WO2024096377A1

WO2024096377A1 - Heating fiber having plurality of through holes for selective heat generation

Info

Publication number: WO2024096377A1
Application number: PCT/KR2023/016021
Authority: WO
Inventors: 지승현; 이유나; 현상일
Original assignee: 주식회사 엠셀
Priority date: 2022-10-31
Filing date: 2023-10-17
Publication date: 2024-05-10

Abstract

A heating fiber having a plurality of through holes comprises a fiber fabric, a fiber circuit, and a heating element pattern. The fiber circuit includes a first wire and a second wire. Each of the first and second wires is formed by weaving conductive yarns on the fiber fabric in a predetermined direction. The second wire is spaced apart from the first wire. The heating element pattern is printed on the fiber fabric and fiber circuit and emits heat on the basis of the potential difference between the first wire and the second wire. The fiber circuit further includes a plurality of third wires. Each of the plurality of third wires is formed by weaving the conductive yarns on the fiber fabric in a direction from the first wire to the second wire, and is in contact with the first wire and the second wire. A plurality of first through holes and a plurality of second through holes which insulate the first wire and the second wire from each other are formed on the plurality of third wires. The plurality of first through holes are located closer to the first wire than to the second wire. The plurality of second through holes are located closer to the second wire than to the first wire.

Description

Heating fiber with multiple through holes for selective heat generation

The present invention relates to a heating fiber, and more specifically, to a heating fiber that includes a fiber circuit woven from conductive yarn, and has through-holes that insulate part of the fiber circuit being formed, so that power is selectively supplied to some areas.

Heating fibers that generate heat by receiving electricity are widely used in various fields for purposes such as maintaining body temperature or keeping warm. For example, a vehicle seat with built-in heating fibers can maintain or control the temperature of the seat by dissipating heat using electric power. In addition, heating fibers can be applied to steering wheels, consoles, and steering wheels. Sheets and parts with heating fibers can control the temperature and humidity inside the vehicle, contributing to creating a comfortable vehicle interior environment.

Meanwhile, in the manufacturing process of conventional heating fibers, soldering is required between the conductive yarn and the heating element. In the case of heating fibers to which soldering is applied, technical problems arise related to the durability of the solder, the flexibility of the entire heating fiber, and the user's wearing comfort. In addition, when the heating fiber includes a metal heating wire, there is a problem that the user's wearing comfort is reduced and there is a possibility of a fire due to the heating wire being bent.

In other words, in order to solve the above-mentioned problems, there is a need for the development of heating fibers that do not use soldering or metal heating wires.

The present invention is intended to solve the above-described conventional problems. Since wiring is woven from conductive yarn to transmit power on the textile fabric, the possibility of fire due to bending of the heating wire is low, and the heating fiber is lightweight and has improved wearing comfort. The purpose is to provide

In addition, the purpose of the present invention is to provide a heating fiber with improved flexibility, fit, productivity, and durability because the heating element is printed on the fiber fabric and does not require separate soldering work.

In addition, the purpose of the present invention is to provide a heating fiber that is easy to produce by allowing the producer to selectively determine the heating area since a plurality of through holes are formed to insulate some areas of the fiber circuit.

In addition, the present invention aims to provide a heating fiber with improved flexibility, fit, and durability since it has a heating element pattern that can be manufactured into various shapes.

The heating fiber with a plurality of through holes formed according to an embodiment of the present invention may include a fiber fabric, a fiber circuit, and a heating element pattern.

The fiber circuit may include a first wire and a second wire. Each of the first wiring and the second wiring may be formed by weaving conductive yarn in a predetermined direction on the textile fabric. The second wiring may be positioned to be spaced apart from the first wiring.

The heating element pattern may be formed by printing a material containing carbon nanotubes on the fiber fabric on which the fiber circuit is formed. The heating element pattern may emit heat based on a potential difference between the first wire and the second wire.

