JP2013125738A - Wire with terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire with a terminal which is arranged so that a material used for anti-corrosion treatment does not adhere to the inner wall of a cavity of a connector housing, even if the terminal metal of the wire with a terminal, subjected to anti-corrosion treatment at the electrical joint of the terminal of a wire conductor and the terminal metal, is exposed to high temperature while being housed in the cavity of a connector housing.SOLUTION: A terminal metal 14 is connected to the terminal of a wire conductor 18 exposed by stripping an insulator 22 at the terminal of an insulated wire 12 configured by coating the outer periphery of the wire conductor 18 with the insulator 22. The electrical joint of the terminal of a wire conductor 18 and the terminal metal 14 is covered with a thermosetting resin having a softening point of 150°C or higher, measured according to JIS K6863.

Description

  The present invention relates to a terminal-attached electric wire, and more particularly to a terminal-attached electric wire in which a terminal of an electric wire conductor of a terminal-attached electric wire arranged in a vehicle such as an automobile and an electric connection portion of a terminal fitting are subjected to anticorrosion treatment. is there.

  A terminal fitting is connected to a terminal of an insulated wire routed in a vehicle such as an automobile. If moisture enters the contact portion between the electric wire conductor of the insulated wire and the electric connection portion of the terminal fitting, a battery may be formed between the electric wire conductor and the terminal fitting and metal corrosion may occur. When the wire conductor and the terminal fitting are made of different metal species, metal corrosion is particularly likely to occur at the contact portion. Therefore, in Patent Document 1, a resin is applied to cover an exposed portion of the electric wire conductor between the insulation coating caulking portion and the electric wire conductor caulking portion of the terminal fitting.

JP 2010-108798 A

  When the resin used for such anticorrosion treatment is a thermoplastic resin, after the terminal fitting connected to the end of the insulated wire is accommodated in the cavity of the connector housing, the connector housing containing the terminal fitting is exposed to high temperature. When this is done, there is a problem that the thermoplastic resin used for the anticorrosion treatment comes into close contact with the inner wall of the connector housing cavity. If the terminal fitting is pulled out of the connector housing cavity in this state to re-route the insulated wires, etc., the thermoplastic resin used for the anticorrosion treatment may peel off from the surface of the wire conductor and cause corrosion. Become.

  The problem to be solved by the present invention is that the terminal fitting of the terminal-attached electric wire subjected to the anticorrosion treatment at the electric connection portion of the terminal of the electric wire conductor and the terminal fitting is exposed to a high temperature in a state where it is accommodated in the cavity of the connector housing. However, an object of the present invention is to provide a terminal-attached electric wire in which the material used for the anticorrosion treatment does not adhere to the inner wall of the cavity of the connector housing.

  In order to solve the above problems, a terminal-attached electric wire according to the present invention has a terminal at an end of an electric wire conductor that is exposed by peeling off the insulator at the end of an insulated wire constituted by covering the outer periphery of the electric wire conductor with an insulator. The gist is that the end of the wire conductor and the electrical connection portion of the terminal fitting are covered with a thermoplastic resin having a softening point of 150 ° C. or higher as measured in accordance with JIS K6863. is there.

  In this case, it is preferable that the thermoplastic resin contains a polyamide resin. And it is preferable that the ratio of the polyamide resin to the said thermoplastic resin is 70 mass% or more. Moreover, it is preferable that the said terminal metal fitting is formed of copper or copper alloy, and the said electric wire conductor is formed of aluminum or aluminum alloy.

  According to the electric wire with a terminal according to the present invention, the terminal of the electric wire conductor and the electric connection portion of the terminal fitting are covered with the thermoplastic resin having a softening point of 150 ° C. or higher measured according to JIS K6863. The thermoplastic resin used for the anticorrosion treatment can be prevented from coming into close contact with the inner wall of the cavity of the connector housing even if it is exposed to a high temperature while being accommodated in the cavity of the connector housing. Although there is a risk of being exposed to a high temperature of 120 ° C. in an in-vehicle environment, the thermoplastic resin used for the anticorrosion treatment can be prevented from being in close contact with the cavity inner wall of the connector housing even when exposed to such a high temperature. . Therefore, since the thermoplastic resin as the anticorrosive agent is not peeled off and causes corrosion, the anticorrosion performance is excellent in reliability.

