JP2015082364A - Wire harness and coated wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable discriminating the direction of a terminal metal fitting reliably.SOLUTION: A wire harness W consists of a first coated wire 20A composed of a conductor 21 surrounded with an insulation coating 22 and a second coated wire 20B composed of a conductor 21 surrounded with an insulation coating 22, bundled together. In the outer periphery of the insulation coating 22 forming the first coated wire 20A, a discrimination part 30 which is made of a photocurable resin and allows visual discrimination from the second coated wire 20B is provided. Since the discrimination part 30 is made of the photocurable resin different from the material of the insulation coating 22, the formation region of the discrimination part 30 in the length direction can be reduced to a length shorter than the whole length of the coated wire 22.

Description

  The present invention relates to a wire harness and a covered electric wire.

  In a wire harness in which a plurality of covered electric wires are bundled, it is necessary to identify the covered electric wires for each circuit. Patent Document 1 discloses a technique for integrally forming identification portions having different cross-sectional shapes on the outer periphery of an insulating coating as means for identifying a plurality of coated electric wires. According to this technique, the covered electric wire can be identified by visually observing the shape of the identification portion on the outer periphery of the covered electric wire.

JP 2002-304918 A

However, since the covered wire is formed by integrating the conductor and the insulation coating by extrusion molding, the identification portion formed integrally with the insulation coating is formed over the entire length of the covered wire. . In the case of visually confirming the identification part, it is preferable to enlarge the identification part, but in that case, the covered electric wire has a large diameter over the entire length, and the wire harness also has a large diameter over the entire length. .
This invention was completed based on the above situations, Comprising: It aims at making it easy to visually identify a covered electric wire, without enlarging a covered electric wire over the full length. .

The wire harness of the first invention is
A wire harness configured by bundling a plurality of covered electric wires in a form surrounding a conductor with an insulation coating,
And a photo-curing resin identification portion which is provided on the outer periphery of the insulating coating constituting at least one of the covered electric wires and allows visual discrimination from the other covered electric wires. Has characteristics.

The covered electric wire of the second invention is
It is a form in which a conductor is surrounded by an insulation coating, and is a covered electric wire that constitutes a wire harness by bundling a plurality of wires,
It is characterized in that it includes a photo-curing resin identification portion provided on the outer periphery of the insulating coating.

  The operator can identify the covered electric wire in which the identification part is formed and other covered electric wires by visually checking the identification part. Since the identification part is formed of a photocurable resin separately from the insulating coating, the formation region in the length direction of the identification part can be suppressed to a length shorter than the total length of the covered electric wire. Therefore, according to the present invention, the covered electric wire can be easily identified visually without increasing the diameter of the covered electric wire over the entire length.

The perspective view of the 1st conductive path which comprises the wire harness of Example 1, and a 2nd covered electric wire. Plan view of the first conductive path Side view of the first conductive path Front view of the first conductive path Rear view of the first conductive path XX sectional view of FIG. Sectional drawing of the 1st electric conduction path of Example 2. Sectional drawing of the 1st conductive path of Example 3. Sectional drawing of the 1st conductive path of Example 4. Sectional drawing of the 1st conductive path of Example 5. Sectional drawing of the 1st conductive path of Example 6.

  (1) As for the wire harness of 1st invention, and the covered electric wire of 2nd invention, the cross-sectional shape of the said identification part may be non-circular. According to this structure, it is easy to identify compared with the case where the cross-sectional shape of an identification part is circular.

  (2) In the wire harness of the present invention and the covered electric wire of the second invention, the identification part may be colored in a color different from that of the insulating coating. According to this configuration, it is easy to perform visual identification.

  (3) The wire harness of this invention and the covered electric wire of 2nd invention may be the form in which the said identification part surrounds a covered electric wire over the perimeter. According to this structure, since the formation part of the identification part in the circumferential direction is wide, it is easy to identify.

  (4) As for the wire harness of 1st invention, and the covered electric wire of 2nd invention, the said identification part may consist of ultraviolet curable resin. According to this configuration, the photocurable resin can be effectively cured in a short time with ultraviolet rays having a higher light energy density than visible light.

