JP6209187B2 - Twisted conductor - Google Patents

Description

  The present invention relates to a stranded conductor.

  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, aluminum, or various alloys is used.

  For example, as shown in FIG. 10, a stranded wire conductor composed of 19 strands generally has a single strand 102 at the center of the stranded wire conductor 101 as a core, and its periphery has 6 strands. The strand 103 is covered to form an inner layer, and the outer periphery is covered with 12 strands 104 to form an outer layer, which is twisted in the same direction.

  Since the strands 102, 103, 104 are all circular in cross section and have the same diameter, when the strands 102, 103, 104 are arranged in a standard core wire arrangement to form the stranded conductor 101, the outer peripheral shape thereof As shown in FIG. 10, the shape approximates a hexagonal shape and does not approximate a round shape. Hereinafter, this is referred to as Prior Art 1.

  The stranded wire conductor 101 is generally used as an electric wire or the like (covered wire) after covering the outer peripheral portion with an insulating material 106. The cross-sectional shape of the covered wire is desired to be a substantially perfect circle shape. On the other hand, it is desirable that the insulating material 106 is coated substantially uniformly on the outer periphery of the stranded wire conductor 101 in terms of pressure resistance. Therefore, the cross-sectional shape of the stranded wire conductor is desired to be a perfect circle.

  Further, the reduction in the amount of the insulating material 106 containing petroleum as a main component is very important from the viewpoint of effective use of resources, and a reduction in the diameter of the stranded wire conductor is required.

  However, when the cross-sectional shape of the stranded wire conductor 101 is a hexagon and the cross-sectional shape of the covered wire is a perfect circle, the thickness of the insulating material 106 where the cross-sectional shape of the stranded wire conductor 101 is located in the vicinity of the apex of the hexagon. The thickness of the insulating material 106 increases from the vertex to the side of the hexagon, and the thickness of the insulating material 106 becomes uneven. Further, in order to prevent a breakdown voltage failure, it is necessary to secure a certain thickness or more for the insulating material 106 located at the apex of the hexagon. For this reason, the coated wire cannot be made thinner than the diameter from the center of the stranded wire conductor 101 to its outermost end, and there is a problem that there is a limit to reducing the diameter and weight of the coated wire.

  Further, the insulating material 106 located on the side is excessive from the viewpoint of performance, but it is necessary to make the cross section a perfect circle, so that there is a limit in reducing the amount of the insulating material 106. There is.

  Further, when the cross-sectional shape of the stranded wire conductor 101 is a hexagon, there is a problem that the stranded wire conductor 101 may be damaged when the covering material 106 is stripped when the coated wire is subjected to terminal processing.

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

  As a means for solving this problem, as shown in FIG. 11, seven or more second strands 202 thinner than the center line 201 are arranged on the outer periphery of one center line 201 to form an inner layer 203. On the outer periphery, the second strand 202 and the third strand 204 thinner than the second strand 202 are alternately arranged to form the outer layer 205. The second strand 202 and the third strand constituting the outer layer 205 A stranded conductor 210 having the same number 204 is known (see Patent Document 1). Hereinafter, this is referred to as Conventional Technology 2.

JP 2012-119073 A

  In the stranded wire conductor 210 of Prior Art 2, the outer layer 205 is formed by alternately arranging the second strands 202 and the third strands 204 that constitute the inner layer 203, thereby forming the inner layer 203. In the case of the seven second strands 202, the third strand 204 can be in contact with the second strand 202, and is substantially circular without compressing the stranded conductor 210. Can be configured.

  However, as shown in FIG. 11, when the inner layer 203 is composed of eight or more second strands 202, the third strand 204 is different from the second strand 202 constituting the inner layer 203. There is a problem that the contact cannot be made and the denseness is impaired.

  As the number of the second strands 202 in the inner layer 203 increases, this denseness is greatly impaired, and twist breakage is likely to occur.

  As a result, the thickness of the insulating material becomes non-uniform, and there is a risk of causing trouble in terminal processing such as biting of the insulating material, and the elongation characteristics, flexibility, flexibility, etc. of the strands 202 and 203 constituting the outer layer 205 There is a problem that the physical properties of the glass are impaired.