  At this time, if the thermoplastic resin contains a polyamide resin, the adhesion between the terminal fitting and the wire conductor is improved, and therefore, the electric wire is inserted between the thermoplastic resin as the anticorrosive and the terminal fitting or the wire conductor. The effect of suppressing water from entering the contact portion between the terminal of the conductor and the electrical connection portion of the terminal fitting is improved, and the anticorrosion performance is improved. The effect is particularly high when the proportion of the polyamide resin in the thermoplastic resin is 70% by mass or more.

  And when the terminal fitting is made of copper or a copper alloy and the electric wire conductor is made of aluminum or an aluminum alloy, water penetrates into the contact portion between the terminal of the electric wire conductor and the electric connection portion of the terminal fitting. Although different metal contact corrosion is likely to occur, it can be said that the present invention is useful in that such different metal contact corrosion can be suppressed.

Fig.1 (a) is a top view of the electric wire with a terminal before coating the material containing the thermoplastic resin as an anticorrosive agent, FIG.1 (b) is an electrical connection part of an electric wire conductor and a terminal metal fitting. It is a top view of the electric wire with a terminal which coated the material containing the thermoplastic resin as a corrosion inhibitor. It is the side view which looked at the electric wire with a terminal of Drawing 1 (b) from the side. It is the sectional view on the AA line of FIG.1 (b). It is a top view of the electric wire with a terminal of other embodiments of the present invention which changed the coating range of the material containing the thermoplastic resin as a corrosion inhibitor.

  Next, an embodiment of the present invention will be described in detail.

  As shown in FIG. 1, an electric wire with terminal 10 according to an embodiment of the present invention includes an insulated wire 12 configured by covering an outer periphery of a wire conductor 18 made of a plurality of metal strands 20 with an insulator 22. And a terminal fitting 14 connected to the end of the insulated wire 12. The insulated wire 12 has the insulator 22 peeled off at the terminal to expose the wire conductor 18.

  The terminal fitting 14 includes a rectangular tube-shaped terminal connection portion 14a that is electrically connected to the counterpart terminal, a wire barrel 14c that is formed to extend from the rear end side of the terminal connection portion 14a via a terminal base portion 14b, And an insulation barrel 14d formed to extend on the rear end side of the wire barrel 14c. The wire barrel 14c is for caulking the wire conductor 18 exposed at the end of the insulated wire 12 to electrically connect the terminal fitting 14 and the wire conductor 18, and the insulation barrel 14d is the exposed wire conductor. The terminal fitting 14 is attached to the end of the insulated wire 12 by crimping the insulator 22 (insulator 22 at the end of the insulated wire 12) in the vicinity of 18.

  The wire conductor 18 exposed at the end of the insulated wire 12 is crimped by the wire barrel 14c of the terminal fitting 14, and an electrical connection portion (wire connection portion) between the terminal fitting 14 and the wire conductor 18 is formed. . The insulator 22 (insulator 22 at the end of the insulated wire 12) in the vicinity of the exposed wire conductor 18 is crimped by an insulation barrel 14 d of the terminal fitting 14, and the terminal fitting 14 is fixed to the insulator 22. Has been.

  As a material of the metal strand 20 which comprises the electric wire conductor 18, aluminum, an aluminum alloy, gold | metal | money, silver, copper, copper alloy, or the material by which various plating, such as tin, nickel, gold | metal | money, was given to these materials Can be mentioned.

  Examples of the main material of the insulator 22 include a polyolefin resin. Examples of the polyolefin resin include polyethylene, polypropylene, a copolymer of ethylene and an α-olefin having 4 or more carbon atoms, and a copolymer of propylene and an α-olefin having 4 or more carbon atoms. Various additives may be appropriately added to the material of the insulator 22. Examples of the additive include a flame retardant, a filler, a colorant and the like.

  The polyolefin resin used as the main material of the insulator 22 may be modified with an unsaturated carboxylic acid or the like. Alternatively, a combination of one modified with an unsaturated carboxylic acid or the like and one not modified may be used. Examples of the unsaturated carboxylic acid used for modifying the polyolefin resin include maleic acid and fumaric acid. Examples of the unsaturated carboxylic acid derivative include maleic anhydride, maleic acid monoester, maleic acid diester and the like. Of these, maleic acid and maleic anhydride are more preferred. These may be used alone or in combination of two or more.

