JP2016207345A - Stranded wire conductor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stranded wire conductor consisting of 61-core element wires and capable of forming its outer shape into a substantially perfect circular shape by compression processing at a low compression ratio or without compression processing.SOLUTION: In a stranded wire conductor, a center wire 11 is formed of first medium-diameter inner layer wires 3, a first layer 12 is formed of the first medium-diameter inner layer wires 3, a second layer 13 is formed by alternately arranging small-diameter inner layer wires 2 and large-diameter inner layer wires 5, a third layer 14 is formed by arranging two-core second medium-diameter inner layer wires 4, 4 between circumferentially adjacent one-core small-diameter inner layer wires 2, and the outermost layer 15 is formed by arranging a large-diameter outer layer wire 8 in a valley part of the two-core second medium-diameter inner layer wires 4, 4, medium-diameter outer layer wires 7 are arranged to sandwich the large-diameter outer layer wire 8 in the circumferential direction, and small-diameter outer layer wires 6 are arranged between the medium-diameter outer layer wires 7, 7 and at a position outside the small-diameter inner layer wires 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a stranded wire conductor, and more particularly, to a stranded wire conductor configured of a 61-core concentric stranded arrangement used for electric wires and the like.

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

  In addition, as shown in FIG. 3, a stranded conductor composed of 61 cores generally has a center line 102 in which one core 101 is arranged at the center and 6 cores around the center line 102. A first layer 103 formed by surrounding the first strand 103, a second layer 104 formed by surrounding the outer periphery of the first layer 103 with a 12-core strand 101, and an 18-core strand surrounding the first layer 103 The stranded wire conductor 100 is constituted by a third layer 105 formed by surrounding 101 and a fourth layer (outermost layer) 106 formed by surrounding the outer periphery of the third layer 105 by 24 core wires 101. Yes. Moreover, the twisted wire conductor 100 is manufactured by twisting the wire which forms the strand 101 in the same direction with a twisting machine.

  Since each of the strands 101 is formed of a wire having a circular cross section and the same diameter, the outer shape of the cross section of the 61-core concentric strand arrangement stranded conductor 100 constituted by the strands 101 is used. As shown in FIG. 3, the shape is a shape that approximates a hexagonal shape, and does not become a shape that approximates a round shape. Hereinafter, the above-described stranded wire conductor 100 is referred to as Conventional Technology 1.

  Moreover, the stranded wire conductor 100 is generally used for an electric wire or the like as a covered wire in which an outer peripheral portion is coated with an insulating material 110, as shown in FIG. The outer shape of the covered wire is desired to be a substantially perfect circle. On the other hand, it is desirable that the insulating material 110 is coated on the outer peripheral portion of the stranded wire conductor 100 with a substantially uniform thickness in terms of pressure resistance. Therefore, it is desired that the outer shape of the stranded wire conductor is a perfect circle.

  Further, the reduction in the amount of the insulating material 110 mainly composed of petroleum is very important from the viewpoint of effective use of resources, and the stranded wire conductor is required to be reduced in diameter and rounded.

  However, if the outer shape of the stranded wire conductor 100 is a hexagon and the outer shape of the coated wire is a perfect circle as described above, the outer shape of the stranded wire conductor 100 is the apex of the hexagon as shown in FIG. The thickness of the insulating material 110 located in the vicinity of the portion is thin, and becomes thicker as it reaches the center of the hexagonal side portion, resulting in a problem that the thickness of the insulating material 110 becomes non-uniform. Further, in order to prevent a breakdown voltage failure, it is necessary to secure a certain thickness or more for the insulating material 110 located at the apex of the hexagon. Therefore, the coated wire cannot be made thinner than the diameter from the center of the stranded wire conductor 100 to its apex, and there is a problem that there is a limit to reducing the diameter and weight of the coated wire.

