JP2009266670A - Twisted wire conductor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a twisted wire conductor having thirty seven cores, whose external contour is adapted to have a substantially true circle through compression of wires at a low compression ratio or without compression. <P>SOLUTION: In the twisted conductor 1 having thirty seven cores, a single core wire is used as a center wire 11 and the center wire 11 is surrounded by six core wires to form a first layer 12. The outer periphery of the first layer 12 is surrounded by twelve core wires to form a second layer 13. The outer periphery of the second layer 13 is surrounded by eighteen core wires to form an outermost layer 14. The diameter of a wire material as a base of the twelve core wires among eighteen cores constituting the outermost layer 14 and the six core wires among twelve cores constituting the second layer 13 is made identical with the diameter of a wire material as a base of the center wire 11 and the elemental wires constituting the first layer 12. The diameter of a wire material as a base of the six core wires constituting the outermost layer 14 other than the above described ones and the six core wires constituting the second layer 13 other than the above described ones is made smaller than the diameter of a wire material as a base of the center wire 11 and the elemental wires constituting the first layer 12. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a stranded wire conductor, and more particularly, to a stranded wire conductor constituted by a 37-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. 5, a stranded conductor composed of 37 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 101, a second layer 104 formed by surrounding the outer periphery of the first layer 103, and an outer periphery of the second layer 104. The stranded wire conductor 100 is constituted by a third layer (outermost layer) 105 formed by covering 18 strands 101. 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 has a circular cross section and is formed from a wire having the same diameter, the outer shape of the cross section of the 37-core concentric strand arrangement stranded conductor 100 constituted by the strands 101 is used. As shown in FIG. 5, the shape approximates a hexagonal shape and does not approximate a round shape. Hereinafter, the above-described stranded wire conductor 100 is referred to as Conventional Technology 1.

  Moreover, the said stranded wire conductor 100 is generally used for an electric wire etc. as a covered wire which coat | covered the insulating material 110 on the outer peripheral part, 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, and as shown in FIG. 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, the compression ratio is usually about 4% ((1−inner diameter of compression die / outer diameter when wires are collected). ) × 100). 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.

  Accordingly, the present invention provides a stranded wire composed of 37 strands, the strand being compressed at a lower compressibility than the stranded 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 37-core stranded conductor in which the outer periphery of the first layer is surrounded by 12 cores to form a second layer, and the outer periphery of the second layer is surrounded by 18 cores to form the outermost layer. There,
The center line is composed of a first medium diameter line, the first layer is composed of six first medium diameter lines, and the second layer is composed of a six core thin diameter line and a six core large diameter line in the circumferential direction. The outermost layer is composed of 6 cores of thin diameter wires and 12 cores of the second medium diameter wire, and the one core of thin diameter wires and one core of the core adjacent to each other in the circumferential direction. Two cores of the second medium diameter wire are arranged between the thin wire,
The diameter of the wire used as the basis of the thin wire is smaller than the diameter of each of the wires used as the base of the first medium wire, the second medium wire, and the thick wire, and becomes the base of the thick wire. A diameter of the wire is a stranded conductor characterized by being larger than the diameter of each of the wires that are the basis of the thin wire, the first medium wire, and the second medium wire.

  The invention according to claim 2 is the stranded conductor according to claim 1, wherein the diameter of the wire that is the basis of the first medium-diameter wire is smaller than the diameter of the wire that is the basis of the second medium-diameter wire. It is characterized by.

  According to a third aspect of the present invention, in the stranded conductor according to the first aspect, the diameter of the wire that is the basis of the first medium-diameter wire is the same as the diameter of the wire that is the basis of the second medium-diameter wire. It is characterized by this.

  The invention according to claim 4 is the twisted wire conductor according to claim 1, 2 or 3, wherein the distance from the center point of the center line to the outermost edge of the thin-diameter wire constituting the outermost layer, and the center The distance from the center point of the line to the outermost edge of the second medium diameter line constituting the outermost layer is the same.

  A fifth aspect of the present invention is the stranded wire conductor according to any one of the first to fourth aspects, wherein the outermost layer is formed by compression deformation.