  Such an acid-modified polyolefin resin may be formed by introducing an unsaturated carboxylic acid or an unsaturated carboxylic acid derivative into the polyolefin resin by a graft method, or may be formed by a copolymerization method with a monomer of a polyolefin resin. It may be formed by copolymerization with an unsaturated carboxylic acid or an unsaturated carboxylic acid derivative.

  Examples of the material (base material) of the terminal fitting 14 include various copper alloys and copper in addition to commonly used brass. A part (for example, a contact) or the entire surface of the terminal fitting 14 may be plated with various metals having electrical conductivity such as tin, nickel, and gold.

  When the metal wire 20 of the electric wire conductor 18 is made of aluminum or an aluminum alloy and the terminal fitting 14 is made of copper, a copper alloy, or a tin plating material, at the electrical connection portion between the terminal fitting 14 and the electric wire conductor 18, a different metal contact is made. Part is formed.

  The wire conductor 18 exposed at the end of the insulated wire 12 is crimped by the wire barrel 14c of the terminal fitting 14 and partially covered by the wire barrel 14c, but the front end side and the rear end of the wire barrel 14c. Exposed on the side. Therefore, an exposed portion of the electrical connection portion between the terminal fitting 14 and the wire conductor 18 exists.

  As shown in FIGS. 1B and 2, the terminal base portion 14 b that is exposed on the tip side of the tip side conductor 18 a that is exposed on the tip side of the wire barrel 14 c is exposed on the rear end side of the wire barrel 14 c. The electrical connection portion between the terminal fitting 14 and the wire conductor 18 is covered with the resin film 16 up to the insulator 22 on the rear end side with respect to the rear end side conductor 18b. That is, the surface of the terminal base portion 14b, the surface of the front end side conductor 18a adjacent to the terminal base portion 14b, the surface of the wire barrel 14c adjacent to the front end side conductor 18a, and the surface of the rear end side conductor 18b adjacent to the wire barrel 14c. The surface of the insulator 22 adjacent to the rear end side conductor 18 b is continuously covered with the resin film 16. Thereby, the conductor exposed portion including the front end side conductor 18a and the rear end side conductor 18b of the electric wire conductor 18 is covered with the resin film 16. That is, the terminal of the electric wire conductor 18 and the electrical connection portion of the terminal fitting 14 are covered with the resin film 16.

  The resin film 16 is made of a material containing a thermoplastic resin. This material functions as an anticorrosive for the electrical connection portion of the terminal-attached electric wire 10. As the thermoplastic resin, a thermoplastic resin having a softening point of 150 ° C. or higher measured according to JIS K6863 is used. The thermoplastic resin may be composed of one kind of thermoplastic resin, or may be composed of a combination of two or more kinds of thermoplastic resins.

  The thermoplastic resin contained in the resin film 16 preferably contains a polyamide resin. When polyamide resin is contained in the thermoplastic resin, adhesion to the terminal fitting 14 and the wire conductor 18 is improved. For this reason, the effect which suppresses that water penetrate | invades into the contact part of the terminal of the electric wire conductor 18 and the electrical-connection part of the terminal metal fitting 14 between the resin film 16 and the terminal metal fitting 14 or the electric wire conductor 18 improves, and anticorrosion performance is improved. improves. The effect is particularly high when the proportion of the polyamide resin in the thermoplastic resin is 70% by mass or more.

  Examples of the polyamide resin include a copolycondensate of dicarboxylic acid and diamine, and a ring-opening polycondensate of lactam. Examples of the dicarboxylic acid include an aliphatic dicarboxylic acid having an aliphatic hydrocarbon skeleton and an aromatic dicarboxylic acid having an aromatic hydrocarbon skeleton. As carbon number of dicarboxylic acid, it is preferable to exist in the range of 2-40. Examples of such dicarboxylic acids include adipic acid, sebacic acid, terephthalic acid, isophthalic acid, diphenic acid, naphthalenedicarboxylic acid, dimer acid obtained by dimerization of fatty acid, and the like. These may be used alone or in combination of two or more dicarboxylic acids.

