JP2022096225A - Twisted-wire conductor - Google Patents

Abstract

To provide a twisted-wire conductor which can be manufactured with a sectional shape of the twisted-wire conductor similar to a complete round shape without compression or at a low compression rate.SOLUTION: Large-diameter wires 16 are arranged spaced apart in a peripheral direction. Two third middle-diameter wires 15, 15 are arranged in the peripheral direction between the large-diameter wires 16, 16 adjacent to each other in the peripheral direction. One small-diameter wire 12 is disposed inside a valley 18 of third middle-diameter wires 15 adjacent to each other in the peripheral direction. One second middle-diameter wire 14 is disposed inside a valley 20 of the third middle-diameter wires 15, 15 adjacent to each other in the peripheral direction. One first middle-diameter wire 13 is disposed between the second middle-diameter wire 14 and the large-diameter wire 16. The diameter of the large-diameter wire 16 is larger than that of the third middle-diameter wire 15. The diameter of the third middle-diameter wire 15 is larger than that of the second middle-diameter wire 14. The diameter of the second middle-diameter wire 14 is larger than that of the first middle-diameter wire 13. The diameter of the first middle-diameter wire 13 is larger than that of the small-diameter wire 12.SELECTED DRAWING: Figure 1

Description

The present invention relates to a stranded conductor.

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 composed of 19 strands generally has one strand 102 at the center of the stranded conductor 101 as a core and six around it, as shown in FIG. The strands 103 surround the inner layer to form an inner layer, and the outer periphery thereof is surrounded by twelve strands 104 to form an outer layer, which are twisted in the same direction.

Since the strands 102, 103, and 104 all have a circular cross section and the same diameter, when the strands 102, 103, and 104 are arranged in a standard core wire arrangement to form a stranded conductor 101, the outer peripheral shape thereof is formed. As shown in FIG. 7, 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.

As shown in FIG. 7, the stranded conductor 101 is generally used as an electric wire or the like (covered wire) 107 after the outer peripheral portion is coated with an insulating material 106. It is desired that the cross-sectional shape of the covered wire is a substantially perfect circular shape. On the other hand, it is desirable that the insulating material 106 is substantially uniformly coated on the outer peripheral portion of the stranded conductor 101 from the viewpoint of pressure resistance characteristics. Therefore, it is desired that the cross-sectional shape of the stranded conductor is a perfect circle.

Further, it is very important to reduce the weight of the insulating material 106 containing petroleum as a main component from the viewpoint of effective use of resources, and it is required to reduce the diameter of the stranded conductor.

However, if the outer shape of the cross-sectional shape of the stranded wire conductor 101 is hexagonal and the outer shape of the cross-sectional shape of the covered wire 107 is a perfect circle, the cross-sectional shape of the stranded wire conductor 101 is located near the apex of the hexagon. The thickness of the insulating material 106 is thin, and becomes thicker from the apex portion to the side portion of the hexagon, which causes a problem that the thickness of the insulating material 106 becomes non-uniform.

Further, in order to prevent poor pressure resistance, it is necessary to secure a certain thickness or more of the insulating material 106 located at the apex of the hexagon. Therefore, the covered wire 107 cannot be made thinner than the diameter from the center of the stranded conductor 101 to the outermost edge thereof, and there is a problem that there is a limit to the diameter reduction and weight reduction of the covered wire.

Further, although the insulating material 106 located at the side portion is excessive from the viewpoint of performance, it is necessary to make the cross section a perfect circle, so that there is a problem that there is a limit to the weight reduction of the insulating material 106. be.

Further, if the cross-sectional shape of the stranded conductor 101 is hexagonal, there is a problem that the stranded conductor 101 may be damaged when stripping the insulating material 106 when the coated wire is terminally processed or the like.

The above problem can be solved by making the cross-sectional shape of the stranded conductor a substantially perfect circle.

