Composite electric wire and manufacturing method of composite electric wire

Abstract

To provide a composite electric wire capable of preventing an electric wire from twisting in a state installed onto an installation object.SOLUTION: A composite electric wire 11 includes a first electric wire 12, a second electric wire 13, a third electric wire 14 and an insulation coating 15 integrally coating the first electric wire 12, the second electric wire 13 and the third electric wire 14. The first electric wire 12, the second electric wire 13 and the third electric wire 14 respectively include exposed parts 12c, 13c and 14c exposed being projected to the outside from an edge part 15a of the insulation coating 15. The insulation coating 15 has a first reference line 31 at a portion in a circumferential direction thereof. The first electric wire 12 has a second reference line 32 at a portion in a circumferential direction of the exposed part 12c.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a composite wire and a method for manufacturing the composite wire.

Background Art

[0002] Conventionally, as a composite wire, there is one including a plurality of wires and an insulating coating that collectively covers the plurality of wires (see, for example, Patent Document 1). Such a composite wire is attached to an attachment target such as a vehicle by an attachment member, for example. For example, the attachment member is fixed to the insulating coating while covering the outer periphery of the insulating coating. Further, the attachment member has an attachment portion such as a fitting portion that protrudes radially outward from a part in the circumferential direction of the insulating coating and is attached to the attachment target.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, a plurality of wires in a composite wire may have an exposed portion that protrudes to the outside from an end portion of the insulating coating. And when the wire has an exposed portion, there may be a case where, while attaching a part of the insulating coating to the attachment target, a part of the exposed portion of the wire is also attached to the attachment target. In such a case, if the attachment member fixed to the insulating coating and the attachment member fixed to the exposed portion of the wire are fixed haphazardly, each of the attachment portions of the attachment member will face in various directions, and there is a risk that the wire will be twisted when attached to the attachment target. Note that the wire being twisted causes the wire to bend, which in turn causes problems such as the wire colliding with other members.

[0005] An object of the present disclosure is to provide a composite wire capable of preventing twisting of an electric wire in a state of being attached to an attachment target, and a method for manufacturing the composite wire.

Means for Solving the Problems

[0006] The composite wire of the present disclosure is a composite wire including a plurality of electric wires and an insulating coating that collectively covers the plurality of electric wires, wherein the plurality of electric wires have exposed portions that are exposed by protruding to the outside from an end portion of the insulating coating, a first reference mark is provided in a part of the circumferential direction of the insulating coating, and a second reference mark is provided in a part of the circumferential direction of the exposed portion of at least one of the plurality of electric wires.

Effects of the Invention

[0007] According to the composite wire and the method for manufacturing the composite wire of the present disclosure, twisting of the electric wire in a state of being attached to an attachment target can be prevented.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0009] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be listed and described. The composite wire of the present disclosure is [1]A composite wire including a plurality of electric wires and an insulating coating that collectively covers the plurality of electric wires, wherein the plurality of electric wires have exposed portions that are exposed by protruding outward from an end portion of the insulating coating, a first reference mark is provided on a part of the circumferential direction of the insulating coating, and a second reference mark is provided on a part of the circumferential direction of the exposed portion of at least one of the plurality of electric wires.

[0010] According to the same configuration, since a first reference mark is provided on a part of the circumferential direction of the insulating coating and a second reference mark is provided on a part of the circumferential direction of the exposed portion of at least one of the plurality of electric wires, it is possible to prevent the twisting of the electric wires. For example, when fixing a first attachment member to the insulating coating, with the first attachment portion of the first attachment member being fixed to the first attachment target while being fixed to the insulating coating, the circumferential position of the first attachment portion is determined with reference to the first reference mark. Then, when fixing a second attachment member to the exposed portion of the electric wire, with the second attachment portion of the second attachment member being fixed to the second attachment target while being fixed to the exposed portion of the electric wire, the circumferential position of the second attachment portion is determined with reference to the second reference mark. Thereby, it is possible to prevent the twisting of the electric wires in a state where the composite wire is attached to the first attachment target and the second attachment target.

