JP2017054665A - Wire with terminal and manufacturing method of wire with terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology capable of making a conductor connection part of a terminal compact and fitting a covering tube without damaging it.SOLUTION: A wire with terminal is prepared (preparation step S11). In the wire with terminal, a conductor part 21 of a covered conductor 20 is welded to a tabular conductor connection part 33 in a terminal fitting 30 in a spread state. Continuously, one-side tabular portion 332 and other-side tabular portion 333 at both sides of the conductor connection part 33 are bent insides, thereby overlapping an intermediate tabular portion 331 (first bending step S12 and second bending step S13). At such a time, a tip 332T of the one-side tabular portion 332 and a tip 333T of the other-side tabular portion 333 are disposed inside of both ends 33E1 and 33E2 of the conductor connection part 33 in a width direction. The conductor part 21 of the covered conductor 20 is also welded to all the intermediate tabular portion 331, the one-side tabular portion 332 and the other-side tabular portion 333.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an electric wire with a terminal in which a conductor of an electric wire is welded to a conductor connecting portion of a terminal.

  Patent Document 1 discloses a technique for connecting a core wire (conductor portion) of an aluminum electric wire to a terminal by welding. Specifically, at the time of ultrasonic welding, the exposed core wire portion accommodated in the terminal fitting is pressed against the welded portion of the semi-cylindrical surface of the terminal fitting by the welding horn. And by applying high frequency vibration, the core wire and the core wire connecting portion of the terminal are ultrasonically welded.

JP 2009-259702 A

  In the above prior art, the core wire portion is spread and welded to the curved terminal fitting. For this reason, compared with the case where a core part is connected to a flat terminal metal fitting, lateral width is small. However, when the shape is simply curved, the lateral width of the terminal increases as the core portion of the electric wire becomes thicker. When the width of the terminal fitting is increased, there is a possibility that the degree of freedom in the layout of the assembly destination is lowered.

  In addition, in the case of the terminal fitting described in Patent Document 1, since both edges in the width direction are overhanging, for example, when a core tube connecting portion is covered with a covering tube (for example, a heat shrinkable tube) for corrosion prevention. The coated tube may be damaged.

  Then, an object of this invention is to provide the technique which can make the conductor connection part of a terminal compact and can attach without damaging a covering tube.

  In order to solve the above-described problem, a first aspect includes an electric wire, a conductive connection portion that is conductively connected to a member to be connected, and a terminal having a conductor connection portion welded to the conductor portion of the electric wire. The conductor connecting portion is connected to the first plate-shaped portion with the first plate-shaped portion and the first plate-shaped portion folded from one side to the other side in the width direction of the first plate-shaped portion. A second plate-like portion that is overlaid and a third plate-like portion that is overlaid on the first plate-like portion in a state of being folded from the other side in the width direction of the first plate-like portion to one side. And the tip of the second plate-like portion and the tip of the third plate-like portion are arranged on the inner side of both ends in the width direction of the conductor connecting portion, and the conductor portion of the electric wire Are welded to all of the first plate-like portion, the second plate-like portion, and the third plate-like portion.

  Moreover, a 2nd aspect is an electric wire with a terminal which concerns on a 1st aspect, Comprising: The said 2nd plate-shaped part and the said 3rd plate-shaped part have mutually overlapped.

  Moreover, a 3rd aspect is an electric wire with a terminal which concerns on a 1st or 2nd aspect, Comprising: The bending part between the said 1st plate-shaped part and the said 2nd plate-shaped part, and the said 1st plate-shaped part And at least one of the bent portions between the third plate-like portions, a groove extending in a direction crossing the width direction is formed on the surface opposite to the surface to which the conductor portion is welded. Has been.

  Moreover, a 4th aspect is an electric wire with a terminal which concerns on any one of the 1st to 3rd aspect, Comprising: The said width direction of the surface side to which the said conductor part is welded among the said conduction | electrical_connection connection parts. The edge extending to is chamfered.

  Moreover, a 5th aspect is an electric wire with a terminal which concerns on any one of the 1st to 4th aspect, Comprising: The said front-end | tip part of the said 2nd plate-shaped part, and the said front-end | tip part of the said 3rd plate-shaped part Of these, at least one edge of the surface opposite to the surface to which the conductor is welded is chamfered.

  A sixth aspect is a terminal-attached electric wire according to any one of the first to fifth aspects, wherein the conductor portion of the electric wire is formed of aluminum or an aluminum alloy.

