JP7630309B2 - Wires with terminals and wire harnesses - Google Patents

Description

The present invention relates to terminal-attached electric wires, etc., for use in automobiles, etc.

Typically, automotive wire harnesses are made by connecting crimp terminals to the conductors of covered conductors, bundling them together, and wiring them as signal lines for automobiles, etc. In general, covered conductors and crimp terminals are connected by removing the covering from the tip of the covered conductor and crimping the exposed conductor to the conductor crimping part.

When the electric wires used become thinner, it becomes difficult for the conductor alone to maintain strength, so electric wires containing reinforcing members are being considered. For example, when using an electric wire made of a conductor with a tensile strength of about 30 N, in order to ensure a tensile strength exceeding 80 N required for electric wires for automobiles, electric wires containing reinforcing members have been proposed in which the conductor is wound in a spiral shape around the outer circumference of a metallic or nonmetallic reinforcing member.

As an example of such an electric wire containing a tension member, a high-tension electric wire has been proposed in which multiple soft copper wires are arranged around a carbon fiber as a tension member (Patent Document 1).

JP 2002-150841 A

Figure 12 shows the process of crimping such a tensile strength electric wire to a terminal. The coated conductor wire 111 has a structure in which a conductor wire 113 is covered with a coating portion 115. The terminal 101 to be crimped has a terminal body 103 and a conductor crimping portion 107 to which the conductor wire 113 is crimped.

To crimp the terminal 101 and the coated conductor 111, first, as shown in FIG. 12(a), the coating 115 is removed from the end of the coated conductor 111 to expose the internal conductor 113. FIG. 13(a) is a cross-sectional view of line A-A in FIG. 12(a). The conductor 113 is composed of multiple strands 113a twisted together around the outer periphery of a tensile member 114.

Next, as shown in FIG. 12(b), the exposed conductor 113 is inserted into the conductor crimping portion 107. FIG. 13(b) is a cross-sectional view of line B-B in FIG. 12(b). The conductor crimping portion 107 is, for example, tubular, and has an inner diameter larger than the diameter of the conductor 113.

Next, as shown in FIG. 12(c), the conductor crimping portion 107 is crimped to crimp the conductor 113. FIG. 13(c) is a cross-sectional view taken along line C-C in FIG. 12(c). By crimping the conductor crimping portion 107, the wire 113a is crushed and comes into close contact with the inner surface of the conductor crimping portion 107. This establishes electrical continuity between the wire 113a and the conductor crimping portion 107.

Here, the tensile strength body 114 is less deformed during crimping than the wire 113a. That is, when the conductor crimping portion 107 is compressed, the wire 113a is crushed and deformed preferentially relative to the tensile strength body 114. At this time, the wire 113a is deformed, the cross-sectional area of the wire 113a decreases, and the wire 113a stretches in the axial direction. On the other hand, the tensile strength body 114 hardly stretches, so the distance between the terminal 101 and the covering portion 115 hardly changes, and only the wire 113a stretches in the axial direction. As a result, the wire 113a expands in the radial direction at the rear end of the terminal 101, as shown in FIG. 12(c).

If the wire 113a spreads in the radial direction in this way, there is a risk of it breaking due to contact with the edge of the end of the terminal 101 or other components. On the other hand, if the wire does not have a tension member 114, the conductor 113 stretches in a substantially uniform manner in the longitudinal direction, so this spreading can be suppressed. However, as mentioned above, in particular with a thin-diameter coated conductor, it may not be possible to eliminate the tension member in order to ensure tensile strength. For this reason, even for coated conductors that use tension members, a method is desired that suppresses the spreading of the wire 113a and protects the wire 113a during crimping.

The present invention was made in consideration of these problems, and aims to provide an electric wire with terminals that can prevent the wire from spreading during crimping and protect the wire.

