 64. The supporter 103 may further include a waterproof sheet (not shown) that covers the charge generation unit 54. Since the waterproof sheet prevents evaporation of moisture attracted to the charge generating portion 54, a higher moisturizing effect can be obtained. In addition, when the supporter 103 is mounted after applying a 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. The influence on the skin can be suppressed.

As shown in FIG. 5C, the moisturizing sanitary material 104 according to the fifth embodiment is applied to the wound of the skin 400 such as a bandage. The sanitary material 104 includes a charge generation unit 56 and a non-charge generation unit 57. When pressure is applied to the charge generation unit 56 of the sanitary material 104, moisture (in this case, body fluid secreted from the wound) is attracted to the charge generation unit 56. Thereby, since so-called moist healing (wet therapy) can be applied to the wound, healing of the wound can be accelerated. The sanitary material 104 may further include a waterproof sheet (not shown) that covers the charge generation unit 56. Since the moisture attracted to the charge generation unit 56 is prevented from evaporating by the waterproof sheet, a higher moisturizing effect can be obtained.

In addition, it has been known that the growth of bacteria can be suppressed by an electric field (see, for example, Tetsuaki Tudo, Hironori Korai, Hideaki Matsuoka, Junichi Koizumi, Kodansha: Microbial Control-Science and Engineering). (See Koichi Takagi, Application of High Voltage / Plasma Technology to Agriculture and Food, J.HTSJ, Vol.51, No.216). In addition, the electric current generating the electric field may cause a current to flow through a current path formed by moisture or a circuit formed by a local micro discharge phenomenon. It is conceivable that the cell membrane of the fungus is partially destroyed by this current, thereby suppressing the growth of the fungus. In addition, the bacterium referred to in the present embodiment includes bacteria, fungi, or microorganisms such as mites and fleas.

Therefore, the piezoelectric yarn 1 woven into the charge generation unit 56 directly exerts an antibacterial effect or a bactericidal effect by an electric field generated when the piezoelectric yarn 1 is close to an object having a predetermined potential such as a human body. Alternatively, the piezoelectric yarn 1 causes a current to flow when it is close to an object having a predetermined potential such as a human body through moisture such as sweat. Even with this current, the antibacterial effect or the bactericidal effect may be directly exhibited. Or radical species whose oxygen contained in moisture has been changed by the action of electric current or voltage, and radical species and other antibacterial chemical species (amine derivatives, etc.) produced by interaction with and / or catalytic action of additives contained in the fiber. ) May indirectly exert antibacterial or bactericidal effects. As radical species, generation of superoxide anion radical (active oxygen) or hydroxy radical can be considered. Thereby, when the electric charge generation part 56 of the sanitary material 104 exhibits 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.

The charge generation unit including the charge generation yarn that generates a charge by external energy as described above can be applied to various products such as clothing and medical members. For example, charge generation yarns include underwear (especially socks), towels, shoes and boots, general sportswear, hats, bedding (including futons, mattresses, sheets, pillows, pillow covers, etc.), toothbrushes, floss, Various filters (filters for water purifiers, air conditioners or air purifiers), plush toys, pet-related products (pet mats, pet clothes, pet clothes inners), various mat products (feet, hands, toilet seats, etc.) , Curtains, kitchen utensils (sponges or cloths, etc.), seats (cars, trains, airplanes, etc.), motorcycle helmet cushions and exterior materials, sofas, bandages, gauze, masks, sutures, doctors and patients It can be applied to clothes, supporters, sanitary goods, sports equipment (wear and glove inners, or garmen used in martial arts) or packaging materials. That. Moreover, it is applicable also to the structure provided with the electric charge generation part and the adhesive like cloth tape, a sticker sheet, etc. In this case, the charge generating part and the adhesive can be firmly connected by the anchor effect that the adhesive enters the charge generating part provided with the charge generating yarn.

Among the garments, in particular, socks (or supporters) always expand and contract along the joints due to movements such as walking, so that the piezoelectric yarn 1 generates a charge at a high frequency. In addition, the socks absorb moisture such as sweat and become a hotbed for the growth of bacteria, but the piezoelectric yarn 1 can suppress the growth of bacteria, and therefore has a remarkable effect as a countermeasure against bacteria. Hereinafter, an embodiment of a sock for anti-bacteria having the wearable fiber product according to the present invention will be described.

