Wire harness

Abstract

To provide a simple structure that is suitable for regulating a route of a wire harness in an environment exposed to oil.SOLUTION: A wire harness 20 includes: a wire bundle 34 including a plurality of wires 30; and a binding member 50 including a band part 51 that is wound around the wire bundle in a state of being in direct contact with an outer circumference of the wire bundle and a band holding part 54 that holds the band part in a state of being wound around the wire bundle. The band part includes a band body portion 52 that is wound around the wire bundle and is held by the band holding part, and an intervening portion 53 that intervenes in at least a portion between the band body portion and the wire bundle and is in direct contact with the outer circumference of the wire bundle. A Young's modulus of the intervening portion is smaller than a Young's modulus of the band body portion. A static friction coefficient between the intervening portion and the wire bundle is greater than a static friction coefficient between the band body portion and the outer circumference of the wire bundle.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] Patent Document 1 discloses a technique for fixing a bundle of electric wires to a flat wiring material with adhesive tape. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-206311 Summary of the Invention [Problem to be solved by the invention]

[0004] Wire harnesses are sometimes used in environments where they are exposed to oil. In such cases, fixing members with adhesive layers, such as adhesive tape, have the risk of components contained in the fixing member dissolving in the oil. For this reason, fixing members such as adhesive tape cannot be used in environments where they are exposed to oil. There is a demand for a simple structure that can appropriately regulate the routing of wire harnesses even in environments where they are exposed to oil.

[0005] Therefore, an object of the present disclosure is to provide a simple structure suitable for regulating the path of a wire harness in an environment exposed to oil. [Means for solving the problem]

[0006] A wire harness according to the present disclosure includes: a wire bundle including a plurality of electric wires; and a binding member including: a band portion wound around the wire bundle in a state of being in direct contact with an outer periphery of the wire bundle; and a band holding portion that holds the band portion in a state of being wound around the wire bundle, wherein the binding member is a portion of the wire bundle that is placed in an environment exposed to oil and is provided at a branch portion where some of the plurality of electric wires branch off from other some of the electric wires; the band portion includes: a band main portion wound around the wire bundle and held by the band holding portion; and an intervening portion that is interposed at least partially between the band main portion and the wire bundle and in direct contact with the outer periphery of the wire bundle, wherein a Young's modulus of the intervening portion is smaller than a Young's modulus of the band main portion; and a static friction coefficient between the intervening portion and the outer periphery of the wire bundle is larger than a static friction coefficient between the band main portion and the outer periphery of the wire bundle. [Effects of the Invention]

[0007] According to the present disclosure, the route of the wire harness can be easily regulated in an environment where the wire harness is exposed to oil. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic front view showing a wire harness according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Figure 5] FIG. 5 is a diagram showing how the binding member is bound. [Figure 6] FIG. 6 is an explanatory diagram showing how the force required to displace the binding member is tested. [Figure 7] FIG. 7 shows the test results of the binding member and the comparative binding member. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described.

[0010] The wire harness of the present disclosure is as follows.

[0011] (1) A wire harness comprising: a wire bundle including a plurality of electric wires; a binding member including: a band portion wound around the wire bundle in a state of being in direct contact with an outer periphery of the wire bundle; and a band holding portion that holds the band portion in a state of being wound around the wire bundle; wherein the binding member is a portion of the wire bundle that is placed in an environment exposed to oil and is provided at a branch portion where some of the plurality of electric wires branch off from other electric wires; the band portion includes: a band main portion wound around the wire bundle and held by the band holding portion; and an intervening portion that is interposed at least partially between the band main portion and the wire bundle and in direct contact with the outer periphery of the wire bundle; and wherein the Young's modulus of the intervening portion is smaller than the Young's modulus of the band main portion; and the static friction coefficient between the intervening portion and the outer periphery of the wire bundle is larger than the static friction coefficient between the band main portion and the outer periphery of the wire bundle.

[0012] In this wire harness, the band portion of the bundling member is provided with an interposition portion, which increases the static friction between the bundling member and the wire bundle, thereby preventing the bundling member from shifting relative to the wire bundle. In an environment exposed to oil, the bundling member can easily regulate the path of the wire harness.

[0013] (2) The wire harness of (1) may further include a band-attached fixing member including a band portion and a fixing portion that fixes the electric wire bundle to a target portion in a vehicle, the band-attached fixing member being provided at a portion of the electric wire bundle different from the portion where the binding member is provided, the binding member not having a portion corresponding to the fixing portion of the band-attached fixing member, the band portion of the band-attached fixing member not having a portion corresponding to the interposing portion of the band portion of the binding member, and the band portion of the band-attached fixing member may be formed of the same material as the band main body portion and may be wound around the outer periphery of the electric wire bundle in direct contact therewith. The binding member is not fixed to the vehicle, whereas the band-attached fixing member is fixed to the vehicle. Therefore, the likelihood of misalignment between the band-attached fixing member and the electric wire bundle is smaller than the likelihood of misalignment between the binding member and the electric wire bundle. Therefore, the interposing portion can be omitted from the band-attached fixing member, thereby simplifying the configuration.

[0014] (3) In the wire harness of (1) or (2), each of the plurality of electric wires may have a core wire and a covering covering the core wire, the covering having higher abrasion resistance than the intervening portion and constituting the outer periphery of the electric wire bundle. The electric wire bundle may come into contact with surrounding components due to vibration or the like in an environment in which it is mounted on a vehicle. Even in this case, the covering has higher abrasion resistance than the intervening portion, so the electric wires are less likely to be damaged when the electric wire bundle comes into contact with surrounding components, compared to when the material of the intervening portion is used as the covering. The intervening portion suppresses misalignment between the electric wire bundle and the bundling member, so the intervening portion is more likely to be kept in contact with the electric wire bundle at a constant position. Therefore, the intervening portion is less likely to rub against both the electric wire bundle and surrounding components, and problems are less likely to occur even if the intervening portion does not have the same abrasion resistance as the covering. Because the intervening portion does not have the same abrasion resistance as the covering, material selection and cost reduction for the intervening portion are easier.

[0015] (4) In the wire harness of any one of (1) to (3), the plurality of electric wires may be electric wires coated with fluororesin, silicone rubber, or electronically cross-linked polyethylene. If the plurality of electric wires are coated with fluororesin, silicone rubber, or electronically cross-linked polyethylene, the band portion is likely to slip. In such a case, the interposition portion can effectively prevent the band portion from shifting.

