JP2013254577A - Covered wire with terminal and wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a covered wire with a terminal subjected to anti-corrosion treatment by an anticorrosive agent which is easy to flow during application and is hard after the application and is excellent in shape maintenance, and a wire harness.SOLUTION: In a covered wire 1 with a terminal, an electric connection part 6 has an anti-corrosion part covered with an anticorrosive agent 7 made of a resin composition, the anticorrosive agent 7 is a resin composition in which a thixotropy index shown in the following formula as a ratio of viscosity when a rotation number is low rotation of 0.2 rpm to viscosity when a rotation number of is high rotation of 2.0 rpm has 1.1 or more when measured by using a circular cone and parallel type rotational viscometer, the viscosity during low rotation of the anticorrosive agent is 900 mPa s or more, and the viscosity during high rotation of the anticorrosive agent is within the range of 600-100000 mPa s. A thixotropy index=viscosity during low rotation/viscosity during high rotation.

Description

  The present invention relates to a coated electric wire with a terminal and a wire harness, and more particularly relates to a coated electric wire with a terminal and a wire harness that are excellent in anticorrosive properties of an anticorrosion portion formed in an electrical connection portion between an electric wire conductor and a terminal fitting. .

  2. Description of the Related Art Conventionally, a covered electric wire in which the outer periphery of a conductor made of a soft material such as tough pitch copper is covered with a covering material made of an insulator has been widely used as an electric wire routed in a vehicle such as an automobile. In the terminal of this kind of covered electric wire, the terminal fitting of the terminal is electrically connected to the conductor exposed by peeling off the insulator. The terminal fitting electrically connected to the end of the covered electric wire is inserted and locked to the connector. A plurality of such covered electric wires with terminals are bundled to form a wire harness.

  In vehicles such as automobiles, wiring is usually performed in the form of a wire harness. When the wire harness is routed in an engine room or some indoor environments, rust is likely to occur at the electrical connection portion where the electric wire conductor and the terminal fitting come into contact with each other due to the influence of heat and water. Therefore, when wiring a wire harness in such an environment, it is necessary to prevent corrosion in the electrical connection portion.

  As a method of preventing corrosion in the electrical connection part, for example, a protrusion that is inclined toward the terminal connection box part side is formed between the terminal connection box part and the crimping part, and the resin of the anticorrosive is the terminal connection box part. A technique for preventing the inflow of the liquid is known (for example, see Patent Document 1).

Japanese Patent Application Laid-Open No. 2011-142004

  In recent years, the movement to improve fuel efficiency has been accelerated by reducing the weight of vehicles such as automobiles, and there is a demand for reducing the weight of the wire material constituting the wire harness. Therefore, the use of aluminum for the wire conductor has been studied.

  However, copper or a copper alloy having excellent electrical characteristics is generally used for the terminal fitting. Therefore, it is often used in a combination of an aluminum electric wire and a copper terminal fitting. If the material of the wire conductor and the terminal fitting are different, corrosion due to contact with different metals occurs at the electrical connection portion. This type of corrosion is more likely to occur than when the wire conductor and the terminal fitting are the same material. Therefore, an anticorrosive agent that can reliably prevent the electrical connection portion is required.

  The material used for the method of directly covering or coating the wire terminal electrical connection part to prevent corrosion is required to cover the wire element so that it is not exposed. Is required. On the other hand, in order to exhibit high anticorrosion performance, it is necessary that the anticorrosive agent penetrates sufficiently between the electric wires, and conflicting material properties are required.

  As a countermeasure, the technique described in Patent Document 1 uses a protrusion that is inclined between the terminal connection portion and the crimping portion and is used as a water blocking wall so that the wire is not exposed even with an anticorrosive that tends to flow. In addition, the flow of the anticorrosive agent into the terminal connection box portion is also suppressed. However, such a technique requires the production of a new terminal and has a problem that it cannot provide an inexpensive anticorrosion treatment.

  Therefore, in order to demonstrate high anticorrosion performance, it is easy to flow when applied to the electrical connection part, but after application, it is difficult to flow so that the wire element is not exposed, and an anticorrosive with excellent shape maintenance is required. Yes.

  The problem to be solved by the present invention is to provide a high-corrosion-preventing coating, which is easy to flow at the time of coating, difficult to be applied after coating, and coated with a terminal that has been subjected to anti-corrosion treatment with an anti-corrosive agent that has excellent shape maintainability. The object is to provide an electric wire and a wire harness.

