JPH10284226A - Plane-like heating implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plane-like heating implement in which the entering of toes under the outer periphery portion of an electric carpet or the like to cause stumbling, and the entering of small toy or the like to cause the breakage of its surface material by treading thereon through a foot are not allowed. SOLUTION: A main body comprises a heating body 2, a soft foaming body 16 and surface materials 15, 15a. The outer periphery portion 6a of the main body is formed thinner than the other portion, and simultaneously, levee shape portions 18 are formed from the main body against the outer periphery portion 6 in approximately comb teeth-like. Therefore, like a relationship between the ribs and the paper portion of a fan, the outer periphery portion 16a among the levee shape portions 18 are kept in a strained state by the shape maintaining property of the levee shape portions 18, and the outer periphery portion is not allowed to be turned over.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planar heating device such as an electric carpet, and more particularly to a structure of an outer peripheral portion.

[0002]

2. Description of the Related Art Conventionally, this type of planar warming device generally has a heating element 2 such as a cord-shaped tubing heater uniformly distributed on a fibrous heat insulating material 1 such as felt as shown in FIG. The heat-sealing sheet 3 and a surface cloth 4 such as a non-woven fabric are disposed thereon, and the heat-insulating material 1 and the surface cloth 4 are pressed together while the heat-sealing sheet 3 is melted by a hot press to fix the heating element 2. The main body 5 is constituted. In addition, the outer peripheral portion 6 of the main body 5 where the heating element 2 is not actually provided is not bonded by the heat-sealing sheet 3, and the outer peripheral portion 6 of the main body 5 is replaced by the heat insulating material 1 and the outer cloth 4. The entire circumference is overlocked by the thread 7 so that the peeling does not occur.

However, when the outer peripheral portion 6 of the main body 5 is trampled during use, the yarn 7 is cut or frayed to expose the end face, and the heat insulating material 1 and the outer cloth 4 are peeled from the portion toward the center. May occur.

Therefore, an electric heating board as disclosed in Japanese Patent Application Laid-Open No. 4-190582 has been considered. That is, as shown in FIG. 3, a heat insulating material 9 provided with a heater wire 8 and a plate material 10 are thermally bonded via a heat welding sheet 11, and the outside thereof is covered with a resin coating sheet 12. The heat-sealing sheet 11 and the cover sheet 12 are thermally bonded to each other, and the heat insulating material 9 and the resin-coated sheet 12 are further bonded to each other with a double-sided adhesive tape 13. In addition, the periphery 14
Indicates that the resin-coated sheet 12 is thermally welded. This configuration,
Although the plate 10 is used inside as an electric heating board, the plate 10 can be used as a conventional planar heating device except for the plate 10.

[0005]

However, in this configuration, since the peripheral edge 14 is made of the resin-coated sheet 12, it is easy to turn up softly. Therefore, the periphery 14
There is a problem that the toes may fall under the toe and trip, or a book or a small toy of a child may enter, and the resin-coated sheet 12 may be broken by accidentally stepping on the toes.

[0006]

In order to solve the above-mentioned problems, the present invention comprises a heating element, a soft foam, and a surface material to form a main body. The outer circumference of the main body is made thinner than other parts, and the outer circumference is made thinner. In this configuration, a crosspiece is provided on the outer peripheral portion so as not to turn over.

According to the above invention, the crosspiece provided on the outer peripheral portion from the main body serves as a core like the bone of a fan to maintain the shape of the outer peripheral portion. It is no longer possible for a toe to fall into the stomach, or a book or a small toy for a child to enter, and the surface material to be accidentally stepped on by a foot to break.

[0008]

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a heating element, a soft foam covering the heating element, and surface materials disposed on both outer surfaces of the soft foam. The main body is composed of a soft foam and the surface material, and the outer peripheral portion of the main body is made thinner than other portions, and a bar is provided on the outer peripheral portion so that the outer peripheral portion does not turn over.

