JP7022469B1 - Stranded conductor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stranded conductor capable of producing a stranded conductor having a cross-sectional shape close to a perfect circle without compression or with a low compressibility. SOLUTION: The inner layer 2 composed of one center line 11 arranged in a central portion is provided, and a first outer layer 4 composed of a plurality of first outer layer lines 12 is arranged outside the inner layer 2. Then, on the outside of the first outer layer 4, there are the same number of outer thin diameter wires 13 as the number of the first outer layer wires 12, and the same number of outer diameter wires as the number of the first outer layer wires 12, and the outer diameter is thicker than the outer thin diameter wires 13. The outermost layer 5 composed of the thick diameter wire 14 is arranged, the first outer layer wire 12 is arranged separated in the circumferential direction, and the outer diameter is outside between the first outer layer wires 12 and 12 adjacent to each other in the circumferential direction. The wire 14 was arranged, and one outer diameter wire 15 was arranged between the outer thick diameter wires 14 and 14 adjacent to each other in the circumferential direction. [Selection diagram] Fig. 1

Description

The present invention relates to stranded conductors.

Conventionally, each of the strands constituting the stranded conductor used for electric wires and the like is generally a round wire having a circular cross section and the same diameter. A copper wire is mainly used as the wire, and a copper wire plated with tin, nickel, silver, aluminum, or various alloys is used.

For example, a stranded conductor having a concentric twisted structure and composed of 19 strands generally has one strand 102 at the center of the stranded conductor 101 as a core, as shown in FIG. , 6 strands 103 surround it to form an inner layer, and 12 strands 104 surround the outer circumference to form an outer layer, which are twisted in the same direction. ing.

Since the strands 102, 103, and 104 are all circular in cross section and have the same diameter, when the strands 102, 103, and 104 are arranged in a standard core wire arrangement to form the stranded conductor 101, the outer peripheral shape thereof is formed. As shown in FIG. 15, has a shape similar to a hexagonal shape, and does not have a shape similar to a round shape. Hereinafter, this will be referred to as the prior art 1.

Generally, as shown in FIG. 15, the stranded conductor 101 is used as an electric wire (covered wire) or the like 107 with an insulating material 106 coated on the outer peripheral portion thereof. It is important to reduce the amount of the insulating material 106 from the viewpoint of effective utilization of resources, and therefore, it is desired that the cross-sectional shape of the stranded conductor is a perfect circle.

However, when the stranded conductor is composed of 19 strands having the same diameter and a concentric twist arrangement, for example, as shown in FIG. 15, the outer shape of the cross-sectional shape of the stranded conductor 101 becomes a hexagonal shape . The thickness of the insulating material 106 is thin in the vicinity of the apex portion and becomes thicker from the apex portion to the side portion, and the thickness of the insulating material 106 becomes non-uniform. Further, in order to prevent poor pressure resistance, the thickness of the insulating material 106 at the apex is used as a reference, and the thickness of the insulating material 106 at the side is excessive and wasteful. From this point as well, the cross-sectional shape of the stranded conductor is true. It is desired to be a circle _.

Further, since the cross-sectional shape of the stranded conductor 101 is a hexagonal shape, there is a problem that the stranded conductor 101 may be damaged when the insulating material 106 is stripped in the terminal processing of the coated wire or the like.

Similarly, it is desired that the cross-sectional shape of the stranded conductor is a perfect circle in the collective stranded wire other than the concentric stranded arrangement.

As a method of making the cross-sectional shape of the stranded conductor a perfect circle, for example, as described in Patent Document 1, a wire 202 having a circular cross section and all having the same diameter is passed through a compression die while being twisted in one direction. As shown in FIG. 16, a method has been proposed in which the cross-sectional shape of the stranded conductor 201 is a substantially perfect circle. Hereinafter, this will be referred to as the prior art 2.

Japanese Unexamined Patent Publication No. 11-25758

In the above-mentioned twisted wire conductor 201 of the prior art 2, when the wire 202 is passed through a compression die, the outer layer wire is compressed and deformed, so that the physical properties such as elongation property, flexibility, and flexibility are impaired. There is a problem.

