JP2011113708A - Electric wire with terminal and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wire with a terminal excellent in corrosion resistance, excellent in connection stability by preventing an inflow into a connection part of a terminal, applicable to various terminal shapes, capable of being manufactured easily, and applied with anti-corrosion treatment, and to provide a method of manufacturing the electric wire with the terminal. <P>SOLUTION: When a conductor 21 is connected to a wire barrel 32 and an exposed part of the conductor 21 is covered with an anticorrosive 4, the anticorrosive is discharged to cover the exposed part of the conductor 21 while air 71 is sprayed from an air tube 7 as an inflow prevention means for preventing the inflow of the anticorrosive 4 into an electric connection part 31, and an electric wire with a terminal is manufactured. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electric wire with a terminal subjected to anticorrosion treatment and a method for producing the same.

  Conventionally, as an electric wire with a terminal used for, for example, a vehicle wiring harness, a copper terminal connected to an end of a conductor made of a copper electric wire has been used. When a copper wire is replaced with an aluminum wire, the contact portion between the aluminum wire and the copper terminal has a problem of contact corrosion between different metals, and therefore it is necessary to perform a corrosion prevention treatment on the contact portion between the terminal and the conductor.

  In the case of a conventional copper wire, for the purpose of preventing water from penetrating into the wire coating, as shown in FIG. 13, silicone rubber is applied to the portion 105 where the terminal 103 and the copper wire 102 are pressure-bonded and cured. It is known to provide a waterproof structure for an automobile harness by providing a sealing material 104 (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-232935

  Although it is conceivable to use the waterproof treatment described in the above-mentioned Patent Document 1 for anticorrosion measures for aluminum electric wires, there are the following problems.

  As a measure against corrosion of the aluminum electric wire, it is necessary to completely cover the portion where the conductor 106 is exposed with a corrosion inhibitor (sealant). Even if the sealing material 104 covers the gap between the conductors, if the tip of the conductor 106 is exposed to the outside and a portion that is in contact with the terminal 103 remains, it is inevitable that corrosion proceeds from that portion. . However, if a non-conductive and fluid material such as liquid silicone rubber is used as an anti-corrosion agent, the anti-corrosion agent has high fluidity, so that the coated anti-corrosion agent flows easily and completely covers the exposed portion of the conductor. It ’s difficult.

  When a highly fluid anticorrosive agent is applied to the tip of the conductor 106, the anticorrosive agent may flow into the terminal 103 and hinder connection of the terminal. This is a big problem especially depending on the shape of the terminal. As described in Patent Document 1, if the shape of the terminal 103 is a bolt-fastened round terminal shape, it may not be a problem at the time of connection, but when using a male-female fitting type terminal It will be a big problem. For example, if the anticorrosive agent flows into the female terminal fitting portion side, connection stability is impaired. That is, when an anticorrosive agent adheres to the back side of the spring set inside the female terminal, the anticorrosive agent prevents deformation of the spring, and thus the insertion force of the terminal increases. Further, when the anticorrosive agent adheres to the top plate side of the terminal or the spring surface, the contact area increases because the area in contact with the male terminal decreases.

  An object of the present invention is to solve the above-mentioned problems of the prior art, and is excellent in anticorrosive property, and further prevents inflow of an anticorrosive agent to the connecting portion of the terminal, has excellent connection stability, and various terminals. An object of the present invention is to provide a terminal-attached electric wire that has been subjected to anticorrosion treatment and can be easily manufactured, and a method for manufacturing the electric wire.

In order to solve the above problems, a terminal-attached electric wire according to the present invention includes a covered electric wire in which a conductor is covered with an insulator, an electric connecting portion for connecting to a counterpart terminal, and a crimping portion for connecting the conductor. In the electric wire with a terminal in which the conductor is connected to the pressure-bonding portion, and the exposed portion of the conductor is covered with an anticorrosive agent to be subjected to anticorrosion treatment,
The gist is that the anticorrosion treatment by the anticorrosive agent is performed using inflow prevention means for preventing the anticorrosive agent from flowing into the electrical connection portion, and the anticorrosion agent is not attached to the electrical connection portion. To do.

