Wires with terminals and wire harnesses

Abstract

To provide an electric wire with a terminal, etc., capable of suppressing the spread of an element wire during crimping and protecting the element wire.SOLUTION: An electric wire 10 with a terminal is configured by electrically connecting a terminal 1 and a coated conductive wire 11. The coated conductive wire 11 includes a tensile member 14, a conductive wire 13, and a coating portion 15 that coats the tensile member 14 and the conductive wire 13. The conductive wire 13 is composed of a plurality of element wires 13a. The terminal 1 except for a terminal body 3 includes: a conductive wire crimping portion 7 to which the conductive wire 13 exposed from the coating portion 15 at a tip of the coated conductive wire 11 is crimped; and a protective portion 8 positioned between the conductive wire crimping portion 7 and the coating portion 15 and covering the conductive wire 13 exposed from the conductive wire crimping portion 7 and the coating portion 15. The protective portion 8 is a non-crimped portion.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an electric wire with a terminal for use in, for example, an automobile. [Background technology]

[0002] Typically, in an automotive wire harness, a crimp terminal is connected to the conductor of a covered conductor, which is then bundled and arranged as a signal line in an automobile, etc. In a typical covered conductor and crimp terminal, the covering at the tip of the covered conductor is removed, and the exposed conductor and the conductor crimp portion are crimped to connect them.

[0003] Here, when the electric wires used become thinner, it becomes difficult to maintain strength using only the conductor that constitutes the electric wire, 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, an electric wire containing a reinforcing member has been proposed in which a conductor is wound in a spiral shape around the outer circumference of a metallic or nonmetallic reinforcing member.

[0004] As such an electric wire containing a tension member, for example, a high-tension electric wire in which a plurality of soft copper wires are arranged around a carbon fiber as a tension member has been proposed (Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2002-150841 A Summary of the Invention [Problem to be solved by the invention]

[0006] 12 is a diagram showing a process for crimping such a tensile wire and 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.

[0007] In order to crimp the terminal 101 and the coated conductor wire 111, first, as shown in Fig. 12(a), the coating 115 is removed from the end of the coated conductor wire 111 to expose the internal conductor wire 113. Fig. 13(a) is a cross-sectional view taken along line AA in Fig. 12(a). The conductor wire 113 is formed by twisting a plurality of wires 113a around the outer periphery of a tensile body 114.

[0008] Next, as shown in Fig. 12(b), the exposed conductor wire 113 is inserted into the conductor wire crimping portion 107. Fig. 13(b) is a cross-sectional view of line BB in Fig. 12(b). The conductor wire crimping portion 107 is, for example, tubular, and has an inner diameter larger than the diameter of the conductor wire 113.

[0009] Next, as shown in Fig. 12(c), the conductor crimping portion 107 is crimped to crimp the conductor wire 113. Fig. 13(c) is a cross-sectional view taken along line CC 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 brings the wire 113a and the conductor crimping portion 107 into electrical continuity.

[0010] 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 is reduced, and the wire 113a is stretched in the axial direction. On the other hand, the tensile strength body 114 hardly stretches, and therefore only the wire 113a stretches in the axial direction, with almost no change in the distance between the terminal 101 and the covering portion 115. 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).

[0011] If the wire 113a spreads in the radial direction in this way, there is a risk of it being broken due to contact with the edge of the end of the terminal 101 or other components. On the other hand, if the electric wire does not have the tension member 114, the conductor 113 stretches in the longitudinal direction approximately uniformly, so such spreading can be suppressed. However, as described above, in particular with a thin-diameter coated conductor, there are cases where it is not possible to eliminate the tension member in order to ensure tensile strength. For this reason, even for coated conductors using tension members, a method is desired that suppresses the spreading of the wire 113a and protects the wire 113a during crimping.