As a means for solving this, for example, as described in Patent Document 1, a wire 202 having a circular cross section and all having the same diameter is twisted as shown in FIG. 8 by passing a compression die while twisting in one direction. A method has been proposed in which the cross-sectional shape of the wire 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

As shown in FIG. 8, the stranded conductor 201 of the prior art 2 has stretch characteristics, flexibility, and flexibility due to compression deformation of the outer layer wire when the wire 202 is passed through a compression die. There is a problem that physical characteristics such as are impaired.

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 wire conductor 101.

Therefore, in the present invention, 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 prior art 2. It is an object of the present invention to provide a stranded conductor that can be formed.

In order to solve the above-mentioned problems, the invention according to claim 1 includes a plurality of large-diameter wires, a plurality of first medium-diameter wires, a plurality of second-diameter wires, and a plurality of third-diameter wires. , Has an outer layer composed of multiple small diameter wires,
The thick wire is provided so as to be separated in the circumferential direction.
Two third medium-diameter wires are arranged in the circumferential direction between the large-diameter wires adjacent to each other in the circumferential direction.
One small diameter wire is arranged inside the valley of the third medium diameter wire adjacent to each other in the circumferential direction.
One second medium-diameter line is arranged outside the valley portion of the third medium-diameter line adjacent to each other in the circumferential direction.
One first medium-diameter wire is arranged between the second medium-diameter wire and the large-diameter wire.
The diameter of the large diameter line is larger than the diameter of the third medium diameter line, the diameter of the third medium diameter line is larger than the diameter of the second medium diameter line, and the diameter of the second medium diameter line is the first. It is characterized in that it is larger than the diameter of one medium-diameter line, and the diameter of the first medium-diameter line is larger than the diameter of the small-diameter line.

The invention according to claim 2 is the invention according to claim 1, wherein an inner layer composed of a plurality of strands is arranged inside the outer layer.
The first medium-diameter wire constitutes the outermost layer in the anterior inner layer, and is characterized in that it is arranged outside a valley portion composed of strands adjacent in the circumferential direction.

The invention according to claim 3 has the same number of strands constituting the outermost layer in the inner layer, the number of large diameter wires, and the number of second medium diameter wires in the invention of claim 2. It is characterized by the fact that.

The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the distance from the center of the stranded wire conductor to the outermost edge of the large diameter wire constituting the outer layer and the said. The distance from the center to the outermost edge of the first middle diameter line constituting the outer layer is the same as the distance to the outermost edge of the second middle diameter line constituting the outer layer. It is a thing.

The invention according to claim 5 is characterized in that, in the invention according to any one of claims 1 to 4, the number of the large diameter wires is 6 or more.

According to the present invention, two third medium-diameter wires are arranged in the circumferential direction between the large-diameter wires adjacent to each other in the circumferential direction, and one inside the valley portion of the third medium-diameter wires adjacent to each other in the circumferential direction. A small diameter wire of a book is arranged, and one second medium diameter wire is arranged outside the valley portion of the third medium diameter wire adjacent to each other in the circumferential direction, and the second medium diameter wire and the large diameter wire are arranged. By arranging one first medium diameter wire between the two, the cross-sectional shape of the stranded wire conductor is made into a substantially perfect circular shape, and the diameter of the stranded wire conductor is reduced, the weight is reduced, and the flexibility is improved. Can be done.

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 a 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.

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 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 a first inner layer 5 composed of one center line (strand line) 10 and six first inner layer lines 11 arranged so as to surround the center line 10, and the first inner layer line 11. Corresponds to the strands constituting the first inner layer 5 located on the outermost side of the inner layer 2. The center line 10 and the first inner layer line 11 have the same diameter.

As shown in FIG. 1, the outer layer 3 has 6 small diameter wires (wires) 12, 12 first medium diameter wires (wires) 13, and 6 second medium diameter wires (wires). ) 14, 12 third medium-diameter wires (strands) 15, and 6 thick-diameter wires (strands) 16 for a total of 42 strands 12, 13, 14, 15, 16 for the first inner layer. It is configured to surround 5.

