wire harness

Abstract

The present disclosure provides a wire harness capable of improving manufacturability. The wire harness (20) includes a first conductive path (21), a second conductive path (22) different from the first conductive path (21), and an outer member (23) covering the first conductive path (21) and the second conductive path (22). The first conductive path (21) includes a first tubular conductor (31) having a tubular shape and having conductivity. The second conductive path (22) includes a second tubular conductor (41) having a tubular shape and having conductivity. A thickness (T11) of the first tubular conductor (31) is different from a thickness (T21) of the second tubular conductor (41).

Description

Technical Field

[0001] This disclosure relates to a wire harness. Background Technology

[0002] Currently, in vehicle wiring harnesses, for example as described in Patent Document 1, there exist wiring harnesses with conductive circuits, which include cylindrical conductors capable of maintaining their shape. These conductive circuits electrically connect the electrical devices mounted in the vehicle to each other.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: International Publication No. 2016 / 171204 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] The aforementioned wire harness sometimes has multiple conductive paths, each containing a cylindrical conductor. In such a wire harness, when the current values ​​passing through each conductive path are different, the cross-sectional area of ​​the cylindrical conductor is ensured based on the current values ​​passing through each conductive path. For example, if the thickness of each cylindrical conductor is kept constant, while the outer diameter of the cylindrical conductor is varied, it is easy to ensure a cross-sectional area corresponding to the current value passing through each cylindrical conductor.

[0008] However, generally speaking, when using inflexible cylindrical conductors for wire harnesses, the conductors are pre-bent using a tube bending machine (tube bending processing device) to achieve a shape that matches the wiring path. In the tube bending machine, a die corresponding to the outer diameter of the cylindrical conductor being bent is used. Therefore, to bend multiple cylindrical conductors with different outer diameters, the die of the tube bending machine must be switched according to the outer diameter of the conductor, resulting in a reduction in the manufacturability of the wire harness.

[0009] The purpose of this disclosure is to provide a wire harness that can improve manufacturability.

[0010] Solution for solving the problem

[0011] The wire harness disclosed herein includes: a first conductive path; a second conductive path, which is different from the first conductive path; and an outer casing that covers the first conductive path and the second conductive path, the first conductive path having a conductive cylindrical first cylindrical conductor, the second conductive path having a conductive cylindrical second cylindrical conductor, the thickness of the first cylindrical conductor being different from the thickness of the second cylindrical conductor.

[0012] The effects of the invention

[0013] The wire harness disclosed herein can improve manufacturability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram illustrating the wiring harness layout in a vehicle according to one embodiment.

[0015] Figure 2 This is a schematic diagram illustrating a wire harness in one embodiment.

[0016] Figure 3 This is a perspective view showing a portion of a conductive path in one embodiment.

[0017] Figure 4 This is a cross-sectional view of a wire harness in one embodiment.

[0018] Figure 5 This is a cross-sectional view showing the end of a conductive path in one embodiment.

[0019] Figure 6 This is a cross-sectional view showing the end of a conductive path in one embodiment.

[0020] Figure 7 This is a top view showing the end of the cylindrical conductor in a modified example. Detailed Implementation

[0021] [Description of embodiments of this disclosure]

[0022] First, embodiments of this disclosure will be described.

[0023] The wire harness configuration disclosed herein is as follows:

[0024] [1] A wire harness comprising: a first conductive path; a second conductive path different from the first conductive path; and an outer component covering the first conductive path and the second conductive path, the first conductive path having a first cylindrical conductor having conductivity, the second conductive path having a second cylindrical conductor having conductivity, the thickness of the first cylindrical conductor being different from the thickness of the second cylindrical conductor.

[0025] According to this structure, a cross-sectional area corresponding to the current value passing through each of the first and second cylindrical conductors can be ensured, and the outer diameters of the first and second cylindrical conductors can be set to be equal or close to a size that allows the use of the same die in a tube bending machine. In this way, bending processing can be performed on both the first and second cylindrical conductors without changing the die of the tube bending machine. As a result, the manufacturability of the wire harness can be improved.

[0026] [2] Preferably, the first conductive path further includes a first flexible conductor that is conductive and electrically connected to the end of the first cylindrical conductor, and the second conductive path further includes a second flexible conductor that is conductive and electrically connected to the end of the second cylindrical conductor, wherein the flexibility of the first flexible conductor is superior to that of the first cylindrical conductor, and the flexibility of the second flexible conductor is superior to that of the second cylindrical conductor.

[0027] According to this structure, when the vehicle vibrates, the first flexible conductor can absorb the positional displacement between the components connected to both sides of the first flexible conductor caused by the vibration. Similarly, the second flexible conductor can absorb the positional displacement between the components connected to both sides of the second flexible conductor caused by the vibration.

[0028] [3] Preferably, the first cylindrical conductor and the first flexible conductor are covered together by the outer casing, and the second cylindrical conductor and the second flexible conductor are covered together by the outer casing.

[0029] According to this structure, since the outer casing covering both the first cylindrical conductor and the first flexible conductor is shared, the number of parts is reduced compared to the case where separate outer casings are provided for the first cylindrical conductor and the first flexible conductor. Furthermore, since the seam between the portion of the outer casing covering the first cylindrical conductor and the portion covering the first flexible conductor can be eliminated, it is possible to prevent liquids such as water from seeping into the interior of the outer casing. As a result, it is possible to prevent liquids from adhering to the electrical connection portion between the first cylindrical conductor and the first flexible conductor. Moreover, waterproof components such as a sheath installed at this seam can be omitted.

[0030] Similarly, since the outer casing covering the second cylindrical conductor and the second flexible conductor is shared, the number of parts is reduced compared to the case where separate outer casings are provided for the second cylindrical conductor and the second flexible conductor. Furthermore, since the seam between the portion of the outer casing covering the second cylindrical conductor and the portion covering the second flexible conductor can be eliminated, it is possible to prevent liquids such as water from seeping into the interior of the outer casing. As a result, it is possible to prevent liquids from adhering to the electrical connection portion between the second cylindrical conductor and the second flexible conductor. Moreover, waterproof components such as a sheath installed at this seam can be omitted.