[0016] (5) In any one of the wire harnesses (1) to (4), the band portion may be held by the band holding portion in a state in which the intervening portion, together with the band main portion, is inserted into a through-hole in the band holding portion. The band portion is typically long so that it can accommodate objects of different thicknesses. When the objects to be bound are thin, an unnecessary portion is generated distal to the portion held by the band holding portion. This unnecessary portion is cut off as needed. Even in this case, the portion of the band portion with the intervening portion can be held by the band holding portion, so the intervening portion can be provided along the entire length of the band main portion before cutting. This widens the range of thicknesses of wire bundles that one type of bundling member can accommodate, suppresses the need for an increased number of bundling members, and facilitates management of bundling members.

[0017] (6) In the wire harness of any one of (1) to (5), in a test in which the bundling member is shifted in the longitudinal direction of the wire bundle while the wire bundle is fixed, a force required to move the bundling member may be larger than a force required to move the comparative bundling member when a test similar to the test is performed using a comparative bundling member that is not provided with the interposed portion. This more reliably obtains a wire harness in which the bundling member is less likely to shift relative to the wire bundle.

[0018] [Details of the embodiments of the present disclosure] Specific examples of the wire harness of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0019] [Embodiment 1] The wire harness according to the first embodiment will be described below. Fig. 1 is a schematic front view showing the wire harness 20 according to the first embodiment. In Fig. 1, a device 10 to which the wire harness 20 is to be assembled is indicated by a two-dot chain line. Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. Fig. 3 is a cross-sectional view taken along line III-III in Fig. 1. Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 1. Note that Figs. 2 and 3 show cross-sectional views of a portion where the band portion 51 is held by the band holding portion 54.

[0020] <Examples of equipment> An example of the device 10 will be described. The device 10 includes a case 12 and an electric component 16. Oil is sealed inside the case 12, and the space inside the case 12 is considered to be a space exposed to the oil. The space exposed to the oil is, for example, a space where oil may adhere to the wire harness 20. In other words, the space exposed to the oil may be a space where the oil splashes, a space where the oil is dispersed, or a space filled with oil. The electric component 16 is a component to which the wire harness 20 is connected, and is considered to be disposed inside the case 12. A relay connector 14 is assembled to the case 12. The relay connector 14 penetrates the inside and outside of the case 12. An inner connector 14a at one end of the relay connector 14 faces the inside of the case 12, and an outer connector 14b at the other end of the relay connector 14 faces the outside of the case 12.

[0021] One end of the wire harness 20 is connected to the inner connector 14a of the relay connector 14. The connector 18a at one end of the external wire harness 18 is connected to the outer connector 14b. The other end of the external wire harness 18 is connected to an external electrical component such as an ECU (electronic control unit). The external wire harness 18 connected to the external electrical component is electrically connected to the electrical component 16 inside the case 12 via the relay connector 14 and the wire harness 20.

[0022] As described above, the wire harness 20 is connected to the electric components 16 through the space inside the case 12. Therefore, the wire harness 20 is placed in an environment where it is exposed to oil.

[0023] A fixing target portion 13 is provided within the case 12 as a portion for fixing the wire harness 20. The fixing target portion 13 may be, for example, a bracket made of metal. The fixing target portion 13 may also be a plate-like portion used as a partition or the like within the case 12. The fixing target portion 13 is fixed to a certain position within the case 12 by, for example, pressing a portion of the case 12, or by screwing or welding to the case 12. In this embodiment, the fixing target portion 13 is located between the relay connector 14 and the electrical component 16.

[0024] The device 10 is assumed to be a device in a vehicle, for example, a device in which a mechanical mechanism and electrical components are integrated into a vehicle. The mechanical mechanism is, for example, a power transmission mechanism including gears. Oil is sealed in the case 12 for at least one of the purposes of ensuring smooth operation of the mechanical mechanism and cooling the mechanical mechanism. The oil sealed in the case 12 may be in an amount sufficient to adhere to the mechanical mechanism, or may be in an amount sufficient to occupy part or all of the space within the case 12. The electrical components include various sensors, various actuators, etc. An example of such device 10 is an automatic transmission device in a vehicle.

[0025] <Overall structure of the wire harness> The wire harness 20 includes an electric wire bundle 34 including a plurality of electric wires 30, a first connector 40, a plurality of second connectors 42, a bundling member 50, and a fixing member 60 with a band.

[0026] Each electric wire 30 is a coated electric wire including a core wire 31 and a coating 32. The core wire 31 is a conductive linear member made of copper, copper alloy, aluminum, aluminum alloy, or the like. The coating 32 is an insulating coating formed by extruding a resin around the core wire 31, for example. The plurality of electric wires 30 connects a first connector 40 and a second connector 42. A wire bundle 34 is formed by bundling together portions of the plurality of electric wires 30 that are arranged along the same path.

[0027] One end of the electric wire 30 is connected to the first connector 40. Here, one end of a plurality of electric wires 30 is connected to a common first connector 40. The first connector 40 is connected to the inner connector 14a of the relay connector 14. The other end of the electric wire 30 is connected to the second connector 42. Here, the other end of the plurality of electric wires 30 is connected to a plurality of second connectors 42 separately. Each second connector 42 is connected to a connector 16a on the electric component 16 side. Note that the plurality of connectors 16a may be provided on a single electric component 16, or may be provided separately on a plurality of electric components. Each of the first connector 40 and the second connector 42 includes a resin housing and a plurality of terminals. The resin housing is configured to hold the plurality of terminals in a predetermined arrangement. The terminals are connected to the core wires 31 at the ends of the electric wires 30 by crimping, insulation displacement, welding, or the like.

[0028] One ends of the plurality of electric wires 30 may be connected to a mating component without going through the first connector 40. Similarly, the other ends of the plurality of electric wires 30 may be connected to a mating component without going through the second connector 40. For example, a mating terminal may be incorporated in the mating component, and terminals provided on the plurality of electric wires 30 may be connected to the mating terminal.

[0029] The bundling member 50 is wound around the electric wire bundle 34. The bundling member 50 holds the plurality of electric wires 30 together in the state of the electric wire bundle 34. The bundling member 50 is a portion of the electric wire bundle 34 that is placed in an environment exposed to oil, and is provided at a branch portion 36 where some of the plurality of electric wires 30 branch off from other parts of the electric wires 30. The bundling member 50 includes a band portion 51 and a band holding portion 54.