  In addition, the thickness of the insulating material 110 located on the side of the hexagon is excessive from the viewpoint of performance, but is necessary to make the cross section a perfect circle. There is a problem that a limit arises.

  In addition, when the outer shape of the stranded wire conductor 100 is a hexagon, there is a problem that the stranded wire conductor 100 may be damaged when the covering material 110 is stripped when the coated wire is subjected to terminal processing.

  The above problem can be solved by making the outer shape of the stranded conductor into a substantially perfect circle.

As a means for solving this problem, as described in Patent Document 1, all wires having the same cross-sectional shape and the same diameter are passed through a compression die while twisting in one direction. There has been proposed a method in which the outer surface 203 of the outer layer wire 202 is deformed under pressure so that the outer shape of the stranded conductor 201 becomes a substantially perfect circle. Hereinafter, the stranded wire conductor 201 is referred to as Conventional Technology 2.
JP 2000-057852 A

  In the above-described stranded wire conductor 201 of the prior art 2, in order to make the outer shape substantially circular, a high compression ratio ((1−inner diameter of compression die / outer diameter when wires are gathered) × 100) Is required. As described above, when the outer layer wire 202 is deformed at a high compression rate, there is a problem that physical properties such as stretch characteristics, flexibility, and flexibility of the stranded conductor 201 are impaired.

  Therefore, the present invention provides a twisted wire conductor composed of 61 strands, the strand being compressed at a lower compressibility than the twisted wire conductor of the prior art 2, or without being compressed. An object of the present invention is to provide a stranded wire conductor capable of making the outer shape of the conductor into a substantially perfect circle.

In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a single core wire is a center line, and a six-core wire surrounds the center line to form a first layer, A 12-core element wire surrounds the outer periphery of the first layer to form a second layer, and an outer periphery of the second layer is surrounded by an 18-core element wire to form a third layer. A 61-core stranded wire conductor that surrounds the outer periphery with 24 core wires to form the outermost layer;
The center line is constituted by a first medium-diameter inner layer line, the first layer is constituted by six first medium-diameter inner layer lines, and the second layer is constituted by a six-core inner diameter line and a six-core inner diameter line. The lines are arranged alternately in the circumferential direction,
The third layer is composed of six core inner diameter wires and twelve second inner diameter inner core wires, and the one core inner diameter wire and one core inner diameter wire that are adjacent in the circumferential direction. The second medium-diameter inner layer wire having two cores is arranged between
The outermost layer is composed of a 6-core thin outer layer wire, a 12-core medium-diameter outer layer wire, and a 6-core large-diameter outer layer wire. The outer layer wires are arranged, and the medium-diameter outer layer wires are arranged one by one so as to sandwich the large-diameter outer layer wires in the circumferential direction, and further, between the medium-diameter outer layer wires and between the small-diameter inner layer wires. The thin outer layer wire is arranged so as to be located outside,
The diameter of the wire that is the basis of the thin inner layer wire is smaller than the diameter of the wire that is the basis of the thin outer layer wire, and the diameter of the wire that is the basis of the thin outer layer wire is the base of the medium diameter outer layer wire. The diameter of the wire that is the basis of the medium-diameter outer layer wire is smaller than the diameter of the wire that is the basis of the first medium-diameter inner layer wire and the second medium-diameter inner layer wire, The diameters of the wires that are the basis of the 1 medium-diameter inner layer wire and the second medium-diameter inner layer wire are smaller than the diameter of the wire that is the basis of the large-diameter outer layer wire, and the diameter of the wire that is the basis of the large-diameter outer layer wire Is smaller than the diameter of the wire used as the base of the said large diameter inner layer wire.

  The invention according to claim 2 is the twisted wire conductor according to claim 1, wherein the diameter of the wire that is the basis of the first medium diameter inner layer wire is larger than the diameter of the wire that is the basis of the second medium diameter inner layer wire. It is characterized by being small.