[0011] [2]In the above [1], the insulating coating is attached to a first attachment target by a first attachment portion of the first attachment member while the first attachment member is fixed thereto, and the exposed portion of the electric wire where the second reference mark is provided is attached to a second attachment target by a second attachment portion of the second attachment member while the second attachment member is fixed thereto. The first reference mark may be a first reference line that is continuously provided from a non-twistable range adjacent to an end portion of the insulating coating to at least a fixing portion of the first attachment member, and the second reference mark may be a second reference line that is continuously provided from a non-twistable range adjacent to an end portion of the insulating coating to at least a fixing portion of the second attachment member.

[0012] According to the same configuration, the first reference mark is a first reference line that is continuous from the non-twistable range adjacent to the end of the insulating coating to the fixing portion of the first mounting member, and the second reference mark is a second reference line that is continuous from the non-twistable range adjacent to the end of the insulating coating to the fixing portion of the second mounting member. Therefore, for example, the wire is prevented from twisting one turn. That is, for example, when the second reference mark is provided only at the fixing portion of the second mounting member and the fixing portion is far from the end of the insulating coating, etc., there is a possibility that the operator may not notice even if the wire twists one turn, but this can be prevented.

[0013] [3] In the above [2], the first reference line and the second reference line may be provided linearly when viewed from the outer side in the radial direction of the insulating coating. According to the same configuration, since the first reference line and the second reference line are provided linearly when viewed from the outer side in the radial direction of the insulating coating, they can be easily provided. For example, the first reference line and the second reference line can be painted using a linear jig. Therefore, the manufacturing becomes easy.

[0014] [4] In the above [3], the first reference line and the second reference line may be provided at a position where the step difference between the first reference line and the second reference line is minimized. According to the same configuration, since the first reference line and the second reference line are provided at a position where the step difference between the first reference line and the second reference line is minimized, they can be easily provided. For example, the first reference line and the second reference line can be continuously and easily painted. Therefore, the manufacturing becomes even easier.

[0015] [5] In any one of the above [1] to the above [4], the first reference mark may be made of paint applied to the insulating coating, and the second reference mark may be made of paint applied to the exposed portion.

[0016] According to the same configuration, since the first reference mark is made of paint applied to the insulating coating and the second reference mark is made of paint applied to the exposed portion, it can be easily provided compared to, for example, the case of being made of an adhesive tape.

[0017] [6] In any one of [1] to [5] above, it may include a first attachment member having a first attachment portion attached to a first attachment target and fixed to the insulating coating, and a second attachment member having a second attachment portion attached to a second attachment target and fixed to the exposed portion of the electric wire provided with the second reference mark.

[0018] According to the same configuration, in the composite electric wire including the first attachment member and the second attachment member, twisting of the electric wire can be prevented. [7] In any one of [1] to [6] above, it may include a separator provided between the plurality of electric wires and the insulating coating.

[0019] According to the same configuration, since a separator is provided between the plurality of electric wires and the insulating coating, for example, when the exposed portion is exposed by removing a part of the insulating coating, the insulating coating can be easily separated from the plurality of electric wires. Specifically, for example, in the case where the insulating coating is provided outside the plurality of electric wires by extrusion molding, if there is no separator, the insulating coating will adhere to the plurality of electric wires, making it difficult to separate them later, but this can be avoided.

[0020] The manufacturing method of the composite electric wire of the present disclosure is [8] A first fixing step of fixing a first attachment member to an insulating coating that collectively covers a plurality of electric wires, and a second fixing step of fixing a second attachment member to an exposed portion of the plurality of electric wires that is exposed by protruding outward from an end portion of the insulating coating. A method for manufacturing a composite electric wire, wherein the first attachment member has a first attachment portion to be attached to a first attachment target, the second attachment member has a second attachment portion to be attached to a second attachment target, and before the first fixing step, a first reference step of providing a first reference mark on a part of the circumferential direction of the insulating coating, and before the second fixing step, a second reference step of providing a second reference mark on a part of the circumferential direction of the exposed portion. In the first fixing step, the first attachment member is fixed to the insulating coating while determining the circumferential position of the first attachment portion with reference to the first reference mark. In the second fixing step, the second attachment member is fixed to the exposed portion while determining the circumferential position of the second attachment portion with reference to the second reference mark.