In order to achieve the above-mentioned object, a first invention is an electric wire with terminal in which a covered conductor wire and a terminal are electrically connected, the covered conductor wire has a strength member, a conductor wire, and a coating portion that coats the strength member and the conductor wire, the terminal has a conductor crimping portion to which the conductor wire exposed from the coating portion at the tip of the covered conductor wire is crimped, and a protective portion located between the conductor crimping portion and the coating portion and covering the conductor crimping portion and the conductor wire exposed from the coating portion , and when the conductor is in a deformed state, the conductor is not exposed to the outside due to the protective portion and the coating portion inserted into the protective portion, and the conductor has a coating crimping portion to which the coating portion of the coated conductor is crimped, the protective portion is disposed between the conductor crimping portion and the coating crimping portion, the protective portion is a non- crimping portion, and within the protective portion, the conductor spreads in the radial direction, so that gaps are formed between the conductors and also between the tensile member and the conductor.
A tip of the protective portion may be disposed so as to cover a portion of the covering portion, and a gap may be formed between the protective portion and the covering portion.

The conductor crimping portion, the protective portion, and the coating crimping portion may be integrally configured.

The conductor crimping portion and the protective portion may be integrally formed in a circumferentially closed tubular shape.

According to the first invention, the coated conductor has a conductor and a tension member, and the tension member ensures the tensile strength of the conductor. In addition, a protective section is provided to cover the conductor exposed between the end of the conductor crimping section and the end of the coating, and because the protective section is a non-crimped section, it is possible to prevent the conductor from spreading between the conductor crimping section and the coating.

In this case, a separate insulation crimping section may be provided. Even if a insulation crimping section is provided, it is possible to prevent the conductor from spreading between the conductor crimping section and the insulation section.

In this case, the conductor crimping section, the protective section, and the coating crimping section can be constructed as a single unit. This prevents gaps from forming between the sections, and more reliably prevents the conductor from being exposed.

Furthermore, if the conductor crimping portion is tubular, the conductor can be reliably crimped from the entire circumference. This makes it possible to prevent localized stress (deformation) from occurring in the conductor during crimping. In addition, the protective portion also has no gaps in the circumferential direction, making it possible to prevent parts of the wire from protruding to the outside.

The second invention is a wire harness characterized by integrating multiple electric wires with terminals, including the electric wire with terminal according to the first invention.

According to the second invention, for example, a wire harness can be obtained in which multiple thin-diameter electric wires are bundled together.

A third invention is an electric wire with a terminal in which a coated conductor wire and a terminal are electrically connected,
The covered conductor has a strength member, a conductor, and a covering portion covering the strength member and the conductor. The terminal includes a conductor crimping portion to which the conductor exposed from the covering portion at the tip of the covered conductor is crimped, a covering crimping portion to which the covering portion of the covered conductor is crimped, and a protective portion located between the conductor crimping portion and the covering crimping portion and covering the conductor crimping portion and the conductor exposed from the covering portion. The conductor crimping portion and the protective portion are integrally formed in a tubular shape closed in the circumferential direction, and the protective portion the diameter of the protective portion is larger than the diameter of the conductor crimping portion, the insulation crimping portion is of an open barrel type, and in a state in which the conductor is deformed relative to the tensile member in the conductor crimping portion, the conductor is not exposed to the outside by the protective portion and the insulation portion inserted in the protective portion, the protective portion is disposed between the conductor crimping portion and the insulation crimping portion, and within the protective portion, the conductor expands in the radial direction and gaps are formed between the conductors.

According to the third invention, the conductor crimping portion is tubular and integral with the protective portion, so that the conductor can be crimped reliably from the entire circumference, and since no gaps are formed in the protective portion in the circumferential direction, it is possible to more reliably prevent parts of the wire from protruding to the outside. In addition, since the insulation crimping portion is an open barrel type, it is easy to position the insulation on the insulation crimping portion.

The present invention provides a terminal-attached electric wire that can prevent the wire from spreading during crimping and protect the wire.