[0031] [4] Preferably, the outer component is a corrugated tube with superior flexibility compared to the first cylindrical conductor and the second cylindrical conductor. There is a gap between the outer peripheral surface of the first cylindrical conductor and the inner peripheral surface of the corrugated tube, which allows relative movement between the corrugated tube and the first cylindrical conductor in a direction orthogonal to the axial direction of the corrugated tube. There is also a gap between the outer peripheral surface of the second cylindrical conductor and the inner peripheral surface of the corrugated tube, which allows relative movement between the corrugated tube and the second cylindrical conductor in a direction orthogonal to the axial direction of the corrugated tube. The wiring harness has a fixing component for holding the corrugated tube and fixing it to the vehicle.

[0032] According to this structure, within the gap between the outer peripheral surface of the first cylindrical conductor and the inner peripheral surface of the bellows, the first cylindrical conductor can move relative to the bellows in a direction orthogonal to the axial direction of the bellows. Furthermore, the first cylindrical conductor is fixed to the vehicle by securing the bellows to the vehicle using a fixing member. Therefore, by deforming the bellows, which has superior flexibility compared to the first cylindrical conductor, dimensional tolerances between the vehicle and the first cylindrical conductor can be absorbed even without movement of the first cylindrical conductor relative to the vehicle.

[0033] Similarly, within the gap between the outer circumferential surface of the second cylindrical conductor and the inner circumferential surface of the bellows, the second cylindrical conductor can move relative to the bellows in a direction orthogonal to the axial direction of the bellows. Furthermore, the second cylindrical conductor is fixed to the vehicle by securing the bellows to the vehicle using a fixing member. Therefore, by deforming the bellows, which has superior flexibility compared to the second cylindrical conductor, dimensional tolerances between the vehicle and the second cylindrical conductor can be absorbed even without movement of the second cylindrical conductor relative to the vehicle.

[0034] [5] Preferably, the outer casing includes: a first outer casing that covers the first conductive path; and a second outer casing that is separately disposed from the first outer casing and covers the second conductive path.

[0035] According to this structure, compared with the case where the first and second conductive paths are covered together by an external component, the wire harness can be miniaturized.

[0036] [6] Preferably, the outer casing covers both the first conductive path and the second conductive path.

[0037] According to this structure, the number of parts is reduced compared to the case where separate outer components cover the first conductive circuit and the second conductive circuit are provided. Furthermore, since the first and second conductive circuits are housed within a single outer component, the handling of the wiring harness becomes easier. Therefore, it is easier to secure the wiring harness to the vehicle.

[0038] [7] Preferably, the first cylindrical conductor has a first connecting portion with a flat first connecting surface at its end, and the second cylindrical conductor has a second connecting portion with a flat second connecting surface at its end. The first connecting portion has a first connecting hole that penetrates the first connecting portion in a direction intersecting the first connecting surface, and the second connecting portion has a second connecting hole that penetrates the second connecting portion in a direction intersecting the second connecting surface.

[0039] According to this structure, by using bolts or the like, the first connection portion can be directly connected to the terminal or other connecting parts of the electrical equipment mounted on the vehicle. Therefore, it is not necessary to separately connect the connecting terminal to the connecting parts of the electrical equipment at the end of the first cylindrical conductor. This reduces the number of components constituting the first conductive circuit. Similarly, by using bolts or the like, the second connection portion can be directly connected to the terminal or other connecting parts of the electrical equipment mounted on the vehicle. Therefore, it is not necessary to separately connect the connecting terminal to the connecting parts of the electrical equipment at the end of the second cylindrical conductor. This reduces the number of components constituting the second conductive circuit.

[0040] [8] Preferably, the first connecting hole is a longer elongated hole in the direction in which the first cylindrical conductor extends, and the second connecting hole is a longer elongated hole in the direction in which the second cylindrical conductor extends.

[0041] According to this structure, the dimensional tolerance between the connecting component of the electrical device and the first conductive path in the direction in which the first cylindrical conductor extends can be absorbed in the first connecting hole. Similarly, the dimensional tolerance between the connecting component of the electrical device and the second conductive path in the direction in which the second cylindrical conductor extends can be absorbed in the second connecting hole.

[0042] [Details of the embodiments disclosed herein]

[0043] Hereinafter, specific examples of the wire harnesses disclosed herein will be described with reference to the accompanying drawings. The invention is not limited to these examples, but is shown in the claims and is intended to include all modifications with the same meaning and scope as the claims.

[0044] The following describes one embodiment of the wire harness. Additionally, for ease of explanation, parts of the structure are sometimes shown exaggeratedly or simplified in the accompanying drawings. Furthermore, the dimensional ratios of the constituent elements in the drawings sometimes differ from the actual dimensional ratios or those in other drawings.

[0045] (Overall structure of wire harness 20)

[0046] like Figure 1 As shown, the wiring harness 20 electrically connects the electrical equipment 11 mounted on the vehicle 10, such as an automobile, to each other. Figure 1 Only four of the multiple electrical devices 11 mounted on the vehicle are shown in the diagram. The wiring harness 20 is laid out while bending, according to the shape of the space used to lay the wiring harness 20. In addition, most of the wiring harness 20 in this embodiment is laid under the floor of the vehicle 10. The wiring harness 20 can be used, for example, as a low-voltage wiring harness that supplies current from a low-voltage battery that can supply a voltage of about 12 volts, and it can also be used as a high-voltage wiring harness that supplies current from a high-voltage battery that can supply a voltage of several hundred volts or more higher than that of a low-voltage battery.

[0047] like Figure 1 and Figure 2 As shown, the wire harness 20 includes a first conductive path 21, a second conductive path 22 different from the first conductive path 21, and an outer component 23 covering the first conductive path 21 and the second conductive path 22.

