JP5889228B2 - Electric wire manufacturing method with terminal and core wire exposure device - Google Patents

Description

  The present invention relates to a terminal-attached electric wire manufacturing method for manufacturing an electric wire with a terminal constituting a wire harness of an automobile, an OA device, a home appliance, and the like, and a core wire exposure device suitable for the method of manufacturing a terminal-attached electric wire.

  Conventionally, as a component of an automobile wire harness, in a covered electric wire in which a core wire composed of a plurality of strands is covered with an insulation coating, the vicinity of the end of the core wire is exposed, and the crimping terminal (terminal) has the vicinity of the end of the core wire. The terminal-attached electric wire is used that is formed by crimping the portion and connecting the coated electric wire and the crimp terminal in a state where electricity can be applied.

  As an example of the electric wire with a terminal, the electric wire 100 with a terminal is shown in FIG. The terminal-attached electric wire 100 includes a covered electric wire 108 in which a core wire 104 composed of a plurality of strands 102 is covered with an insulating coating 106 and a crimp terminal (terminal) 112 in which a crimping portion 110 is crimped to the covered electric wire 108. .

  When manufacturing the terminal-attached electric wire 100, first, a crimp terminal 112 as shown in FIG. 10 is prepared. The crimping terminal 112 has a crimping part (connection part) 110 and a box part 111. The crimping part 110 has an open barrel shape in which an upper part is opened before crimping. The crimping section 110 includes a wire barrel 130 that crimps the core wire tip 120 and an insulation barrel 132 that crimps the insulation coating 106. A plurality of the crimp terminals 112 are connected by a bridge 134 continuing to the carrier 136 at one end of the crimp terminal 112 on the side of the installation barrel 132.

  On the other hand, after the covered electric wire 108 shown in FIG. 11A is prepared and the cut 116 as shown in FIG. 11B is formed in the insulating coating 106, the vicinity of the front end 114 of the insulating coating is shown in FIG. As shown by the arrow, it is divided and removed from the core wire 104 to be removed, and the vicinity of the core wire tip 120 is exposed.

  Next, as shown in FIG. 12, the crimp terminal 112 is positioned on the base 142, the wire anvil 144, and the insulation anvil 146 of the crimp device 140, and the carrier 136 and the bridge 134 are placed in the groove 150 of the carrier cutter 148. Sandwiched between. With the crimp terminal 112 positioned in this manner, the covered electric wire 108 is lowered from above, and the vicinity of the exposed core wire tip 120 is inserted into the wire barrel 130 and the insulating coating 106 is inserted into the installation barrel 132 from above. Is done.

  Next, the wire crimper 152, the insulation crimper 154, and the cut-off punch 156 are lowered from above, the wire crimper 152 presses the wire barrel 130 near the core tip 120, and the insulation crimper 154 covers the insulation barrel 132 with insulation. Crimp to 106. At this time, the cut-off punch 156 comes into contact with the carrier cutter 148 and then descends together with the carrier cutter 148 to cut the carrier 136 and the bridge 134. In this manner, the covered electric wire 108 is crimped to the crimp terminal 112 with a carrier in an open barrel shape, and the electric wire 100 with a terminal is manufactured. In this case, since a plurality of crimp terminals 112 are continuous with a carrier, the plurality of electric wires 100 with terminals can be manufactured continuously or simultaneously by the crimping apparatus 140, and the efficiency of the manufacturing work can be improved. Various proposals have been made for such a crimping device (see Patent Documents 1 and 2).

  On the other hand, when the crimping part 110 of the crimping terminal 112 has a cylindrical closed barrel shape as shown in FIG. 13, the vicinity of the core wire tip 120 of the covered electric wire 108 cannot be put into the crimping part 110 from above the terminal. Therefore, it is necessary to insert and crimp the vicinity of the core wire tip 120 into the crimping part 110 in the longitudinal direction of the covered electric wire 108. For this reason, when this crimp terminal 112 is equipped with a carrier, if a carrier cutter that sandwiches the carrier and the bridge is used, the core wire tip 120 interferes with the carrier cutter, so the vicinity of the core wire tip 120 cannot be inserted into the crimp part 110. .

  Moreover, there is a limit to using a thin core wire 104 so that the core wire tip 120 does not interfere with the carrier cutter because the strength of the core wire 104 or the electrical conductivity decreases. For this reason, when the crimp terminal 112 is a closed barrel type and has a carrier, the covered electric wire could not be crimped to the crimp terminal by a crimping device having a carrier cutter. As a result, when the crimp terminal 112 has a closed barrel shape and is equipped with a carrier, it has not been possible to increase the efficiency of the manufacturing work of the electric wire with the terminal by the crimp device having the carrier cutter.