  The seventh aspect is a method of manufacturing a terminal-attached electric wire in which the conductor portion of the electric wire is welded to the conductor connection portion of the terminal, and (a) the conductor portion of the electric wire is formed on the plate-like portion of the terminal. A preparation step of preparing an electric wire with terminal welded in an unfolded state; and (b) by bending the plate-like portion, from the first plate-like portion and one side in the width direction of the first plate-like portion. In a state where it is folded to the other side, the second plate portion that is superimposed on the first plate-like portion, and a state that is folded from the other side in the width direction of the first plate-like portion to one side, A third plate-like portion superimposed on the first plate-like portion and a bending step to form, wherein in the bending step, the tip end portion of the second plate-like portion and the tip end portion of the third plate-like portion are The conductor connection portion is arranged on the inner side than both end portions in the width direction, and the conductor portion of the electric wire The first plate portion, in any are welded also the second plate-shaped portion and the third plate-shaped portion.

  According to the electric wire with a terminal concerning the 1st to the 6th mode, it can control that the end face of the both sides of the width direction of a terminal is arranged at the both ends of the width direction of a terminal. For this reason, when a covering tube is attached, it can control that a covering tube is damaged. Moreover, since the conductor part of the electric wire is spread and welded to the first plate-like part, the second plate-like part, and the third plate-like part, the conductor part can be firmly fixed to the conductor connection part. Thereby, since the force which clamps a conductor part between a 1st plate-shaped part, a 2nd plate-shaped part, and a 3rd plate-shaped part can be made small, it can reduce that a conductor part is damaged.

  According to the electric wire with a terminal concerning the 2nd mode, the width of the conductor connection part can be further narrowed by folding so that the 2nd plate-like part and the 3rd plate-like part may overlap.

  According to the electric wire with a terminal concerning the 3rd mode, bending of each connecting part becomes easy because the groove is formed.

  According to the electric wire with a terminal concerning the 4th mode, it can reduce that the conductor part welded to the terminal receives damage by contacting the edge part piled up on it.

  According to the terminal-attached electric wire according to the fifth aspect, when the coated tube is attached to the outside, the tube is reduced from hitting the edge of the tip portion on the other main surface side of the one side plate portion or the other side plate portion to be damaged. it can.

  According to the electric wire with a terminal concerning the 6th mode, even if the conductor part becomes thick by adopting aluminum or aluminum alloy, when the conductor part is expanded and welded, only a part becomes thick when bent. It can suppress that it is too much.

  According to the manufacturing method of the electric wire with a terminal concerning the 7th mode, it can control that the end face of the both sides of the width direction of a terminal is arranged on both ends of the width direction of a terminal. For this reason, when a covering tube is attached, it can control that a covering tube is damaged. Moreover, since the conductor part of the electric wire is spread and welded to the first plate-like part, the second plate-like part, and the third plate-like part, the conductor part can be firmly fixed to the conductor connection part. Thereby, since the force which clamps a conductor part between a 1st plate-shaped part, a 2nd plate-shaped part, and a 3rd plate-shaped part can be made small, it can reduce that a conductor part is damaged.

It is a figure which shows the terminal metal fitting which concerns on 1st Embodiment. It is a schematic perspective view which shows the conductor part of the covered electric wire welded to the terminal metal fitting which concerns on 1st Embodiment. It is a figure which shows a mode that the electric wire with a terminal is formed by folding the conductor connection part by which the conductor part of the covered electric wire was welded. It is a schematic sectional drawing which shows the conductor connection part of the folded state which concerns on 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the component described in this embodiment is an illustration to the last, and is not a thing of the meaning which limits the scope of the present invention only to them. In the drawings, the size and number of each part may be exaggerated or simplified as necessary for easy understanding.

<1. First Embodiment>
FIG. 1 is a view showing a terminal fitting 30 according to the first embodiment. In FIG. 1, two surfaces of a welding surface 33 </ b> S of the terminal fitting 30 and a proximal end surface 37 </ b> S are shown. FIG. 2 is a schematic perspective view showing the conductor portion 21 of the covered electric wire 20 welded to the terminal fitting 30 according to the first embodiment.

  The terminal-attached electric wire of the present embodiment is configured by connecting a terminal fitting 30 to the tip end portion of the covered electric wire 20. In this example, it is assumed that the terminal fitting 30 is used by being connected to a device (not shown) such as a battery, an inverter, or a motor that constitutes a power source for traveling in an electric vehicle, for example.

