JPH0526712Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is mainly used in surface heating appliances such as electric blankets and electric carpets, which are required to insulate heat generating materials according to the Electrical Appliance and Materials Control Law. In particular, the present invention relates to a surface heating element having characteristics as a wiring support means when a wire is used as a heat generating material.

[Conventional technology and its problems]

Conventionally, surface heating elements for electrical appliances of this type have ranged from purely manual methods in which a base fabric is immersed in carbon liquid to plastic thread itself made by pre-mixing conductive substances such as conductive wire or carbon. Weaving the base fabric with warp or weft,
A number of methods have been used, including ones that can be machine-produced to some extent, such as printing appropriate metal foil directly onto the base fabric surface, but all of these methods require a great deal of effort to insulate the conductor. It was hot.

On the other hand, when using a heat-generating cord made by coating the heater wire with an insulating material in advance, the post-treatment of the conductor as described above can be avoided.However, unlike conductive wire or carbon thread, the cord is not twisted. Mechanical production using looms, etc., was considered impossible due to the large amount of heat generated and the need for wiring at relatively coarse intervals, so manual production had to be resorted to, and the production efficiency of surface heating elements decreased. This resulted in a significant drop in production costs, leading to increased costs.

[Means for solving problems]

In view of these circumstances, the present invention has been developed by arranging multiple sets of weft and warp threads, which are tightened by single chainstitching with two warp threads on both sides of a single weft thread that runs in close contact with each other in a zigzag pattern with a constant width. A method was used in which a single continuous heat-generating cord was arranged in a crosswise pattern orthogonal to the warp threads, and single chainstitched together with the weft threads at appropriate intervals.

[Effect]

According to the present invention, since the heat-generating cord can be supplied from one side of the warp, twisting does not occur in the heat-generating cord being wired, and moreover, the heat-generating cord is tightened together with the weft by each of the warps, and at the same time Since the heat-generating cord is held down by the weft running diagonally, it exhibits a special effect in that the wiring does not slip or move at all.

〔Example〕

Hereinafter, the structure will be described in more detail according to an example. In the figure, 1 is a set of two threads running at a constant interval so that each thread forms a single chainstitch loop as described below. The warp threads 2 and 2 are thick weft threads made of, for example, nylon fibers, which are tightened by the two warp threads 1 and run in close contact with each other in a zigzag pattern. That is, the warp threads 1 and 1 on both sides are tightly knitted in a lattice while tightening the weft thread 2 using a single chain stitch method.

Further, reference numeral 3 is a heat-generating cord made of a heater wire coated with an insulating material, which is woven perpendicularly to each of the warp threads 1 every certain number of the weft threads 2 and reversed horizontally so that each of the warp threads 1 At the intersection with the weft yarn 2, it is tightened using the single chainstitch method in the same manner as the weft yarn 2 described above.

To further explain the knitted fabric structure using the warp single chain stitch method, first, a looper (not shown) is used.
After forming an appropriate loop 1a on the warp thread 1 by using the above-mentioned looper, the warp thread is wound around the weft thread 2 which runs across the loop 1a of the warp thread, and a new loop 1b formed by the above-mentioned looper is then The weft yarn 2 is tightened by passing through the loop.

After that, the weft thread 2, which reverses and advances, intersects the new loop 1b, and the next loop 1c is formed in the warp system, so that the weft thread 2 becomes the warp thread in the same way as described above. 1, and the weft threads are weaved in the same way in a continuous zigzag manner between the warp threads on both sides.

At the same time, each time a certain number of weft threads 2 are entangled with the warp threads 1 of each row, a heat-generating cord 3 is generated.
is horizontally swung perpendicularly to each warp thread, and the intersection of the cord 3 and the warp thread 1 is single chain stitched in the same manner as described above to fix the exothermic cord 3, and then the weft thread 2 is weaved in. The weft threads 2 run obliquely on the cord, and a latsiel knit is sequentially obtained in a state where the cord is held down. (See Figure 2).

The surface heating element thus obtained can of course be used as a heating element for electric blankets, carpets, etc., and can also be widely applied, for example, as a wall heating material.

In addition, by incorporating separate heat-sensitive cords (not shown) in a similar manner to every fixed number of heat-generating cords 3, a thermostat mechanism can be attached to maintain the heat generation temperature of the heat-generating cords 3 at a constant level. It is.

In addition, the spacing between the warp threads of each set in the above embodiments can be freely set, and the weft threads are not limited to the blind-like one as in the above example, but may be woven over the entire surface of the warp threads.

[Effect of idea]

According to the structure of the thermal element of the present invention described above, wiring can be carried out without twisting the heat-generating cord, and the weft and heat-generating cord are strongly tightened to the warp by single chainstitching, so that they can be easily connected to each other. Slip and movement are reliably prevented. Therefore, in the present invention, the wiring spacing of the above cords can be arbitrarily selected.
Furthermore, the weft threads woven closely in a zigzag pattern act as spacers and can be kept constant at all times, and at the same time, the weft threads running diagonally across the cord have the effect of pressing down on the cord from above. ,
This allows the entire element body to be constructed more planarly and more strongly.

In addition, since the surface heating element of the present invention can be continuously obtained as a long piece through mechanical production, production efficiency can be significantly improved, and costs can be significantly reduced, making it economically superior. It can be of practical use.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the thermal element according to the present invention, with the intermediate portion omitted, and FIG. 2 is a partially enlarged cross-sectional view showing the weaving structure of warp and weft yarns. In the figure, 1...warp, 2...weft, 3...cord.

Claims (1)

[Scope of utility model registration request] A large number of sets of weft threads 2 and warp threads 1, which are tightened by single chainstitching with two sets of warp threads 1, are arranged in parallel on both sides of a single weft thread 2 that runs closely in a zigzag shape with a constant width, and one continuous thread is sewn in parallel. The structure of the surface heating element body is characterized in that heat-generating cords 3 are arranged in a transverse manner perpendicular to the warp threads 1, and single chainstitched together with the weft threads 2 at appropriate intervals.