JP6868358B2 - Manufacturing method of electric wire with terminal - Google Patents

Description

The present invention relates to, for example, a method for manufacturing an electric wire with a terminal used in an automobile or the like.

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

On the other hand, as environmental problems are attracting attention, weight reduction of automobiles is required. Therefore, an increase in weight due to an increase in the amount of wire harness used becomes a problem. For this reason, lightweight aluminum electric wires are attracting attention in place of the conventionally used copper wires.

Here, a connection terminal is used when connecting such electric wires or at a connection portion of equipment or the like. However, even in the case of an electric wire with a terminal using an aluminum electric wire, copper having excellent electrical characteristics may be used for the terminal portion for the sake of reliability of the connecting portion and the like. In such a case, the aluminum electric wire and the copper terminal are joined and used.

However, when dissimilar metals are brought into contact with each other, so-called galvanic 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 electrically base aluminum side progresses due to the influence of water scattering and dew 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 will increase due to the increase in contact resistance and the decrease in wire diameter, and further, the disconnection will occur, resulting in malfunction or malfunction of the electrical components. is there.

Therefore, a method of covering the connection portion between the electric wire and the terminal with a resin member has been proposed (for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-153721

In the conventional resin member coating step, in order to evenly coat the resin member with a small amount of resin used, the resin particles staying at the tip of the discharge needle are brought into contact with a plurality of terminals and coated. However, with such a method, although the anticorrosion terminal can be manufactured, it takes time for the dropping process and the terminal set. Further, since control in the Z direction is required, there is a problem that the tact time of manufacturing is long and the productivity is low.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a method for manufacturing an electric wire with a terminal capable of shortening the manufacturing tact time.

In order to achieve the above-mentioned object, in the present invention, a coated conductor including a coated portion and a conductor exposed from the tip of the coated portion is crimped to a conductor crimping portion to which the conductor is crimped and the coated portion is crimped. It is connected to a terminal provided with a coated crimping portion, and has a property of arranging a crimping portion composed of the conducting wire crimping portion and the coated crimping portion below the dispenser and curing by ultraviolet rays inside the liquid chamber of the dispenser. A force is applied to the resin member, and the force causes droplets of the resin member to be ejected from the nozzle of the dispenser at a speed equal to or higher than the free drop speed due to its own weight (excluding those that blow off the resin member with air), and at least. The resin member is applied so as to cover the conductor exposed from the coating portion, the resin member is cured, and the diameter of the droplet of the resin member immediately after leaving the nozzle is the wire constituting the conductor. It is equal to or larger than the diameter and less than or equal to the width of the conductor crimping portion, the dispenser is arranged on the central axis in the width direction of the terminal, and the dispenser is aligned on the central axis in the longitudinal direction of the terminal. It is a method of manufacturing an electric wire with a terminal, characterized in that the resin member is applied at a predetermined interval by moving only to.

It is desirable that the viscosity of the resin member at the time of application is 10 mPa · s or more and 1000 mPa · s or less.

The dispenser includes the liquid chamber for holding the resin member, a resin member pumping unit for replenishing the resin member to the liquid chamber, and a rod capable of reciprocating inside the liquid chamber. When the force is applied to the resin member in the liquid chamber at high speed toward the nozzle, the liquid of the resin member is subjected to water repellent treatment in the vicinity of the tip portion by the force. Drops may be fired.
Further, the force of the rod when moving the rod toward the nozzle at high speed ^{may be 7 × 10 -5} N or more.

According to the present invention, since the resin member is applied by a dispenser that applies an inertial force to the resin member to eject droplets, the resin member can be applied in a short time. Further, since the droplets of the resin member are ejected from the nozzle, it is not necessary to bring the droplets of the resin member into contact with the coating target. Therefore, it is not necessary to move the nozzle in the Z-axis direction according to the unevenness of the coating target.

Further, if the viscosity of the resin member at the time of coating is 10 to 1000 mPa · s, the resin member can be efficiently permeated into the gap and the resin member can be prevented from flowing down from the surface of the conducting wire. ..

Further, if the diameter of the droplet of the resin member immediately after leaving the nozzle is equal to or larger than the diameter of the wire constituting the conducting wire, the resin member can be reliably permeated between the wires. Further, if the diameter of the droplet of the resin member immediately after leaving the nozzle is equal to or less than the width of the conductor crimping portion, it is possible to prevent the resin member from flowing from both sides of the conductor crimping portion.

