JP2011113816A - Wire harness, and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire harness which is simple in structure, superior in connecting operation, and made of dissimilar metal, and to provide a method of manufacturing the wire harness. <P>SOLUTION: The wire harness 1 is constituted of a terminal 3 and a covered wire 5 or the like. Metal to constitute a conductive wire of the covered wire 5 and metal to constitute the terminal 3 are dissimilar metals. A surface of the terminal 3 (including surface side and back side) becomes a coated part 7 coated by coating nearly over the whole face except one uncoated part 9. A contact part of the inner face of a conductive wire crimping part 13 and a male terminal inside the terminal main body 15 becomes the uncoated part 9. The coated part 7 is coated by the coating having salt water resistance and forms an insulating layer. Accordingly, the inner face of the conductive wire crimping part 13 as the contact part with the conductive wire and the inner face of the terminal main body 15 as the contact part with the male terminal become the uncoated part 9 in order to secure electrical contact. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a wire harness used for an automobile or the like and a method for manufacturing the wire harness.

  Conventionally, in the fields of automobiles, OA equipment, home appliances, etc., conductive wires made of a copper-based material having excellent electrical conductivity have been used as power lines and signal lines. In particular, in the automobile field, the performance and functionality of vehicles are rapidly increasing, and various electric devices and control devices mounted on the vehicle are increasing. Therefore, along with this, the wire harness used tends to increase.

  On the other hand, while environmental problems are attracting attention, the weight reduction of automobiles is required. Therefore, an increase in weight accompanying an increase in the amount of wire harness used becomes a problem. For this reason, it replaces with the copper wire currently used conventionally and the lightweight aluminum electric wire attracts attention.

  Here, a connection terminal is used when connecting such electric wires or in a connection portion such as a device. However, even in the case of a wire harness using an aluminum core wire, copper having excellent electrical characteristics may be used for the terminal portion because of the reliability of the connecting portion. In such a case, an aluminum electric wire and a copper terminal are joined and used.

  However, when different metals are brought into contact, so-called electrolytic corrosion may occur due to the difference in standard electrode potential. In particular, since the standard electrode potential difference between aluminum and copper is large, corrosion on the aluminum side, which is electrically base, progresses due to the influence of water scattering and condensation on the contact portion. For this reason, the connection state between the electric wire and the terminal at the connection portion becomes unstable, and there is a risk that the electrical resistance increases due to an increase in contact resistance or a decrease in wire diameter, and further, the disconnection may occur, resulting in malfunction of the electrical component or stop of the function. is there.

  As a terminal for an aluminum electric wire to which such a dissimilar metal is connected, there is a product in which a terminal is filled with a resin material so as to cover a connection portion between the electric wire and the terminal (Patent Document 1).

JP 2004-111058 A

  However, in the method of Patent Document 1, it is necessary to completely cover the entire connector terminal with a resin material, and the amount of the resin material to be used is large, which requires cost. Therefore, a method for preventing contact corrosion with a simpler structure is desired.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a wire harness made of a dissimilar metal and a method of manufacturing the wire harness, which has a simple structure and excellent connection workability.

  In order to achieve the above-described object, the first invention is a wire harness in which an electric wire conductor and a terminal made of a different metal from the electric wire conductor are connected, and the surface of the terminal is at least the electric wire conductor. The wire harness is characterized in that a portion excluding the connecting portion and the connecting portion with the other terminal connected to the terminal is covered with a paint.

  The paint preferably has a standard film thickness after drying of 10 to 400 μm, a JIS K 7215 type D hardness of 40 to 80, and an adhesive strength at −40 ° C. to 125 ° C. of 3 MPa or more.

  It is desirable that the paint is any one of silicon, acrylic, urethane, polyamide, epoxy, fluorine, polyvinyl butyral, phenol, polyamide, acrylic rubber, or a mixture thereof.

  The connecting portion between the wire conductor and the terminal may be covered with a resin material. In this case, it is desirable that the resin material has an adhesive strength at −40 ° C. to 125 ° C. of 3 MPa or more, a tensile strength of 30 MPa or more, and an elastic modulus of 200 to 1000 MPa.