The fiber circuit may further include a plurality of third wires. Each of the plurality of third wires may be formed on the textile fabric by weaving the conductive yarn in a direction from the first wire to the second wire. Each of the plurality of third wires may be in contact with the first wire and the second wire.

A plurality of first through holes and a plurality of second through holes that insulate the first wiring and the second wiring from each other may be formed on the plurality of third wirings.

The plurality of first through holes may be located closer to the first wiring than to the second wiring. The plurality of second through holes may be located closer to the second wiring than to the first wiring.

The heating element pattern may be electrically connected to at least two third wires among the plurality of third wires.

The heating fiber formed with a plurality of through holes according to an embodiment of the present invention may further include a power supply device that provides power. The power device may be electrically connected to the first wiring and the second wiring.

In the heating fiber in which a plurality of through holes are formed according to an embodiment of the present invention, the distance between two adjacent third wires among the plurality of third wires may be constant.

In the heating fiber formed with a plurality of through holes according to an embodiment of the present invention, the fiber circuit may further include a fourth wiring.

The fourth wiring is formed by weaving conductive yarn in a predetermined direction on the textile fabric, and may be located between the first wiring and the second wiring. The fourth wiring may include a first portion and a plurality of second portions.

The first part may be electrically connected only to a first wire among the first wire and the second wire. Each of the plurality of second parts may be electrically connected only to the second wire among the first and second wires.

The heating fiber formed with a plurality of through holes according to an embodiment of the present invention may further include a power supply device that provides power. The power device may be electrically connected to the second wiring and the fourth wiring.

In the heating fiber formed with a plurality of through holes according to an embodiment of the present invention, one of the plurality of second through holes may be located between the first part and the second wiring. The remainder of the plurality of second through holes may be located between any two of the plurality of second parts. A third through hole that insulates the first part and the plurality of second parts from each other may be formed between the first part and the plurality of second parts.

In the heating fiber with a plurality of through holes formed according to an embodiment of the present invention, the fourth wiring may be located closer to the second wiring than the first wiring.

In the heating fiber formed with a plurality of through holes according to an embodiment of the present invention, the plurality of first through holes, the plurality of second through holes, and the third through hole are formed by mechanical punching. It can be.

In the heating fiber formed with a plurality of through holes according to an embodiment of the present invention, the first wire, the second wire, the plurality of third wires, and the fourth wire each have 10 or more strands and 20 or less strands. May contain conductive yarn. The width of each of the first wiring, the second wiring, and the plurality of third wirings may be 3 mm or more and 8 mm or less. The width of the fourth wiring may be 6 mm or more and 8 mm or less.

The heating element pattern of the heating fiber formed with a plurality of through holes according to an embodiment of the present invention may have a shape in which a unit pattern is repeated. The unit pattern may be any one of squares, pentagons, and hexagons.

The heating element pattern of the heating fiber with a plurality of through holes formed according to an embodiment of the present invention is formed by printing carbon nanotube paste on the fiber fabric based on plate making having a shape corresponding to the unit pattern, or the fiber Carbon nanotube paste can be printed on the entire surface of the fabric and then formed through laser cutting.

According to one embodiment of the present invention, since wiring made of conductive yarn is provided on the textile fabric to transmit power, it is possible to provide a heating fiber that is light and has improved wearing comfort and has a low possibility of fire due to bending of the hot wire.

According to one embodiment of the present invention, since the heating element is printed on the fiber fabric, separate soldering work is not required, and thus it is possible to provide a heating fiber with improved flexibility, fit, productivity, and durability.

According to one embodiment of the present invention, a plurality of through holes are formed to insulate some areas of the fiber circuit, so that the producer can selectively determine the heating area and provide a heating fiber that is easy to produce. .

According to one embodiment of the present invention, since the present invention has a heating element pattern that can be manufactured in various shapes, it is possible to provide a heating fiber with improved flexibility, fit, and durability.