JP 2007-234619 A JP-A-7-57848

  The present invention has been made in view of the above circumstances, and even if the crimping portion of the crimping terminal is a closed barrel type and the crimping terminal is equipped with a carrier, an electric wire with a terminal is manufactured by a crimping device having a carrier cutter. An object of the present invention is to provide a terminal-attached electric wire manufacturing method and a core wire exposing device that can improve the efficiency of manufacturing the electric wire with terminal.

The method of manufacturing an electric wire with a terminal of the present invention connects the vicinity of the end of the core wire of the covered electric wire in which the insulating coating covers the core wire composed of a plurality of strands, and the connecting portion of the closed barrel type terminal. It is a method of manufacturing an electric wire with a terminal for connecting an electric wire and the terminal in a state where electricity can be passed, and a dividing step of dividing the vicinity of the insulating coating tip to expose the vicinity of the core wire tip, and the exposed core wire over the entire length in the longitudinal direction, characterized in that it comprises a compression step of compressing the cross-sectional direction of the core wire, the exposed core wire and an insulating covering of the core wire distal end side near the connecting step of connecting is inserted into the connecting portion.

  Note that “compressing in the cross-sectional direction of the core wire” means that the diameter of the cross-section of the core wire, such as a diameter, a major axis, or a short axis, is reduced or the cross-sectional area is reduced, or the cross-sectional area of the core wire is simultaneously reduced It includes forming into a shape different from the substantially circular shape, for example, a shape obtained by removing a part of the arc from the circular shape. Further, “near the tip” is a concept including the tip and the vicinity of the tip.

  In the case of this invention, the covered electric wire is connected to the connecting portion in a state where at least the vicinity of the exposed end of the core wire is compressed in the cross-sectional direction of the core wire.

Moreover, the electric wire manufacturing method with a terminal of the present invention is characterized in that, in the electric wire manufacturing method with a terminal, the compression step is a step of compressing at least the exposed core wire and the vicinity of the core wire tip side of the insulation coating. To do.

  Moreover, the electric wire manufacturing method with a terminal of the present invention is the electric wire manufacturing method with a terminal, wherein the connecting portion of the terminal is cylindrical, and the connecting step inserts the vicinity of the end of the core wire in the axial direction of the connecting portion. And connecting.

  In the case of the present invention, at least the vicinity of the exposed core wire tip is compressed in the cross-sectional direction of the core wire, and the covered electric wire is inserted and connected from the compressed core wire tip side to the cylindrical connecting portion.

Moreover, the electric wire manufacturing method with a terminal which concerns on this invention is the said electric wire manufacturing method with a terminal, The exposure by the said division | segmentation step and compression by the said compression step are performed simultaneously.

  In the case of this invention, the exposure in the vicinity of the front end of the core wire by the dividing step and the compression in the vicinity of the front end of the core wire by the compression step are efficiently performed simultaneously.

Further, the core wire exposure apparatus according to the present invention connects the vicinity of the end of the core wire of the covered electric wire in which the insulating wire covers the core wire composed of a plurality of strands, and the connecting portion of the terminal, A core wire exposure device that exposes the vicinity of the core wire tip in order to connect the terminal to the energized state; a cutting mechanism that divides the vicinity of the insulating coating tip to expose the vicinity of the core wire tip; and the exposed core wire And a compression mechanism that compresses the vicinity of the tip in the cross-sectional direction of the core wire.

  In the case of this invention, the covered electric wire is connected to the connecting portion in a state where at least the vicinity of the exposed end of the core wire is compressed in the cross-sectional direction of the core wire by the compression mechanism.

Moreover, the core wire exposure apparatus according to the present invention is characterized in that the core wire exposure apparatus has a function of simultaneously exposing the vicinity of the core wire tip by the dividing mechanism and compressing the core wire by the compression mechanism.

The terminal-attached electric wire of the present invention is formed by connecting the vicinity of the core wire tip of the covered electric wire with the insulation coating covering the core wire composed of a plurality of strands and the crimp portion of the closed barrel type terminal, It is an electric wire with a terminal connected in a state where the terminal can be energized, and the core wire exposed by dividing the vicinity of the tip of the insulation coating is exposed in the electric wire compressed in the cross-sectional direction of the core wire over the entire length in the longitudinal direction. The core wire and the vicinity of the core wire tip side of the insulating coating are inserted into the crimping portion and crimped and connected.