  According to the first invention, it is possible to obtain a wire harness that has a simple structure, has excellent joining workability, and can prevent contact corrosion. In particular, since the terminal is painted except for the contact portion with the wire conductor, most of the terminal is covered. Therefore, the surface area of the terminal (contact area with outside air or the like) can be reduced. Therefore, the corrosion rate of the contact corrosion accompanying the contact of different metals can be reduced.

  Moreover, if the film thickness and hardness of the paint are within a predetermined range, they will not be peeled off during processing or handling of the terminals. Further, since the adhesive strength of the paint is not less than a predetermined value, the paint does not peel off in the use environment.

  Moreover, if the connection part of an electric wire conductor and a terminal is coat | covered with the resin material, corrosion can be prevented more reliably. At this time, by setting the strength, elastic modulus, and the like of the resin material within predetermined ranges, the resin material does not peel off during use.

  2nd invention is a manufacturing method of a wire harness, Comprising: The coating material is apply | coated to the predetermined range of a strip | belt-shaped terminal raw material, the terminal expansion | deployment material is pierced from the said terminal raw material, The site | part to which the said coating material is not applied is a terminal. By processing the terminal deployment material into a terminal shape so as to be positioned at the wire crimping portion and the terminal connection portion, inserting a wire conductor into the wire crimping portion, and crimping the wire conductor by the wire crimping portion. The wire harness manufacturing method is characterized in that the terminal and the wire conductor are connected.

  Before inserting the electric wire conductor into the electric wire caulking portion, a resin material having a viscosity of 1000 to 38000 mPa · s according to JIS Z 8803 is applied to either the electric wire conductor or the electric wire caulking portion, and the electric wire caulking portion. After caulking the electric wire conductor, the resin material may be cured, or after inserting the electric wire conductor into the electric wire caulking portion, either the electric wire conductor or the electric wire caulking portion, and JIS Z 8803 After applying a resin material having a viscosity of 1000 to 38000 mPa · s and caulking the electric wire conductor with the electric caulking portion, the resin material may be cured.

  According to the 2nd invention, the wire harness which can prevent a contact corrosion using the conventional terminal processing process can be manufactured. In particular, since the terminal material is only painted, the manufacturing is easy.

  Moreover, contact corrosion can be more reliably prevented by applying a resin material to the joint before or after joining the terminal and the electric wire conductor and curing the joint after joining.

  ADVANTAGE OF THE INVENTION According to this invention, the structure which is simple and is excellent also in connection workability | operativity can provide the manufacturing method of the wire harness and wire harness by a dissimilar metal.

The perspective view which shows the wire harness 1. FIG. It is a figure which shows the terminal 3, (a) is a perspective view, (b) is sectional drawing. It is a figure which shows the surface side of a terminal raw material, (a) is a figure which shows the coating part 7 of the surface, (b) is a figure which shows the relationship between a terminal punching part and the coating part 7. FIG. It is a figure which shows the back surface side of a terminal raw material, (a) is a figure which shows the coating part 7 of a back surface, (b) is a figure which shows the relationship between a terminal punching part and the coating part 7. FIG. It is a figure which shows the terminal raw material 23 after a press, (a) is a front view, (b) is a back view. It is a figure which shows the connection part of the terminal 3 and the covered electric wire 5, (a) is sectional drawing, (b) is a top view. It is a figure which shows the state which provided the resin material 25 in the connection part of the element | child 3 and the covered electric wire 5, (a) is a front view, (b) is front sectional drawing, (c) is a top view.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the wire harness 1. The wire harness 1 includes a terminal 3 and a covered electric wire 5. The terminal 3 is made of copper or brass. A covered wire 5 is connected to the terminal 3. For the covered electric wire 5 which is an electric wire conductor, a conductive wire made of aluminum or aluminum alloy is used. That is, the metal constituting the conductor of the covered electric wire 5 and the metal constituting the terminal 3 are different metals. In addition, in the following description, the example which is a copper terminal and the covered electric wire 5 (it has a conductor) made from aluminum is demonstrated.

  The insulating coating is peeled off from the end of the covered electric wire 5 and the internal conductor is exposed. The covered portion of the covered electric wire 5 is crimped by the covered wire crimping portion 11 of the terminal. In addition, the conductor part exposed by peeling off the insulating coating is crimped by the conductor crimping part 13. In the lead wire crimping portion 13, the lead wire portion and the terminal 3 are electrically connected.