Figure 1 exemplarily shows a heating fiber formed with a plurality of through holes according to an embodiment of the present invention.

Figure 2 exemplarily shows a heating fiber having a plurality of through holes formed according to another embodiment of the present invention.

Figure 3 exemplarily shows a heating element pattern having a hexagonal unit pattern in another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings. In the drawings, the proportions and dimensions of components may be exaggerated for effective explanation of technical content.

Terms such as "include" are intended to designate the presence of features, numbers, steps, operations, components, parts, or a combination thereof described in the specification, but do not include one or more other features, numbers, steps, operations, or configurations. It should be understood that this does not exclude in advance the possibility of the presence or addition of elements, parts, or combinations thereof.

Additionally, when a component is described as “above” it means above or below the component, and does not necessarily mean that it is located above the direction of gravity.

Additionally, when a component is described as being “connected” or “coupled” to another component, it does not only mean that the component is directly connected or coupled to the other component, but also indirectly through another component. It may also include cases where it is connected or combined.

In addition, terms such as first and second may be used to describe a certain component, but these terms are only used to distinguish the component from other components, and the essence or order of the component is determined by the term. It is not intended to limit the order or the like.

Figure 1 exemplarily shows the appearance of a heating fiber (HF) in which a plurality of through holes are formed according to an embodiment of the present invention.

Referring to Figure 1, the heating fiber (HF) in which a plurality of through holes are formed according to an embodiment of the present invention includes a fiber fabric (BS), a fiber circuit (FC), a heating element pattern (HT), and a power supply (PS). may include.

Textile fabric (BS) may include natural fibers and synthetic fibers. A fiber circuit (FC) can be formed on a fiber fabric (BS) by weaving it with conductive yarn. Additionally, the fiber fabric (BS) can support the heating element pattern (HT) and the power supply (PS).

Conductive yarn may be a fiber made for the purpose of conducting electricity. For example, the conductive yarn may be carbon fiber, conductive polymer fiber, etc.

The fiber circuit FC may include a first wire LN1, a second wire LN2, and a plurality of third wires LN3. A voltage may be applied between the first wiring (LN1) and the second wiring (LN2) by the power supply device (PS). Additionally, the heating element pattern HT may be located between the first wiring LN1 and the second wiring LN2. The plurality of third wires LN3 may transmit power to the heating element pattern HT.

Each of the first wiring (LN1) and the second wiring (LN2) may be formed by weaving conductive yarn in a predetermined direction on the textile fabric (BS). The second wiring LN2 may be positioned to be spaced apart from the first wiring LN1.

Each of the plurality of third wires LN3 may be formed by weaving conductive yarn on the textile fabric BS in the direction from the first wire LN1 to the second wire LN2. It may be in contact with the first wiring (LN1) and the second wiring (LN2).

That is, since the fiber circuit (FC) of the present invention is formed by weaving conductive yarns, it does not require a separate wire for power transmission. Therefore, using the present invention, it is possible to provide a heating fiber product that improves wearing comfort and has a low risk of fire due to wire bending because it does not use separate wires.

A plurality of first through holes (CH1) and a plurality of second through holes (CH2) are formed on the plurality of third wirings (LN3) to insulate the first wiring (LN1) and the second wiring (LN2) from each other. It can be. The plurality of first through holes CH1 may be located closer to the first wiring LN1 than to the second wiring LN2. The plurality of second through holes CH2 may be located closer to the second wiring LN2 than to the first wiring LN1.

In one embodiment of the present invention, one of the first through hole CH1 and the second through hole CH2 may be formed in each of the plurality of third wires LN3. That is, each of the plurality of third wires LN3 has a portion electrically connected to the first wire LN1 and the remaining portion electrically connected to the second wire LN2 through the through hole CH1 or CH2. It is divided into A voltage may be applied between a portion of one of the plurality of third wirings LN3 and the remaining portion of another one of the plurality of third wirings LN3. Based on this voltage, the heating element pattern (HT) can emit heat.