In order to solve the above problems, the coated electric wire with terminal of the present invention is
In the covered electric wire with a terminal, the electric wire conductor of the covered electric wire in which the electric wire conductor is covered with a covering material has an electrical connection portion electrically connected to the terminal fitting of the terminal.
The electrical connection part has an anticorrosion part coated with an anticorrosive agent made of a resin composition,
The anticorrosive is measured at a low rotation speed of 0.2 rpm relative to the viscosity at a high rotation speed measured at a high rotation speed of 2.0 rpm when measured using a cone-parallel rotational viscometer. It is a resin composition having a thixotropy index represented by the following formula as a ratio of viscosity at low rotation of 1.1 or more,
The gist is that the anti-corrosive agent has a viscosity at a low rotation of 900 mPa · s or more, and the anti-corrosive agent has a viscosity at a high rotation of 600 to 100,000 mPa · s.
Thixotropic index = viscosity at low rotation / viscosity at high rotation

  In the above-described covered electric wire with a terminal, it is preferable that the anticorrosion part is formed by applying by an application method in which a shear stress is applied to the anticorrosive.

  In the above-mentioned covered electric wire with a terminal, it is preferable that the electric wire conductor contains a strand made of aluminum or an aluminum alloy.

  The wire harness of this invention makes it a summary to have said covered electric wire with a terminal.

  In the covered electric wire with a terminal of the present invention, the electric wire conductor of the covered electric wire in which the electric wire conductor is covered with a covering material has an electric connection part electrically connected to the terminal fitting of the terminal. The electrical connection part has an anticorrosion part coated with an anticorrosive agent made of a resin composition, and the anticorrosive agent has a rotational speed of 2. when measured using a cone-parallel rotational viscometer. A resin composition having a thixotropy index represented by the following formula having a thixotropy index of 1.1 or more as a ratio of a viscosity at a low rotation speed measured at a low rotation speed of 0.2 rpm to a viscosity at a high rotation speed measured at a high rotation speed of 0 rpm Since the viscosity at the time of low rotation of the anticorrosive agent is 900 mPa · s or more and the viscosity at the time of high rotation of the anticorrosive agent is in the range of 600 to 100,000 mPa · s, It is easy to flow at the time of cloth and easily penetrates into the gaps between the electric wires and the electrical connection part, and after application, the anticorrosive agent becomes difficult to flow and has excellent shape maintenance, and the anticorrosion performance at the electric wire connection part is excellent. Things are obtained.

  Since the coated electric wire with a terminal of the present invention can suppress the flow of the anticorrosive agent into the terminal connecting portion, it is not necessary to use a terminal formed with a protrusion having an inclination for preventing the inflow, and the existing terminal is diverted. Since it can, it can be provided at low cost.

  Since the wire harness of the present invention has the above-described coated electric wire with a terminal, a highly reliable wire harness excellent in the anticorrosion performance of the electric connection portion between the electric wire conductor and the terminal fitting can be obtained. Therefore, for example, the wire harness of the present invention can be suitably used for an engine room, which is a wet area such as an automobile, or some indoor environments.

FIG. 1 is an external perspective view showing an example of a covered covered electric wire according to the present invention. 2 is a longitudinal sectional view taken along line AA in FIG. FIG. 3 is a graph showing the measurement results of the viscosity of the anticorrosive used in Examples and Comparative Examples. FIG. 4 is an explanatory diagram for explaining the corrosion test methods of Examples and Comparative Examples.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an external perspective view showing an example of a coated electric wire with a terminal according to the present invention, and FIG. 2 is a longitudinal sectional view taken along line AA in FIG. As shown in FIGS. 1 and 2, the coated electric wire with terminal 1 according to the present invention includes an electric wire conductor 3 of the covered electric wire 2 in which the electric wire conductor 3 is covered with an insulator 4, and a terminal fitting 5 is electrically connected by an electric connection portion 6. Connected.

  The terminal fitting 5 includes a tab-like connection portion 51 made of an elongated flat plate connected to a counterpart terminal, a wire barrel 52 extending at the end of the connection portion 51, and an electric wire fixing portion made of an insulation barrel 53. 54.