Further, since the stranded conductor 201 of the prior art 2 needs to be twisted in one direction and passed through a compression die, an extra compression die is required as compared with the stranded conductor 101 of the prior art 1, and this compression is required. Since the die is worn and damaged during the manufacture of the stranded conductor 201, there is a problem that periodic replacement is required and the cost is high.

Further, in order to make the stranded wire after compression into a substantially perfect circle, it is necessary to keep the rotation speed of the manufacturing machine (twisting machine) below a certain value and stabilize the rotation speed. There is also a problem that the production efficiency is worse than that of the stranded conductor 101.

Further, in the stranded conductors 101 and 201 of the prior art, since all the adjacent strands are arranged so as to be in contact with each other, the density of the strand arrangement is high, there is no gap between the adjacent strands, and the conductors are stretched. There is a problem that physical characteristics such as characteristics, flexibility, and flexibility are impaired.

Therefore, the cross-sectional shape of the stranded conductor can be made closer to a perfect circular shape without compression or by compressing the strands at a compression rate lower than that of the conventional technique 2. Is intended to provide.

In order to solve the above-mentioned problems, the invention according to claim 1 comprises an inner layer composed of one center line arranged in the central portion, or one center line arranged in the central portion, and the same. It has an inner layer composed of a first inner layer formed by arranging a plurality of first inner layer lines in the circumferential direction on the outside of the center line.
A first outer layer composed of a plurality of first outer layer lines is arranged on the outside of the inner layer.
The outside of the first outer layer is composed of an outer diameter wire having the same number of lines as the first outer layer wire and an outer diameter wire having the same number as the number of the first outer layer wires and thicker than the outer thin diameter wire. Arrange the outermost layer
The first outer layer line is arranged so as to be separated in the circumferential direction.
One outer thick diameter wire is arranged outside between the first outer layer wires adjacent to each other in the circumferential direction, and the outer thick diameter wire is arranged separated in the circumferential direction.
It is characterized in that one outer thin diameter wire is arranged between adjacent outer thick diameter wires in the circumferential direction so as to be in contact with the first outer layer wire .

The invention according to claim 2 is an inner layer composed of one center line arranged in the central portion, or one center line arranged in the central portion, and a plurality of third lines outside the center line. 1 It has an inner layer formed by arranging inner layer lines in the circumferential direction.
A first outer layer composed of a plurality of first outer layer lines is arranged on the outside of the inner layer.
A second outer layer composed of the same number of second outer layer lines as the number of the first outer layer lines is arranged outside the first outer layer.
The outside of the second outer layer is composed of an outer thin diameter wire having the same number of lines as the first outer layer wire and an outer diameter wire having the same number as the number of the first outer layer wires and thicker than the outer thin diameter wire. Arrange the outermost layer
The first outer layer line is arranged so as to be separated in the circumferential direction.
The second outer layer line is arranged outside between the first outer layer lines adjacent to each other in the circumferential direction.
The outer thick diameter wire is arranged outside between the second outer layer wires adjacent to each other in the circumferential direction, and one outer thin diameter wire is arranged between the outer thick diameter wires adjacent to each other in the circumferential direction. It is a thing.

The invention according to claim 3 is the invention according to claim 1 or 2, wherein the distance from the center of the stranded conductor to the outer edge end of the outer fine diameter wire constituting the outermost layer is used. It is characterized in that the distance from the center of the stranded conductor to the outer edge of the outer thick wire constituting the outermost layer is the same.

The invention according to claim 4 is characterized in that, in the invention according to any one of claims 1 to 3, the strands constituting the outermost layer are compressed and deformed from the outside.