  Therefore, an object of the present invention is to provide a stranded wire conductor capable of making the cross-sectional shape of the stranded wire conductor closer to a perfect circle shape without compressing the strand than the above prior art. To do.

In order to solve the above-mentioned problem, the invention according to claim 1 includes an outermost layer composed of a plurality of medium-diameter wires and a plurality of thin-diameter wires, and a plurality of large-diameters positioned inside the outermost layer. Having an outer layer composed of two layers of a first outer layer composed of wires,
The diameter of the small-diameter wire, the in less than the diameter of the radial line, the diameter of the in meridian is less than the diameter of the thick diameter line,
The number of the medium diameter wires constituting the outermost layer, the number of the thin diameter wires constituting the outermost layer, and the number of the large diameter wires constituting the first outer layer are configured with the same number,
The outermost layer is configured by alternately arranging one medium-diameter wire and one thin-diameter wire.

  According to a second aspect of the present invention, in the first aspect of the invention, the medium-diameter wire constituting the outermost layer is disposed in a valley portion between the large-diameter wires adjacent to the first outer layer. It is characterized by that.

The invention according to claim 3 is the invention according to claim 1 or 2, wherein the number of the large-diameter wires is eight or more .

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

  According to the present invention, the outermost layer composed of a plurality of medium-diameter wires and the plurality of thin-diameter wires, and the first outer layer composed of a plurality of large-diameter wires and positioned inside the outermost layer. The number of the medium-diameter wires constituting the outermost layer, the number of the thin-diameter wires constituting the outermost layer, and the number of the large-diameter wires constituting the first outer layer are the same. The cross-sectional shape of the stranded wire conductor is a substantially perfect circle shape, by arranging the outermost layer by alternately arranging the one medium diameter wire and one thin diameter wire, and Each strand constituting the stranded conductor can be in contact with all adjacent strands.

  Further, even when the first outer layer is composed of eight or more large-diameter wires, each strand can be in contact with all adjacent strands, which is more dense than the stranded wire conductor 201 of the prior art 2. Can be increased.

  Thereby, twist breakage hardly occurs, the thickness of the insulating material can be made uniform, and workability such as terminal processing can be improved. Furthermore, physical properties such as elongation characteristics, flexibility, and flexibility can be improved as compared with the stranded wire conductor 201 of the prior art 2.

The cross-sectional view of the stranded wire conductor which concerns on Example 1 of this invention. The cross-sectional view which shows an example of the stranded wire conductor which concerns on Example 2 of this invention. The cross-sectional view which shows the other examples of the twisted wire conductor which concerns on Example 2 of this invention. The cross-sectional view which shows the other examples of the twisted wire conductor which concerns on Example 2 of this invention. The cross-sectional view which shows the other examples of the twisted wire conductor which concerns on Example 2 of this invention. The cross-sectional view which shows the other examples of the twisted wire conductor which concerns on Example 2 of this invention. The cross-sectional view which shows an example of the stranded wire conductor which concerns on Example 3 of this invention. The cross-sectional view which shows the other examples of the twisted wire conductor which concerns on Example 3 of this invention. The cross-sectional view which shows the other examples of the twisted wire conductor which concerns on Example 3 of this invention. The cross-sectional view of the stranded wire conductor of the prior art 1. FIG. The cross-sectional view of the stranded wire conductor of the prior art 2. FIG.

  An embodiment 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 wire conductor 1 according to Example 1 of the present invention, and the oblique lines indicating the cross section of each element wire are omitted in order to avoid complexity of the figure. .

  The stranded conductor 1 has an inner layer 2 and an outer layer 3, and the outer layer 3 is composed of two layers, a first outer layer 4 provided outside the inner layer 2 and an outermost layer 5 provided outside the first outer layer 4. ing.

  The inner layer 2 is composed of one center line (element wire) 11.

  As shown in FIG. 1, the first outer layer 4 has eight thick wires (element wires) 12 arranged on the same circumference, and the center line 11 is covered with eight thick wires 12. Each large diameter wire 12 is in contact with the center line 11, and adjacent large diameter wires 12 and 12 are in contact with each other.