<Example 1>
A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, the wire harness W of the first embodiment is configured by bundling at least a first first conductive path 10A and a second conductive path 10B. The first conductive path 10A has the terminal metal 11, the first covered electric wire 20A connected to the rear end portion of the terminal metal 11, and the identification formed on the outer periphery of the first covered electric wire 20A. Part 30. The second conductive path 10B includes the same terminal fitting 11 as the first conductive path 10A, and a second covered electric wire 20B (covered electric wire according to claims) connected to the rear end of the terminal fitting 11. The identification part 30 is not formed on the outer periphery of the second covered electric wire 20B.

<Terminal fitting 11>
The terminal fitting 11 is formed into a shape that is elongated in the front-rear direction as a whole by bending the copper plate material. As shown in FIGS. 1 to 3, a rectangular tube portion 12 is formed on the front end side of the terminal fitting 11. The shape of the rectangular tube portion 12 viewed from the front, that is, the shape viewed in parallel with the direction of insertion into the terminal accommodating chamber 36 to be described later, is a substantially vertically long rectangle. Specifically, a retaining protrusion 14 is formed on the upper wall surface 13 of the rectangular tube portion 12. In addition, a stabilizer 15 in a form in which one side plate portion constituting the rectangular tube portion 12 is extended upward is projected from the rectangular tube portion 12. Therefore, the front shape of the rectangular tube portion 12 is an asymmetrical shape. An open barrel-shaped crimping portion 16 is formed on the rear end side of the terminal fitting 11. The crimping portion 16 includes a wire barrel portion 17 disposed on the front side and an insulation barrel portion 18 disposed on the rear side.

<First covered electric wire 20A>
The first covered electric wire 20 </ b> A has a known form in which the outer periphery of the conductor 21 is surrounded by the insulating coating 22 over the entire periphery. The conductor 21 is made of a well-known twisted wire in which a plurality of strands (not shown) made of aluminum or copper are twisted, and has flexibility. The insulating coating 22 is made of a flexible synthetic resin material. The cross-sectional shape when the conductor 21 is cut at right angles to the axis of the first covered electric wire 20A is substantially circular. The cross-sectional shape when the insulating coating 22 is cut at right angles to the axis of the first coated electric wire 20 </ b> A is a cylindrical shape concentric with the conductor 21. At the front end portion of the first covered electric wire 20A, the insulating coating 22 is peeled off and the conductor 21 is exposed.

  The front end portion of the first covered electric wire 20 </ b> A is connected to the rear end portion of the terminal fitting 11 by being crimped at the crimping portion 16. That is, the exposed conductor 21 is fixed to the wire barrel portion 17 so as to be conductive by caulking. Further, the front end portion of the region surrounded by the insulating coating 22 in the first covered electric wire 20 </ b> A is fixed by being caulked to the insulation barrel portion 18. By crimping the front end portion of the first covered electric wire 20A to the crimp portion 16 at the rear end portion of the terminal fitting 11, the first covered electric wire 20A and the terminal fitting 11 are connected to form the first conductive path 10A. The crimping | compression-bonding of 20 A of 1st covered electric wires and the terminal metal fitting 11 is performed using an applicator (automatic machine).

<Second covered wire 20B>
The second covered electric wire 20 </ b> B is obtained by surrounding the outer periphery of the same conductor 21 as the first covered electric wire 20 </ b> A with the same insulating coating 22 as the first covered electric wire 20 over the entire circumference. That is, the conductor 21 of the first covered electric wire 20A and the conductor 21 of the second covered electric wire 20B have the same outer diameter and the same color. Further, the insulation coating 22 of the first covered electric wire 20A and the insulation coating 22 of the second covered electric wire 20B have the same outer diameter and the same color. Therefore, in appearance, the first covered electric wire 20A and the second covered electric wire 20B cannot be distinguished by visual observation. Also, at the front end portion of the second covered electric wire 20A, like the first covered electric wire 20A, the insulating coating 22 is stripped and the conductor 21 is exposed. And the front-end part of this 2nd covered electric wire 20B is connected to the rear-end part of the terminal metal fitting 11 by crimping like the 1st covered electric wire 20A.

<Housing 35>
In the housing 35, a plurality of terminal accommodating chambers 36 elongated in the front-rear direction are formed. The terminal fitting 11 of the first conductive path 10A is inserted into the terminal accommodating chamber 36 from the rear of the housing 35, and the terminal of the second conductive path 10B is inserted in another terminal accommodating chamber 36. The metal fitting 11 is inserted. The terminal fitting 11 inserted into the terminal accommodating chamber 36 is held in a retaining state by engaging the retaining protrusion 14 with a lance (not shown) formed along the inner wall of the terminal accommodating chamber 36.