  The covered electric wire 20 is obtained by coating a conductor portion 21 formed by twisting a plurality of thin aluminum metal wires with a resin insulating coating 22 (insulating layer). Is stripped off to expose the conductor 21. And the conductor part 21 is softened by a welding process, and the conductor part 21 of the covered electric wire 20 and the conductor connection part 33 of the terminal metal fitting 30 are welded (welded). In addition, it is not essential that the conductor portion 21 of the covered electric wire 20 of the present embodiment is made of aluminum or aluminum alloy, and may be made of copper or copper alloy. However, weight reduction and cost reduction of the covered wire 20 can be achieved by making the conductor portion 21 made of aluminum or aluminum alloy. In addition, the conductor part 21 does not necessarily need to be formed with a plurality of aluminum wires, and may be formed with, for example, a single large-diameter aluminum wire.

  The terminal fitting 30 is a member formed by punching a conductive plate-like member whose main component is a metal such as copper or tin. The terminal fitting 30 includes a conduction connection portion 31 provided on the distal end side and a conductor connection portion 33 provided on the proximal end side. An annular through hole is formed at the center of the conductive connection portion 31. The conductor connection portion 33 is a plate-like portion formed in a substantially rectangular shape that is continuous with the conduction connection portion 31 and is wider than the conduction connection portion 31.

  The terminal fitting 30 is fixed to an earth point provided on a part of the panel of the vehicle body by a bolt that is passed through the through hole of the conduction connecting portion 31 and a nut that is screwed to the bolt. That is, the terminal fitting 30 is configured as a ground terminal connected to the ground point so as to be conductive. The terminal fitting of the present invention is not limited to the ground terminal. For example, you may make it accommodate in the cavity in the connector which is not shown in figure by forming a conduction | electrical_connection connection part in female terminal metal fittings, such as a box-shaped cylinder shape.

  The conductor connection portion 33 is a plate-like portion that is substantially rectangular in plan view. The main surface (widest surface) on one side constitutes a welding surface 33S to which the conductor portion 21 of the covered electric wire 20 is welded. As will be described later, the conductor connecting portion 33 is made compact by folding both end portions in the width direction inward in a state where the conductor portion 21 is welded to the welding surface 33S. FIG. 1 shows the conductor connection portion 33 in a state before being folded.

  When welding the conductor part 21 to the conductor connection part 33, first, the conductor part 21 formed by twisting is uniformly spread over substantially the entire welding surface 33 </ b> S of the conductor connection part 33. At this time, the thickness of the expanded conductor portion 21 is set to be approximately the same as the thickness of the conductor connecting portion 33 (for example, 1 to 3 mm). Further, the conductor portion 21 is arranged on the base end side of the conductor connecting portion 33 so as to extend. And the conductor part 21 is welded to the conductor connection part 33 by various welding methods, such as ultrasonic welding, resistance welding, and arc welding.

  FIG. 3 is a diagram illustrating a state in which the terminal-attached electric wire is formed by folding the conductor connection portion 33 to which the conductor portion 21 of the covered electric wire 20 is welded. FIG. 3 shows a cross section of the conductor portion 21 and the conductor connecting portion 33 at the position AA shown in FIG.

  First, as shown in FIG. 3, a terminal-attached electric wire welded in a state where the conductor portion 21 of the covered electric wire 20 is spread over the plate-like conductor connecting portion 33 of the terminal fitting 30 is prepared (preparation step S11). .

  Subsequently, the one-side plate-like portion 332 in the width direction of the conductor connecting portion 33 is folded inward (that is, the other side) (first bending step S12). At this time, the conductor portion 21 welded to the one-side plate-like portion 332 is bent so that the welding surface 33S side becomes the valley side, so that the intermediate plate-like portion 331 (portion located in the middle in the width direction of the conductor connecting portion 33). Is pressed against the conductor portion 21 welded to. In this example, the one side plate-like portion 332 is folded so as to be substantially parallel to the intermediate plate-like portion 331. The intermediate plate portion 331 corresponds to the first plate portion, and the one side plate portion 332 corresponds to the second plate portion.