  As shown in FIG. 1, the outermost layer 5 is composed of eight medium-diameter wires (element wires) 13 and eight thin-diameter wires (element wires) 14, and one medium-diameter wire 13 and one wire. Are arranged alternately so as to cover the first outer layer 4.

  Thus, the number of the large diameter wires 12 constituting the first outer layer 4, the number of the medium diameter wires 13 constituting the outermost layer 5, and the number of the thin diameter wires 14 constituting the outermost layer 5 are all the same number. Are set to eight.

  The medium diameter wire 13 is located in the valley 15 of the adjacent large diameter wires 12 and 12. Further, the medium diameter wire 13 comes into contact with the adjacent small diameter wires 14 and 14 and the large diameter wire 12 located inside.

  The center of the thin wire 14 is positioned on an extension line connecting the center A of the center wire 11 and the center of the thick wire 12. Further, the small diameter wire 14 comes into contact with the adjacent medium diameter wires 13 and 13 and the large diameter wire 12 located inside thereof.

  As a wire rod used as the basis of each element 11, 12, 13, and 14, as in the past, a copper wire, a copper wire plated with tin, nickel, silver, etc., an aluminum wire, various alloy wires, and Insulated coating such as enameled wire and formal wire can be used. The same material may be used for the material of each strand 11, 12, 13, and 14, and a different material may be used.

  The diameter d1 of the wire that is the basis of the center line 11 is set larger than the diameter d2 of the wire that is the basis of the thick wire 12, and the diameter d2 of the wire that is the basis of the thick wire 12 is the base of the medium diameter wire 13. The diameter d3 of the wire used as the basis of the medium diameter wire 13 is set larger than the diameter d4 of the wire used as the basis of the thin wire 14.

  In the first embodiment, the wire that is the basis of each of the strands 11, 12, 13, and 14 in which the relationship of d1 = 1.613 × d2, d3 = 0.94 × d2, and d4 = 0.705 × d2 is established. Using.

  Further, the cross-sectional shape of the stranded wire conductor 1 is substantially circular, that is, the distance L1 from the center A of the center line 11 to the outermost edge B of the medium diameter wire 13 and the center wire 11 to the thin wire 14 is formed such that the distance L2 to the outermost edge C is the same.

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

  The cross-sectional shape of the stranded wire conductor 1 is a substantially circular shape, and has a dense structure in which the strands 11, 12, 13, and 14 can abut on all the adjacent strands 11, 12, 13, and 14. be able to.

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

  As shown in FIG. 11, in the stranded wire conductor 210 of the prior art 2, when the inner layer 203 is composed of eight second strands 202, the third strand 204 is the first strand that constitutes the inner layer 203. However, in the stranded wire conductor 1 of the present invention, all the strands 11, 12, 13, 14 are in contact with all the adjacent strands 11, 12, 13, 14. The denseness is not impaired, and twisting is not easily caused. In addition, the thickness of the insulating material can be made uniform, and processability such as terminal processing can be improved.

  Further, since the outer shape of the stranded conductor 1 can be made into a substantially circular shape without passing the strand through a compression die, physical properties such as stretch characteristics, flexibility, and flexibility are not impaired. The physical properties of the strands can be maintained, high quality can be obtained, and it can be effectively used in the field of electric wires for automobiles, the field of acoustic wires, and the like.

[Example 2]
In the first embodiment, the number of large diameter wires 12 constituting the first outer layer 4, the number of medium diameter wires 13 constituting the outermost layer 5, and the number of thin diameter wires 14 constituting the outermost layer 5 are as follows: Although all are set to the same number of eight, the number of large-diameter wires 12 constituting the first outer layer 4, the number of medium-diameter wires 13 constituting the outermost layer 5, and the thin-diameter wire 14 constituting the outermost layer 5 are set. The number of can be set to an arbitrary number as long as they are all the same number and 8 or more.

  For example, as shown in FIG. 2, the number of large-diameter wires 12 constituting the first outer layer 4, the number of medium-diameter wires 13 constituting the outermost layer 5, and the number of thin-diameter wires 14 constituting the outermost layer 5. In the case of the nine stranded wire conductors 21 having the same number, the strands satisfying the relationships d1 = 1.923 × d2, d3 = 0.9 × d2, d4 = 0.65 × d2. 11, 12, 13, 14 is used as a base material, and the cross-sectional shape of the stranded wire conductor 21 is made substantially circular, and all the strands 11, 12, 13, 14 are adjacent to each other. It can abut against the wires 11, 12, 13, 14.