[0012] The present invention has been made in consideration of such problems, and has an object to provide an electric wire with a terminal or the like that is capable of suppressing the spread of the elemental wire during crimping and protecting the elemental wire. [Means for solving the problem]

[0013] 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 tension member, a conductor wire, and a coating portion that covers the tension member and the conductor wire, the terminal has a conductor crimping portion to which the conductor wire exposed from the coating portion at a tip of the covered conductor wire is crimped, and a protective portion that is located between the conductor crimping portion and the coating portion and covers the conductor crimping portion and the conductor wire exposed from the coating portion, In the conductor crimping portion, when the conductor is deformed relative to the tensile member, the conductor is not exposed to the outside due to the protective portion and the covering portion inserted into the protective portion, and the covering portion of the covered conductor is crimped to the protective portion. The protective portion is disposed between the conductor crimping portion and the covering crimping portion. The protective portion is a non-crimped portion, and the conductive wire is radially disposed inside the protective portion. spread a gap is formed between the conductor wires, and a gap is also formed between the tension member and the conductor wire. 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.

[0015] The conductor crimping portion, the protection portion and the coating crimping portion may be integrally formed.

[0016] The conductor crimping portion and the protective portion may be integrally formed into a tubular shape that is closed in the circumferential direction.

[0017] According to the first aspect of the present invention, the covered conductor has a conductor and a tension member, and the tension member ensures the tensile strength of the conductor. In addition, a protective portion is provided to cover the conductor exposed between the end of the conductor crimping portion and the end of the coating, and the protective portion is a non-crimped portion, so that the conductor can be prevented from spreading between the conductor crimping portion and the coating.

[0018] In this case, a separate coating crimping portion may be provided. Even if the coating crimping portion is provided, it is possible to prevent the conductor from spreading between the conductor crimping portion and the coating portion.

[0019] In this case, the conductor crimping portion, the protective portion, and the coating crimping portion may be integrally formed, so that no gaps are formed between the respective portions, and exposure of the conductor can be more reliably prevented.

[0020] Furthermore, if the conductor crimping portion is tubular, the conductor can be crimped reliably from the entire circumference. This makes it possible to prevent local stress (deformation) from occurring in the conductor during crimping. Furthermore, since no gaps are formed in the protective portion in the circumferential direction, it is possible to prevent part of the wire from protruding to the outside.

[0021] A second aspect of the present invention is a wire harness comprising a plurality of electric wires with terminals, including the electric wire with terminal according to the first aspect of the present invention, integrated together.

[0022] According to the second aspect of the present invention, for example, a wire harness in which a plurality of small diameter electric wires are bundled can be obtained.

[0023] A third invention is an electric wire with terminal 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, and the terminal includes:the conductor crimping portion is adapted to crimp the conductor exposed from the coating at the tip of the coated conductor; the coating crimping portion is adapted to crimp the coating of the coated conductor; and a protective portion is located between the conductor crimping portion and the coating crimping portion and covers the conductor crimping portion and the conductor exposed from the coating, the conductor crimping portion and the protective portion being integrally formed in a tubular shape closed in the circumferential direction, the diameter of the protective portion is larger than the diameter of the conductor crimping portion, and the coating crimping portion is of an open barrel type, In the conductor crimping portion, when the conductor is deformed relative to the tensile member, the conductor is not exposed to the outside due to the protective portion and the covering portion inserted into the protective portion, and the protective portion is disposed between the conductor crimping portion and the covering crimping portion, Within the protective portion, the conductor is disposed radially. spread and a gap is formed between the conductor wires.

[0024] According to the third aspect of the present invention, since the conductor crimping portion is tubular and integral with the protective portion, the conductor can be crimped reliably from the entire circumference, and since no gap is formed in the protective portion in the circumferential direction, it is possible to more reliably prevent a part of the wire from protruding to the outside. Also, since the insulation crimping portion is an open barrel type, it is easy to arrange the insulation portion on the insulation crimping portion. Effect of the Invention

[0025] According to the present invention, it is possible to provide an electric wire with a terminal, etc., which is capable of suppressing the spread of the element wire during crimping and protecting the element wire. [Brief description of the drawings]