According to the invention according to claim 1 of the present application, an inner layer composed of one center line arranged in the central portion, or one center line arranged in the central portion, and a plurality of lines outside the center line. The first outer layer composed of a plurality of first outer layer lines is arranged outside the inner layer, and the first outer layer composed of a plurality of first outer layer lines is arranged outside the first outer layer. An outermost layer composed of an outer diameter wire having the same number of lines as the first outer layer wire and an outer diameter wire having the same number as the number of the first outer layer wires and thicker than the outer thin diameter wire is arranged and peripherally arranged. One outer thick diameter wire is arranged outside between the first outer layer wires adjacent to each other in the direction, the outer thick diameter wires are arranged apart from each other in the circumferential direction, and 1 is arranged between the outer thick diameter wires adjacent to each other in the circumferential direction. By arranging the outer diameter wire of the book so as to be in contact with the first outer layer wire, the cross-sectional shape of the stranded wire conductor becomes a substantially perfect circular shape, and the diameter of the stranded wire conductor is reduced, the weight is reduced, and the flexibility is increased. It can be improved.

Further, unlike the twisted wire conductor 201 of the prior art 2, the twisted wire conductor of the present invention can have a substantially perfect circular shape in the outer shape of the twisted wire conductor without passing the wire through a compression die. It is possible to maintain the physical characteristics of the wire without impairing the physical characteristics such as elongation characteristics, flexibility, and flexibility, and it is possible to obtain highly reliable quality. It can be effectively used in fields and the like.

Further, according to the invention according to claim 2, the inner layer composed of one center line arranged in the central portion, or one center line arranged in the central portion and the outside of the center line. It has an inner layer composed of a plurality of first inner layer lines arranged in the circumferential direction, and a first outer layer composed of a plurality of first outer layer lines is arranged outside the inner layer to the outside of the first outer layer. A second outer layer composed of the same number of second outer layer lines as the number of the first outer layer lines is arranged, and an outer diameter wire having the same number as the number of the first outer layer lines is arranged outside the second outer layer. By arranging the outermost layer having the same number of lines as the first outer layer wire and composed of the outer thicker diameter wire thicker than the outer thin diameter wire, the same operation and effect as the invention according to claim 1 can be obtained. ..

The cross-sectional view of the stranded conductor which concerns on Example 1 of this invention. The cross-sectional view which shows an example of the stranded conductor which concerns on Example 3 of this invention. The cross-sectional view which shows the other example of the stranded conductor which concerns on Example 3 of this invention. The cross-sectional view which shows the other example of the stranded conductor which concerns on Example 3 of this invention. The cross-sectional view which shows an example of the stranded conductor which concerns on Example 4 of this invention. The cross-sectional view which shows the other example of the stranded conductor which concerns on Example 4 of this invention. The cross-sectional view which shows the other example of the stranded conductor which concerns on Example 4 of this invention. The cross-sectional view which shows an example of the stranded conductor which concerns on Example 5 of this invention. The cross-sectional view which shows the other example of the stranded conductor which concerns on Example 5 of this invention. The cross-sectional view which shows the other example of the stranded conductor which concerns on Example 5 of this invention. The cross-sectional view which shows the other example of the stranded conductor which concerns on Example 5 of this invention. The cross-sectional view which shows an example of the stranded conductor which concerns on Example 6 of this invention. The cross-sectional view which shows the other example of the stranded conductor which concerns on Example 6 of this invention. The cross-sectional view which shows the other example of the stranded conductor which concerns on Example 6 of this invention. The cross-sectional view of the stranded conductor of the prior art 1. The cross-sectional view of the stranded conductor of the prior art 2.

A mode for carrying out the present invention will be described with reference to the drawings.

[Example 1]
FIG. 1 is a cross-sectional view cut in a direction orthogonal to the axial direction of the stranded conductor 1 according to the first embodiment of the present invention, and diagonal lines showing the cross sections of the strands are omitted in order to avoid complication of the figure. did.

The stranded conductor 1 has an inner layer 2 and an outer layer 3 provided on the outside of the inner layer 2. The inner layer 2 is composed of one center line 11.

The outer layer 3 is composed of two layers, a first outer layer 4 and an outermost layer 5.

As shown in FIG. 1, the first outer layer 4 is configured by arranging three first outer layer wires (strand wires) 12 provided on the outside of the inner layer 2 in the circumferential direction.

As shown in FIG. 1, the outermost layer 5 is composed of three outer diameter wires (strand wires) 13 and three outer thick diameter wires (strand wires) 14, for a total of six strands 13, 14. It is configured to surround the first outer layer 4.

