JPS6032936B2 - Manufacturing method of flat insulated wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a rectangular insulated wire, particularly a wide rectangular (or tape) insulated wire with good insulation properties at the edge portion.

Conventionally, there is a method for manufacturing this type of wide rectangular (or tape) insulated wire, as shown in FIG. 1, in which an insulating paint 2' is applied and baked on a wide rectangular (or tape) conductor 1'.

However, this method has the disadvantage that the insulation film on the edge portion of the finished wire cannot be as uniform as that on the flat portion. (See Figure 1 C) As an improvement to this method, as shown in Figure 2, both ends in the width direction of the flat insulated wire 3' obtained in the above manner (shown at the opening in Figure 1) are cut off (see Figure 2). After that, both ends of the conductor are etched to elute both ends of the conductor (Fig. A), and then the eluted parts are coated or filled with an insulating material 4' to compensate (Fig. C). However, this method involves high costs such as cutting, etching, and varnishing, and etching may cause deterioration of the insulating film.

The present invention has been made to eliminate the above-mentioned drawbacks.

That is, the method for manufacturing a rectangular insulated wire of the present invention involves adding an insulator or an insulated conductor to one or both ends of the rectangular conductor in the thickness direction, and creating a pool in which the insulating paint accumulates at the edge of the rectangular conductor. This method is characterized by applying and brazing an insulating paint. The invention will now be explained in detail with reference to the illustrative drawings.

In Fig. 3, 1 is a rectangular conductor, 5, 6, and 7 are striated bodies attached to the thickness sides 10 and 10' of both ends in the width direction of the rectangular conductor, and 5 and 6 are movable corners and circles. The insulating material 7 is an insulated wire, such as a wire in which a conductor is extruded and coated with rubber or plastic, or an insulated wire in which an insulating paint is coated and baked on the conductor. Now, as shown in FIG. 4, the linear bodies 5, 6, or 7 are attached to the thickness sides 10, 10' of both ends in the width direction of the rectangular conductor 1, and in this state, the insulating paint 2 is applied. By applying this coating, 1 and 5, 6 or 7 are bonded and integrated. The coating may be applied, for example, by felting, dipping, or the like. FIG. 5 is an enlarged view of the ends of various rectangular insulated wires produced in this way, and of course the same reference numerals as in FIG. 3 represent the same parts.

As shown in the figure, the edge portion does not need to have a stop, and the edge portion does not necessarily have to be a perfectly round corner. In the above case, for example, as shown in FIG. 5C, a pool 8 is formed between the edge of the flat wire 1 and the filament 6 to be attached, and the insulating paint accumulates therein.

Therefore, the edge portion can be insulated. According to experiments in the present invention, as shown in FIG. 5', AZB is preferable.

Note that A is the diameter of the filament to be attached, and B is the thickness of the rectangular conductor. Note that if A is too small compared to B, there is no effect. According to the method of the present invention as described above, a wide conductor or tape can be used as a conductor.

Therefore, there is an advantage that the thickness/width ratio can be set freely.

[Brief explanation of the drawing]

Figure 1 shows an explanatory diagram of the conventional method of manufacturing a rectangular insulated wire by applying insulating paint to a rectangular conductor and applying phosphor. Figure C is an enlarged view of the edge of the drawing opening. Figure 2 shows an explanatory diagram of a conventional method for manufacturing rectangular insulated wires, which is an improvement on the method shown in Figure 1. is a cross-sectional view when both ends of Figure A are cut and etched,
Figure C is a cross-sectional view when the etched portion of the opening is supplemented with an insulator. Figure 3 shows a cross section of the material used in the present invention, where Figure A is a rectangular conductor, Figure opening is a square corner insulator,
Figure C shows a circular portable insulator, and Figure 2 shows an insulated wire. Fourth
Figures 5 and 5 are diagrams for explaining the method of the present invention, and Figures A, C, and C in Figure 4 are cross-sectional views of a rectangular conductor in which a filament is attached to both ends. Figures A to H in FIG. 5 are cross-sectional views when an insulating paint is applied to the structure shown in FIG. 4. 1...Flat conductor, 2...
Insulating paint, 5...Flexible insulating material on corners, 6...
... Circular movable insulator, 7 ... Insulated wire, 8
... Pool, 10, 10' ... Thickness side of both widthwise ends of flat conductor. O figure O figure O 2 figure Juice 3 figure Juice 4 figure O figure 5

Claims (1)

[Claims] 1. The method is characterized in that an insulator or an insulated conductor is attached to one or both widthwise ends of a rectangular conductor, and a pool in which the insulating paint accumulates is created at the edge of the rectangular conductor, and the insulating paint is applied and baked. Method for manufacturing flat insulated wire.