  According to the present invention, the covered electric wire can be connected to the connecting portion in a state where at least the vicinity of the exposed end of the core wire is compressed in the cross-sectional direction of the core wire. For this reason, when the crimping part of the crimping terminal is a cylindrical closed barrel type and the crimping terminal has a carrier, the vicinity of the core wire tip is compressed by compressing the vicinity of the core wire tip to be inserted into the cylindrical crimping part. There is no interference with the carrier cutter. For this reason, even if the crimping part of the crimping terminal is a cylindrical closed barrel type and the crimping terminal has a carrier, the electric wire with the terminal can be manufactured by the crimping device having the carrier cutter. The efficiency of manufacturing work can be improved.

It is side surface sectional drawing of the core wire exposure apparatus used for the electric wire manufacturing method with a terminal of this invention, The figure (a) shows the covered electric wire before parting a parting part, The figure (b) parting a parting part It shows the state. FIG. 2A is a front sectional view showing a holding member of the core wire exposing device of FIG. 1, and FIG. 2B is a front sectional view showing a roller of the core wire exposing device of FIG. It is side surface sectional drawing which shows the state which manufactures the electric wire with a terminal by the electric wire manufacturing method with a terminal of this invention using the core wire exposure apparatus of FIG. It is a figure for demonstrating the electric wire manufacturing method with a terminal of this invention using the core wire exposure apparatus of FIG. 1, The figure (a) is a side view which shows a covered electric wire, The figure (b) is a covered electric wire. It is a side view which shows the state which made the cut. It is a top view which shows the crimp terminal used in the electric wire manufacturing method with a terminal of this invention using the core wire exposure apparatus of FIG. It is side surface sectional drawing which shows other embodiment of the core wire exposure apparatus of this invention. It is side surface sectional drawing which shows other embodiment of the core wire exposure apparatus of this invention. It is a figure which shows other embodiment of the core wire exposure apparatus of this invention, The figure (a) shows the covered electric wire before parting a parting part, The figure (b) is front sectional drawing which shows a clamping member. is there. It is side surface sectional drawing which shows the state which manufactures the electric wire with a terminal with the conventional electric wire manufacturing method with a terminal. It is a top view which shows the crimp terminal used for the conventional electric wire manufacturing method with a terminal. It is a figure for demonstrating the conventional electric wire manufacturing method with a terminal, The figure (a) is a side view which shows a covered electric wire, The figure (b) is a side view which shows the state which made the cut | disconnection in the covered electric wire. FIG. 4C is a side view showing a state where the dividing portion is divided. It is side surface sectional drawing which shows the state which manufactures the electric wire with a terminal with the conventional electric wire manufacturing method with a terminal. It is a perspective view for demonstrating the subject which the conventional electric wire manufacturing method with a terminal should solve.

  Next, an embodiment of a method for manufacturing a terminal-attached electric wire and a core wire exposure device of the present invention will be described based on the drawings. In FIG. 1, the code | symbol 200 shows the core wire exposure apparatus of this invention.

  As shown in FIGS. 1 to 3, the method for manufacturing a terminal-attached electric wire according to the present invention includes the vicinity of the tip 20 of the coated wire 18 in which the insulating coating 16 covers the core wire 14 composed of a plurality of strands 12, and a crimp terminal (terminal ) 22 is a method of crimping the crimping portion (connecting portion) 24 of 22 and connecting the coated electric wire 18 and the crimping terminal 22 in a state where electricity can be passed. A dividing step for exposing the vicinity of the core wire tip 20, a compression step for compressing the exposed core wire tip 20 and the vicinity of the cut 28 of the insulation coating 16 (near the core wire tip side of the insulation coating) in the cross-sectional direction of the core wire 14, and the core wire tip A connection step of inserting and connecting the vicinity of 20 into the cylindrical crimping portion 24, and the exposure by the dividing step and the compression by the compression step are simultaneously performed by the core wire exposing device 200 shown in FIG. It is a method.