The first outer layer lines 12 constituting the first outer layer 4 are arranged so as to be separated in the circumferential direction, and a gap 18 is formed between the adjacent first outer layer lines 12, 12.

The outer thick diameter wire 14 constituting the outermost layer 5 constitutes the first outer layer 4 and is located on the outer side of the gap 18 between the first outer layer lines 12 and 12 adjacent to each other in the circumferential direction. It is provided so as to come into contact with 12 and 12.

The outer diameter wire 13 constituting the outermost layer 5 is one between the outer diameter wires 14 and 14 adjacent to each other in the circumferential direction, and the outer diameter wire 14 and the first outer layer wire 12 constituting the first outer layer 4 are formed. It is arranged so as to abut.

The wire rods that form the basis of each of the strands 11, 12, 13, and 14 include bare copper wire, oxygen-free copper wire, linear crystal oxygen-free copper wire, copper wire such as single-crystal high-purity oxygen-free copper wire, and this copper. Wires plated with tin, nickel, silver, etc., aluminum wires, various alloy wires, and insulatingly coated wires such as enamel wire, litz wire, and formal wire can be used. The same material may be used or different materials may be used for the materials of the strands 11, 12, 13, and 14.

The diameter d1 of the center line 11 is set smaller than the diameter d2 of the first outer layer line 12, the diameter d2 of the first outer layer line 12 is set smaller than the diameter d3 of the outer thin diameter line 13, and the diameter d2 of the outer thin diameter line 13 is set smaller. The diameter d3 is set to be smaller than the diameter of the diameter d4 of the outer thick diameter wire 14.

In the first embodiment, the strands 11, 12, 13, and 14 having the relationship of d1 = 0.694 × d2, d3 = 1.838 × d2, d4 = 2.425 × d2 were used.

Further, the cross-sectional shape of the stranded wire conductor 1 is a substantially perfect circular shape, that is, the distance L1 from the center A of the center line 11 to the outermost edge B of the outer thick diameter line 14, and the outer thinness from the center A of the center line 11. It is formed so that the distance L2 to the outermost edge C of the diameter wire 13 is the same.

Since the stranded conductor 1 of the present invention has the above structure, it has the following actions and effects.

The outer shape of the stranded conductor 1 is substantially circular, and as described above, the diameter can be made smaller than that of the stranded conductor 101 of the prior art 1, so that the thickness of the insulating material coating can be reduced and the thickness is substantially uniform. Therefore, the amount of insulating material can be reduced and the cost can be reduced.

Further, unlike the twisted wire conductor 201 of the prior art 2, the twisted wire conductor 1 can have a substantially perfect circular shape in the outer shape of the twisted wire conductor 1 without passing a wire through a compression die, and thus has a stretch characteristic. , Flexibility, flexibility, and other physical characteristics are not impaired, the physical characteristics of the wire can be maintained, and highly reliable quality can be obtained. It can be effectively used in such cases.

Further, the stranded conductor 1 has improved physical characteristics such as stretchability, flexibility, and flexibility by increasing the porosity and lowering the arrangement density of the strands as compared with the prior arts 1 and 2. Can be made to.

[Example 2]
In the strands constituting the stranded wire conductor 1 of the first embodiment, the diameter d1 of the center wire 11 is smaller than the diameter d2 of the first outer layer wire 12, and the diameter d2 of the first outer layer wire 12 is the outer diameter wire 13. Each wire 11, 12, 13, 14 and the stranded conductor 1 are formed by using a wire having a diameter d3 smaller than the diameter d3 of the outer thin wire 13 and a diameter d3 of the outer thin wire 13 smaller than the diameter d4 of the outer thick wire 14. For example, the stranded wire conductor 1 can be configured by using any wire other than the wire having the diameter described in the first embodiment. Further, it may be compressed from the outer peripheral portion of the outermost layer 5 with a compression die or the like.

By this compression, the outer peripheral portions of the outer thin diameter wire 13 and the outer thick diameter wire 14 forming the outermost layer 5 are compressed and deformed, and the outer shape of the stranded conductor can be made closer to a perfect circular shape. The compression with a compression die or the like may be performed when the stranded conductor 1 is manufactured, or may be performed after the stranded conductor 1 is manufactured. The compression rate is set arbitrarily.

