JPS6127085A - Conductive wiring material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a conductive fabric material comprising a double-layered fabric and a conductive wire.

<Prior Art> Various products are known in which a conductive wire material, that is, a wire material such as an electric wire or a heating cord that can conduct current regardless of its resistance value, is combined with a fiber fabric. For example, when the conductive wire is a heat-generating cord, products such as electric blankets, electric carpets, electric bed blankets, bed warmer 1 lap covers, and warmer suits are known in which the conductive wire material is a heat generating cord.

There are various methods for producing these products, including (a) sewing or gluing a conductive wire onto one piece of fabric and covering the area where the conductive wire is placed with another piece of fabric;
A method of sewing from above to make a product (B) A method of forming a piece of fabric into a bag, inserting a conductive wire into it, and sewing from above to fix the conductive wire to make a product (H) ) In the case of electric carpets, there are methods such as attaching or sewing heat-generating cords and temperature sensor wires to the backing material of the carpet, and then pasting a carpet fabric on top of the backing material to make the product.

In the above-mentioned known manufacturing methods, either adhesion or sewing is used to fix the conductive wire to the fabric. Therefore, the manufacturing process is complicated, which is one of the causes of increasing the price of the final product.

In addition, electric blankets and the like made by the conventionally known manufacturing method have the problem that the feel of the conductive wires arranged in the fabric is visible on the outside, that is, the feel of the conductive wires is raised in a convex shape, which seriously impairs the feeling of use of the product. have In addition, when a heating cord is used as the conductive wire, the conductive wire is firmly fixed to the fabric by adhesive or sewing, so the temperature distribution on the surface of the product is different from the part where the conductive wire is placed and away from it. The problem is that there are large differences between the parts.

<Problems to be Solved by the Invention> As is clear from the above, conventional products in which a conductive wire material is combined with a fabric have various problems. The present invention solves these problems, and the feel of the conductive wire arranged in the fabric is less likely to be visible to the outside, has good cushioning properties, and is easy to manufacture. The purpose is to provide a conductive fabric material that is inexpensive.

Means for Solving the Problems As a result of intensive research to solve the above-mentioned problems, the present inventors have solved the above-mentioned problems by creating a new method for arranging conductive wires in the fabric. We have found a solution to this problem and have arrived at the present invention.

That is, an object of the present invention is to provide a conductive fabric material comprising a double-layered fabric consisting of two ground textures on the front and back sides and a connecting portion connecting the ground textures, and a conductive wire material, the conductive wire material comprising: This is achieved by an electrically conductive fabric material that is housed in the joint of the double-layered fabric or incorporated into the fabric of the double-layered fabric.

As used herein, the term "conductive wire" refers to all wires that can conduct current, regardless of their resistance value. Therefore, for example, the following linear objects are included in the conductive wire. Note that these conductive wires can be used as they are or coated with an insulating material.

Fine metal wire; 109 each of metal fibers, carbon fibers, graphite fibers, and synthetic fibers such as conductive polymer materials
% or composite strings with other fibers; strings made of 100% synthetic fibers with metal attached to the surface by metal vapor deposition, metal plating, coating, etc. or composite strings with other fibers Carr is 7 black as a conductivity imparting agent for a state body.
A string-like body made of 100% synthetic fiber or synthetic rubber mixed with graphite, metal powder, etc., or a composite string-like body with other materials.

"Storing" as used in the present invention refers to both inserting a conductive wire into the connection part after the double structure fabric is formed, and forming the double structure fabric while inserting the conductive wire into the connection part. shall mean. In addition, the term "incorporate" as used herein means knitting or weaving into a conductive wire at the same time when a double-structured fabric is knitted or woven using a knitting machine or a loom.

The following is a schematic perspective view showing one embodiment of the conductive fabric material of the present invention. In FIG. 1, numerals 1 and 2 indicate the ground weave on the back, and numeral 3 indicates a connecting portion made of a plurality of threads that connects the two ground weaves on the front and back sides. A double-layered fabric having the structure shown in FIG. 1 can be manufactured using a warp knitting machine or a double loom equipped with a double-row needle bed. However, it is preferable to manufacture a double-layered fabric using a warp knitting machine because the manufacturing speed is faster and the fabric on the front and back sides can have good elasticity and drapability, as shown in Figure 3. An example of a knitting structure for knitting a double structure fabric is shown. In this case, a double raschel machine equipped with a two-row needle bed and five guides is used, and the yarn shown as L 1 + L2 in the figure forms a surface texture of the yarn fed from the needle, and the guide shown as L4 t Ijli. The lining structure is formed by the yarn supplied,
The two ground textures on the front and back sides are connected by a connecting thread supplied from a guide indicated by L3. As a result, as shown in No. 1-,
A plurality of connecting yarns extending perpendicularly to the surface of the substantially double-layered fabric are disposed, and gaps are formed between the plurality of substantially parallel connecting yarns, and gaps are formed between the plurality of substantially parallel connecting yarns. Since it is easy to spread, a conductive wire can be inserted into the gap in a meandering manner as shown in Figure 1. However, the organization chart shown in Figure 3 is just an example. Applications of conductive fabric materials It can be changed arbitrarily to suit.

Next, an embodiment in which a conductive wire is incorporated into the ground structure of a conductive fabric material will be described with reference to FIGS. 2 and 4. In this case, the conductive wire 4 is the thread 5 constituting the ground structure.
It is incorporated as part of the local organization. Since the conductive wire is incorporated as part of the base structure when knitting (or weaving) the double-structured fabric in this way, the conductive fabric material of the present invention can be easily produced. In FIG. 2, 6 indicates a connecting thread. Note that FIG. 4 shows an example of a knitting structure for knitting a double-layered fabric having the structure shown in FIG. 2.