  A groove portion 37 is formed in the upper inner wall portion of the terminal accommodating chamber 36. When the terminal fitting 11 is inserted into the terminal accommodating chamber 36 in an appropriate direction in the vertical direction and the left / right direction, the stabilizer 15 is fitted into the groove portion 37 and the terminal fitting 11 advances through the terminal accommodating chamber 36 without any trouble. Can do. However, when the orientation of the terminal fitting 11 with respect to the terminal accommodating chamber 36 is an incorrect orientation that is inverted upside down, or an incorrect orientation that is inclined by 90 ° to the left and right, the front end portion of the rectangular tube portion 12 is in the terminal accommodating chamber 36. It interferes with the opening edge of the rear end, and the insertion operation of the terminal fitting 11 is regulated.

<Identification unit 30>
As a means for visually identifying the first conductive path 10A (first covered electric wire 20A) and the second conductive path 10B (second covered electric wire 20B), only the first covered electric wire 20A constituting the first conductive path 10A is used. In addition, an identification unit 30 is formed. The identification part 30 is a form which surrounds the insulation coating 22 of 20 A of 1st covering electric wires over the perimeter. The color of the identification unit 30 is different from that of the insulating coating 22. Moreover, the identification part 30 is closely_contact | adhered to the state by which the relative displacement to the axial direction was controlled with respect to 20 A of 1st covered electric wires, and the relative displacement in the circumferential direction was controlled. When inserting the terminal fitting 11 into the terminal accommodating chamber 36, the operator does not touch the terminal fitting 11 directly, but picks the identification part 30 and applies a forward insertion force to the first conductive path 10A. Can be granted.

  As shown in FIG. 6, the shape of the outer periphery of the identification unit 30 is bilaterally symmetric with respect to the vertical symmetry axis 31 on the cut surface orthogonal to the axis of the first covered electric wire 20 </ b> A. It has become. Specifically, it is generally an equilateral triangle. The outer peripheral surface of the identification unit 30 includes a bottom surface 31 that is substantially parallel to the lower wall surface 19 of the rectangular tube unit 12, a pair of symmetrical side slopes 32 that are inclined at an angle of 60 ° with respect to the bottom surface 31, and the bottom surface 31 side. It is comprised from the three arc-shaped continuous surfaces 33 which connect the slope 32 smoothly. The bottom surface 31 is located radially outward with respect to the outer peripheral surface of the insulating coating 22 (first coated electric wire 20A), but the left and right slopes 32 are generally circumscribed on the outer peripheral surface of the insulating coating 22 (first coated electric wire 20A). Located to be.

<Photocurable resin>
The identification part 30 consists of photocurable resin. The photocurable resin includes a monomer, an oligomer, a photopolymerization initiator (photoinitiator), and various additives. The photocurable resin is cured by light energy when irradiated with light in a liquid state. As the additive, a material is selected that can provide higher rigidity than the insulating coating 22 after curing. In addition, the photocurable resin is roughly classified into an ultraviolet curable resin and a visible light curable resin. In the first embodiment, an ultraviolet curable resin is used as the material of the identification unit 30.

  The reason why an ultraviolet curable resin is used as the material of the identification unit 30 is as follows. The crimping process of the first covered electric wire 20A and the terminal fitting 11 is automated by an applicator. By using an automatic machine (not shown) provided with a photo-curing facility on the applicator, the crimping process is continued. Thus, it is possible to automate the photocuring process for forming the identification unit 30. Since the crimping process is performed in a short time, it is desirable to shorten the time required for the photocuring process in order to continuously and automatically process both processes. The curing time of the photocurable resin is shorter as the density of received light energy is higher. Ultraviolet light has a higher density of light energy than visible light. Therefore, an ultraviolet curable resin having a shorter curing time than a visible light curable resin was used.