  As shown in FIG. 1, the core wire exposing device 200 connects the vicinity of the core wire tip 20 of the covered electric wire 18 and the crimp portion 24 of the crimp terminal 22 so that the covered electric wire 18 and the crimp terminal 22 can be energized. In order to connect, it is a device that exposes the vicinity of the core wire tip 20, and includes a cutting mechanism 202 that cuts the vicinity of the insulating coating tip 30 and exposes the core wire tip 20 vicinity. The dividing mechanism 202 also has a function as a compression mechanism that compresses the exposed vicinity of the core wire tip 20 and the vicinity of the cut 28 of the insulating coating 16 in the cross-sectional direction of the core wire 14.

  As shown in FIGS. 1 and 2, the dividing mechanism 202 is configured to hold the vicinity of the cut 28 of the insulating coating 16 with a cut 28 by a cutter or the like in the Z-axis direction (cross-sectional direction) and press and compress the two The member 204 and the two rollers 206 that nip the dividing portion 34 of the insulating coating 16 in the Z-axis direction and divide the dividing portion 34 while pressing and compressing the member 204 are provided.

  The two clamping members 204 can be moved in the Z-axis direction so as to be close to each other as shown in FIG. 1A by a slide mechanism (not shown), and FIG. 1B and FIG. As shown in FIG. 2 (a), the vicinity of the cut 28 of the insulating coating 16 is sandwiched in the Z-axis direction, and can be fixed in a pressed and compressed state. Further, as shown in FIG. 2A, the two holding members 204 have a substantially semicircular arc-shaped concave portion 205, and the concave portion 205 causes the vicinity of the cut 28 of the insulating coating 16 from the periphery to the center of the core wire 14. It is comprised so that it can press and compress toward it. The configuration of the slide mechanism is not particularly limited, such as a cylinder mechanism or a solenoid mechanism. In addition, the material of the two clamping members 204 is not specifically limited, such as resin or metal.

  The two rollers 206 can be moved in the Z-axis direction by another slide mechanism (not shown) so that the respective rotation center axes 208 are close to each other as shown in FIG. As shown in FIG. 1B and FIG. 2B, the rotation center shaft 208 can be fixed in a state where the dividing portion 34 of the insulating coating 16 is sandwiched in the Z-axis direction, pressed and compressed, and the rotation mechanism ( (Not shown) so as to rotate around the rotation center axis 208 in opposite directions to feed the dividing portion 34 in the X-axis direction (longitudinal direction of the core wire 14). Further, as shown in FIG. 2B, the two rollers 206 have a substantially semicircular arc-shaped recess 207, and the recess 207 presses the dividing portion 34 from the periphery toward the center of the core wire 14. It is configured to be compressible. The configuration of the other slide mechanism is not particularly limited, such as a cylinder mechanism or a solenoid mechanism. Further, the configuration of the rotation mechanism is not particularly limited, such as a motor mechanism. The material of the two rollers 206 is not particularly limited, such as resin or metal, but the surface has a coefficient of friction that can feed the dividing portion 34 in the X-axis direction.

  The operation of the core wire exposure apparatus 200 having such a configuration will be described below. Moreover, the manufacturing method of the electric wire with a terminal of this invention is demonstrated in detail below.

  First, the covered electric wire 18 shown in FIG. 4A and the crimp terminal (terminal) 22 shown in FIG. 5 are prepared. The crimp terminal 22 includes a cylindrical closed barrel-shaped crimp part 24 and a box part 25 connected to another terminal (not shown). In addition, the crimp terminal 22 is formed by cutting and bending a metal strip. As shown in FIG. 5, the bridge 210 continuing to one end on the crimp part 24 side of the crimp terminal 22 is continued to the carrier 212. A plurality of them are connected.

  As shown in FIG. 4B, the insulated wire 18 has a cut 28 formed in the insulating coating 16 by a cutter or the like, and the vicinity of the cut 28 of the insulating coating 16 is between the two holding members 204 of the core wire exposing device 200. Positioning is performed, and the vicinity of the core wire tip 20 is positioned between the two rollers 206.

  In the core wire exposure apparatus 200, as shown in FIG. 1A, the two clamping members 204 are moved and fixed in the Z-axis direction so as to approach each other, and the two rollers 206 approach each other. The rotation center shaft 208 is fixed by being moved in the Z-axis direction. Thereby, the vicinity of the cut 28 in the insulating coating 16 is pressed and compressed in the Z-axis direction by the two clamping members 204, and the dividing portion 34 is pressed and compressed in the Z-axis direction by the two rollers 206.