  Examples of the diamine include an aliphatic diamine having an aliphatic hydrocarbon skeleton and an aromatic diamine having an aromatic hydrocarbon skeleton. As carbon number of diamine, it is preferable to exist in the range of 2-40. Examples of such diamines include ethylene diamine, propylene diamine, hexamethylene diamine, nonane diamine, methyl pentadiamine, p-phenylene diamine, and m-phenylene diamine. These may be used alone or in combination of two or more diamines.

  Examples of the lactam include ε-caprolactam, undecane lactam, and lauryl lactam. These may be used alone or in combination of two or more lactams.

  Among these, from the viewpoint of excellent flexibility, a copolycondensation product of an aliphatic dicarboxylic acid and an aliphatic diamine is more preferable.

  The thermoplastic resin contained in the resin film 16 may contain a polyolefin resin together with the polyamide resin. In the case where a polyolefin resin is used as the main material of the insulator 22, if the thermoplastic resin contains the polyolefin resin, the adhesion with the insulator 22 is improved. For this reason, the effect which suppresses that water penetrate | invades into the contact part of the terminal part of the electric wire conductor 18 and the electrical-connection part of the terminal metal fitting 14 between the resin film 16 and the insulator 22 improves, and anticorrosion performance improves. The effect is particularly high when the proportion of the polyolefin resin in the thermoplastic resin is 10% by mass or more.

  Examples of the polyolefin resin that may be included in the thermoplastic resin of the resin film 16 include the same as the polyolefin resin of the insulator 22. The polyolefin resin of the resin film 16 is preferably the same type of polyolefin resin as the polyolefin resin of the insulator 22 from the viewpoint of being superior in adhesion to the insulator 22. The same type of polyolefin resin refers to a case where one is polypropylene and the other is polypropylene, for example.

  When the polyolefin resin of the resin film 16 contains an acid-modified polyolefin resin, not only the adhesion to the insulator 22 is improved by the polyolefin resin, but also the adhesion to the terminal fitting 14 and the wire conductor 18 is improved. The acid number of the acid-modified polyolefin resin is preferably in the range of 5 to 60 KOHmg / g. More preferably, it is in the range of 20 to 55 KOH mg / g. When the acid number is in the range of 5 to 60 KOHmg / g, the adhesion to the terminal fitting 14 and the wire conductor 18 is particularly enhanced. From this viewpoint, the acid-modified amount of the acid-modified polyolefin resin is preferably in the range of 1 to 10% by mass.

  When the thermoplastic resin of the resin film 16 is a combination of a polyamide resin and a polyolefin resin, from the viewpoint of the balance between the adhesion to the terminal fitting 14 and the electric wire conductor 18 and the adhesion to the insulator 22, the polyamide resin and The ratio (mass%) of the polyolefin resin is preferably in the range of polyamide resin: polyolefin resin = 70: 30 to 90:10. More preferably, it is within the range of polyamide resin: polyolefin resin = 75: 25 to 85:15.

  The resin film 16 may be composed of only a thermoplastic resin, or may contain an additive as long as the physical properties are not impaired. Such an additive is not particularly limited as long as it is an additive generally used for a resin molding material. Specifically, antioxidants, inorganic fillers, metal deactivators (copper damage inhibitors), UV absorbers, UV masking agents, flame retardants, flame retardant aids, processing aids (such as lubricants and waxes), Carbon and other colorants (pigments, etc.), tackifiers, flexibility agents, impact resistance agents, organic fillers, diluents (solvents, etc.), thixotropic agents, antifoaming agents, leveling agents, etc. Can be mentioned.

  The resin film 16 can be formed by applying a material containing a thermoplastic resin in a flowable state to a predetermined place. Specifically, for example, the coating may be performed using a solvent for diluting the material containing the thermoplastic resin, or the coating may be performed by heating to the flow temperature of the material containing the thermoplastic resin.

