JPH11111063A - Flat pressed stranded hollow cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily provide a wide flat wire without increasing rolling pressure, and impart a bending characteristic in the width direction of the wire by arranging plural strands on the same circumference, and using a pressed stranded hollow wire having no central core wire as a rolled wire rod. SOLUTION: Plural strands 2 which are composed of a soft copper wire and have a prescribed wire diameter, are arranged on the same circumference, and are extruded through a die having a prescribed diameter, and a pressed stranded hollow wire is constituted. Since an outside diameter of the stranded wire can be made large by selecting the number of plural strands 2, a wide straight angle wire is obtained without increasing rolling pressure. Since sliding is generated between the respective strands 1 not like in the case where a round single wire is formed as a rolled wire, a bending characteristic in the width direction is obtained. The same wire as an outer layer strand 1 or a different wire such as silicon sponge may be incorporated into the hollow 3 of the pressed stranded wire, and the characteristic of the wire is improved thereby.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat wire used for electric wires and the like.

[0002]

2. Description of the Related Art Conventionally, a flat wire is a round wire (single wire).
Is generally used. When the round wire is rolled into a flat wire, the diameter of the flat wire and the width of the flat wire are said to be approximately 1.5 to 2 times wider.

[0003]

Since the diameter of a round wire is a factor that determines the width and thickness of a flat wire, in order to obtain a wide flat wire, the diameter of the wire is increased or the rolling pressure is reduced. There is a problem of increasing requirements.

A conventional flat wire made of a round wire as a rolled wire can obtain sufficient bending characteristics in the thickness direction (up and down), but cannot obtain it at all in the width direction (left and right). There is.

[0005] Therefore, the present invention provides a wide rectangular wire easily without using a hollow compacted stranded wire as a rolled wire without increasing the rolling pressure, and provides a rectangular wire having bending characteristics in the width direction (left and right). The purpose is to do so.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems. According to the first aspect of the present invention, the outer diameter of the hollow compression stranded wire can be increased by using a rolled wire rod. In addition, a wide flat wire can be provided without increasing the rolling pressure.

[0007] In addition, when the hollow compression twisted wire is made into a rolled wire, slippage occurs between the strands constituting the flat wire, and a conventional flat wire in which a round wire (single wire) is a rolled wire cannot be obtained at all. The present invention provides a flat wire having bending characteristics in the width direction (left and right).

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a flat wire using a hollow compression twisted wire of the present invention as a rolled wire will be described with reference to the embodiment shown in FIG.

Reference numeral 3 denotes a hollow portion of a hollow compression twisted flat wire in which the strands 1 are arranged on the same circumference, and the hollow compression twisted wire composed of a plurality of strands 2 is formed into a flat wire as a rolled wire.

[0010] The rolled wire of the present embodiment is composed of a soft copper wire having 20 outer layer wires and a wire diameter of 0.184 mm, and has a calculated twist outer diameter of 1.360 mm.

Passing through a compression die diameter of 1.174 mm,
Construct a hollow compression stranded wire. Therefore, the outer diameter of the hollow compression stranded wire is substantially equal. Incidentally, the compression ratio is 13.7%.

[0012] The hollow compression stranded wire is formed into a rectangular wire as a rolled wire rod as shown in Table 1 and shows a comparison between the rolling load of the hollow compression stranded wire and the single wire rolling load.

[0013]

[Table 1]

The rolling reduction in the present invention is obtained by the following equation (1).

[0015]

(Equation 1)

The single wire rolling load is obtained by the following equation (2).

[0017]

(Equation 2)

The rolling load of the hollow compression twisted flat wire can be obtained by the following equation (3).

[0019]

(Equation 3)

Next, the flat wire according to the second embodiment will be described with reference to FIG.

Reference numeral 4 denotes a silicon sponge in which the wires 1 are arranged on the same circumference and are incorporated in a hollow portion formed by a plurality of wires 2.

The rolled wire rod of the present embodiment is one in which a 1.1 mm silicon sponge 4 is incorporated in a hollow portion having 20 outer layer wires and a wire diameter of 0.184 mm.

The present invention is not limited to the above embodiment. That is, the wire diameter of each of the strands 2 is desirably selected according to the application, and the number of wires to be used is desirably selected according to the diameter of the stranded wire or the like.

Further, the wire rod to be incorporated into the hollow portion is not limited to the above embodiment.

[0025]

As described above, according to the first aspect of the present invention, a wide rectangular wire can be easily provided without increasing the rolling pressure, and the rectangular wire having a bending characteristic in the width direction (left and right). Lines can be provided.

According to the second aspect of the present invention, since various wires can be incorporated in the hollow portion, the characteristics of the flat wire can be improved.

[Brief description of the drawings]

FIG. 1 schematically shows a flat wire according to claim 1 manufactured by the present invention, wherein (a) is a side view, and (b) is a cross-sectional view taken along line XX in (a).

FIGS. 2A and 2B schematically show a flat wire according to claim 2 manufactured by the present invention, wherein FIG. 2A is a side view and FIG. 2B is a cross-sectional view taken along line YY in FIG.

FIGS. 3A and 3B schematically show a flat wire using a conventional round wire (single wire) as a rolled wire rod. FIG. 3A is a side view, and FIG.
FIG. 2 is a sectional view taken along line ZZ in FIG.

FIG. 4 is a plan view of a flat wire schematically showing a wire having bending characteristics in the width direction (left and right) of the flat wire according to claim 1 manufactured by the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 strand 2 multiple strands 3 hollow part 4 wire material (silicon sponge) incorporated in hollow part

Claims (2)

[Claims] 1. A flat wire having a hollow compression twisted wire as a rolled wire, wherein a plurality of strands are arranged on the same circumference and have no center line. 2. A flat wire having a hollow compression stranded wire rolled into a hollow compression stranded wire in which the same or different wire material as the outer layer element wire is incorporated into the hollow portion of the hollow compression stranded wire.