JPS6247185Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an electric carpet.

Conventional electric carpets of this type have two heating wires wired as closely as possible to ensure uniform heat generation.
The electrical carpet was constructed by bonding a surface material and a back material to both sides of a surface heating element sandwiched between two insulating layers, but this electric carpet could not be folded to protect the heating wires and required a large storage space. There was a drawback of doing so.

Therefore, a foldable electric carpet has been proposed to overcome the above-mentioned drawbacks. As shown in Fig. 1, this electric carpet consists of a heating wire 1a wired so that the number of points intersecting the planned bending line A is as few as possible is sandwiched between two insulating layers 1b and 1c, and attached to a surface heating element 1. , After punching a plurality of holes 1d in the vicinity of the planned bending line A and in an area where the heating wire 1a does not exist (an area that does not damage the heating wire 1a), a front material such as felt and a back material (not shown) are punched. ) are glued on both sides to make it easier to fold along the planned bending line A. Note that 2 is an electrode section.

However, such an electric carpet has a problem in that since there are few heating wires 1a near the planned bending line A of the surface heating element 1, the temperature in that area is low.

Therefore, the object of this invention is to provide an electric carpet that can protect the heating wires, can be folded for easy storage, and can evenly distribute the entire temperature.

A first embodiment of this invention is shown in FIG. That is, this electric carpet is connected to the heating wire 1 in FIG.
By providing high-density arrangement parts 1e on both sides of the punched hole 1d of a, the heat generation temperature of that part is made higher than other parts, and the temperature drop of the non-heat generation part near the planned bending line A is compensated for. The overall temperature distribution is uniform. In this case, the arrangement pattern of the heating wire 1a is
Since it is a surface heating element 1, it is easy to change, and the number of manufacturing steps and costs do not increase.

A second embodiment of this invention is shown in FIG. That is, this electric carpet is connected to the heating wire 1 in FIG.
By providing narrow portions 1f, which have a thinner line width and higher resistance than other portions, on both sides of the punched hole 1d of a, the heat generation temperature of those portions is made higher than other portions, and the planned bending line A is The temperature distribution is made uniform by compensating for the temperature drop in nearby non-heat generating parts. In this case as well, the number of manufacturing steps and cost do not increase as in the previous embodiment.

A third embodiment of this invention is shown in FIG. That is, this electric carpet is designed to further reduce the temperature difference by providing a heat conduction auxiliary line 1g in a portion other than the punched hole 1d near the planned bending line A of the electric carpet in FIG. In this case, the heat conduction auxiliary wire 1g can be made at the same time as the heating wire 1a, and the number of manufacturing steps and cost will not increase.

Note that the line width on both sides of the punched hole 1d on both sides of the heating wire 1a may be made thinner, and the wiring density may be increased.

As mentioned above, the electric carpet of this invention is
A surface material is provided on the main surface of the surface heating element, in which the heating wire is routed so that the number of points that intersect with the planned bending line is reduced, and punched holes are provided in areas where the heating wire does not exist in the vicinity of the planned bending line. In the electric carpet with adhesive bonded, the heat generation amount on both sides of the punched hole of the heat generation wire is made larger than other parts, so the heat generation wire can be protected and the heat generation wire can be folded for easy storage. Moreover, it has the effect of making the overall temperature distribution uniform.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts of the proposed electric carpet, Fig. 2 is a plan view of the main parts of the first embodiment of this invention, and Fig. 3 is a plan view of the main parts of the second embodiment of this invention. , FIG. 4 is a plan view of a main part of a third embodiment of this invention. 1... Surface heating element, 1a... Heating wire, 1b, 1c
... Insulating layer, 1d ... Punching hole, 1e ... High density arrangement part, 1f ... Narrow width part, 1g ... Heat conduction auxiliary line,
A... Planned bending line.

Claims (1)

[Claims for Utility Model Registration] (1) The heating wire is routed so that the number of places where it intersects with the planned bending line is reduced, and punched holes are provided in areas where the heating wire does not exist near the planned bending line. An electric carpet in which a surface material is bonded to the main surface of a surface heating element provided therein, characterized in that portions of the heating wire on both sides of the punched hole generate more heat than other portions. (2) The electric carpet according to claim 1, wherein a heat conduction auxiliary line is provided in a location other than the punched hole near the planned bending line.