[0026] [Figure 1] FIG. 2 is a perspective view showing a terminal-fitted electric wire 10. [Diagram 2] 2A is a cross-sectional view showing an electric wire with a terminal 10, and FIG. 2B is a cross-sectional view taken along line XX in FIG. [Diagram 3] A diagram showing the terminal 1 and the coated conductor wire 11 before crimping. [Figure 4] 4(a) and (b) are diagrams showing a crimping process of the conductor crimping portion 7 of the electric wire with terminal 10. FIG. [Diagram 5] FIG. 2 is a perspective view showing a terminal-fitted electric wire 10a. [Figure 6] FIG. 3 is a cross-sectional view showing a terminal-fitted electric wire 10a. [Figure 7]FIG. 2 is a diagram showing a terminal 1a and a coated conductor wire 11 before crimping. [Figure 8] 4(a) and (b) are diagrams showing a process of crimping the conductor crimping portion 7 and the insulation crimping portion 9 of the electric wire with terminal 10a. [Figure 9] FIG. [Figure 10] FIG. 3 is a cross-sectional view showing a terminal-fitted electric wire 10b. [Figure 11] FIG. 2 is a diagram showing a terminal 1b and a coated conductor wire 11 before crimping. [Figure 12] 13(a) to 13(c) are diagrams showing a crimping process of a conventional conductor crimping unit 107. [Figure 13] 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). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] (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 coated conductor wire 11, taken along line XX in Fig. 2(a). The electric wire with terminal 10 is formed by electrically connecting a terminal 1 and a coated conductor wire 11.

[0028] 2(b), the covered conductor wire 11 has a tension member 14, a conductor wire 13, and a covering 15 that covers the tension member 14 and the conductor wire 13. The conductor wire 13 is made up of a plurality of strands 13a. The number of strands in the conductor wire 13 is not particularly limited.

[0029] The tension members 14 are members that receive tension in response to a tensile load. In the illustrated example, for example, in a cross section perpendicular to the longitudinal direction of the covered conductor wire 11, at least one tension member 14 is located approximately at the center of the covered conductor wire 11, and multiple strands 13a are disposed on the outer periphery of the tension member 14. Furthermore, the strands 13a may be twisted helically in the longitudinal direction of the covered conductor wire 11 on the outer periphery of the tension member 14.

[0030] 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 a plurality of strength members 14 may be arranged so as to be twisted together. Also, a plurality of conductors 13 each having a strength member 14 covered with a conductor may be twisted together. Also, a conductor may be arranged so as to cover the outer periphery of the central strength member 14. That is, 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.

[0031] The tension members 14 may be metal wires such as steel wires, or may be resin or fiber-reinforced resin. The tension members 14 may also be made of a bundle of multiple fibers such as aramid fibers.

[0032] Conductive wire 13 is made of, for example, copper, a copper alloy, aluminum, or an aluminum alloy, and covering portion 15 that covers conductive wire 13. Conductive wire 13 is more deformed during crimping than tension body 14. In particular, when tension body 14 is made of a nonmetal, tension body 14 hardly deforms at all compared to conductive wire 13. That is, tension body 14 is made of a material that is relatively hard compared to conductive wire 13 (e.g., with a high Young's modulus).

[0033] 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 tension member 14, the cross-sectional area of ​​the conductor 13 may be 0.05 sq or less. By using the tension member 14, for example, even if the cross-sectional area of ​​the conductor 13 is 0.05 sq or less, it is possible to ensure a tensile strength of 50 N or more for the conductor at the conductor crimping portion 7.

[0034] The terminal 1 is configured by connecting a terminal body 3 and a conductor crimping portion 7. The terminal 1 is made of, for example, copper, a copper alloy, aluminum, or an 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.

[0035] The terminal 1 except for the terminal body 3 includes a conductor crimping portion 7 to which the conductor 13 exposed from the covering portion 15 at the tip of the covered conductor wire 11 is crimped, and a protective portion 8 located between the conductor crimping portion 7 and the covering portion 15 and covering the conductor 13 exposed from the covering 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.

[0036] The conductor crimping portion 7 of the terminal 1 is a portion for crimping the conductor 13 exposed from the coating portion 15 at the tip side of the coated conductor wire 11. Note that serrations (not shown) may be provided in the circumferential direction (direction perpendicular to the longitudinal direction) on a part of the inner surface of the conductor crimping portion 7. 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.