  The invention according to claim 3 is the stranded wire conductor according to claim 1, wherein the diameter of the wire that is the basis of the first inner diameter inner layer wire is the diameter of the wire that is the basis of the second inner diameter inner layer wire. It is characterized by being the same.

  According to a fourth aspect of the present invention, in the stranded conductor according to any one of the first to third aspects, the outermost layer is formed by compression deformation.

  According to the present invention, the strand is compressed or deformed at a compression rate lower than that of the stranded wire conductor 201 of the prior art 2 to form the stranded wire conductor, and the outer shape of the stranded wire conductor. Can be made into a substantially circular shape.

  Thereby, when compression deformation does not occur, in the present invention, the stranded wire conductor 201 formed by compression in the prior art 2 is not passed through the compression die in the present invention, that is, the outer layer strand is The outer shape of the stranded wire conductor can be made into a substantially perfect circle shape without compressive deformation. Therefore, the physical properties of the wire can be maintained without deteriorating the physical properties such as the expansion property, flexibility, and flexibility of the wire, and a highly reliable stranded conductor can be obtained. .

  In addition, since a compression die is not required, the production machine (twisting machine) does not need to have a rotation speed lower than a certain value and does not need to be stabilized, as compared to a production machine that requires a compression die. Efficiency can be increased.

  Further, even in the case of compressive deformation, the outer shape can be made into a substantially perfect circle shape with a lower compression rate than the stranded wire conductor 201 of the prior art 2, so that the wire has a stretch characteristic, flexibility, flexibility, etc. Therefore, the physical properties of the strands can be kept high, and a highly reliable quality can be obtained.

  As described above, the outer shape of the stranded wire conductor is a substantially circular shape, and as described above, the diameter of the stranded wire conductor can be made smaller than that of the stranded wire conductor 100 of the prior art 1, thereby reducing the thickness of the insulation coating over the entire circumference. Can be made substantially uniform, the amount of insulating material can be reduced, and the cost can be reduced.

The cross-sectional schematic diagram cut | disconnected in the direction orthogonal to the axial direction of the strand wire conductor which concerns on Example 1 of this invention. The cross-sectional schematic diagram cut | disconnected in the direction orthogonal to the axial direction of the strand wire conductor which concerns on Example 2 of this invention. Sectional drawing cut | disconnected in the direction orthogonal to the axial direction of the strand wire conductor of the prior art 1. FIG. Sectional drawing cut | disconnected in the direction orthogonal to the axial direction of the strand wire conductor of the prior art 2. FIG.

  The best mode for carrying out the present invention will be described with reference to FIGS.

[Example 1]
FIG. 1 shows Example 1 of the present invention.

  FIG. 1 is a schematic cross-sectional view cut in a direction orthogonal to the axial direction of the stranded wire conductor 1, and is a schematic view when the cross-sectional shape of the wire that is the basis of each strand is the same as the cross-sectional shape of the strand. . In addition, the oblique line which shows the cross section of each strand was abbreviate | omitted in order to avoid the complexity of a figure.

  The stranded conductor 1 shown in Example 1 is formed by twisting a total of 61 strands arranged as shown in FIG. 1 in the circumferential direction around the axis. This strand includes a thin inner layer wire (strand) 2, a first medium diameter inner layer wire (strand) 3, a second medium diameter inner layer wire (strand) 4, and a large diameter inner layer wire (strand). 5, a thin outer layer wire (element wire) 6, a middle diameter outer layer wire (element wire) 7, and a thick outer layer wire (element wire) 8.