[0048] The first conductive path 21 electrically connects the electrical device 12, which is located near the front of the vehicle 10, to the electrical device 13, which is located further back from the vehicle 10 than the electrical device 12. The second conductive path 22 electrically connects the electrical device 14, which is located near the front of the vehicle 10, to the electrical device 15, which is located further back from the vehicle 10 than the electrical device 12.

[0049] (Structure of the first conductive circuit 21)

[0050] like Figure 3 As shown, the first conductive path 21 includes a first cylindrical conductor 31 with conductivity. The first cylindrical conductor 31 is a hollow cylindrical conductor. The first cylindrical conductor 31 can maintain its shape. As the material for the first cylindrical conductor 31, for example, copper-based, aluminum-based, or other metallic materials can be used. Furthermore, Figure 2 In the diagram, the first cylindrical conductor 31 is simplified and shown by dashed lines.

[0051] like Figure 4 As shown, the cross-sectional shape (i.e., the cross-sectional shape) obtained by cutting the first cylindrical conductor 31 using a plane perpendicular to the length direction of the first cylindrical conductor 31, that is, the axial direction of the first cylindrical conductor 31 in the direction in which the first cylindrical conductor 31 extends, can be set to any shape. Furthermore, Figure 4 yes Figure 3The figure shows a cross-sectional view (4-4). In this embodiment, the first cylindrical conductor 31 has an annular cross-sectional shape. That is, the first cylindrical conductor 31 in this embodiment is cylindrical. Furthermore, the cross-sectional shape of the first cylindrical conductor 31 in this embodiment is constant except for its two ends. Therefore, except for its two ends, the outer diameter D11 and inner diameter D12 of the first cylindrical conductor 31 are constant along the direction in which the first cylindrical conductor 31 extends, and the thickness T11 of the first cylindrical conductor 31 is constant along the direction in which the first cylindrical conductor 31 extends.

[0052] The first conductive path 21 has an insulating covering portion 32 that covers the outer peripheral surface of the first cylindrical conductor 31. The insulating covering portion 32 is made of an insulating material such as synthetic resin. The insulating covering portion 32 is cylindrical. In this embodiment, the insulating covering portion 32 is inserted into the first cylindrical conductor 31 before the first cylindrical conductor 31 is bent. Then, the first cylindrical conductor 31, with the insulating covering portion 32 attached, is bent at multiple points using a tube bending machine to form a shape corresponding to the wiring path in the vehicle 10. In addition, both ends of the first cylindrical conductor 31 in the longitudinal direction protrude from the insulating covering portion 32 and are exposed outside the insulating covering portion 32.

[0053] like Figure 5 and Figure 6 As shown, the first cylindrical conductor 31 has a first connecting portion 33 at one end and a first connecting portion 34 at the other end. In this embodiment, the first connecting portion 33 is provided at the end of the first cylindrical conductor 31 located at the front side of the vehicle 10 along its length. Furthermore, the first connecting portion 34 is provided at the end of the first cylindrical conductor 31 located at the rear side of the vehicle 10 along its length.

[0054] like Figure 5 As shown, the first connecting portion 33 is a portion of the first cylindrical conductor 31 that is flattened by flattening one end of the first cylindrical conductor 31. The first connecting portion 33 has a flat first connecting surface 33a. In this embodiment, the first connecting surface 33a is a plane parallel to the direction in which the first cylindrical conductor 31 extends.

[0055] like Figure 6 As shown, the first connecting portion 34 is a portion of the first cylindrical conductor 31 that is flattened by flattening the other end of the first cylindrical conductor 31. The first connecting portion 34 has a flat first connecting surface 34a. In this embodiment, the first connecting surface 34a is a plane parallel to the direction in which the first cylindrical conductor 31 extends.

[0056] like Figure 5As shown, the first conductive path 21 has a connection terminal 35 connected to the first connection portion 33. The connection terminal 35 is made of a conductive metal material. For example, copper-based or aluminum-based metal materials can be used as the material for the connection terminal. In this embodiment, the connection terminal 35 is a circular terminal having an annular outer connection portion 35a and a fixing portion 35b extending from the outer connection portion 35a. The fixing portion 35b of the connection terminal 35 is disposed on the first connection surface 33a. Furthermore, the fixing portion 35b is connected to the first connection portion 33 by welding, such as ultrasonic welding, thereby electrically connecting the first connection portion 33 to the connection terminal 35. Additionally, the connection terminal 35 is electrically connected to a terminal or other connection component (not shown) included in the electrical device 12. In this embodiment, the outer connection portion 35a is electrically connected to this connection component.

[0057] like Figure 6 As shown, the first conductive path 21 includes a first flexible conductor 36 that is conductive and electrically connected to the end of the first cylindrical conductor 31. The flexibility of the first flexible conductor 36 is superior to that of the first cylindrical conductor 31. In this embodiment, the first flexible conductor 36 is a covered wire having a core wire 37 made of conductors and an insulating covering portion 38 covering the outer periphery of the core wire 37. For example, the core wire 37 can be a stranded wire formed by combining multiple metal wires, or a single-core wire made of a single metal wire with a solid internal structure. The flexibility of the core wire 37 is superior to that of the first cylindrical conductor 31. For example, copper-based or aluminum-based metal materials can be used as the material for the core wire 37. The insulating covering portion 38 is made of an insulating material such as synthetic resin.

[0058] One end of the first flexible conductor 36 along its length is electrically connected to the first connecting portion 34. In the first flexible conductor 36, the insulating covering portion 38 at the end connected to the first connecting portion 34 is removed, exposing the core wire 37. Furthermore, the exposed end of the core wire 37 in the first flexible conductor 36 is disposed on the first connecting surface 34a and is electrically connected to the first connecting portion 34 by welding, such as ultrasonic welding.

[0059] The other end of the first flexible conductor 36 along its length is electrically connected to a connection terminal (not shown) of the connector 39. Additionally, the connector 39 is electrically connected to the electrical device 13.