  Subsequently, the other side plate-like portion 333 in the width direction of the conductor connection portion 33 is folded inward (that is, one side) (second bending step S13). At this time, it is bent so that the welding surface 33S side becomes the valley side. And in this example, the other side plate-shaped part 333 is piled up on the one side plate-shaped part 332 bent previously. That is, the conductor portion 21 welded to the other side plate-like portion 333 is pressed against the back surface (the main surface opposite to the welding surface 33S) of the one side plate-like portion 332. As a result, the other side plate-like portion 333 is vertically stacked on the intermediate plate-like portion 331 via the one side plate-like portion 332. Here, the other side plate portion 333 is folded so as to be substantially parallel to the intermediate plate portion 331 and the one side plate portion 332. The other side plate-shaped portion 333 corresponds to a third plate-shaped portion. Thus, in this example, the plate-like conductor connecting portion 33 is wound and folded in three by the first bending step S12 and the second bending step S13.

  In this way, the width of the conductor connecting portion 33 can be reduced by folding the conductor connecting portion 33. Thereby, the freedom degree of the layout of the attachment destination of the electric wire with a terminal can be raised.

  Here, a bent portion connecting the intermediate plate portion 331 and the one side plate portion 332 is a bent portion 332C, and a bent portion connecting the intermediate plate portion 331 and the other side plate portion 333 is a bent portion 333C. . As shown in FIG. 3, the width of the bent portion 333C before being bent is larger than the width of the bent portion 332C before being bent. This is because when the other side plate-like portion 333 is bent inward in the second bending step S13, since the one side plate-like portion 332 is bent first, the thickness of the conductor connecting portion 33 is increased. This is because the bent portion 333C needs to be wide.

  In the folded conductor connecting portion 33, the tip end portion 332 </ b> T of the one side plate-shaped portion 332 is disposed inside the folded conductor connecting portion 33. And the front-end | tip part 333T of the other side plate-shaped part 333 is distribute | arranged to the outer peripheral part of the conductor connection part 33 folded. Further, the tip end portion 332T of the one side plate-like portion 332 and the tip end portion 333T of the other side plate-like portion 333 are both end portions 33E1 and 33E2 on both sides of the conductor connecting portion 33 in the width direction (the width direction of the bent portions 332C and 333C). It is arranged inside the outermost part).

  For the purpose of preventing corrosion of the conductor connecting portion 33, a covering tube 40 (such as a heat-shrinkable tube) may be attached to the conductor connecting portion 33. In the case of the folded conductor connecting portion 33 of this example, the outer peripheral surface of the conductor connecting portion 33 and the tip end portion 333T of the other side plate-like portion 333 arranged on the outer side are in contact with the covering tube 40. The outer peripheral surface of the conductor connecting portion 33 is composed of an intermediate plate portion 331, the other plate portion 333, and the back surfaces of the bent portions 332C and 333C. For this reason, it can be said that the coated tube 40 is hardly damaged on these surfaces. Further, since the tip end portion 333T of the other side plate-shaped portion 333 is located inside the end portions 33E1 and 33E2 on both sides of the conductor connecting portion 33, the possibility of hitting the covering tube 40 is small. In other words, the folded conductor connecting portion 33 has a configuration in which anticorrosion measures are easy.

  Further, in order to facilitate bending, the portions corresponding to the bent portions 332C and 333C intersect with the width direction (here, the direction perpendicular to the width direction and the conductive connection portion 31 and the conductor connection portion 33). Bending groove 35 extending in the connecting direction) is formed. In this example, in the bent portion 332C, one wedge-shaped bent groove 35 is formed near the middle of the back surface. Further, in the bent portion 333C, wedge-shaped bent grooves 35 are formed on the back surface, near the boundary with the intermediate plate portion 331 and near the boundary with the other side plate portion 333, respectively. A plurality of bending grooves 35 are formed in the vicinity of the boundary with the other side plate-like portion 333.

  It is not essential to form the bending groove 35 on the back surface of the conductor connecting portion 33. Further, a bending groove 35 may be formed on the welding surface 33 </ b> S side of the conductor connection portion 33.

  Further, an edge portion 371 (a boundary portion between the welding surface 33S and the end surface 37S) extending in the width direction on the welding surface 33S side and the base end side in the conductor connection portion 33 of the terminal fitting 30 is chamfered. Since the edge portion 371 is chamfered, as shown in FIG. 2, the conductor portion 21 welded to the welding surface 33 </ b> S of the conductor connection portion 33 hits the edge portion 371 on the proximal end side of the conductor connection portion 33 and is damaged. Can be reduced. In addition, it is not essential that the entire edge portion 371 is chamfered, and only a part thereof may be chamfered. For example, only the middle portion in the width direction of the edge portion 371 may be chamfered. Further, the edge 373 at the boundary between the back surface and the end surface 37S may be chamfered.