  In addition, the stranded wire conductor 1 includes a center line 11 constituted by a single first medium-diameter inner layer wire 3 positioned at the center, and a six-core first core disposed so as to surround the outer periphery of the center line 11. A total consisting of a first layer 12 constituted by a medium-diameter inner layer wire 3, a six-core large-diameter inner-layer wire 5 and a six-core thin-diameter inner-layer wire 2 arranged so as to surround the outer periphery of the first layer 12 A total of 18 composed of a second layer 13 formed of 12 cores, 12 cores of the second medium-diameter inner layer wire 4 and 6 cores of a thin inner layer wire 2 disposed so as to surround the outer periphery of the second layer 13. The third layer 14 formed by the core, the 6-core thin outer layer wire 6 and the 12-core medium-diameter outer layer wire 7 and the 6-core large-diameter outer layer disposed so as to surround the outer periphery of the third layer 14. It is composed of a fourth layer (outermost layer) 15 formed by a total of 24 cores composed of the wires 8.

  The thin inner layer wire 2, the first medium inner layer wire 3, the second medium inner layer wire 4, the large inner layer wire 5, the thin outer layer wire 6, the medium outer layer wire 7, and the large outer layer wire 8 are respectively It is formed on the basis of a wire having a circular cross section having a different diameter. As these wires, copper wires, copper wires plated with tin, nickel, silver, aluminum wires, various alloy wires, and the like can be used as in the prior art.

  The diameter of the wire that is the basis of the thin inner layer wire 2 is smaller than the diameter of the wire that is the basis of the thin outer layer wire 6, and the diameter of the wire that is the basis of the thin outer layer wire 6 is the basis of the medium diameter outer layer wire 7. The diameter of the wire that is smaller than the diameter of the wire and that is the basis of the medium-diameter outer layer wire 7 is smaller than the diameter of the wire that is the basis of the first medium-diameter inner layer wire 3, and the diameter of the wire that is the basis of the first medium-diameter inner layer wire 3 Is smaller than the diameter of the wire that is the basis of the second medium-diameter inner layer wire 4, and the diameter of the wire that is the basis of the second medium-diameter inner layer wire 4 is smaller than the diameter of the wire that is the basis of the large-diameter outer layer wire 8. The diameter of the wire used as the basis of the inner layer wire 5 is smaller than the diameter of the wire used as the basis of the large-diameter outer layer wire 8.

  As shown in FIG. 1, each first medium-diameter inner layer line 3 that forms the first layer 12 is located at an equal distance from the center A of the center line 11, and the adjacent first first layer 12 that forms the first layer 12. The medium-diameter inner layer wires 3 are arranged so as to be in point contact with each other and the center line 11. This contact is a point contact in the cross section of FIG. 1 and a line contact in the axial direction.

  Each of the six core inner diameter wires 5 forming the second layer 13 is partly formed between the outer peripheral surfaces of the adjacent first medium inner diameter wires 3 and 3 in the first layer 12. 16 and arranged so as to be in point contact with the two middle first inner-layer wires 3 forming the first layer 12. A single thin inner layer wire 2 is disposed between the large inner layer wire 5 and the thick inner layer wire 5 adjacent to each other in the circumferential direction of the second layer 13 as shown in FIG. That is, in the circumferential direction of the second layer 13, the large-diameter inner layer wires 5 and the small-diameter inner layer wires 2 are alternately arranged.

  The six inner diameter inner layer wires 2 forming the third layer 14 constitute the apex portion of the inner diameter wire 5 constituting the second layer 13, that is, the center A of the center line 11 and the second layer 13, respectively. It is arranged on the extended line of the line connecting the centers of the large-diameter inner layer lines 5.

  Also, as shown in FIG. 1, between the single thin inner layer wire 2 and the single thin inner layer wire 2 adjacent to each other in the circumferential direction of the third layer 14, two second medium inner layers are formed. Lines 4 and 4 are arranged. That is, in the circumferential direction of the third layer 14, two second medium-diameter inner layer wires 4, 4 are arranged between the small inner layer wires 2 and 2.

  Each of the six-core second medium-diameter inner layer wires 4 constituting the third layer 14 has outer peripheries of the large-diameter inner layer wire 5 and the small-diameter inner layer wire 2 that are partially adjacent to each other in the circumferential direction in the second layer 13. It is arranged so as to enter each valley portion 17 formed between the surfaces and to make point contact with the large-diameter inner layer wire 5 and the small-diameter inner layer wire 2 constituting the second layer 13.