  In the electric wire with a terminal of the present invention, the electrical connection portion of the terminal is a female terminal of a male-female fitting terminal, a through hole is provided in the bottom plate of the electrical connection portion, or the electrical connection portion It is preferable that a notch piece in which a part of the wall surface is notched is erected inward of the electrical connection portion and is formed as a damming wall for preventing an anticorrosive agent from flowing into the electrical connection portion.

  Moreover, in the electric wire with a terminal, it is preferable that the notch piece is formed by notching a bottom plate of the electrical connection portion, and a notch portion of the bottom plate is formed as a through hole.

  In the electric wire with terminal of the present invention, the conductor of the covered electric wire is preferably aluminum, or the anticorrosive is a material that melts by heating and solidifies by cooling.

The method for manufacturing a terminal-attached electric wire of the present invention includes a covered electric wire in which a conductor is covered with an insulator, an electric connection portion for connecting to a counterpart terminal, and a terminal including a crimping portion for connecting the conductor, In the method in which the conductor is connected to the crimping portion, the exposed portion of the conductor is covered with an anticorrosive agent, and subjected to anticorrosion treatment to produce a terminal-attached electric wire,
When the anticorrosion treatment is applied to the exposed portion of the conductor, the conductor is prevented from flowing into the electrical connection portion by using inflow prevention means for preventing the anticorrosion agent from flowing into the electrical connection portion. The main point is to cover the exposed part of the film.

  In the method for manufacturing a terminal-attached electric wire according to the present invention, the inflow preventing means covers the exposed portion of the conductor with the anticorrosive agent while spraying fluid onto the covering portion from the electric connecting portion side, thereby the electric connecting portion. A method of preventing the anticorrosive from flowing into the side can be used. The fluid can be heated.

  In the method for manufacturing a terminal-attached electric wire according to the present invention, the inflow prevention means includes a jig disposed between the electric connection portion and the exposed portion of the conductor and is covered with an anticorrosive agent, thereby the electric connection portion side. A method for preventing the anticorrosive agent from flowing in can be used. The material of the jig is preferably silicone rubber.

  In the method for manufacturing a terminal-attached electric wire according to the present invention, the inflow prevention means includes providing a through hole on a bottom surface of the electrical connection portion and discharging the anticorrosive agent from the through hole to the outside, thereby allowing the electrical connection portion to A method for preventing the anticorrosive from flowing in can be used.

  In the method for producing a terminal-attached electric wire of the present invention, the anticorrosive is a material that melts by heating and solidifies by cooling, and using a heating means for heating the coated portion that is coated with the anticorrosive from the outside, It is preferable to coat the coating portion with an anticorrosive agent.

  The electric wire with a terminal of the present invention is excellent in anticorrosion because the exposed portion of the conductor is coated with an anticorrosive agent and thus anticorrosion treatment is performed. Furthermore, the terminal-attached electric wire of the present invention has been subjected to anticorrosion treatment with the anticorrosive agent using an inflow prevention means for preventing the anticorrosive agent from flowing into the electrical connection portion, and the anticorrosive agent is applied to the electrical connection portion. Since it does not adhere, there is no possibility that the insertion force at the time of connecting the terminals due to the adhesion of the anticorrosive agent to the electrical connection portion increases. Further, the electric wire with terminal of the present invention is excellent in connection stability because the contact area does not decrease due to the adhesion of the anticorrosive agent to the electrical connection portion, and thus the electrical connection can be reliably performed. .

  The method for manufacturing a terminal-attached electric wire according to the present invention uses an inflow prevention means for preventing the anticorrosive from flowing into the electrical connection portion when the exposed portion of the conductor is subjected to anticorrosion treatment. Since the exposed portion of the conductor is covered so as not to flow into the electrical connection portion, it is possible to reliably manufacture an electric wire with a terminal excellent in corrosion resistance and connection stability, corresponding to various terminal shapes. It is possible to obtain the effect that it is easy to manufacture