The thick diameter line 16 is provided outside the first inner layer line 11 constituting the first inner layer 5, and the center of the thick diameter line 16 is located on a line passing through the center of the center line 10 and the first inner layer line 11. It is preferable that the center of the large diameter line 16 is located on a line passing through the center of the center line 10 and the center of the first inner layer line 11.

The third medium-diameter wire 15 abuts on the first inner-diameter wire 11 and the thick-diameter wire 16 of the first inner layer 5 at the inner portion in the radial direction between the thick-diameter wire 16 and the thick-diameter wire 16 adjacent to each other in the circumferential direction. As shown above, two are arranged in the circumferential direction.

The small diameter wire 12 constitutes the inside of the valley portion 18 formed between the third medium diameter wire 15 and the third medium diameter wire 15 adjacent to each other in the circumferential direction, and the first inner layer 5, and also forms the circumferential direction. In the space formed outside the valley portion 19 formed between the first inner layer lines 11 and 11 adjacent to the first inner layer 5, the first inner layer line 11 and the third middle diameter line 15 of the first inner layer 5 are formed. It is arranged so as to abut.

The second medium-diameter wire 14 is the outer portion in the radial direction between the large-diameter wire 16 and the large-diameter wire 16 adjacent to each other in the circumferential direction, and the third medium-diameter wire 15 and the third medium-diameter wire adjacent to each other in the circumferential direction. One is arranged so as to abut on the third medium-diameter wire 15 on the outside of the valley portion 20 formed between the wire 15 and the valley portion 20.

The first medium-diameter wire 13 is the outer portion in the radial direction between the large-diameter wire 16 and the large-diameter wire 16 adjacent to each other in the circumferential direction, and one between the large-diameter wire 16 and the second medium-diameter wire 14. It is arranged so as to abut on the large diameter wire 16 and the second medium diameter wire 14.

As the base wire of each strand 10, 11, 12, 13, 14, 15, 16, bare copper wire, oxygen-free copper wire, linear crystal oxygen-free copper wire, single crystal high-purity oxygen-free copper wire, etc. Copper wire, copper wire plated with tin, nickel, silver, etc., aluminum wire, various alloy wires, and insulating coating such as enamel wire, litz wire, formal wire, etc. can be used. can. The same material may be used or different materials may be used for the materials of the respective strands 10, 11, 12, 13, 14, 15, and 16.

The diameter d1 of the center line 10 is set to be the same as the diameter d2 of the first inner layer line 11. The diameter d2 of the first inner layer line 11 is set to be larger than the diameter d3 of the large diameter line 16, and the diameter d3 of the large diameter line 16 is set to be larger than the diameter d4 of the diameter d4 of the third medium diameter line 15. The diameter of the diameter d4 of the diameter line 15 is set to be larger than the diameter of the diameter d5 of the second medium diameter line 14, and the diameter of the diameter d5 of the second medium diameter line 14 is the diameter of the diameter d6 of the first medium diameter line 13. It is set to be larger, and the diameter of the diameter d6 of the first medium diameter wire 13 is set to be larger than the diameter d7 of the small diameter wire 12.

In the first embodiment, d1 = d2, d3 = 0.825 × d2, d4 = 0.545 × d2, d5 = 0.52 × d2, d6 = 0.425 × d2, d7 = 0.30 × d2. The strands 10, 11, 12, 13, 14, 15, and 16 for which the relationship is established 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 10 to the outermost edge B of the large diameter line 16 and the second middle from the center A of the center line 10. The distance L2 to the outermost edge C of the diameter line 14 and the distance L3 from the center A of the center line 10 to the outermost edge D of the first middle diameter line 13 are formed to be the same.

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

The cross-sectional shape of the stranded conductor 1 is a substantially perfect circular shape, and all the strands 10, 11, 12, 13, 14, 15, 16 adjacent to the strands 10, 11, 12, 13, 14, 15, 16 are Since it can be in contact with 16, the twisted form can be stabilized and the conductor density of the twisted wire conductor 1 can be increased, so that the diameter of the twisted wire conductor 1 can be reduced, the weight can be reduced, and the flexibility can be improved. can.