Since the crosspiece provided on the outer peripheral portion from the main body serves as a core like the bone of a fan, to maintain the shape of the outer peripheral portion,
The outer peripheral portion is not turned up, so that the toe does not fall under the outer peripheral portion to trip or a book or a small toy of a child to enter, and the surface material is not broken by accidentally stepping on the foot.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a perspective sectional view of a planar heater according to Embodiment 1 of the present invention. The heating element 2 is disposed and fixed to the resin film side of a surface material 15 in which a resin film is adhered to one surface of a needle punch felt having a cotton grit of 250 g / m ² . Then, a soft foaming resin 16 such as polyurethane is injected between the sponge of 50 g / m ² and a surface material 15 a in which a resin film is adhered to one side of the spun bond, and foamed to form a sheet-like warming device 17.
Is formed. The outer peripheral portion 6a of the planar heater 17 has the surface materials 15 and 15a adhered to each other. The method of adhesion is a method of bonding with a thin film of the soft foamed resin 16, a method of welding by ultrasonic waves or high frequency, or a method of hot pressing. Welding method.

A ridge-shaped portion 18 is formed on the outer peripheral portion 6a in a comb shape at a predetermined interval. This ridge shape part 1
8 is a soft foamed resin 1 from the main body 19 of the planar heater 17.
6 are filled.

Next, the operation will be described. The outer peripheral portion 6a of the planar heating device 17 is soft and easily deformed because only the surface members 15 and 15a are bonded to each other, but the ridge-shaped portion 18 has soft foam inside. Since the resin 16 is filled,
It is relatively resistant to deformation and can maintain its shape.

Accordingly, the outer peripheral portion 6a between the ridge-shaped portions 18 is in a taut state due to the shape maintenance of the ridge-shaped portion 18, similarly to the relationship between the bone of the fan and the paper portion.
a does not turn up.

Therefore, it is possible to prevent the toes from getting stuck under the outer peripheral portion and tripping, and a book or a small toy of a child to enter, and the surface material from being accidentally stepped on by a foot can be prevented from being broken.

In the above description, a configuration in which a ridge-shaped portion is provided in a substantially comb-like shape on the outer peripheral portion to prevent the outer peripheral portion of the main body of the planar heating device from being turned up is described, but is limited to this configuration. Instead, for example, the ridge portion may be formed in a radial shape, a C-shape, a square shape, or a wavy shape. That is, it is only necessary to provide a crosspiece for preventing turning up.

[0016]

As described above, according to the present invention, there is provided a heating element, a soft foam covering the heating element, and a surface material disposed on both outer surfaces of the soft foam. A heating element, the soft foam, and the surface material constitute a main body, and an outer peripheral portion of the main body is made thinner than other portions, and a ridge-shaped portion is formed in a substantially comb-like shape with respect to the outer peripheral portion of the main body. As the relationship between the bone of the fan and the paper part, the outer periphery between the ridge-shaped portions becomes taut due to the shape maintenance of the ridge-shaped portion, and the outer periphery does not turn up, and This has the effect that the toes do not trip and the book or small toys of children enter, and the surface material is not accidentally stepped on with a foot.

Further, the ridge-shaped portion serves as an escape route for the residual air in the planar heater which is extruded during the foam molding of the soft foam, thereby facilitating the molding of the soft foam and providing a soft foam having a uniform hardness. It also has the effect that it can be formed.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional perspective view of a planar heating device according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the configuration of a conventional planar heating device.

FIG. 3 is a sectional view showing the configuration of another conventional planar heating device.

[Explanation of symbols]

 2 Heating element 6a Outer peripheral part 15, 15a Surface material 16 Soft foam resin (soft foam) 17 Planar heating device 18 Ridge-shaped part (bar) 19 Main part

Continuing from the front page (72) Inventor Akimasa Onishi 1006 Kazuma Kadoma, Osaka Pref. Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A heating element, comprising: a soft foam covering the heating element; and surface materials disposed on both outer surfaces of the soft foam, wherein the heating element and the soft foam are A planar heating device comprising a main body formed of the surface material, and a bar formed on the outer peripheral portion so that the outer peripheral portion of the main body is thinner than other portions and the outer peripheral portion is not turned up.