Wiring harness

Abstract

To provide a wiring harness that can suppress vibration transmitted from an electric wire to a connector.SOLUTION: A wiring harness WH includes an electric wire W and a connector 1 provided at an end of the electric wire W. The electric wire W has a first portion W11 extending along a fitting direction Z of the connector 1, a second portion W12 intersecting the first portion W11, and a bent portion W13 connecting the first portion W11 and the second portion W12. The bent portion W13 has a first recess 5 formed in a concave shape in the insulating coating W2 at least in the bent inner portion W13a.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a wire harness. [Background technology]

[0002] As an example of a technique related to a conventional wire harness, Patent Document 1 discloses a wire harness including an electric wire including a linear conductor portion having electrical conductivity and an insulating coating having electrical insulation properties that covers the outside of the conductor portion, and a connector provided at an end of the electric wire. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-100103 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the wire harness described in the above-mentioned Patent Document 1 has room for further improvement in terms of, for example, suppression of vibration transmitted from the electric wires to the connector.

[0005] The present invention has been made in consideration of the above circumstances, and has an object to provide a wire harness that can suppress vibrations transmitted from electric wires to a connector. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the wire harness of the present invention comprises an electric wire including a linear conductor portion having electrical conductivity and an insulating coating having insulating properties covering the outside of the conductor portion, and a connector provided at an end of the electric wire, wherein the electric wire has a first portion extending along a mating direction of the connector, a second portion intersecting the first portion, and a bent portion connecting the first portion and the second portion, and the bent portion has a first recess formed in a concave shape in the insulating coating at least in the inner bend portion. Effect of the Invention

[0007] In the wire harness according to the present invention, the bent portion of the electric wire has a first recess formed in a concave shape in the insulating coating at least in the bent inner portion. With this configuration, for example, the first recess makes it easier for the bent portion of the wire harness to bend, and thus the reaction force of the electric wire can be reduced. As a result, the wire harness has an effect of suppressing vibrations transmitted from the electric wire to the connector. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an exemplary exploded perspective view of a connector applied to a wire harness according to an embodiment. [Diagram 2] FIG. 2 is an exemplary plan view of an electric wire applied to the wire harness according to the embodiment. [Diagram 3] FIG. 3 is an exemplary cross-sectional view of the wire of FIG. [Figure 4] FIG. 4 is an enlarged view of the vicinity of the bent portion of the electric wire in FIG. [Diagram 5] FIG. 5 is an exemplary perspective view of an electric wire applied to the wire harness according to the embodiment. [Figure 6] FIG. 6 is an exemplary plan view of the vicinity of a bent portion of an electric wire applied to the wire harness according to the first modified example. [Figure 7] FIG. 7 is an exemplary cross-sectional view of the wire of FIG. [Figure 8]FIG. 8 is an exemplary plan view of an electric wire applied to the wire harness according to the second modification, illustrating a state before a bent portion is bent. [Figure 9] FIG. 9 is an exemplary cross-sectional view of the wire of FIG. [Figure 10] FIG. 10 is an exemplary plan view of the electric wires applied to the wire harness according to the second modified example, illustrating a state after the bent portion is bent. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments and modifications of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the following embodiments and modifications. In addition, the components in the following embodiments and modifications include those that are replaceable and easy for a person skilled in the art, or those that are substantially the same.

[0010] In addition, the embodiments and modifications disclosed below include similar components. Therefore, in the following, the similar components are given the same reference numerals, and duplicated explanations are omitted. Note that in this specification, ordinal numbers are used only to distinguish parts, members, parts, positions, directions, etc., and do not indicate order or priority.

[0011] [Embodiment] FIG. 1 is an exploded perspective view of a connector 1 applied to a wire harness WH according to an embodiment. The connector 1 of this embodiment shown in FIG. 1 is incorporated into a wire harness WH arranged in a vehicle such as an automobile. Here, the wire harness WH is, for example, a collective component in which a plurality of electric wires W used for power supply and signal communication are bundled together to connect each device mounted on a vehicle, and the plurality of electric wires W are connected to each device by a connector 1 or the like. The wire harness WH of this embodiment includes, for example, a plurality of conductive electric wires W and a connector 1 provided at the terminals of the plurality of electric wires W. In addition, the wire harness WH may be configured to further include a protector, a fixing device, and the like.