FIG. 1 is an external perspective view showing an example of a terminal-attached electric wire according to the present invention. 2 is a BB longitudinal sectional view of the electric wire with terminal of FIG. FIG. 3 is explanatory drawing of the anticorrosion treatment process of 1st Example of the manufacturing method of the electric wire with a terminal of this invention. FIG. 4 is an explanatory view of an anticorrosion treatment process of a modification of the first embodiment of the method of manufacturing the electric wire with terminal of the present invention. FIG. 5 is explanatory drawing of the anticorrosion treatment process of the modification of 1st Example of the manufacturing method of the electric wire with a terminal of this invention. FIG. 6 is explanatory drawing of the anticorrosion treatment process of 2nd Example of the manufacturing method of the electric wire with a terminal of this invention. FIG. 7A is a cross-sectional view showing a state before the anticorrosive agent is applied in the manufacturing method of FIG. 6, and FIG. 7B is a cross-sectional view showing a state after the anticorrosive agent is applied. FIG. 8 is explanatory drawing of the anticorrosion treatment process of 3rd Example of the manufacturing method of the electric wire with a terminal of this invention. FIG. 9 is a bottom view of FIG. 10 is a cross-sectional view of FIG. FIG. 11 is an explanatory view of the anticorrosion treatment process of a modification of the third embodiment of the electric wire with terminal of the present invention. It is a graph which shows the relationship between the viscosity of an example of an anticorrosive, and temperature. It is a top view which shows the conventional electric wire with a terminal.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an appearance of an example of an electric wire with a terminal of the present invention, and FIG. 2 is a BB vertical sectional view of the electric wire with a terminal of FIG. The electric wire with a terminal 1 shown in FIGS. 1 and 2 is connected to a covered electric wire 2 in which a conductor 21 made of an aluminum wire is covered with an insulator 22 such as polyolefin or PVC, and an end of the covered electric wire 2. Terminal 3 is provided. In the covered electric wire 2, the insulator 22 at the end is peeled off, and the conductor 21 exposed from the insulator 22 is connected to and electrically connected to the terminal 3. In the covered electric wire 2, an end conductor 21 and an insulator 22 are crimped to the terminal 3.

  The covered electric wire 2 using an aluminum wire as the conductor 21 is suitable as an electric wire for high-power applications, but there is a risk of corrosion when the terminal 3 is a dissimilar metal such as copper. In the present invention, since the exposed portion of the conductor 21 is completely covered with the anticorrosive agent, the effect of preventing corrosion is great and can be suitably used for an aluminum wire.

  The terminal 3 is made of a metal material such as copper. In the terminal 3, an electrical connection portion 31, a wire barrel 32, and an insulation barrel 33 are arranged with an interval in this order along the axial direction of the terminal 3. The electrical connection portion 31, the wire barrel 32, and the insulation barrel 33 are connected by a bottom plate portion 31a and are integrally formed. The wire barrel 32 forms a crimping portion that connects the conductor 21 and the terminal 3.

  The electrical connection part 31 of the terminal 3 is formed as a female terminal of a male-female fitting terminal. The electrical connection portion 31 is surrounded by a bottom plate portion 31a, left and right side plate portions 31b and 31c, and a top plate portion 31d, and is formed in a cylindrical shape having a rectangular cross section. When the terminal 3 is attached to a connector housing (not shown) or the like and mated with a mating connector having a male terminal, the electrical connection portion 31 formed of a female terminal is coupled with the male terminal of the mating connector to be electrically connected. Connection can be made.

  A joining auxiliary component (not shown) such as a spring can be attached to the inside of the cylindrical portion of the female terminal-shaped electrical connection portion 31 in order to increase the joining force with the male terminal.

  The wire barrel 32 and the insulation barrel 33 of the terminal 3 are for fixing the covered electric wire 2 to the terminal. The wire barrel 32 is formed as an upstanding piece that stands up from the bottom plate 31 a, covers the periphery of the conductor 21 of the covered electric wire 2, is crimped from the outside, and is crimped to the conductor 21. The insulation barrel 33 is formed as an upright piece that stands up from the bottom plate, covers the periphery of the insulator 22 of the covered electric wire 2, is crimped from the outside, and is crimped to the insulator 22. The covered electric wire 2 is crimped by an insulation barrel 33 and a wire barrel 22 and connected to the terminal 3.

  The terminal 3 is subjected to anticorrosion treatment on the portion where the conductor 21 is exposed to the outside after the coated electric wire 2 is crimped. The conductor 21 is entirely covered with the anticorrosive 4 and is formed so that there is no portion exposed to the outside. Thus, since the end of the conductor 21 is completely covered with the anticorrosive 4 and there is no portion where the conductor 21 is exposed to the outside, a good anticorrosive effect can be obtained. Even when an aluminum wire is used as a conductor, corrosion can be effectively suppressed.