[0060] The first conductive path 21 has a covering member 40 that covers the connection portion between the first cylindrical conductor 31 and the first flexible conductor 36. The covering member 40 is made of insulating material. In this embodiment, the covering member 40 is a heat-shrinkable tube. The covering member 40 covers the portion of the other end of the first cylindrical conductor 31 exposed from the insulating covering portion 32, and the portion of the core wire 37 exposed at one end of the first flexible conductor 36.

[0061] (Structure of the second conductive path 22)

[0062] like Figure 3 As shown, the second conductive path 22 includes a conductive cylindrical second cylindrical conductor 41. Similar to the first cylindrical conductor 31, the second cylindrical conductor 41 is a hollow cylindrical conductor. The second cylindrical conductor 41 can maintain its shape. The material used for the second cylindrical conductor 41 can be, for example, copper-based or aluminum-based metals. Furthermore, Figure 2 In the middle, the second cylindrical conductor 41 is simplified by dashed lines.

[0063] like Figure 4 As shown, the cross-sectional shape (i.e., the cross-sectional shape) obtained by cutting the second cylindrical conductor 41 using a plane perpendicular to the longitudinal direction of the second cylindrical conductor 41, that is, the axial direction of the second cylindrical conductor 41 in the direction in which the second cylindrical conductor 41 extends, can be set to any shape. In this embodiment, the cross-sectional shape of the second cylindrical conductor 41 is annular. That is, the second cylindrical conductor 41 in this embodiment is cylindrical. In addition, the cross-sectional shape of the second cylindrical conductor 41 in this embodiment is constant except for the two ends of the second cylindrical conductor 41. Therefore, except for the two ends of the second cylindrical conductor 41, the outer diameter D21 and the inner diameter D22 of the second cylindrical conductor 41 are constant in the direction in which the second cylindrical conductor 41 extends, and the thickness T21 of the second cylindrical conductor 41 is constant in the direction in which the second cylindrical conductor 41 extends.

[0064] Here, the thickness T11 of the first cylindrical conductor 31 is different from the thickness T21 of the second cylindrical conductor 41. The current value passing through the first conductive path 21 is different from the current value passing through the second conductive path 22. Furthermore, the current value passing through the first conductive path 21 is smaller than the current value passing through the second conductive path 22. Moreover, the thicknesses T11 of the first cylindrical conductor 31 and T21 of the second cylindrical conductor 41 are set to correspond to the current values ​​passing through the first conductive path 21 and the second conductive path 22, respectively. Specifically, the thickness T11 of the first cylindrical conductor 31 is set such that the cross-sectional area of ​​the first cylindrical conductor 31 can be ensured based on the current value passing through it. Similarly, the thickness T21 of the second cylindrical conductor 41 is set such that the cross-sectional area of ​​the second cylindrical conductor 41 can be ensured based on the current value passing through it. That is, in the wire harness 20, the thicker the cylindrical conductor with the larger the current value, and the larger its cross-sectional area. Furthermore, in this embodiment, the outer diameter D11 of the first cylindrical conductor 31 is equal to the outer diameter D21 of the second cylindrical conductor 41. Additionally, in this specification, "equal" for the outer diameters D11 and D21 of the first cylindrical conductor 31 and the second cylindrical conductor 41 includes not only strictly identical values, but also values ​​that differ to the extent that the same mold can be used when performing the bending process by a tube bending machine.

[0065] Furthermore, in this embodiment, the second conductive path 22, except for the thickness T21 of the second cylindrical conductor 41, has a structure substantially the same as the first conductive path 21. Therefore, in Figure 3 , Figure 5 and Figure 6 In the diagram, within the second conductive path 22, the reference numerals corresponding to the structure of the first conductive path 21 are indicated in parentheses, thus omitting the depiction of the two ends of the second conductive path 22. Figure 3 , Figure 5 and Figure 6 The thickness of the cylindrical conductor shown is the thickness of the first cylindrical conductor 31, and the thickness of the second cylindrical conductor 41 is... Figure 3 , Figure 5 and Figure 6 The cylindrical conductor shown in the figure is thick.

[0066] like Figure 4As shown, the second conductive path 22 has an insulating covering portion 42 that covers the outer peripheral surface of the second cylindrical conductor 41. The insulating covering portion 42 is the same as the insulating covering portion 32 provided in the first conductive path 21. In this embodiment, the insulating covering portion 42 is inserted into the first cylindrical conductor 31 before the second cylindrical conductor 41 is bent. Then, with the insulating covering portion 42 attached, the second cylindrical conductor 41 is bent at multiple points using a tube bending machine to form a shape corresponding to the wiring path in the vehicle 10. In addition, both ends of the second cylindrical conductor 41 in the longitudinal direction protrude from the insulating covering portion 42 and are exposed outside the insulating covering portion 42.

[0067] like Figure 5 and Figure 6 As shown, the second cylindrical conductor 41 has a second connecting portion 43 at one end and a second connecting portion 44 at the other end. In this embodiment, the second connecting portion 43 is provided at the end of the second cylindrical conductor 41 located at the front side of the vehicle 10, along its length. Furthermore, the second connecting portion 44 is provided at the end of the second cylindrical conductor 41 located at the rear side of the vehicle 10, along its length.

[0068] like Figure 5 As shown, the second connecting portion 43 has the same shape as the first connecting portion 33. Furthermore, the second connecting portion 43 has a flat second connecting surface 43a, identical to the first connecting surface 33a. In this embodiment, the second connecting surface 43a is a plane parallel to the direction in which the second cylindrical conductor 41 extends.

[0069] like Figure 6 As shown, the second connecting portion 44 has the same shape as the first connecting portion 34. Furthermore, the second connecting portion 44 has the same flat second connecting surface 44a as the first connecting portion 34. In this embodiment, the second connecting surface 44a is a plane parallel to the direction in which the second cylindrical conductor 41 extends.

[0070] like Figure 5 As shown, the second conductive path 22 has a connection terminal 45 that connects to the second connection portion 43. The connection terminal 45 is the same as the connection terminal 35 provided in the first conductive path 21. The fixing portion 35b of the connection terminal 45 is disposed on the second connection surface 43a. Moreover, the fixing portion 35b is connected to the second connection portion 43 by welding such as ultrasonic welding, thereby electrically connecting the second connection portion 43 and the connection terminal 45. In addition, the connection terminal 45 is electrically connected to a terminal or other connection component (not shown) provided in the electrical device 14. In this embodiment, the external connection portion 35a of the connection terminal 45 is electrically connected to this connection component.