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

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

The sock 105 according to the sixth embodiment has a single structure, and is a knitted fabric knitted with two knitting yarns, that is, a yarn constituting the charge generation unit 52 and a yarn constituting the non-charge generation unit 53. May be. In the sock 105, the yarn that comes out on the front side and the yarn that goes out on the back side can be knitted into different types. In this case, as shown in FIG. 7A, the knitting yarn 71 that forms the inner surface (the front side of the drawing) is a yarn that constitutes the charge generation section 52. Further, as shown in FIG. 7B, the knitting yarn 72 that forms the outer (back side of the paper) surface is a yarn (cotton yarn or the like) constituting the non-charge generating portion 53. Thereby, when the user puts on the socks 105, the inner charge generation part 52 can be brought close to the user's skin.

The yarn constituting the charge generation unit 52 may include two types of piezoelectric yarns, S yarn that generates a negative charge and Z yarn that generates a positive charge. In this case, two types of charges, negative and positive, can be generated on the inner (front side) surface. By adjusting the usage amount of the Z yarn and the S yarn, the proportion of the polarity of the charge generated according to the application can be adjusted. In addition, the yarn constituting the charge generation unit 52 may include a yarn (cotton yarn or the like) that does not generate charges other than the Z yarn and the S yarn. In general, piezoelectric yarns have a poor touch compared to cotton yarns and the like, and skin may be stimulated when worn by a user. For this reason, by using a part of the yarn (such as cotton yarn) that does not generate charges in the charge generation unit 52, the touch of the charge generation unit 52 is improved and the irritation to the skin is alleviated.

Conventionally, antibacterial socks made of a material having antibacterial properties use yarns containing an antibacterial agent or metal. Such an existing antibacterial sock does not last long because the components are released, and may cause an allergic reaction due to drugs or the like. On the other hand, since the sock 105 according to the sixth embodiment includes the charge generation unit 52, the sock 105 is applied to an object (clothing or medical supplies such as a mask) used in the vicinity of an object having a predetermined potential such as a human body. In this case, the electric field or current generated in this case or the oxygen contained in the water is changed into radical species by them, thereby exhibiting an antibacterial effect (effect of suppressing the generation of bacteria) or a bactericidal effect (effect of killing the bacteria). Is. For this reason, the effect lasts for a long time and no allergic reaction due to drugs or the like occurs.

Since the charge generator 52 is formed inside the non-charge generator 53, the charge generator 52 is close to the user's skin. Since the distance between the charge generation unit 52 and the user's skin is reduced, charges are generated near the user's skin. Thereby, generation | occurrence | production of the mold | fungi and bacteria in a user's skin can be reduced more efficiently. In addition, since the non-charge generating portion 53 is provided on the surface of the sock 105 opposite to the user's skin, the charge generating portion 52 can be protected from the external environment.

Also, when the user wears socks, the outer portion of the socks is easily worn. Since the non-charge generating portion 53 is formed outside the charge generating portion 52 of the sock 105, the portion that easily wears is the non-charge generating portion 53. For this reason, wear of the charge generation part 52 is suppressed, and the antibacterial property of the sock 105 is maintained. A thread containing an antibacterial agent or metal may be used in combination. Thereby, antibacterial properties can be further improved.

In the sixth embodiment, the sock 105 in which the charge generation unit 52 is disposed on the inner side and the non-charge generation unit 53 is disposed on the outer side has been described. However, the non-charge generation unit 53 is disposed on the inner side and the charge is generated on the outer side. The present invention can also be applied to a configuration in which the generator 52 is disposed. For example, a protective material for a grip of tennis can be used. In a tennis grip, the surface on which the user grips the grip is on the outside. In the tennis grip protector, when the charge generating portion 52 is disposed on the outer surface, a charge is generated outside the user's skin when the user grips the grip. Thereby, generation | occurrence | production of the mold | fungi and microbe in a user's skin and the protection material of a tennis grip can be reduced more efficiently.

As shown in FIG. 6B, the sock 106 according to the seventh embodiment has a two-layer structure, and may include a layer made up of the charge generation unit 52 and a layer made up of the non-charge generation unit 53. Good. The outer side of the sock 106 is a layer made of the charge generation part 52, and the inner side is a layer made of the non-charge generation part 53. That is, the sock 106 according to the seventh embodiment has a structure in which the inner side and the outer side are oppositely arranged as compared with the sock 105 according to the sixth embodiment. For example, the sock 106 is formed by sticking a cloth made of the charge generation part 52 on the outside of the non-charge generation part 53 formed in the shape of the sock. Accordingly, when the user puts on the socks 106, the outer charge generation unit 52 can be arranged at a position far from the user's skin and not directly touching the user's skin. The charge generation unit 52 does not have to be formed so as to cover the entire inner surface of the non-charge generation unit 53, and is formed partially (for example, the toe portion 61 and / or the heel portion 62). May be.