[0030] The band portion 51 is wound around the electric wire bundle 34 in a state in direct contact with the outer periphery of the electric wire bundle 34. The band portion 51 is formed in the shape of a long, thin band extending from the band holding portion 54. The base end of the band portion 51 is continuous with the band holding portion 54. The tip end of the band portion 51 is engaged with the band holding portion 54. With the middle portion of the band portion 51 wound around the electric wire bundle 34, the base end and tip end of the band portion 51 are held by the band holding portion 54.

[0031] The band portion 51 includes a band main body portion 52 and an interposing portion 53. The band main body portion 52 is wound around the electric wire bundle 34 and held by the band holding portion 54. The interposing portion 53 is interposed at least partially between the band main body portion 52 and the electric wire bundle 34 and is in direct contact with the outer periphery of the electric wire bundle 34. In the portion of the band main body portion 52 where the interposing portion 53 is provided, the interposing portion 53 is in direct contact with the outer periphery of the electric wire bundle 34, and the band main body portion 52 is not in direct contact with the outer periphery of the electric wire bundle 34.

[0032] For example, the band main body 52 and the band holding portion 54 of the binding member 50 are components integrally molded from resin. The resin forming the band main body 52 and the band holding portion 54 is, for example, polyamide.

[0033] The interposing portion 53 is formed from a different material from the resin forming the band main body 52 and the band holding portion 54. The Young's modulus of the interposing portion 53 is smaller than that of the band main body 52. ​​This makes the interposing portion 53 more susceptible to elastic deformation than the band main body 52 and facilitates close contact with the wire bundle 34 without creating gaps. The static friction coefficient between the interposing portion 53 and the outer periphery of the wire bundle 34 is larger than the static friction coefficient between the band main body 52 and the outer periphery of the wire bundle 34. This facilitates increasing the static friction force between the interposing portion 53 and the outer periphery of the wire bundle 34. The interposing portion 53 is formed from an elastomer such as acrylic rubber. The interposing portion 53 may be integrally molded with the band main body 52 and the band holding portion 54 by, for example, two-color molding. The interposing portion 53 may be molded separately from the band main body 52 and the band holding portion 54 and then attached to the band main body 52 later. In this case, the method of attaching the intervening portion 53 to the band main body portion 52 is arbitrary. For example, the intervening portion 53 may be attached to the band main body portion 52 via an attachment portion such as an adhesive, or may be locked to the band main body portion 52 by a locking structure.

[0034] The band-attached fixing member 60 is provided at a location on the electric wire bundle 34 separate from the location where the binding member 50 is provided. The band-attached fixing member 60 includes a binding portion 61 and a fixing portion 66. For example, the band-attached fixing member 60 is a component integrally molded from resin using a mold. The resin forming the band-attached fixing member 60 may be the same type of resin as the resin forming the band main portion 52 and the band holding portion 54 of the binding member 50. The resin forming the band-attached fixing member 60 is, for example, polyamide.

[0035] The bundling portion 61 has a band portion 62 and a band holding portion 64. The band portion 62 is wound around the electric wire bundle 34 in a state where it is in direct contact with the outer periphery of the electric wire bundle 34. The band portion 62 is formed in the shape of a long, thin band extending from the band holding portion 64. The base end of the band portion 62 is connected to the band holding portion 64. The tip end of the band portion 62 is engaged with the band holding portion 64. With the middle portion of the band portion 62 wound around the electric wire bundle 34, the base end and tip end of the band portion 62 are held by the band holding portion 64. Unlike the band portion 51, the band portion 62 does not include the interposition portion 53.

[0036] The fixing portion 66 is a portion that can be fixed to the target location 13. With the bundling portion 61 attached to the electric wire bundle 34, the fixing portion 66 is fixed to the target location 13, thereby fixing the electric wire bundle 34 to the target location 13 in the vehicle. In this embodiment, the fixing portion 35 is set in the middle along the longitudinal direction of the electric wire bundle 34. The bundling portion 61 is attached to this fixing portion 35, and the fixing member with band 60 is fixed to the electric wire bundle 34. With the fixing member with band 60 fixed to the target location 13, the fixing portion 35 of the electric wire bundle 34 is fixed to the target location 13, which is a predetermined position within the case.

[0037] The binding member 50 does not have a portion corresponding to the fixing portion 66 of the band-attached fixing member 60. The band portion 62 of the band-attached fixing member 60 does not have a portion corresponding to the interposed portion 53 of the band portion 51 of the binding member 50. The band portion 62 of the band-attached fixing member 60 is formed from the same material as the band main body portion 52, and is wound around the outer periphery of the electric wire bundle 34 in a state of direct contact therewith.

[0038] <Configuration of wire bundles> The number of electric wires 30 in the wire harness 20 may be two or more and can be set appropriately. In the present embodiment, the wire harness 20 includes twelve electric wires 30. The twelve electric wires 30 may be electric wires 30 of the same diameter. The twelve electric wires 30 are bundled together in a state of being aligned parallel to one another to form a single linear body. The twelve electric wires 30 may be twisted. The electric wires 30 are signal or power wires. One end of each of the twelve electric wires 30 is connected to a common first connector 40. The other ends of the twelve electric wires 30 are branched in pairs and connected to six second connectors 42.

[0039] The number of branch portions 36 in the wire harness 20 is not particularly limited and can be set as appropriate. In this embodiment, five branch portions 36 are provided in the wire harness 20. The twelve electric wires 30 are branched in order into two wires at each branch portion 36.

[0040] More specifically, twelve electric wires 30 extending from the first connector 40 extend toward the second connector 42 as a bundle of electric wires 34A. Then, at branch portion 36A, which is the closest to the first connector 40 among the five branch portions 36, the bundle of electric wires 34A branches into a branch line 38A and an electric wire bundle 34B. The branch line 38A includes two electric wires 30 extending toward the second connector 42A. The bundle of electric wires 34B includes ten electric wires 30 excluding the two electric wires 30 of the branch line 38A.

[0041] At branch portion 36B, which is next closest to first connector 40 after branch portion 36A, wire bundle 34B branches into branch line 38B and wire bundle 34C. Branch line 38B includes two wires 30 heading toward second connector 42B. Wire bundle 34C includes eight wires 30 excluding the four wires 30 in branch line 38A and branch line 38B.

[0042] At branch portion 36C, which is next closest to first connector 40 after branch portion 36B, wire bundle 34C branches into branch line 38C and wire bundle 34D. Branch line 38C includes two electric wires 30 heading toward second connector 42C. Wire bundle 34D includes six electric wires 30 excluding the six electric wires 30 of branch line 38A, branch line 38B, and branch line 38C.