FIG. 1A is a cross-sectional view showing an electric wire with a terminal 10, and FIG. 1B is a cross-sectional view taken along line XX of FIG. FIG. 2 is a diagram showing the terminal 1 and the coated conductor wire 11 before crimping. 4A and 4B are diagrams showing a crimping process of the conductor crimping portion 7 of the electric wire with terminal 10. FIG. FIG. FIG. 2 is a diagram showing a terminal 1a and a covered conductor wire 11 before crimping. 4A and 4B are diagrams showing a process of crimping a conductor crimping portion 7 and a covering crimping portion 9 of an electric wire with terminal 10a. FIG. FIG. A diagram showing the terminal 1b and the covered conductor wire 11 before crimping. 4A to 4C are diagrams showing a crimping process of a conventional conductor crimping section 107. 12(a) is a cross-sectional view taken along line AA in FIG. 12(a), (b) is a cross-sectional view taken along line BB in FIG. 12(b), and (c) is a cross-sectional view taken along line CC in FIG. 12(c).

(First embodiment)
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view showing an electric wire with terminal 10, Fig. 2(a) is a cross-sectional view of the electric wire with terminal 10, and Fig. 2(b) is a cross-sectional view of a covered conductor wire 11, taken along line X-X in Fig. 2(a). The electric wire with terminal 10 is configured by electrically connecting a terminal 1 and a covered conductor wire 11.

As shown in FIG. 2(b), the coated conductor 11 has a tension member 14, a conductor 13, and a coating 15 that coats the tension member 14 and the conductor 13. The conductor 13 is made up of multiple strands 13a. The number of strands in the conductor 13 is not particularly limited.

The tension member 14 is a member that receives tension in response to a tensile load. In the illustrated example, for example, in a cross section perpendicular to the longitudinal direction of the coated conductor 11, at least one tension member 14 is located approximately at the center of the coated conductor 11, and multiple strands 13a are arranged on the outer periphery of the tension member 14. Furthermore, the strands 13a may be twisted in a spiral shape in the longitudinal direction of the coated conductor 11 on the outer periphery of the tension member 14.

The arrangement of the strength members 14 is not limited to the example shown in FIG. 2(b). For example, the conductor 13 (strand 13a) and multiple strength members 14 may be arranged so as to be twisted together. Also, multiple conductors 13 each having a strength member 14 covered with a conductor may be twisted together. Also, the conductor may be arranged so as to cover the outer periphery of the central strength member 14. In other words, in the case of a covered conductor 11 containing a strength member, there is no particular limitation on its cross-sectional shape as long as it has at least one conductor and at least one strength member.

The tension member 14 may be a metal wire such as a steel wire, or may be made of resin or fiber-reinforced resin. The tension member 14 may also be made of a bundle of multiple fibers such as aramid fibers.

The conductor 13 is made of, for example, copper, a copper alloy, aluminum, or an aluminum alloy, and a covering 15 that covers the conductor 13. The conductor 13 is more deformed when crimped than the tensile body 14. In particular, when the tensile body 14 is made of a nonmetallic material, the tensile body 14 hardly deforms at all compared to the conductor 13. In other words, the tensile body 14 is made of a material that is relatively hard (e.g., has a high Young's modulus) compared to the conductor 13.

Here, this embodiment is effective when the cross-sectional area of the conductor 13 (total cross-sectional area of the wires 13a) is 0.3 sq. or less. Also, for example, since the conductor 13 is used together with the tensile body 14, the cross-sectional area of the conductor 13 may be 0.05 sq. or less. By using the tensile body 14, for example, even if the cross-sectional area of the conductor 13 is 0.05 sq. or less, the tensile strength of the conductor at the conductor crimping portion 7 can be ensured to be 50 N or more.

The terminal 1 is formed by connecting the terminal body 3 and the conductor crimping portion 7. The terminal 1 is made of, for example, copper, copper alloy, aluminum, or aluminum alloy. The terminal body 3 is a round terminal provided with a bolt fastening portion. The terminal body 3 may be a female terminal into which a male terminal or the like is inserted from the front end, or may be an insertion tab of a male terminal.

The terminal 1, except for the terminal body 3, includes a conductor crimping portion 7 to which the conductor 13 exposed from the coating portion 15 at the tip of the coated conductor 11 is crimped, and a protective portion 8 located between the conductor crimping portion 7 and the coating portion 15 and covering the conductor 13 exposed from the conductor crimping portion 7 and the coating portion 15. In this embodiment, the conductor crimping portion 7 and the protective portion 8 are tubular (approximately cylindrical) closed in the circumferential direction and are integrally formed.