  The terminal-attached electric wire 10 having the above configuration is fitted and connected to the terminal fitting of the mating terminal-attached electric wire in a state where the terminal fitting 14 is housed in a cavity for housing the terminal fitting 14 of the connector housing. The connector housing is made of a material excellent in moldability and dimensionality such as polybutylene terephthalate (PBT). In an in-vehicle environment, an in-vehicle distribution product such as a connector housing or an electric wire with a terminal may be placed in a place such as an engine room and exposed to a high temperature of 120 ° C. The electrical connection portion of the terminal fitting 14 housed in the cavity of the connector housing with the wire conductor 18 is covered with a resin film 16. At this time, the resin film 16 is disposed in contact with the inner wall of the connector housing or very close to the inner wall of the cavity. In the terminal-attached electric wire 10 according to the present invention, since the thermoplastic resin of the resin film 16 is a thermoplastic resin having a softening point of 150 ° C. or higher measured according to JIS K6863, the terminal fitting 14 is placed in the cavity of the connector housing. The thermoplastic resin used for the anticorrosion treatment does not adhere to the cavity inner wall of the connector housing even if it is exposed to such a high temperature while being housed in the housing. Therefore, since the thermoplastic resin as the anticorrosive agent is not peeled off and causes corrosion, the anticorrosion performance is excellent in reliability.

  The thermoplastic resin used for the anticorrosion treatment may have a softening point of 160 ° C. or higher in accordance with JIS K6863 from the viewpoint of being suitable for use in, for example, an in-vehicle environment exposed to a higher temperature of 150 ° C. preferable. More preferably, it is 170 degreeC or more. In addition, if the softening point of the thermoplastic resin is too high, the terminal fitting 14 or the electric wire conductor 18 may be thermally deteriorated when the thermoplastic resin is applied. From the viewpoint of preventing this, The softening point measured according to JIS K6863 is preferably 250 ° C. or lower.

  The resin film 16 may be subjected to a crosslinking treatment as necessary for the purpose of increasing heat resistance and mechanical strength. There are no particular limitations on the means of crosslinking, such as thermal crosslinking, chemical crosslinking, silane crosslinking, electron beam crosslinking, and ultraviolet crosslinking.

  As a physical property of the material containing the thermoplastic resin, it is preferable that the elongation is 10% or more from the viewpoint that the resin film 16 becomes difficult to peel even when a bending force is applied. More preferably, it is 30% or more, More preferably, it is 50% or more. The elongation in this case is a tensile elongation measured according to JIS K 6251. Further, from the viewpoint of ensuring adhesion with the insulator 22, the adhesive strength with the insulator 22 is preferably 1.0 MPa or more. More preferably, it is 1.5 MPa or more, More preferably, it is 2.0 MPa or more. The adhesive strength in this case is a tensile shear adhesive strength measured according to JIS K 6850. Further, from the standpoint of ensuring adhesion with the terminal fitting 14 and the electric wire conductor 18, the adhesive strength with the terminal fitting 14 and the electric wire conductor 18 is preferably 1.0 MPa or more. More preferably, it is 1.5 MPa or more, More preferably, it is 2.0 MPa or more. The adhesive strength in this case is a tensile shear adhesive strength measured according to JIS K 6850.

  The material containing the thermoplastic resin preferably has a viscosity at 180 ° C. in the range of 1000 to 5000 mPa · s from the viewpoint of coatability. The viscosity in this case is measured according to JIS Z8803. The viscometer used for the measurement is a rotational viscometer. The viscosity is more preferably in the range of 1500 to 4500 mPa · s.

  Since the material containing the thermoplastic resin is cooled and solidified after coating, it can be fixed to a place where it has been applied over a long period of time, as well as being free from stickiness during handling. Therefore, the anticorrosion effect can be maintained over a long period of time.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited by an Example.

(Preparation of anticorrosive composition)
The materials listed in Table 1 were used as evaluation materials. About what was comprised by the combination of two or more types of thermoplastic resins, it mixed at 180 degreeC with the twin-screw extruder, and was set as the composition for anticorrosives by shape | molding into a pellet form with a pelletizer. The materials used are as follows.

[Materials used]
・ Polyamide resin (PA)
Macromelt 6239 (Henkel, softening point 145 ° C)
Macromelt 6827 (Henkel, softening point 150 ° C)
Macromelt JP175 (Henkel, softening point 175 ° C)
・ Polyolefin resin (PP)
Maleic anhydride-modified polypropylene resin: [manufactured by Sanyo Chemical Co., Ltd., “Yumex 1010”, acid number 52 KOHmg / g]

  The softening point of each material is a value measured according to JIS K6863. That is, a predetermined ring is filled with a material to form a diameter of 15.9 mm and a thickness of 6.1 mm. The test piece is horizontally supported in a glycerin bath, and a 3.5 g, 9.5 mm sphere is placed in the center of the test piece. This is the temperature at which the bath temperature is raised at a rate of 5 ° C. per minute, the material softens and the spheres push the test piece.