[0043] At branch portion 36D, which is next closest to first connector 40 after branch portion 36C, wire bundle 34D branches into branch line 38D and wire bundle 34E. Branch line 38D includes two electric wires 30 heading toward second connector 42D. Wire bundle 34E includes four electric wires 30, excluding the eight electric wires 30 of branch line 38A, branch line 38B, branch line 38C, and branch line 38D.

[0044] At branch portion 36E, which is next closest to first connector 40 after branch portion 36D, wire bundle 34E branches into branch lines 38E and 38F. Branch line 38E includes two wires 30 heading toward second connector 42E. Branch line 38F includes two wires 30 heading toward second connector 42F.

[0045] Here, a bundling member 50 is attached to the electric wire bundle 34 closer to the first connector 40 at each branch portion 36. Specifically, at branch portion 36A, a bundling member 50 is attached to electric wire bundle 34A. At branch portion 36B, a bundling member 50 is attached to electric wire bundle 34B. At branch portion 36C, a bundling member 50 is attached to electric wire bundle 34C. At branch portion 36D, a bundling member 50 is attached to electric wire bundle 34D. At branch portion 36E, a bundling member 50 is attached to electric wire bundle 34E.

[0046] Here, the band-attached fixing member 60 is provided between the first connector 40 and the branch portion 36A. Therefore, the band-attached fixing member 60 is wound around the electric wire bundle 34A. The band-attached fixing member 60 is provided between the first connector 40 and the bundling member 50 attached to the electric wire bundle 34A at the branch portion 36A. At the branch portion 36A, the bundling member 50 may not be attached to the electric wire bundle 34A, and the band-attached fixing member 60 may be attached instead of the bundling member 50.

[0047] The wire bundle 34 passes through the case 12 toward the electrical component 16 inside the case 12. One ends of the plurality of electric wires 30 are connected to the first connector 40. The first connector 40 is connected to the inner connector 14a. This allows the one ends of the plurality of electric wires 30 to be supported at a fixed position inside the case 12. The other ends of the plurality of electric wires 30 are connected to the second connector 42. The second connector 42 is connected to the connector 16a of the electrical component 16. This allows the other ends of the plurality of electric wires 30 to be supported at a fixed position inside the case 12. Middle portions of the plurality of electric wires 30 are fixed to the case 12 via the band-equipped fixing member 60. This allows the middle portions of the plurality of electric wires 30 to be supported at a fixed position inside the case 12.

[0048] The portion of the multiple electric wires 30 connected to the first connector 40 and the portion where the band-equipped fixing member 60 is provided are not fixed to the case 12. Similarly, the portion of the multiple electric wires 30 connected to the second connector 42 and the portion where the band-equipped fixing member 60 is provided are not fixed to the case 12. Therefore, the portion of the electric wire bundle 34 between the band-equipped fixing member 60 and the first connector 40 and the portion between the band-equipped fixing member 60 and the second connector 42 can move relatively freely relative to the case 12 compared to other portions.

[0049] <Configuration related to bundling of wire bundles using bundling members> The bundling member 50 is wound around the outer periphery of the plurality of electric wires 30 at the branch portion 36 located between the first connector 40 and the second connector 42. In this embodiment, the bundling member 50 is wound around the outer periphery of the plurality of electric wires 30 between the fixing portion 35 and the second connector 42. The distance between the fixing portion 35 and the bundling member 50 and the distance between two bundling members 50 are arbitrary.

[0050] The band portion 51 is wound around the electric wire bundle 34 in a state of direct contact with the outer periphery of the electric wire bundle 34. In other words, the electric wire bundle 34 is not covered with a corrugated tube, a rubber sheet, a rubber tube, an adhesive tape, or the like. Therefore, the electric wires 30 are directly exposed to the outer periphery of the electric wire bundle 34. The band portion 51 is wound around the electric wire bundle 34 in a state of direct contact with the coating 32 of the electric wires 30.

[0051] In at least a portion of the portion where the band portion 51 directly contacts the sheath 32 of the electric wire 30, the interposing portion 53 directly contacts the sheath 32 of the electric wire 30. In the present embodiment, the interposing portion 53 is provided in the band portion 51 along the entire length of the band main body portion 52. Therefore, in the portion where the band portion 51 contacts the electric wire bundle 34, the interposing portion 53 contacts the electric wire bundle 34 along the entire length in the circumferential direction. The interposing portion 53 may be provided partially along the longitudinal direction of the band main body portion 52. Furthermore, the interposing portion 53 may be provided entirely or partially along the width direction of the band main body portion 52. When the interposing portion 53 is provided partially along the width direction of the band main body portion 52, only one row of the interposing portion 53 may be provided. Furthermore, multiple rows of the interposing portions 53 may extend in the longitudinal direction of the band portion 51 while maintaining a state where they are aligned in the width direction of the band portion 51.

[0052] The band holding portion 54 holds the band portion 51 in a state where it is wound around the electric wire bundle 34. For example, the band holding portion 54 holds the band portion 51 as follows.

[0053] The band portion 51 is provided with a locking receiving portion 52a. The locking receiving portion 52a is provided at a position that avoids the portion of the band main body 52 where the intervening portion 53 is provided. Here, the intervening portion 53 is provided on one main surface of the band main body 52, and the locking receiving portion 52a is provided on the other main surface. The locking receiving portion 52a has multiple convex portions 52b and concave portions 52c that are alternately arranged along the longitudinal direction of the band main body 52. ​​Each convex portion 52b has a guide surface and a locking surface. The guide surface faces the tip side of the band main body 52. ​​The guide surface is an inclined surface that intersects both the extension direction and the thickness direction of the band main body 52. ​​The locking surface faces the base end side of the band main body 52. ​​The locking surface is a vertical surface that is parallel to the thickness direction of the band main body 52.

[0054] A through hole 54a is formed in the band holding portion 54. The band portion 51 is inserted into the through hole 54a. A locking claw 54b is provided on the inner surface of the through hole 54a. The locking claw 54b selectively locks with some of the multiple protrusions 52b. The locking claw 54b has a guide surface and a locking surface. The guide surface of the locking claw 54b faces one opening of the through hole 54a. The locking surface of the locking claw 54b faces the other opening of the through hole 54a. The guide surface of the locking claw 54b is an inclined surface that corresponds to the guide surface of the protrusion 52b. The locking surface is a surface that can be locked with the locking surface.

