JPS63226550A - Electric space heater - Google Patents

Abstract

PURPOSE:To simplify the manufacturing process without any inconvenience in outer appearance of an electric heater by a method wherein a thermal molting film layer is applied to the rear surface of a surface member, an insulator member and an exposed portion of an overlapped surface member are made integral with a heating line and a temperature sensing line, bent back to a rear surface of the insulator member heated and press fitted. CONSTITUTION:A heat-weldable film 32 is adhered in advance to one surface of an upper cloth 31, a heating wire l=1 and a temperature detector wire 2 are adhered to the upper cloth 3. The upper cloth unit and the heat generating wire 1 are placed down with their upper surfaces being faced upwardly and an insulator material 4 is mounted at a desired location. In this case, the insulator material 4 has a smaller shape than the upper cover member 3, each of the substantial four sides is placed to have a marginal part of the bent-back part 33 of the upper cover member. If the bent-back part 33 is heated and press fitted while being bent back to the rear surface of the insulator 4, adhesive at the central part of the main body and end surface treatment at the side end portions can be performed simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to electric heaters for electric carpets and the like.

2. Description of the Related Art Regarding the structure of the main body of an electric carpet, especially regarding the treatment method for the ends, conventionally, the method of treating the ends has been disclosed in Japanese Utility Model Application Publication No. 57-132120.
A method of edge stitching using sewing thread was used, as shown in the above publication. Also, as another method,
As shown in Japanese Utility Model Application Publication No. 58-9619, the edges were treated with edge cloth.

Problems that the invention aims to solveHowever, in the case of the conventional method of edge stitching using thread,
(1) There will be a level difference in the entire circumference of the side end of the main body by the thickness of the thread. When this carpet is covered with a cover, this level difference may cause the edges of the cover to lift up or leave a level difference on the edge of the cover, causing further inconvenience. In addition, (2) there is a limit to how thin the 8-inch pitch can be, and the side edges cannot be completely covered by the thread alone, resulting in an incomplete appearance. Furthermore, (3) a sewing process was required as a separate process after the outer fabric unit and the heat insulating material were integrally bonded together. Naturally, this method has the drawback of requiring separate parts such as a lower thread and an upper thread.

On the other hand, the method of processing with a hem cloth also has the disadvantage that the above-mentioned step is created, and in addition to the separate part of the hem cloth, a separate process of sewing with a sewing machine or gluing the hem cloth is required.

As described above, all of the conventional methods have had problems in terms of product appearance, usability, productivity, and cost.

Means for Solving the Problems In order to solve the above-mentioned problems, the electric heater of the present invention has a heat-fusible film layer provided on the back side of the surface material in advance, which is used for heating wires and temperature detection. After integrating with the wire and forming a front fabric unit, this front fabric unit is stacked with a smaller-sized heat insulating material, and the part of the surface material that protrudes from the heat insulating material is folded over to the back side of the heat insulating material, and then these outer fabrics are The laminate of the unit and the heat insulating material is heat-pressed and integrated.

Function The surface material used in the present invention is one on which a heat-fusible film layer is previously formed over the entire back surface,
By bonding the heating wires and temperature detection wires and the heat insulating material, and also by folding the ends and bonding to the back side of the heat insulating material, the end surface of the carpet body is
Processing is also performed at the same time.

EXAMPLE Hereinafter, an electric carpet that is an example of the present invention will be described with reference to the drawings.

FIG. 3 shows the surface material used in this embodiment, which has a structure in which a heat-fusible film 32 is pasted on one side of a surface cloth 31 in advance. The outer fabric 31 is generally made of polyester fiber in consideration of heat resistance and abrasion resistance, and the heat r1A Jta' film layer 32
Resins such as polyolefin, polyurethane, and polyurethane are often used. Above all, the heating wire and temperature detection wire are coated with soft vinyl chloride,
Most suitable are Boriesde/I/ series resins that adhere and also adhere to fibers.

Fig. 4 is a cross-sectional diagram of the surface material 3 with the heating wire 1 and the temperature detection wire 2 bonded to it. After wiring the heat generation wire and the temperature detection wire to predetermined positions, the surface material 3 is placed with the heat-fusible film layer 32 side down, and when pressure is applied from above with a heating plate for a certain period of time, the pA line is emitted. 1 and temperature detection line 2
can be integrated with the surface material 3. At this time, the heat-sealing film J of the surface material 3:! Depending on the material of j32, for example, if it is made of polyethylene resin and cannot be bonded by hot melting to vinyl chloride resin, add polyethylene resin to the outer periphery of the vinyl chloride outer sheath on the outer sheath of the heating wire and temperature detection wire described above. By using a resin-coated material, it can be integrated with the surface material 3. When this integrated product is then removed from the wiring corner board, a surface fabric unit as shown in FIG. 4 is formed.