<Manufacturing process of first conductive path 10A by automatic machine>
A manufacturing process of the first conductive path 10A by an automatic machine (not shown) will be described. Manufacture is performed through a peeling process, a photocuring process, and a pressure bonding process in order. In the skinning process, the insulating coating 22 at the front end of the first covered electric wire 20A is removed to expose the front end of the conductor 21. In the photocuring step, first, the first covered electric wire 20A is supplied to the mold and set in a state of being positioned in the length direction. Next, a liquid photocurable resin (ultraviolet curable resin) is injected into the mold, and then the liquid photocurable resin in the mold is irradiated with ultraviolet rays. The photocurable resin is cured by the irradiation of ultraviolet rays, and the identification part 30 is molded in a state of being fixed to the outer periphery of the insulating coating 22.

  In the crimping process, the terminal fitting 11 is supplied to a predetermined crimping position, and is placed on the anvil with the lower wall surface 19 of the square tube portion 12 being horizontal. Next, the first covered electric wire 20 </ b> A in which the front end portion of the conductor 21 is exposed and the identification portion 30 is fixed is set on the crimping portion 16 of the terminal fitting 11. At this time, the orientation of the first covered electric wire 20 </ b> A and the identification unit 30 is defined such that the bottom surface 31 on the outer periphery of the identification unit 30 is horizontal (that is, parallel to the lower wall surface 19 of the rectangular tube unit 12). . After the first covered electric wire 20A is set on the crimping portion 16, the crimper is lowered so that the crimping portion 16 is crimped so as to surround the first covered electric wire 20A, and the first covered electric wire 20A and the terminal fitting 11 are connected. Is done. In the connected state, the lower wall surface 19 of the rectangular tube portion 12 and the bottom surface 31 of the identification portion 30 are parallel.

<Operation and Effect of Example 1>
The wire harness W is configured by bundling the first covered electric wire 20A and the second covered electric wire 20B in a form in which the conductor 21 is surrounded by the insulating coating 22, and on the outer periphery of the insulating coating 22 constituting the first covered electric wire 20A. A discriminating portion 30 made of a photo-curing resin is provided in such a manner that it can be discriminated from the second covered electric wire 20B visually. According to this configuration, the operator visually recognizes the identification unit 30, so that the first covered electric wire 20 </ b> A in which the identification unit 30 is formed and the second covered electric wire 20 </ b> B in which the identification unit 30 is not formed. Can be identified. Since the identification portion 30 is formed of a photocurable resin separately from the insulating coating 22, the formation region in the length direction of the identification portion 30 can be suppressed to a length shorter than the entire length of the first covered electric wire 20A. it can. Therefore, the first covered electric wire 20A and the second covered electric wire 20B can be easily identified visually without increasing the diameter of the first covered electric wire 20A over the entire length.

  Moreover, since the cross-sectional shape of the identification part 30 is non-circular, it is easy to identify compared with the case where the cross-sectional shape of the identification part is circular. Moreover, since the identification unit 30 is colored in a color different from that of the insulating coating 22, visual identification is easier. Moreover, since the identification part 30 surrounds the 1st covering electric wire 20A over the perimeter in the 1st conductive path 10A of the present Example 1, the formation area of the identification part 30 in the circumferential direction is wide. Therefore, since the identification part 30 can be visually observed from each direction, it is excellent in visibility and identification ease.

  Further, the first conductive path 10A of the first embodiment is identified when the identification unit 30 is picked because the identification unit 30 has higher rigidity than the insulating coating 22 constituting the first covered electric wire 20A. The part 30 is difficult to deform. Therefore, the workability at the time of inserting the terminal fitting 11 into the terminal accommodating chamber 36 by holding the identification unit 30 is good. Further, in the first conductive path 10A of the first embodiment, since the identification unit 30 is made of an ultraviolet curable resin, the photocurable resin can be used for a short time by ultraviolet light having a higher light energy density than visible light. Can be cured effectively.