[0055] FIG. 5 is a diagram showing how the binding member 50 is used for binding.

[0056] With the band portion 51 wound around the electric wire bundle 34, the tip of the band portion 51 is inserted into the through hole 54a of the band holding portion 54. In this state, by pulling the tip of the band portion 51 that has come out of the through hole 54a of the band holding portion 54, the band portion 51 tightens the electric wire bundle 34. With the band portion 51 tightening the electric wire bundle 34, the locking claws 54b of the band holding portion 54 tighten with the locking receiving portions 52a of the band portion 51. This keeps the band portion 51 wound around the electric wire bundle 34.

[0057] More specifically, when band portion 51 is inserted through one opening of through-hole 54a, locking claw 54b comes into contact with protrusion 52b located at the tip end of lock-receiving portion 52a. At this time, the guide surface of locking claw 54b and the guide surface of protrusion 52b slide against each other, causing locking claw 54b to elastically deform and move away from protrusion 52b, allowing protrusion 52b to pass over locking claw 54b. When protrusion 52b passes locking claw 54b, the locking surface of protrusion 52b and the locking surface of locking claw 54b face each other. In this state, when a force is applied to remove band portion 51, the locking surfaces come into contact with each other, preventing removal. Thereafter, the multiple protrusions 52b pass over the locking claws 54b in sequence until the band portion 51 tightens the wire bundle 34 and can no longer be inserted into the through hole 54a, thereby causing the band portion 51 to be wrapped around the wire bundle 34 and held by the band holding portion 54.

[0058] In this embodiment, the band portion 51 is held by the band holding portion 54 in a state in which the interposition portion 53 together with the band main body portion 52 is inserted into the through-hole 54 a in the band holding portion 54 .

[0059] As shown in FIG. 5 , the tip of the band portion 51 that has been pulled out of the through hole 54a of the band holding portion 54 may be pulled by a tool 90. The tool 90 pulls the tip of the band portion 51 with a preset force. This makes it easier to stabilize the force with which the binding member 50 tightens the electric wire bundle 34. For example, the tool 90 pulls the tip of the band portion 51 from a state in which the band portion 51 is not tightening the electric wire bundle 34 or tightening the electric wire bundle 34 with a relatively weak force. This increases the force with which the band portion 51 tightens the electric wire bundle 34, and the reaction force that the tool 90 receives from the tip of the band portion 51 also increases. The tool 90 may be configured to cut off the tip of the band portion 51 when this reaction force exceeds a preset force.

[0060] <Configuration related to bundling of electric wire bundles by bundling part of fixing member with band> The band portion 62 of the band-equipped fixing member 60 is wound around the electric wire bundle 34 in a state of direct contact with the outer periphery of the electric wire bundle 34. In other words, the electric wire bundle 34 is not covered with a corrugated tube, a rubber sheet, a rubber tube, an adhesive tape, or the like. Therefore, the electric wires 30 are directly exposed to the outer periphery of the electric wire bundle 34. The band portion 62 is wound around the electric wire bundle 34 in a state of direct contact with the coating 32 of the electric wires 30.

[0061] The binding portion 61 has the same configuration as the binding member 50 excluding the interposition portion 53. The band portion 62 has the same configuration as the band main body portion 52. The band holding portion 64 has the same configuration as the band holding portion 64. The band portion 62 and band holding portion 64 of the band-attached fixing member 60 are also configured similarly to the band portion 51 and band holding portion 54 of the binding member 50, so that the band portion 51 is held by the band holding portion 54. That is, on one main surface of the band portion 62, a plurality of protrusions and recesses similar to the locking receiving portion 52a are formed alternately and continuously along the longitudinal direction of the band portion 62 to form the locking receiving portion. The band holding portion 64 has a through hole 64a through which the band portion 62 can pass, and a locking claw is formed in the through hole 64a so that the band portion 62 can be locked to the locking receiving portion.

[0062] With the band portion 62 wound around the electric wire bundle 34, the tip of the band portion 62 is inserted into the through hole 64a of the band holding portion 64. In this state, by pulling the tip of the band portion 62 that has come out of the through hole 64a of the band holding portion 64, the band portion 62 tightens the electric wire bundle 34. The tip of the band portion 62 can also be pulled by the tool 90, similar to the binding member 50. With the band portion 62 tightening the electric wire bundle 34, the locking claws of the band holding portion 64 tighten with the locking receiving portions of the band portion 62. This keeps the band portion 62 wound around the electric wire bundle 34.

[0063] <Examples of coating materials> An example of the material of the coating 32 of the electric wire 30 will be described.

[0064] As described above, the electric wire 30 is located in an environment where it is exposed to oil. Furthermore, when installed in a vehicle, the electric wire 30 may come into contact with surrounding components due to vibrations or the like. For this reason, the coating 32 is preferably made of a material that is excellent in oil resistance and abrasion resistance. The material of the coating 32 may be, for example, fluororesin, silicone rubber, or electronically cross-linked polyethylene.

[0065] The oil resistance that is desirable for the coating 32 may satisfy the oil resistance specified by JIS C 3406-1993. In this oil resistance test, it is recommended to use No. 1 lubricating oil specified in JIS K 2215.

[0066] The immersion time is 20 hours according to the test specified in JIS C 3406-1993. A longer immersion time is preferable to satisfy the oil resistance requirement. Therefore, the immersion time may be 50 hours. More preferably, the immersion time may be 100 hours.

[0067] The abrasion resistance desired for the coating 32 may be evaluated by the abrasion test (scrape) described in JASO D 618, Automotive Parts - Test Methods for Low-Voltage Wires. The abrasion test (scrape) specified by JASO D 618 involves measuring the number of times a needle is moved back and forth against a horizontally fixed sample while being pressed with a constant load until the needle establishes electrical contact with the conductor inside the sample. For example, the abrasion test is performed by pressing a needle against the sample with a load of 7 N.

[0068] The desirable wear resistance of the coating 32 may be such that the number of movements before the needle becomes conductive with the conductor inside the sample is 100 or more, more preferably 150 or more, and even more preferably 200 or more.

[0069] It is also preferable that the coating 32 has excellent heat resistance. For example, in a heat resistance test conforming to the provisions of JIS C 3406-1993, it is preferable that the coating 32 exhibits heat resistance at temperatures of 80°C or higher, and more preferably at temperatures of 100°C or higher.