Since other structures are the same as those in the first embodiment, the description thereof will be omitted.

Also in the second embodiment, the same effect as that of the first embodiment can be exhibited.

[Example 3]
In the first and second embodiments, the first outer layer wire 12 constituting the first outer layer 4, the outer thin diameter wire 13 and the outer thick diameter wire 14 constituting the outermost layer 5 are set by three, respectively. It suffices if the number of the first outer layer wires 12 is the same as the number of the outer thin diameter wires 13 and the number of the outer thick diameter wires 14, and if the number is 3 or more, it can be set to an arbitrary number. can.

For example, as shown in FIG. 2, the first outer layer wire 12 of the first outer layer 4, the outer thin diameter wire 13 and the outer thick diameter wire 14 constituting the outermost layer 5 are each four lines, and the first outer layer wire 12 In the case of the stranded conductor 21 in which By using the wire rods that are the bases of, 12, 13, and 14, the cross-sectional shape of the stranded conductor 21 can be made into a substantially perfect circular shape with no compression or a low compression ratio.

For example, as shown in FIG. 3, the first outer layer wire 12 of the first outer layer 4, the outer thin diameter wire 13 and the outer thick diameter wire 14 constituting the outermost layer 5 are each five, and the first outer layer wire 12 In the case of the stranded conductors 22 arranged apart from each other in the circumferential direction, each strand 11 in which the relationship of d1 = 1.375 × d2, d3 = 1.125 × d2, d4 = 1.563 × d2 is established. By using the wire rods that are the bases of, 12, 13, and 14, the cross-sectional shape of the stranded conductor 22 can be made into a substantially perfect circular shape with no compression or a low compression ratio.

For example, as shown in FIG. 4, the first outer layer wire 12 of the first outer layer 4, the outer thin diameter wire 13 and the outer thick diameter wire 14 constituting the outermost layer 5 are each 6 lines, and the first outer layer wire 12 In the case of the stranded conductor 23 in which By using the wire rods that are the bases of, 12, 13, and 14, the cross-sectional shape of the stranded conductor 23 can be made into a substantially perfect circular shape with no compression or a low compression ratio.

Since other structures are the same as those in the first and second embodiments, the description thereof will be omitted.

Also in this Example 3, the same action and effect as those of Examples 1 and 2 can be exhibited.

[Example 4]
In Examples 1 to 3, the inner layer 2 is composed of one center line 11, but the center line 31 and the number of the first outer layer lines 12 of the first outer layer 4 are located outside the center line 31. The inner layer 33 may be composed of the first inner layer 32 formed by arranging the same number of first inner layer lines 15 in the circumferential direction.

The first inner layer line 15 is arranged outside the center line 31, and the adjacent first inner layer lines 15 and 15 are arranged so as to be in contact with each other. As the wire rod as the base of the first inner layer wire 15, the same wire rod as the wire rod as the base of the strands 11, 12, 13, 14 is used.

The first outer layer line 12 is arranged so as to be in contact with the first inner layer lines 15 and 15 on the outside of the valley portion 34 composed of the adjacent first inner layer lines 15 and 15.

For example, as shown in FIG. 5, one center line 31 is arranged and covered with eight first inner layer lines 15 around the center line 31 to form the first inner layer 32, and the first inner layer 32 is formed. The first outer layer 4 is formed by arranging eight first outer layer wires 12 so as to be spaced apart from each other in the circumferential direction, and eight outer fine diameter wires 13 and eight are arranged around the first outer layer 4. The outermost layer 5 may be formed by covering with the outer diameter wire of the above, and the stranded conductor 35 may be used.

The diameter of the first inner layer line 15 is d5, and each strand has a relationship of d1 = 1.269 × d2, d3 = 0.825 × d2, d4 = 1.200 × d2, d5 = 0.788 × d2. By using the wire rods as the bases of 11, 12, 13, 14, and 15, the cross-sectional shape of the stranded wire conductor 35 can be made into a substantially perfect circular shape with no compression or a low compression ratio.