  Further, as shown in FIG. 3, the number of large diameter wires 12 constituting the first outer layer 4, the number of medium diameter wires 13 constituting the outermost layer 5, and the number of thin diameter wires 14 constituting the outermost layer 5. In the case of the stranded wire conductors 22 having the same number of ten wires, each strand satisfying the relationship of d1 = 2.236 × d2, d3 = 0.87 × d2, and d4 = 0.625 × d2. 11, 12, 13, 14 is used as a base material, and the cross-sectional shape of the stranded wire conductor 22 is made into a substantially perfect circle shape, and all the strands 11, 12, 13, 14 are adjacent to each other. It can abut against the wires 11, 12, 13, 14.

  Also, as shown in FIG. 4, the number of large diameter wires 12 constituting the first outer layer 4, the number of medium diameter wires 13 constituting the outermost layer 5, and the number of thin diameter wires 14 constituting the outermost layer 5. In the case of 11 stranded wire conductors 23 having the same number, the strands satisfying the relationship of d1 = 2.549 × d2, d3 = 0.845 × d2, and d4 = 0.605 × d2. 11, 12, 13, 14 is used as a base, and the cross-sectional shape of the stranded conductor 23 is made to be a substantially perfect circle, and all the strands 11, 12, 13, 14 are adjacent to each other. It can abut against the wires 11, 12, 13, 14.

  In addition, as shown in FIG. 5, the number of large diameter wires 12 constituting the first outer layer 4, the number of medium diameter wires 13 constituting the outermost layer 5, and the number of thin diameter wires 14 constituting the outermost layer 5. In the case of twelve stranded conductors 24 having the same number, the strands satisfying the relationship of d1 = 2.864 × d2, d3 = 0.825 × d2, d4 = 0.59 × d2. 11, 12, 13, 14 is used as a base material, and the cross-sectional shape of the stranded wire conductor 24 is made substantially circular, and all the strands 11, 12, 13, 14 are adjacent to each other. It can abut against the wires 11, 12, 13, 14.

  In addition, as shown in FIG. 6, the number of large-diameter wires 12 constituting the first outer layer 4, the number of medium-diameter wires 13 constituting the outermost layer 5, and the number of thin-diameter wires 14 constituting the outermost layer 5. In the case of the stranded wire conductors 25 having the same number of all 13, the strands satisfying the relationships d1 = 3.178 × d2, d3 = 0.8 × d2, and d4 = 0.58 × d2. 11, 12, 13, 14 is used as a base, and the cross-sectional shape of the stranded wire conductor 25 is made substantially circular, and all the strands 11, 12, 13, 14 are adjacent to each other. It can abut against the wires 11, 12, 13, 14.

  Since other structures are the same as those of the first embodiment, description thereof is omitted.

  Also in the second embodiment, the same operational effects as those of the first embodiment can be exhibited.

[Example 3]
In the first and second embodiments, the inner layer 2 is composed of the center line 11 of one core, but the inner layer may be composed of two or more layers, and one kind of wire constituting the inner layer is used. It may be constituted by a plurality of types having different diameters. In addition, as an element wire forming the inner layer 2, a copper wire, a copper wire plated with tin, nickel, silver or the like, an aluminum wire, various alloy wires, an enameled wire, a formal wire, or the like is covered with an insulation coating. A thing etc. can be used and the same material as the strand which forms an outer layer may be used, and the thing of a different material may be used. For example, as shown in FIG. 7, the number of large diameter wires 12 constituting the first outer layer 4, the number of medium diameter wires 13 constituting the outermost layer 5, and the number of thin diameter wires 14 constituting the outermost layer 5. Of the first inner layer 33 in which the outer layer 3 is composed of the same number of eight, and one center line 31 and eight strands 32 of the same diameter are disposed so as to cover the center line 31. The inner layer 34 may be composed of two layers to form the stranded wire conductor 35.