  Next, the two rollers 206 are rotated in directions opposite to each other, and as shown in FIG. 1B, the dividing portion 34 is sent out in the X-axis positive direction by the two rollers 206, and from the covered electric wire 18. It will be divided. At this time, the insulating coating 16 and the core wire 14 are firmly fixed by the compressive force P in the vicinity of the cut 28 of the insulating coating 16, and the two rollers 206 send out the dividing portion 34, so that the dividing portion 34 becomes the core wire 14. Therefore, tension is generated in the vicinity of the core wire tip 20 of the core wire 14. For this reason, the arrangement in the cross-sectional direction of the strands 12 near the tip end 20 of the core wire is changed to a direction in which the packing density is increased, or the strand 12 is slightly stretched and thinned, and the cross section of the core wire 14 is deformed thinly. In this manner, in the covered electric wire 18 connected to the crimp terminal 22, the vicinity of the core wire tip 20 of the core wire 14 and the vicinity of the cut 28 of the insulating coating 16 are compressed.

  In addition, when the dividing part 34 is divided from the covered electric wire 18, the dividing part 34 may be rotated around the central axis of the covered electric wire 18 and twisted. By twisting the dividing portion 34, the core wire 14 is twisted and gathered, and is easily inserted into the crimping portion 24.

  On the other hand, the crimp terminal 22 is positioned on the base 216 and the anvils 218 and 220 of the crimping device 214 shown in FIG. 3, and the bridge 210 and the carrier 212 are sandwiched in the groove 224 of the carrier cutter 222. The covered electric wire 18 in which the vicinity of the core wire tip 20 of the core wire 14 and the vicinity of the cut 28 of the insulating coating 16 are compressed is inserted into the cylindrical crimp portion 24 of the crimp terminal 22 from the core wire tip 20 side, as shown in FIG. It will be done.

  At this time, since the vicinity of the core wire tip 20 of the core wire 14 is compressed and tapered, the core wire tip 20 does not interfere with the carrier cutter 222. Further, since the vicinity of the cut 28 in the insulating coating 16 is similarly compressed and tapered, the vicinity of the cut 28 in the insulating coating 16 does not interfere with the carrier cutter 222.

  Moreover, although the case where the insulating coating 16 is divided and the exposed core wire 14 and the vicinity of the cut 28 are compressed has been described here, the present invention is not limited to this and includes the case where at least the exposed core wire 14 is compressed. . That is, the core wire tip 20 is inserted into the crimping part 24 without interfering with the carrier cutter 222 and then the carrier is cut, whereby the covered electric wire 18 can be inserted into the crimping terminal 22 without compressing the insulating coating 16. it can.

  Thus, when the covered electric wire 18 is inserted into the crimping part 24, the wire crimper 226, the insulation crimper 228, and the cut-off punch 230 are lowered from above, and the wire crimper 226 brings the crimping part 24 near the core wire tip 20. The insulation crimper 228 crimps the crimping portion 24 near the cut 28 of the core insulating coating 16. At this time, after the cut-off punch 230 abuts on the carrier cutter 222, it is lowered together with the carrier cutter 222, and the carrier 212 and the bridge 210 are cut. After that, laser welding is performed on the crimping portion 24, the covered electric wire 18 is connected to the crimp terminal 18 with a carrier, and the electric wire with terminal is manufactured.

  As described above, even if a plurality of continuous crimp terminals 22 with a carrier have a cylindrical crimp part 24, a plurality of electric wires with terminals are continuously connected by a crimping device 214 having a carrier cutter 222. Can be manufactured at the same time or simultaneously, and the efficiency of manufacturing work can be improved. Further, if an electric wire with a terminal is manufactured from the crimp terminal 22 having the tubular crimp part 24, the vicinity of the core wire tip 20 can be completely sealed by the crimp part 24, and the strand 12 is made of an aluminum-based material. Even when the crimp terminal 22 is made of a copper-based material, water can be prevented from entering, and corrosion of dissimilar metal contact portions can be prevented.

  As mentioned above, although one Embodiment of the electric wire manufacturing method with a terminal of this invention and a core wire exposure apparatus was described, this invention is not limited to the above-mentioned embodiment.

