Electric wire with terminal

Abstract

To provide an electric wire with a terminal capable of easily performing quality confirmation.SOLUTION: The terminal-equipped electrical wire 100 includes the electrical wire W in which the conductive portion W2 having conductivity is covered with the insulating covering portion W1 having insulating properties, and the crimp terminal 1 including the conductive crimping portion 44 crimped to the conductive portion W2 exposed from the end of the insulating covering portion W1, the electrical connecting portion 2 electrically connected to the connecting counterpart 200, and the coupling portion 3 that couples and conducts the conductive crimping portion 44 and the electrical connecting portion 2. The conductive portion W1 includes a conductive tip portion W1b that protrudes from the conductive crimping portion 44 toward the electrical connecting portion 2 along the extending direction X in a crimped state where the crimp terminal 1 is crimped to the electrical wire W. The connecting part 3 has an opening 32 for exposing the end W1b of the conductors to the outside in the crimped state, and a facing surface 33 facing the end W1b of the conductors in the height direction Z. The opposed surface 33 has a colored surface 34 colored differently from the color of the W1b of the tip part of the conductive body.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an electric wire with a terminal. [Background technology]

[0002] In a conventional electric wire connection structure for a terminal, for example, an aluminum electric wire having an aluminum conductor (core wire) covered with an insulating covering is ultrasonically welded to a terminal (see Patent Document 1). Patent Document 1 describes that after ultrasonically welding the core wire to the terminal, it is visually confirmed whether or not the front end of the core wire weld is positioned between the second positioning portion and the first positioning portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-185283 Summary of the Invention [Problem to be solved by the invention]

[0004] As in the above-mentioned conventional technology, for example, in order to improve the inspection accuracy by visual inspection, positioning ribs are formed on the terminals as inspection positions or notches are provided, but there is room for improvement as there is a risk that the shape of the terminals will become complex.

[0005] An object of the present invention is to provide an electric wire with a terminal that can easily be checked for quality. [Means for solving the problem]

[0006] In order to achieve the above object, the electric wire with terminal of the present invention comprises: an electric wire in which a conductive conductor portion is covered with an insulating covering portion having insulation properties; a conductor crimping portion that is crimped onto the conductor portion exposed from an end of the insulating covering portion; an electrical connection portion that is electrically connected to a connection partner; and a crimp terminal that includes a linking portion that links and provides conductivity between the conductor crimping portion and the electrical connection portion, wherein the conductor portion has a conductor tip portion that protrudes from the conductor crimping portion toward the electrical connection portion in the extension direction of the linking portion in a crimped state in which the conductor crimping portion is crimped onto the conductor portion, and the linking portion has an opening that opens in a direction perpendicular to the extension direction in the crimped state, exposing the conductor tip portion to the outside, and an opposing surface that faces the conductor tip portion in the orthogonal direction as viewed from the opening, and the opposing surface has a colored surface that is colored in a color different from the color of the conductor tip portion. [Effects of the Invention]

[0007] Advantageous Effects of Invention According to the electric wire with terminal of the present invention, it is possible to easily check the quality of the electric wire with terminal. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view showing a schematic configuration of an electric wire with a terminal according to a first embodiment. [Figure 2] FIG. 2 is a partially enlarged view showing a main part of the electric wire with terminal shown in FIG. [Figure 3] FIG. 3 is a plan view showing a schematic configuration of an electric wire with a terminal according to the second embodiment. [Figure 4] FIG. 4 is a partially enlarged view showing a main part of the electric wire with terminal shown in FIG. [Figure 5] FIG. 5 is a schematic diagram showing the state of the crimp terminal according to the second embodiment before being pressed. [Figure 6] FIG. 6 is a schematic diagram showing an example of quality check of the electric wire with terminal according to the second embodiment. [Figure 7] FIG. 7 is a schematic diagram showing another example of quality check of the electric wire with terminal according to the second embodiment. [Figure 8] FIG. 8 is a schematic diagram showing another example of quality check of the electric wire with terminal according to the second embodiment. [Figure 9] FIG. 9 is a schematic diagram showing another example of quality check of the electric wire with terminal according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the following embodiments. That is, the components in the following embodiments include those that can be easily imagined by a person skilled in the art or those that are substantially the same, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention.