The conductor crimping portion 7 of the terminal 1 is a portion that crimps the conductor 13 exposed from the coating portion 15 at the tip side of the coated conductor 11. A portion of the inner surface of the conductor crimping portion 7 may be provided with serrations (not shown) in the circumferential direction (perpendicular to the longitudinal direction). By forming the serrations in this manner, the oxide film on the surface of the conductor 13 can be easily destroyed when the conductor 13 is crimped, and the contact area with the conductor 13 can be increased.

On the other hand, the protective portion 8 is a non-crimped portion. That is, the conductor 13 is not crimped in the protective portion 8. Therefore, when the conductor crimping portion 7 is non-circular, the height of the protective portion 8 is greater than the height of the conductor crimping portion 7. That is, the outer diameter and inner diameter of the protective portion 8 are greater than the outer diameter and inner diameter of the conductor crimping portion 7. Note that in the protective portion 8, a gap may be formed between the conductor 13 and the inner surface of the protective portion 8.

The tip of the protective part 8 is arranged so as to cover a part of the end of the covering part 15. In other words, the tip of the covering part 15 is located inside the protective part 8. In this case, the protective part 8 and the covering part 15 may be in contact with each other, or a gap may be formed.

Next, a method for manufacturing the electric wire with terminal 10 will be described. FIG. 3 is a perspective view showing the terminal 1 and the covered conductor wire 11 before crimping. As described above, the terminal 1 has a terminal body 3 and a tubular portion 7a. The tubular portion 7a is tubular and closed in the circumferential direction. The tubular portion 7a may be formed, for example, by rolling a plate member, butting the ends together, and joining them by welding in the longitudinal direction, or the tubular member may be expanded to form the terminal 1. The tubular portion 7a corresponds to the conductor crimping portion 7 and the protective portion 8.

First, as described above, the coating 15 at the tip of the coated conductor 11 is stripped off to expose the conductor 13 at the tip. Next, the conductor 13 is inserted into the tubular portion 7a until a portion of the tip of the coating 15 is inserted into the tubular portion 7a. At this time, the tip of the conductor 13 may protrude from the tip of the tubular portion 7a.

Note that a terminal processing section may be formed at the tip of the conductor 13 before inserting the conductor 13 into the tubular section 7a. The terminal processing section is a processing section that integrates the individual strands of the conductor 13 so that they do not come apart. The terminal processing section can be formed, for example, by compressing at least the tip of the conductor 13 from the outer periphery. In this way, by compressing the tip of the conductor 13 from the outer periphery, the strands 13a are prevented from coming apart, making it easier to insert the conductor 13 into the tubular section 7a.

As an end processing section, the wires 13a may be plated together or separately at least at the tip of the conductor 13. In this way, plating is applied from the outer periphery to the tip of the conductor 13, which prevents the wires 13a from coming apart and makes it easier to insert the wires into the tubular section 7a. The end processing section is not limited to methods using compression or plating, and for example, the tip of the conductor 13 may be soldered or welded to prevent the wires 13a from coming apart. Multiple end processing methods, such as compression from the outer periphery and batch plating, may be used in combination.

Next, the terminal 1 with the coated conductor wire 11 placed in the conductor crimping portion 7 is set in a mold. FIG. 4(a) is a cross-sectional view showing molds 21a and 21b for manufacturing the terminal-attached electric wire 10 before crimping. The molds 21a and 21b have, for example, a substantially semi-cylindrical cavity extending in the longitudinal direction, and are formed so that the portion corresponding to the conductor crimping portion 7 has a substantially circular cross section after crimping. The front and rear ends of the molds 21a and 21b (the portions corresponding to the front and rear ends of the conductor crimping portion 7) may be tapered. In this way, the front and rear ends of the conductor crimping portion 7 can be gradually expanded in diameter after crimping (a so-called bell-mouth shape).

In this state, as shown in FIG. 4(b), when the dies 21a and 21b are engaged and the conductor crimping portion 7 (tubular portion 7a) is compressed, the conductor crimping portion 7 is crimped to the conductor 13. For example, in the tubular conductor crimping portion 7, the conductor 13 is crimped in a substantially circular shape. In other words, the terminal 1 is electrically connected to the coated conductor 11.