[0012] In the following description, among the first, second, and third directions that intersect with each other, the first direction is referred to as the "axial direction X", the second direction is referred to as the "width direction Y", and the third direction is referred to as the "fitting direction Z". Here, the axial direction X, the width direction Y, and the fitting direction Z are approximately perpendicular to each other. The fitting direction Z typically corresponds to the extending direction of a first portion W11 (see FIG. 2) of the electric wire W described later, the fitting direction of the connector 1, the front-rear direction (thickness direction) of the connector 1, and the like. The axial direction X typically corresponds to the extending direction of a second portion W12 of the electric wire W described later, the drawing direction of the electric wire W relative to the connector 1, the longitudinal direction (up-down direction) of the connector 1, and the like. The width direction Y typically corresponds to the radial direction of the electric wire W, the width direction (left-right direction) of the connector 1, and the like. In addition, each direction used in the following description will be described as a direction in a state in which the electric wire W is assembled to the connector 1, unless otherwise specified.

[0013] 1, the connector 1 includes a casing 2 formed by combining a plurality of parts including, for example, a housing 10 and a shield shell 20, a wire packing 30, and a rear holder 40. The connector 1 is used in, for example, a wire harness WH having an electric wire W for supplying power from an inverter to a motor in a vehicle such as a hybrid vehicle or an electric vehicle. The connector 1 holds a terminal 3 provided at an end of the electric wire W, and can electrically connect the electric wire W to the mating connector via the terminal 3 by mating with a mating connector (not shown).

[0014] The housing 10 is a portion of the casing 2 that holds the terminals 3 therein and is fitted with a mating connector. The housing 10 is formed by combining a plurality of parts. Specifically, the housing 10 includes, for example, a housing main body 11, an inner housing 12, a front holder 13, and a rear cover 14. The housing main body 11, the inner housing 12, the front holder 13, and the rear cover 14 are each formed from an insulating resin material.

[0015] The housing main body 11 is provided with a cylindrical portion that protrudes cylindrically toward one side in the fitting direction Z (the mating connector side) and holds the terminal 3 therein. In this embodiment, the cylindrical portion is provided with two terminals 3 spaced from each other in the width direction Y. The cylindrical portion is formed, for example, with openings on both sides in the fitting direction Z. When the terminal 3 is attached to the cylindrical portion, the terminal 3 is exposed to the outside from the opening on one side in the fitting direction Z, while the opening on the other side in the fitting direction Z is closed by the rear cover 14. The housing main body 11 is formed, for example, in a substantially rectangular shape when viewed from the fitting direction Z.

[0016] The rear cover 14 is a member for closing the opening of the cylindrical portion in the housing main body 11 from the other side in the fitting direction Z. The rear cover 14 is configured to include, for example, a cover main body that covers the opening of the housing main body 11, and a plurality of locking portions that are locked to the outer circumferential surface of the housing main body 11. With the cover main body covering the opening of the housing main body 11, the rear cover 14 is integrated with the housing main body 11 by so-called snap fit using the locking portions. In addition, a packing 17 is provided between the rear cover 14 and the housing main body 11 to prevent foreign matter such as moisture from entering the inside through an annular gap between the rear cover 14 and the housing main body 11.

[0017] The inner housing 12 is a member formed separately from the housing body 11, and is a member that receives and holds the terminals 3 along the fitting direction Z when attached to the inside of the cylindrical portion of the housing body 11. The inner housing 12 is provided with a plurality of insertion holes through which the terminals 3 are inserted along the fitting direction Z. The plurality of insertion holes are aligned in the width direction Y. In other words, the plurality of terminals 3 are held in a state where they are partitioned from one another in the width direction Y by the inner housing 12.

[0018] The front holder 13 is, for example, a member for holding the packings 15, 16 between the front holder 13 and the housing main body 11. The front holder 13 is formed in a cylindrical shape that conforms to the outer peripheral surface of the cylindrical portion of the housing main body 11, and is fitted to the outer peripheral surface of the cylindrical portion. The front holder 13 is formed in a substantially rectangular cylindrical shape, for example, when viewed from the fitting direction Z. The front holder 13 is integrated with the cylindrical portion by claw fitting or the like, with the packings 15, 16 sandwiched between the front holder 13 and the housing main body 11.

