KR102052461B1 - 3d air-mesh textile with resistive sensing information - Google Patents

Abstract

The 3D air mesh fabric having resistive sensing information may include first and second layers forming upper and lower surfaces, respectively, a support member for supporting the first and second layers between the first and second layers, and the first and second layers. It includes a conductive yarn is knitted in a mesh network structure on the first and second layers to electrically connect the first and second layers.

Description

3D Air Mesh Fabric with Resistive Sensing Information {3D AIR-MESH TEXTILE WITH RESISTIVE SENSING INFORMATION}

The present invention relates to a 3D air mesh fabric, and more particularly, to a 3D air mesh fabric having resistive sensing information produced by connecting a conductive yarn having a predetermined resistance to a 3D air mesh fabric commonly used in clothing fibers and industrial fibers. It is about.

In conventional electronic textile fibers, a capacitive sensor is mainly used to measure the applied load and the resulting pressure.

Conventional capacitive sensors have a conductive fabric layer that serves as a magnetic pole, placed up and down, as in the Republic of Korea Patent Application Publication No. 10-2012-0122269 and Republic of Korea Patent Registration No. 10-1658308, and the elastic force between the dielectric It has a form in which the fiber foam layer is inserted. The capacitive sensor uses the principle that the capacitance value changes as the thickness of the upper and lower conductive layers changes due to the applied load or the pressure thereof.

However, the conventional capacitive sensor should be arranged in a two-dimensional form basically, and thus has the disadvantage of impairing breathability and washability when placed in the fiber.

In addition, the conventional capacitive sensor has a large influence on the desired measurement value due to noise caused by peripheral factors (human body approach, lengthening signal line, connecting terminal between fabric and signal line, etc.) when measuring small capacitance value. As it is received, separate work such as ground shield of the ground plate and the signal line is required to be insensitive to noise, and thus there is a problem of lowering work efficiency.

Meanwhile, as shown in FIG. 1, the conventional 3D air mesh fabric has a structure in which the filament yarn 11 having elasticity is inserted between the two mesh fabric layers 10 as a support, and has excellent breathability and resilience. Since the elastic force has a good property, it is widely used for mat type for shock absorption.

Republic of Korea Patent Publication No. 10-2012-0122269 Republic of Korea Patent No. 10-1658308

Accordingly, the technical problem of the present invention has been conceived in this regard, the object of the present invention is to implement a resistance sensor and to improve the productivity of the work simply by knitting a conductive yarn having a predetermined resistance on the 3D air mesh fabric A 3D air mesh fabric with information.

The 3D air mesh fabric having resistive sensing information for realizing the object of the present invention includes first and second layers, and first and second layers between the first and second layers forming upper and lower surfaces, respectively. And a support member supporting two layers and a conductive yarn knitted on the first and second layers to electrically connect the first and second layers.

In example embodiments, the conductive yarns may be deformed according to the pressure applied to the first layer or the second layer, and the contact area between the conductive yarns may increase.

In one embodiment, each of the first and second layers may be formed of a mesh network structure having a plurality of vent holes.

In one embodiment, the support member may be a filament pile yarn having an elastic force.

In one embodiment, when the pressure is applied, the support member is compressively deformed, and when the applied pressure disappears, the deformed support member is restored to restore the deformed conductor.

In one embodiment, the conductive yarn may include a first conductive yarn electrically connecting the first and second layers.

In one embodiment, the first conductive yarn may be connected between the first and second layers facing each other in the vertical direction, or may be connected between the first and second layers facing each other in the diagonal vertical direction.

In one embodiment, the first conductor may be connected in a straight line between the first and second layers, without the pressure applied.

In an embodiment, the separation distance between the first and second layers decreases around the position where the pressure is applied, and the first conductive yarns increase in contact area with each other as the separation distance decreases, thereby increasing the first conductive yarns. The resistance across both ends may decrease.

In one embodiment, the conductive yarns are electrically connected between the upper layer units of the first layer and electrically connected between the second conductive yarns electrically connected with the first conductive yarns and the lower layer units of the second layer. And a third conductive yarn electrically connected to the first conductive yarn.

In one embodiment, the second and third conductors may be connected to an external resistance or voltage measurement circuit.