The thickness of the connecting portion of the double-layered fabric used in the present invention is not particularly limited, nor is the fiber material used. However, in order to eliminate the uneven feeling caused by the wire during use and to improve the flexibility, which is the purpose of the present invention, it is necessary to make the connecting part thicker than 1.5 times the diameter of the conductive wire to be stored or incorporated. preferable. Furthermore, depending on the purpose of use, it may be necessary to double the effect of the present invention. In that case, it is preferable to use a high-rigidity yarn, such as a monofilament yarn made of synthetic fiber, as the connecting yarn, which has good resilience against external forces. The curliness is significantly improved.

5 and 6 are cross-sectional views schematically showing conductive fabric materials containing or incorporating the conductive wire of the present invention,
FIG. 7 is a model sectional view of a recently known conductive fabric material in which one side of the ground structure 7 is raised by a conductive wire 4. As shown in FIG.

In the present invention, when storing the conductive wire in the connecting part,
By simply inserting the Ki wire between the connecting threads, the Ki wire stays in place within the double-layered fabric without shifting its position, and the complex adhesion and sewing processes of the wire can be streamlined. It goes without saying that when the wire rod is incorporated into the base structure, the adhesion process and sewing process of the wire rod can be streamlined in the same way. In addition, the conductive fabric material according to the present invention absorbs the unevenness caused by the wire material at the connecting part, and when touched from the outside, does not feel uneven, so it does not cause discomfort during use, and the cushioning properties are improved. . Furthermore, when the heating cord is used as a wire to generate heat, the conductive fabric material of the present invention contains a large amount of air in the connecting portion.
Local heat generation near the wire can be avoided and heat can be uniformly conducted to the entire surface of the conductive material.

If the conductive fabric material of the present invention is made using a heating cord as a conductive wire, it can be used as an electric blanket, an electric bed sheet, or a ped warmer.
It shows excellent performance as Furthermore, even when the conductive fabric material is made for purposes other than heating elements, it is possible to maintain a good feeling of use and excellent cushioning.

<Example> Specific examples of the conductive fabric material of the present invention will be shown below.

Example 1 Polyester long fiber 150 was used as the yarn forming the front and back textures.
Using 34 denier filament yarn and the same 1807" polyester monofilament yarn as the connecting yarn, the double raschel machine is equipped with 18 knitting needles per inch, with the structure shown in Figure 3. A structural fabric was obtained.

At this time, the interval between the two rows of needle beds was set at 6 tas, so the thickness of the obtained double-structured fabric was 5.5 m. A conductive wire with a diameter of 3 mm made of a copper-nickel alloy with a resistivity of 50 μΩm and coated with an insulating material is meanderingly inserted into the joint of the double-layered fabric at intervals of about 10 crn, and the conductive fabric material is I got it. This conductive fabric material was sandwiched between a bed sheet and a bed blanket, and electricity was applied to the inserted conductive wire so that the power consumption per hour was 200 wh.

After about 20 minutes, the surface temperature of the blanket was measured and it was 30.
The temperature was in the range ±2°C. When I lay down on this bed blanket, I didn't feel the unevenness of the heating cord, and since it was a monofilament connecting thread, it was moderately smooth.
/ It was something with a nature.

Example 2 Using the same knitting machine as in Example 1, 1152 Nm of acrylic spun yarn was used for the ground weave, and 1/3 ON of acrylic spun yarn was used for the connection part.
Knit a double-structured fabric with the knitting structure shown in Figure 4 using M. At this time, a conductive wire of the same quality as the conductive wire used in Example 1 and having a diameter of 1.5 m was used as a guide for L3. I set it with 150 out and woven it into the fabric on the back. The double structure fabric incorporating the obtained conductive wire was made into a width of 120crrI.
It was cut to a length of 180 crn, the assembled wires were connected, and used as a pet warmer. In this case as well, there was no unevenness caused by the incorporated wire material, resulting in a product with good heat retention properties.

<Effects of the Invention> Since the conductive fabric material of the present invention is configured as described above, the feel of the conductive gland material arranged in the fabric is less likely to be visible to the outside, and the cushioning properties are good. In addition, since no bonding or sewing steps are required for arranging the conductive wire, it can be provided at low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the conductive fabric material of the present invention. FIG. 2 is an enlarged perspective view of a knitted fabric loop showing another embodiment of the conductive fabric material of the present invention. Figure 3 is the first
FIG. 2 is an organization chart showing an example of a knitting structure for knitting the conductive fabric material shown in the figure. FIG. 4 is a diagram similar to FIG. 3 for knitting the conductive fabric material of FIG. 2; Figures 5 to 7 are cross-sectional views that schematically show the arrangement of conductive wires. Figure 5 shows the conductive fabric material shown in Figure 1, and Figure 6 shows the conductive fabric material shown in Figure 2. Conductive fabric material: FIG. 7 shows the case of a conventionally known conductive fabric material. DESCRIPTION OF SYMBOLS 1... Outer fabric structure, 2... Lining fabric, 3... Connecting part, 4... Conductive wire material, 5... Thread for forming base fabric, 6...
... Connecting yarn, 7.8... Fabric used in conventional conductive fabric materials.

Claims (1)

[Claims] 1. A conductive fabric material comprising a double structure fabric consisting of two front and back ground structures and a connecting portion connecting the ground structures, and a conductive wire, wherein the conductive wire has the double structure. A conductive fabric material characterized by being housed in a connecting part of a fabric or incorporated into the ground structure of a double-layered fabric.