Terminal, electric wire with terminal, wire harness, and method for manufacturing terminal

Abstract

To suppress bending deformation of a terminal.SOLUTION: A crimp terminal 1A includes a contact portion 10 provided to be contactable with an external terminal, a crimp portion 40 provided to make it possible to crimp on a covered wire 2, and a connecting portion 20 that connects the contact portion 10 and the crimp portion 40. The contact portion 10 is formed by folding over both ends of a blank in a width direction (in the X-axial direction) to the center. Notches 12A and 12B are formed at the end portions of the connecting portion 20 on a folded-over portion of the contact portion 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a terminal, an electric wire with a terminal, a wire harness, and a method for manufacturing a terminal. [Background technology]

[0002] Terminals to be crimped to electric wires are disclosed in, for example, Patent Document 1 and Patent Document 2. The male terminal disclosed in Patent Document 1 is composed of a rectangular tubular main body, a fixing part provided at the rear end of the main body, and a tab provided at the front end of the main body. The tab connected to the female terminal is formed in a double-structure plate shape with both left and right side edges of a strip folded over on the upper surface side, and an opening is formed on the upper surface of the base part of the tab. The crimp terminal disclosed in Patent Document 2 has a male contact part formed by bending a flat plate material 180 degrees. The male contact part is a part that fits into the mating female terminal, and is connected to the part that becomes the contact point with the electric wire by a plate part. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-82015 A [Patent Document 2] Japanese Patent Application Publication No. 4-39880 Summary of the Invention [Problem to be solved by the invention]

[0004] The terminals disclosed in Patent Documents 1 and 2 are formed by progressively pressing a plate material that has been punched out by a primary press. In the terminal disclosed in Patent Document 1, the tab, main body, and fixing portion are formed when the plate material is bent by pressing. In the case of the crimp terminal disclosed in Patent Document 2, the male contact portion and the slot are connected by a plate-like portion, and the mutual influence between the male contact portion and the slot can be suppressed by the plate-like portion during molding, but the plate-like portion can be bent.

[0005] The present invention has been made in view of the above, and has an object to provide a technique for suppressing bending deformation of a terminal. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the terminal of the present invention is a terminal comprising a contact portion arranged so as to be in contact with an external terminal, a crimping portion arranged so as to be crimpable to an electric wire, and a connecting portion connecting the contact portion and the crimping portion, wherein the contact portion is formed by folding both ends of a plate material in the width direction toward the center, and the end of the folded portion of the contact portion on the connecting portion side has a width that narrows as it approaches the width direction end of the connecting portion.

[0007] The terminal according to one aspect of the present invention may have a cross section formed into a rectangle by intersecting plate material between the connecting portion and the crimping portion, and may have a fixed portion attached to the housing.

[0008] In the terminal according to one aspect of the present invention, the connecting portion may have both ends in a width direction of a portion connected to the contact portion folded toward the center.

[0009] In the terminal according to one aspect of the present invention, the end of the folded portion of the contact portion on the connecting portion side may have a notch that is arc-shaped, trapezoidal, or rectangular.

[0010] In a terminal according to one embodiment of the present invention, the center in the width direction at the end portion on the connecting portion side of the folded portion of the contact portion may be formed in a mountain shape toward the connecting portion.

[0011] An electric wire with terminal according to one embodiment of the present invention is an electric wire with terminal including: a coated electric wire having a conductor and an insulating coating that coats the conductor; and any one of the above-mentioned terminals joined to the coated electric wire.

[0012] A wire harness according to one aspect of the present invention includes the electric wire with terminal described above, and is arranged in an automobile.

[0013] One aspect of the present invention is a method for manufacturing a terminal having a contact portion electrically connected to an external terminal, a crimping portion to be crimped to an electric wire, and a connecting portion connecting the contact portion and the crimping portion, the method including a step of bending a metal plate and folding both widthwise ends of the plate toward the center to form the contact portion, the end of the folded portion of the contact portion facing the connecting portion narrowing in width as it approaches the widthwise end of the connecting portion. Effect of the Invention