[0019] The packings 15 and 16 are intended to prevent foreign matter such as moisture from entering the inside of the connector 1 through an annular gap between the cylindrical portion of the housing main body 11 and the mating connector. The packings 15 and 16 are made of an elastically deformable material such as rubber or resin. The packings 15 and 16 are formed, for example, in a substantially rectangular cylindrical shape along the outer circumferential surface of the cylindrical portion of the housing main body 11, and are fitted to the outer circumferential surface of the cylindrical portion. The packings 15 and 16 are interposed between the housing main body 11 and the mating connector on the other side of the fitting direction Z of the front holder 13 in a fitted state in which the housing main body 11 is fitted to the mating connector.

[0020] The shield shell 20 is a part of the casing 2 that covers the terminals 3 and the electric wires W to prevent noise generated from the electric wires W from leaking outside the connector 1. As shown in Fig. 1, the shield shell 20 is formed by combining a plurality of parts. Specifically, the shield shell 20 includes, for example, an upper shell 21, a lower shell 22, and a shield ring 23. The upper shell 21, the lower shell 22, and the shield ring 23 are each formed, for example, from a metallic material having electrical conductivity.

[0021] The upper shell 21 is a portion of the shield shell 20 that covers the other side of the housing 10 in the fitting direction Z (the side opposite to the mating connector). The upper shell 21 is provided with an accommodation space that is open toward one side in the fitting direction Z and accommodates the rear cover 14 of the housing 10 and a part of the housing main body 11. The upper shell 21 also has a through hole through which a fastening member 50 that fastens the housing main body 11 and the shield shell 20 is inserted along the fitting direction Z.

[0022] The lower shell 22 is a portion of the shield shell 20 that covers the periphery of the wire packing 30, the rear holder 40, the electric wires W, etc. The lower shell 22 is positioned on the other side (lower side) of the upper shell 21 in the axial direction X. The lower shell 22 is fixed to the upper shell 21 by a fastening member 50, for example, in a state in which the wire packing 30, the rear holder 40, the electric wires W, etc. are housed inside. The shield ring 23 is crimped to the braid of the electric wires W, for example.

[0023] The wire packing 30 has, for example, an electric wire insertion hole 31 through which the electric wire W is inserted along the axial direction X, and seals the periphery of the electric wire W. In this embodiment, the wire packing 30 has two electric wire insertion holes 31 spaced apart from each other in the width direction Y. The wire packing 30 is formed of an elastically deformable member such as rubber. The wire packing 30 is also called a seal member, a rubber plug, a bush, or the like.

[0024] The rear holder 40 is a member that is positioned, for example, on one side (upper side, housing main body 11 side) of the wire packing 30 in the axial direction X and holds the wire packing 30 and the electric wire W. The rear holder 40 is formed, for example, from a synthetic resin material or the like. A lattice-shaped bead is provided on the outer circumferential surface of the rear holder 40 to ensure rigidity and strength. In this embodiment, the connector 1 is provided with a pair of rear holders 40 spaced apart from each other in the axial direction X.

[0025] Each of the pair of rear holders 40 is composed of two divided bodies that can be separated from each other along the fitting direction Z. Each divided body of the rear holder 40 is provided with a semicircular electric wire insertion hole into which the electric wire W is inserted along the axial direction X. In this embodiment, each of the rear holders 40 is provided with two electric wire insertion holes spaced apart from each other in the width direction Y. The two electric wire insertion holes are positioned next to the electric wire insertion hole 31 of the wire packing 30 in the axial direction X.

[0026] FIG. 2 is a plan view of an electric wire W applied to a wire harness WH, and FIG. 3 is a cross-sectional view of the electric wire W in FIG. 2. As shown in FIGS. 2 and 3, the electric wire W includes, for example, a linear conductor portion W1 having electrical conductivity and an insulating coating W2 having electrical insulation and covering the outside of the conductor portion W1. The electric wire W is an insulated electric wire in which the conductor portion W1 is covered with the insulating coating W2. Note that the conductor portion W1 in this embodiment is a core wire in which a plurality of conductive metal wires are bundled together, but may be a twisted core wire in which the plurality of metal wires are twisted together. The insulating coating W2 is an electric wire coating that covers the outer periphery of the conductor portion W1. The insulating coating W2 is formed, for example, by extrusion molding an insulating resin material (such as PP, PVC, or cross-linked PE. The material is appropriately selected in consideration of abrasion resistance, chemical resistance, heat resistance, and the like).