If the diameter of the droplet of the resin member immediately after leaving the nozzle is equal to or larger than the width of the conductor crimping portion, the resin member flows from both sides of the conductor crimping portion, and not only the resin member is wasted but also the wire There is a risk of insufficient penetration into the space. Further, if the resin members adhere to both sides of the conductor crimping portion, the width of the crimping portion becomes wide, so that there is a risk of interference with the housing or the like during use.

Further, by arranging and moving the dispenser on the central axis in the width direction of the terminal, the resin members are applied at predetermined intervals, and the dispenser can be easily controlled.

Further, the dispenser is provided with a rod that can reciprocate inside the liquid chamber that holds the resin member, and the rod is moved at high speed toward the nozzle to apply an inertial force to the resin member, so that the liquid of the resin member is liquid from the nozzle. By firing the droplets, the droplets of the resin member can be launched in an extremely short time.

According to the present invention, it is possible to provide a method for manufacturing an electric wire with a terminal capable of shortening the manufacturing tact time.

The perspective view which shows the electric wire 10 with a terminal. (A) to (c) are conceptual diagrams showing the operation mechanism of the dispenser 19. The conceptual diagram which shows the operation mechanism of a dispenser 19. Top view of the electric wire 10 with terminals. (A) is a diagram showing a state in which droplets of the resin member 17 are ejected from the dispenser 19, and (b) is a diagram showing a state in which the resin member 17 is applied. The figure which shows the state which the resin member 17 was applied. The figure which shows the evaluation method of the electric wire 10 with a terminal.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an electric wire 10 with a terminal. The figure is a perspective view of the resin member 17. The terminal-equipped electric wire 10 is configured by connecting the terminal 1 and the coated conductor wire 11. The terminal 1 is an open barrel type, and a copper alloy such as copper or brass or a terminal 1 plated with tin or the like is used. A coated conductor 11 is connected to the terminal 1.

The coated conductor 11 includes a conductor 13 which is an aluminum wire or an aluminum alloy wire, and a covering portion 15 which covers the conductor 13. That is, the coated conductor 11 includes a coated portion 15 and a conductor 13 exposed from the tip thereof. The conductor 13 is, for example, a stranded wire in which a plurality of strands are twisted together.

The terminal 1 includes a terminal body 3 and a crimping portion 5. The terminal body 3 is formed by forming a plate-shaped material having a predetermined shape into a tubular body having a rectangular cross section. The terminal body 3 has an elastic contact piece formed by folding a plate-shaped material into a rectangular cylinder. The terminal body 3 is connected by inserting a male terminal or the like from the front end portion. In the following description, an example is shown in which the terminal body 3 is a female terminal that allows insertion of an insertion tab (not shown) such as a male terminal. In the present invention, the detailed shape of the terminal body 3 is shown. Is not particularly limited. For example, instead of the female terminal body 3, for example, a male terminal insertion tab may be provided.

The crimping portion 5 is a portion to be crimped to the coated conducting wire 11, and has a barrel shape having a substantially U-shaped cross section perpendicular to the longitudinal direction of the terminal 1. The crimping portion 5 of the terminal 1 includes a conducting wire crimping portion 7 that crimps the conducting wire 13 exposed from the covering portion 15 to the tip end side of the coated conducting wire 11 and a covering crimping portion 9 that crimps the covering portion 15 of the coated conducting wire 11.

A part of the inner surface of the conductor crimping portion 7 is provided with serrations (not shown) in the width direction (direction perpendicular to the longitudinal direction). By forming the serrations in this way, when the conductor 13 is crimped, the oxide film on the surface of the conductor 13 is easily broken, and the contact area with the conductor 13 can be increased.

At the tip of the coated conductor 11, the coated portion 15 is peeled off, and the internal conductor 13 is exposed. The coated portion 15 of the coated conductor 11 is crimped by the coated crimping portion 9 of the terminal 1. Further, the conductor 13 whose covering portion 15 is peeled off and exposed is crimped by the conductor crimping portion 7. At the conductor crimping portion 7, the conductor 13 and the terminal 1 are electrically connected. The end face of the covering portion 15 is located between the covering crimping portion 9 and the conductor crimping portion 7.