At this time, the length of the crimping portion of the dies 21a and 21b is shorter than the length of the tubular portion 7a before crimping. In addition, the crimping range of the dies 21a and 21b is aligned with the tip side (terminal body 3 side) of the tubular portion 7a before crimping. Therefore, a part of the rear end of the tubular portion 7a before crimping is not crimped and maintains a shape close to the shape before crimping.

When the conductor crimping portion 7 is crimped, the protective portion 8 also shrinks in diameter slightly due to the deformation, but at least in the protective portion 8, the conductor 13 is not crimped. For example, in the conductor crimping portion 7, the cross section of the conductor 13 deforms to conform to the shape of the inner surface of the terminal, and the two come into complete contact. Meanwhile, inside the protective portion 8, some gaps are formed between the conductors 13, between the tensile member 14 and the conductor 13, and between the conductor 13 and the protective portion 8, and the conductor 13 and the protective portion 8 do not come into complete contact.

In this invention, the cross section of the conductor 13 is deformed to conform to the shape of the inner surface of the terminal, and the area where the two are in complete contact is the crimped area, while the area where the cross section of the conductor 13 is deformed or where the contact with the terminal is weak (there is a gap and is incomplete) is the non-crimped area. In other words, the protective part 8 is the non-crimped area.

As mentioned above, the tip of the covering portion 15 is located inside the protective portion 8, so the conductor 13 between the conductor crimping portion 7 and the covering portion 15 is covered by the protective portion 8 and is not exposed to the outside. In this way, the length of the tubular portion 7a of the terminal 1 before crimping is set to be equal to or greater than the crimping length required for the conductor crimping portion 7 and the length capable of completely covering the conductor 13 between the conductor crimping portion 7 and the tip of the covering portion 15.

In this way, the terminal-equipped electric wire 10 can be obtained. Furthermore, a wire harness can be obtained in which multiple terminal-equipped electric wires, including the obtained terminal-equipped electric wire 10, are integrated.

As described above, according to this embodiment, since the coated conductor 11 having the tensile body 14 inside is used, sufficient tensile strength can be ensured even with a small diameter. In addition, since the conductor 13 deforms preferentially relative to the tensile body 14 during crimping, the conductor 13 extends toward the front and rear ends of the conductor crimping portion 7, but at least between the coated portion 15 and the conductor 13, the conductor 13 is covered by the protective portion 8 and is not exposed to the outside. Therefore, the spread of the wire 13a is suppressed, and the wire 13a is protected by the protective portion 8, so that the conductor 13 is prevented from being damaged by contact with the edge of the terminal 1 or other components.

In addition, by forming the conductor crimping portion 7 and the protective portion 8 as an integral part, the terminal 1 can be easily manufactured. Even after crimping, no gap is formed between the conductor crimping portion 7 and the protective portion 8, so that the internal conductor 13 can be prevented from protruding to the outside.

In addition, because the conductor crimping portion 7 is tubular, the conductor 13 can be crimped reliably from the entire circumference 360°. As described above, by forming a terminal processing portion at the tip of the conductor 13, the conductor 13 can be easily inserted into the tubular portion 7a even if it is a thin conductor 13. In order to further improve the insertability of the conductor 13 into the conductor crimping portion 7, the rear end portion of the tubular portion 7a before crimping (the side where the conductor 13 is inserted, which corresponds to the protective portion 8) may be enlarged in diameter.

Second Embodiment
Next, a second embodiment will be described. Fig. 5 is a perspective view of an electric wire with a terminal 10a according to the second embodiment, and Fig. 6 is a cross-sectional view of the electric wire with a terminal 10a. In the following description, components having the same functions as those in the first embodiment are denoted by the same reference numerals as those in Figs. 1 to 4, and duplicated descriptions will be omitted.