For example, as shown in FIG. 6, the first inner layer wire 15 of the first inner layer 32, the first outer layer wire 12 of the first outer layer 4, the outer thin diameter wire 13 and the outer thick diameter wire 14 constituting the outermost layer 5. In the case of a stranded conductor 36 in which the first outer layer wires 12 are arranged apart from each other in the circumferential direction, d1 = 1.900 × d2, d3 = 0.750 × d2, d4 = 1. By using the wire that is the basis of each of the strands 11, 12, 13, 14, 15 for which the relationship of 088 × d2, d5 = 0.850 × d2 is established, the stranded conductor 36 is uncompressed or has a low compression ratio. The cross-sectional shape of can be made into a substantially perfect circular shape.

For example, as shown in FIG. 7, the first inner layer wire 15 of the first inner layer 32, the first outer layer wire 12 of the first outer layer 4, and the outer thin diameter wire 13 and the outer thick diameter wire 14 constituting the outermost layer 5. In the case of a stranded conductor 37 in which the first outer layer wires 12 are arranged apart from each other in the circumferential direction, d1 = 2.862 × d2, d3 = 0.769 × d2, d4 = 1. By using the wire rod that is the basis of each of the strands 11, 12, 13, 14, 15 for which the relationship of 154 × d2, d5 = d2 is established, the cross-sectional shape of the stranded conductor 37 can be made uncompressed or with a low compression ratio. It can be a substantially perfect circular shape.

Since other structures are the same as those in the first to third embodiments, the description thereof will be omitted.

Also in this Example 4, the same action and effect as those of Examples 1 to 3 can be exhibited.

[Example 5]
In Examples 1 to 3, the outer layer 3 is composed of two layers, the first outer layer 4 and the outermost layer 5, but the outer layer 41 is composed of three layers of the first outer layer 4, the second outer layer 42, and the outermost layer 5. It may be configured.

The center line 11 and the first outer layer 4 are configured in the same manner as in the above-described first to third embodiments.

The second outer layer 42 is configured by disposing the same number of second outer layer lines 16 as the number of first outer layer lines 12 of the first outer layer 4 on the outside of the first outer layer 4 so as to be separated in the circumferential direction. ing. A gap 43 is formed between the adjacent second outer layer lines 16 and 16. As the wire rod as the base of the second outer layer wire 16, the same wire rod as the wire rod as the base of the strands 11, 12, 13, 14 is used.

The second outer layer line 16 is provided on the outer side of the gap 18 between the first outer layer lines 12 and 12 so as to abut on the first outer layer lines 12, 12.

The outer thick diameter wire 14 constituting the outermost layer 5 constitutes the second outer layer 42, and the second outer layer line 16 is located outside the gap 43 between the second outer layer lines 16 and 16 adjacent to each other in the circumferential direction. , 16 are provided so as to come into contact with each other.

The outer diameter wire 13 constituting the outermost layer 5 is one between the outer diameter wires 14 and 14 adjacent to each other in the circumferential direction, and the outer diameter wire 14 and the second outer layer wire 16 constituting the first outer layer 4 are formed. It is arranged so as to abut.

For example, as shown in FIG. 8, one center line 11 is arranged, and three first outer layer lines 12 are arranged around the center line 11 so as to be spaced apart from each other in the circumferential direction. 4 is configured, and three second outer layer lines 16 are arranged around the first outer layer 4 so as to be spaced apart from each other in the circumferential direction to form a second outer layer 42, and three around the second outer layer 42. The outermost layer 5 may be formed by covering with the outer thin wire 13 and the three outer thick wires 14 to form the stranded wire conductor 45.

Let the diameter of the second outer layer line 16 be d6, and each strand that holds the relationship of d1 = 0.684 × d2, d3 = 3.868 × d2, d4 = 5.105 × d2, d6 = 2.105 × d2. By using the wire rods that are the bases of 11, 12, 13, 14, and 16, the cross-sectional shape of the stranded wire conductor 45 can be made into a substantially perfect circular shape with no compression or a low compression ratio.