  Each of the six-core large-diameter outer layer wires 8 constituting the fourth layer (outermost layer) 15 is formed between the outer peripheral surfaces of the adjacent second medium-diameter inner layer wires 4 and 4 in the third layer 14. Further, they are arranged substantially on the extended lines of the lines that enter the respective valley portions 18 and connect the center A of the center line 11 and the center of the thin inner layer wire 2 constituting the second layer 13.

  Further, in the circumferential direction of the fourth layer (outermost layer) 15, the medium-diameter outer layer wires 7 are arranged one by one on both sides of each large-diameter outer layer wire 8. That is, in the circumferential direction of the fourth layer (outermost layer) 15, the large-diameter outer layer wire 8 is sandwiched between the middle-diameter outer layer wires 7 and 7 one by one.

  Further, in the circumferential direction of the fourth layer (outermost layer) 15, a single thin outer layer wire 6 is disposed on the opposite side of the middle outer layer wire 7 from the thick outer layer wire 8. The small-diameter outer layer wire 6 is disposed so as to be located outside the small-diameter inner layer wire 2 constituting the third layer 14. That is, each thin outer layer wire 6 is substantially disposed on an extension of a line connecting the center A of the center line 11 and the center of the thin inner layer wire 2 constituting the third layer 14.

  That is, in the circumferential direction of the fourth layer (outermost layer) 15, the medium-diameter outer layer wires 7 are arranged so that every other center.

  And it can use for an electric wire etc. by coat | covering the insulating material on the outer periphery of the stranded wire conductor 1 formed as mentioned above.

  With the above-described configuration, the outer shape of the stranded wire conductor 1 is closer to a substantially circular shape than the stranded wire conductor 100 of the prior art 1. That is, the distance L1 from the center A of the center line 11 to the outermost edge B of the large-diameter outer layer line 8 that forms the outermost layer 15 and the small-diameter outer layer line 6 that forms the outermost layer 15 from the center A of the center line 11 The distance L2 to the outermost edge C is substantially the same. That is, as shown in FIG. 1, the outermost edge B, C, D of all the small-diameter outer layer wires 6, medium-diameter outer layer wires 7, and large-diameter outer layer wires 8 that form the outermost layer 15 It is formed so as to be located at a position close to a perfect circle line (two-dot chain line in FIG. 1) having a radius L1 from the center A to the outermost edge B of the large-diameter outer layer line 8.

First middle diameter d ₁ of the radially inner layer line _3, the diameter d ₂ of the small-diameter inner wire _2, second in-diameter layer wire 4 having a diameter d _3, the thick diameter d ₄ of the radially inner layer line 5 for use in the center line 11 or the _like, the diameter _{d 5} of the small-diameter outer wires 6, the diameter _{d 6} of the middle-diameter outer layer line 7, the diameter _{d 7} thick diameter outer layer line 8, for example,
d ₂ = 0.76d ₁ (1)
d ₃ = 1.02d ₁ (2)
d ₄ = 1.15d ₁ (3)
d ₅ = 0.87d ₁ (4)
d ₆ = 0.935d ₁ (5)
d ₇ = 1.06d ₁ (6)
The distance L1 from the center point A of the stranded conductor 1 to the outermost edge B of the large-diameter outer layer wire 8 and the outermost edge of the thin outer-layer wire 6 from the center point A The distance L2 to C is substantially the same, and each strand can be brought into contact with all adjacent strands.

  Since the stranded wire conductor 1 of Example 1 has the above-described structure, the following actions and effects are exhibited.

  The outer shape of the stranded conductor 1 can be made into a substantially circular shape without being compressed, and the strands 2 to 8 can be in contact with all adjacent strands 2 to 8.