In the present invention, at least the conducting wire 13 exposed from the covering portion 15 is covered with the resin member 17. That is, the conductor crimping portion 7 and the coated crimping portion 9 are covered with the resin member 17, and the conductor 13 is not exposed to the outside by the resin member 17. The resin member 17 is, for example, an ultraviolet curable resin such as silicone acrylate, urethane acrylate, or acrylic acrylate. The details of the resin member 17 will be described later.

Next, a method of manufacturing the electric wire 10 with terminals will be described. The dispenser used in the present invention is not a conventional machine-controlled dispenser such as a needle (including a dispenser in which a resin member is simply extruded by air pressure to form a droplet at the tip of the nozzle). High-speed operation is possible.

2 (a) to 2 (c) are conceptual diagrams showing the operating mechanism of the dispenser 19, and FIG. 3 is a diagram showing the displacement of the rod. As shown in FIG. 2A, the dispenser 19 mainly includes a nozzle 25, a rod 21, a spring 23, and the like.

The resin member 17 is held in the liquid chamber 27. A heating unit is arranged in the dispenser 19, and the resin member 17 is heated as needed. By heating the resin member 17, the viscosity of the resin member 17 can be lowered. The heating temperature is, for example, about 80 ° C., although it depends on the characteristics of the resin member 17.

In the present embodiment, it is desirable that the viscosity of the resin member 17 at the time of firing according to JIS Z 8803 is 10 to 1000 mPa · s. If the viscosity is less than 10 mPa · s, when the resin member 17 is applied, the resin member 17 may flow out from the vicinity of the crimping portion and may not be properly coated. If the viscosity exceeds 1000 mPa · s, when the resin member 17 is applied, the resin member 17 may not sufficiently penetrate into the crimping portion, and a gap may be formed inside.

The rod 21 of the dispenser 19 can reciprocate with respect to the nozzle 25. That is, the rod 21 can reciprocate inside the liquid chamber 27. Inside the liquid chamber 27, the rod 21 is pressed downward (toward the nozzle) by the spring 23, and to counteract this, the rod 21 is pushed upward (opposite to the nozzle 25) by an air circuit (not shown). It is pushed up to the side). This state corresponds to K in FIG.

First, the crimping portion 5 (conductor crimping portion 7) of the coated conductor 11 is arranged below the dispenser 19 (nozzle 25). When the air pressure is cut off from this state, as shown in FIG. 2B, the rod 21 moves downward by the spring 23 (arrow A in the figure), and the tip of the rod 21 protrudes into the liquid chamber 27 at high speed. , Suddenly stop. This state corresponds to L in FIG.

As the rod 21 moves at high speed, an inertial force is applied to the resin member 17 in the liquid chamber 27, and the droplets of the resin member 17 are ejected downward (sprayed vigorously) (arrow B in the figure). That is, with one high-speed movement of the rod 21, a single droplet of the resin member 17 is ejected and applied in the vicinity of the conductor crimping portion 7 arranged below the dispenser 19. At this time, droplets of the resin member 17 are ejected from the nozzle 25 of the dispenser 19 at a speed equal to or higher than the speed of free fall due to its own weight.

The contact portion of the nozzle 25 with the resin member 17 near the tip thereof may be subjected to a water-repellent treatment for reducing the wettability with the resin member 17.

Next, when air pressure is applied again, as shown in FIG. 2C, the rod 21 is pushed back upward against the pressure of the spring 23 (arrow C in the figure). At this time, the resin member 17 is supplied from the resin member pumping unit 29 into the liquid chamber 27 (arrow D in the figure). This state corresponds to J in FIG. It should be noted that the rod 21 may be controlled by using another mechanism such as an electromagnetic force instead of air.

The resin member pumping unit 29 can replenish the liquid chamber 27 by pumping the resin member 17 with air, for example. By repeating the above at high speed while moving the position of the nozzle 25, the droplets of the resin member 17 are intermittently ejected a plurality of times to uniformly apply the resin member 17 to a predetermined position (range). Can be done. For example, the dispenser 19 can discharge the resin member 17 at a maximum of several hundred times / second.

The force of the rod 21 (pushing pressure by the spring 23) is ^{preferably 7 × 10 -5} N or more, for example. If it is less than this, the inertial force for ejecting the droplets of the resin member 17 cannot be applied to the resin member 17, and the droplets of the resin member 17 are ejected at a sufficient acceleration (acceleration higher than gravity). Becomes difficult.