[0014] According to the present invention, bending deformation of the terminal can be suppressed. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a perspective view of a crimp terminal according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a front view of the crimp terminal according to the embodiment. [Diagram 3] FIG. 3 is a plan view of the crimp terminal according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Diagram 5] FIG. 5 is a cross-sectional view taken along line BB in FIG. [Figure 6]FIG. 6 is a cross-sectional view taken along line CC and line DD in FIG. [Figure 7] FIG. 7 is a plan view of a blank according to the embodiment. [Figure 8] FIG. 8 is a diagram showing a manufacturing apparatus for manufacturing the crimp terminal. [Figure 9] FIG. 9 is a diagram showing the progress of the secondary press when manufacturing a crimp terminal. [Figure 10] FIG. 10 is a diagram showing the progress of the secondary press when manufacturing a crimp terminal. [Figure 11] FIG. 11 is a diagram showing the progress of the secondary press when manufacturing a crimp terminal. [Figure 12] FIG. 12 is a diagram showing the progress of the secondary press when manufacturing a crimp terminal. [Figure 13] FIG. 13 is a diagram showing the progress of the secondary press when manufacturing a crimp terminal. [Figure 14] FIG. 14 is a diagram showing the progress of the secondary press when manufacturing a crimp terminal. [Figure 15] FIG. 15 is a plan view of the chained terminals. [Figure 16] FIG. 16 is a perspective view of the wire harness. [Figure 17] FIG. 17 is a plan view of a contact portion and a connecting portion according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiment described below. In addition, in the description of the drawings, the same or corresponding elements are appropriately given the same reference numerals. Furthermore, it should be noted that the drawings are schematic, and the dimensional relationship of each element may differ from the actual one. There may be parts in which the dimensional relationship and ratio differ between the drawings. In addition, XYZ coordinate axes are appropriately shown in the drawings, and directions are described using them. In the space shown by the XYZ coordinate axes, the direction in which the X component increases is called the +X direction, and the direction in which the X component decreases is called the -X direction. Similarly, the Y and Z components are defined as the +Y direction, the -Y direction, the +Z direction, and the -Z direction.

[0017] [Embodiment] Fig. 1 is a perspective view of a crimp terminal 1A and a coated electric wire 2 according to an embodiment of the present invention, Fig. 2 is a front view of the crimp terminal 1A, and Fig. 3 is a plan view of the crimp terminal 1A. Also, Fig. 4 is a cross-sectional view taken along line AA in Fig. 3, Fig. 5 is a cross-sectional view taken along line BB in Fig. 4, Fig. 6(a) is a cross-sectional view taken along line CC in Fig. 2, and Fig. 6(b) is a cross-sectional view taken along line DD in Fig. 2.

[0018] In this embodiment, the coated electric wire 2 has a conductor 2a and an insulating coating 2b. The coated electric wire 2 has a conductor exposed portion 212 at its tip where the insulating coating 2b on the outer periphery of the conductor 2a is removed to expose a predetermined length of the conductor 2a. The conductor 2a is composed of seven strands 211, and is made of, for example, high-purity aluminum (Al) or aluminum alloy (Al alloy), but is not necessarily limited to these materials. The conductor 2a may be a compressed conductor formed by compressing seven strands 211 twisted in an S-shape. The number of strands 211 constituting the conductor 2a is not limited to seven, and may be other numbers. The conductor 2a may be a solid wire, not twisted. The insulating coating 2b is an insulating portion formed on the outer periphery of the conductor 2a. The insulating coating 2b is made of an insulating resin, such as polyvinyl chloride (PVC), polyethylene, or a non-halogen material. An additive such as a plasticizer may be added to the resin constituting the insulating coating 2b. The coated electric wire 2 has a cross-sectional area of, for example, 5 mm2 The cross-sectional area of ​​the covered electric wire 2 is the sum of the cross-sectional areas of the individual wires 211, that is, the total cross-sectional area.

[0019] The crimp terminal 1A is a male terminal that is crimped to and electrically joined with a coated electric wire 2, and is a closed barrel type terminal having a cylindrical shape. The crimp terminal 1A is formed by progressive press processing of a blank 1 made of copper or a copper alloy whose surface has been tin-plated (Sn-plated) in the shape shown in Fig. 7. Examples of copper alloys that form the crimp terminal 1A include brass, phosphor bronze, and Corson copper alloys. The crimp terminal 1A includes a contact portion 10, a connecting portion 20, a fixed portion 30, and a crimping portion 40 from the -Y direction side to the +Y direction side.