The sock 106 according to the seventh embodiment has a single structure like the sock 105, and is a spliced yarn using two knitting yarns of a yarn constituting the charge generation unit 52 and a yarn constituting the non-charge generation unit 53. A knitted fabric may be used. In this case, as shown in FIG. 7B, the knitting yarn 71 that forms the outer surface (the back side of the drawing) is the yarn that constitutes the charge generation section 52. Further, as shown in FIG. 7A, the knitting yarn 72 forming the inner surface (the front side of the drawing) is a yarn (cotton yarn or the like) constituting the non-charge generating portion 53. Thereby, when the user puts on the socks 106, the outer charge generation part 52 can be kept away from the user's skin.

Similarly to the sock 105, the yarn constituting the charge generation unit 52 may include an S yarn that generates a negative charge and a Z yarn that generates a positive charge. In this case, since two types of charges, negative and positive, can be generated on the outer surface of the sock 106, the proportion of the polarity of the generated charge can be adjusted according to the application.

The yarn constituting the charge generation unit 52 may include a yarn (cotton yarn or the like) that does not generate charge other than the Z yarn and the S yarn. By weaving cotton yarn thicker than Z yarn and S yarn, the area in which Z yarn and S yarn are in direct contact with the outside is reduced, so that the durability of Z yarn and S yarn can be maintained.

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

Further, since the charge generation unit 52 is disposed at a position where it does not directly touch the user's skin, and the non-charge generation unit 53 made of cotton yarn or the like touches the user's skin, the touch of the sock 106 can be improved. In addition, since the charge generation unit 52 is formed outside 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 when the movement is 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. For this reason, since the charge can be efficiently generated from the charge generation unit 52 with a small movement, the antibacterial action and the like can be more efficiently exhibited.

The piezoelectric yarn 1 constituting the charge generating portion 52 has a lower hygroscopicity than the ordinary yarn constituting the non-charge generating portion 53. Since the charge generation part 52 is formed outside the non-charge generation part 53, the non-charge generation part 53 having excellent hygroscopicity is in contact with the body side of the user. For this reason, the sweat is absorbed by the non-charge generator 53, and the user's discomfort is reduced. In addition, the moisture absorbed by the non-charge generation unit 53 can be sterilized by the charge generated on the charge generation unit 52 side.

The charge generator 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 generating unit 53 is made of a material capable of generating heat by absorbing light, the non-charge generating unit 53 absorbs light from the outside and generates heat because the charge generating unit 52 is transparent. Further, since the non-charge generating portion 53 is disposed inside the charge generating portion 52, the heat generated by the non-charge generating portion 53 is not easily released to the outside, and the heat retaining property is improved. The non-charge generating portion 53 may be a material that generates heat when it expands and contracts. In this case, the charge generator 52 does not necessarily need to be a transparent material.

FIG. 8A is a view for explaining a 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 view for explaining a shoe 108 according to a modification 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 in the shoe 107 is shown in a transparent state.

As shown in FIG. 8A, a 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 part 83, which is a string in which a charge generation yarn that generates a charge by external energy is woven. Further, any one of the yarns woven into the shoelace 81 may be a charge generation yarn. For example, the shoelace 81 has one of S yarn or Z yarn. Moreover, 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 circle or a square.

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

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

When the user puts on the shoe 107 and tightens the shoelace 81, a force is applied to the shoelace 81 and a charge is generated. Further, when the user walks with the shoes 107 on, a force is applied to the shoelace 81, and thus electric charges are generated. As shown in FIG. 8B, the electric charge generated in the shoelace 81 forms an electrostatic capacity via the metal wire 82 between the ground line G where the shoe sole of the shoe 107 contacts and the metal wire 82. . Thereby, generation | occurrence | production of the mold | fungi and bacteria in the main body 80 of the shoe 107 can be reduced. In addition, the antibacterial effect can be maintained because the charges generated by using the shoes 107 without using chemicals are used. Instead of the metal wire 82, a nonwoven fabric containing metal fibers may be disposed on the main body 80. This also provides the same effect, and a larger capacitance can be formed because the metal can be arranged in a wider range than the metal wire 82.