[0071] like Figure 6As shown, the second conductive path 22 includes a second flexible conductor 46 that is conductive and electrically connected to the end of the second cylindrical conductor 41. The flexibility of the second flexible conductor 46 is superior to that of the second cylindrical conductor 41. In this embodiment, similar to the first flexible conductor 36, the second flexible conductor 46 is a covered wire having a core wire 37 made of conductor and an insulating covering portion 38 covering the outer periphery of the core wire 37.

[0072] One end of the second flexible conductor 46 along its length is electrically connected to the second connecting portion 44. In the second flexible conductor 46, the insulating covering portion 42 at the end connected to the second connecting portion 44 is removed, exposing the core wire 37. Furthermore, the exposed end of the core wire 37 in the second flexible conductor 46 is disposed on the second connecting surface 44a and is electrically connected to the second connecting portion 44 by welding, such as ultrasonic welding.

[0073] The other end of the second flexible conductor 46 along its length is electrically connected to a connection terminal (not shown) of the connector 47. Additionally, the connector 47 is electrically connected to the electrical device 15.

[0074] The second conductive path 22 has a covering member 48 that covers the connection portion between the second cylindrical conductor 41 and the second flexible conductor 46. Similar to the covering member 40 of the first conductive path 21, the covering member 48 in this embodiment is a heat-shrinkable tube. The covering member 48 covers the portion of the other end of the second cylindrical conductor 41 exposed from the insulating covering portion 42, and the portion of the core wire 37 exposed at one end of the second flexible conductor 46.

[0075] (Structure of external component 23)

[0076] like Figure 3 As shown, the outer casing 23 includes: a first outer casing 51 that covers the first conductive path 21; and a second outer casing 52 that is separately disposed from the first outer casing 51 and covers the second conductive path 22. Furthermore, in this embodiment, the first outer casing 51 and the second outer casing 52 are formed with substantially the same structure. Therefore, Figure 3 , Figure 5 and Figure 6 In the figure, the reference numerals for the second outer component 52, which is a structure corresponding to the first outer component 51, are indicated by brackets, thereby omitting the case where the second outer component 52 covering the second conductive path 22 is shown.

[0077] The first outer component 51 and the second outer component 52 are corrugated tubes with superior flexibility compared to the first cylindrical conductor 31 and the second cylindrical conductor 41. Furthermore, in this embodiment, both the first outer component 51 and the second outer component 52 are formed into a cylindrical shape with a circular cross-section. The inner diameter of the first outer component 51 is larger than the outer diameter of the first cylindrical conductor 31. In addition, in this embodiment, the inner diameter of the first outer component 51 is larger than the outer diameter of the insulating covering portion 32 that covers the outer peripheral surface of the first cylindrical conductor 31. Therefore, a gap exists between the outer peripheral surface of the insulating covering portion 32 and the inner peripheral surface of the first outer component 51. That is, a gap exists between the outer peripheral surface of the first cylindrical conductor 31 and the inner peripheral surface of the first outer component 51, allowing relative movement between the first outer component 51 and the first cylindrical conductor 31 in a direction orthogonal to the axial direction of the first outer component 51. Similarly, the inner diameter of the second outer component 52 is larger than the outer diameter of the second cylindrical conductor 41. Furthermore, in this embodiment, the inner diameter of the second outer component 52 is larger than the outer diameter of the insulating covering portion 42 that covers the outer peripheral surface of the second cylindrical conductor 41. Therefore, a gap exists between the outer peripheral surface of the insulating covering portion 42 and the inner peripheral surface of the second outer component 52. That is, a gap exists between the outer peripheral surface of the second cylindrical conductor 41 and the inner peripheral surface of the second outer component 52, allowing relative movement between the second outer component 52 and the second cylindrical conductor 41 in a direction orthogonal to the axial direction of the second outer component 52.

[0078] like Figure 5 and Figure 6 As shown, the first external component 51 is enclosed in the first conductive circuit 21 by housing the portion between the first connecting part 33 and the connector 39 inside.

[0079] like Figure 5 As shown, at one end of the first conductive path 21 near the first connecting portion 33, and at one end of the insulating covering portion 32 near the first connecting portion 33, one end of the first outer component 51 protrudes along its length. Therefore, the first connecting portion 33 and the connecting terminal 35 protrude from one end of the outer component 23 along its length. Furthermore, at one end of the first outer component 51 along its length and at the end near the first connecting portion 33, a waterproof component 53 is fitted to prevent liquids such as water from seeping into the interior of the first outer component 51. In this embodiment, the waterproof component 53 is vinyl tape. The waterproof component 53, as vinyl tape, is wound from one end of the first outer component 51 and extends across the insulating covering portion 32 protruding from that end. The waterproof component 53 is tightly adhered to the outer peripheral surface of the first outer component 51 and the outer peripheral surface of the insulating covering portion 32.

[0080] like Figure 6As shown, at the other end of the first conductive path 21 near the first connecting portion 34, the first outer component 51 covers the portion between the first connecting portion 34 and the first flexible conductor 36 electrically connected and the connector 47. Therefore, the portion of the insulating covering portion 38 in the first flexible conductor 36 that has not been removed, and the connector 47, are exposed from the other end of the first outer component 51 along its length. Thus, the first cylindrical conductor 31 and the first flexible conductor 36 are covered together by the first outer component 51. That is, in the first cylindrical conductor 31 and the first flexible conductor 36, the portions of each that should be covered by the outer component are covered together by a single first outer component 51.