[0020] The crimping portion 40 includes a coating crimping portion 40a, a first inclined portion 40b, a conductor crimping portion 40c, a second inclined portion 40d, and a sealing portion 40e from the +Y direction side to the -Y direction side, and is formed in a cylindrical shape with a space 401 inside. The coating crimping portion 40a is a portion that is crimped to the insulating coating 2b of the coated electric wire 2, and its cross section along the XZ plane is annular. The inner surface of the coating crimping portion 40a may be formed with a plurality of annular grooves aligned along the XZ plane in the Y-axis direction. By providing a plurality of grooves on the inner surface of the coating crimping portion 40a, the grooves bite into the insulating coating 2b when the coating crimping portion 40a is crimped to the insulating coating 2b, so that the coated electric wire 2 is less likely to come off the crimp terminal 1A.

[0021] The first inclined portion 40b has an outer diameter and an inner diameter that become smaller from the +Y direction side to the -Y direction side between the coating crimping portion 40a and the conductor crimping portion 40c. The conductor crimping portion 40c is formed on the -Y direction side of the first inclined portion 40b, continuing from the first inclined portion 40b, and is a portion that is crimped and connected to the conductor exposed portion 212. The inner surface of the conductor crimping portion 40c may have a plurality of annular grooves aligned along the XZ plane and arranged in the Y axis direction. By providing a plurality of grooves on the inner surface of the conductor crimping portion 40c, the grooves bite into the conductor 2a when the conductor crimping portion 40c is crimped to the conductor 2a of the conductor exposed portion 212, so that the conductor 2a is less likely to come off the crimp terminal 1A, and the conductivity between the conductor crimping portion 40c and the conductor 2a is improved. The second inclined portion 40d is continuous with the conductor crimping portion 40c, and as shown in FIG. 4, the height in the Z-axis direction of the space 401 decreases from the +Y direction side toward the -Y direction side.

[0022] Sealing portion 40e is a portion that is connected to second inclined portion 40d and is formed by crushing barrel pieces 41A and 41B on the -Y direction side of second inclined portion 40d, and closes the -Y direction side of crimping portion 40.

[0023] Crimping portion 40 is formed by pressing barrel piece 41A and barrel piece 41B to butt ends of barrel piece 41A and barrel piece 41B together and welding the butted portion. Note that the presence of sealing portion 40e is optional, and in crimping portion 40, for example, the -Y direction side of conductor crimping portion 40c may be open rather than closed.

[0024] The fixed portion 30 is a portion connected to the crimping portion 40 on the -Y direction side. The fixed portion 30 engages with a connector housing into which the crimp terminal 1A is inserted and is fixed to the connector housing. The fixed portion 30 has a substantially rectangular cross section along the XZ plane formed by bending the pieces 31A and 31B and butting the ends of the pieces 31A and 31B together. As shown in Figs. 5 and 7, the tip of the piece 31A has a convex portion 32A, and the tip of the piece 31B has a convex portion 32B.

[0025] The connecting portion 20 is formed between the contact portion 10 and the fixed portion 30, and is a portion that connects the fixed portion 30 and the contact portion 10. The connecting portion 20 has side walls 22A and 22B that are bent toward the +Z direction side from the bottom portion 21. As shown in FIG. 2, the bottom surface of the bottom portion 21 is higher on the -Y direction side and becomes lower toward the +Y direction side.

[0026] The contact portion 10 is a portion connected to the -Y direction side of the connecting portion 20. The contact portion 10 is inserted into a female terminal and electrically connected to the female terminal. The contact portion 10 has a plate-shaped base 11 and contact pieces 11A and 11B overlapping the base 11. The contact piece 11A has a notch 12A formed at an end on the +Y direction side, and the width in the X-axis direction narrows toward the +Y direction side. The contact piece 11B has a notch 12B formed at an end on the +Y direction side, and the width in the X-axis direction narrows toward the +Y direction side. It is preferable that the depth of the notches 12A and 12B in the Y-axis direction does not reach the tongue of the female terminal when the contact portion 10 is inserted into the female terminal. The contact portion 10 is formed by pressing the blank 1 in the state shown in Fig. 7, and bending the contact pieces 11A and 11B so that the contact pieces 11A and 11B overlap the base portion 11 and the end of the contact piece 11A in the X-axis direction faces the end of the contact piece 11B in the X-axis direction as shown in Fig. 6(a). The ends of the bent contact pieces 11A and 11B may contact each other, or there may be a small gap therebetween as shown in Fig. 6 as long as it does not affect the connection performance with the female terminal. As shown in Fig. 6(b), at the boundary between the contact portion 10 and the connecting portion 20 after the press working, the contact pieces 11A and 11B are bent and overlap the base portion 11. At the boundary between contact portion 10 and connecting portion 20, contact pieces 11A and 11B are bent and overlapped with base portion 11, so that the thickness in the Z-axis direction of the boundary between contact portion 10 and connecting portion 20 is increased, thereby suppressing bending of contact portion 10 in the Z-axis direction. Note that the width in the X-axis direction of contact pieces 11A and 11B at the boundary between contact portion 10 and connecting portion 20 is preferably equal to or greater than the plate thickness of base portion 11.