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 to a predetermined position from the shoelace 81 to the upper part of the shoe sole of the main body 80. One metal wire 84 may be provided, or a plurality of metal wires 84 may be provided. The metal wire 84 connects between the shoelace 81 and the metal wire 86. The thin metal layer 87 is provided on the insole portion of the shoe 108. The shape of the metal thin layer 87 may be an insole shape as in the first embodiment of the shoe, and is not particularly limited as long as it is a shape provided in the insole portion of the shoe. The metal wire 85 is provided so as to connect the lower part of the shoe sole of the main body 80 in contact with the ground from the metal thin layer 87. One metal wire 85 may be provided, 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 and a charge is generated. The electric charge generated in the shoelace 81 forms a capacitance between the lower portion of the shoe sole of the shoe 107 and the shoelace 81 as shown in FIG. 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 shoe sole of the shoe 107 and the shoelace 81, the place where the electrostatic capacity is formed is the metal It can be selected where the line 86 and the thin metal layer 87 are disposed. Thereby, the location where the electrostatic capacitance is formed can be expanded.

Further, the place where the electrostatic capacity is formed is the distance from the distance between the bottom of the shoe sole and the shoelace 81 by the amount of the metal wire 84, the metal wire 85, the metal wire 86, and the metal thin layer 87. It can be shortened. That is, the place where the electrostatic capacitance is formed is a section from the metal wire 86 to the thin metal layer 87. Therefore, the generated capacitance can be increased, and the efficacy such as antibacterial properties can be enhanced. Note that only one of the metal wire 84 and the metal wire 85 may be provided.

As another modified example of the shoe 107, a metal fiber may be knitted into the main body 80 where the shoelace 81 around the shoelace 81 contacts. As a result, as in the case of the shoe 108, the portion where the electrostatic capacitance is formed is expanded in the horizontal direction, or the distance is reduced by the amount of the metal fiber from the distance between the shoe sole and the metal wire 82. can do.

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

As shown in FIG. 10, a 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 pulling string 95, and a motor 96.

The shoe 109 includes a piezoelectric fabric 91 in a part of the main body 90. The piezoelectric fabric 91 corresponds to the above-described charge generation unit. The main body 90 other than the piezoelectric fabric 91 corresponds to the above-described non-charge generating unit. The piezoelectric fabric 91 is disposed so as to wrap around the back of the user's foot. In addition, although the example which arrange | positions the piezoelectric fabric 91 near the base of a toe was shown in FIG. 10, you may arrange | position in the vicinity of an arch, the vicinity of a heel, etc. The piezoelectric fabric 91 may be disposed at these multiple locations. By disposing the piezoelectric fabric 91 at a place where the influence of the movement of the foot is large, charges can be efficiently generated from the piezoelectric fabric 91.

The wire 92 is arranged so as to wind the back from the back of the user's foot. In FIG. 10, the wire 92 is disposed at one place, but may be disposed at a plurality of places. The place where the wire 92 is disposed 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 disposed at a plurality of locations, the length, width, and the like of each wire 92 can be appropriately changed according to the locations where the wires 92 are disposed. The wire 92 may be disposed at a place where it does not interfere with the piezoelectric fabric 91. Thereby, the influence on the piezoelectric fabric 91 due to the tightening of the wire 92 can be suppressed.

The circuit board 93 is arranged near the upper toe of the user's foot. In addition, although the example which arrange | positions the circuit board 93 near the toe upper part of a toe was shown in FIG. 10, you may arrange | position near an ankle, the vicinity of a heel, etc. 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 disposed near the instep of the user so as to contact the wire 92. The pin 94 is for maintaining the position of the wire 92. As shown in FIG. 11A, the wire 92 is stretched by two pins 94 and a pulling string 95. The state shown in FIG. 11A is a state in which the user is stopped, and almost no tensile force is applied to the wire 92 from the traction 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 a voltage generated in the piezoelectric fabric 91. The piezoelectric fabric 91 is connected to the control unit 97 via a wiring line disposed in the main body 90. The control unit 97 is, 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 rotation number of the motor 96 to the drive unit 98 according to the detected voltage. An example of the motor 96 is a stepping motor. Here, the rotation number of the motor 96 indicates the total number of rotations of the motor 96. The tow string 95 is connected to a 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 string 95. For example, when the number of revolutions according to the detected voltage is proportional to the magnitude of the voltage, several ranges are provided for the magnitude of the voltage, and the number of revolutions is changed stepwise in the range, or a predetermined number For example, when the voltage continues to be detected for a predetermined time, the rotation speed is changed. If the rotation speed is changed when the 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 suddenly loosens, and the shoe 109 falls over. A sense of incongruity can be prevented.