[0081] At the other end of the first outer component 51 along its length and at the other end near the first connecting portion 34, a waterproof component 54 is fitted to prevent liquids such as water from seeping into the interior of the first outer component 51 from the other end. In this embodiment, the waterproof component 54 is the same vinyl tape as the waterproof component 53. The waterproof component 54, as vinyl tape, is wound from the other end of the first outer component 51 and extends over the insulating covering portion 38 of the first flexible conductor 36 exposed at that other end. The waterproof component 54 is liquid-tightly attached to the outer peripheral surface of the first outer component 51 and the outer peripheral surface of the insulating covering portion 38.

[0082] Furthermore, the second outer casing 52 covers the same portion of the second conductive circuit 22. Also, a waterproof component 55, identical to that of the waterproof component 53, is fitted to one end of the second outer casing 52 along its length. Additionally, a waterproof component 56, identical to that of the waterproof component 54, is fitted to the other end of the second outer casing 52 along its length.

[0083] (Method for fixing the wiring harness 20 to the vehicle 10)

[0084] like Figure 1 and Figure 2 As shown, the wiring harness 20 includes fixing members 57 that hold the first outer component 51 and the second outer component 52. The number of fixing members 57 can be set arbitrarily depending on the arrangement of the wiring harness 20 relative to the vehicle 10. In this embodiment, the wiring harness 20 includes, for example, two fixing members 57. The two fixing members 57 hold the first outer component 51 and the second outer component 52 at two separate locations along the length direction of the wiring harness 20. By fixing the fixing members 57 to the vehicle 10, the first conductive path 21 and the second conductive path 22 are fixed to the vehicle 10. In addition, in this embodiment, the second conductive path 22 is arranged in the vehicle 10 in parallel with the first conductive path 21. Moreover, the fixing members 57 hold the first outer component 51 and the second outer component 52 in a manner that maintains the distance between the first conductive path 21 and the second conductive path 22.

[0085] The function of this embodiment will be explained.

[0086] like Figure 4 As shown, the thickness T11 of the first cylindrical conductor 31 is different from the thickness T21 of the second cylindrical conductor 41. Therefore, even when the outer diameter D11 of the first cylindrical conductor 31 and the outer diameter D21 of the second cylindrical conductor 41 are equal, it is possible to make the cross-sectional area of ​​the first cylindrical conductor 31 different from that of the second cylindrical conductor 41. Thus, it is possible to ensure that the cross-sectional area of ​​the first cylindrical conductor 31 corresponds to the current value passing through it, and that the cross-sectional area of ​​the second cylindrical conductor 41 corresponds to the current value passing through it, while also making the outer diameter D11 of the first cylindrical conductor 31 equal to the outer diameter D21 of the second cylindrical conductor 41. As a result, when bending the first cylindrical conductor 31 and bending the second cylindrical conductor 41, it is possible to perform bending operations on both the first cylindrical conductor 31 and the second cylindrical conductor 41 using the same mold without changing the mold of the bending machine.

[0087] The effects of this implementation method will be explained.

[0088] (1) The wire harness 20 includes a first conductive path 21, a second conductive path 22 different from the first conductive path 21, and an outer casing 23 covering the first conductive path 21 and the second conductive path 22. The first conductive path 21 includes a first cylindrical conductor 31 with conductivity. The second conductive path 22 includes a second cylindrical conductor 41 with conductivity. The thickness T11 of the first cylindrical conductor 31 is different from the thickness T21 of the second cylindrical conductor 41.

[0089] According to this structure, the cross-sectional area corresponding to the current value passing through each of the first cylindrical conductor 31 and the second cylindrical conductor 41 can be ensured, and the outer diameter D11 of the first cylindrical conductor 31 and the outer diameter D21 of the second cylindrical conductor 41 can be set to be equal. In this way, bending processing can be performed on the first cylindrical conductor 31 and the second cylindrical conductor 41 even without changing the bending machine's mold. As a result, the manufacturability of the wire harness 20 can be improved.

[0090] Furthermore, for example, consider constructing the cylindrical conductor of the remaining conductive path with the same shape and thickness as the cylindrical conductor of the conductive path carrying the maximum current value. If this is done, the cylindrical conductor of the remaining conductive path would have an excessive cross-sectional area and an excessively large outer diameter. Therefore, the wire harness would become large. In contrast, in this embodiment, by making the thickness T11 of the first cylindrical conductor 31 different from the thickness T21 of the second cylindrical conductor 41, the cross-sectional areas of the first cylindrical conductor 31 and the second cylindrical conductor 41 are set to a size corresponding to the current value passing through each of the first cylindrical conductor 31 and the second cylindrical conductor 41. Therefore, it is possible to prevent the outer diameters D11 of the first cylindrical conductor 31 and D21 of the second cylindrical conductor 41 from being set too large. As a result, it is possible to suppress the enlargement of the wire harness 20.

[0091] Furthermore, the outer casing 23 protects the first conductive path 21 and the second conductive path 22 from flying objects such as stones and water droplets. Therefore, the durability of the wiring harness 20 can be improved.

[0092] (2) The first conductive path 21 further includes a first flexible conductor that is conductive and electrically connected to the end of the first cylindrical conductor 31. The second conductive path 22 further includes a second flexible conductor that is conductive and electrically connected to the end of the second cylindrical conductor. The flexibility of the first flexible conductor 36 is superior to that of the first cylindrical conductor 31. The flexibility of the second flexible conductor 46 is superior to that of the second cylindrical conductor 41.

[0093] According to this structure, when the vehicle 10 vibrates, the positional displacement of the components connected to both sides of the first flexible conductor 36 caused by the vibration can be absorbed in the first flexible conductor 36. In this embodiment, the positional displacement between the first cylindrical conductor 31 and the connector 39 caused by the vibration of the vehicle 10 can be absorbed in the first flexible conductor 36. Therefore, the load applied to the first connecting portion 34 and the connecting terminals of the connector 39 can be suppressed.

[0094] Similarly, when the vehicle 10 vibrates, the second flexible conductor 46 can absorb the positional displacement between the components connected to both sides of the second flexible conductor 46 caused by the vibration. In this embodiment, the second flexible conductor 46 can absorb the positional displacement between the second cylindrical conductor 41 and the connector 47 caused by the vibration of the vehicle 10. Therefore, the load applied to the second connection portion 44 and the connection terminals of the connector 47 can be suppressed.