  A cylindrical terminal body 15 is provided at the tip of the terminal 3. FIG. 1 is an example showing a female terminal, and a male terminal is inserted into the terminal body 15 and electrically connected thereto. Details of the terminal 3 will be described later.

  The surface (including the front surface side and the back surface side) of the terminal 3 is a painted portion 7 in which paint is applied over substantially the entire surface except for some non-painted portions 9. The non-painted portion 9 is a contact portion between the inner surface of the lead wire crimping portion 13 and the male terminal inside the terminal body 15. The coating portion 7 is coated with a paint having salt water resistance and becomes an insulating layer. Therefore, the inner surface of the lead wire crimping portion 13 that is a contact portion with the lead wire and the inner surface of the terminal main body 15 that is a contact portion with the male terminal are non-painted portions 9 in order to ensure electrical contact.

  The coating material may be any of silicon-based, acrylic-based, urethane-based, polyamide-based, epoxy-based, fluorine-based, polyvinyl butyral-based, phenol-based, polyimide-based, acrylic rubber-based, or a mixture thereof.

  Next, the terminal 3 will be described in detail. 2A and 2B are diagrams showing the terminal 3, in which FIG. 2A is a perspective view and FIG. 2B is a cross-sectional view. As described above, the terminal 3 includes the covered wire crimping portion 11, the conductive wire crimping portion 13, the terminal body 15, and the like. The inner surface side of the conductor crimping portion 13 for crimping the conductor of the coated electric wire connected to the terminal 3 is a non-coating portion 9. In addition, a terminal contact portion 19 that comes into contact with the male terminal is provided inside (lower part) of the terminal body 15. That is, the male terminal connected to the terminal 3 contacts the contact surface (upper surface) of the terminal contact portion 19, both side surfaces (inner surface) of the terminal body 15, and the upper surface (inner surface) of the terminal body 15. For this reason, the contact surface (upper surface) of the terminal contact portion 19, both side surfaces (inner surface) of the terminal body 15, and the upper surface (inner surface) of the terminal body 15 become the non-coating portion 9.

  Next, a method for manufacturing the terminal 3 will be described. 3 and 4 are diagrams showing the band-shaped terminal material 21, FIGS. 3A and 3B show the surface side of the terminal material 21, and FIGS. 4A and 4B are diagrams. FIG. 3 is a view showing the back side of the terminal material 21. A predetermined portion of the terminal material 21 is preliminarily coated (printed) with a paint to form a painted portion 7 and a non-painted portion 9. In order to form the non-painted portion 9, for example, the portion of the terminal material 21 where the non-painted portion is desired to be formed may be masked in advance.

  As shown in FIG. 3A, on the surface side of the terminal material 21 (the surface constituting the outer surface of the terminal 3), the coating portion 7 and the non-coating portion 9 are formed in a band shape. FIG. 3B is a diagram showing the press shape when the terminal material 21 shown in FIG. As shown in FIG.3 (b), the non-coating part 9 is located in the front-end | tip part vicinity of a terminal press type | mold. In addition, although mentioned later, the site | part corresponding to the non-coating part 9 is a site | part corresponding to the upper surface side of the terminal contact part 19 (FIG.2 (b)) after the terminal 3 process.

  Similarly, as shown in FIG. 4A, on the back side of the terminal material 21 (the surface constituting the inner surface of the terminal 3), the coating portion 7 and the non-coating portion 9 are formed in a strip shape and a predetermined shape. FIG. 4B is a diagram showing the press shape when the terminal material 21 shown in FIG. As shown in FIG.4 (b), the non-coating part 9 is located in the center vicinity of a terminal press type | mold. In addition, although mentioned later, the site | part corresponding to the non-coating part 9 is a site | part corresponding to the conductor crimping | compression-bonding part 13 (FIG. 2) inner surface, the both-sides inner surface of the terminal main body 15, and the upper inner surface of the terminal main body 15 after the terminal 3 process. .