In an embodiment, the first conductive part is formed on the upper surface of the first layer to be electrically connected to the first conductive yarn and the second conductive part is formed on the lower surface of the second layer to be electrically connected to the first conductive yarn. It may include.

In one embodiment, the first and second conducting portions may be connected to an external resistance or voltage measurement circuit.

In one embodiment, the first and second conductive portions may be a film or a film formed on the entire outer surface of the first and second layers.

According to the present embodiments, by using the conventional 3D air mesh fabric, it is possible to maintain the excellent breathability, excellent restoring force and excellent elastic force of the characteristics of the conventional 3D air mesh fabric as it is, and to induce air circulation smoothly While inhibiting the growth of bacteria, such as harmful to the fungus, when the pressure is applied can be sensed the application of the pressure.

In particular, when the first layer or the second layer is deformed by an external force, the conductive yarns that are knitted and connected are also deformed, and thus the contact area between the conductive yarns is expanded to measure the resistance by changing the resistance by using a property of low resistance. By comparing the front and rear it is possible to determine whether the pressure is applied and the magnitude of the pressure.

To this end, it is possible to obtain the sensing information by simply connecting only the conductive yarn to the conventional 3D air mesh fabric, it is possible to manufacture the air mesh fabric with ease of use and high usability.

Furthermore, in order to measure the resistance change between the conductive yarns from the outside, a conductive yarn electrically connecting the first and second layers is formed, or a conductive portion is formed on the outer surface of the first and second layers, By using a simple manufacturing process it is possible to manufacture a fabric capable of resistance sensing.

In addition, it is possible to monitor the deformation of the fabric, such as the thickness change that occurs during use, it is possible to inform the replacement time of the fabric.

1 is an image showing a conventional 3D air mesh fabric.
Figure 2 is a schematic cross-sectional view showing a 3D air mesh fabric having resistive sensing information according to an embodiment of the present invention.
FIG. 3 is a schematic diagram illustrating an enlarged shape in which a conductive yarn is connected in the 3D air mesh fabric of FIG. 2.
Figure 4 is a schematic diagram showing an example of a circuit for detecting the resistance of the conductive yarn in the 3D air mesh fabric of FIG.
5 is a schematic diagram showing another example of a circuit for detecting the resistance of the conductive yarn in the 3D air mesh fabric of FIG.
6 is a schematic cross-sectional view showing a state in which an external force is applied to the 3D air mesh fabric of FIG.
7 is a graph showing a resistance value when the external force applied with time increases.
8 is a schematic cross-sectional view showing a 3D air mesh fabric having resistive sensing information according to another embodiment of the present invention.

As the inventive concept allows for various changes and numerous modifications, the embodiments will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "consist of" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

1 is an image showing a conventional 3D air mesh fabric.

As shown in FIG. 1, the conventional 3D air mesh fabric has a structure in which elastic filament yarns 11 are inserted into and connected as supporters between both mesh fabric layers 10, and pressure is applied to upper or lower layers. When applied, the elastic filament yarn 11 is compressed, and when the applied pressure disappears, the filament yarn 11 is characterized in that it is restored to its original position again.

2 is a schematic diagram showing a 3D air mesh fabric having resistive sensing information according to an embodiment of the present invention. FIG. 3 is a schematic diagram illustrating an enlarged shape in which a conductive yarn is connected in the 3D air mesh fabric of FIG. 2.

Referring to FIG. 2, the 3D air mesh fabric 20 having resistive sensing information according to an embodiment of the present invention may include first and second layers 100 and 200, a support member 300, and a conductive yarn 400. ).

The structures of the first and second layers 100 and 200 and the support member 300 in this embodiment are substantially the same as the conventional 3D air mesh fabric structure described with reference to FIG. 1. However, in the present embodiment, the 3D air mesh fabric 20 is further provided with the conductive yarn 400, and further includes the conductive yarn 400, so that pressure may be sensed.

That is, the first and second layers 100 and 200 may be formed in a plate shape by forming a layer of an upper surface and a lower surface made of a knitted structure of a mesh network structure.

In addition, a plurality of vent holes 110 may be formed in cross-sections of the first and second layers 100 and 200, and thus the first and second layers 100 and 200 may have a mesh network structure. Can be formed.