  Furthermore, the anticorrosion treatment by the anticorrosive 4 is performed so that the anticorrosive does not flow into the electrical connection portion 31 using the inflow prevention means. The electric wire with terminal 1 is formed in the electrical connection portion 31 so that the anticorrosive 4 is not attached. Thus, since the anticorrosive agent 4 does not exist in the electric connection part 31, when the electric connection part 31 which consists of a female terminal is fitted and joined with the male terminal of a mating connector, a deformation | transformation of a spring is prevented by an anticorrosive agent. Thus, there is no possibility that the insertion force of the terminal increases, and the connector can be joined smoothly. Furthermore, if an anticorrosive agent adheres to the top plate or the bottom plate of the electrical connection portion 31, the contact area with the male terminal may occur and the contact resistance may be increased. Stable bonding can be achieved without increasing the resistance.

  Further, as will be described later, the electrical connection portion 31 of the terminal 3 can be provided with a through hole 34 for allowing the anticorrosive 4 to flow out in the bottom plate portion 31a as shown in FIG. In addition, as shown in FIG. 11, the electrical connection portion 31 has a part of the bottom plate portion 31 a cut out, and a cutout piece standing on the inside of the electrical connection portion 31. May be formed as a damming wall 35 for inflow. In this case, the notched portion can be formed as the through hole 34.

  The anticorrosive agent 4 has a low viscosity and high fluidity during the anticorrosion treatment, and after the treatment, the viscosity increases due to a change in temperature and the passage of time, and the fluidity is lowered. Any material can be used as long as it can be coated to exhibit corrosion resistance. Examples of the anticorrosive agent include wax, silicone rubber, and a chelating agent in which a water-repellent molecule is bound to a ligand that forms a metal complex by coordination bond with a metal.

  As the anticorrosive agent 4, it is particularly preferable to use a material that decreases in viscosity and increases in fluidity when heated and decreases in fluidity and solidifies when cooled. For example, FIG. 12 shows the viscosity change with the temperature of the chelating agent as an example of such a material. As shown in FIG. 12, it is possible to perform quantitative application using a dispenser by utilizing the property that the chelating agent is a liquid having a low viscosity at a high temperature. The chelating agent is heated and melted in a dispenser, and a predetermined portion where the conductor of the terminal is exposed is applied by a heater, and after the application, the entire terminal is quickly cooled to quickly and thinly apply the chelating agent. Solidifies instantaneously and the covering state is fixed. An anticorrosive agent made of a material that greatly improves fluidity at such a high temperature and easily spreads in a short time is optimal.

  In contrast, an anticorrosive agent such as liquid silicone rubber is in a liquid state before being cured, and is cured at a normal temperature with moisture in the atmosphere. Curing is accelerated by heating. However, even when heated, a certain amount of time is required until the curing is completed. If the curing time is long, the number of steps during production increases, which may take time for production and increase production costs. In addition, there is a problem that a space for storing the product being cured is required. In contrast, a material that decreases in viscosity and increases in fluidity when heated and decreases in fluidity and solidifies when cooled is applied in a state where the viscosity is reduced by heating. Since the fluidity can be improved by increasing the fluidity, there is no problem as described above, the workability is excellent, and the manufacturing cost can be reduced.

  Hereinafter, the manufacturing method of the electric wire with a terminal of the present invention is explained. The manufacturing method of the electric wire with a terminal of the present invention prevents the anticorrosive agent from flowing into the electrical connection portion 31 when the exposed portion of the conductor 21 is subjected to anticorrosion treatment after the coated electric wire 2 and the terminal are connected by crimping. The main feature is that the exposed portion of the conductor is covered so that the anticorrosive does not flow into the electrical connection portion by using the inflow prevention means. In the production method of the present invention, a known means can be used for the crimping process such as peeling the end of the covered electric wire 2 and crimping it to the terminal 3 before the anticorrosion treatment.