[0027] The electric wires W are each formed to extend linearly along the axial direction X and to extend with approximately the same diameter in the axial direction X (extension direction). In addition, the electric wires W are formed, for example, such that the cross-sectional shape of the conductor portion W1 (cross-sectional shape intersecting with the axial direction X) is approximately circular and the cross-sectional shape of the insulating coating W2 is approximately annular, so that the electric wires W are formed to have an approximately circular cross-sectional shape as a whole. At least one end of the electric wires W has the insulating coating W2 stripped off, and the above-mentioned terminal 3 (see FIG. 10) is crimped to the exposed portion W1a of the conductor portion W1 exposed from the insulating coating W2.

[0028] The terminal 3 is a terminal fitting made of a conductive metal material and is electrically connected to a terminal of a mating connector (not shown). The terminal 3 includes, for example, an electrical connection portion 3a electrically connected to the terminal of the mating connector, and an electric wire crimping portion 3b electrically connected to an end of the electric wire W (exposed portion W1a of the conductor portion W1). The electric wire crimping portion 3b has, for example, a pair of barrel pieces 3b1 crimped to the exposed portion W1a of the conductor portion W1, and is electrically connected to the electric wire W by crimping the pair of barrel pieces 3b1 and the exposed portion W1a. The terminal 3 is also referred to as a crimp terminal or the like.

[0029] Here, in this embodiment, the electric wire W includes a first portion W11, a second portion W12, and a bent portion W13. The first portion W11 is a portion of the electric wire W that extends along the fitting direction Z of the connector 1. In this embodiment, the exposed portion W1a of the conductor portion W1 described above is provided at an end portion on one side of the fitting direction Z of the first portion W11 (opposite to the bent portion W13). The second portion W12 is a main portion of the electric wire W that extends along the axial direction X that intersects with the first portion W11. In this embodiment, the second portion W12 is held by the rear holder 40 described above. The bent portion W13 is a portion of the electric wire W that connects the first portion W11 and the second portion W12. In this embodiment, the bent portion W13 is bent at an angle of approximately 90° so as to connect the first portion W11 and the second portion W12.

[0030] Fig. 4 is an enlarged view of the vicinity of the bent portion W13 in the electric wire W in Fig. 3, and Fig. 5 is a perspective view of the electric wire W. As shown in Figs. 4 and 5, in the present embodiment, the bent portion W13 is provided with a first concave recess 5 in the insulating coating W2 at least in the bent inner portion W13a. The first recess 5 is recessed from the outer surface of the insulating coating W2 toward the radially inward direction of the electric wire W and is open toward the radially outward direction of the electric wire W.

[0031] In this embodiment, the first recess 5 is formed in a groove shape having a depth t2 that is equal to or less than 1 / 2 the coating thickness t1 of the insulating coating W2. In other words, the first recess 5 is formed so as not to penetrate the insulating coating W2. The first recess 5 is formed in a quadrangle shape having a width smaller than the diameter of the electric wire W when viewed from the front (see FIG. 5). That is, the first recess 5 is partially provided in the bent inner portion W13a of the electric wire W, and is formed in a slit groove shape that does not penetrate the insulating coating W2.

[0032] In the present embodiment, the second portion W12 has a concave second recess 6 in the insulating coating W2 of the second portion W12. The second recess 6 is recessed from the outer surface of the insulating coating W2 toward the inside in the radial direction of the electric wire W and opens toward the outside in the radial direction of the electric wire W. Like the first recess 5, the second recess 6 is formed in a groove shape having a depth t2 that is ½ or less of the coating thickness t1 of the insulating coating W2. In the present embodiment, for example, the depth t2 of the second recess 6 is approximately the same as the depth t2 of the first recess 5.

[0033] Also, the second recess 6 is provided, for example, over the entire circumference of the outer circumferential surface of the electric wire W. That is, the second recess 6 is provided in an annular (ring-shaped) shape in the second portion W12 of the electric wire W, and is formed in a slit groove shape that does not penetrate the insulating coating W2. In this embodiment, the second portion W12 is provided with a plurality of second recesses 6 spaced apart from one another in the axial direction X. Note that, for convenience, the second recesses 6 are omitted from FIG. 1.