[0021] According to the method, in the first reference step before the first fixing step, a first reference mark is provided on a part of the circumferential direction of the insulating coating, and in the second reference step before the second fixing step, a second reference mark is provided on a part of the circumferential direction of the exposed portion. Then, in the first fixing step, the first attachment member is fixed to the insulating coating while determining the circumferential position of the first attachment portion with reference to the first reference mark. Also, in the second fixing step, the second attachment member is fixed to the exposed portion while determining the circumferential position of the second attachment portion with reference to the second reference mark. Thereby, it is possible to prevent the twisting of the electric wires in a state where the composite electric wire is attached to the first attachment target and the second attachment target.

[0022] [Details of Embodiments of the Present Disclosure] A specific example of the composite wire of the present disclosure will be described below with reference to the drawings. In each drawing, for convenience of explanation, a part of the configuration may be exaggerated or simplified. Also, the dimensional ratios of each part may be different in each drawing. The terms "parallel", "orthogonal", and "perfect circle" in this specification include not only the cases of strict parallelism, orthogonality, and perfect circle, but also the cases that are generally parallel, orthogonal, and perfect circle within the scope where the effects of the present embodiment are achieved. Note that the present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0023] (Configuration of the composite wire 11) As shown in FIGS. 1 to 3, the composite wire 11 includes a first wire 12, a second wire 13, and a third wire 14 as a plurality of wires, and an insulating coating 15 that collectively covers the first wire 12, the second wire 13, and the third wire 14.

[0024] Also, as shown in FIG. 3, the composite wire 11 includes a separator 16. Also, as shown in FIG. 1, the composite wire 11 includes a first attachment member 17, a second attachment member 18, and a connector 19.

[0025] (Configuration of the first wire 12, the second wire 13, and the third wire 14) As shown in FIG. 3, the first wire 12, the second wire 13, and the third wire 14 have conductive core wires 12a, 13a, 14a and wire insulating coatings 12b, 13b, 14b that cover the outer peripheries of the core wires 12a, 13a, 14a and have insulating properties. Note that the diameter of the first wire 12 in the present embodiment is larger than the diameters of the second wire 13 and the third wire 14, and the diameters of the second wire 13 and the third wire 14 are the same.

[0026] (Configuration of the insulating coating 15 and the separator 16) The insulating coating 15 is made of a resin material having insulating properties. The insulating coating 15 of this embodiment is made of polyethylene. The insulating coating 15 is provided on the outside of the first electric wire 12, the second electric wire 13, and the third electric wire 14 by extrusion molding so as to collectively cover the first electric wire 12, the second electric wire 13, and the third electric wire 14. The outer circumference of the insulating coating 15 is circular.

[0027] The separator 16 is provided between the first electric wire 12, the second electric wire 13, the third electric wire 14 and the insulating coating 15. Specifically, the separator 16 collectively covers the first electric wire 12, the second electric wire 13, and the third electric wire 14. The separator 16 of this embodiment is made of a non-woven fabric and is wound around the first electric wire 12, the second electric wire 13, and the third electric wire 14. And the insulating coating 15 is provided outside the separator 16. Note that, inside the separator 16, the portions where the first electric wire 12, the second electric wire 13, and the third electric wire 14 do not exist are taken as voids. Also, in FIG. 3, the separator 16 is schematically illustrated as a single line. Also, each of the first electric wire 12, the second electric wire 13, and the third electric wire 14 at the portion covered by the insulating coating 15 is in a spiral shape. In other words, the first electric wire 12, the second electric wire 13, and the third electric wire 14 at the portion covered by the insulating coating 15 are twisted by being twisted in a bundled state. That is, the first electric wire 12, the second electric wire 13, and the third electric wire 14 in the state before the separator 16 and the insulating coating 15 are provided are twisted, and in that state, the separator 16 and the insulating coating 15 are provided on the outside.