That is, the first and second layers 100 and 200 have a mesh network structure as shown in FIG. 1, and since the cross-sectional view is shown in FIG. 2, the first and second layers 100 and 200 have circular structures spaced apart from each other. Although shown as being, it has a structure substantially connected to each other.

Meanwhile, the plurality of ventilation holes 110 may be formed in both the first and second layers 100 and 200, but in some cases, the ventilation holes 110 may be formed in any one of the first and second layers 100 and 200. Only can be formed. In addition, the plurality of vent holes 110 formed in the first and second layers 100 and 200 may have different sizes or may have the same size.

When the plurality of ventilation holes 110 are formed in the first and second layers 100 and 200, the air permeability and the drying force of the first and second layers 100 and 200 may be improved. There is.

The support member 300 supporting the first and second layers 100 and 200 is formed between the first and second layers 100 and 200. The support member 300 may be, for example, a filament pile yarn having an elastic force.

Therefore, by connecting the space formed between the first and second layers (100, 200) with a filament pile yarn having elastic force, the first and second layers (100, 200) into a single fiber layer having a predetermined thickness Can be formed.

In addition, the filament pile yarn, which is the support member 300, may be intricately entangled and connect between the first and second layers 100 and 200, and the entangled structure may be formed in various ways and arbitrarily.

In this case, the support member 300 is elastically deformed according to the external pressure. The support member 300 moves toward the opposite layer when an external force is applied to one of the layers, and then exerts an elastic force to restore the original state when the external force disappears.

Therefore, the support member 300 is composed of a material that is compressed when pressed by an external pressure, and can be quickly restored to its original shape when the external pressure is removed.

For example, the support member 300 may be formed of one of well-known thermoplastic elastomers such as polyolefin, PVC, polystyrene, polyester, polyurethane, polyamide, and the like. Acrylonitrile Butadiene Rubber), SBR (Styrene Butadiene Rubber), butyl rubber (BR), isoprene rubber (IR), chloroprene rubber (CR), silicone rubber and the like.

The conductive yarn 400 includes first to third conductive yarns 410, 420, and 430.

As illustrated, the first conductive yarn 410 is horizontal in the longitudinal direction of each of the first and second layers 100 and 200, that is, an extension direction of the first and second layers 100 and 200. It is knitted around a vertical direction, perpendicular to the direction.

That is, the first conductive yarn 410 knitted on each of the first and second layers 100 and 200 connects the first and second layers 100 and 200 vertically.

In this case, as shown in FIG. 2, the first conductive yarns 410 connect between the first and second layers 100 and 200 facing each other in the vertical direction, or face each other in the diagonal vertical direction. The first and second layers 100 and 200 may be connected to each other.

Thus, the first layer 100 includes first to third upper layer units 101, 102, 103 adjacent to each other on one cross section, and the second layer 200 adjacent to each other on one cross section. If including the first to third lower layer units 201, 202, 203, the first conductive yarn 410 extending from the second upper layer unit 102 is directly below the second lower layer unit 202 Or the first and third lower layer units 201 and 203 below the diagonal line.

Similarly, the first conductive yarn 410 extending from the second lower layer unit 202 is connected to the second upper layer unit 102 directly above, or the first and third upper layer units below the diagonal line ( 101 and 103 may also be connected.

In addition, the first conductive yarn 410 preferably connects the layer units connected to each other in a shortest distance, that is, in a straight line. Therefore, as will be described later, an increase in contact between the first conductive yarns 410 may be more easily measured according to the application of pressure.

Meanwhile, the first and second layers 100 and 200 have a circular cross-sectional structure spaced apart from each other, as shown in FIG. 2, wherein the first and second layers 100 and 200 are respectively The conductive yarns 410 knitted in the substantially wrap around the circular structure.

In this case, the cross-sectional shape of each of the first and second layers 100 and 200 is shown as a circle in FIG. 2, but may be formed in a rounded shape such as a circle or an oval, and thus, as shown in FIG. 3. As shown, the first conductive yarns 410 may be connected in a form surrounding the outer circumferential surfaces of the first and second layers 100 and 200 of the respective rounded shapes.