  According to the present invention, the outer shape of the stranded wire conductor can be made into a substantially perfect circle shape without being compressed and deformed or at a compression rate lower than that of the stranded wire conductor 201 of the prior art 2.

  Thereby, when compression deformation does not occur, in the present invention, the twisted wire conductor 201 formed by compression according to the prior art 2 is not passed through the compression die, that is, the outer layer wire 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.

Moreover, the maximum outer diameter can be made thinner than the stranded wire conductors 100 and 201 of the prior arts 1 and 2.
As described above, the outer shape of the stranded wire conductor is a substantially circular shape and, as described above, can be made thinner than the stranded wire conductors 100 and 201 of the prior arts 1 and 2, thereby reducing the coating thickness of the insulating material. The entire circumference can be made thin and can be made substantially uniform, the amount of insulating material can be reduced, and the cost can be reduced.

  In addition, according to the invention described in claim 3, since it can be manufactured with fewer types of wire than the invention described in claim 2, the manufacturing cost can be kept low.

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

1 to 3 show a first embodiment 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.

  As shown in FIG. 1, the stranded conductor 1 shown in Example 1 is composed of a total of 37 strands, and the strands include a thin wire (wire) 2 and a first medium wire ( (Element wire) 3, second medium diameter wire (element wire) 4, and thick wire (element wire) 5.

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

  The thin wire 2 is formed based on a first wire 22 having a circular cross section (round shape), and the first medium diameter wire 3 is formed based on a second wire 23 having a circular cross section (round shape). The second medium diameter wire 4 is formed on the basis of the third wire rod 24 having a circular cross section (round shape), and the large diameter wire 5 is formed on the basis of the fourth wire rod 25 having a circular cross section (round shape). It has been done.

  The diameter of the first wire 22 is smaller than the diameter of the second wire 23, the diameter of the second wire 23 is smaller than the diameter of the third wire 24, and the diameter of the third wire 23 is that of the fourth wire 25. It is formed smaller than the diameter.

  As the wires 22 to 25, a copper wire, a copper wire plated with tin, nickel, silver, an aluminum wire, various alloy wires, or the like can be used as in the prior art.

  As shown in FIG. 1, each first medium diameter 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 line 12 that forms the first layer 12. They are arranged so as to make point contact with each other of the medium diameter wires 3 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 large-diameter wires 5 forming the second layer 13 is partly formed between the outer peripheral surfaces of the adjacent first medium-diameter wires 3 and 3 in the first layer 12. It is arranged so as to be in point contact with the two first middle diameter wires 3 forming the first layer 12. And between the large diameter line 5 and the large diameter line 5 which adjoin the circumferential direction of the 2nd layer 13, as shown in FIG. That is, the thick wire 5 and the thin wire 2 are alternately arranged in the circumferential direction of the second layer 13.

  The six-core thin diameter wires 2 forming the outermost layer 14 are respectively apexes of the large diameter wire 5 forming the second layer 13, that is, the center A of the center line 11 and the thick wire forming the second layer 13. It is arranged on an extension of a line connecting the centers of the radial lines 5.

  Between the single thin wire 2 and the single thin wire 2 adjacent to each other in the circumferential direction of the outermost layer 14, as shown in FIG. Has been placed. That is, in the circumferential direction of the outermost layer 14, two second medium diameter wires 4 and 4 are arranged between the thin wire 2 and 2.

  Each of the six second medium-diameter wires 4 constituting the outermost layer 14 is formed between the outer peripheral surfaces of the large-diameter wire 5 and the thin-diameter wire 2, each part of which is adjacent in the circumferential direction in the second layer 13. Each of the valleys 17 is arranged so as to be in point contact with the large diameter wire 5 and the small diameter wire 2 forming the second layer 13.

  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 thin diameter wire 2 that forms the outermost layer 14 and the outermost edge of the second medium diameter wire 4 that forms the outermost layer from the center A of the center line 11. The distance L2 to the outer edge C is formed to be substantially the same. That is, the outermost edge ends B and C of all the thin diameter wires 2 and the second medium diameter wires 4 that form the outermost layer 14 are formed from the center A of the center line 11 to the outermost edge of the thin diameter wire 2 as shown in FIG. It is formed so as to be located at a position close to a perfect circle having a radius L1 to the outer edge B.