[0010] In the following description, the X direction in the drawings will be referred to as the "extension direction X," the Y direction as the "width direction Y," and the Z direction as the "height direction Z." The extension direction X, width direction Y, and height direction Z are perpendicular to one another. The extension direction X corresponds to the direction along the axis Xa (see FIG. 1, etc.) of the electric wire on which the crimp terminal is provided, the extension direction of the electric wire, the insertion / removal direction of the crimp terminal and its connection counterpart, etc. One side of the extension direction X will be referred to as the "forward direction X1," and the other side will be referred to as the "rearward direction X2." The width direction Y and height direction Z are included in the orthogonal directions perpendicular to the extension direction X. Unless otherwise specified, the directions used in the following description represent the directions when the respective parts are assembled together.

[0011] [First embodiment] 1 and 2 is applied to a wire harness or the like used in a vehicle such as an automobile. Here, the wire harness is, for example, a collective component in which a plurality of electric wires W used for power supply and signal communication are bundled together to connect various devices mounted on the vehicle, and the plurality of electric wires W are connected to the devices using connectors or the like.

[0012] The electric wire with terminal 100 includes an electric wire W and a crimp terminal 1 crimped to an end of the electric wire W for conductive connection.

[0013] The electric wire W is arranged in a vehicle and electrically connects various devices. The electric wire W extends linearly along an axis Xa and is formed so as to extend with approximately the same diameter in the extension direction X of the terminal-fitted electric wire 100. As shown in FIG. 1 , the electric wire W includes a linear conductor portion W1 having electrical conductivity and an insulating covering portion W2 having insulating properties and covering the outside of the conductor portion W1. The electric wire W is an insulated electric wire in which the conductor portion W1 is covered with the insulating covering portion W2.

[0014] The conductor portion W1 is a core wire formed by bundling a plurality of conductive metal wires. The conductor portion W1 has a substantially circular cross section when viewed from the extending direction X. The conductor portion W1 may be a twisted core wire formed by twisting the plurality of metal wires together.

[0015] The insulating coating portion W2 is a wire coating that coats the outer periphery of the conductor portion W1. The insulating coating portion W2 has a substantially annular cross section when viewed from the extending direction X. The insulating coating portion W2 is formed, for example, by extrusion molding an insulating resin material (such as PP (polypropylene), PVC (polyvinyl chloride), or cross-linked PE (polyethylene), which is appropriately selected taking into consideration abrasion resistance, chemical resistance, heat resistance, etc.).

[0016] The insulating sheath W2 is stripped from at least one end of the electric wire W, and the conductor W1 is exposed from the end of the insulating sheath W2. The electric wire W is provided with crimp terminals 1 near the end of the insulating sheath W2 and on the exposed portion from the end of the insulating sheath W2.

[0017] The crimp terminal 1 is a terminal fitting to which an electric wire W is electrically connected and to which a conductive connection mate 200 (see FIG. 1, etc.) is connected. The connection mate 200 is, for example, a terminal formed of a conductive metal material and to which the crimp terminal 1 can be connected. The crimp terminal 1 includes an electrical connection portion 2, a connecting portion 3, and an electric wire crimping portion 4. The electrical connection portion 2, the connecting portion 3, and the electric wire crimping portion 4 are integrally formed as a whole using a conductive metal member. For example, the crimp terminal 1 is formed by shaping a single piece of sheet metal P (see FIG. 5) by various processes such as pressing and bending to fit the shapes of each portion, such as the electrical connection portion 2, the connecting portion 3, and the electric wire crimping portion 4, so that each portion is three-dimensionally integrated. The crimp terminal 1 is arranged and connected to each other in this order along the extension direction X from the front X1 side to the rear X2 side, with the electrical connection portion 2, the connecting portion 3, and the electric wire crimping portion 4.

[0018] The electrical connection part 2 is a part that is electrically connected to the connection partner 200. The electrical connection part 2 may have a male terminal shape or a female terminal shape. The electrical connection part 2 of this embodiment is illustrated as having a female terminal shape, and is electrically connected to the connection partner 200 that has a male terminal shape. Note that the electrical connection part 2 is not limited to a mating terminal, and may be configured to be electrically connected to various conductive members such as an earth member. In this case, the electrical connection part 2 may have a shape of a so-called round terminal (LA terminal) that is fastened to an earth member or the like.