[0027] Next, a method for manufacturing the crimp terminal 1A according to this embodiment will be described. FIG. 8 is a diagram showing an example of a manufacturing apparatus for manufacturing the crimp terminal 1A. The manufacturing apparatus 1000 includes a supply roller 1001 for supplying the copper strip 3, a press machine 1002, a laser welder 1003, an inspection machine 1004, and a winding roller 1005. FIG. 8 shows an example in which the laser welder 1003 and the inspection machine 1004 are configured separately as separate devices, but it is also possible to incorporate the function of the inspection machine 1004 into the laser welder 1003. In addition, an inspection machine for inspecting the finish of the press processing may be added between the press machine 1002 and the laser welder 1003, and the function of this inspection machine may be incorporated into the press machine 1002.

[0028] The copper strip 3 is a metal plate material before processing, for example, a copper alloy strip such as brass having a tin-plated (Sn-plated) surface. The crimp terminal 1A is manufactured through a pressing process in which a press machine 1002 presses the copper strip 3 supplied from a supply roller 1001, a welding process in which a laser welder 1003 laser-welds the chain terminal formed by the pressing, and a process in which an inspection machine 1004 inspects the laser-welded portion.

[0029] The supply roller 1001 delivers the rolled copper strip 3 to the press machine 1002. The supply roller 1001 rotates at a constant pitch corresponding to the spacing of the blank 1 before bending as shown in FIG. 7 formed by the press machine 1002 and in accordance with the timing of the press process in the press machine 1002 to deliver the copper strip 3 intermittently.

[0030] The press machine 1002 performs press forming such as punching and bending on the copper strip 3 fed from the supply roller 1001 while intermittently conveying it toward the laser welding machine 1003, thereby forming and bending the blank 1. Specifically, the press machine 1002 performs punching on the copper strip 3 fed from the supply roller 1001 as a primary press, thereby forming a plurality of blanks 1 shown in FIG. 7 and band-shaped carriers 4A and 4B for conveying the blanks 1. The blanks 1 correspond to the shape of the crimp terminal 1A developed on the XY plane. The carrier 4A is formed on the +Y direction side of the blank 1 and is continuous with the blank 1, and the carrier 4B is formed on the -Y direction side of the blank 1 and is continuous with the blank 1. A plurality of feed holes H into which pins for positioning during conveyance are inserted are provided at a predetermined pitch in the carriers 4A and 4B.

[0031] Furthermore, the press machine 1002 performs bending a number of times as a secondary press to form the chained terminal T formed into the shape shown in Fig. 1. This secondary press will be described with reference to Figs. 9 to 14. Figs. 9 to 14 are views showing the progress of deformation of the blank 1 in the secondary press, and are views of the vicinity of the connecting portion 20 as viewed from the +Z direction side. In Figs. 9 to 14, the larger the figure number, the later the process.

[0032] In the secondary press, the contact pieces 11A and 11B are sequentially bent as shown in Figs. 9 to 14, and the contact pieces 11A and 11B are folded over the base 11. In the secondary press, the pieces 31A and 31B are sequentially processed as shown in Figs. 9 to 14, and the pieces 31A and 31B are deformed until they assume the shape shown in Fig. 1. In the secondary press, the pieces 31 and 31B have convex portions 32A and 32B intersecting as shown in Fig. 5 when viewed in the Y-axis direction during the secondary press. By having the convex portions 32A and 32B intersecting as viewed in the Y-axis direction during the secondary press, deformation of the pieces 31A and 31B due to a force acting in the Y-axis direction during the press is suppressed, and the rectangular cross-sectional shape of the fixed part 30 is maintained. Furthermore, even if piece 31A or piece 31B attempts to deform inward, the tip of convex portion 32A contacts the end of piece 31B, and the tip of convex portion 32B contacts the end of piece 31A, thereby preventing piece 31A or piece 31B from collapsing inward due to an external force from the side wall direction of fixed portion 30.