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 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. F

[Example 2]
In the strands constituting the stranded wire conductor 1 of the first embodiment, the diameter d1 of the center wire 10 is the same as the diameter d2 of the first inner layer wire 11, and the diameter d2 of the first inner layer wire 11 is the large diameter wire 16. The diameter d3 of the large diameter line 16 is larger than the diameter d3 of the third medium diameter line 15, and the diameter d4 of the diameter d4 of the third medium diameter line 15 is the diameter of the second medium diameter line 14. Larger than the diameter of d5, the diameter of the second medium diameter line 14 The diameter of d5 is larger than the diameter of the diameter d6 of the first medium diameter line 13, and the diameter of the diameter d6 of the first medium diameter line 13 is the diameter of the small diameter line 12. If each of the strands 10, 11, 12, 13, 14, 15, 16 and the stranded wire conductor 1 are configured by using a wire having a diameter larger than d7, the wire having the diameter described in the first embodiment can be used in addition to the wire having the diameter d7. The stranded wire conductor 1 can be configured by using any wire. Further, it may be compressed from the outer peripheral portion of the outer layer 3 with a compression die or the like.

By this compression, the outer layer 3 is formed, and the outer peripheral portions of 13, 14 and 16 located on the outermost side in the radial direction are compressed and deformed, so that 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 can be 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 number of the large diameter wire 16, the second medium diameter wire 14, and the small diameter wire 12 constituting the outer layer 3 are six, respectively, and the number of the first medium diameter wire 13 and the third medium diameter wire 15. The number of the large diameter wires 16 is the same as the number of the second medium diameter wires 14 and the number of the small diameter wires 12, and the number of the first medium diameter wires 13 and the third is the same. If the number of the medium-diameter wires 15 is twice the number of the large-diameter wires 16 and the number of the large-diameter wires 16 is 6 or more, the number of the medium-diameter wires 15 can be set to any arbitrary number. Further, the number of the first inner layer lines 11 constituting the first inner layer 5, which is the outermost layer of the inner layer 2, is set to the same number as the number of the large diameter lines 16.

For example, as shown in FIG. 2, the first inner layer wire 11 constituting the first inner layer 5A of the inner layer 2A, the large diameter wire 16 constituting the outer layer 3A, the second medium diameter wire 14, and the thin diameter wire 12 are seven. In the case of the stranded wire conductor 21 in which the number of the first medium-diameter wire 13 and the third medium-diameter wire 15 constituting the outer layer 3A is 14 each, which is twice the number of 7, d1 = 1.305 × d2. D3 = 0.75 × d2, d4 = 0.51 × d2, d5 = 0.455 × d2, d6 = 0.39 × d2, d7 = 0.29 × d2 By using the wire rods that are the basis of 12, 13, 14, 15 and 16, the cross-sectional shape of the stranded wire conductor 21 can be made into a substantially perfect circular shape with no compression or a low compression ratio, and all the strands 10 ,. 11, 12, 13, 14, 15, 16 can abut on all adjacent strands 10, 11, 12, 13, 14, 15, 16.

For example, as shown in FIG. 3, the first inner layer wire 11 constituting the first inner layer 5B of the inner layer 2B, the large diameter wire 16 constituting the outer layer 3B, the second medium diameter wire 14, and the small diameter wire 12 are eight. In the case of the stranded wire conductor 22 in which the number of the first medium diameter wire 13 and the third medium diameter wire 15 constituting the outer layer 3B is 16 each, which is twice the number of 8 wires, d1 = 1.615 × d2. D3 = 0.705 × d2, d4 = 0.47 × d2, d5 = 0.43 × d2, d6 = 0.355 × d2, d7 = 0.28 × d2 By using the wire rods that are the basis of 12, 13, 14, 15 and 16, the cross-sectional shape of the stranded wire conductor 22 can be made into a substantially perfect circular shape with uncompressed or low compression ratio, and all the strands 10. 11, 12, 13, 14, 15, 16 can abut on all adjacent strands 10, 11, 12, 13, 14, 15, 16.

