JPH0155553B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an electric blanket using a nonwoven fabric or a raised fabric.

Conventionally, electric blankets are connected in advance by forming an insertion hole for the heating wire in the raised cloth, inserting a long heating wire cut into the insertion hole into the raising cloth, and connecting both ends of the longer heating wire. The method used was to cut the heating wire to an appropriate length and connect plugs to both ends of the heating wire, but after cutting the heating wire to a longer length in advance and inserting the heating wire through the raised fabric, connect the heating wire again. In order to re-cut both ends, the first cut must be cut again, resulting in wasted heating wire. In addition, if an electric blanket connected to a plug is found to have a disconnection in the heating wire during a continuity check, there will be a waste of labor for insertion and removal of the heating wire. Because the heat-generating wire is inserted inside the product, the heat-generating length of each product varies.

The present invention is an improvement on the above-mentioned electric blanket manufacturing method, and the drawings show an embodiment of the present invention. FIG. 1 is a plan view showing a heating wire and a plug. FIG. 2 is a cross-sectional plan view of a raw cloth provided with a binding part. Third
The figure is a plan cross-sectional view showing the connection made by running the heating wire along the connection part shown in FIG. 2. FIG. 4 is a plan sectional view showing the final heating wire arrangement. FIG. 5 is a plan sectional view showing the completed electric blanket.

From each figure, the manufacturing method of the electric blanket of the present invention is as follows: First, the heating wire 1 is cut to a predetermined length, the heating wire 1 is formed into a loop shape, and both ends of the heating wire 1 are connected to the plugs 2.
Fix it together with. Furthermore, after the heating wire 1 is checked for continuity, two sheets of raw cloth 3 are overlapped and joined, leaving at least the periphery of the raw cloth 3, to form a joint portion 4. In the connecting part 4, the heating wire 1 is arranged inside the raw cloth 3 along the four sides of the connecting part, and a loop of the heating wire 1 and a part of the loop of the heating wire 1 are arranged in a meandering manner. A part of the loop of the heating wire 1 is placed along a part of the joint part 4, and heat generation on three sides of the raw cloth other than the joint part 4 is achieved. Connect the parts along the line 1 loop and connect the 2nd
By forming the connecting portion 5, a part of the loop of the heating wire 1 is fixed. Then, the heat generating wire 1 is arranged along the previously provided connecting part 4, the connection is performed, the heat generating wire 1 is fixed in the raw cloth 3, and the final loop of the heat generating wire 1 is adjusted. Since there is an adjustment turn, the connection can be made without slack according to the length of the heating wire. And, as mentioned above, heating wire 1
After forming the loop along the connecting part 4 arranged in a meandering manner, the raw cloth 3 is connected and the heating wire 1 is fixed to complete the process. Further, the jig 6 shown in FIG. 4 is a jig 6 for arranging the heat generating wire 1 in a meandering manner, and the heat generating wire 1 is locked at the tips of two pins 7, and the connecting portion 4 is The raw cloth 3 is connected with the heating wire 1 placed between them, and the jig 6 is separated from the raw cloth 3.

As described above, according to the electric blanket manufacturing method of the present invention, the heating wire 1 of a predetermined length is connected to the plug 2 in advance to form a loop, so the length of the heating wire 1 is constant. , there is no need to cut the heating wire 1 fixed to the raw cloth 3 again, and the raw cloth 4
In addition, there is no need to check the continuity of the heating wire 1 fixed to the raw cloth 1 in order to check the continuity of the heating wire 1 before fixing the heating wire 1. Furthermore, since the peripheral length of the connecting part 4 provided in the two raw cloths 3 is formed longer than the length of the heating wire 1, the heating wire 1 is adjusted in the final loop and the raw cloth 3 It is arranged at a predetermined length inside. Further, the heating wire 1 may include a sensor wire integrated with the sensor wire, and the sensor wire and the heating wire 1 may also be used.
Separate units can also be easily installed.

Further, after the heating wires 1 are arranged on the four sides of the joint part in the raw cloth 3, the whole raw cloth 3 may be joined and fixed.

[Brief explanation of drawings]

The drawings show an embodiment of the method for manufacturing a nonwoven electric blanket of the present invention, and FIG. 1 is a plan view showing a heating wire and a plug. FIG. 2 shows the first joint,
Plane sectional view of raw cloth. FIG. 3 is a plan cross-sectional view of the cloth shown in FIG. 2 in which heating wires are arranged and fixed. FIG. 4 is a plan sectional view showing the final heating wire loop arranged along the connection part. FIG. 5 is a plan sectional view showing the completed electric blanket. In Figures 1 to 5, 1... exothermic line, 2...
...Plug, 3... Raw cloth, 4... First connection part.

Claims (1)

[Scope of Claims] 1. A joining part in which two pieces of raw cloth are overlapped and bound while leaving the periphery of at least two pieces of raw cloth, and both ends of the joined part are connected to plugs. heating wire,
A method of manufacturing an electric blanket, in which two pieces of raw cloth are placed side by side and a connection is made to fix the heating wires on two pieces of raw cloth. 2. The side length of the internally connected part of the raw cloth along which the heat generating wire is arranged is made longer than the length of the heat generating wire, and it is confirmed that the heat generating wire is arranged within the two sheets of raw cloth without sagging. A method for manufacturing an electric blanket according to claim 1, characterized in that: 3. The method of manufacturing an electric blanket according to claim 1, wherein the heating wire and the sensor wire are integrated or separated and are arranged along a joint in two pieces of raw cloth.