[0019] The connecting portion 3 is interposed between the electrical connection portion 2 and the wire crimping portion 4, and is a portion that connects and provides conduction between the electrical connection portion 2 and the wire crimping portion 4. In the crimp terminal 1, the electrical connection portion 2 and the wire crimping portion 4 are electrically connected via the connecting portion 3, and the electrical connection portion 2 and the conductor portion W1 of the electric wire W are electrically connected and provided conduction through the wire crimping portion 4. The cross section of the connecting portion 3, as viewed from the extension direction X, is formed into a substantially trough-like shape.

[0020] The connecting portion 3 includes a bottom plate 30, a pair of side plates 31, an opening 32, and an opposing surface 33. The bottom plate 30 and the side plates 31 are each connected to the electrical connection portion 2 on the front X1 side and to the wire crimping portion 4 on the rear X2 side. The bottom plate 30 is arranged along the extension direction X and the width direction Y. The side plates 31 are provided rising along the height direction Z on both sides of the bottom plate 30 in the width direction Y. The bottom plate 30 and the side plates 31 have a generally gutter-shaped cross section when viewed from the extension direction X. The opening 32 is formed between the electrical connection portion 2 and the wire crimping portion 4 in the extension direction X and between the pair of side plates 31 opposing each other in the width direction Y when the wire crimping portion 4 is crimped to the electric wire W. The opening 32 opens in a direction perpendicular to the extending direction X (here, on the opening side, which is one side in the height direction Z) when the wire crimping portion 4 is crimped to the electric wire W, and exposes the conductor tip portion W1b to the outside. The conductor tip portion W1b is a tip portion of the conductor portion W1 exposed to the outside through the opening 32. The conductor portion W1 of this embodiment has the conductor tip portion W1b that protrudes from the wire crimping portion 4 toward the electrical connection portion 2 along the extending direction X of the coupling portion 3 when the wire crimping portion 4 is crimped to the electric wire W.

[0021] The facing surface 33 is a surface facing the conductor tip portion W1b in the height direction Z when viewed from the opening 32. The facing surface 33 is provided on the bottom plate 30 and corresponds to the bottom surface of the connecting portion 3. In this embodiment, the facing surface 33 has a colored surface 34 that is colored in a color different from the color of the conductor tip portion W1b.

[0022] The colored surface 34 is provided on the opposing surface 33 before the wire crimping portion 4 is crimped to the conductor portion W1. The colored surface 34 has a core wire position confirmation frame 34a that is formed in a rectangular shape when viewed from the opening 32 along the height direction Z. The colored surface 34 is an area surrounded by the core wire position confirmation frame 34a. The colored surface 34 is not clearly separated from the core wire position confirmation frame 34a and is colored integrally with the opposing surface 33 in the same color, but is not limited to this. The colored surface 34 is, for example, stamped or laser printed on the opposing surface 33.

[0023] The length W1R of the colored surface 34 in the width direction Y is substantially the same as the diameter of the conductor portion W1 (see FIG. 2). Furthermore, if the end of the wire crimping portion 4 on the front X1 side (the electrical connection portion 2 side) is defined as a reference position RP, the position of the colored surface 34 in the extending direction X is determined by a length W1_MAX from the reference position RP to an end edge 34b of the colored surface 34 on the front X1 side, and a length W1_Min from the reference position RP to an end edge 34c of the colored surface 34 on the rear X2 side. This length W1_MAX is the upper limit of the standard core wire projection dimension, and W1_Min is the lower limit of the standard core wire projection dimension. In other words, the coloring range of the colored surface 34 in the extending direction X is determined by the upper and lower limit of the standard core wire projection dimension. That is, the size of the core wire position confirmation frame 34a is determined by the upper and lower limit of the standard core wire projection dimension and the diameter of the conductor portion W1.

[0024] The wire crimping portion 4 is a portion to which the electric wire W is connected and which electrically connects the end of the electric wire W with the crimp terminal 1. The wire crimping portion 4 is provided on the end of the electric wire W by being crimped and crimped to the end of the electric wire W. The wire crimping portion 4 is made up of a conductor crimping portion 44, an intermediate portion 45, and a covering crimping portion 46.

[0025] The conductor crimping portion 44 is configured to include a pair of barrel pieces 44a. The intermediate portion 45 is interposed between the conductor crimping portion 44 and the insulation crimping portion 46, and is a portion that connects and provides conductivity between the conductor crimping portion 44 and the insulation crimping portion 46. The insulation crimping portion 46 is configured to include a pair of barrel pieces 46a. The wire crimping portion 4 is arranged in the extension direction X from the connecting portion 3 side to the opposite side, with the conductor crimping portion 44, intermediate portion 45, and insulation crimping portion 46 lined up in this order and connected to each other.