That is, since it is not easy to directly measure the resistance of the first conductive yarn 410 connecting between the first and second layers 100 and 200, the first conductive yarn 410 in the present embodiment. The first and second layers 100 and 200 are formed in a mesh network structure to surround each of the rounded shapes while being electrically meshed with the first and second layers 100 and 200. The resistance of the first conductive yarn 410 can be easily measured through this connection.

In this case, the first conductive yarn 410 may be composed of a knitted fabric of a mesh network structure, it may be made of a conductive material having a predetermined resistance. The conductive material may be, for example, silver, copper, aluminum, iron, zinc, nickel, or an alloy thereof or a conductive material of carbon nanotubes, but is not limited thereto.

As described above, the first and second layers 100 and 200 are electrically connected to each other by the first conductive yarn 410 having electrical conductivity, and thus measured through the first conductive yarn 410. It is possible to measure whether the pressure is applied and the magnitude of the applied pressure through the change of the resistance, which will be described later.

On the other hand, since it is difficult to measure the change in the resistance of the first conductive yarn 410 from the outside only by the first conductive yarn 410 connecting only between the first and second layers (100, 200), this embodiment In FIG. 3, the second conductive yarn 420 electrically connecting only the first layer 100 and the third conductive yarn 430 electrically connecting only the second layer 200 may be further included.

That is, the second conductive yarn 420 is connected to the entire plate-shaped first layer 100 extending in the horizontal direction in the undeformed state, and the third conductive yarn 430 is in the horizontal direction in the undeformed state. It is connected to the entire second layer 200 of the plate shape extending to.

In this case, each of the second and third conductive yarns 420 and 430 is connected to each other through the first and second layers 100 and 200, or the first and second layers 100 and 200. ) Along the outer surface or along the inner surface of the first and second layers 100 and 200 (that is, between the support member 300).

Thus, the second conductive yarn 420 is electrically connected to one end of the first conductive yarn 410 connected to the layer units of each of the first layers 100, and the third conductive yarn 430 is formed of the first conductive yarn. The second layer 200 is electrically connected to the other end of the first conductive yarn 410 connected to each layer unit.

In this case, the second and third conductive yarns 420 and 430 may be made of the same material as the first conductive yarn 410 and may be made of a conductive material having a predetermined resistance.

Thus, the first to third conductive yarns 410, 420, 430 are electrically connected to each other, and the second and third conductive yarns 420, 430 are external to the 3D air mesh fabric 20. It is extended to the, through the second and third conductive yarns (420, 430) can measure the change in the resistance of the first conductive yarn 410.

Figure 4 is a schematic diagram showing an example of a circuit for detecting the resistance of the conductive yarn in the 3D air mesh fabric of FIG. 5 is a schematic diagram showing another example of a circuit for detecting the resistance of the conductive yarn in the 3D air mesh fabric of FIG.

First, referring to FIG. 4 as a method for sensing the resistance of the conductive yarn, the second conductive yarn 420 formed in the mesh network structure in the first layer 100 is connected to a power source to generate a voltage (V). The third conductive yarn 430, which is supplied and connected to the resistor R1 and knitted in a mesh network structure to the second layer 200, is grounded.

In this case, an output voltage Vsense of one end of the second conductive yarn 420 knitted in a mesh network structure in the first layer 100 may be measured, and the first and second voltages may be measured through the output voltage Vsense. The output resistance Rsense applied to both ends of the first conductive yarn 410 knitted in a mesh network structure between the second layers 100 and 200 may be measured.

The output resistance Rsense is measured by the following equation (1).

Rsense = R1 * Vsense / (V-Vsense) Expression (1)

Alternatively, referring to FIG. 5 as another method for sensing the resistance of the conductive yarn, the second and third conductive yarns 410 and 420 formed in a mesh network structure in each of the first and second layers 100. ) Is connected to the Wheatstone bridge circuit.

In this case, the initial resistance (R) of the Wheatstone bridge circuit is as shown in the following equation (2),

R1 = R2 = R3 = R Formula (2)

The resistances of the resistors R1, R2, and R3 included in the circuit are set together with the resistance values.