The diameter _{d 1} of the first in a longitude line 3 used for the center line 11 or the like, the diameter _{d 2} of the thin line 2, the second in diameter line 4 having a diameter _{d 3,} the diameter _{d 4} of the thick diameter line 5, for example,
d ₂ = 0.76d ₁ (1)
d ₃ = 1.02d ₁ (2)
d ₄ = 1.15d ₁ (3)
The distance L1 from the center point A of the stranded conductor 1 to the outermost edge B of the thin wire 2 and the outermost edge of the second medium diameter wire 4 from the center A The distance L2 to C is substantially the same, and each strand can be brought into contact with all adjacent strands.

Next, a specific application example of the first embodiment will be described.
In order to satisfy the relationships of the above formulas (1) to (3), the diameter d _{2 that} is the basis of the thin wire ₂ is 0.152 mm and the diameter d _{1 that} is the basis of the first medium diameter wire 3 is the wire 23 of 0.200 mm, a wire 24 of diameter _{d 3} which is the basis of the second in diameter line 4 is 0.204 mm, the diameter _{d 4} of the group of thick diameter line 5 is a wire 25 of 0.230mm using Thus, a twisted wire conductor 1 was obtained as a batch twisted wire with a twist pitch of 18.7 mm and non-compressed. In addition, the material of the wire materials 22-25 is a tin plating annealed copper wire.

  When the prototype 1 was observed with a microscope, each strand had an adjacent strand and a plurality of contact points, and the diameter of the prototype 1 was 1.261 mm. The average value of the elongation rates of the wires 2 and 4 constituting the outermost layer 14 was 21.8%.

The maximum in the case where the diameter d ₁ which is the basis of the first in a longitude line 3 is the center line 11 by using the same wire as the wire 23 of 0.200 mm, was prepared the stranded conductor 100 of the prior art 1 Since the diameter is 7 × d _1, it is 1.400 mm.

Further, the diameter _{d 1} which is the basis of the first in a longitude line 3 is the center line 11 by using the same wire as the wire 23 of 0.200 mm, compression ratio of 4.0%, the conventionally twist pitch 18.7mm The one in which the stranded wire conductor 201 of Technology 2 was created was designated as Comparative Product 1. The diameter of the comparative product 1 was 1.298 mm, and the average value of the elongation rate of the 18 cores constituting the outermost layer was 4.6%.

  Thus, the diameter of the prototype 1 of this example is about 10% smaller than the diameter of the stranded wire conductor 100 of the prior art 1 and about 2.8% smaller than the diameter of the stranded wire conductor 201 of the prior art 2. Can be

  Moreover, the growth rate of the prototype 1 of this example is higher than that of the comparative product 1, and it can be seen that the prototype 1 has higher physical properties and higher quality than the comparative product 1. It was. This is because the comparative product 1 is compression-molded, whereas the prototype 1 is molded without being compressed.

However, in the above comparison, the conductor cross-sectional areas of the prototype 1 and the conventional stranded conductors 100 and 201 are different. Therefore, if the diameter d ₁ of the first medium diameter wire 3 used for the center line 11 or the like is
d = 0.963d ₁ (4)
When the wire having the diameter d having the relational expression is used, the cross-sectional areas of the prototype 1 and the stranded wire conductor 100 of the prior art 1 can be the same.

  The maximum outer diameter of the stranded wire conductor 100 having the same cross-sectional area as that of the prototype 1 is 1.400 × 0.963 = 1.348 mm.

  Further, the diameter of the stranded wire conductor 201 (compression ratio 4%) having the same cross-sectional area as that of the prototype 1 is 1.348 × (100−4) /100=1.294 mm.

  Thus, even when the conductor cross-sectional areas are the same, the diameter of the prototype 1 of this example is about 6.5% of the diameter of the stranded conductor 100 of the prior art 1, and the stranded wire of the prior art 2 The diameter of the conductor 201 can be reduced by about 2.6%.

  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.

  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 perfect circle shape without being compressed, and the strands 2 to 5 can be in contact with all the neighboring strands 2 to 5.

  The outer shape of the stranded wire conductor 1 is a substantially circular shape and, as described above, can be made thinner than the stranded wire conductors 100 and 201 of the prior art 1 and 2, so that the insulation coating can be applied over the entire outer periphery. Can be made thin and substantially uniform, the amount of insulating material can be reduced, and the cost can be reduced.