For example, as shown in FIG. 9, the first outer layer wire 12 of the first outer layer 4, the second outer layer wire 16 of the second outer layer 42, and the outer thin diameter wire 13 and the outer thick diameter wire 14 constituting the outermost layer 5. In the case of a stranded conductor 46 in which the first outer layer wire 12 and the second outer layer wire 16 are arranged apart from each other in the circumferential direction, d1 = 0.833 × d2, d3 = 2.571. Uncompressed or low compression by using the wire that is the basis of each of the strands 11, 12, 13, 14, 16 for which the relationship of × d2, d4 = 3.524 × d2, d6 = 1.905 × d2 is established. By the ratio, the cross-sectional shape of the stranded conductor 46 can be made into a substantially perfect circular shape.

For example, as shown in FIG. 10, the first outer layer wire 12 of the first outer layer 4, the second outer layer wire 16 of the second outer layer 42, and the outer thin diameter wire 13 and the outer thick diameter wire 14 constituting the outermost layer 5. In the case of a stranded conductor 47 in which the first outer layer wires 12 are arranged apart from each other in the circumferential direction, d1 = 1.133 × d2, d3 = 2.000 × d2, d4 = 2. By using the wire rod that is the basis of each of the strands 11, 12, 13, 14, 16 for which the relationship of 778 × d2, d6 = 1.778 × d2 is established, the stranded conductor 47 is uncompressed or has a low compression ratio. The cross-sectional shape of can be made into a substantially perfect circular shape.

For example, as shown in FIG. 11, the first outer layer wire 12 of the first outer layer 4, the second outer layer wire 16 of the second outer layer 42, and the outer thin diameter wire 13 and the outer thick diameter wire 14 constituting the outermost layer 5. In the case of a stranded conductor 48 in which the first outer layer wires 12 are arranged apart from each other in the circumferential direction, d1 = 1.400 × d2, d3 = 1.620 × d2, d4 = 2. By using the wire that is the basis of each of the strands 11, 12, 13, 14, 16 for which the relationship of 270 × d2, d6 = 1.600 × d2 is established, the stranded conductor 48 is uncompressed or has a low compression ratio. The cross-sectional shape of can be made into a substantially perfect circular shape.

Since other structures are the same as those in Examples 1 to 3, the description thereof will be omitted.

Also in this Example 5, the same action and effect as those of Examples 1 to 3 can be exhibited.

[Example 6]
In the fifth embodiment, the inner layer 2 is composed of one center line 11. However, as in the fourth embodiment, the center line 31 and the first outer layer 4 are located outside the center line 31. The inner layer 33 may be composed of the first inner layer 32 formed by arranging the same number of first inner layer lines 15 in the circumferential direction as the number of outer layer lines 12.

For example, as shown in FIG. 12, one center line 31 is arranged and covered with eight first inner layer lines 15 around the center line 31 to form the first inner layer 32, and the first inner layer 32 is formed. The first outer layer 4 is formed by arranging eight first outer layer lines 12 so as to be spaced apart from each other in the circumferential direction, and eight second outer layer lines 16 are arranged around the first outer layer 4 in the circumferential direction. The second outer layer 42 is formed by arranging the second outer layer 42 so as to be separated from each other, and the outermost layer 5 is formed by covering the circumference of the second outer layer 42 with eight outer thin diameter wires 13 and eight outer thick diameter wires 14 . The stranded wire conductor 51 may be used.

D1 = 1.145 × d2, d3 = 1.200 × d2, d4 = 1.745 × d2, d5 = 0.709 × d2, d6 = 1.455 × d2, respectively. By using the wire rods as the bases of 13, 14, 15 and 16, the cross-sectional shape of the stranded wire conductor 51 can be made into a substantially perfect circular shape with no compression or a low compression ratio.

For example, as shown in FIG. 13, the first inner layer line 15 of the first inner layer 32, the first outer layer line 12 of the first outer layer 4, the second outer layer line 16 of the second outer layer 42, and the outermost layer 5 are configured. In the case of a stranded wire conductor 52 in which 10 outer thin diameter wires 13 and 10 outer thick diameter wires are arranged and the first outer layer wires 12 are arranged apart from each other in the circumferential direction, d1 = 1.990 × d2. Each strand 11, 12, 13, 14, 15, 16 for which the relationship of d3 = 1.101 × d2, d4 = 1.596 × d2, d5 = 0.881 × d2, d6 = 1.468 × d2 is established. By using the wire rod as the base of the above, the cross-sectional shape of the stranded wire conductor 52 can be made into a substantially perfect circular shape with no compression or a low compression ratio.