  In the electrical connection portion 6, the insulator 4 at the end of the covered electric wire 2 is peeled off to expose the electric wire conductor 3, and the exposed electric wire conductor 3 is crimped to one side of the terminal metal fitting 5. And the terminal fitting 5 are connected. The wire barrel 52 of the terminal fitting 5 is crimped from above the wire conductor 3 of the covered electric wire 2 so that the wire conductor 3 and the terminal fitting 5 are electrically connected. Further, the insulation barrel 53 of the terminal fitting 5 is crimped from above the insulator 4 of the covered electric wire 2.

  Further, the range indicated by the alternate long and short dash line in FIG. 1 is formed as an anticorrosion part in which the surface of the electrical connection part 6 is covered with the anticorrosive 7. In addition, the anticorrosion part of FIG. 1 is shown in a state where the anticorrosive agent 7 is seen through. The anticorrosion part is in a state in which the anticorrosive 7 is filled in the inside of the electric wire conductor 3 or the contact portion between the electric wire conductor 3 and the terminal fitting 5, and moisture etc. enters from the outside and the terminal fitting or electric wire conductor. This prevents the metal parts from corroding.

  The part which the anticorrosive 7 of the anticorrosion part has coat | covered is the following parts. The front end side of the covered electric wire 2 is covered so as to slightly protrude from the front end of the electric wire conductor 3 to the connecting portion 51 side of the terminal fitting 5. The distal end side of the terminal fitting 5 is covered so as to protrude slightly from the end of the insulation barrel 53 to the insulator 4 side of the covered electric wire 2. The portion where the end of the covered wire 2 is peeled off and the wire conductor 3 is exposed is completely covered with the anticorrosive 7 and is not exposed to the outside.

  As shown in FIG. 2, the side surface of the terminal fitting 5 is also covered with the anticorrosive agent 7. The anticorrosive 7 is coated with a predetermined thickness along the outer peripheral shape of the terminal fitting 5 and the covered electric wire 2. 2 is not coated with the anticorrosive 7 on the back surface side of the terminal metal fitting 5 which is the lower side in FIG. 2 (for convenience, the wire crimping surface of the terminal metal fitting is the front surface and the opposite surface is the back surface).

  If the electrical connection is not affected, the back side of the wire fixing portion 54 of the terminal fitting 5 (including the back side of the wire barrel 52 and the insulation barrel 53) may be covered with the anticorrosive 7. .

The present invention has a great feature in that a thixotropic resin composition is used as the anticorrosive agent 7 for covering the electrical connection portion 6 and a resin composition having a specific viscosity range is used. That is, the viscosity of the anticorrosive before coating is 0 when the rotation speed is 0 with respect to the viscosity at the time of high rotation measured at a high rotation speed of 2.0 rpm when measured using a cone-parallel rotational viscometer. The thixotropy index, which is the ratio of the viscosity at low rotation measured at a low rotation of 2 rpm, is 1.1 or more. A more preferable thixotropy index is 1.2 or more. The thixotropy index is sometimes called a thixotropy index, a TI value, or the like. The thixotropy index can be obtained by the following formula.
Thixotropic index = Viscosity at low rotation / Viscosity at high rotation The above viscosity is a value measured at 25 ° C.

  The anticorrosive agent has a viscosity at the time of low rotation of 900 mPa · s or more. The viscosity at the time of low rotation is more preferably in the range of 1000 to 130000 mPa · s. If the viscosity of the anticorrosive agent at low rotation is less than 900 mPa · s, the viscosity after application is too low, and the anticorrosive agent may flow out, making it difficult to secure a sufficient anticorrosive agent at a predetermined location. There is.

  Moreover, the viscosity at the time of high rotation of the said anticorrosive agent exists in the range of 600-100000 mPa * s. The viscosity at the time of high rotation is more preferably in the range of 600 to 90000 mPa · s. When the viscosity of the anticorrosive at the time of high rotation is too high, the fluidity of the material becomes insufficient at the time of application, and it becomes difficult to fill a predetermined portion with a sufficient amount of the anticorrosive. Moreover, when the viscosity of the anticorrosive agent at high rotation is too low, the anticorrosive agent may flow out during application, and it may be difficult to secure a sufficient anticorrosive agent at a predetermined location.

  The electrical contact portion is applied to the electrical connection portion using the above-described anticorrosive agent so that shear stress is applied during application. When shear stress is applied, the viscosity decreases and the flow between the wire strands is good, the rust prevention performance is improved, and after coating or application, the viscosity increases and the shape maintainability increases and the wire connection part is Since it can be covered well, anticorrosion performance can be demonstrated.