Moreover, since the strands 2 and 4 which form the outermost layer 14 are formed without compressive deformation compared with the strand wire conductor 201 of the prior art 2, the strand wire conductor 1 of the present Example 1 is formed. The physical properties of the wire can be maintained high without impairing physical properties such as stretch properties, flexibility, and flexibility, and a highly reliable stranded wire conductor 1 can be obtained.
To do.

Next, a method for manufacturing the stranded wire conductor 1 using a compression die will be described as a reference.
The stranded wire conductor 1 of the first embodiment is manufactured by using a stranded wire machine 32 having a concentrator 31 as shown in FIG. A compression die 33 is provided in the concentrator 31, and the eye plate 35 is provided behind the concentrator 31. As shown in FIG. 3, the eye plate 35 has 37 wire passage holes 35 a, 35 b, 35 c, and 35 d at predetermined intervals on a circle centered on the central axis of the compression die 33. It is formed through the front and back.

  In addition, a wire rod supply unit 36 is disposed behind the eye plate 35, and the wire rod supply unit 36 has a base of the small diameter wire 2, the first medium diameter wire 3, the second medium diameter wire 4, and the large diameter wire 5. A first wire rod 22, a second wire rod 23, a third wire rod 24, and a fourth wire rod 25 having a circular cross section (round shape) are supplied.

  First, as shown in FIG. 2A, the wire rods 22, 24, 25 are supplied from the wire rod supply section 36 to the wire rod passage holes 35a, 35c, 35d of the eye plate 35. At this time, the wire rods 22, 24, and 25 are supplied to the 18 wire rod passage holes 35a and 35c in the outermost peripheral direction and the twelve wire rod passage holes 35a and 35d provided inside thereof.

  As shown in FIG. 3, the first wire 22 is supplied to the wire passing hole 35a corresponding to the position of the thin wire 2 in FIG. 1, and the third wire 24 is shown in FIG. As shown in FIG. 3, the fourth wire 25 is supplied to the wire passing hole 35d corresponding to the position of the thick wire 5 in FIG. 1, as shown in FIG. Supplied with.

  The wire rods 22, 24, and 25 that have passed through the wire rod passage holes 35 a, 35 c, and 35 d are gathered evenly in the center direction of the eye plate 35, that is, the center direction of the compression die 33.

  The wire rods 22, 24, and 25 gathered together are supplied to the stranded wire machine 32. When the wire rods 22, 24, 25 are supplied to the stranded wire machine 32, as shown in FIG. 2 (a), the lead wires 40 are simultaneously placed so as to be positioned at the center of the circle formed by the wire rods 22, 25. Supply.

  The lead wire 40 has the same diameter as the outer diameter of the first layer 12 that is the inner diameter of the second layer 13, that is, the diameter that is three times the diameter of the first medium diameter wire 3. Moreover, the length of the lead wire 40 should just be shorter than the length of the strands 2, 4, and 5, and the thing of 150 mm was used in the present Example. The material of the lead wire 40 is not limited, but is preferably the same material as that of the wire rods 22, 24, and 25.

  The wires 22, 24, and 25 pass between the lead wire 40 and the compression die 33 while being arranged in a predetermined arrangement, and are twisted in one direction by the twisting machine 32. In addition, the compression rate by the compression die 33 can be set arbitrarily, and the compression die 33 may not be used when compression molding is not performed. The twist pitch is arbitrarily set.

  The wire rods 22, 24, and 25 are compressed and deformed by the compression die 33 and the lead wire 40 to become the thin wire 2, the second medium wire 4, and the thick wire 5, thereby forming the second layer 13 and the outermost layer 14. To do.

  Next, as shown in FIG. 2B, the second wire 23 is supplied from the wire supply unit 36 to the wire passing hole 35 b of the eye plate 35. At this time, the wire rod 23 is supplied to one wire rod passage hole 35b in the central portion and six wire rod passage holes 35b provided outside thereof. Note that the wire rods 22, 24, and 25 are also continuously supplied from the wire rod supply unit 19 to the wire rod passage holes 35a, 35c, and 35d of the eye plate 35 as described above.