[0028] As shown in FIG. 1, the first electric wire 12, the second electric wire 13, and the third electric wire 14 have exposed portions 12c, 13c, 14c that are exposed by protruding to the outside from the end portion 15a of the insulating coating 15. Note that the exposed portions 12c, 13c, 14c of this embodiment are exposed by removing a part of the insulating coating 15 and the separator 16. That is, the composite electric wire 11 is first manufactured such that all of the extending directions of the first electric wire 12, the second electric wire 13, and the third electric wire 14 are covered by the separator 16 and the insulating coating 15, and then is manufactured by removing a part of the insulating coating 15 and the separator 16.

[0029] (Configuration of the First Mounting Member 17 and the Second Mounting Member 18) The first mounting member 17 has a first mounting portion 17a to be mounted on a first mounting target 21, and is fixed to the insulation coating 15. For example, the first mounting member 17 is fixed to the insulation coating 15 while covering the outer periphery of the insulation coating 15. Also, for example, the first mounting portion 17a protrudes radially outward from a part in the circumferential direction of the insulation coating 15 and is fitted into a mounting hole of the first mounting target 21. Note that the first mounting target 21 is, for example, a vehicle body (not shown) or the like. Thereby, the insulation coating 15 is mounted on the first mounting target 21. Also, in FIG. 1, the first mounting portion 17a is schematically illustrated as a triangle.

[0030] The second mounting member 18 has a second mounting portion 18a to be mounted on a second mounting target 22, and is fixed to the exposed portion 12c of the first electric wire 12. For example, the second mounting member 18 is fixed to the exposed portion 12c while covering the outer periphery of the exposed portion 12c of the first electric wire 12. Also, for example, the second mounting portion 18a protrudes radially outward from a part in the circumferential direction of the exposed portion 12c and is fitted into a mounting hole of the second mounting target 22. Note that the second mounting target 22 is, for example, a vehicle body (not shown) or the like. Thereby, the exposed portion 12c of the first electric wire 12 is mounted on the second mounting target 22. Also, in FIG. 1, the second mounting portion 18a is schematically illustrated as a triangle.

[0031] Both ends of the core wires 12a, 13a, and 14a of the first electric wire 12, the second electric wire 13, and the third electric wire 14 in the composite electric wire 11 of the present embodiment are electrically connected to an electric device or the like. For example, one ends of the core wires 13a and 14a of the second electric wire 13 and the third electric wire 14 are electrically connected to a connector 19 (see FIG. 1).

[0032] Here, as shown in FIGS. 1 to 3, a first reference line 31 as a first reference mark is provided in a part in the circumferential direction of the insulation coating 15, and a second reference line 32 is provided in a part in the circumferential direction of the exposed portion 12c of the first electric wire 12.

[0033] As shown in Fig. 1, the first reference line 31 is continuously provided from the non-twistable range H1 adjacent to the end 15a of the insulating coating 15 to at least the fixing portion of the first mounting member 17. Here, the non-twistable range H1 is a range in which the insulating coating 15 cannot be twisted by one turn around its own axis center (for example, it cannot be twisted because the insulating coating 15 is broken). In this embodiment, the insulating coating 15 is set to a range in which it cannot be twisted by 0.5 turns. The first reference line 31 of this embodiment is provided over the entire length of the insulating coating 15 in the extending direction.

[0034] Also, the second reference line 32 is continuously provided from the non-twistable range H2 adjacent to the end 15a of the insulating coating 15 to at least the fixing portion of the second mounting member 18. Here, the non-twistable range H2 is a range in which the first electric wire 12 cannot be twisted by one turn around its own axis center (for example, it cannot be twisted because the wire insulating coating 12b is broken). In this embodiment, the first electric wire 12 is set to a range in which it cannot be twisted by 0.5 turns. The second reference line 32 of this embodiment is provided over the entire length of the exposed portion 12c of the first electric wire 12 in the extending direction.

[0035] Also, as shown in Fig. 2, the first reference line 31 and the second reference line 32 are provided at positions where both can be visually recognized when viewed from the outer side in the radial direction of the insulating coating 15, specifically, when viewed from a certain direction on the outer side in the radial direction of the insulating coating 15. Also, the first reference line 31 and the second reference line 32 are provided so as to be continuous when viewed from the outer side in the radial direction of the insulating coating 15. Also, the first reference line 31 and the second reference line 32 are provided in a straight line when viewed from the outer side in the radial direction of the insulating coating 15.