For example, as shown in FIG. 4, nine inner layer wires 11 constituting the first inner layer 5C of the inner layer 2C, a large diameter wire 16 constituting the outer layer 3C, a second medium diameter wire 14, and a small diameter wire 12 are provided. In the case of the stranded wire conductor 23 in which the number of the first middle diameter wire 13 and the third middle diameter wire 15 constituting the outer layer 3C is 18 each, which is twice the number of 9, d1 = 1.925 × d2. D3 = 0.65 × d2, d4 = 0.46 × d2, d5 = 0.39 × d2, d6 = 0.33 × d2, d7 = 0.26 × d2 , 12, 13, 14, 15, 16 makes the cross-sectional shape of the stranded wire conductor 23 a substantially perfect circular shape with uncompressed or low compression ratio, and all the strands 10. 11, 12, 13, 14, 15, 16 can abut on all adjacent strands 10, 11, 12, 13, 14, 15, 16.

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.

In the third embodiment, since the outer layer 3 can be further composed of six or more large diameter wires 16, the first medium diameter wire 13, the second medium diameter wire 14, and the small diameter wire 12, the stranded wire conductor It has a high degree of freedom in designing 1, 1, 2, 22 and 23, and can be applied to those requiring a wide range of conductor areas from small diameter stranded wire conductors to large diameter stranded wire conductors.

[Example 4]
In the above Examples 1 to 3, the inner layer 2 is composed of the first inner layer line 11 having the same number of the center line 10 of one core and the large diameter wire 16, but the inner layer is composed of a plurality of strands. If the number of strands constituting the outermost layer of the inner layer and the number of large diameter wires 16 are the same, the number of layers constituting the inner layer and the number of strands constituting each layer are arbitrarily set. be able to.

Further, the type of the wire constituting the inner layer may be one type or a plurality of types having different diameters. Further, as the raw wire forming the inner layer, a copper wire, a copper wire plated with tin, nickel, silver, etc., an aluminum wire, various alloy wires, and an insulating coating such as an enamel wire, a formal wire, etc. Etc. may be used, and the same material as the wire forming the outer layer may be used, or a different material may be used.

For example, as shown in FIG. 5, one center line 31 is arranged and covered with eight first inner layer lines 32 around the center line 31 to form the first inner layer 33, and the first inner layer 33 is formed. A second inner layer 35 is formed by covering it with eight second inner layer lines 34, and an inner layer 36 is formed by a center line 31, a first inner layer 33, and a second inner layer 35, and a second inner layer 36 is formed outside the inner layer 36. The stranded conductor 38 may be formed by disposing the same outer layer 3B as the outer layer 3B of the stranded conductor 23 shown in FIG. 3, which is composed of the same eight large diameter wires 16 as the inner layer wire 34. In the stranded conductor 38, the outermost layer of the inner layer 36 corresponds to the second inner layer 35, and the number of the second inner layer wires 34 constituting the second inner layer 35 and the large diameter wire 16 is the same. Further, a small diameter wire 12 constituting the outer layer 3B is arranged outside the valley portion formed between the second inner layer 35 and the adjacent second inner layer lines 34 and 34.

Further, as shown in FIG. 6, a first inner layer 42 composed of three first inner layer lines 41 is formed in the central portion, and the circumference of the first inner layer 42 is covered with nine second inner layer lines 43. FIG. 4 comprises a second inner layer 44, a first inner layer 42, a second inner layer 44, and an inner layer 47, and on the outside of the inner layer 47, the same nine thick diameter wires 16 as the second inner layer wire 43 are formed. The outer layer 3C similar to the outer layer 3C of the stranded conductor 23 shown in the above may be arranged to form the stranded conductor 48. In the stranded conductor 48, the outermost layer of the inner layer 47 corresponds to the second inner layer 43, and the number of the second inner layer wires 43 constituting the second inner layer 44 and the large diameter wire 16 is the same. Further, a small diameter wire 12 constituting the outer layer 3C is arranged outside the valley portion formed between the second inner layer 43 and the adjacent second inner layer lines 42 and 42.