[0095] (3) The first cylindrical conductor 31 and the first flexible conductor 36 are covered together by the first outer component 51. The second cylindrical conductor 41 and the second flexible conductor 46 are covered together by the second outer component 52.

[0096] According to this structure, the outer casing covering the first cylindrical conductor 31 and the first flexible conductor 36 is shared. That is, a single first outer casing 51 covers both the first cylindrical conductor 31 and the first flexible conductor 36. Therefore, compared to the case where separate outer casings are provided for covering the first cylindrical conductor 31 and the first flexible conductor 36, the number of components is reduced. Furthermore, since the seam between the portion of the outer casing 23 covering the first cylindrical conductor 31 and the portion covering the first flexible conductor 36 can be eliminated, it is possible to prevent liquids such as water from seeping into the interior of the outer casing 23, i.e., the interior of the first outer casing 51. As a result, it is possible to prevent liquids from adhering to the electrical connection portion between the first cylindrical conductor 31 and the first flexible conductor 36. Moreover, waterproof components such as a sheath installed at this seam can be omitted. Therefore, it is possible to prevent an increase in the number of components.

[0097] Similarly, the outer casing covering the second cylindrical conductor 41 and the second flexible conductor 46 is shared. That is, the second cylindrical conductor 41 and the second flexible conductor 46 are covered by a single second outer casing 52. Therefore, compared to the case where separate outer casings are provided for covering the second cylindrical conductor 41 and the second flexible conductor 46, the number of parts is reduced. In addition, since the seam between the portion of the outer casing 23 covering the second cylindrical conductor 41 and the portion covering the second flexible conductor 46 can be eliminated, it is possible to prevent liquids such as water from seeping into the interior of the outer casing 23, i.e., the interior of the second outer casing 52. As a result, it is possible to prevent liquids from adhering to the electrical connection portion between the second cylindrical conductor 41 and the second flexible conductor 46. Furthermore, waterproof components such as a sheath installed at this seam can be omitted. Therefore, it is possible to prevent an increase in the number of parts.

[0098] (4) The first outer component 51 is a bellows with superior flexibility compared to the first cylindrical conductor 31. The second outer component 52 is a bellows with superior flexibility compared to the second cylindrical conductor 41. A gap exists between the outer peripheral surface of the first cylindrical conductor 31 and the inner peripheral surface of the first outer component 51 (which is a bellows) to allow relative movement between the first outer component 51 and the first cylindrical conductor 31 in a direction orthogonal to the axial direction of the first outer component 51. A gap exists between the outer peripheral surface of the second cylindrical conductor 41 and the inner peripheral surface of the second outer component 52 (which is a bellows) to allow relative movement between the second outer component 52 and the second cylindrical conductor 41 in a direction orthogonal to the axial direction of the second outer component 52. The wiring harness 20 includes a fixing member 57 that holds the first outer component 51 and the second outer component 52 and fixes them to the vehicle 10.

[0099] According to this structure, since the first cylindrical conductor 31 maintains its shape, it is difficult to deform or move the first cylindrical conductor 31 when assembling the wiring harness 20 into the vehicle 10. However, within the range of the gap between the outer peripheral surface of the first cylindrical conductor 31 and the inner peripheral surface of the first outer casing 51, which is a bellows, the first cylindrical conductor 31 can move relative to the first outer casing 51 in a direction orthogonal to the axial direction of the first outer casing 51. Moreover, the first cylindrical conductor 31 is fixed to the vehicle 10 by fixing the first outer casing 51 to the vehicle 10 using the fixing member 57. Therefore, by deforming the first outer casing 51, which is a bellows and has a flexibility superior to that of the first cylindrical conductor 31, dimensional tolerances between the vehicle 10 and the first cylindrical conductor 31 can be absorbed even without moving the first cylindrical conductor 31 relative to the vehicle 10.

[0100] Similarly, since the second cylindrical conductor 41 maintains its shape, it is difficult to deform or move the second cylindrical conductor 41 when assembling the wiring harness 20 into the vehicle 10. However, within the gap between the outer peripheral surface of the second cylindrical conductor 41 and the inner peripheral surface of the second outer casing 52, which serves as a bellows, the second cylindrical conductor 41 can move relative to the second outer casing 52 in a direction orthogonal to the axial direction of the second outer casing 52. Moreover, the second cylindrical conductor 41 is fixed to the vehicle 10 by fixing the second outer casing 52 to the vehicle 10 using the fixing member 57. Therefore, by deforming the second outer casing 52, which has a greater flexibility than the second cylindrical conductor 41, even without moving the second cylindrical conductor 41 relative to the vehicle 10, dimensional tolerances between the vehicle 10 and the second cylindrical conductor 41 can be absorbed.

[0101] Alternatively, the dimensional tolerances between the vehicle 10 and the first cylindrical conductor 31, and between the vehicle 10 and the second cylindrical conductor 41, can be avoided on the side of the fixing component 57. Therefore, in order to absorb the above-mentioned dimensional tolerances, it is possible to avoid using a fixing component with a complex structure, thereby preventing the structure of the wire harness 20 from becoming complex and the manufacturing cost of the wire harness 20 from increasing.

[0102] Furthermore, since the first outer component 51 is a corrugated tube with superior flexibility compared to the first cylindrical conductor 31, it can easily follow the deformation of the first flexible conductor 36 even when covering it. Therefore, when the connector 39, which is electrically connected to the other end of the first flexible conductor 36, is connected to the electrical device 13, the deformation of the first flexible conductor 36 is not easily hindered by the first outer component 51, allowing the first flexible conductor 36 to easily deform according to the wiring path. Similarly, since the second outer component 52 is a corrugated tube with superior flexibility compared to the second cylindrical conductor 41, it can easily follow the deformation of the second flexible conductor 46 even when covering it. Therefore, when the connector 47, which is electrically connected to the other end of the second flexible conductor 46, is connected to the electrical device 15, the deformation of the first flexible conductor 36 is not easily hindered by the second outer component 52, allowing the second flexible conductor 46 to easily deform according to the wiring path.