  As shown in FIG. 2, the wire 23 is supplied to the wire passage hole 35 b, and the wire 23 that has passed through the wire passage hole 35 b is evenly moved in the center direction of the eye plate 35, that is, the center direction of the compression die 33. Collected.

  The leading edge of the collected wire 23 is connected to the rear end portion of the lead wire 40 by adhesion or the like, and the collected wire 23 is supplied to the place where the lead wire 40 is located.

  The supplied wire material 23 is twisted in one direction by a twisting machine 32 to become the first medium-diameter wire 3 and form the center line 12 and the first layer 13.

As described above, the stranded wire conductor 1 using the compression die is continuously formed. In addition, when the stranded wire conductor 1 is manufactured without using the compression die and without being compressed and deformed, the compression die 33 and the lead wire 40 are used. The same manufacturing method as above is used.

FIG. 4 shows a second embodiment of the present invention.
FIG. 4 is a schematic cross-sectional view cut in a direction orthogonal to the axial direction of the stranded conductor 41. 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 wire (element wire) 2, the first medium diameter wire (element wire) 3, the second medium diameter wire (element wire) 4, and the large diameter wire (element wire) 5. Although four types of strands are used, the first medium diameter line 3 and the second medium diameter line 4 are the same as in the second embodiment, that is, the first medium diameter line 3 and the second medium diameter line 4 are the same. The diameter wire 4 may be formed on the basis of the same second wire rod 23 and may be constituted by three types of the thin diameter wire 2, the first medium diameter wire 3, and the large diameter wire 5.

  Other configurations and manufacturing methods of the stranded wire conductor 21 of the second embodiment are the same as those of the first embodiment.

The stranded wire conductor 21 of 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.

The cross-sectional schematic diagram cut | disconnected in the direction orthogonal to the axial direction of the strand wire conductor of Example 1 in this invention. Schematic which shows the manufacturing method of the strand wire conductor in this invention. The front view of the eyeplate used at the time of manufacture of the strand wire conductor in this invention. The cross-sectional schematic diagram cut | disconnected in the direction orthogonal to the axial direction of the strand wire conductor of Example 2 in 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.

Explanation of symbols

1, 41 Stranded wire conductor 2 Thin wire (elementary wire)
3 First medium diameter wire (elementary wire)
4 Second medium diameter wire (elementary wire)
5 Thick wire (elementary wire)
22, 23, 24, 25 Wire
11 Center line 12 1st layer 13 2nd layer 14 Outermost layer

Claims (5)

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. A 37-core stranded conductor forming an outermost layer by forming an outermost layer by forming a layer and surrounding an outer periphery of the second layer with 18 core wires;
The center line is composed of a first medium diameter line, the first layer is composed of six first medium diameter lines, and the second layer is composed of a six core thin diameter line and a six core large diameter line in the circumferential direction. The outermost layer is composed of 6 cores of thin diameter wires and 12 cores of the second medium diameter wire, and the one core of thin diameter wires and one core of the core adjacent to each other in the circumferential direction. Two cores of the second medium diameter wire are arranged between the thin wire,
The diameter of the wire used as the basis of the thin wire is smaller than the diameter of each of the wires used as the base of the first medium wire, the second medium wire, and the thick wire, and becomes the base of the thick wire. A stranded wire conductor characterized in that the diameter of the wire is larger than the diameter of each of the wires that are the basis of the thin wire, the first medium wire, and the second medium wire.   2. The stranded wire conductor according to claim 1, wherein a diameter of a wire that is a base of the first medium diameter wire is smaller than a diameter of a wire that is a base of the second medium diameter wire.   The stranded wire conductor according to claim 1, wherein a diameter of a wire that is a basis of the first medium diameter wire is the same as a diameter of a wire that is a basis of the second medium diameter wire.   The distance from the center point of the center line to the outermost edge of the thin line constituting the outermost layer, and the center point of the center line to the outermost edge of the second medium diameter line constituting the outermost layer The stranded wire conductor according to claim 1, wherein the distances of the stranded wires are the same.   The stranded wire conductor according to any one of claims 1 to 4, wherein the outermost layer is formed by compressive deformation.

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