[0036] Also, as shown in Fig. 3, the first reference line 31 and the second reference line 32 are provided at the position where the step difference between the first reference line 31 and the second reference line 32 is the smallest. That is, the second reference line 32 is provided at the circumferential position closest to the outer peripheral surface of the insulating coating 15 on the outer peripheral surface of the exposed portion 12c of the first electric wire 12.

[0037] Further, the first reference line 31 is made of paint applied to the insulating coating 15, and the second reference line 32 is made of paint applied to the exposed portion 12c of the first electric wire 12. In the present embodiment, the first reference line 31 and the second reference line 32 are paints of colors different from the colors of the insulating coating 15 and the exposed portion 12c, and are applied, for example, by a pen, a spray, or the like.

[0038] Then, the first attachment member 17 is fixed to the insulating coating 15 while the circumferential position of the first attachment portion 17a is determined with reference to the first reference line 31. In the present embodiment, the first attachment member 17 is fixed to the insulating coating 15 such that the first attachment portion 17a is disposed on the opposite side of the first reference line 31 in the circumferential direction of the insulating coating 15, that is, at a position shifted 180° from the first reference line 31.

[0039] Also, the second attachment member 18 is fixed to the exposed portion 12c of the first electric wire 12 while the circumferential position of the second attachment portion 18a is determined with reference to the second reference line 32. In the present embodiment, the second attachment member 18 is fixed to the exposed portion 12c such that the second attachment portion 18a is disposed at a position that coincides with the second reference line 32 in the circumferential direction of the exposed portion 12c.

[0040] Next, a manufacturing method of the composite electric wire 11 configured as described above and its operation will be described. The manufacturing method of the composite electric wire 11 includes a "coating step", a "partial coating removal step", a "first reference step", a "second reference step", a "first fixing step", and a "second fixing step".

[0041] First, in the coating step, the separator 16 is disposed outside the twisted first electric wire 12, second electric wire 13, and third electric wire 14, and the insulating coating 15 is further provided outside thereof by extrusion molding.

[0042] Next, as shown in FIG. 4, in the partial coating removal step, by removing a part of the insulating coating 15 and the separator 16, a part of the first wire 12, the second wire 13, and the third wire 14 protrudes outward from the end 15a of the insulating coating 15. As a result, the first wire 12, the second wire 13, and the third wire 14 will have exposed portions 12c, 13c, and 14c that are exposed to the outside. Since the first wire 12, the second wire 13, and the third wire 14 are twisted inside the insulating coating 15, depending on which part of the insulating coating 15 is removed, it will be determined from which circumferential position of the insulating coating 15 the first wire 12 protrudes. Therefore, the first reference line 31 and the second reference line 32 described above cannot be provided before the partial coating removal step.

[0043] Next, as shown in FIG. 5, in the first reference step, a first reference line 31 is provided on a part of the circumferential direction of the insulating coating 15. Further, in the second reference step, a second reference line 32 is provided on a part of the circumferential direction of the exposed portion 12c of the first wire 12. In the present embodiment, the first reference step and the second reference step are performed continuously. That is, in the present embodiment, by using a pen, a spray, or the like, the first reference line 31 is painted on a part of the circumferential direction of the insulating coating 15, and continuously, the second reference line 32 is painted on a part of the circumferential direction of the exposed portion 12c.

[0044] Next, as shown in FIG. 1, in the first fixing step, the first attachment member 17 is fixed to the insulating coating 15 while determining the circumferential position of the first attachment portion 17a with reference to the first reference line 31. Further, in the second fixing step, the second attachment member 18 is fixed to the exposed portion 12c of the first wire 12 while determining the circumferential position of the second attachment portion 18a with reference to the second reference line 32. The composite wire 11 configured in this way is attached to the first attachment target 21 and the second attachment target 22 when the first attachment portion 17a is attached to the first attachment target 21 and the second attachment portion 18a is attached to the second attachment target 22.