Further, it is desirable that the air pressure for pressure-feeding the resin member 17 to the liquid chamber is, for example, 10 kPa or more. Below this, it is difficult to stably eject the droplet when the inertial force is applied by the rod 21. It is desirable that the pumping air pressure is further 100 kPa to 400 kPa. This is because if the air pressure is too high, the droplets will become too large.

In this way, by adjusting the stroke length of the rod 21 (H in FIG. 3), the spring force applied to the rod 21, the air pressure for pumping the resin member 17, and the like, the resin member 17 fired from the nozzle 25 The amount of can be adjusted. That is, the droplet diameter of the resin member 17 can be adjusted.

FIG. 4 is a plan view of the electric wire 10 with terminals. When applying the resin member 17 to the electric wire with terminals, the center of the nozzle 25 of the dispenser 19 is arranged on the central axis (F line in the figure) in the width direction of the terminal 1, and the dispenser 19 is placed on the central axis F. While moving, the resin member 17 is applied at predetermined intervals.

For example, the resin member 17 is applied between the covering crimping portion 9 and the conducting wire crimping portion 7 in order from the covering portion 15 side, on the covering portion 15 (G1 in the figure) and on the conducting wire 13 (G2 in the drawing). Further, the resin member 17 is attached in the order of the rear end of the conductor crimping portion 7 (G3 in the figure), the conductor crimping portion 7 (G4 in the figure), and the conductor 13 on the tip side of the conductor crimping portion 7 (G5 in the figure). Apply. By doing so, since the dispenser 19 is only moved in a straight line in the longitudinal direction of the terminal-equipped electric wire 10, the dispenser 19 can be easily controlled.

5 (a) is a view showing a cross section taken along the line EE of FIG. 4, showing a moment when the resin member 17 is applied, and FIG. 5 (b) is a view showing a state in which the resin member 17 is applied. Is. As described above, droplets of the resin member 17 are ejected from the nozzle 25 of the dispenser 19. At the moment when the resin member 17 separates from the nozzle 25, the droplet may have a slightly elongated shape, but at the moment when it separates from the nozzle 25 (arrow M in the figure), it becomes a substantially spherical droplet.

Here, when the droplet of the resin member 17 ejected by one firing is made spherical, the droplet diameter (N in the figure) is the wire diameter of each strand constituting the conducting wire 13 (D in the figure). ) Is desirable. If the droplet diameter N is smaller than the wire diameter D, the resin member 17 rides on a single wire, the droplet shape is maintained on the wire by surface tension, and the resin member 17 penetrates between the wires. There is a risk of not doing it. By making the droplet diameter N larger than the wire diameter D, at least a part of the droplets adheres between the strands, and the resin member 17 can penetrate between the strands by surface tension or the like.

Further, it is desirable that the droplet diameter (N in the figure) is smaller than the width of the conductor crimping portion 7 (P in the figure). If the droplet diameter N is larger than the width P of the conductor crimping portion 7, the resin member 17 flows to both sides of the conductor crimping portion 7, so that the resin member 17 is wasted. Further, when the resin member 17 starts to flow on both sides of the conductor crimping portion 7, the resin member 17 preferentially flows on both sides of the conductor crimping portion 7, and the resin member 17 cannot sufficiently penetrate into the conductor 13. .. Therefore, by making the droplet diameter N smaller than the width P of the conductor crimping portion 7, the droplet can be surely adhered to the conductor 13 and the resin member 17 can penetrate between the strands.

It is desirable that the coating thickness of the resin member 17 (Q in the figure) is thicker than the thickness of the coated portion 15 of the coated conducting wire 11. For example, it is desirable that the coating thickness Q of the resin member 17 from the surface of the conducting wire 13 is 1.2 times or more the thickness of the covering portion 15. By doing so, not only the conductor 13 but also the surface of the covering portion 15 can be reliably covered with the resin member 17, and the resin member 17 is less likely to be peeled off even when an external force is applied.

FIG. 6 is a cross-sectional view in the longitudinal direction in which the resin member 17 is applied in this way. In this way, by applying the resin member 17 so as to cover at least the conducting wire 13 exposed from the covering portion 15 and curing the resin member 17, it is possible to construct an anticorrosion structure for the electric wire 10 with terminals.

Here, the resin member 17 is, for example, an ultraviolet curable resin.