  Further, the edge portions 391 and 393 on the back surface side of the conductor connection portion 33 of the terminal fitting 30 and on both sides in the width direction are also chamfered. The edge portion 391 is an edge portion of the tip portion 332T of the one side plate-shaped portion 332, and the edge portion 393 is an edge portion of the tip portion 333T of the other side plate-like portion 333.

  In this example, the edge portion 391 is an edge portion of the tip end portion 332T disposed inside the folded conductor connection portion 33, as shown in FIG. By chamfering the edge portion 391, the conductor portion 21 can be prevented from being damaged by hitting the edge portion 391. Further, in this example, the edge portion 393 is an edge portion of the distal end portion 333T disposed on the outer peripheral portion of the folded conductor connection portion 33 as shown in FIG. ing. For this reason, by chamfering the edge portion 393, it is possible to reduce the damage of the covering tube 40 against the edge portion 393.

  In addition, it is not essential that both edge portions 391 and 393 on both sides in the width direction of the conductor connection portion 33 are chamfered. For example, in the folded conductor connection portion 33, only the edge portion 393 disposed on the outer peripheral portion is chamfered, and the edge portion 391 disposed on the inner side may not be chamfered.

  Moreover, in this example, not only the edge portions 391 and 393 on the back side but also the edge portions 395 and 397 on the welding surface 33S side are chamfered among the edges of the tip portions 332T and 333T. By chamfering the edge portion 395 of the distal end portion 332T, damage to the inner conductor portion 21 can be reduced. Further, by chamfering the edge portion 397 of the distal end portion 333T, it is possible to reduce damage to the coated tube.

  Furthermore, in the present embodiment, the conductor portion 21 of the covered electric wire 20 is spread in advance so as to straddle the intermediate plate portion 331, the one side plate portion 332, and the other side plate portion 333, and each welding surface 33S. Welded to. That is, the conductor part 21 is firmly fixed to the conductor connection part 33 by welding. If the welding is not performed, the conductor portion 21 must be firmly sandwiched between the intermediate plate portion 331, the one side plate portion 332, and the other side plate portion 333. If the force is too strong, the conductor portion 21 is damaged. There is a risk. Further, for example, even when the welding is performed only on the intermediate plate-shaped portion 331 and not on the one-side plate-shaped portion 332 and the other-side plate-shaped portion 333, the conductor portion 21 is connected to the intermediate-plate-shaped portion 331 and the one-side plate-shaped portion 332 In addition, it is necessary to firmly sandwich the other side plate-like portion 333. If the force is too strong, the conductor portion 21 may be damaged. On the other hand, like this embodiment, when the conductor connection part 33 is folded by spreading and welding the conductor part 21 to the entire conductor connection part 33, the intermediate plate part 331 and the one side plate part The force which clamps the conductor part 21 between 332 and the other side plate-shaped part 333 can be made comparatively small. For this reason, it can suppress that the conductor part 21 is damaged.

<2. Second Embodiment>
Next, a second embodiment will be described. In the following description, elements having the same functions as those already described may be denoted by the same reference numerals or reference numerals added with alphabets, and detailed description may be omitted.

  FIG. 4 is a schematic cross-sectional view showing the conductor connection portion 33a in a folded state according to the second embodiment. In the conductor connection portion 33a of the present embodiment, the portions on both sides of the intermediate plate portion 331a (one side plate portion 332a and the other side plate portion 333a) are folded inward so as not to overlap each other, so-called open-view folding. It is formed. The conductor portion 21 is welded to any of the intermediate plate portion 331a, the one side plate portion 332a, and the other side plate portion 333a.

  By folding as in this example, the end portions 332Ta and 333Ta of the one side plate-like portion 332a and the other side plate-like portion 333a can be opposed to the end portions 33E1 and 33E2 on both sides. For this reason, it is possible to prevent the tip portions 332Ta and 333Ta from directly contacting the covering tube 40 when the covering tube 40 is put on the conductor connection portion 33a for corrosion prevention or the like. For this reason, it can reduce that the covering tube 40 is damaged.

<3. Modification>
Although the embodiment has been described above, the present invention is not limited to the above, and various modifications are possible.

  For example, in the first embodiment, the both ends in the width direction are folded to fold the plate-like conductor connection portion 33 into three windings. The size may be reduced by reducing the width.