Next, a heat insulating material 4 such as felt is constructed, but in the present invention, the feature of this insulating material 4 is that its shape is smaller than that of the above-mentioned outer fabric unit, and the side edges It is also an essential element for the processing of parts.

Regarding the processing method for constructing the heat insulating material 4, Figs.
This will be explained using figures. Place the aforementioned outer fabric unit below,
However, at this time, the heating wire 1 is placed so as to face the upper surface, and the heat insulating material 4 is placed on top of it in a predetermined position. here,
The heat insulating material 4 is a surface material 3j:ll) having a small shape, and each side of the substantially rectangular shape is hazy so that the margin of the surface material folded portion 33 can be taken out. In FIG. 3, the notch at the corner of the front surface +Ai3, ie, the corner cut portion 34, is for eliminating overlap when folding back the heat insulating material 4 to the back surface.

After placing the heat insulating material 4, it is heat-pressed and bonded to the surface material 3 (outer fabric unit) using, for example, a heat press method.
If the folded portion a3 of the surface material is heated and pressed while being folded back to the back side of the cross-sectional material 4 as shown in Fig. 1, adhesion at the center of the main body and end face processing at the side edges can be done at the same time. It will be possible. Here, as a method to hold the folded part in the folded state, there are methods such as using a jig to hold the folded part and putting the whole jig into a heat press, or temporarily gluing the folded part. There is. In particular, the entire surface of the surface material 3 is covered with a heat-fusible film?
:bi 32 is formed, so temporary adhesion can be easily done by heating and pressing the folded part with an iron or the like.

In addition, in the example of rjiJ, t, the method of gluing the center part of the main body and the folded part was described at the same time. It is also possible to do this.

In this way, the main body of the electric carpet is made up of the heating wire 1, the temperature detection wire 2, the surface material 3, and the heat insulating material 4, and all that is left is to install the controller section. It will be completed as a 1 yen car head.

Effects of the invention Since no decorative threads or border fabrics are used in the line processing of the main body, the electric carpet has fewer steps at the edges, and even when used with an overcarpet placed on top of it, there is no risk of it lifting up at the edges. Moreover, if there is a step mark, it can be used without any problems in appearance.

In addition to adhering the surface material and insulation material, it is also possible to perform edge treatment at the same time.
Since the end face can be formed from the outer fabric, the components and processing steps can be simplified.

Since a heat-adhesive film layer is formed on the back side of the surface material, there is no problem in the process of bonding it to a heating element or temperature detection wire, such as bonding it to a hot plate. In addition, even when mounting with insulation 4, positioning etc. is easy because it is a two-piece structure with outer fabric unit 1- ((
I can do it.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an electric carpet that is an embodiment of the present invention, Fig. 2 is an exploded perspective view of the same electric carpet, and Fig. 3 is a surface view of the electric carpet according to an embodiment of the present invention. 4 configuration, FIG. 4 is a sectional view of essential parts of the electric carpet, FIG. 5 is a perspective view of a conventional electric car carrier, FIG. 6 is a sectional view of the electric carpet, and FIG. 7 is a sectional view of another conventional electric carpet. It is a cross-sectional configuration diagram of Ki-Pet. 1...Output #A line, 2...Temperature detection line,
3... Surface material, 31... Outer fabric, 32.
... Heat-fusible film layer, 33 ... Surface material folded part, 4 ... Heat insulating material, 5 ...
・Edge seam part, 6...Edge fabric. Name of agent: Patent attorney Toshio Nakao and 1 other person 3゛-Surface material 34...Surface material corner cut portion 3-Surface candy material 31-" Table 1,32-UK visual film No. 3 Figure I--Ki p-uncle

Claims (1)

[Claims] Consisting of a surface fabric unit formed by integrally bonding a surface material with a heat-fusible film layer on the back side, a heat generating wire, and a temperature detection wire in advance, and a heat insulating material smaller in shape than the surface fabric unit. The electric heater is formed by folding a side end of the outer fabric unit to the back side of the heat insulating material and integrally bonding the outer fabric unit and the heat insulating material.