In such a configuration, when the user walks or jogs, the tension of the wire 92 is adjusted according to the voltage generated in the piezoelectric fabric 91. Thereby, the tightening degree of the shoes 109 is adjusted according to the user's walking condition and running condition, and the shoe 109 is integrated with the user's foot and easily fits 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 in accordance with the detected pressure, and the wire 92 is slightly pulled by the pulling 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 in accordance with the detected pressure, and the wire 92 is greatly pulled by the tow string 95. In this way, the degree of tightening of the shoe 109 by the wire 92 is adjusted according to the movement of the user, so that the user can have a comfortable fit. On the contrary, when the movement of the user is small, it is not tightened, so that an unnecessary burden on the user's foot is prevented and air permeability is maintained.

Further, by adopting the above-described piezoelectric fabric 91 using PLLA, the weight can be reduced as compared with the case of using a conventional ceramic piezoelectric body (PZT) without increasing the thickness of the sole. Since PLLA has flexibility, if the electrode formed on the surface is made of an organic material having flexibility similar to PLLA, it can be prevented from cracking due to a load or impact from a foot caused by jogging or walking. . Moreover, environmental load can also be reduced by using PLLA.

FIG. 13 is a view for explaining a garment 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 pins 94, similar to the shoe 109 according to the ninth embodiment. The piezoelectric fabric 91 can be disposed at any position on the clothing 120, but is preferably disposed at a location where it is easy to detect the movement of the user's body. In the garment 120, the wire 92 is provided at a sleeve portion of the garment 120 substantially parallel to the opening of the sleeve. Note that the wire 92 is not limited to the sleeve, and can be provided at a location where the user wants to fit the user's body when the garment 120 is worn. Further, a plurality of wires 92 may be provided or provided on a net. Thereby, a variation can be given to the movement which the wire 92 expands and contracts.

The circuit board 93 is preferably arranged on the upper part of the shoulder or the like which does not easily disturb the user's operation. 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. Thereby, it can prevent that the main body 121 turns up by the wire 92 being tightened. The description of the other configuration is the same as that of the ninth embodiment, and will be omitted.

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. Thereby, the tightening degree of the garment 120 is adjusted according to the user's operation, and the garment 120 is integrated with the user's body, so that the user's body can be easily fitted. Thus, since the tightening degree of the clothing 120 by the wire 92 is adjusted according to the user's movement, the user can obtain a comfortable fit. Therefore, even when the user performs a violent operation, the hem of the clothing 120 does not get in the way, and the user can operate smoothly. On the contrary, when the movement of the user is small, it is not tightened, so that an unnecessary burden on the user's body is prevented and air permeability is maintained. In addition, although clothing 120 was illustrated as 10th Embodiment, clothing 120 is an example, Comprising: It can adapt also to other clothing, such as pants and a jacket.

Finally, the description of the present embodiment should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

1, ... Piezoelectric yarn (charge generating yarn)
50, 52, 54, 56 ...

Charge generators

51, 53, 55, 57 ... Non-charge generators 101 to 109, 120 ... Socks, shoes, supporters, sanitary materials, clothing (wearable fiber products)
61, 62 ... toe part, heel part (corner part)
101 ... socks, shoes (footwear)

Claims

A cloth-like charge generation part including a charge generation thread that generates charge by energy from outside;
A cloth-like non-charge generating portion including a non-charge generating yarn that does not generate charges due to external energy;
Wearable textile products.
With corners,
The wearable fiber product according to claim 1, wherein the charge generation unit is disposed at the corner portion.
Footwear comprising the wearable fiber product according to claim 1 or 2,
The footwear is disposed on the toe and / or heel portion of the footwear.
A footwear comprising the wearable fiber product according to claim 1,
The charge generation part is footwear disposed on a portion other than a toe and a heel of the footwear.
The wearable fiber product according to claim 1 or 2,
The charge generation yarn includes a piezoelectric body.
The wearable fiber product according to claim 1, 2, or 5,
The charge generating yarn has a higher elongation than the non-charge generating yarn.
The wearable fiber product according to claim 1, 2, or 5,
The charge generation part has a lower elongation than the non-charge generation part.
The footwear according to claim 3 or 4,
One end or the other end of the charge generation unit is connected to the non-charge generation unit.
The footwear according to claim 8,
The charge generation part is surrounded by the non-charge generation part.