[0026] The conductor crimping portion 44 includes a pair of barrel pieces 44a. The intermediate portion 45 is interposed between the conductor crimping portion 44 and the coating crimping portion 46, connecting them for electrical continuity. When the wire crimping portion 4 is crimped to the electric wire W, the intermediate portion 45 opens to one side in the height direction Z (opening side) and exposes an intermediate exposed portion W1a, which is a part of the conductor portion W1, to the outside. Here, the state in which the wire crimping portion 4 is crimped to the electric wire W, means a crimped state in which the conductor crimping portion 44 is crimped to the conductor portion W1, and a state in which the coating crimping portion 46 is crimped to the insulating coating portion W2. The coating crimping portion 46 includes a pair of barrel pieces 46a. The wire crimping portion 4 is arranged in the extending direction X from the connecting portion 3 side to the opposite side, and is connected to each other in the order of the conductor crimping portion 44, the intermediate portion 45, and the coating crimping portion 46. The wire crimping portion 4 is a so-called separate barrel type crimping portion in which a pair of barrel pieces 44a and a pair of barrel pieces 46a are separated via an intermediate portion 45.

[0027] In the electric wire with terminal 100 configured as described above, the conductor portion W1 of the electric wire W to which the crimp terminal 1 is crimped may be made of, for example, aluminum (Al) or an aluminum alloy. In this case, the conductor portion W1 is a core wire formed by bundling together a plurality of metal wires made of aluminum or an aluminum alloy. On the other hand, the crimp terminal 1 may be formed by plating the surface of a base material made of a different metal from the conductor portion W1, for example, copper (Cu) or a copper alloy, with tin (Sn) or the like. Note that an aluminum alloy is an alloy whose main component is aluminum. Also, a copper alloy is an alloy whose main component is copper, and includes, for example, so-called brass.

[0028] Next, a manufacturing method of the electric wire with terminal 100 will be described. The manufacturing method of the electric wire with terminal 100 includes, for example, a coloring step of adding a colored surface 34 to the crimp terminal 1 before crimping using a stamp or the like, a crimping step of crimping the crimp terminal 1 to the electric wire W after the coloring step, and an inspection step of inspecting the electric wire with terminal 100 after the crimping step. In the electric wire with terminal 100 of this embodiment, the quality is checked in the inspection step by determining whether or not the conductor tip portion W1b after crimping is within the core wire position confirmation frame 34a of the colored surface 34. That is, the electric wire with terminal 100 is determined to be non-defective when the conductor tip portion W1b does not overlap the core wire position confirmation frame 34a of the colored surface 34, or when the conductor tip portion Wb covers the entire colored surface 34 so that the core wire position confirmation frame 34a is not visible.

[0029] In conventional electric wires with terminals, the conductor portion W1 is made of aluminum or aluminum alloy, and the surface including the facing surface 33 of the crimp terminal 1 is plated with tin or the like, so that the color of the conductor tip portion W1b and the color of the facing surface 33 are the same silver color, making it difficult to determine whether or not the conductor tip portion W1b is within the core wire position confirmation frame 34a of the colored surface 34. Specifically, even in an inspection that automatically determines whether or not the conductor tip portion W1b is within the core wire position confirmation frame 34a of the colored surface 34 by performing image processing on an image of the facing surface 33 photographed by the camera 300 (see FIGS. 2 and 4), it is not easy to make such a determination because the color of the conductor tip portion W1b and the color within the core wire position confirmation frame 34a are the same color.

[0030] Therefore, in the electric wire with terminal 100 of this embodiment, the colored surface 34 is colored in a color different from the color of the conductor tip portion W1b, making it easy to determine whether or not the conductor tip portion W1b is within the core wire position confirmation frame 34a of the colored surface 34. That is, because the electric wire with terminal 100 has a colored surface 34 that is different in color from the conductor tip portion W1b, it becomes easy to determine whether or not the conductor tip portion W1b is within the core wire position confirmation frame 34a of the colored surface 34, whether this determination is made automatically by image processing using the camera 300, or whether this determination is made manually by visual inspection. Note that FIG. 2 shows a state in which the conductor tip portion W1b is not within the core wire position confirmation frame 34a of the colored surface 34.