[0034] When the electric wire W of this embodiment is bent by applying an external force from a natural state (approximately straight state) to which no external force is applied, the bent portion elastically deforms and generates an elastic reaction force in the bent portion W13, which causes the electric wire W to return to its original state. In this embodiment, the first recess 5 is provided at least on the bent inner side portion W13a of the bent portion W13, so that the reaction force of the electric wire W can be reduced by the first recess 5.

[0035] If the electric wire W were not provided with the above-mentioned first recess 5, the reaction force of the bent portion W13 of the electric wire W would increase, making it easier for vibration to be transmitted from the electric wire W to the connector 1, which would result in unstable contact between the terminal 3 of the connector 1 and the terminal of the mating connector, which could lead to wear. In this regard, according to the present embodiment, since the electric wire W is provided with the above-mentioned first recess 5, the reaction force of the bent portion W13 of the electric wire W can be reduced by the first recess 5, and the occurrence of the above-mentioned inconvenience can be suppressed.

[0036] As described above, in the wire harness WH of the present embodiment, the electric wire W has the first portion W11 extending along the fitting direction Z of the connector 1, the second portion W12 intersecting with the first portion W11, and the bent portion W13 connecting the first portion W11 and the second portion W12, and the bent portion W13 has the first recess 5 formed in a concave shape in the insulating coating W2 at least in the bent inner portion W13a. With this configuration, for example, the first recess 5 makes it easier for the bent portion W13 of the wire harness WH to bend, and thus the reaction force of the electric wire W can be reduced. As a result, the wire harness WH can suppress vibration transmitted from the electric wire W to the connector 1, and thus can suppress wear between the terminal 3 of the connector 1 and the terminal of the mating connector caused by the transmission of the vibration.

[0037] In the wire harness WH of the present embodiment, the first recess 5 is formed in a groove shape having a depth t2 that is equal to or less than ½ of the coating thickness t1 of the insulating coating W2. With this configuration, the wire harness WH can obtain a configuration that can relatively easily reduce the reaction force of the electric wires W by the groove-shaped first recess 5, for example.

[0038] In the wire harness WH of the present embodiment, the second portion W12 has a second recess 6 formed in a concave shape in the insulating coating W2 of the second portion W12. With this configuration, the wire harness WH can further reduce the reaction force of the electric wire W by the second recess 6 provided in the second portion W12, for example, and can further suppress the vibration transmitted from the electric wire W to the connector 1.

[0039] In the present embodiment, the electric wire W is provided with the first recess 5 and the second recess 6, but the present invention is not limited to this example, and for example, the electric wire W may be provided with only the first recess 5 without providing the second recess 6. In addition, in the present embodiment, the casing 2 is formed by combining a plurality of parts including the housing 10 and the shield shell 20, but the present invention is not limited to this example, and for example, the casing 2 may be formed by a single part.

[0040] [First Modification] Fig. 6 is a plan view of the vicinity of a bent portion W13 of an electric wire W applied to a wire harness WH1 according to a first modified example, and Fig. 7 is a cross-sectional view of Fig. 6. The wire harness WH1 shown in Figs. 6 and 7 has a similar configuration to the wire harness WH of the above embodiment. Therefore, the wire harness WH can obtain the same actions and effects as the above embodiment based on the similar configuration.

[0041] 6 and 7, this modification is different from the above embodiment in that the first recess 5 is provided around the entire circumference of the bent portion W13. That is, the first recess 5 is provided in an annular (ring-shaped) shape at the bent portion W13 of the electric wire W, and is formed in the shape of a slit groove that does not penetrate the insulating coating W2.

[0042] In this modification, the bent portion W13 is provided with a plurality of first recesses 5 spaced apart from one another in the bending direction of the electric wire W. The number of first recesses 5 is not limited to two, and may be, for example, one or three or more first recesses 5. In the first recess 5, in a set state in which the bent portion W13 is bent, the groove width at the bent outer portion 13b is wider than the groove width at the bent inner portion 13a.

[0043] In this manner, in the wire harness WH1 of the present modified example, the first recess 5 is provided over the entire circumference of the bent portion W13. With this configuration, the wire harness WH1 can more effectively reduce the reaction force of the electric wire W because the bent portion W13 of the electric wire W is made easier to bend by being formed into a shape by the annular first recess 5, and thus the vibration transmitted from the electric wire W to the connector 1 can be further suppressed.