  Hereinafter, each aspect of the inflow prevention means in the anticorrosion process will be described. FIG. 3 is explanatory drawing which shows the anticorrosion treatment process of 1st Example of the manufacturing method of the electric wire with a terminal of this invention. The inflow preventing means shown in FIG. 3 covers the exposed portion of the conductor 21 with the anticorrosive agent 4 while spraying a fluid such as air from the electrical connecting portion 31 side to the covering portion. The anticorrosive 4 is prevented from flowing in.

  As shown in FIG. 3, in the anticorrosion process, first, the anticorrosive agent 4 is applied to the exposed portion of the conductor 21 after the crimping using the dispenser 5. The portions where the conductor 21 is exposed are two places between the wire barrel 32 and the insulation barrel 33 and between the insulation barrel 33 and the electrical connection portion 31. One dispenser 5 is installed above each, and the anticorrosive 4 is discharged onto the conductor 21.

  The dispenser 5 can adjust the discharge amount of the anticorrosive 4 that is heated and has high fluidity, and can apply a predetermined amount of the anticorrosive. A heating device 6 is provided below the crimped portion of the conductor 21 of the terminal 3. The heating device 6 can heat and cool the conductor 21, and can adjust the temperature of the anticorrosive 4 discharged to the conductor 4. Since the anticorrosion material 4 is heated by the heating device 6, it is cooled immediately after discharge so as not to be solidified. Therefore, the anticorrosion material 4 can reliably fill and cover the gaps between the conductors 4.

  Furthermore, in the aspect shown in FIG. 3, the air pipe | tube 7 for spraying air with respect to the anticorrosive agent 4 and preventing the anticorrosive agent 4 flowing out to the electrical-connection part side of a terminal is provided. The tip of the air tube 7 is provided between the end of the conductor 21 and the electrical connection portion 31 at a position where air can be injected. While blowing the air 71 from the tip of the air tube 7, the anticorrosive 4 is discharged from the tip of the dispenser 5 to cover the exposed portion of the conductor 21. Even if the anticorrosive 4 discharged on the conductor 21 flows into the electrical connecting portion 31 side, the anticorrosive 4 is pushed back to the conductor 21 side (left side in the figure) by the air 71 blown from the air tube 7. Therefore, the inflow of the anticorrosive 4 to the electrical connection portion 31 can be prevented. As the air 71 blown from the air tube 7, heated air can be used. When the heated air 71 is blown from the air tube 7, the temperature of the anticorrosive 4 can be prevented from being lowered, and the conductor 21 can be prevented from being unevenly coated.

  In the state shown in FIG. 3, the anticorrosive agent 4 is cooled to lower the fluidity and solidify, whereby the terminal-attached electric wire 1 in which the exposed portion of the conductor 21 is covered is obtained. As a cooling method of the anticorrosive 4, for example, the cooling function of the heating device 6 can be used to change the heating state to the cooling state. Moreover, when the air heated from the air pipe 7 is sprayed, the anticorrosive agent 4 can be cooled by making the air sprayed into a lower temperature.

  FIG. 4 is a modification of FIG. In the embodiment shown in FIG. 3, the tip of the air tube 7 is disposed above the end of the conductor 21 and the electrical connection portion 31. On the other hand, in the aspect shown in FIG. 4, the tip of the air tube 7 is disposed at a position facing the opening end of the electrical connection portion 31. The air tube 7 can inject air into the inside from the outside of the electrical connection portion 31.

  As shown in FIG. 4, while the air 71 is blown from the tip of the air tube 7, the anticorrosive 4 is discharged from the tip of the dispenser 5 to cover the exposed portion of the conductor 21. During the discharge of the anticorrosive 4, air 71 is blown onto the covered portion of the conductor 21 from the inside of the electrical connection portion 31 toward the end of the conductor 21. Even if the anticorrosive 4 flows into the electrical connecting portion 31 side, the air 71 blown from the inside of the electrical connecting portion 31 is pushed back to the conductor 21 side (left side in the figure). Inflow to 31 can be prevented.

  FIG. 5 is a modification of FIG. As shown in FIG. 5, the anticorrosion material can be discharged onto the conductor 21 without providing a heating device at the covered portion of the conductor 21.