In this case, the output voltage Vout of the Wheatstone bridge circuit can be measured through a circuit as shown in FIG. 5, and the following equation (3) is obtained using the output voltage Vout and the initial resistance R. The change amount (ΔR) of the resistance of the first conductive yarn 410 can be obtained by the following equation.

Vout = ΔR * V / (4R + 2ΔR) equation (3)

Therefore, when the change amount ΔR of the resistance is obtained through Equation (3), the first conductive yarn knitted in a mesh network structure between the first and second layers 100 and 200 through Equation (4). The output resistance (Rsense) applied to both ends of 410 can be measured.

Rsense = R + ΔR Equation (4)

That is, as described above, the second and third conductive yarns 420 and 430 are connected to a separate resistance or voltage measurement circuit to the outside of the 3D air mesh fabric, and based on the resistance or voltage change, the 3D air mesh The resistance change of the first conductive yarn 410 connected to the inside of the fabric may be measured, and through this, the pressure applied to the 3D air mesh fabric may be measured.

FIG. 6 is a schematic cross-sectional view illustrating a state in which an external force is applied to the 3D air mesh fabric of FIG. 2, wherein the first layer 100 and the support member 300 are pressed downward by an external force.

In this case, the first conductive yarn 410 may also be subjected to mechanical deformation while being pressed down according to the application of pressure. That is, the separation distance between the first and second layers 100 and 200 is reduced with respect to the position where the pressure is applied.

As shown in FIG. 6, the first conductive yarn 410 connected between the first and second layers 100 and 200 in a straight line by the mechanical deformation has a shape such as a curve according to a decrease in the separation distance. The area of contact with each other between the first conductive yarns 410 is increased.

As such, when the distance between the first and second layers 100 and 200 decreases and the contact between the first conductive yarns 410 increases, the first and second layers 100 and 200 respectively. The resistance across both ends of the first conductive yarn 410 knitted in a mesh network structure is also changed.

That is, when a compressive force is applied as the external force, the distance between the first and second layers 100 and 200 decreases, the contact area between the first conductive yarns 410 increases, and the first conductive yarn ( When the contact area between the 410 increases, the conduction state between the first conductive yarns 410 increases, so that the first knitted in a mesh network structure between the first and second layers 100 and 200. Resistance across both ends of the conductive yarn 410 is reduced.

Furthermore, as the applied external force is increased, the contact area between the first conductive yarns 410 is further increased, so that an energized state is increased, and thus resistance across both ends of the first conductive yarns 410 is increased. Is further reduced.

This reduction in resistance across the first conductive yarn 410 is, as described with reference to Figures 4 and 5, the output voltage (Vsense and) between the second and third conductive yarns (420, 430) It can be checked externally by measuring Vout). In addition, the amount of change in the resistance may be confirmed based on the amount of change in the output voltage, and thus the magnitude of the applied pressure may be estimated.

That is, in this embodiment, by measuring the output voltage, it is possible to measure the presence or absence of the applied pressure and the magnitude of the pressure.

In FIG. 6, an external force is applied to the first layer 100. However, an external force may be applied to the second layer 200, and the first and second layers 100 and 200 may be applied. External force may be applied simultaneously.

In this case, the change of the resistance according to the application of the external force and the increase in the magnitude of the external force occurs as described above.

7 is a graph showing a resistance value when the external force applied with time increases.

Referring to FIG. 7, the resistance value R0 initially measured using the resistance value measuring circuit of FIG. 4 or 5 described above, and the first external force F1 are applied to the first layer 100 for a predetermined time. The first resistance value R1 when applied and the second resistance value R2 when the second external force F2 greater than the first external force F1 is applied to the first layer 100 afterwards. One result.

That is, as the magnitude of the external force applied increases, the degree of deformation of the first conductive yarn 410 also increases, thereby increasing the contact area between the first conductive yarns 410, thereby reducing the resistance (R0> R1> R2). Done.

Therefore, as described above, the magnitude of the reduced resistance may be measured and the magnitude of the pressure applied to the first layer 100 may be obtained using the reduced resistance, and the pressure may be determined based on the change of the resistance value. Can be.