[0031] As described above, the electric wire with terminal 100 according to the first embodiment includes the electric wire W and the crimp terminal 1. The conductor portion W1 of the crimp terminal 1 has a conductor tip portion W1b that protrudes from the conductor crimping portion 44 toward the electrical connection portion 2 along the extension direction X in a crimped state in which the crimp terminal 1 is crimped to the electric wire W. The connecting portion 3 has an opening 32 that exposes the conductor tip portion W1b to the outside in the crimped state, and an opposing surface 33 that faces the conductor tip portion W1b in the height direction Z. The opposing surface 33 has a colored surface 34 that is colored in a color different from the color of the conductor tip portion W1b.

[0032] With the above configuration, the electric wire with terminal 100 has a different color between the conductor tip portion W1b and the color of the colored surface 34, making it possible to easily determine whether the conductor tip portion W1b is within the core position confirmation frame 34a on the colored surface 34. As a result, the quality of the electric wire with terminal 100 can be easily confirmed. Furthermore, compared to the conventional electric wire with terminal described above, the electric wire with terminal 100 does not require a positioning rib, notch, or the like to be provided on the crimp terminal, which makes it possible to prevent the shape of the crimp terminal from becoming complicated.

[0033] Furthermore, in the electric wire with terminal 100, the colored surface 34 is provided against the opposing surface 33 before the conductor crimping portion 44 is crimped to the conductor portion W1. As a result, in the electric wire with terminal 100, compared to the above-described conventional electric wire with terminal, it is not necessary to provide a positioning rib, a notch, or the like when pressing the crimp terminal 1, and the colored surface 34 can be easily provided on the crimp terminal 1.

[0034] [Second embodiment] Next, an electric wire with terminal 100A according to a second embodiment shown in Figures 3 and 4 will be described. The electric wire with terminal 100A and the crimp terminal 1A differ from the electric wire with terminal 100 and the crimp terminal 1 according to the first embodiment in that, in the state before the conductor crimping portion 44 is crimped to the conductor portion W1, a colored surface 34A is provided on the metal plate P (see Figure 5) at a stage before the crimp terminal 1A is formed, whereas the colored surface 34 is provided on the opposing surface 33 of the connecting portion 3. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0035] As shown in FIG. 5 , the colored surface 34A is provided on the surface P2, which will be formed as the opposing surface 33 of the connecting portion 3 during press processing, before press processing. The colored surface 34A is a part of the surface P2. The sheet metal P of this embodiment is composed of the surface P1, which has been subjected to the conventional plating process described above, and the surface P2, which is colored a different color from the surface P1. The surfaces P1 and P2 have different colors across a boundary 38. Of the two boundaries 38 formed on the sheet metal P, the boundary 38 on the front X1 side is located on the electrical connection portion 2 side of the connecting portion 3 when viewed from the opening 32 after the crimp terminal 1A has been formed. The surface P2 is a portion that has been colored, matted, etc. The surface P2 includes a portion that will be formed into the connecting portion 3 of the crimp terminal 1 by bending the sheet metal P after press processing along the processing line Pa.

[0036] Next, a manufacturing method of the electric wire with terminal 100A will be described. The manufacturing method of the electric wire with terminal 100A includes, for example, a plating process (low-temperature black chrome plating, color plating, etc.) performed on the surface of the metal plate P, a coloring process after the plating process of coloring the surface P2, a press process after the coloring process of punching the metal plate P along the processing line Pa, and a bending process after the press process. The manufacturing method of the electric wire with terminal 100A includes a crimping process performed after the bending process, and an inspection process performed after the crimping process.

[0037] In the electric wire with terminal 100A of this embodiment, the colored surface 34A is colored a different color from the conductor tip portion W1b. However, the colored surface 34A differs from the colored surface 34 in that the core position confirmation frame 34a on the colored surface 34 cannot be visually confirmed. That is, in the electric wire with terminal 100A, when the conductor crimping portion 44 is crimped to the conductor portion W1, the conductor tip portion W1b protruding forward from the conductor crimping portion 44 toward the X1 side so as to overlap with the colored surface 34A as viewed from the opening 32 is photographed by the camera 300. Then, in the electric wire with terminal 100A, image processing is performed on the image photographed by the camera 300 to determine whether the length of the conductor tip portion W1b in the extending direction X exceeds the above-described length W1_MAX or length W1_Min ( FIG. 4 ). In this case, for example, a person performing image inspection determines whether the conductor tip portion W1b is within a determination line displayed on a display screen of the equipment.