The resin member 17 may be a hybrid curing type that combines not only ultraviolet curing but also ultraviolet curing, moisture curing, anaerobic curing, thermosetting, and the like. By doing so, it is possible to easily cure a portion that is difficult to irradiate with ultraviolet rays.

Further, it is desirable that the hardness of the resin member 17 after curing is lower than the hardness of the covering portion 15. For example, when a sheet having a thickness of 2 mm is formed from the resin materials of the resin member 17 and the coating portion 15 and the hardness is measured by JIS K6253-3, the durometer hardness A50 to A100 of the coating portion 15 is compared with respect to the durometer hardness A50 to A100 of the coating portion 15. The durometer hardness of the resin member 17 is preferably in the range of A20 to A50.

If the shore hardness of the resin member 17 is too small, it is easily scratched, and if the shore hardness of the resin member 17 is too large, a large thermal shrinkage stress is applied, so that the life in a thermal shock environment is shortened. Further, by making the hardness of the resin member 17 lower than the hardness of the covering portion 15, the resin member 17 can be easily made to follow expansion and deformation due to a temperature change, an external force, and the like. Therefore, a gap is unlikely to occur.

The mass reduction rate after immersing the cured resin member 17 in a sodium hydroxide solution having a pH of 10 for 24 hours is preferably 10% or less.

Further, when a sheet having a thickness of 200 μm of the cured resin member 17 is prepared and the breaking elongation at 25 ° C. is measured by JIS K6251, the breaking elongation of the resin member 17 is preferably 100% or more. As described above, when the breaking elongation of the resin member 17 is 100% or more, the resin member 17 can be easily made to follow the expansion and deformation due to the temperature change and the external force as described above.

An ultraviolet curable resin composition having a curing mechanism of ultraviolet curing and moisture curing containing urethane acrylic oligomer, acrylic monomer, and a photoinitiator as main components was prepared, and applied to an electric wire with a terminal under various conditions. An anticorrosion test was conducted.

As the dispenser, the one having the mechanism shown in FIG. 2 was used. The evaluation was performed by changing the droplet diameter by changing the nozzle diameter. In addition, the oligomer component and the monomer component of this composition were adjusted to prepare resin members having different viscosities, and evaluation was performed.

As shown in FIG. 7, the anticorrosion performance was evaluated by storing the salt water 33 in the water tank 31, immersing the electric wire 10 with a terminal (terminal 1), and then measuring the resistance fluctuation between the terminal and the electric wire. The concentration of salt water 33 was determined to be NaCl 3.0 ± 0.5%. The immersion depth of the terminal 1 was set to 300 ± 10 mm. The submersion time was 48 hours, and the resistance was measured after being left in an environment of 95 ± 5% RH for 48 hours at 60 ± 5 ° C. after submersion, and compared with the resistance before immersion in salt water. Those having a resistance fluctuation of 2.0 mΩ or less were regarded as acceptable.

Table 1 shows the results of applying the resin member by changing the terminal size. Each of the following examples was evaluated at n = 5, and the "applicability" in the table was more than free fall due to the weight of the droplets of the resin member with good reproducibility for all of n = 5. Those that could be fired at speed were judged as acceptable (○). The droplet diameter immediately after firing was obtained by measuring the weight of the resin member after firing and calculating the diameter in the case of a sphere from the resin density. Regarding the anticorrosion test, when all resistance fluctuations of n = 5 were 2.0 mΩ or less, they were marked with “◯”, and when a part of n = 5 exceeded 2.0 mΩ, they were marked with “△”. And said.

No. In each of 1 to 3, it was possible to apply the resin member in a short time. That is, it was possible to apply a desired amount of resin member in a short time as compared with the conventional air or screw type. In addition, No. In all of 1 to 3, the anticorrosion test passed.

Table 2 shows the results of applying the resin member by changing the viscosity of the resin member.

No. In any of 4 to 8, it was possible to apply the resin member in a short time. On the other hand, No. Some of 4 and 8 exceeded the standard in the anticorrosion test. No. It is considered that No. 4 is because the viscosity of the resin member is too low and the thickness of the resin member cannot be sufficiently secured. In addition, No. It is considered that the reason 8 is that the resin member did not sufficiently penetrate between the strands because the viscosity was too high.

Table 3 shows the results of applying the resin member by changing the droplet diameter.