[0044] In this modified example, a case has been illustrated in which only the first recess 5 is provided in the electric wire W, but this is not limited to this example. For example, a second recess 6 similar to that in the above embodiment may be further provided in the second portion W12 of the electric wire W.

[0045] [Second modified example] Fig. 8 is a plan view of the electric wire W applied to the wire harness WH2 according to the second modified example, showing a state before the bent portion W13 is bent, and Fig. 9 is a cross-sectional view of Fig. 8. The wire harness WH2 shown in Figs. 8 and 9 has a similar configuration to the wire harness WH of the above embodiment. Therefore, the wire harness WH2 can obtain the same action and effect as the above embodiment based on the similar configuration.

[0046] However, this modification is different from the above embodiment in that the first recess 5 is formed in a drawn shape that reduces in diameter toward the inside in the radial direction of the insulating coating W2, as shown in Figures 8 and 9. That is, the first recess 5 is provided in an annular (ring-shaped) shape at the bent portion W13 of the electric wire W, and is formed in a concave (hollow) shape that does not penetrate the insulating coating W2. The first recess 5 is formed, for example, by performing a drawing process on the outer circumferential surface of the electric wire W.

[0047] Fig. 10 is a plan view of the electric wire W applied to the wire harness WH2 according to the second modification, showing a state after the bent portion W13 is bent. As shown in Fig. 10, in this modification, the electric wire W is bent from the bent portion W13 in a state in which the first recess 5 is provided at the bent portion W13. In the first recess 5, in a set state in which the bent portion W13 is bent, the recess width at the bent outer portion 13b is wider than the recess width at the bent inner portion 13a.

[0048] In this manner, in the wire harness WH2 of the present modification, the first recess 5 is formed in a drawn shape that reduces in diameter toward the inside in the radial direction of the insulating coating W2. With this configuration, the wire harness WH2 can more effectively reduce the reaction force of the electric wire W because, for example, the drawn first recess 5 forms a curve at the bent portion W13 of the electric wire W, making it easier to bend, and thus can further suppress the vibration transmitted from the electric wire W to the connector 1.

[0049] In the modified example, the case where only the first recess 5 is provided in the electric wire W has been exemplified, but the present invention is not limited to this example, and for example, the second recess 6 similar to that of the above embodiment may be further provided in the second portion W12 of the electric wire W. In the connector 1, vibration is transmitted from an electric wire fixing portion such as the rear holder 40 to the terminal 3 of the connector 1 via the electric wire W, and the vibration transmitted to the terminal 3 is attenuated by the first recess 5 provided at an intermediate position of the vibration transmission path.

[0050] Although the embodiment and the modified examples of the present invention have been illustrated above, the above-mentioned embodiment and the modified examples are merely examples and are not intended to limit the scope of the invention. The above-mentioned embodiment and the modified examples can be implemented in various other forms, and various omissions, substitutions, combinations, and modifications can be made without departing from the gist of the invention. In addition, the specifications of each configuration, shape, and the like (structure, type, direction, type, size, length, width, thickness, height, number, arrangement, position, material, etc.) can be appropriately changed and implemented. [Explanation of symbols]

[0051] 1 Connector 5 First recess 6 Second recess t1 Covering thickness t2 Depth W electric wire W1 Conductor W2 Insulation coating W11 Part 1 W12 2nd part W13 Bent part W13a Inner bend WH, WH1, WH2 Wire harness Z mating direction

Claims

1. An electric wire including a linear conductor portion having electrical conductivity and an insulating coating having electrical insulation properties covering the outside of the conductor portion; A connector provided at an end of the electric wire, the electric wire has a first portion extending along a fitting direction of the connector, a second portion intersecting the first portion, and a bent portion connecting the first portion and the second portion, The bent portion has a first recess formed in a concave shape in the insulating coating at least in the bent inner portion. Wire harness.

2. The first recess is formed in a groove shape having a depth equal to or less than half the thickness of the insulating coating. The wire harness according to claim 1 .

3. The first recess is provided around the entire circumference of the bent portion. The wire harness according to claim 1 or 2.

4. The first recess is formed in a tapered shape that reduces in diameter toward a radially inward direction of the insulating coating. The wire harness according to claim 1 .

5. The second portion has a second recess formed in a concave shape in the insulating coating of the second portion. The wire harness according to claim 1 or 2.

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