[0033] In the process of the secondary press, the end of the contact piece 11A and the contact piece 11B on the +Y direction side may be used to press and crush the portion within the dashed circle, as shown in Fig. 12 and Fig. 13, to expand the width in the X-axis direction of the portion within the dashed circle. At this time, it is preferable to crush the portion of the blank 1 that rises in the +Z direction from the contact pieces 11A and 11B to the side walls 22A and 22B, since the plate thickness after crushing can be increased. In this case, the press cut surface appears on the upper surface of the crushed portion. By carrying out this process, the thickness in the Z-axis direction near the boundary between the contact part 10 and the connecting part 20 becomes thicker, so that bending of the contact part 10 in the Z-axis direction is suppressed. In addition, in the process of the secondary press, since notch 12A is provided in contact piece 11A and notch 12B is provided in contact piece 11B, the tensile force acting on the portion to be bent for folding at the end on the +Y direction side of contact pieces 11A and 11B is alleviated, and cracking of contact pieces 11A and 11B is suppressed. Regarding crimping portion 40, press machine 1002 forms barrel piece 41A and barrel piece 41B into a cylindrical shape, and then presses the -Y direction side in the -Z direction to form second inclined portion 40d and sealing portion 40e.

[0034] After the blank 1 is formed into the shape shown in Fig. 1, the carrier 4B is cut off from the contact portion 10, and the chained terminal T having the shape shown in Fig. 1 is connected to the carrier 4A as shown in Fig. 15. In the state shown in Fig. 15, the ends of the barrel piece 41A and the barrel piece 41B are butted against each other. In the chained terminal T, the end of the piece 31A and the end of the piece 31B cross each other, and the contact piece 11A and the contact piece 11B are folded over the base 11.

[0035] 15, i.e., the portion where the ends of barrel piece 41A and barrel piece 41B of chained terminal T are butted against each other, and the surface on the +Z direction side of sealing portion 40e are joined by laser welding. This laser welding gives crimping portion 40 a sealed structure. Inspection machine 4 is a device that inspects the laser-welded chained terminal T. Specifically, the portion laser-welded by laser welding machine 1003 is photographed by a CCD camera or the like, and it is determined whether the amount of positional deviation in the X-axis direction of the welding position and the bead width are within the allowable range.

[0036] The winding roller 1005 is a mechanism for winding up the chained terminal T. Like the supply roller 1001, the winding roller 1005 also rotates at a constant pitch and in accordance with the timing of the press processing in the press machine 1002 to wind up the chained terminal T. The chained terminal T becomes the crimp terminal 1A when separated from the carrier 4A. Note that the transport speed may be adjusted by providing speed sensors between the press machine 1002 and the laser welding machine 1003 and between the inspection machine 1004 and the winding roller 1005, and by providing an accumulator in front of the winding roller 1005.

[0037] [Variations] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment and can be implemented in various other forms. For example, the above-mentioned embodiment may be modified as follows to implement the present invention. The above-mentioned embodiment and the following modifications may be combined with each other. The present invention also includes a configuration in which the components of the above-mentioned embodiments and modifications are appropriately combined. Further effects and modifications can be easily derived by a person skilled in the art. Therefore, the broader aspects of the present invention are not limited to the above-mentioned embodiment and modifications, and various modifications are possible.

[0038] In the present invention, an arc-shaped notch 12A is formed at the end on the +Y direction side of contact piece 11A connected to side wall 22A, and an arc-shaped notch 12B is formed at the end on the +Y direction side of contact piece 11B connected to side wall 22B, but the configuration of the ends on the +Y direction side of contact pieces 11A and 11B is not limited to the configuration of the embodiment. For example, the shape of the notch provided at the ends on the +Y direction side of contact pieces 11A and 11B may be trapezoidal like notches 12C and 12D of crimp terminal 1B shown in Fig. 17(a) or rectangular like notches 12E and 12F of crimp terminal 1C shown in Fig. 17(b). As long as the deepest part of the notches 12A and 12B on the -Y direction side does not reach the tongue of the female terminal, the R of the arc shape of the innermost part of the notches may be made smaller and the depth in the -Y direction side may be made deeper than that of the embodiment, as in the notches 12G and 12H of the crimp terminal 1D shown in Fig. 17(c). The contact pieces may be configured such that the contact pieces are not overlapped between the deepest position of the notch on the -Y direction side of the contact piece 11A and the deepest position of the notch on the -Y direction side of the contact piece 11B, as in the crimp terminal 1E shown in Fig. 17(d). As in the crimp terminal 1F shown in Fig. 17(e), the notches 12J and 12K may be formed so that the contact pieces between the deepest position of the notch on the -Y direction side of the contact piece 11A and the deepest position of the notch on the -Y direction side of the contact piece 11B have a mountain-shaped shape on the +Y direction side.