This is a characteristic in which resistance changes with respect to deformation of the first conductive yarn 410, that is, when the first conductive yarn 410 is deformed with respect to an external force (load or pressure), the first conductive yarns 410 knit together are connected to each other. As the contact area between the liver becomes wider and the electrical conductivity increases, the resistance changes.

On the other hand, as described above, the support member 300 is made of a material having an elastic restoring force, and when the external force disappears, the support member 300 moves upward from the deformed state and is restored to its original state. Accordingly, as the support member 300 formed between the first and second layers 100 and 200 is restored to its original state, the first conductive yarn 410 compressed and deformed may also be restored together. Accordingly, the external force applied to the first layer 100 may be repeatedly measured.

The first conductive yarn 410 is formed in a two-dimensional plane like a conventional capacitive sensor and is not disposed between the first and second layers 100 and 200. As the knitted fabric is formed as a line having a predetermined diameter, the first and the second openings do not cover the plurality of through holes 310 of the support member 300 formed between the first and second layers 100 and 200. It may be formed between the two layers (100, 200).

Accordingly, the conventional capacitive sensor is basically formed in the form of a two-dimensional plane and disposed between the first and second layers 100 and 200, and thus, the first and second layers 100 and 200. By covering the through holes 310 of the support member 300 formed between the can prevent the phenomenon of lowering the breathability can overcome the disadvantages of the conventional capacitive sensor, of the support member 300 By not blocking the through holes 310, air permeability through the through holes 310 may be improved, thereby activating air circulation more effectively, and thereby inhibiting the growth of bacteria such as molds harmful to the human body.

Meanwhile, in the case of the conventional 3D air mesh material, the elastic restoring force is much superior to other materials, and structural deformation occurs over time. At this time, by using the first conductive yarn 410 in the present embodiment to determine the structural deformation of the 3D air mesh fabric through the measured resistance by measuring the resistance that changes and changes in accordance with the deformation of the 3D air mesh fabric. Through this, it is possible to know when to replace the 3D air mesh fabric.

8 is a schematic cross-sectional view showing a 3D air mesh fabric having resistive sensing information according to another embodiment of the present invention.

In the present embodiment, the first conductive yarn 410 is connected only between the first and second layers (100, 200) facing each other, the upper surface of the first layer 100 and the second layer 200 The resistive sensing information described with reference to FIGS. 1 to 6 is the same as that of the 3D air mesh fabric, except that the conductive parts 500 are formed on the bottom surface of the bottom surface.

That is, as shown in FIG. 8, in the present embodiment, the conductive part 500 is formed on the upper surface of the first layer 100 and the lower surface of the second layer 200 to face each other. The first conductive yarns 410 connecting the second layers 100 and 200 and the first and second layers 100 and 200 are electrically connected to each other.

That is, a first conductive portion 510 is formed on the top surface of the first layer 100, a second conductive portion 520 is formed on the bottom surface of the second layer 200, and the first conductive portion 510 and The second conductive portion 520 is electrically connected to the first conductive yarn 410.

On the other hand, as described above, in order to electrically connect the first and second layers 100 and 200 to each other, the first conductive yarn 410 has a circular shape in each of the first and second layers 100 and 200. Since it is formed to surround the structure of the shape, by forming the first conductive portion 510 and the second conductive portion 520 on the upper surface of the first layer 100 and the lower surface of the second layer 200, respectively The first conductive yarn 410 and the conductive parts 500 are electrically connected.

Also, although not illustrated, the first conductive part 510 and the second conductive part 520 may be connected to an external resistance or voltage measuring circuit described with reference to FIGS. 4 and 5.

Thus, the change in resistance of the first conductive yarn 410 can be measured from the outside.

In this case, the first and second conductive parts 510 and 520 may be formed by coating conductive ink on the upper surface of the first layer 100 and the lower surface of the second layer 200, respectively. It may be formed through a process of forming various conductive layers or conductive films.

In addition, the first and second conductive parts 510 and 520 may be formed in a single film or a film form on the entire outer surface of the first and second layers 100 and 200, and maintain excellent breathability. To this end, such a membrane or film may have a plurality of vent holes.

As a result, the process is relatively simpler than the process of forming the second and third conductive yarns 420 and 430, and is electrically connected to the first conductive yarn 410 and may be connected to an external resistance or voltage measurement circuit. It works.