  FIG. 6 is explanatory drawing which shows the anticorrosion process of 2nd Example of the manufacturing method of the electric wire with a terminal of this invention. In this aspect, as shown in FIG. 6, when the anticorrosion treatment is performed, the dispenser 5 is arranged with the damming jig 10 disposed between the electrical connection portion 31 and the exposed portion of the end portion of the conductor 21. The anticorrosive agent 4 is discharged from the surface to cover the conductor 21, thereby preventing the anticorrosive agent 4 from flowing into the electrical connection portion 31 side.

  FIG. 7A is a cross-sectional view showing the state before applying the anticorrosive agent in FIG. 6, and FIG. 7B is a cross-sectional view showing the state after applying the anticorrosive agent. As shown in FIG. 7A, the tip of the jig 10 is formed in a shape corresponding to the surface shape of the terminal when in contact with the terminal 3. That is, as shown in FIG. 7B, the jig 10 is deformed so as to follow the shape of the terminal 3 so as to be in close contact with the surface of the terminal 3 without any gap, and the jig 10 is placed at a predetermined position. When arranged, the anticorrosive 4 can be blocked from flowing into the electrical connection portion side.

  The jig 10 is preferably formed of an elastic material that does not have a gap when it contacts the terminal surface. Examples of such an elastic material include rubber. Among these, silicone rubber is preferable because it has good heat resistance and is difficult to form a gap due to deformation.

  As shown in FIG. 7B, the jig 10 is disposed between the electrical connection portion 31 and the exposed portion of the end portion of the conductor 21, and the anticorrosive 4 is discharged from the conductor to cover it. If it does so, since the anticorrosive 4 will be dammed by the jig | tool 10, the outflow to the electrical connection part 31 side will be interrupted | blocked. After cooling in this state and solidifying the anticorrosive 4, the jig 10 is removed to obtain the terminal-attached electric wire 1 subjected to waterproofing treatment.

  FIG. 8 is explanatory drawing which shows the anticorrosion process of 3rd Example of the manufacturing method of the electric wire with a terminal of this invention. FIG. 9 is a bottom view of FIG. 10 is a cross-sectional view of the terminal-attached electric wire of FIG. In this aspect, as shown in FIGS. 8 to 10, when the anticorrosion treatment is performed, the anticorrosive 4 is discharged from the dispenser 5 using the terminal 3 provided with the through hole 34 in the bottom surface 31 a of the electrical connection portion 31. By covering the conductor 21, the anticorrosive agent 4 that has flowed out to the electrical connection portion 31 side is discharged from the through hole 34 to prevent the anticorrosion agent 4 from flowing into the electrical connection portion 31 side.

  The through-hole 34 provided in the bottom plate 31a of the electrical connection portion 31 of the terminal 3 may be any as long as the anticorrosive 4 that has flowed out can be discharged to the outside, and its size, number, shape, and the like are particularly limited. Not.

  As shown in FIG. 8, the anticorrosive 4 is discharged from the tip of the dispenser 5 to cover the exposed portion of the conductor 21. As shown in FIG. 10, the anticorrosive agent 4 that has flowed into the electrical connection portion 31 side is discharged to the outside from the through hole 34, and thus can be prevented from flowing into the electrical connection portion 31. If the anticorrosive agent 4 is cooled in this state, the anticorrosive agent 4 is solidified, and an electric wire with a terminal in which the conductor 21 is coated with the anticorrosive agent 4 is obtained.

  FIG. 11 is a sectional view of a modification of the third embodiment. In the embodiment shown in FIG. 10, the through hole 34 is formed in a state where the bottom plate 31 a of the electrical connection portion 31 is cut off. On the other hand, in the embodiment shown in FIG. 11, a cut is made in the bottom plate 31a, and the cutout piece is bent up inward of the electrical connection portion as a cutout piece. The formed terminal 3 is used. In addition, the terminal 3 shown in FIG. 11 has a notch portion of the bottom plate portion 31 a formed as a through hole 34.

  When the anticorrosion treatment is performed using the terminal shown in FIG. 11, the anticorrosive 4 flowing into the electrical connection portion 31 is discharged to the outside through the through hole 34, as in the embodiment shown in FIG. 8. Furthermore, in the aspect shown in FIG. 11, since the anticorrosive agent which flows out to the electrical connection part 31 side is dammed by the damming wall 35, the inflow of the anticorrosive agent can be well dammed, and the inflow prevention effect can be enhanced. .