<Example 2>
Next, a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, the cross-sectional shape of the outer periphery of the identification unit 40 is different from that of the identification unit 30 of the first embodiment. Since the other configuration is the same as that of the first embodiment, the same reference numeral is given to the same configuration, and the description of the structure, operation, and effect is omitted. The outer peripheral shape of the identification part 40 in the cut surface orthogonal to the axis line of the covered electric wire 20 is left-right symmetric with respect to the symmetry axis 41 in the vertical direction, but is an asymmetrical shape. Specifically, it is generally a trapezoid inverted upside down. The outer peripheral surface of the identification unit 40 includes a lower surface 42 that is substantially parallel to the lower wall surface 19 of the rectangular tube portion 12, a pair of symmetrical side slopes 43 that are inclined at a right angle to the lower surface 42, and the rectangular tube portion 12. The upper surface 44 is substantially parallel to the upper wall surface 13 and the lower surface 42, and four arc-shaped continuous surfaces 45 that smoothly connect the lower surface 42 and the side slope 43 and smoothly connect the upper surface 44 and the side slope 43. The outer peripheral surface of the identification part 40 is located radially outward with respect to the outer peripheral surface of the insulating coating 22 (covered electric wire 20) over the entire periphery.

<Example 3>
Next, a third embodiment of the present invention will be described with reference to FIG. In the third embodiment, the cross-sectional shape of the outer periphery of the identification unit 50 is different from that of the identification unit 30 of the first embodiment. Since the other configuration is the same as that of the first embodiment, the same reference numeral is given to the same configuration, and the description of the structure, operation, and effect is omitted. The outer peripheral shape of the identification part 50 in the cut surface orthogonal to the axis of the covered electric wire 20 is left-right symmetric with respect to the symmetry axis 51 in the vertical direction, but is asymmetrical in shape. Specifically, most of the outer peripheral surface of the identification unit 50 excluding the upper end is an arc surface 52 concentric with the covered electric wire 20. And the upper end part in the outer peripheral surface of the identification part 50 is the projection surface 53 which makes a substantially semicircular arc shape whose curvature radius is smaller than the circular arc surface 52. The outer peripheral surface of the identification part 50 is located radially outward with respect to the outer peripheral surface of the insulating coating 22 (covered electric wire 20) over the entire periphery.

<Example 4>
Next, a fourth embodiment embodying the present invention will be described with reference to FIG. In the fourth embodiment, the cross-sectional shape of the outer periphery of the identification unit 60 is different from that of the identification unit 30 of the first embodiment. Since the other configuration is the same as that of the first embodiment, the same reference numeral is given to the same configuration, and the description of the structure, operation, and effect is omitted. The outer peripheral shape of the identification part in the cut surface orthogonal to the axis of the covered electric wire 20 is vertically symmetrical with respect to the symmetry axis 61 in the left-right direction, but is asymmetric with respect to the point. Specifically, most of the outer peripheral surface of the identification unit 60 excluding one side surface portion is an arc surface 62 concentric with the covered electric wire 20. One side surface portion of the outer peripheral surface of the identification portion 60 is a side surface 63 perpendicular to the upper wall surface 13 and the lower wall surface 19 of the square tube portion 12. The outer peripheral surface of the identification unit 60 is located radially outward with respect to the outer peripheral surface of the insulating coating 22 (covered electric wire 20) over the entire periphery.

<Example 5>
Next, a fifth embodiment of the present invention will be described with reference to FIG. In the fifth embodiment, the cross-sectional shape of the outer periphery of the identification unit 70 is different from that of the identification unit 30 of the first embodiment. Since the other configuration is the same as that of the first embodiment, the same reference numeral is given to the same configuration, and the description of the structure, operation, and effect is omitted.

  The outer peripheral shape of the identification part 70 in the cut surface orthogonal to the axis of the covered electric wire 20 is left-right symmetric with respect to the symmetry axis 71 in the vertical direction, but is asymmetrical with respect to the axis. Specifically, the lower end portion of the outer peripheral surface of the identification portion 70 is a lower surface 72 that is substantially parallel to the lower wall surface 19 of the rectangular tube portion 12. The left and right side portions of the outer peripheral surface of the identification unit 70 form a pair of left and right symmetrical side inclined surfaces 73 inclined at an angle close to a right angle with respect to the lower surface 72. An upper end portion of the outer peripheral surface of the identification unit 70 is an arc surface 74 having an arc shape having a larger radius of curvature than the outer peripheral surface of the covered electric wire 20. The lower surface 72 and the side inclined surface 73 are smoothly connected by an arc-shaped continuous surface 75. The side inclined surface 73 and the circular arc surface 74 are also smoothly connected by the arc-shaped continuous surface 76. The outer peripheral surface of the identification unit 70 is located radially outward with respect to the outer peripheral surface of the insulating coating 22 (covered electric wire 20) over the entire periphery.