According to the present embodiments, by using the conventional 3D air mesh fabric, it is possible to maintain the excellent breathability, excellent restoring force and excellent elastic force of the characteristics of the conventional 3D air mesh fabric as it is, and to induce air circulation smoothly While inhibiting the growth of bacteria, such as harmful to the fungus, when the pressure is applied can be sensed the application of the pressure.

In particular, when the first layer or the second layer is deformed by an external force, the conductive yarns that are knitted and connected are also deformed, and thus the contact area between the conductive yarns is expanded to measure the resistance by changing the resistance by using a property of low resistance. By comparing the front and rear it is possible to determine whether the pressure is applied and the magnitude of the pressure.

To this end, it is possible to obtain the sensing information by simply connecting only the conductive yarn to the conventional 3D air mesh fabric, it is possible to manufacture the air mesh fabric with ease of use and high usability.

Furthermore, in order to measure the resistance change between the conductive yarns from the outside, a conductive yarn electrically connecting the first and second layers is formed, or a conductive portion is formed on the outer surface of the first and second layers, By using a simple manufacturing process it is possible to manufacture a fabric capable of resistance sensing.

In addition, it is possible to monitor the deformation of the fabric, such as the thickness change that occurs during use, it is possible to inform the replacement time of the fabric.

While the foregoing has been described with reference to preferred embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

100: first layer 101, 102, 103: upper layer units
200: second layer 201, 202, 203: lower layer units
300: support member 400: conductive yarn
410: first missionary 420: second missionary
430: the third missionary 500: the conducting unit
510: first conductive portion 520: second conductive portion

Claims (13)

First and second layers forming top and bottom surfaces, respectively;
A support member having elastic force between the first and second layers and entangled to form a fibrous layer having a predetermined thickness to support the first and second layers; And
A conductive yarn knitted on the first and second layers to electrically connect the first and second layers,
3D air mesh fabric, characterized in that the conductive yarn is deformed according to the pressure applied to the first layer or the second layer and the contact area between the conductive yarns increases. The method of claim 1,
Each of the first and second layers is a 3D air mesh fabric, characterized in that formed in a mesh network structure having a plurality of vent holes. The method of claim 1, wherein the support member,
3D air mesh fabric, characterized in that the filament pile yarn having an elastic force. The method of claim 3,
When the pressure is applied, the support member is deformed compression,
3D air mesh fabric, characterized in that when the applied pressure disappears the deformed support member is restored to restore the deformed conductive yarns. The method of claim 1, wherein the conductive yarn,
3D air mesh fabric, characterized in that it comprises a first conductive yarn electrically connecting the first and second layers. The method of claim 5, wherein the first conductor
3D air mesh fabric, characterized in that connecting between the first and second layers facing each other in the vertical direction, or connecting between the first and second layers facing each other in the diagonal vertical direction. The method of claim 5, wherein the first conductor
3D air mesh fabric, characterized in that connected in a straight line between the first and second layers in the state that the pressure is not applied. The method of claim 7, wherein
The separation distance between the first and second layers is reduced around the position where the pressure is applied,
The first conductive yarn is a 3D air mesh fabric, characterized in that the contact area increases with each other as the separation distance decreases, so that the resistance across the first conductive yarn is reduced. The method of claim 5, wherein the evangelist,
A second conductive yarn electrically connected between upper layer units of the first layer and electrically connected to the first conductive yarn; And
3D air mesh fabric further comprising a third conductive yarn electrically connected between the lower layer units of the second layer and electrically connected to the first conductive yarn. The method of claim 9,
And the second and third conductive yarns are connected to an external resistance or voltage measurement circuit. The method of claim 5,
A first conductive part formed on an upper surface of the first layer to be electrically connected to the first conductive yarn; And
3D air mesh fabric further comprises a second conductive portion formed to be electrically connected to the first conductive yarns on the lower surface of the second layer. The method of claim 11,
And the first and second conductive parts are connected to an external resistance or voltage measurement circuit. The method of claim 11,
The first and second conductive parts are 3D air mesh fabric, characterized in that the film or film formed on the entire outer surface of the first and second layers.

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