[0045] Next, the effects of the above embodiment will be described below. (1) A first reference line 31 is provided on a part of the circumferential direction of the insulating coating 15, and a second reference line 32 is provided on a part of the circumferential direction of the exposed part 12c of the first electric wire 12, so that the twisting of the first electric wire 12 can be prevented. For example, when fixing the first attachment member 17 to which the first attachment part 17a is attached to the first attachment target 21 while being fixed to the insulating coating 15, the circumferential position of the first attachment part 17a is determined with reference to the first reference line 31. Then, when fixing the second attachment member 18 to which the second attachment part 18a is attached to the second attachment target 22 while being fixed to the exposed part 12c of the first electric wire 12, the circumferential position of the second attachment part 18a is determined with reference to the second reference line 32. Thereby, the twisting of the first electric wire 12 in a state where the composite electric wire 11 is attached to the first attachment target 21 and the second attachment target 22 can be prevented. Further, since the composite electric wire 11 is to be attached to the first attachment target 21 and the second attachment target 22 based on the first reference line 31 of the insulating coating 15 and the second reference line 32 of the first electric wire 12, the positions of the second electric wire 13 and the third electric wire 14 can also be determined at good positions. Specifically, first, for example, as shown in FIG. 3, at the stage where the first reference line 31 and the second reference line 32 are provided (upward in FIG. 3), the positions of the second electric wire 13 and the third electric wire 14 with respect to the first reference line 31 and the second reference line 32 are determined (downward in FIG. 3). Then, since the composite electric wire 11 is to be attached to the first attachment target 21 and the second attachment target 22 based on the first reference line 31 and the second reference line 32, the positions of the second electric wire 13 and the third electric wire 14 with respect to the first attachment target 21 and the second attachment target 22 are also determined. Thereby, for example, problems such as the second electric wire 13 and the third electric wire 14 colliding with other members can be suppressed.

[0046] (2) The first reference mark is a first reference line 31 that is continuous from the non-twistable range H1 adjacent to the end 15a of the insulating coating 15 to the fixing portion of the first attachment member 17. Also, the second reference mark is a second reference line 32 that is continuous from the non-twistable range H2 adjacent to the end 15a of the insulating coating 15 to the fixing portion of the second attachment member 18. Thus, for example, the first electric wire 12 is prevented from twisting one full turn. That is, for example, if the second reference mark is provided only at the fixing portion of the second attachment member 18 and the fixing portion is far from the end 15a of the insulating coating 15, there is a possibility that the operator may not notice even if the first electric wire 12 twists one full turn, but this can be prevented.

[0047] (3) Since the first reference line 31 and the second reference line 32 are provided linearly when viewed from the outer side in the radial direction of the insulating coating 15, they can be easily provided. For example, the first reference line 31 and the second reference line 32 can be painted using a linear jig. Thus, manufacturing becomes easy. Also, the first reference line 31 and the second reference line 32 are provided at positions where both can be visually recognized when viewed from a certain direction on the outer side in the radial direction of the insulating coating 15. Thus, for example, the operator can visually recognize the first reference line 31 and the second reference line 32 simultaneously, and as a result, for example, the workability when fixing the first attachment member 17 or the second attachment member 18 becomes good.

[0048] (4) Since the first reference line 31 and the second reference line 32 are provided at positions where the step difference between the first reference line 31 and the second reference line 32 is minimized, they can be easily provided. For example, the first reference line 31 and the second reference line 32 can be continuously and easily painted. Thus, manufacturing becomes even easier.

[0049] (5) The first reference line 31 is made of paint applied to the insulating coating 15, and the second reference line 32 is made of paint applied to the exposed portion 12c of the first electric wire 12. Therefore, for example, it can be more easily provided compared to the case where it is made of an adhesive tape or the like.

[0050] (6) It includes a separator 16 provided between the first wire 12, the second wire 13, the third wire 14 and the insulating coating 15. Thus, for example, when exposing the exposed portions 12c, 13c, 14c by removing a part of the insulating coating 15, the insulating coating 15 can be easily separated from the first wire 12, the second wire 13 and the third wire 14. Specifically, for example, when the insulating coating 15 is provided on the outside of the first wire 12, the second wire 13 and the third wire 14 by extrusion molding, if there is no separator 16, the insulating coating 15 may adhere to the first wire 12, the second wire 13 and the third wire 14. In this case, it becomes difficult to later separate the insulating coating 15 from the first wire 12, the second wire 13 and the third wire 14, but this can be avoided. Thus, for example, the manufacturing becomes easy.