  FIG. 5 is a diagram showing a post-press terminal material 23 (terminal expansion material) pressed from the terminal material 21, and FIG. 5 (a) is a diagram showing a surface (a surface constituting the outer surface of the terminal 3). FIG. 5B is a diagram showing the back surface (the surface constituting the inner surface of the terminal 3). As described above, on the surface of the post-press terminal material 23, the position of the non-coating portion 9 corresponds to the portion corresponding to the terminal contact portion 19 (the upper surface side), and on the back surface of the post-press terminal material 23, the conductor The crimping portion 13 (inner surface side) and the terminal body 15 (inner surface side) correspond to the position of the non-coating portion 9. The post-pressing terminal material 23 is processed into a terminal shape by bending or the like and connected to the covered electric wire 5, whereby the wire harness 1 is manufactured.

  6A and 6B are diagrams showing a state in which the terminal 3 and the covered electric wire 5 are connected, FIG. 6A is a cross-sectional view, and FIG. 6B is a plan view. As described above, the covered portion of the covered electric wire 5 is crimped by the covered wire crimping portion 11. The conducting wire 25 is crimped by the conducting wire crimping portion 13. Since the inner surface of the conducting wire crimping portion 13 is the non-coating portion 9, the conducting wire 25 and the conducting wire crimping portion 13 are electrically connected. Further, as described above, since the contact surface with the male terminal on the inner surface of the terminal body 15 is also the non-painted portion 9, the terminals are electrically connected when the male terminal is inserted.

  The part other than the part (contact part) electrically connected to other members becomes the coating part 7 including the inner and outer surfaces of the terminal 3. That is, the surface area of the metal surface of the terminal 3 that comes into contact with the outside air (outside environment) is reduced. Usually, the corrosion rate of contact corrosion due to contact of dissimilar metals with different standard electrode potentials is proportional to the area ratio of the surface area of the noble metal to the surface area of the base metal in contact (surface area in contact with external corrosion atmosphere or liquid). To do. Therefore, the surface of the terminal made of, for example, copper, which is a noble metal, is covered with the coating portion 7 and is made smaller than the surface area of the conductive wire 25 which is a base metal, so that the corrosion rate can be reduced and the anticorrosive effect is obtained. be able to.

  In addition, as for coating, it is desirable that the average film thickness at the time of drying is 10 micrometers-400 micrometers. This is because when the film thickness is less than 10 μm or more than 400 μm, the coated portion 7 may be peeled or cracked during terminal processing. In order to obtain the above film thickness, it is desirable that the viscosity of the paint before coating according to the method for measuring the viscosity of fluid according to JIS Z 8803 is 100 mPa · s or more and 10,000 mPa · s or less. This is because the film thickness is not constant due to the high viscosity of the paint.

  Moreover, as for the hardness of coating, it is desirable that the type D hardness of JISK7215 is 40-80. This is because if the hardness is too small or too large, the coating may be destroyed during the terminal processing.

  Furthermore, the adhesive strength of the coating is desirably 3 MPa or more at −40 ° C. to 125 ° C. This is because if the adhesive strength is low, the paint may peel off during use and processing.

  As described above, according to the wire harness 1 of the present embodiment, the corrosion protection effect can be obtained efficiently by reducing the corrosion rate of the contact corrosion accompanying the contact of different metals. That is, the idea is different from the conventional one in which the entire contact portion is covered to prevent corrosion, and the anticorrosion speed is suppressed by reducing the surface area ratio of both metals. In particular, since only the coating portion 7 is provided in advance on the terminal material, a special process is not required, and the manufacturing can be performed easily.

  Next, the wire harness 30 according to the second embodiment will be described. 7A and 7B are diagrams showing the wire harness 30. FIG. 7A is a side view, FIG. 7B is a side sectional view, and FIG. 7C is a plan view. In the following description, components having the same functions as those of the wire harness 1 shown in FIG. The wire harness 30 has substantially the same configuration as the wire harness 1, but differs in that a resin material 27 is provided.