No. In any of 9 to 14, the resin member could be applied in a short time. On the other hand, No. Some of 9, 13 and 14 exceeded the standard in the anticorrosion test. No. It is considered that the reason 9 is that the resin member did not sufficiently penetrate between the strands because the droplet diameter was smaller than the wire diameter. In addition, No. It is probable that the droplet diameters 13 and 14 were larger than the terminal width (width of the conductor crimping portion), so that the resin member flowed and did not sufficiently penetrate into the conductor.

As described above, according to the present embodiment, since the resin member 17 covers the connecting portion between the terminal 1 and the coated conducting wire 11, the anticorrosion effect can be efficiently obtained. At this time, since the dispenser 19 applies an inertial force to the resin member 17 to apply the resin member 17 to the electric wire 10 with terminals, the resin member 17 can be applied in an extremely short time.

For example, if a predetermined amount of the resin member is extruded from the nozzle by a conventional screw type or air and the resin member is brought into contact with the coating target to be coated, it takes time for coating. Further, in the method of blowing off the resin member with compressed air, it is difficult to control the droplet diameter and the coating position, and it is necessary to provide an air injection portion in the vicinity of the nozzle, so that the structure of the dispenser is complicated. Become. As in the present embodiment, by applying an inertial force to the resin member 17 by the rod 21 to eject the droplets from the nozzle 25, it is easy to control the droplet diameter and the coating position.

Further, by appropriately controlling the viscosity of the resin member 17, the resin member 17 can easily penetrate to the back surface side of the conductor 13, and a sufficient coating thickness can be secured, so that the exposed conductor 13 can be reliably exposed. Can be coated with the resin member 17.

Further, by making the droplet diameter of the resin member 17 appropriate, the resin member 17 can be reliably applied.

Although the embodiment of the present invention has been described above with reference to the attached drawings, the technical scope of the present invention does not depend on the above-described embodiment. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the technical ideas described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

1 ………… Terminal 3 ………… Terminal body 5 ………… Crimping part 7 ………… Conductor crimping part 9 ………… Covered crimping part 10 ………… Wire with terminal 11 ………… Covered conductor 13 ………… Conductor 15 ……… Cover 17 ………… Resin member 19 ………… Dispenser 21 ………… Rod 23 ………… Spring 25 ………… Nozzle 27 ………… Liquid chamber 29 ………… Resin member pumping unit 31 ………… Water tank 33 ……… Salt water

Claims (4)

A coated conductor including a coated portion and a conductor exposed from the tip of the coated portion is connected to a terminal including a conductor crimping portion to which the conducting wire is crimped and a coated crimping portion to which the covering portion is crimped. And
A crimping portion including the lead wire crimping portion and the covering crimping portion is arranged below the dispenser, and a force is applied to a resin member having a property of being cured by ultraviolet rays inside the liquid chamber of the dispenser, and the force is applied to the resin member. Droplets of the resin member are ejected from the nozzle of the dispenser at a speed equal to or higher than the free fall speed due to its own weight (excluding those in which the resin member is blown off by air), and at least the resin is covered with the lead wire exposed from the coating portion. A member is applied, and the resin member is cured .
The diameter of the droplet of the resin member immediately after leaving the nozzle is not less than or equal to the diameter of the wire constituting the conductor and less than or equal to the width of the conductor crimping portion.
The resin member is applied at predetermined intervals by arranging the dispenser on the central axis in the width direction of the terminal and moving the dispenser only in a straight line in the longitudinal direction of the terminal on the central axis. A characteristic method for manufacturing electric wires with terminals. The method for manufacturing an electric wire with a terminal according to claim 1, wherein the viscosity of the resin member at the time of coating is 10 mPa · s or more and 1000 mPa · s or less. The dispenser includes the liquid chamber for holding the resin member, a resin member pumping unit for replenishing the resin member to the liquid chamber, and a rod capable of reciprocating inside the liquid chamber. When the force is applied to the resin member in the liquid chamber at high speed toward the nozzle, the liquid of the resin member is subjected to water repellent treatment in the vicinity of the tip portion by the force. The method for manufacturing a terminalized electric wire according to claim 1 or 2, wherein the droplet is emitted. The method for manufacturing an electric wire with a terminal according to claim 3 , wherein the force of the rod when moving the rod toward the nozzle at high speed is 7 × 10 ^-5 N or more.

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