[0051] (7) In the manufacturing method of the composite wire 11, in the first reference step before the first fixing step, a first reference line 31 is provided on a part of the circumferential direction of the insulating coating 15, and in the second reference step before the second fixing step, a second reference line 32 is provided on a part of the circumferential direction of the exposed portion 12c. Then, in the first fixing step, the first attachment member 17 is fixed to the insulating coating 15 while determining the circumferential position of the first attachment portion 17a with reference to the first reference line 31. Also, in the second fixing step, the second attachment member 18 is fixed to the exposed portion 12c while determining the circumferential position of the second attachment portion 18a with reference to the second reference line 32. Thereby, it is possible to prevent the twisting of the first wire 12 in a state where the composite wire 11 is attached to the first attachment object 21 and the second attachment object 22.

[0052] This embodiment can be implemented with the following modifications. This embodiment and the following modification examples can be implemented in combination with each other within a technically non - conflicting range. · In the above embodiment, the first reference mark is the first reference line 31 and the second reference mark is the second reference line 32, but it is not limited to this. For example, the first reference line 31 may be a first reference mark provided only at the fixing portion of the first attachment member 17. Also, the second reference line 32 may be a second reference mark provided only at the fixing portion of the second attachment member 18.

[0053] Further, in the above-described embodiment, the first reference line 31 is provided over the entire extending direction of the insulating coating 15 and is provided starting from the end portion 15a of the insulating coating 15. However, the present invention is not limited to this. For example, the first reference line 31 may be continuously provided from a position away from the end portion 15a of the insulating coating 15 to the fixing portion of the first attachment member 17 within the non-twistable range H1 adjacent to the end portion 15a of the insulating coating 15. Further, in the above-described embodiment, the second reference line 32 is provided over the entire extending direction of the exposed portion 12c in the first electric wire 12 and is provided starting from the end portion 15a of the insulating coating 15. However, the present invention is not limited to this. For example, the second reference line 32 may be continuously provided from a position away from the end portion 15a of the insulating coating 15 to the fixing portion of the second attachment member 18 within the non-twistable range H2 adjacent to the end portion 15a of the insulating coating 15. Even in this case, an effect similar to the effect (2) of the above-described embodiment can be obtained.

[0054] · In the above-described embodiment, the first reference line 31 and the second reference line 32 are provided in a straight line when viewed from the outer side in the radial direction of the insulating coating 15. However, the present invention is not limited to this, and they may be deviated from a straight line when viewed from the outer side in the radial direction of the insulating coating 15. In this case as well, it is preferable that the first reference line 31 and the second reference line 32 are provided at positions where both are visible when viewed from a certain direction on the outer side in the radial direction of the insulating coating 15.

[0055] · In the above-described embodiment, the first reference line 31 and the second reference line 32 are provided at a position where the step between the first reference line 31 and the second reference line 32 is the smallest. However, the present invention is not limited to this, and they may be provided at a position where the step is large.

[0056] · In the above-described embodiment, the first reference line 31 is made of paint applied to the insulating coating 15, and the second reference line 32 is made of paint applied to the exposed portion 12c. However, the present invention is not limited to this, and for example, it may be made of an adhesive tape.

[0057] ·In the above embodiment, the separator 16 provided between the first electric wire 12, the second electric wire 13, the third electric wire 14, and the insulating coating 15 is provided, but the present invention is not limited thereto, and a configuration without the separator 16 may be used. Further, in the above embodiment, the separator 16 is configured by a non-woven fabric, but the present invention is not limited thereto, and for example, it may be changed to another separator 16 such as paper or powder.

[0058] ·The first reference line 31 and the second reference line 32 in the above embodiment are not limited to solid lines, and may be other line types such as broken lines. That is, the first reference line 31 and the second reference line 32 may be changed to other line types such as broken lines, for example.