In one embodiment of the present invention, the distance DT between two adjacent third wires LN3 among the plurality of third wires LN3 may be constant. Accordingly, the heat emitted from the entire heating element pattern HT may be uniform. If the distance DT between two adjacent third wires LN3 is not constant, heat generation of the heating element pattern HT may be uneven.

The heating element pattern (HT) may be formed by printing a material containing carbon nanotubes on the fiber fabric (BS) on which the fiber circuit (FC) is formed. Additionally, the heating element pattern HT may emit heat based on the potential difference between the first wiring LN1 and the second wiring LN2. The heating element pattern HT may be electrically connected to at least two third wires LN3 among the plurality of third wires LN3. Heating element patterns (HT) containing carbon nanotubes have better thermal efficiency than metal heating wires, and the temperature rises quickly when generating heat. Additionally, it emits far-infrared rays, which are beneficial to the user's health. In addition, it has the advantage of having very high durability against mechanical stimulation such as pulling, folding, and washing.

In one embodiment of the present invention, the thickness of the heating element pattern (HT) may be 0.1 mm or more and 0.3 mm or less. Preferably, the thickness of the heating element pattern (HT) may be 0.2 mm. If the thickness of the heating element pattern (HT) is less than 0.1 mm, the durability of the heating element pattern (HT) may be reduced. On the other hand, if the thickness of the heating element pattern (HT) is 0.3 mm or more, the user may feel a foreign body sensation due to the heating element pattern (HT), and the wearing sensation may be reduced. Therefore, it is desirable to form the heating element pattern HT with a thickness within the above-mentioned range. Using the heating element pattern (HT) of the present invention, it is possible to produce a product that is more than 50% thinner and lighter than when using a hot wire heating element.

In one embodiment of the present invention, the heating element pattern (HT) may be formed by printing carbon nanotube paste on the fiber fabric (BS) based on plate making having a shape corresponding to the unit pattern (PT). Alternatively, the heating element pattern (HT) may be formed through laser cutting after printing carbon nanotube paste on one side of the fiber fabric (BS).

A power supply (PS) may provide power. Additionally, the power supply device PS may be electrically connected to the first wiring LN1 and the second wiring LN2. In one embodiment of the present invention, the power supply PS may be omitted.

Figure 2 exemplarily shows the appearance of a heating fiber (HF) with a plurality of through holes formed according to another embodiment of the present invention.

Referring to FIG. 2, the fiber circuit (FC-1) of the heating fiber (HF-1) in which the plurality of through holes of the present invention is formed may further include a fourth wiring (LN4). The fourth wiring LN4 may be formed by weaving conductive yarn in a predetermined direction on the textile fabric BS. Additionally, the fourth wire LN4 may be located between the first wire LN1 and the second wire LN2. Additionally, the fourth wiring LN4 may include a first portion SC1 and a plurality of second portions SC2.

The first portion SC1 may be electrically connected only to the first wiring LN1 among the first wiring LN1 and the second wiring LN2. Each of the plurality of second portions SC2 may be electrically connected only to the second wiring LN2 among the first wiring LN1 and the second wiring LN2.

The heating fiber (HF-1) in which a plurality of through holes are formed according to an embodiment of the present invention may further include a power supply (PS). The power supply device PS may be electrically connected to the second wiring LN2 and the fourth wiring LN4. Accordingly, a voltage may be applied between the first and second wirings LN1 and LN2, which are electrically connected to the first portion SC1 of the fourth wiring LN4. The voltage applied between the first wire LN1 and the second wire LN2 may be transmitted to the heating element pattern HT through the plurality of third wires LN3.