  Further, as shown in FIG. 8, the number of large-diameter wires 12 constituting the first outer layer 4, the number of medium-diameter wires 13 constituting the outermost layer 5, and the number of thin-diameter wires 14 constituting the outermost layer 5. The first inner layer 43 in which the outer layer 3 is composed of 12 wires of the same number, and one center line 41 and six strands 42 having the same diameter are disposed so as to cover the center line 41. The inner layer 46 may be configured by three layers of the second inner layer 45 in which six strands 44 having the same diameter are disposed so as to cover the first inner layer 43, and the stranded wire conductor 47 may be formed.

  Further, as shown in FIG. 9, the number of large diameter wires 12 constituting the first outer layer 4, the number of medium diameter wires 13 constituting the outermost layer 5, and the number of thin diameter wires 14 constituting the outermost layer 5. Are composed of the same number 10 of the outer layer 3, and are composed of a single center line 51 and five first strands 52 and five second strands 53 so as to cover the center line 51. At the same time, the inner layer 55 may be constituted by two layers of the first inner layer 54 in which the first strands 52 and the second strands 53 are alternately arranged to form the stranded conductor 56.

  Since other structures are the same as those of the first and second embodiments, description thereof is omitted.

  Also in the third embodiment, the same effects as those of the first and second embodiments can be exhibited.

[Example 4]
The stranded wire conductors 1, 2, 22, 23, 24, 25, 35, 47, and 56 of Examples 1 to 3 may be compressed from the outer peripheral portion of the outermost layer 5 with a compression die or the like.

  By this compression, the outer peripheral portions of the strands 13 and 14 forming the outermost layer 5 are compressed and deformed, and the outer shape of the stranded wire conductor can be made closer to a perfect circle. The compression with a compression die or the like may be performed when the stranded wire conductors 1, 22, 22, 23, 24, 25, 35, 47, 56 are manufactured, or the stranded wire conductors 1, 22, 22, 23, 24. , 25, 35, 47, 56 may be performed. The compression rate is arbitrarily set. Since other structures are the same as those in the first to third embodiments, description thereof is omitted.

  Also in the present Example 4, the same effect as the said Examples 1-3 can be exhibited.

  In the stranded wire conductor of the fourth embodiment, the stranded wire conductors 1, 21, 22, 23, 24, 25, 35, 47, and 56 are further compressed from the outer peripheral portion with a die or the like, so that the The outer shape of the stranded wire conductor can be made closer to a perfect circle than the outer shape of the stranded wire conductors 1, 22, 22, 23, 24, 25, 35, 47, 56 of the first to third embodiments. The thickness of the insulating material coating can be made more uniform, the amount of the insulating material can be reduced, and the cost can be further reduced.

1, 2, 22, 23, 24, 25, 35, 47, 56 Twisted wire conductor 3 Outer layer 4 First outer layer 5 Outermost layer 12 Thick diameter wire 13 Medium diameter wire 14 Thin diameter wire

Claims (4)

An outermost layer composed of a plurality of medium-diameter wires and a plurality of thin-diameter wires, and an outer layer that is located inside the outermost layer and includes two layers of a first outer layer composed of a plurality of large-diameter wires ,
The diameter of the small-diameter wire, the in less than the diameter of the radial line, the diameter of the in meridian is less than the diameter of the thick diameter line,
The number of the medium diameter wires constituting the outermost layer, the number of the thin diameter wires constituting the outermost layer, and the number of the large diameter wires constituting the first outer layer are configured with the same number,
The stranded wire conductor, wherein the outermost layer is configured by alternately arranging one medium-diameter wire and one thin-diameter wire.   2. The stranded wire conductor according to claim 1, wherein the medium-diameter wire constituting the outermost layer is disposed in a valley portion between the large-diameter wires adjacent to the first outer layer.   The stranded wire conductor according to claim 1 or 2, wherein the number of the large-diameter wires is eight or more.   The distance from the center of the stranded conductor to the outermost edge of the thin-diameter wire constituting the outermost layer is the same as the distance from the center to the outermost edge of the medium-diameter wire constituting the outermost layer. The stranded wire conductor according to claim 1, 2, or 3.

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