  Further, the terminal fitting 30 may include a portion (for example, a crimped piece to be crimped and crimped) connected to the insulating coating 22 of the covered electric wire 20 in addition to the conduction connecting portion 31 and the conductor connecting portion 33.

  In the first embodiment, the conductor portion 21 is welded to all of the intermediate plate portion 331, the one side plate portion 332, the other side plate portion 333, and the bent portions 332C and 333C. For example, the bent portion 332C, In 333C, it is not essential that the conductor portion 21 is welded. Bending can be facilitated by not welding the conductor portion 21 at the bent portions 332C and 333C.

  Although the present invention has been described in detail, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention. In addition, the configurations described in the above embodiments and modifications can be appropriately combined or omitted as long as they do not contradict each other.

DESCRIPTION OF SYMBOLS 20 Covered electric wire 21 Conductor part 22 Insulation coating 30 Terminal metal fitting 31 Conductive connection part 33 Conductor connection part 33E1, 33E End part 33S Welding surface 33a Conductor connection part 35 Bending groove 37S End surface 40 Plate-like part)
332, 332a One side plate-like part (second plate-like part)
332C, 333C Bending part 332T, 332Ta Tip part 333, 333a Other side plate-like part (third plate-like part)
333T, 333Ta tip 371 edge 391, 393, 395, 397 edge S11 preparation step S12 first bending step S13 second bending step

Claims (7)

An electric wire with a terminal comprising an electric wire, a conductive connecting portion conductively connected to a member of a connection partner, and a terminal having a conductor connecting portion welded to a conductor portion of the electric wire,
The conductor connecting portion is
A first plate-like portion;
A second plate-shaped portion that is superimposed on the first plate-shaped portion in a state of being folded from one side to the other side in the width direction of the first plate-shaped portion;
A third plate-shaped portion that is overlaid on the first plate-shaped portion in a state where the first plate-shaped portion is folded from the other side in the width direction to the one side;
With
The distal end portion of the second plate-shaped portion and the distal end portion of the third plate-shaped portion are arranged on the inner side than both end portions in the width direction of the conductor connection portion,
The electric wire with a terminal, wherein the conductor portion of the electric wire is welded to any of the first plate-like portion, the second plate-like portion, and the third plate-like portion. It is an electric wire with a terminal according to claim 1,
The electric wire with a terminal, wherein the second plate-like portion and the third plate-like portion overlap each other. It is an electric wire with a terminal according to claim 1 or 2,
In at least one of the bent portion between the first plate-like portion and the second plate-like portion and the bent portion between the first plate-like portion and the third plate-like portion, the conductor portion is A terminal-attached electric wire in which a groove extending in a direction intersecting the width direction is formed on a surface opposite to a surface to be welded. It is an electric wire with a terminal given in any 1 paragraph of Claims 1-3,
The electric wire with a terminal by which the edge part extended in the said width direction of the surface side where the said conductor part is welded among the said conduction | electrical_connection connection parts is chamfered. It is an electric wire with a terminal given in any 1 paragraph of Claims 1-4,
At least one of the tip portion of the second plate-like portion and the tip portion of the third plate-like portion is chamfered at the edge of the surface opposite to the surface to which the conductor is welded. There are electric wires with terminals. It is an electric wire with a terminal given in any 1 paragraph of Claims 1-5,
The electric wire with a terminal, wherein the conductor portion of the electric wire is formed of aluminum or an aluminum alloy. A method of manufacturing an electric wire with a terminal in which a conductor portion of an electric wire is welded to a conductor connection portion of a terminal,
(a) a preparation step of preparing a terminal-attached electric wire welded in a state in which the conductor portion of the electric wire is spread in a plate-like portion in the terminal;
(b) By bending the plate-like portion, the first plate-like portion is overlapped with the first plate-like portion in a state of being folded from one side to the other side in the width direction of the first plate-like portion. A second plate-like portion, and a third plate-like portion overlaid on the first plate-like portion in a state of being folded from the other side in the width direction of the first plate-like portion to the one side. Bending process,
Including
In the bending step,
The distal end portion of the second plate-shaped portion and the distal end portion of the third plate-shaped portion are arranged on the inner side than both end portions in the width direction of the conductor connection portion,
The method for manufacturing a terminal-attached electric wire, wherein the conductor portion of the electric wire is welded to any of the first plate-like portion, the second plate-like portion, and the third plate-like portion.

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