[0070] <Example of fixed part configuration> In this embodiment, the fixing portion 66 is formed so as to be insertable into and fixed to a hole formed in the fixing target portion 13. For example, the fixing portion 66 includes a dish-shaped portion 67, a column-shaped portion 68, and a pair of fixing locking pieces 69. The dish-shaped portion 67 is a dish-shaped portion that spreads outward from one surface around the band holding portion 64. The dish-shaped portion 67 is a portion that functions similarly to a disc spring. The column-shaped portion 68 is a long, slender portion that protrudes from the inner center of the dish-shaped portion 67 toward the opposite side from the band portion 62. The pair of fixing locking pieces 69 extend in an outward inclined manner from the tip of the column-shaped portion 68 toward the base end. The pair of fixing locking pieces 69 are configured so as to be elastically deformable in a direction approaching the column-shaped portion 68.

[0071] When the fixing portion 66 is inserted into a hole formed in the target portion 13, the outward surfaces of the pair of fixing locking pieces 69 come into contact with the edge of the hole, allowing the pair of fixing locking pieces 69 to elastically deform in a direction approaching the columnar portions 68. When the fixing portion 66 is further pressed in, the pair of fixing locking pieces 69 come out of the hole and return to their original shape. The tip ends of the pair of fixing locking pieces 69 can then be locked and prevented from coming off from the periphery of the hole in the target portion 13. The dish-shaped portion 67 can come into contact with the periphery of the target portion 13 from the opposite side of the pair of fixing locking pieces 69. Therefore, the dish-shaped portion 67 and the pair of fixing locking pieces 69 sandwich both sides of the target portion 13 around the periphery of the hole. This fixes the fixing portion 66 to the target portion 13.

[0072] The fixing portion 66 does not necessarily have to have the above-described configuration. For example, the fixing portion 66 may have a tree-like clip configuration in which a plurality of dish-shaped portions are formed at intervals around a pillar-shaped portion. The band-attached fixing member 60 may also be a component called a band-attached clamp or band-attached clip, for example.

[0073] <About the exam> FIG. 6 is an explanatory diagram showing how the force required to displace the binding member 50 is tested.

[0074] The test shown in FIG. 6 was performed by using a pulling plate 102 to push the band portion 51 toward the other end of the electric wire bundle 34, with one end of the electric wire bundle 34 fixed by a test fixture 100. The pulling plate 102 was formed with a hole 104 of a diameter that allowed the electric wire bundle 34 to pass through but not the band portion 51. The portion of the electric wire bundle 34 between the band portion 51 and the fixed end at one end was passed through the hole 104, and a force F was applied to the pulling plate 102 in a direction away from the fixed end at one end of the electric wire bundle 34. Hereinafter, this type of test will be referred to as a push-pull test.

[0075] In the push-pull test, the force F at the time when the band portion 51 moved relative to the wire bundle 34 was used as the evaluation value. This force F is considered to correspond to, for example, the static friction force between the wire bundle 34 and the band portion 51. The static friction force between the wire bundle 34 and the band portion 51 is considered to correspond to the product of the static friction coefficient between the wire bundle 34 and the band portion 51 and the normal force of the band portion 51. Furthermore, the normal force of the band portion 51 is considered to correspond to the force with which the band portion 51 fastens the wire bundle 34. The force with which the band portion 51 fastens the wire bundle 34 is considered to be a force corresponding to the force with which the tool 90 pulls the tip of the band portion 51. Although the force with which the tool 90 pulls the tip of the band portion 51 is a preset value, the force with which the band portion 51 fastens the wire bundle 34 is prone to variation for the following reasons.

[0076] That is, when the band portion 51 of the binding member 50 is held by the band holding portion 54, a swing back may occur depending on the relationship between the engagement position between the locking receiving portion 52a of the band portion 51 and the locking claw 54b of the band holding portion 54 and the thickness of the electric wire bundle 34. Specifically, when one of the multiple protrusions 52b of the locking receiving portion 52a engages with the locking claw 54b, the electric wire bundle 34 within a certain range of thicknesses can be locked by this engagement. In the case of a thin electric wire bundle 34 within this range, when the tool 90 releases the band portion 51, the band portion 51 moves back slightly, and the locking surface of the band portion 51 engages with the locking surface of the band holding portion 54. As a result, the force with which the band portion 51 tightens the electric wire bundle 34 is likely to vary, and the standard deviation is likely to be relatively large.

[0077] FIG. 7 shows the test results of the binding member 50 and the comparative binding member.

[0078] The test results shown for Sample 1 in FIG. 7 are the results of multiple push-pull tests conducted on an electric wire bundle 34 wrapped with the binding member 50. The test results shown for Sample 2 in FIG. 7 are the results of multiple push-pull tests conducted on an electric wire bundle 34 wrapped with a comparative binding member. The comparative binding member is a binding member that does not have an intervening portion 53. The push-pull tests for Sample 1 and Sample 2 were conducted under the same conditions except for the presence or absence of the intervening portion 53. Note that, because the binding portion 61 of the band-attached fixing member 60 also does not have an intervening portion 53, the band-attached fixing member 60 can be used as the comparative binding member.

[0079] As shown in Figure 7, in sample 1, the average value μ of the force F required to move the band portion 51 was 50.9 N, and the standard deviation σ was 11.2 N. The values ​​(μ-σ), (μ-2σ), and (μ-3σ) calculated from these average values ​​μ and standard deviations were 39.7 N, 28.5 N, and 17.3 N, respectively.

[0080] In contrast, in sample 2, the average value μ of the force F required to move the band portion was 20.6 N, and the standard deviation σ was 12.7 N. The value (μ-σ) calculated from these average value μ and standard deviation was 7.9 N, and the values ​​of (μ-2σ) and (μ-3σ) were negative.

[0081] As described above, the average value μ of Sample 1 was greater than the average value μ of Sample 2. This shows that the band portion 51 of the binding member 50 is less likely to shift out of position with respect to the wire bundle 34 than the band portion of the comparative binding member. Furthermore, (μ-σ), (μ-2σ), and (μ-3σ) of Sample 1 were greater than (μ-σ), (μ-2σ), and (μ-3σ) of Sample 2, respectively. This shows that when the binding member 50 is used, it is easier to stably achieve a state where it is less likely to shift out of position with respect to the wire bundle 34 than when the comparative binding member is used. Thus, it is preferable that (μ-σ) of sample 1 is larger than (μ-σ) of sample 2, it is more preferable that (μ-σ) and (μ-2σ) of sample 1 are larger than (μ-σ) and (μ-2σ) of sample 2, and it is even more preferable that (μ-σ), (μ-2σ) and (μ-3σ) of sample 1 are larger than (μ-σ), (μ-2σ) and (μ-3σ) of sample 2.