  The anticorrosive 7 can be used without particular limitation as long as it is a resin composition having the above-described thixotropic property and capable of exhibiting anticorrosion performance. As the anticorrosive agent, for example, a resin composition in which a viscosity modifier for imparting thixotropy to a base resin can be used. Examples of the base resin include liquid rubber such as epoxy resin, polyurethane resin, acrylic resin, silicone resin, polyamide resin, polyester resin, cyanoacrylate resin, and polybden. The base resin may be either a thermosetting resin or a thermoplastic resin.

  The base resin of the anticorrosive 7 is preferably a curable resin that can be cured after being applied to the electrical connection portion 6.

  It does not specifically limit as a viscosity regulator which adjusts the thixotropic property of the anticorrosive agent 7, A well-known additive can be used. Examples of the viscosity adjusting agent include silica powder. The resin composition of the anticorrosive agent can be appropriately selected depending on the type of the base resin, the desired viscosity, and the like, the type of the viscosity adjusting agent, the addition amount, and the like.

  In addition to the base resin and the viscosity modifier, other additives such as coloring pigments, anti-aging agents, inorganic fillers, storage stabilizers, and dispersants may be added to the resin composition.

  It is preferable to apply the anticorrosive 7 so that the thickness after application is in the range of 0.01 to 0.1 mm. If the thickness of the anticorrosive 7 becomes too thick, it may be difficult to insert the terminal fitting into the connector. Moreover, when the thickness of the anticorrosive 7 becomes too thin, there exists a possibility that anticorrosion performance may become inadequate.

  Application | coating of the anticorrosive 7 can use well-known means, such as a dripping method, the apply | coating method, and the extrusion method. Further, when applying the anticorrosive agent, the temperature of the anticorrosive agent may be adjusted by heating, cooling or the like. The anticorrosive agent 7 is preferably applied by a coating method in which shear stress is applied. When a shearing stress is applied to the anticorrosive agent 7 during application, the viscosity decreases and it easily penetrates into gaps and the like.

  Hereinafter, the other structure of the covered electric wire 1 with a terminal is demonstrated. The electric wire conductor 3 of the covered electric wire 2 is made of a stranded wire formed by twisting a plurality of strands 3a. In this case, the stranded wire may be composed of one type of metal strand or may be composed of two or more types of metal strand. Moreover, the twisted wire may contain the strand etc. which consist of organic fibers other than a metal strand. Note that “consisting of one type of metal strand” means that all the metal strands constituting the stranded wire are made of the same metal material, and “consisting of two or more types of metal strands” This means that the wire contains metal wires made of different metal materials. Further, the stranded wire may include a reinforcing wire (tension member) for reinforcing the covered electric wire.

  Examples of the material of the metal wire constituting the wire conductor 3 include copper, a copper alloy, aluminum, an aluminum alloy, or a material obtained by applying various platings to these materials. Examples of the material of the metal strand as the reinforcing wire include copper alloy, titanium, tungsten, and stainless steel. Examples of the organic fiber as the reinforcing wire include aromatic polyamide fibers such as poly- (p-phenylene terephthalamide).

  Examples of the material of the insulator 4 include rubber, polyolefin, PVC, and thermoplastic elastomer. These may be used alone or in combination of two or more. Various additives may be appropriately added to the material of the insulator 4. Examples of the additive include a flame retardant, a filler, a colorant and the like.

  Examples of the material (material for the base material) of the terminal fitting 5 include various copper alloys and copper in addition to brass that is generally used. A part (for example, a contact) or the entire surface of the terminal fitting 5 may be plated with various metals such as tin, nickel, and gold. The anticorrosive agent of the present invention is particularly excellent in adhesion to tin plating.

  In order to manufacture the coated electric wire 1 with a terminal, the electric wire fixing part 54 of the terminal metal fitting 5 is first crimped to the terminal of the covered electric wire 2 which peeled off the tip and exposed the electric wire conductor 3 by a predetermined length, The wire conductor 3 and the terminal fitting 5 are connected. Next, an anticorrosive agent is applied to the surface of the connection portion between the wire conductor 3 and the terminal fitting 5. Next, the coated electric wire 1 with terminals is obtained by curing the anticorrosive agent under predetermined conditions.

  Hereinafter, the wire harness of the present invention will be described. The wire harness of this invention consists of what bundled the several covered electric wire containing the said covered electric wire 1 with a terminal. In the wire harness, a part of the covered electric wire may be the covered electric wire 1 with a terminal of the present invention, or all may be the covered electric wire 1 with a terminal of the present invention.