[0037] On the other hand, protective part 8 is a non-crimped part. That is, in protective part 8, conductor 13 is not crimped. Therefore, when conductor crimping part 7 is non-circular, protective part 8 has a height greater than that of conductor crimping part 7. That is, the outer diameter and inner diameter of protective part 8 are greater than those of conductor crimping part 7. Note that in protective part 8, a gap may be formed between conductor 13 and the inner surface of protective part 8.

[0038] The tip of protective part 8 is disposed so as to cover a part of the end of covering part 15. That is, the tip of covering part 15 is located inside protective part 8. In this case, protective part 8 and covering part 15 may be in contact with each other, or a gap may be formed between them.

[0039] 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 the terminal body 3 and the 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 terminal 1 may be formed by expanding the tubular member. The tubular portion 7a corresponds to the conductor crimping portion 7 and the protective portion 8.

[0040] 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 part 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.

[0041] Note that a terminal processing section may be formed at the tip of the conductor 13 before the conductor 13 is inserted 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 easy to insert the conductor 13 into the tubular section 7a.

[0042] As an end treatment section, the wires 13a may be plated collectively or separately at least at the tip of the conductor 13. By plating the tip of the conductor 13 from the outer periphery in this manner, the wires 13a are prevented from coming apart, and the wires 13a can be easily inserted into the tubular section 7a. The end treatment section is not limited to methods using compression or plating, and the tip of the conductor 13 may be soldered or welded to prevent the wires 13a from coming apart. A combination of end treatments, such as compression from the outer periphery and batch plating, may also be used.

[0043] Next, the terminal 1 with the coated conductor wire 11 placed on 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 electric wire with terminal 10 before crimping. The molds 21a and 21b have, for example, a substantially semicylindrical 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 (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 (so-called bell-mouth shape).

[0044] 4(b), when the metal mold 21a and the metal mold 21b are engaged with each other to compress the conductor crimping portion 7 (tubular portion 7a), 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 into a substantially circular shape. That is, the terminal 1 is electrically connected to the covered conductor wire 11.

[0045] 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. Also, 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 portion of the tubular portion 7a before crimping is not crimped and maintains a shape close to the shape before crimping.

[0046] Since the conductor crimping portion 7 is crimped, the protective portion 8 also shrinks in diameter slightly due to its deformation, but the conductor 13 is not crimped at least in the protective portion 8. 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.

[0047] In the present 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 perfect contact is the crimped area, while the area where the cross section of the conductor 13 is deformed or 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.

[0048] As described above, since the tip of the covering portion 15 is located inside the protective portion 8, the conductor 13 existing 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 manner, 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.

[0049] In this manner, it is possible to obtain the electric wire with terminal 10. Furthermore, it is possible to obtain a wiring harness in which a plurality of electric wires with terminals, including the obtained electric wire with terminal 10, are integrated together.

[0050] As described above, according to this embodiment, since the coated conductor 11 having the tensile member 14 therein is used, sufficient tensile strength can be ensured even if the conductor has a small diameter. Furthermore, since the conductor 13 is preferentially deformed relative to the tensile member 14 during crimping, the conductor 13 extends toward the front and rear ends of the conductor crimping portion 7, but the conductor 13 is covered by the protective portion 8 at least between the coated portion 15 and the coated portion 15 and is not exposed to the outside. Therefore, the spread of the element wire 13a is suppressed, and the element wire 13a is protected by the protective portion 8, so that the conductor 13 is prevented from being damaged due to contact with the edge of the terminal 1 or other components.

[0051] Moreover, by forming the conductor crimping portion 7 and the protective portion 8 as an integral part, it is easy to manufacture the terminal 1. Furthermore, 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.

[0052] In addition, since the conductor crimping portion 7 is tubular, the conductor 13 can be reliably crimped from all 360° around. 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-diameter conductor 13. In order to further improve the ease of inserting 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.

[0053] Second embodiment Next, a second embodiment will be described. Fig. 5 is a perspective view of an electric wire with terminal 10a according to the second embodiment, and Fig. 6 is a cross-sectional view of the electric wire with terminal 10a. In the following description, the same reference numerals as in Figs. 1 to 4 are used for configurations that have the same functions as in the first embodiment, and duplicated descriptions will be omitted.