In the heating fiber (HF-1) formed with a plurality of through holes according to an embodiment of the present invention, one of the plurality of second through holes (CH2a) is connected to the first portion (SC1) and the second wiring (LN2). It can be located in between. Additionally, the remaining CH2b of the plurality of second through-holes may be located between any two of the plurality of second parts SC2. Additionally, the third through hole CH3 may be formed between the first part SC1 and the plurality of second parts SC2. The third through hole CH3 may insulate the first portion SC1 and the plurality of second portions SC2 from each other.

In the heating fiber (HF-1) in which a plurality of through holes are formed according to an embodiment of the present invention, the fourth wiring (LN4) may be located closer to the second wiring (LN2) than the first wiring (LN1). . As shown in FIG. 2, using the fourth wiring LN4, the power supply device PS can be placed at the corner of the textile fabric BS. Accordingly, it is possible to prevent the foreign body sensation that the user may feel due to the power supply device (PS) disposed in the center of the textile fabric (BS).

In the heating fiber (HF-1) formed with a plurality of through holes according to an embodiment of the present invention, a plurality of first through holes (CH1), a plurality of second through holes (CH2), and a third through hole (CH3) can be formed by mechanical punching. That is, the user can adjust the power provided to the heating element pattern (HT) and the heating position to suit the purpose by determining the positions of the through holes and performing the punching operation.

In the heating fiber (HF-1) formed with a plurality of through holes according to an embodiment of the present invention, a first wire (LN1), a second wire (LN2), a plurality of third wires (LN3), and a fourth wire Each wiring (LN4) may include 10 or more and 20 or more conductive yarns. When the first wiring (LN1), the second wiring (LN2), the plurality of third wirings (LN3), and the fourth wiring (LN4) each include less than 10 conductive yarns, durability and heat generation efficiency are reduced. may deteriorate. On the other hand, when the first wiring (LN1), the second wiring (LN2), the plurality of third wirings (LN3), and the fourth wiring (LN4) each include more than 20 strands of conductive yarn, the user may feel a foreign body sensation. The feeling of wearing it may be reduced. Preferably, each of the first wiring (LN1), the second wiring (LN2), the plurality of third wirings (LN3), and the fourth wiring (LN4) may include 15 strands of conductive yarn.

Additionally, the width of each of the first wiring (LN1), the second wiring (LN2), and the fourth wiring (LN4) may be 3 mm or more and 8 mm or less. If the width of each of the first wiring (LN1), the second wiring (LN2), and the fourth wiring (LN4) is less than 3 mm, durability is reduced, and if the width is more than 8 mm, it may cause a foreign body sensation. Preferably, the width of each of the first wiring (LN1), the second wiring (LN2), and the fourth wiring (LN4) may be 5 mm.

Additionally, the width of each of the plurality of third wires LN3 may be 6 mm or more and 8 mm or less. If the width of each of the plurality of third wires LN3 is less than 6 mm, power transfer efficiency is reduced, and if it is more than 8 mm, it may cause a foreign body sensation. Preferably, the width of each of the plurality of third wires LN3 may be 7 mm.

Figure 3 exemplarily shows the appearance of a heating element pattern (HT-1) having a hexagonal unit pattern (PT-1) in another embodiment (HF-2) of the present invention.

In one embodiment of the present invention, the heating element pattern (HT-1) may have a shape in which the unit pattern (PT-1) is repeated. Additionally, the unit pattern (PT-1) of the heating element pattern (HT-1) may be one of a square, a pentagon, and a hexagon.

For example, in the case of the heating element pattern (HT-1) where the unit pattern (PT-1) is a hexagon, it is resistant to external shock and has high elasticity. In addition, the heating element pattern (HT-1) of the above-described structure has the advantage of high space utilization and the ability to uniformly radiate heat over a wide area with the minimum area of the heating element pattern (HT-1).

Although described with reference to examples, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. There will be. In addition, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, and all technical ideas within the scope of the following patent claims and equivalents should be construed as being included in the scope of the present invention. .