  For example, in the core wire exposure apparatus 200, as shown in FIG. 6, two pieces that hold the dividing portion 34 of the insulating coating 16 in the Z-axis direction and divide the dividing portion 34 while pressing and compressing the dividing portion 34. In addition to the roller 206, two rollers 209 may be provided that compress the vicinity of the dividing portion 34 and the cut 28 of the insulating coating 16 and clamp and fix the vicinity of the cut 28 of the insulating coating 16. In this case, after the two rollers 206 and the two rollers 209 are rotated and the coated electric wire 18 is sent in the positive direction of the X axis, the rotation of the two rollers 206 is continued and the rotation of the two rollers 209 is By stopping, the two rollers 209 can divide the dividing portion 34 in a state where the two rollers 209 sandwich and fix the vicinity of the cut 28 of the insulating coating 16.

  Further, in the core wire exposure apparatus 200, as shown in FIG. 7, the two sandwiching members 232 that sandwich and press and compress the vicinity of the cut 28 of the insulating coating 16 in the Z-axis direction and the dividing portion 34 are separated and separated. Further, after the vicinity of the core wire tip 20 is exposed, two clamping members 234 may be provided that sandwich and press the vicinity of the core wire tip 20 in the Z-axis direction and compress it. The compression by the two clamping members 232 may be before or after the dividing portion 34 is divided and removed to expose the vicinity of the core wire tip 20. Also by this core wire exposing device 200 and the method of manufacturing a terminal-attached electric wire using this core wire exposing device 200, the coated electric wire 18 is connected to the cylindrical crimping portion in a state where the vicinity of the cut 28 of the insulating coating 16 and the vicinity of the core wire tip 20 are compressed. 24 can be inserted smoothly.

  Moreover, in the core wire exposure apparatus 200, as shown in FIG. 8, you may provide the cutter 211 extended in the circumferential direction along the recessed part 205 of the clamping member 204. As shown in FIG. If this cutter 211 is provided, even if the cut 28 is not formed before the cutting operation, the cutter 211 is cut into the insulating coating 16 to form the cut 28 when the holding member 204 holds the covered electric wire 18, and then the cut 28 is formed. If the roller 206 is rotated, the dividing part 34 is divided.

  As mentioned above, although embodiment of the electric wire manufacturing method with a terminal and core wire exposure apparatus of this invention was described based on drawing, this invention is not limited to illustrated embodiment.

  For example, the crimp part of the crimp terminal according to the present invention is not limited to the open-end type, and may be a box-side one-end sealed crimp part. In the case of a box-side one-end sealed crimping part, the box-side one end of the crimping part may be laser processed and sealed before crimping. Moreover, even if it is an open barrel-type crimping | compression-bonding part, the connection operation | work to the crimping | compression-bonding part of a covered electric wire becomes easy by compressing and gathering the vicinity of a core wire tip. Moreover, the cross-sectional shape near the core wire tip after compressing the vicinity of the core wire tip is not particularly limited, such as a circle or a cross section.

  The present invention is not limited to the case where the crimping portion of the crimping terminal is a closed barrel type and the crimping terminal is provided with a carrier, and can be widely used for manufacturing a terminal-attached electric wire.

12: Wire 14: Core wire 16: Insulation coating 18: Coated wire 20: Core wire tip 22: Crimp terminal (terminal)
24: Crimping part (connection part)
25: Box portion 28: Cut 30: Insulation coating tip 34: Dividing portion 40: Residual portion 200: Core wire exposing device 202: Dividing mechanism 204, 232, 234: Holding member 206: Roller 208: Rotating center shaft 210: Bridge 212: Carrier 214: Crimping device 216: Base 218, 220: Anvil 222: Carrier cutter 224: Groove 226: Wire crimper 228: Insulation crimper 230: Cut-off punch

Claims (3)

A state in which the vicinity of the end of the core wire of the covered electric wire, which is covered with the insulation coating, and the connection part of the closed barrel type terminal can be connected and the covered electric wire and the terminal can be energized Is a method of manufacturing a wire with a terminal to be connected to
A step of dividing the vicinity of the insulating coating tip to expose the vicinity of the core wire tip; and
A compression step of compressing the exposed core wire in the cross-sectional direction of the core wire over the entire length in the longitudinal direction;
A connection step of inserting and connecting the exposed core wire and the vicinity of the core end side of the insulation coating into the connection portion; and
A method for manufacturing an electric wire with a terminal including:   2. The method for manufacturing a terminal-attached electric wire according to claim 1, wherein the compression step is a step of compressing at least the exposed core wire and the vicinity of the core wire tip side of the insulating coating. The connecting portion of the terminal is cylindrical;
The method for manufacturing a terminal-attached electric wire according to claim 1, wherein the connecting step is a step of inserting and connecting the vicinity of the end of the core wire in an axial direction of the connecting portion.

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