(Adhesion test with connector housing)
Two connector housings molded with PBT generally used as a connector housing are used, and a sheet-like test piece (15 mm × 15 mm × 2 mmt) formed of the above-mentioned evaluation material is sandwiched between the connector housings and a load of 50 g is applied. After leaving at 120 ° C. for 3 hours, the temperature was returned to room temperature, and the load when the connector housing was peeled off from the sheet-like test piece at room temperature was measured with a tensile tester. A case where the load when the connector housing was peeled off was 40 N or less was judged as acceptable “◯”, and a case where the load was over 40 N was regarded as unacceptable “X”.

  Since each material of Comparative Examples 1 and 2 had a softening point of less than 150 ° C, the adhesion strength with the connector housing was large in the adhesion test with the connector housing, and it was suitable for use in an on-vehicle environment exposed to a high temperature of 120 ° C. I knew it was n’t there. On the other hand, since each material of the example had a softening point of 150 ° C. or higher, in the adhesion test with the connector housing, the adhesion strength with the connector housing was very small, and in an in-vehicle environment exposed to a high temperature of 120 ° C. It was confirmed that it was suitable for use.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

  For example, as shown in FIG. 4, a material containing a thermoplastic resin as an anticorrosive agent is applied from the terminal base portion 14b on the tip side to the wire barrel 14c with respect to the tip side conductor 18a, and the first resin film 16a is used to coat the tip side. The conductor 18a is covered, and a material containing a thermoplastic resin as an anticorrosive agent is applied from the wire barrel 14c to the insulator 22 on the rear end side of the rear end side conductor 18b, and the second resin film 16b is used to apply the rear end side. The conductor 18b may be covered.

  Moreover, although the electric wire 10 with a terminal of the said embodiment is equipped with the terminal metal fitting 14 (female-type terminal) which has the rectangular tube-shaped terminal connection part 14a, the terminal metal fitting (male type terminal) which has a tab-shaped terminal connection part. ). Further, the terminal fitting 14 of the electric wire with terminal 10 includes both the wire barrel 14c and the insulation barrel 14d, but may include only the wire barrel 14c.

  The terminal fitting 14 of the terminal-attached electric wire 10 is a so-called crimp terminal for crimping to the end of the electric wire. However, the connection method between the electric wire conductor 18 and the terminal fitting 14 is not limited to the crimping by the barrel, but pressure welding, ultrasonic welding A method such as soldering may be used.

  The insulated wire 12 may include a reinforcing wire (tension member) that reinforces the insulated wire together with the wire conductor 18. The reinforcing wire is preferably disposed inside the insulator 22 together with the wire conductor 18. The reinforcing wire may be arranged at the center of the stranded wire so as to be surrounded by the plurality of metal strands 20, or may be evenly arranged outside the stranded wire.

  The reinforcing wire may be a metal wire or a non-metallic wire such as an organic fiber. Examples of the metal wire material include copper alloy, titanium, tungsten, and stainless steel. Examples of the organic fiber material include aramid fibers.

  If the electrical connection is not affected, the resin film 16 may also be formed on the back side of the wire barrel 14c and the insulation barrel 14d.

DESCRIPTION OF SYMBOLS 10 Electric wire with terminal 12 Insulated electric wire 14 Terminal metal fitting 16 Resin film 18 Electric wire conductor 20 Metal element wire 22 Insulator

Claims (4)

  A terminal fitting is connected to the end of the insulated wire that is exposed by peeling off the insulator at the end of the insulated wire constituted by covering the outer periphery of the wire conductor with the insulator, and the end of the wire conductor and the terminal fitting The terminal-attached electric wire is characterized in that the electrical connection portion is covered with a thermoplastic resin having a softening point of 150 ° C. or higher measured according to JIS K6863.   The electric wire with a terminal according to claim 1, wherein the thermoplastic resin contains a polyamide resin.   The terminal-attached electric wire according to claim 2, wherein a proportion of the polyamide resin in the thermoplastic resin is 70% by mass or more.   The electric wire with a terminal according to any one of claims 1 to 3, wherein the terminal fitting is made of copper or a copper alloy, and the electric wire conductor is made of aluminum or an aluminum alloy.

Images