The electric wire with terminal 10a has a configuration similar to that of the electric wire with terminal 10, but differs in that a terminal 1a is used instead of the terminal 1. In addition to the conductor crimping portion 7, the terminal 1a further has a coating crimping portion 9. The coating crimping portion 9 is the portion where the coating portion 15 of the coated conductor wire 11 is crimped. That is, the terminal 1a has the conductor crimping portion 7 that crimps the conductor wire 13 exposed from the coating portion 15 at the tip side of the coated conductor wire 11, the coating crimping portion 9 that crimps the coating portion 15 of the coated conductor wire 11, and the protective portion 8 that is disposed between the conductor crimping portion 7 and the coating crimping portion 9.

Next, a method for manufacturing the electric wire with terminal 10a will be described. FIG. 7 is a perspective view showing the terminal 1a and the covered conductor wire 11 before crimping. In this embodiment, the conductor crimping portion 7 and the protective portion 8 are integrally formed as a tubular portion 7a that is closed in the circumferential direction. The covering crimping portion 9 is an open barrel type. The inner diameter of the protective portion 8 is larger than the inner diameter of the conductor crimping portion 7. This makes it easy to insert the conductor wire 13.

Next, the terminal 1a with the coated conductor 11 placed in the conductor crimping portion 7 is set in a mold. FIG. 8(a) is a cross-sectional view showing molds 21a and 21b for manufacturing the terminal-attached electric wire 10 before crimping. In this embodiment, the molds 21a and 21b have a portion corresponding to the conductor crimping portion 7 and a portion corresponding to the coating crimping portion 9 that have shapes corresponding to the tubular shape of the conductor crimping portion 7 and the open barrel shape of the coating crimping portion 9, respectively.

In this state, as shown in FIG. 8(b), when the dies 21a and 21b are engaged and the conductor crimping portion 7 and the coating crimping portion 9 are compressed, the conductor crimping portion 7 is crimped to the conductor 13, and the coating crimping portion 9 is crimped to the coating portion 15. Note that the tubular portion 7a in the area corresponding to the protective portion 8 does not need to come into contact with the upper die 21b.

The distance between the upper and lower dies 21a, 21b is wider in the areas corresponding to the conductor crimping portion 7, the insulation crimping portion 9, and the protective portion 8, respectively. In other words, the heights are shorter in the order of the conductor crimping portion 7, the insulation crimping portion 9, and the protective portion 8.

In this way, a protective section 8, which is a non-crimped section, is formed between the conductor crimping section 7 and the coating crimping section 9. In other words, inside the protective section 8, some gaps may be formed between the conductors 13, between the tensile member 14 and the conductor 13, and between the conductor 13 and the protective section 8, and the conductor 13 and the protective section 8 will not be in complete contact with each other. In this way, the electric wire with terminal 10a can be manufactured.

According to the second embodiment, the same effect as the first embodiment can be obtained. In this way, if a protective section 8 is provided behind the conductor crimping section 7, a coating crimping section 9 may also be provided.

Third Embodiment
Next, a third embodiment will be described. Fig. 9 is a diagram showing a terminal-fitted wire 10b according to the third embodiment, and Fig. 10 is a cross-sectional view of the terminal-fitted wire 10b. The terminal-fitted wire 10b has a configuration substantially similar to that of the terminal-fitted wire 10a, but differs in that a terminal 1b is used instead of the terminal 1a.

In terminal 1b, the conductor crimping portion 7, protective portion 8, and coating crimping portion 9 are integrally formed in a circumferentially closed tubular shape. In other words, no gaps are formed between the conductor crimping portion 7, protective portion 8, and coating crimping portion 9. The conductor crimping portion 7 has the shortest height, and the protective portion 8 has the highest height.

Figure 11 is a perspective view showing the terminal 1b and the covered conductor wire 11 before crimping. In this embodiment, the conductor crimping portion 7, the protective portion 8, and the covering crimping portion 9 are made of a tubular portion 7a that is closed in the circumferential direction. The inner diameters of the protective portion 8 and the covering crimping portion 9 are larger than the inner diameter of the conductor crimping portion 7. This makes it easy to insert the conductor wire 13. In this state, the conductor crimping portion 7 and the covering crimping portion 9 can be crimped together using a mold in the same manner as described above to obtain the electric wire with terminal 10b.