According to the present invention, since wiring made of conductive yarn is provided on the textile fabric, it is possible to manufacture a heating fiber with a low possibility of fire and improved wearing comfort. Additionally, according to the present invention, since the heating element is printed on the fiber fabric, no separate soldering work is required, thereby improving the flexibility, fit, productivity, and durability of the heating fiber. In addition, according to the present invention, since a plurality of through holes are formed, the producer can selectively determine the heating area to manufacture a heating fiber that is easy to produce. Therefore, the present invention has high industrial applicability.

Claims

Textile fabric;

It includes a first wire and a second wire, wherein each of the first wire and the second wire is formed by weaving a conductive yarn on the textile fabric in a predetermined direction, and the second wire is spaced apart from the first wire. fiber circuit located; and

A material containing carbon nanotubes is printed on the fiber fabric on which the fiber circuit is formed, and heat is emitted based on a potential difference between the first wiring and the second wiring. Includes a heating element pattern,

The fiber circuit further includes a plurality of third wires, and each of the plurality of third wires is formed by weaving the conductive yarn on the textile fabric in a direction from the first wire to the second wire, thereby forming the first wire. and in contact with the second wiring,

A plurality of first through holes and a plurality of second through holes that insulate the first wiring and the second wiring from each other are formed on the plurality of third wirings,

The plurality of first through holes are located closer to the first wiring than the second wiring, and the plurality of second through holes are located closer to the second wiring than the first wiring,

The heating element pattern is a heating fiber having a plurality of through holes electrically connected to at least two third wires among the plurality of third wires.
According to claim 1,

Further comprising a power device that provides power,

The power supply device is a heating fiber having a plurality of through holes electrically connected to the first wiring and the second wiring.
According to claim 1,

A heating fiber having a plurality of through holes formed at a constant distance between two adjacent third wires among the plurality of third wires.
According to claim 1,

The fiber circuit further includes a fourth wiring,

The fourth wiring is formed by weaving conductive yarn in a predetermined direction on the textile fabric, and is located between the first wiring and the second wiring,

The fourth wiring includes a first portion and a plurality of second portions,

The first part is electrically connected only to the first wire of the first wire and the second wire, and each of the plurality of second parts is electrically connected only to the second wire of the first wire and the second wire. A heating fiber formed with a plurality of connected through holes.
According to clause 4,

Further comprising a power device that provides power,

The power supply device is a heating fiber having a plurality of through holes electrically connected to the second wiring and the fourth wiring.
According to clause 4,

One of the plurality of second through holes is located between the first part and the second wiring, and the remaining of the plurality of second through holes are located between any two of the plurality of second parts. Located between

A heating fiber having a plurality of through holes formed between the first part and the plurality of second parts and a third through hole insulating the first part and the plurality of second parts from each other.
According to clause 6,

The fourth wiring is a heating fiber having a plurality of through holes located closer to the second wiring than the first wiring.
According to clause 6,

A heating fiber having a plurality of through holes, wherein the plurality of first through holes, the plurality of second through holes, and the third through hole are formed by mechanical punching.
According to clause 6,

Each of the first wiring, the second wiring, the plurality of third wirings, and the fourth wiring includes 10 to 20 strands of conductive yarn,

A heating fiber having a plurality of through holes formed in which each of the first wiring, the second wiring, and the fourth wiring has a width of 3 mm to 8 mm, and each of the plurality of third wirings has a width of 6 mm to 8 mm.
According to clause 4,

The heating element pattern has a shape in which a unit pattern is repeated,

The unit pattern is a heating fiber formed with a plurality of through holes that are either square, pentagon, or hexagon.
According to claim 10,

The heating element pattern is formed by printing carbon nanotube paste on the fiber fabric based on plate making having a shape corresponding to the unit pattern, or by printing carbon nanotube paste on one side of the fiber fabric and then laser cutting. A heating fiber formed with a plurality of through holes.