  In the wire harness, the plurality of covered electric wires may be bundled by tape winding, or may be packaged by an exterior component such as a round tube, a corrugated tube, or a protector.

  The wire harness of the present invention is suitable for being routed in a vehicle such as an automobile, and is particularly suitable for being routed in an engine room or a vehicle in a wet area. In such a place, since it is easy to receive the influence of a heat | fever and water, if a wire harness is routed in such a place, it will become easy to generate | occur | produce rust in the electrical connection part of the electric wire conductor 3 and the terminal metal fitting 5. FIG. According to the wire harness of this invention, generation | occurrence | production of the rust in the electrical connection part 6 of the electric wire conductor 3 and the terminal metal fitting 5 in the covered electric wire 1 with a terminal can be suppressed effectively.

  Examples of the present invention and comparative examples are shown below. In addition, this invention is not limited by these Examples.

(1) Production of covered electric wire For 100 parts by mass of polyvinyl chloride (degree of polymerization 1300), 40 parts by mass of diisononyl phthalate as a plasticizer, 20 parts by mass of calcium bicarbonate as a filler, and calcium zinc-based stabilizer 5 as a stabilizer A polyvinyl chloride composition was prepared by mixing parts by mass at 180 ° C. with an open roll and forming the pellets with a pelletizer.

  Next, using a 50 mm extruder, the polyvinyl chloride composition is 0.28 mm thick around a wire conductor (cross-sectional area 0.75 mm) made of an aluminum alloy twisted wire in which seven aluminum alloy wires are twisted together. Extrusion coated. This produced the covered electric wire (PVC electric wire).

(2) Preparation of covered electric wire with terminal After stripping the end of the above covered electric wire and exposing the electric wire conductor, a male crimp terminal fitting made of brass (tab width 0.64 mm) widely used for automobiles Was crimped and crimped to the end of the covered electric wire.

  Next, an anticorrosive agent having the composition shown in Tables 1 and 2 is applied to the electrical connection portion between the wire conductor and the terminal fitting, and the exposed wire conductor and the barrel of the terminal fitting are covered with various anticorrosive agents. The anticorrosion part was formed. Then, the hardening process for the predetermined time was performed on the following hardening conditions, the anticorrosion agent was hardened, and the covered electric wire with a terminal was produced. Each anticorrosive was applied to a thickness of 0.05 mm. Moreover, the viscosity of 0.2 rpm and 2.0 rpm of each anticorrosive of an Example and a comparative example was measured. The measurement results of the viscosity of the anticorrosive used in Examples and Comparative Examples are shown in Tables 1 and 2 and FIG. The viscosity was measured at 25 ° C. using a cone-parallel type rotational viscometer (trade name “TVE-25H” manufactured by Toki Sangyo Co., Ltd.).

Details of the component composition of the anticorrosive used in the Examples and Comparative Examples of Tables 1 and 2 are as follows.
A: Bisphenol A type epoxy resin, manufactured by Mitsubishi Chemical Corporation, trade name “EP828”
B: Bisphenol F-type epoxy resin, manufactured by DIC, trade name “Epiclon EXA-830CRP”
C: Amine curing agent, manufactured by Mitsui Chemicals, trade name “ST14”
D: Urethane prepolymer, manufactured by Nippon Polyurethane Co., Ltd., trade name “Coronate 4362” E: Curing agent, manufactured by Nippon Polyurethane Co., Ltd., trade name “Nipporan 4038”
F: Silica, manufactured by CABOT, trade name “CAB-O-SIL TS-720”

[Curing conditions]
Examples 1 to 5 and Comparative Examples 1 to 3: cured at 23 ° C. for 24 hours + 80 ° C. for 3 hours. Examples 6 and 7: cured at 120 ° C. for 1 hour. Comparative Example 4: cured at 120 ° C. for 1 hour.

〔Evaluation method〕
An evaluation test was performed using a coated electric wire with a terminal which was cured by applying an anticorrosive agent to the anticorrosive portions of Examples and Comparative Examples. The test was performed about the exposure condition of the electric wire, the permeability between the electric wires, and the anticorrosion performance. The test results are shown in Tables 1 and 2. Each evaluation test method is as follows.