<Example 6>
Next, a sixth embodiment of the present invention will be described with reference to FIG. In the sixth embodiment, the cross-sectional shape of the outer periphery of the identification unit 80 is different from that of the identification unit 30 of the first embodiment. Since the other configuration is the same as that of the first embodiment, the same reference numeral is given to the same configuration, and the description of the structure, operation, and effect is omitted. The outer peripheral shape of the identification part 80 in the cut surface orthogonal to the axis of the covered electric wire 20 is vertically symmetrical with respect to the symmetry axis 81 in the left-right direction, but is asymmetrical with respect to the axis. Specifically, most of the outer peripheral surface of the identification unit 80 excluding one side surface portion is an arc surface 82 concentric with the covered electric wire 20. One of the outer peripheral surfaces of the identification unit 80 is a concave surface 83 that is recessed in a substantially arc shape. The outer peripheral surface of the identification unit 80 is located radially outward with respect to the outer peripheral surface of the insulating coating 22 (covered electric wire 20) over the entire periphery.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the identification part made of the photocurable resin is formed on the coated electric wire before the coated electric wire and the terminal metal fitting are crimped. After the coated electric wire and the terminal metal fitting are crimped, the coated electric wire is made of the photocurable resin. An identification unit may be formed.
(2) In the above-described embodiment, the formation range of the identification portion is a region rearward of the rear end of the terminal fitting, but the formation range of the identification portion is forward of the rear end of the terminal fitting, and the front end portion of the identification portion is You may crimp | bond to a terminal metal fitting with a covered electric wire.
(3) Although the cross-sectional shape of the identification portion is non-circular in the above embodiment, the cross-sectional shape of the identification portion may be circular.
(4) In the above embodiment, the identification portion is colored in a color different from that of the insulation coating, but the identification portion and the insulation coating may be the same color.
(5) In the said Example, although the said identification part was made into the form which encloses a covered electric wire over a perimeter, even if the formation area in the circumferential direction of a discrimination | determination part is not a perimeter but only a part. Good.
(6) In the above embodiment, the case where the first covered electric wire in which the identification portion is formed and the second covered electric wire in which the identification portion is not formed has been described. A part may be formed. In this case, as a different form between the identification part of one covered electric wire and the identification part of the other covered electric wire, the form in which the cross-sectional shape is different, the form in which the dimension in the length direction is different, and the arrangement in the length direction are different. Different forms such as different forms, different colors, or various combinations of these forms are possible.
(7) In the above embodiment, the material of the identification part is an ultraviolet curable resin, but the material of the identification part may be a visible light curable resin.

W ... Wire harness 20A ... First covered wire (covered wire)
20B ... Second covered electric wire (covered electric wire)
21 ... Conductor 22 ... Insulation coating 30 ... Identification part 40, 50, 60, 70, 80 ... Identification part

Claims (10)

A wire harness configured by bundling a plurality of covered electric wires in a form surrounding a conductor with an insulation coating,
It is provided on the outer periphery of the insulation coating that constitutes at least one of the covered electric wires, and includes an identification portion made of a photocurable resin in a form that allows visual discrimination from the other covered electric wires. A characteristic wire harness.   The wire harness according to claim 1, wherein a cross-sectional shape of the identification portion is non-circular.   The wire harness according to claim 1 or 2, wherein the identification portion is colored in a color different from that of the insulating coating.   The wire harness according to any one of claims 1 to 3, wherein the identification unit is configured to surround the covered electric wire over the entire circumference.   The wire harness according to any one of claims 1 to 4, wherein the identification portion is made of an ultraviolet curable resin. It is a form in which a conductor is surrounded by an insulation coating, and is a covered electric wire that constitutes a wire harness by bundling a plurality of wires,
A coated electric wire comprising an identification portion made of a photocurable resin provided on an outer periphery of the insulating coating.   The covered electric wire according to claim 6, wherein a cross-sectional shape of the identification portion is non-circular.   The covered electric wire according to claim 6 or 7, wherein the identification portion is colored in a color different from that of the insulating coating.   The covered electric wire according to any one of claims 6 to 8, wherein the identification unit is configured to surround the covered electric wire over the entire circumference.   The covered electric wire according to any one of claims 6 to 9, wherein the identification portion is made of an ultraviolet curable resin.

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