[0082] In Sample 1, (μ-σ), (μ-2σ), and (μ-3σ) are all positive values, indicating that a product is unlikely to be produced in which the band portion 51 of the binding member 50 can move with a weak force relative to the wire bundle 34. In contrast, in Sample 2, although (μ-σ) is a positive value, (μ-2σ) and (μ-3σ) are all negative values, indicating that a product is likely to be produced in which the band portion of the comparative binding member can move with a weak force relative to the wire bundle 34 compared to Sample 1. Thus, it is preferable that (μ-σ) in Sample 1 is a positive value, it is more preferable that (μ-σ) and (μ-2σ) in Sample 1 are positive values, and it is even more preferable that (μ-σ), (μ-2σ), and (μ-3σ) in Sample 1 are positive values.

[0083] Here, when the test value exceeds the reference value, the binding member 50 is more reliably less likely to shift position relative to the wire bundle 34. The reference value is not particularly limited, and may be, for example, 8 N to 15 N, or may be 10 N. In this case, in Sample 1, in addition to the average value μ, (μ-σ), (μ-2σ), and (μ-3σ) all exceed 10 N. As described above, the standard deviation tends to be large when the band portion 51 is held by the band holding portion 54. Even in this case, since (μ-σ), (μ-2σ), and (μ-3σ) exceed 10 N in Sample 1, it is understood that it is difficult to manufacture a wire harness 20 in which the force does not exceed 10 N, that is, it is difficult to manufacture a wire harness 20 in which the band portion 51 of the binding member 50 can move relative to the wire bundle 34 with a force weaker than 10 N. In contrast, in sample 2, although the average value μ exceeds 10 N, (μ-σ), (μ-2σ), and (μ-3σ) do not exceed 10 N. Therefore, it can be seen that while the comparative binding member produces products in which the band portion can withstand a force of 10 N applied to the wire bundle 34, it is also likely to produce products that cannot withstand a force of 10 N. Thus, it is preferable that (μ-σ) of sample 1 exceeds the standard value, it is more preferable that (μ-σ) and (μ-2σ) of sample 1 exceed the standard value, and it is even more preferable that (μ-σ), (μ-2σ), and (μ-3σ) of sample 1 exceed the standard value.

[0084] As described above, it was found that the band portion 51 of the binding member 50 is less likely to shift out of position than the comparative binding member.

[0085] <Effects, etc.> In the wire harness 20 configured as described above, the provision of the interposition portion 53 in the band portion 51 of the binding member 50 increases the static friction force between the binding member 50 and the electric wire bundle 34, thereby preventing the binding member 50 from shifting relative to the electric wire bundle 34. This allows the binding member 50 to easily regulate the path of the wire harness 20 in an environment exposed to oil.

[0086] Here, the electric wire bundle 34 has a branched portion 36 between the band-attached fixing member 60 and the second connector 42. A bundling member 50 is attached to this branched portion 36 to maintain the branched shape of the branched portion 36. Furthermore, the electric wire bundle 34 is not fixed to the case 12 between the band-attached fixing member 60 and the second connector 42. Therefore, the portion of the electric wire bundle 34 between the band-attached fixing member 60 and the second connector 42 can move relatively freely relative to the case 12, compared to the portion of the electric wire bundle 34 that is fixed to the case 12, during vehicle vibrations, etc. This may result in a force being applied to the bundling member 50 that shifts the bundling member 50 in the longitudinal direction relative to the electric wire bundle 34. In particular, in this embodiment, the bundling member 50 is located in the middle of the electric wire bundle 34, both ends of which are supported by the vehicle, and the bundling member 50 is not directly supported by the vehicle. Furthermore, if the bundling member 50 is immersed in oil, the bundling member 50 encounters resistance from the oil when attempting to move. Therefore, a relatively large force is applied to the bundling member 50.

[0087] If the bundling member 50 were to move in the longitudinal direction of the wire bundle 34 due to this force, the wires 30 could be pulled by the bundling member 50. If a tensile load due to this pulling is applied to the portion of the wires 30 connected to the connector, this could affect the connection state. In contrast, in the present disclosure, the bundling member 50 is less likely to shift in the longitudinal direction of the wire bundle 34, making this type of situation less likely to occur.

[0088] The wire harness 20 further includes a band-attached fixing member 60. While the binding member 50 is not fixed to the vehicle, the band-attached fixing member 60 is fixed to the vehicle. Therefore, the likelihood of misalignment between the band-attached fixing member 60 and the electric wire bundle 34 is smaller than the likelihood of misalignment between the binding member 50 and the electric wire bundle 34. Therefore, the band-attached fixing member 60 can omit the interposition portion 53, thereby simplifying the configuration accordingly.

[0089] The portion of the multiple electric wires 30 connected to the first connector 40 and the portion where the band-attached fixing member 60 is provided are also not fixed to the case 12. Therefore, the portion of the electric wire bundle 34 between the band-attached fixing member 60 and the first connector 40 can move relatively freely relative to the case 12 compared to the portion fixed to the case 12. However, there is no branch portion 36 between the portion of the multiple electric wires 30 connected to the first connector 40 and the portion where the band-attached fixing member 60 is provided, and the multiple electric wires 30 connected to the first connector 40 extend to the position of the band-attached fixing member 60 while maintaining the same combination. Therefore, even if a bundling member 50 is not provided between the portion of the multiple electric wires 30 connected to the first connector 40 and the portion where the band-attached fixing member 60 is provided, the multiple electric wires 30 can easily be kept together. However, a bundling member 50 may also be provided between the portion of the multiple electric wires 30 connected to the first connector 40 and the portion where the band-attached fixing member 60 is provided.

[0090] Furthermore, the coating 32, which has better abrasion resistance than the intervening portion 53, forms the outer periphery of the wire bundle 34. The wire bundle 34 may come into contact with surrounding components due to vibrations or other factors in an environment in which it is installed in a vehicle. Even in this case, because the coating 32 has better abrasion resistance than the intervening portion 53, the wires 30 are less likely to be damaged when the wire bundle 34 comes into contact with surrounding components, compared to when the material of the intervening portion 53 is used as the material of the coating 32. The intervening portion 53 suppresses misalignment between the wire bundle 34 and the binding member 50, so the intervening portion 53 is more likely to be kept in contact with the wire bundle 34 at a constant position. Therefore, the intervening portion 53 is less likely to rub against the wire bundle 34 or surrounding components, and problems are less likely to occur even if the intervening portion 53 does not have the same abrasion resistance as the coating 32. Because the intervening portion 53 does not have the same abrasion resistance as the coating 32, material selection and cost reduction for the intervening portion 53 are easier.