For example, as shown in FIG. 14, the first inner layer line 15 of the first inner layer 32, the first outer layer line 12 of the first outer layer 4, the second outer layer line 16 of the second outer layer 42, and the outermost layer 5 are configured. In the case of a stranded wire conductor 53 in which 12 outer thin diameter wires 13 and 12 outer thick diameter wires are arranged and the first outer layer wires 12 are arranged apart from each other in the circumferential direction, d1 = 2.480 × d2. It is the basis of each strand 11, 12, 13, 14, 15, 16 for which the relationship of d3 = d2, d4 = 1.400 × d2, d5 = 0.850 × d2, d6 = 1.500 × d2 is established. By using a wire rod, the cross-sectional shape of the stranded wire conductor 53 can be made into a substantially perfect circular shape with no compression or a low compression ratio.

Since other structures are the same as those in Examples 1 to 5, the description thereof will be omitted.

Also in this Example 6, the same action and effect as those of Examples 1 to 5 can be exhibited.

1,1,22,23,35,36,37,45,46,47,48,51,52,53 Stranded conductor 2,33 Inner layer 3,41 Outer layer 4 First outer layer 5 Outermost layer 11,31 Center line 12 1st outer layer wire 13 outer thin diameter wire 14 outer thick diameter wire 15 1st inner layer wire
16 2nd outer layer line 32 1st inner layer 42 2nd outer layer

Claims (4)

An inner layer composed of one center line arranged in the center, or one center line arranged in the center, and a plurality of first inner layer lines arranged outside the center line in the circumferential direction. It has an inner layer composed of the first inner layer formed by setting.
A first outer layer composed of a plurality of first outer layer lines is arranged on the outside of the inner layer.
The outside of the first outer layer is composed of an outer diameter wire having the same number of lines as the first outer layer wire and an outer diameter wire having the same number as the number of the first outer layer wires and thicker than the outer thin diameter wire. Arrange the outermost layer
The first outer layer line is arranged so as to be separated in the circumferential direction.
One outer thick diameter wire is arranged outside between the first outer layer wires adjacent to each other in the circumferential direction, and the outer thick diameter wire is arranged separated in the circumferential direction.
A stranded conductor characterized in that one outer thin diameter wire is arranged between adjacent outer thick diameter wires in the circumferential direction so as to be in contact with the first outer layer wire . An inner layer composed of one center line arranged in the center, or one center line arranged in the center, and a plurality of first inner layer lines arranged outside the center line in the circumferential direction. It has an inner layer that is constructed by installing it.
A first outer layer composed of a plurality of first outer layer lines is arranged on the outside of the inner layer.
A second outer layer composed of the same number of second outer layer lines as the number of the first outer layer lines is arranged outside the first outer layer.
The outside of the second outer layer is composed of an outer thin diameter wire having the same number of lines as the first outer layer wire and an outer diameter wire having the same number as the number of the first outer layer wires and thicker than the outer thin diameter wire. Arrange the outermost layer
The first outer layer line is arranged so as to be separated in the circumferential direction.
The second outer layer line is arranged outside between the first outer layer lines adjacent to each other in the circumferential direction.
The outer thick diameter wire is arranged outside between the second outer layer wires adjacent to each other in the circumferential direction, and one outer thin diameter wire is arranged between the outer thick diameter wires adjacent to each other in the circumferential direction. Stranded conductor. The distance from the center of the stranded conductor to the outer edge of the outer diameter wire constituting the outermost layer, and
The stranded conductor according to claim 1 or 2, wherein the distance from the center of the stranded conductor to the outer edge of the outer thick wire constituting the outermost layer is the same. The stranded conductor according to any one of claims 1 to 3, wherein the strands constituting the outermost layer are compressionally deformed from the outside.

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