[0059] ·In the above embodiment, the composite electric wire 11 includes the first electric wire 12, the second electric wire 13, and the third electric wire 14 as a plurality of electric wires, but a configuration including two electric wires or four or more electric wires such as six or eight electric wires may be used. Further, the thicknesses of the plurality of electric wires included in the composite electric wire 11 may all be the same or partially different.

[0060] ·In the above embodiment, the second attachment member 18 is fixed to the exposed portion 12c of the first electric wire 12, but the present invention is not limited thereto, and the second attachment member 18 may be fixed to the exposed portion 13c of the second electric wire 13 or the exposed portion 14c of the third electric wire 14. In such a case, a second reference line may be provided on the exposed portion 13c of the second electric wire 13 or the exposed portion 14c of the third electric wire 14.

Explanation of Signs

[0061] 11 Composite electric wire 12 First electric wire (electric wire) 12a Core wire 12b Electric wire insulating coating 12c Exposed portion 13 Second electric wire (electric wire) 13a Core wire 13b Electric wire insulating coating 13c Exposed portion 14 Third electric wire (electric wire) 14a Core wire 14b Electric wire insulating coating 14c Exposed part 15 Insulation coating 15a End part 16 Separator 17 First mounting member 17a First mounting part 18 Second mounting member 18a Second mounting part 19 Connector 21 First object to be mounted 22 Second object to be mounted 31 First reference line (first reference mark) 32 Second reference line (second reference mark) H1 Non-twistable range H2 Non-twistable range

Claims

1. A plurality of electric wires, an insulating coating that collectively covers the plurality of electric wires, A composite electric wire comprising: The plurality of electric wires have exposed portions that are exposed by protruding to the outside from the end of the insulating coating, A first reference mark is provided on a part of the circumferential direction of the insulating coating, A second reference mark is provided on a part of the circumferential direction of the exposed portion of at least one of the plurality of electric wires, Composite electric wire.

2. The insulating coating is one that is fixed with a first attachment member and attached to a first attachment target by a first attachment portion of the first attachment member, The exposed portion of the electric wire provided with the second reference mark is one that is fixed with a second attachment member and attached to a second attachment target by a second attachment portion of the second attachment member, The first reference mark is a first reference line that is continuously provided from a non-twistable range adjacent to the end of the insulating coating to at least the fixing portion of the first attachment member, The second reference mark is a second reference line that is continuously provided from a non-twistable range adjacent to the end of the insulating coating to at least the fixing portion of the second attachment member, The composite electric wire according to claim 1.

3. The first reference line and the second reference line are provided linearly when viewed from the outer side in the radial direction of the insulating coating, The composite electric wire according to claim 2.

4. The first reference line and the second reference line are provided at a position where the step between the first reference line and the second reference line is the smallest, The composite electric wire according to claim 3.

5. The first reference mark is made of paint applied to the insulating coating, The second reference mark is made of paint applied to the exposed portion, The composite electric wire according to claim 1.

6. A first attachment member having a first attachment portion attached to a first attachment target and fixed to the insulating coating, A second attachment member having a second attachment portion attached to a second attachment target and fixed to the exposed portion of the electric wire provided with the second reference mark, The composite electric wire according to claim 1.

7. Comprising a separator provided between the plurality of electric wires and the insulating coating, The composite electric wire according to claim 1.

8. A first fixing step of fixing a first attachment member to an insulating coating that collectively covers a plurality of electric wires, A second fixing step of fixing a second attachment member to an exposed portion of the plurality of electric wires that are exposed by protruding to the outside from the end of the insulating coating, A method for manufacturing a composite wire, comprising: The first attachment member has a first attachment portion to be attached to a first attachment target. The second attachment member has a second attachment portion to be attached to a second attachment target. Before the first fixing step, a first reference step of providing a first reference mark on a part of the circumferential direction of the insulating coating; Before the second fixing step, a second reference step of providing a second reference mark on a part of the circumferential direction of the exposed portion; Comprising: In the first fixing step, the first attachment member is fixed to the insulating coating while determining the circumferential position of the first attachment portion with reference to the first reference mark. In the second fixing step, the second attachment member is fixed to the exposed portion while determining the circumferential position of the second attachment portion with reference to the second reference mark. A method for manufacturing a composite wire.

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