According to the third embodiment, the same effect as the first embodiment can be obtained. In addition, by constructing the conductor crimping portion 7, the protective portion 8, and the coating crimping portion 9 as a single unit, no gaps are generated between the respective portions, and exposure of the conductor 13 can be reliably suppressed.

Although the embodiment of the present invention has been described above with reference to the attached drawings, the technical scope of the present invention is not limited to the above-mentioned embodiment. It is clear that a person skilled in the art can come up with various modified or revised examples within the scope of the technical ideas described in the claims, and it is understood that these also naturally fall within the technical scope of the present invention.

For example, the conductor crimping portion 7 and the protective portion 8 are all integrally formed in a tubular shape, but this is not limited thereto. For example, as long as the conductor crimping portion 7 can crimp the conductor 13 and the protective portion 8 can cover the entire periphery of the conductor 13, they may be of another shape, such as an overlap type, instead of a tubular shape.

1, 1a, 1b... Terminal 3... Terminal body 7... Conductor crimping portion 7a... Tubular portion 8... Protective portion 9... Covering crimping portion 10, 10a, 10b... Electric wire with terminal 11... Covered conductor wire 13... Conductor wire 13a... Elemental wire 14... Tensile strength member 15... Covering portion 21a, 21b... Mold 101... Terminal 103... Terminal body 107... Conductor crimping portion 111... Covered conductor wire 113... Conductor wire 113a... Elemental wire 114... Tensile strength member 115... Covering portion

Claims (6)

A terminal-attached electric wire in which a coated conductor wire and a terminal are electrically connected,
The covered conductor wire includes a tension member, a conductor wire, and a covering portion that covers the tension member and the conductor wire,
the terminal includes a conductor crimping portion to which the conductor exposed from the coating portion at the tip of the coated conductor is crimped, and a protective portion located between the conductor crimping portion and the coating portion and covering the conductor crimping portion and the conductor exposed from the coating portion,
In the conductor crimping portion, when the conductor is deformed relative to the tension member, the conductor is not exposed to the outside due to the protective portion and the covering portion inserted into the protective portion,
a coating crimping portion to which the coating portion of the coated conductor is crimped, the protection portion being disposed between the conductor crimping portion and the coating crimping portion;
The protective portion is a non-pressure-bonded portion,
An electric wire with a terminal, characterized in that, inside the protective portion, the conductors expand radially, gaps are formed between the conductors, and gaps are also formed between the tensile body and the conductors. 2. The electric wire with terminal according to claim 1 , wherein a tip of the protective portion is disposed so as to cover a part of the covering portion, and a gap is formed between the protective portion and the covering portion. 3. The electric wire with terminal according to claim 2 , wherein the conductor crimping portion, the protective portion and the coating crimping portion are integrally formed. The electric wire with terminal according to claim 1 , wherein the conductor crimping portion and the protection portion are integrally formed in a circumferentially closed tubular shape. A wire harness comprising a plurality of electric wires with terminals, the electric wire with terminal being the electric wire according to any one of claims 1 to 4 , integrated together. A terminal-attached electric wire in which a coated conductor wire and a terminal are electrically connected,
The covered conductor wire includes a tension member, a conductor wire, and a covering portion that covers the tension member and the conductor wire,
the terminal includes a conductor crimping portion to which the conductor exposed from the coating portion at the tip of the coated conductor is crimped, a coating crimping portion to which the coating portion of the coated conductor is crimped, and a protective portion located between the conductor crimping portion and the coating crimping portion and covering the conductor crimping portion and the conductor exposed from the coating portion,
The conductor crimping portion and the protective portion are integrally formed in a tubular shape closed in the circumferential direction, and a diameter of the protective portion is larger than a diameter of the conductor crimping portion,
The coating crimping portion is an open barrel type,
In the conductor crimping portion, when the conductor is deformed relative to the tension member, the conductor is not exposed to the outside due to the protective portion and the covering portion inserted into the protective portion,
the protection portion is disposed between the conductor crimping portion and the insulation crimping portion,
The electric wire with terminal, wherein the conductors expand radially inside the protective portion, and gaps are formed between the conductors.

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