  As long as the manufacturing method of the electric wire with a terminal of this invention is a range which does not inhibit the effect of this invention, you may implement combining the said Examples 1-3.

  The electric wire 1 with a terminal of this invention can be optimally utilized for the wire harness etc. of vehicles, such as a motor vehicle, for example.

DESCRIPTION OF SYMBOLS 1 Electric wire with a terminal 2 Covered electric wire 21 Conductor 22 Insulator 3 Terminal 31 Electrical connection part 31a Bottom plate part 32 Wire barrel 33 Insulation barrel 34 Through hole 35 Damping wall 4 Anticorrosive 5 Dispenser 6 Heating device 7 Air pipe 71 Air 10 Ingredients

Claims (14)

The conductor is composed of a covered electric wire coated with an insulator, an electric connection part for connecting to a counterpart terminal, and a terminal including a crimping part for connecting the conductor, and the conductor is connected to the crimping part, In the electric wire with a terminal that is subjected to anticorrosion treatment by covering the exposed part of the conductor with an anticorrosive agent,
The anticorrosion treatment with the anticorrosive agent is performed using inflow prevention means for preventing the anticorrosive agent from flowing into the electrical connection portion, and the anticorrosion agent is not attached to the electrical connection portion. Wire with terminal to be used.   The electric wire with a terminal according to claim 1, wherein the electrical connection portion of the terminal is a female terminal of a male-female fitting terminal.   The electric wire with a terminal according to claim 1 or 2, wherein a through hole is provided in a bottom plate of the electrical connection portion.   A notch piece in which a part of the wall surface of the electrical connection portion is cut out is erected inward of the electrical connection portion, and is formed as a damming wall that prevents the inflow of the anticorrosive agent into the electrical connection portion. The terminal-attached electric wire according to any one of claims 1 to 3.   5. The terminal-attached electric wire according to claim 4, wherein the notch piece is obtained by notching a bottom plate of the electrical connecting portion, and the notch portion of the bottom plate is formed as a through hole.   The electric wire with a terminal according to any one of claims 1 to 5, wherein the conductor of the covered electric wire is aluminum.   The electric wire with a terminal according to any one of claims 1 to 6, wherein the anticorrosive is a material that melts by heating and solidifies by cooling. The conductor is composed of a covered electric wire coated with an insulator, an electric connection part for connecting to a counterpart terminal, and a terminal including a crimping part for connecting the conductor, and the conductor is connected to the crimping part, In the method of manufacturing the electric wire with a terminal by coating the exposed portion of the conductor with an anticorrosive agent and applying an anticorrosion treatment,
When the anticorrosion treatment is applied to the exposed portion of the conductor, the conductor is prevented from flowing into the electrical connection portion by using inflow prevention means for preventing the anticorrosion agent from flowing into the electrical connection portion. The manufacturing method of the electric wire with a terminal characterized by covering the exposed part.   The inflow prevention means covers the exposed portion of the conductor with the anticorrosive agent while spraying fluid from the electrical connection portion side to the covering portion, thereby preventing the anticorrosive agent from flowing into the electrical connection portion side. The manufacturing method of the electric wire with a terminal of Claim 8 characterized by the above-mentioned.   The method of manufacturing an electric wire with a terminal according to claim 9, wherein the fluid is heated.   The inflow prevention means prevents the inflow of the anticorrosive agent into the electrical connection portion side by disposing a jig between the electrical connection portion and the exposed portion of the conductor and covering with the anticorrosive agent. The manufacturing method of the electric wire with a terminal of any one of Claims 8-10 characterized by the above-mentioned.   The method of manufacturing an electric wire with a terminal according to claim 11, wherein a material of the jig is silicone rubber.   The inflow prevention means prevents a flow of the anticorrosive agent into the electrical connection portion by providing a through hole in the bottom surface of the electrical connection portion and discharging the anticorrosive agent from the through hole to the outside. It exists, The manufacturing method of the electric wire with a terminal of any one of Claims 8-12 characterized by the above-mentioned.   The anticorrosive agent is a material that melts by heating and solidifies by cooling, and the coating portion is coated with the anticorrosive agent by using a heating means for externally heating the coating portion to be coated with the anticorrosive agent. The manufacturing method of the electric wire with a terminal of any one of Claims 8-13 characterized by these.

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