  In the wire harness 30, a salt water resistant (insulating) resin material 27 is provided at a joint portion between the lead wire 25 and the lead wire crimping portion 13 in order to obtain an anticorrosion effect. That is, as shown in FIGS. 7B and 7C, the resin material 27 is filled up to the inside of the terminal 3, and the exposed contact portions (the conductive wire 25 and the conductive wire crimping portion 13) of the dissimilar metal are covered. The The resin material 27 desirably has an adhesive strength of 3 MPa or more at −40 ° C. to 125 ° C., a tensile strength of 30 MPa or more, and an elastic modulus of 200 to 1000 MPa. If the adhesive strength of the resin material 27 is low, the resin material 27 may be peeled off during use or the like, and if the elastic modulus and tensile strength are out of the above ranges, the resin material 27 is likely to be damaged or peeled off. Absent. The water absorption rate of the resin material 27 (boiling water in 2 hours) is desirably 5% or less.

  As such a resin material 27, for example, silicon-based, acrylic-based, urethane-based, polyamide-based, epoxy-based, or a mixed resin thereof can be used.

  In order to provide the resin material 27, for example, the terminal 3 and the covered electric wire 5 manufactured by the above-described method are connected, and the resin before curing so as to cover the conductor 25 and the conductor crimping portion 13 in the connected state. The material 27 is applied. In this case, as the resin material before curing, a material whose viscosity is adjusted in the range of 5000 mPa · s to 20000 mPa · s according to the method for measuring the viscosity of the fluid in JIS Z 8803 is used. If the viscosity is too low, the resin material 27 flows after application of the resin material 27. If the viscosity is too large, the resin material 27 is not filled in the gap in the vicinity of the joint between the conductor 25 and the conductor crimping portion 13. This is because it is difficult to completely cover the connection portion.

  After application of the resin material 27, the resin material 27 is cured by applying ultraviolet rays, heat, or the like so that the adhesive strength, tensile strength, and elastic modulus as described above can be obtained. As described above, the resin material 27 is provided. In addition, since the protrusion 3 is formed in the terminal 3 at the boundary between the terminal body 15 and the connecting portion of the covered wire 5, the protrusion 17 serves as a weir and the resin material 27 does not flow into the terminal body 15. .

  According to the wire harness 30 concerning 2nd Embodiment, the effect similar to the wire harness 1 can be acquired. Moreover, since the resin material 27 is provided and the contact part of the conducting wire 25 and the terminal 3 is coat | covered, corrosion can be prevented more reliably. In FIG. 7, the resin material 27 is provided so as to cover the entire connection portion. However, as described above, the coating portion 7 is formed on the terminal 3 and the corrosion rate is suppressed. Only the exposed part of the paint part 9 may be covered. Therefore, the amount of resin material 27 used can be minimized. Needless to say, even if the resin material 27 is damaged, the contact corrosion can be suppressed by the above-described anticorrosion effect by suppressing the corrosion rate.

  Further, the resin material 27 can be applied before the conductor 25 is connected to the terminal 3. For example, the resin material 27 may be applied in advance to the conductor 25 or the non-coating portion 9 of the conductor crimping section 13, and the conductor 25 and the terminal 3 may be connected in this state. When the applied resin material 27 is caulked by the conductive wire crimping portion 13, the resin material 27 is pushed out to the periphery, and the conductive wire 25 and the conductive wire crimping portion 13 are electrically connected.

  The resin material 27 extruded to the periphery flows in the gap between the lead wire crimping portion 13 and the covered wire crimp portion 11 or in the direction of the distal end portion of the lead wire 25. In addition, when providing the resin material 27 reliably before the conducting wire 25 and the terminal 3 are connected, the viscosity according to the method for measuring the viscosity of the fluid in JIS Z 8803 is used as the resin material before curing, 1000 mPa · s to 38000 mPas. -The thing adjusted to the range of s is used. If the viscosity is too low, the resin material 27 flows before connection, and if the viscosity is too large, the resin material 27 is completely pushed out without being pushed out into the gap in the vicinity of the joint between the conductor 25 and the conductor crimping portion 13. This is because it becomes difficult to coat the film.

  Using a wire harness in which the terminal 3 having the painted portion 7 and the non-painted portion 9 and the coated conducting wire 5 as shown in FIG. 6 were joined, the resistance fluctuation value in a corrosive environment was investigated. In the wire harness to be used for the test, the terminal is made of copper, and the conductor of the covered electric wire is made of aluminum.

