JPH07118373B2 - Warp knitting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a warp-knit type heat-generating knitted fabric in which metal resistance filaments are appropriately knitted between courses, and can be used as a planar heating element.

[Conventional technology]

2. Description of the Related Art Conventionally, there is known a therapeutic device in which a metal filament is woven into a tissue of a woven fabric such as a plain weave to form a planar heating element, which is attached to the body and kept warm.

However, in the case of a woven fabric, a tubular heating knitted fabric in which this metal filament is knitted into a weft knitting knitted by a circular knitting machine or a flat knitting machine is also known because of its poor elasticity (Japanese Patent Publication No. 62-16).
(Publication No. 649).

[Problems to be solved by the invention]

However, since the heat-generated knitted by the circular knitting machine described in JP-B-62-16649 is tubular,
For example, it is convenient as a treatment tool to be worn on the arm or leg,
If this is a flat heating element, it must be cut,
It has a drawback that the subsequent wiring becomes complicated.

In addition, since it is knitted in a tubular shape, the size of the heating element is determined by the cylinder diameter of the knitting machine, and it is impossible to make a heating element having a size larger than a certain size. Further, even in the case of a flat knitting machine, not only is it impossible to knit a product having a width exceeding a certain level, but also there is a problem that the desired expansion and contraction in the lateral direction is too great to obtain desired dimensions with high accuracy. Further, in the case of the circular knitting machine, the metal filaments can be inserted only at regular intervals, and in the case of the flat knitting machine, there is a drawback that the knitting time is too long and the production efficiency is poor.

The present invention has been studied in order to solve the problems of the prior art, and the purpose thereof is to adjust the weaving density of the metal resistance wire by accurately producing desired dimensions while having appropriate elasticity. It is possible to provide a heat-generating knitted fabric that is capable of performing knitting and has high knitting efficiency, and to easily manufacture a warp-type heat-generating knitted fabric in which electrodes are easily provided on the knitted heat-generating knitted fabric.

[Means for solving problems]

The warp knitted knitted fabric of the present invention is a warp knitted knitted using a warp knitting machine, in which metal resistance filaments are knitted between appropriate courses of the ground yarn and knitted. The warp knitted fabric is characterized in that the ends of the metal resistance wire strips on the upper and lower end surfaces of the warp knitted fabric are connected by applying a conductive adhesive in a straight line.

The configuration of the present invention will be specifically described below.

The warp knitted fabric of the present invention may be any knitted fabric knitted using a warp knitting machine, and the knitting structure of the ground yarn is not limited.

As the material for the ground yarn, organic natural fibers such as cotton, wool and hemp, organic synthetic fibers such as polyamide, polyester and acrylic, or a mixed woven yarn thereof can be used.

The metal resistance wire in the present invention is a wire including a metal wire, and a single wire or a twisted wire of copper, copper alloy, stainless steel or the like,
Alternatively, a composite filament formed by twisting these metal wires and other organic fibers is preferable. The diameter of the metal wire is 30-80μ
Is preferable, and the surface thereof is preferably covered with polyurethane enamel or the like. The metal resistance wire is woven with an appropriate space between the ground yarn courses. The braiding interval can be appropriately selected depending on the application of the heating element.

The braided exothermic knitted fabric is coated with conductive adhesive in a straight line on both upper and lower edges to connect the ends of the metal resistance wire, and by passing an electric current through the electrodes, the metal resistance wire is heated to generate planar heat. Can be used as a body.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 are examples showing the exothermic knitting of the present invention,
Reference numeral 1 is a heat generating knitted fabric, 2 is a ground yarn, and 3 is a metal resistance wire.

In the knitting structure shown in FIG. 1, the metal resistance filaments 3 are knitted in a warp entwined with two rows of the ground yarns 2.

In the knitting structure shown in FIG. 2, the metal resistance filaments 3 are entwined with the five rows of the ground yarns 2 and are knitted in a zigzag shape.

In the knitting structure shown in FIG. 3, the metal resistance filaments 3 are entwined with the six rows of the ground yarns 2 and are knitted in an insert shape.

FIG. 4 is a schematic view of a planar heating element using the heating knitted fabric of the present invention, in which conductive adhesives are linearly applied to the upper and lower end surfaces of the heating knitted fabric to provide electrodes 4, and metal resistance wire strips are provided. The ends of 3 are connected in parallel, the lead wire 5 is drawn from the end of the electrode 4, and the connector 6 is connected to the power supply 7.

Such a sheet heating element is applied to a heat-retaining tool, a therapeutic tool, a carpet, a curtain, etc. to be worn on the human body.

〔The invention's effect〕

Since the heat-generating knitted fabric of the present invention is obtained by knitting metal resistance filaments in the structure of warp knitting, the structure is firm and it is possible to accurately obtain a desired dimension while having appropriate elasticity. There is an advantage that a large product can be manufactured without limitation in length, and products having different heating capabilities can be obtained with high production efficiency by changing the braid density of the metal resistance wire.

Further, the electrodes can be easily provided by applying the conductive adhesive in a straight line and connecting the ends of the metal resistance filaments on the upper and lower end surfaces of the knitted warp knitted fabric. It is possible to easily produce a knitting type heating knitted fabric.

[Brief description of drawings]

1 to 3 are enlarged views of a heating knitted fabric showing an embodiment of the present invention, and FIG. 4 is a schematic view of a planar heating element. 1 ... Exothermic knitting, 2 ... Ground yarn, 3 ... Metal resistance wire,
4 ... Electrode, 5 ... Lead wire, 6 ... Connector, 7 ...
Power supply.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Sato 1451 Machibata, Jizodo, Niigata-cho, Nishimizubara-gun, Niigata Prefecture Inside the Niigata factory, Nagata Seiki Co., Ltd. (56) Reference JP 60-111653 (JP, A) 58-55394 (JP, U) Actual opening 51-137738 (JP, U) Actual opening 61-38791 (JP, U) Special public Sho-34-9041 (JP, B1) Special public 46-31577 (JP , B1)

Claims (1)

[Claims] 1. In a warp knitted fabric knitted by using a warp knitting machine, a metal resistance wire is knitted between appropriate courses of ground yarn, and upper and lower end surfaces of the knitted warp knitted fabric A heat-generating knitted knitted fabric in which the ends of the metal resistance wire are coated with a conductive adhesive in a straight line and connected.