[0038] In the image inspection described above, for example, if the lower limit of the specification for length W1_Min is 0.1 mm, and the length (measurement) of the conductor tip W1b in the extension direction X obtained by image processing is 0.2 mm, the measurement value exceeds the lower limit of the specification, and the quality is determined to be OK (see Figure 6). On the other hand, if the length (measurement) of the conductor tip W1b in the extension direction X obtained by image processing is 0.03 mm, this measurement value does not exceed the lower limit of the specification, and the quality is determined to be NG (see Figure 7).

[0039] In the image inspection, for example, if the upper limit of the specification for length W1_Max is 0.7 mm, and the length (measurement) of the conductor tip W1b in the extension direction X obtained by image processing is 0.6 mm, the measurement value does not exceed the upper limit of the specification, and the quality is determined to be OK (see Figure 8). On the other hand, if the length (measurement) of the conductor tip W1b in the extension direction X obtained by image processing is 0.8 mm, this measurement value exceeds the upper limit of the specification, and the quality is determined to be NG (see Figure 9).

[0040] As described above, in the electric wire with terminal 100A according to the second embodiment, the colored surface 34A is provided on the opposing surface 33 before the conductor crimping portion 44 is crimped to the conductor portion W1. This allows the electric wire with terminal 100A to easily provide the colored surface 34A on the crimp terminal 1A.

[0041] In the second embodiment, the manufacturing method of the electric wire with terminal 100A includes a plating process followed by a coloring process, but this is not limited to this. For example, the manufacturing method of the electric wire with terminal 100A may include a heat treatment process in which the metal sheet P is heat-treated, followed by a coloring process, instead of the plating process. Alternatively, the manufacturing method of the electric wire with terminal 100A may include a painting process in which the metal sheet P is painted (air spray painting, baking painting, electrostatic painting, electrodeposition painting, powder coating, etc.), followed by a coloring process, instead of the plating process. Alternatively, the manufacturing method of the electric wire with terminal 100A may include a clad material (a composite material formed by bonding two or more different metal sheets together) for the metal sheet P, and a coloring process for the clad material. Alternatively, the manufacturing method of the electric wire with terminal 100A may include a thermal spraying process in which the metal sheet P is thermal sprayed (flame spraying, arc spraying, plasma spraying, etc.), followed by a matte finish, instead of the coloring process, instead of the plating process. Alternatively, the manufacturing method of the electric wire with terminal 100A may be configured to perform laser welding on the metal plate P instead of the plating process, and then perform a matte finish instead of the coloring process. Alternatively, the manufacturing method of the electric wire with terminal 100A may be configured to perform matte finish on the metal plate P instead of the plating process, and then perform a matte finish instead of the coloring process. [Explanation of symbols]

[0042] 1 crimp terminal 2 Electrical Connections 3 Connecting part 4 Wire crimping section 32 Opening 33 Opposite Surface 34 Colored surface 44 Conductor crimping part 45 Middle section 46 Cover crimping part 100 Wires with terminals W electric wire W1 Conductor W1b Conductor tip W2 Insulation coating

Claims

1. an electric wire in which a conductive conductor portion is covered with an insulating covering portion having insulating properties; a crimp terminal including a conductor crimping portion that is crimped onto the conductor portion exposed from an end of the insulating coating portion, an electrical connection portion that is electrically connected to a connection partner, and a connecting portion that connects the conductor crimping portion and the electrical connection portion to establish electrical continuity, The conductor portion is a conductor tip portion that protrudes from the conductor crimping portion toward the electrical connection portion along an extending direction of the connecting portion when the conductor crimping portion is crimped to the conductor portion, The connecting portion is an opening that opens in a direction perpendicular to the extending direction in the crimped state and exposes the conductor tip to the outside; an opposing surface that faces the conductor tip in the orthogonal direction as viewed from the opening, The opposing surface is A colored surface having a color different from the color of the conductor tip portion A terminal-attached electric wire characterized by:

2. The colored surface is The conductor crimping portion is provided on the opposing surface before being crimped to the conductor portion. The electric wire with terminal according to claim 1 .

3. The crimp terminal is It is formed by press working, The colored surface is In a state before the press working, the connecting portion is provided on a surface that will be formed as the opposing surface during the press working. The electric wire with terminal according to claim 1 .

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