[0054] The electric wire with terminal 10a has a configuration substantially similar to that of the electric wire with terminal 10, but differs in that a terminal 1a is used instead of the terminal 1. The terminal 1a has a coating crimping portion 9 in addition to the conductor crimping portion 7. The coating crimping portion 9 is a portion to which 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 a protective portion 8 arranged between the conductor crimping portion 7 and the coating crimping portion 9.

[0055] 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 closed in the circumferential direction. The protective portion 8 has an inner diameter larger than that of the conductor crimping portion 7. This makes it easy to insert the conductor wire 13.

[0056] Next, the terminal 1a with the covered conductor wire 11 placed on 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 electric wire with terminal 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 covering crimping portion 9 that have shapes corresponding to the tubular shape of the conductor crimping portion 7 and the open barrel shape of the covering crimping portion 9, respectively.

[0057] 8(b), when the conductor crimping portion 7 and the coating crimping portion 9 are compressed by engaging the mold 21a and the mold 21b, 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 portion corresponding to the protective portion 8 does not have to come into contact with the mold 21b, which is the upper mold.

[0058] The distance between the upper and lower dies 21a, 21b is wider in the order of the portions corresponding to the conductor crimping portion 7, the coating crimping portion 9, and the protective portion 8. That is, the heights of the conductor crimping portion 7, the coating crimping portion 9, and the protective portion 8 are smaller in this order.

[0059] In this manner, protective portion 8, which is a non-crimped portion, is formed between the conductor crimping portion 7 and the coating crimping portion 9. That is, within protective portion 8, some gaps may be formed between the conductors 13, between the tensile member 14 and the conductor 13, or between the conductor 13 and protective portion 8, and the conductor 13 and protective portion 8 will not be in complete contact with each other. In this manner, electric wire with terminal 10a can be manufactured.

[0060] According to the second embodiment, it is possible to obtain the same effects as those of the first embodiment. In this way, if the protective portion 8 is provided behind the conductor crimping portion 7, the insulation crimping portion 9 may be provided.

[0061] (Third embodiment) Next, a third embodiment will be described. Fig. 9 is a diagram showing an electric wire with terminal 10b according to the third embodiment, and Fig. 10 is a cross-sectional view of the electric wire with terminal 10b. The electric wire with terminal 10b has a configuration substantially similar to that of the electric wire with terminal 10a, but differs in that a terminal 1b is used instead of the terminal 1a.

[0062] In the terminal 1b, the conductor crimping portion 7, the protective portion 8, and the 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, the protective portion 8, and the coating crimping portion 9. The conductor crimping portion 7 has the shortest height, and the protective portion 8 has the highest height.

[0063] 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 are crimped together by a die in the same manner as described above, to obtain the electric wire with terminal 10b.

[0064] According to the third embodiment, it is possible to obtain the same effects as those of the first embodiment. In addition, by forming the conductor crimping portion 7, the protective portion 8, and the coating crimping portion 9 as an integral part, no gaps are generated between the respective portions, and exposure of the conductor 13 can be reliably suppressed.

[0065] 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-described embodiment. It is clear that a person skilled in the art can think of various modifications or alterations within the scope of the technical ideas described in the claims, and it is understood that these also naturally belong to the technical scope of the present invention.

[0066] For example, the conductor crimping portion 7 and the protective portion 8 are all integrally formed in a tubular shape, but are not limited to this. 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, the conductor crimping portion 7 may have another shape, such as an overlap type, instead of a tubular shape. [Explanation of symbols]

[0067] 1, 1a, 1b...Terminals 3: Terminal body 7………Conductor crimping section 7a……tubular part 8……Protection Department 9.......Sheathing crimping part 10, 10a, 10b.....Terminal wire 11....Coated conductor 13……Conducting wire 13a……Element wire 14……Tensile strength body 15....Coating part 21a, 21b... Mold 101...Terminal 103....Terminal body 107... Conductor crimping section 111....Coated conductor 113……Conductor 113a……Element wire 114……Tensile strength body 115... Covering part

Claims

1. 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. 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. 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.

4. The electric wire with terminal according to claim 1 , wherein the conductor crimping portion and the protective portion are integrally formed in a tubular shape that is closed in a circumferential direction.

5. 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.

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, 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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