  Since the outer shape of the stranded wire conductor 1 is substantially circular and can be made thinner than the stranded wire conductor 100 of the prior art 1, the insulation coating can be made thin and substantially uniform over the entire outer periphery. The amount of insulating material can be reduced, and the cost can be reduced.

Further, in the stranded wire conductor 1 of the first embodiment, the strands 6, 7, and 8 forming the outermost layer 15 are formed without being compressed and deformed, as compared with the stranded wire conductor 201 of the prior art 2. Therefore, the physical properties of the wire can be maintained high without impairing the physical properties such as the stretch properties, flexibility, and flexibility, and the highly reliable stranded wire conductor 1 can be obtained.
To do.

  Note that the stranded wire conductor 1 may be formed by compression deformation using a compression die. Even when a compression die is used in this manner, since it can be manufactured at a lower compression rate than the stranded wire conductor 201 of the conventional technique 2, the stretch characteristics and flexibility are improved as compared with the stranded wire conductor 201 of the conventional technique 2. The physical properties of the wire can be maintained high without impairing the physical properties such as flexibility and flexibility.

[Example 2]
FIG. 2 shows a second embodiment of the present invention.

  FIG. 2 is a schematic cross-sectional view cut in a direction orthogonal to the axial direction of the stranded conductor 21. In addition, the oblique line which shows the cross section of each strand was abbreviate | omitted in order to avoid the complexity of a figure.

  In the first embodiment, the thin inner layer wire (element wire) 2, the first inner diameter inner layer wire (element wire) 3, the second inner diameter inner layer wire (element wire) 4, and the thick inner layer wire (element wire). Wire) 5, thin outer layer wire (element wire) 6, medium diameter outer layer wire (element wire) 7, and large diameter outer layer wire (element wire) 8. 2, the first medium diameter inner layer wire 3 and the second medium diameter inner layer wire 4 are the same, that is, the first medium diameter inner layer wire 3 and the second medium diameter inner layer wire 4 are based on the same wire. 6 of the small diameter inner layer wire 2, the first medium diameter inner layer wire 3, the large diameter inner layer wire 5, the thin diameter outer layer wire 6, the medium diameter outer layer wire 7, and the large diameter outer layer wire 8. You may comprise by a kind.

  Since the other structure is the same as that of the first embodiment, the same reference numerals as those described above are used and the description thereof is omitted.

  The second embodiment has the same operations and effects as the first embodiment.

  Furthermore, since the second embodiment has fewer types of strands than the first embodiment, the cost can be reduced.

1,21 Twisted wire conductor 2 Thin inner layer wire (elementary wire)
3 First medium-diameter inner layer wire (elementary wire)
4 Second inner diameter inner wire (elementary wire)
5 Large diameter inner layer wire (elementary wire)
6 Thin outer layer wire (elementary wire)
7 Medium-diameter outer layer wire (elementary wire)
8 Large diameter outer layer wire (elementary wire)
11 Centerline 12 First Layer 13 Second Layer 14 Third Layer 15 Outermost Layer

In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a single core wire is a center line, and a six-core wire surrounds the center line to form a first layer, A 12-core element wire surrounds the outer periphery of the first layer to form a second layer, and an outer periphery of the second layer is surrounded by an 18-core element wire to form a third layer. A 61-core stranded wire conductor that surrounds the outer periphery with 24 core wires to form the outermost layer;
The center line is constituted by a first medium-diameter inner layer line, the first layer is constituted by six first medium-diameter inner layer lines, and the second layer is constituted by a six-core inner diameter line and a six-core inner diameter line. The lines are arranged alternately in the circumferential direction,
Wherein the third layer composed of the second in-diameter layer line 6 hearts thin inner line and 12 fibers, and the small diameter inner wire of a cardiac constituting the third layer adjacent Oite circumferentially first Two cores of the second medium diameter inner layer wire are arranged between one core inner diameter wire constituting three layers ,
The outermost layer is composed of a 6-core thin outer layer wire, a 12-core medium-diameter outer layer wire, and a 6-core large-diameter outer layer wire. The outer layer wires are arranged, and the medium diameter outer layer wires are arranged one by one so as to sandwich the large diameter outer layer wires in the circumferential direction, and further, the third layer is configured between the medium diameter outer layer wires. The thin outer layer wire is arranged to be located outside the thin inner layer wire,
The diameter of the small-diameter inner wire is smaller than the diameter of the small-diameter outer lines, the thin diameter of the outer wire is smaller than the diameter of the in-diameter outer layer wire diameter in said radially outer layer lines the first in smaller than the diameter of each of the radially inner layer line and the second in the radially inward layer line, the diameter of the first in-diameter layer line and the second in-diameter layer line is smaller than the diameter of the thick diameter outer layer line, the thick-diameter layer The diameter of the wire is smaller than the diameter of the thick inner layer wire.