Since other structures are the same as those in Examples 1 to 3, 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.

1,1,2,22,23,38,48 Stranded conductor 2,2A, 2B, 2C, 36,47 Inner layer 3,3A, 3B, 3C Outer layer 12 Small diameter wire 13 1st medium diameter wire 14 2nd medium diameter wire 15 3rd medium diameter wire 16 Large diameter wire

In order to solve the above-mentioned problems, the invention according to claim 1 includes a plurality of large diameter wires, a plurality of first medium diameter wires, a plurality of second medium diameter wires, and a plurality of third medium diameter wires. A stranded conductor having an outer layer composed of a plurality of small diameter wires and an inner layer composed of a plurality of strands inside the outer layer.
The large-diameter wire is arranged outside the strands constituting the outermost layer in the inner layer and provided apart from each other in the circumferential direction, and the center of the large-diameter wire is the center of the stranded conductor. , Provided so as to be located on a straight line passing through the strands constituting the outermost layer in the inner layer.
Two third medium-diameter wires are arranged in the circumferential direction between the large-diameter wires adjacent to each other in the circumferential direction.
One small diameter wire is arranged inside the valley of the third medium diameter wire adjacent to each other in the circumferential direction.
One second medium-diameter line is arranged outside the valley portion of the third medium-diameter line adjacent to each other in the circumferential direction.
One first medium-diameter wire is arranged between the second medium-diameter wire and the large-diameter wire.
The number of strands constituting the outermost layer in the inner layer is the same as the number of large diameter wires.
The diameter of the large diameter line is larger than the diameter of the third medium diameter line, the diameter of the third medium diameter line is larger than the diameter of the second medium diameter line, and the diameter of the second medium diameter line is the first. It is characterized in that it is larger than the diameter of one medium-diameter line, and the diameter of the first medium-diameter line is larger than the diameter of the small-diameter line.

The invention according to claim 2 is the invention according to claim 1, wherein the small diameter wire constitutes a outermost layer in the inner layer and is composed of strands adjacent to each other in the circumferential direction. It is characterized by being arranged on the outside.

Claims (5)

It has an outer layer composed of a plurality of large-diameter wires, a plurality of first medium-diameter wires, a plurality of second-diameter wires, a plurality of third-diameter wires, and a plurality of small-diameter wires.
The thick wire is provided so as to be separated in the circumferential direction.
Two third medium-diameter wires are arranged in the circumferential direction between the large-diameter wires adjacent to each other in the circumferential direction.
One small diameter wire is arranged inside the valley of the third medium diameter wire adjacent to each other in the circumferential direction.
One second medium-diameter line is arranged outside the valley portion of the third medium-diameter line adjacent to each other in the circumferential direction.
One first medium-diameter wire is arranged between the second medium-diameter wire and the large-diameter wire.
The diameter of the large diameter line is larger than the diameter of the third medium diameter line, the diameter of the third medium diameter line is larger than the diameter of the second medium diameter line, and the diameter of the second medium diameter line is the first. A stranded wire conductor characterized in that it is larger than the diameter of the 1 medium diameter wire and the diameter of the 1st medium diameter wire is larger than the diameter of the small diameter wire. An inner layer composed of a plurality of strands is arranged inside the outer layer.
The twisted wire according to claim 1, wherein the small diameter wire constitutes the outermost layer in the inner layer and is arranged outside a valley portion composed of strands adjacent to each other in the circumferential direction. conductor. The stranded conductor according to claim 2, wherein the number of strands constituting the outermost layer in the inner layer, the number of the large diameter wires, and the number of the second medium diameter wires are the same. The distance from the center of the stranded conductor to the outermost edge of the large-diameter wire constituting the outer layer, the distance from the center to the outermost edge of the first medium-diameter wire constituting the outer layer, and the outer layer. The stranded conductor according to any one of claims 1 to 3, wherein the distance to the outermost edge of the second medium diameter wire constituting the above is the same. The twisted wire conductor according to any one of claims 1 to 4, wherein the number of large diameter wires is 6 or more.

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