[Exposed condition of wire element]
The exposure condition of the wire of the anticorrosion part after hardening was confirmed with a microscope. The case where the wire was not exposed was “◯”, and the case where it was exposed was “x”.

[Permeability between wires]
The cross section of the electric wire of the anticorrosion part after hardening was cut, and it was confirmed with the microscope whether there existed the flow of the anticorrosive agent between electric wire strands. If there was an inflow between the wires, “○” was assigned, and if there was no flow, “x” was assigned.

[Anti-corrosion performance]
As shown in FIG. 4, the covered covered electric wire 1 is connected to the + pole of the 12V power source 10, and the pure copper plate 20 (width 1 cm × length 2 cm × thickness 1 mm) is connected to the − pole of the 12V power source 10, The electrical connection part of the electric wire conductor of the electric wire 1 and a terminal metal fitting and the pure copper plate 20 were immersed in 300cc NaCl5% aqueous solution 30, and it supplied with electricity at 12V for 2 minutes. After energization, ICP emission analysis of NaCl 5% aqueous solution 30 was performed, and the elution amount of aluminum ions from the wire conductor of the covered coated wire 1 was measured. The case where the amount of elution was zero was determined to be acceptable “◯”, and the case where the amount of elution was detected even in a small amount was determined to be unacceptable “x”.

表１に示すように、実施例１〜６の端子付き被覆電線は、防食剤の電線素線への露出具合、浸透性、防食性能のいずれも合格であった。これに対し比較例１は低回転時及び高回転時の粘度がいずれも高いため、電線素線間の浸透性及び防食性能が不合格であった。また比較例２〜４は、高回転時の粘度が低いため、電線素線の露出が見られ防食性能が不合格であった。

As shown in Table 1, the coated electric wires with terminals of Examples 1 to 6 passed all of the degree of exposure of the anticorrosive agent to the wire element, the permeability, and the anticorrosion performance. On the other hand, since the comparative example 1 had high viscosity at the time of both low rotation and high rotation, the permeability between wire strands and the anticorrosion performance were unacceptable. Moreover, since Comparative Examples 2-4 had low viscosity at the time of high rotation, exposure of the wire element wire was seen and anticorrosion performance was disqualified.

  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, although the covered electric wire 1 with a terminal of the said Example uses the male terminal which has a tab-shaped connection part as the terminal metal fitting 5, it is not limited to this. For example, the terminal fitting may be a female terminal that can be fitted with a male terminal, or a tuning fork terminal. Further, the terminal fitting 5 may not be provided with the insulation barrel 53 but may be crimped only by the wire barrel 52. Further, the connection method between the electric wire conductor 3 and the terminal fitting 5 is not limited to crimping by a barrel, and may be a method such as pressure resistance welding, ultrasonic welding, or soldering. Moreover, in the said Example, although the electric wire conductor 3 which consists of a twisted wire was used, the electric wire conductor 3 may use a single core wire.

DESCRIPTION OF SYMBOLS 1 Coated electric wire with terminal 2 Coated electric wire 3 Electric wire conductor 4 Insulator 5 Terminal metal fitting 6 Electrical connection part 7 Anticorrosive

Claims (4)

In the covered electric wire with a terminal, the electric wire conductor of the covered electric wire in which the electric wire conductor is covered with a covering material has an electrical connection portion electrically connected to the terminal fitting of the terminal.
The electrical connection part has an anticorrosion part coated with an anticorrosive agent made of a resin composition,
The anticorrosive is measured at a low rotation speed of 0.2 rpm relative to the viscosity at a high rotation speed measured at a high rotation speed of 2.0 rpm when measured using a cone-parallel rotational viscometer. It is a resin composition having a thixotropy index represented by the following formula as a ratio of viscosity at low rotation of 1.1 or more,
A coated electric wire with a terminal, wherein the anticorrosive has a viscosity at a low rotation of 900 mPa · s or more, and the anticorrosive has a viscosity at a high rotation of 600 to 100,000 mPa · s.
Thixotropic index = viscosity at low rotation / viscosity at high rotation   2. The coated electric wire with a terminal according to claim 1, wherein the anticorrosion part is formed by an application method in which a shear stress is applied to the anticorrosion agent.   The said electric wire conductor contains the strand which consists of aluminum or aluminum alloy, The covered electric wire with a terminal of Claim 1 or 2 characterized by the above-mentioned.   A wire harness comprising the covered covered electric wire according to any one of claims 1 to 3.

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