  First, a paint whose viscosity is adjusted to 10000 mPa · s or less according to the method for measuring the viscosity of fluid in JIS Z 8803 is applied in advance to a predetermined position of the terminal to be used (position shown in FIGS. 1 to 5, etc.). . As a coating material, a silicone-based, acrylic-based, urethane-based, polyamide-based, or epoxy-based resin is used, and the dried coating film has a JIS K 7215 type D hardness of 40 to 80 or more. It was formulated. In addition, all the adhesive strength in -40 degreeC-125 degreeC after drying was 3 Mpa or more. Moreover, the thickness of the coating film after drying was changed from 10 to 600 or more.

  The test conditions were 120 ° C high temperature exposure 120 hours, salt spray (5% NaCl) 35 ° C x 96 hours, high temperature and high humidity 85 ° C, 95% RH x 96 hours reliability test, and fluctuation of contact resistance before and after the test. The rate was investigated. The results are shown in Table 1.

  A resistance fluctuation value of 2.5 mΩ or less was evaluated as acceptable (◯ in the table), and a resistance fluctuation value exceeding 2.5 mΩ was evaluated as unacceptable (× in the table). As is clear from Table 1, the standard film thickness after drying is 10 to 400 μm, the type D hardness of JIS K 7215 is 40 to 80, and the adhesive strength at −40 ° C. to 125 ° C. is 3 MPa or more. . 4-No. No. 6 corrosion was suppressed. On the other hand, the resistance fluctuation value of 2.5 mΩ or more was obtained when the above range was exceeded. Although detailed results are omitted, it has been found that the same high anticorrosion effect can be obtained if the above-described characteristic values are satisfied regardless of the type of paint.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

1, 30 ......... Wire harness 3 ......... Terminal 5 ......... Coated conductor 7 ......... Coating part 9 ......... Non-coating part 11 ......... Coated wire crimping part 13 ......... Wire crimping part 15 ... ... Terminal body 17 ... ... Protrusion 19 ... ... Terminal contact portion 21 ... ... Terminal material 23 ... ... Terminal material 25 after pressing ... ... Conductor 27 ... ... Resin material

Claims (8)

An electric wire conductor to be insulated and the electric wire conductor is a wire harness to which a terminal made of a dissimilar metal is connected,
The wire harness characterized in that at least a portion of the surface of the terminal is coated with a paint except for a connection portion with the wire conductor and a connection portion with another terminal connected to the terminal.   The paint has a standard film thickness after drying of 10 to 400 μm, a JIS K 7215 type D hardness of 40 to 80, and an adhesive strength at −40 ° C. to 125 ° C. of 3 MPa or more. The wire harness according to claim 1.   The paint is any of silicon, acrylic, urethane, polyamide, epoxy, fluorine, polyvinyl butyral, phenol, polyamide, acrylic rubber, or a mixture thereof. The wire harness according to claim 1 or claim 2.   The wire harness according to any one of claims 1 to 3, wherein a connecting portion between the electric wire conductor and the terminal is covered with a resin material.   5. The wire harness according to claim 4, wherein the resin material has an adhesive strength at −40 ° C. to 125 ° C. of 3 MPa or more, a tensile strength of 30 MPa or more, and an elastic modulus of 200 to 1000 MPa. A method of manufacturing a wire harness,
Apply paint to a predetermined area of the belt-shaped terminal material, punch out the terminal deployment material from the terminal material,
The terminal unfolding material is processed into a terminal shape so that the portion where the paint is not applied is located in the wire crimping portion and the terminal connection portion of the terminal, and the wire conductor is inserted into the wire crimping portion, The method of manufacturing a wire harness, wherein the terminal and the electric wire conductor are connected by crimping the electric wire conductor by an electric wire crimping portion. Before inserting the electric wire conductor into the electric wire crimping part, either the electric wire conductor or the electric wire caulking part,
A resin material having a viscosity of 1000 to 38000 mPa · s according to JIS Z 8803 is applied,
The method of manufacturing a wire harness according to claim 6, wherein the resin material is cured after the wire conductor is crimped by the wire crimping portion. After inserting the wire conductor into the wire crimping portion, either the wire conductor or the wire crimping portion,
Apply a resin material having a viscosity according to JIS Z 8803 of 5000-20000 mPa · s,
The method of manufacturing a wire harness according to claim 6, wherein the resin material is cured after the wire conductor is crimped by the wire crimping portion.

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