[0039] In the above embodiment, the crimp terminal 1A is of a closed barrel type, but may be of an open barrel type. In addition, in the crimp terminal 1A, the shape of the fixed portion 30 is not limited to a rectangular cross-sectional shape along the XZ plane, and may be any other shape that is suitable for a connector housing.

[0040] In this embodiment, the crimp terminal 1A and the conductor 2a of the covered electric wire 2 are joined by the crimping portion 40 to form an electric wire with terminal. A wire harness is formed by bundling a plurality of electric wires with terminals, each of which includes the crimp terminal 1A and the covered electric wire 2, and inserting the bundling into a connector. This wire harness is arranged, for example, in an automobile. FIG. 16 is a perspective view showing an example of a wire harness. The electric wire with terminal 5 shown in FIG. 16 is an electric wire with terminal 5 formed by crimping the crimp terminal 1A to the conductor 2a of the covered electric wire 2. A wire harness 7 is formed by inserting a plurality of electric wires with terminals 5 into a connector 6 as shown in FIG. 16. [Explanation of symbols]

[0041] 1 Blank 1A~1F Crimp terminal 2. Insulated wire 2a Conductor 2b Insulation coating 3 Copper strip 4A, 4B Carriers 5 Wire with terminals 6 Connectors 7 Wire Harness 10 Contact part 11A, 11B contact piece 12A~12H, 12J, 12K notch 20 Connection part 30 Fixed part 31A, 31B piece 40 Crimping section 40a Covered crimp part 40b 1st slope 40c Conductor crimp part 40d 2nd slope 40e Sealing part 41A, 41B Barrel Pieces 211 Wire 212 Exposed conductor 401 Space 1000 manufacturing equipment 1001 Supply roller 1002 Press machine 1003 Laser welding machine 1004 Inspection machine 1005 Winding roller H Sprocket hole T chain terminal

Claims

1. a contact portion provided so as to be able to come into contact with an external terminal; A crimping portion provided so as to be crimpable to the electric wire; a connecting portion connecting the contact portion and the crimping portion; A terminal comprising: The contact portion is formed by folding both ends of a plate material in a width direction toward the center, In the vicinity of the boundary between the connecting portion and the contact portion, the plate material rises from the contact portion to the connecting portion, and both ends in the width direction are pressed, so that after pressing, the width in the width direction on the connecting portion side is wider than the width in the width direction on the contact portion side, and the thickness of both ends in the width direction is thicker than the thickness of the contact portion, The folded portion of the contact portion has a width that narrows toward the end of the connecting portion. Terminal.

2. A plate member intersects between the connecting portion and the crimping portion to form a rectangular cross section, and a fixed portion for a housing is provided. The terminal of claim 1 , comprising:

3. The end of the folded portion of the contact portion on the side of the connecting portion has a notch in the shape of a circular arc, a trapezoid, or a rectangle. The terminal according to claim 1 or 2.

4. The folded portion of the contact portion has a central portion in a width direction at an end portion on the connecting portion side, the central portion being formed in a mountain shape toward the connecting portion. A terminal according to any one of claims 1 to 3.

5. A coated electric wire having a conductor and an insulating coating that coats the conductor; The terminal according to claim 1 , which is joined to the coated electric wire; A terminal-attached electric wire comprising:

6. A wire harness comprising the electric wire with terminal according to claim 5 and arranged in an automobile.

7. A method for manufacturing a terminal including a contact portion electrically connected to an external terminal, a crimping portion crimped to an electric wire, and a connecting portion connecting the contact portion and the crimping portion, The method includes a step of bending a metal plate material and folding both ends of the plate material in a width direction toward a center to form the contact portion, In the vicinity of the boundary between the connecting portion and the contact portion, the plate material rises from the contact portion to the connecting portion, and both ends in the width direction are pressed, so that after pressing, the width in the width direction on the connecting portion side is wider than the width in the width direction on the contact portion side, and the thickness of both ends in the width direction is thicker than the thickness of the contact portion, The folded portion of the contact portion has a width that narrows toward the end of the connecting portion. A method for manufacturing terminals.

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