According to a second aspect of the invention, the stranded conductor according to claim 1, wherein the diameter of the front the first in-diameter layer wire is characterized in that less than the diameter of the second in-diameter layer line .

According to a third aspect of the invention, the stranded conductor of claim 1, wherein the diameter of the first in-diameter layer wire is characterized in that it is the same as the diameter of the second in-diameter layer line .

Claims (4)

A single-core element wire is used as a center line, and a six-core element wire surrounds the center line to form a first layer, and a twelve-core element wire surrounds the outer periphery of the first layer. The outer periphery of the second layer is surrounded by 18 strands to form a third layer, and the outer periphery of the third layer is surrounded by 24 strands to form the outermost layer 61. A core stranded conductor,
The center line is constituted by a first medium-diameter inner layer line, the first layer is constituted by six first medium-diameter inner layer lines, and the second layer is constituted by a six-core inner diameter line and a six-core inner diameter line. The lines are arranged alternately in the circumferential direction,
The third layer is composed of six core inner diameter wires and twelve second inner diameter inner core wires, and the one core inner diameter wire and one core inner diameter wire that are adjacent in the circumferential direction. The second medium-diameter inner layer wire having two cores is arranged between
The outermost layer is composed of a 6-core thin outer layer wire, a 12-core medium-diameter outer layer wire, and a 6-core large-diameter outer layer wire. The outer layer wires are arranged, and the medium-diameter outer layer wires are arranged one by one so as to sandwich the large-diameter outer layer wires in the circumferential direction, and further, between the medium-diameter outer layer wires and between the small-diameter inner layer wires. The thin outer layer wire is arranged so as to be located outside,
The diameter of the wire that is the basis of the thin inner layer wire is smaller than the diameter of the wire that is the basis of the thin outer layer wire, and the diameter of the wire that is the basis of the thin outer layer wire is the base of the medium diameter outer layer wire. The diameter of the wire that is the basis of the medium-diameter outer layer wire is smaller than the diameter of the wire that is the basis of the first medium-diameter inner layer wire and the second medium-diameter inner layer wire, The diameters of the wires that are the basis of the 1 medium-diameter inner layer wire and the second medium-diameter inner layer wire are smaller than the diameter of the wire that is the basis of the large-diameter outer layer wire, and the diameter of the wire that is the basis of the large-diameter outer layer wire Is smaller than the diameter of the wire used as the base of the said large diameter inner layer wire, The twisted wire conductor characterized by the above-mentioned.   2. The stranded wire conductor according to claim 1, wherein a diameter of a wire that is a base of the first medium diameter inner layer wire is smaller than a diameter of a wire that is a base of the second medium diameter inner layer wire.   The stranded wire conductor according to claim 1, wherein a diameter of a wire that is a basis of the first medium diameter inner layer wire is the same as a diameter of a wire that is a basis of the second medium diameter inner layer wire.   The stranded wire conductor according to any one of claims 1 to 3, wherein the outermost layer is formed by compressive deformation.

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