[0091] Furthermore, if the plurality of electric wires 30 are coated with fluororesin, silicone rubber, or electronically cross-linked polyethylene, the band portion 51 is likely to slip. In such cases, the interposition portion 53 can effectively prevent the band portion 51 from shifting position.

[0092] If the band portion 51 is easily slippery on the coating 32, it may be possible to roughen the surface of the coating 32 to prevent slippage. As described above, by using the binding member 50, it is possible to prevent the band portion 51 from shifting position without roughening the surface of the electric wire 30.

[0093] Furthermore, the band portion 51 is held by the band holding portion 54 with the interposing portion 53, together with the band main portion 52, inserted through the through hole 54a in the band holding portion 54. The band portion 51 is typically long so that it can accommodate objects of different thicknesses. When the object to be bound is thin, for example, an unnecessary portion is generated further forward than the portion held by the band holding portion 54. This unnecessary portion is cut off as necessary. Even in this case, the portion of the band portion 51 with the interposing portion 53 can also be held by the band holding portion 54, so the interposing portion 53 can be provided along the entire length of the band main portion 52 before cutting. This widens the range of thicknesses of the wire bundles 34 that one type of binding member 50 can accommodate, thereby preventing an increase in the number of types of binding members 50 used and facilitating management of the binding members 50.

[0094] Furthermore, in the push-pull test, the force F required to move the binding member 50 was greater than the force F required to move a comparative binding member that was not provided with the interposition portion 53. This more reliably obtains the wire harness 20 in which the binding member 50 is less likely to slip relative to the wire bundle 34.

[0095] [Note] Although the wire harness 20 has been described so far as including the band-attached fixing member 60 without the interposition portion 53, this is not an essential configuration. For example, the wire harness 20 may not include the band-attached fixing member 60. Alternatively, for example, the wire harness 20 may include a band-attached fixing member with the interposition portion 53.

[0096] Furthermore, although the coating 32 has been described above as having better wear resistance than the interposed portion 53, this is not a required configuration. For example, the coating 32 may have the same wear resistance as the interposed portion 53, or the interposed portion 53 may have better wear resistance than the coating 32. For example, this configuration may be used when the coating 32 is unlikely to come into contact with surrounding components.

[0097] Furthermore, although it has been described above that the band portion 51 is held by the band holding portion 54 in a state in which the interposition portion 53, together with the band main body portion 52, is inserted into the through-hole 54a in the band holding portion 54, this is not an essential configuration. For example, the interposition portion 53 does not have to be inserted into the through-hole 54a.

[0098] The configurations described in the above embodiments and modifications can be combined as appropriate as long as they are not mutually contradictory. [Explanation of symbols]

[0099] 10 equipment 12 cases 13 Fixation target area 14 Relay connector 14a Inner connector 14b Outer Connector 16 Electrical Components 18 External Wire Harness 18a connector 20 Wire harness 30 Electric wire 31 Core Wire 32 Covering 34, 34A, 34B, 34C, 34D, 34E wire bundle 35 Fixed area 36, 36A, 36B, 36C, 36D, 36E Branch 38A, 38B, 38C, 38D, 38E, 38F branch lines 40 First Connector 42, 42A, 42B, 42C, 42D, 42E, 42F Second connector 50 Binding member 51 Band Club 52 Band body 52a Locking receiver 52b Convex part 52c recess 53 Interposition part 54 Band holder 54a through hole 54b Locking claw 60 Fixing member with band 61 Binding section 62 Band Club 64 Band holder 64a through hole 66 Fixed part 67 Dish-shaped part 68 Columnar part 69 Fixed locking piece 90 Tools 100 Test fixture 102 Tension plate 104 holes

Claims

1. a wire bundle including a plurality of wires; a bundling member including a band portion wound around the electric wire bundle in a state of being in direct contact with an outer periphery of the electric wire bundle, and a band holding portion that holds the band portion in a state of being wound around the electric wire bundle; Equipped with the bundling member is a portion of the electric wire bundle that is placed in an environment exposed to oil, and is provided at a branching portion where some electric wires of the plurality of electric wires branch off from other electric wires, the band portion includes a band main body portion wound around the electric wire bundle and held by the band holding portion, and an interposition portion interposed at least partially between the band main body portion and the electric wire bundle and in direct contact with the outer periphery of the electric wire bundle, the Young's modulus of the intermediate portion is smaller than the Young's modulus of the band main body portion, a static friction coefficient between the interposed portion and the outer periphery of the electric wire bundle is greater than a static friction coefficient between the band main body portion and the outer periphery of the electric wire bundle, The electric wire bundle further includes a band-attached fixing member including a band portion and a fixing portion that fixes the electric wire bundle to a fixing target portion in a vehicle, the band-attached fixing member is provided at a location of the electric wire bundle different from a location at which the bundling member is provided, The binding member does not have a portion corresponding to the fixing portion of the band-attached fixing member, The band portion of the band-attached fixing member does not have a portion corresponding to the interposition portion of the band portion of the binding member, The band portion of the band-attached fixing member is formed of the same material as the band main body and is wound around the bundle of electric wires in a state of direct contact with the outer periphery of the bundle of electric wires.

2. The wire harness according to claim 1, Each of the plurality of electric wires has a core wire and a coating that covers the core wire, the coating has higher wear resistance than the intermediate portion, The wire harness, wherein the covering forms the outer periphery of the bundle of electric wires.

3. The wire harness according to claim 1 or 2, The wire harness, wherein the plurality of electric wires are electric wires coated with fluororesin, silicone rubber, or electronically cross-linked polyethylene.

4. The wire harness according to any one of claims 1 to 3, The wire harness, wherein the band portion is held by the band holding portion in a state in which the interposition portion is inserted together with the band main body portion into a through hole in the band holding portion.

5. The wire harness according to any one of claims 1 to 4, A wire harness in which the force required to move the binding member in a test in which the binding member is shifted in the longitudinal direction of the wire bundle while the wire bundle is fixed is greater than the force required to move the comparative binding member when a test similar to the test is performed using a comparative binding member that does not have the intervening portion.

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