[0103] Furthermore, in the cylindrical portion between the first connecting portion 33 and the first connecting portion 34 in the first cylindrical conductor 31, the first cylindrical conductor 31 maintains its shape. Therefore, sagging of the first conductive path 21 is suppressed. Similarly, in the cylindrical portion between the second connecting portion 43 and the second connecting portion 44 in the second cylindrical conductor 41, the second cylindrical conductor 41 maintains its shape. Therefore, sagging of the second conductive path 22 is suppressed. Thus, the number of fixing parts 57 used to secure the wiring harness 20 to the vehicle 10 can be reduced. As a result, the number of components in the wiring harness 20 can be reduced. Furthermore, since the number of fixing parts 57 is smaller, it is easier to secure the wiring harness 20 to the vehicle 10.

[0104] This improves the connectivity of the wiring harness 20 and enhances the assemblability of assembling the wiring harness 20 into the vehicle 10.

[0105] (5) The outer component 23 includes: a first outer component 51 that covers the first conductive path 21; and a second outer component 52 that is separately disposed from the first outer component 51 and covers the second conductive path 22.

[0106] According to this structure, compared to the case where the first conductive path 21 and the second conductive path 22 are covered together by an external component, the wire harness 20 can be miniaturized. For example, when the first conductive path 21 and the second conductive path 22 are covered by a cylindrical corrugated tube, the outer diameter of the corrugated tube becomes larger in order to place both the first conductive path 21 and the second conductive path 22 inside. Therefore, the wire harness becomes large. In contrast, by using the first external component 51 and the second external component 52 to cover the first conductive path 21 and the second conductive path 22 respectively as in this embodiment, the size of the wire harness 20 in the direction orthogonal to the length direction of the wire harness 20 can be reduced.

[0107] In this embodiment, the wiring harness 20 is mostly routed under the floor of the vehicle 10. Therefore, to ensure the minimum ground clearance of the vehicle body, it is preferable to reduce the size of the wiring harness 20 in the direction orthogonal to its length. Thus, compared to wiring harnesses that utilize a cylindrical corrugated tube to cover the first conductive path 21 and the second conductive path 22, the wiring harness 20 of this embodiment more easily ensures the minimum ground clearance of the vehicle body.

[0108] Furthermore, when using a cylindrical corrugated pipe to cover the first conductive circuit 21 and the second conductive circuit 22, it is considered to ensure the minimum ground clearance of the vehicle body by using a flat corrugated pipe with a racetrack-shaped cross-section. However, compared to a cylindrical corrugated pipe, a flat corrugated pipe has less freedom in the bending direction, thus reducing the freedom of the wiring path. In contrast, the first outer component 51 and the second outer component 52 of this embodiment are cylindrical corrugated pipes, so the wiring harness 20 of this embodiment can ensure the minimum ground clearance of the vehicle body and improve the freedom of the wiring path.

[0109] This embodiment can be implemented with the following modifications. This embodiment and the following variations can be combined with each other to implement them without creating technical inconsistencies.

[0110] In the above embodiment, the first connection portion 33 is electrically connected to the electrical device 12 via a connection terminal 35 that is electrically connected to the first connection portion 33. However, the first connection portion 33 may also be directly electrically connected to a connection component such as a terminal provided by the electrical device 12.

[0111] For example, in Figure 7 In the example shown, the first connecting portion 33 has a first connecting hole 33b that penetrates the first connecting portion 33 in a direction intersecting the first connecting surface 33a. In this example, the first connecting hole 33b penetrates the first connecting portion 33 in a direction orthogonal to the first connecting surface 33a. The shape of the first connecting hole 33b can be arbitrary. For example, the shape of the first connecting hole 33b as viewed from the penetrating direction can also be circular, polygonal, etc. In this example, the first connecting hole 33b is an elongated hole in the direction in which the first cylindrical conductor 31 extends. Alternatively, a second connecting hole 43b can also be provided in the second connecting portion 43, which has the same shape as the first connecting hole 33b and penetrates the second connecting portion 43 in a direction intersecting the second connecting surface 43a. Moreover, in Figure 7 In the figure, brackets indicate the second connecting portion 43 in the second cylindrical conductor 41 as a structure corresponding to the first connecting portion 33 in the first cylindrical conductor 31, and the second connecting hole 43b as a structure corresponding to the first connecting hole 33b in the first cylindrical conductor 31.

[0112] In this case, by using bolts or the like, the first connection portion 33 can be directly connected to the terminal or other connecting parts of the electrical equipment 12 mounted on the vehicle 10. Therefore, it is not necessary to separately connect the connection terminal to the connection part of the electrical equipment 12 at the end of the first cylindrical conductor 31. As a result, the number of components constituting the first conductive circuit can be reduced. In addition, since the process of connecting the connection terminal to the end of the first cylindrical conductor 31 can be eliminated, the manufacturability of the wiring harness 20 can be further improved.

[0113] Similarly, by using bolts or the like, the second connection portion 43 can be directly connected to the terminal or other connecting components provided by the electrical equipment 14 mounted on the vehicle 10. Therefore, it is not necessary to separately connect the connection terminal to the connection component of the electrical equipment 14 at the end of the second cylindrical conductor 41. As a result, the number of components constituting the second conductive circuit 22 can be reduced. In addition, since the process of connecting the connection terminal to the end of the second cylindrical conductor 41 can be eliminated, the manufacturability of the wiring harness 20 can be further improved.

[0114] Furthermore, since the first connecting hole 33b is an elongated hole extending in the direction of the first cylindrical conductor 31, dimensional tolerances between the connecting component of the electrical device 12 and the first conductive path 21 in the direction of the first cylindrical conductor 31 can be absorbed in the first connecting hole 33b. As a result, alignment between the first connecting portion 33 and the connecting component of the electrical device 12 becomes easier, thus improving the workability of connecting the first conductive path 21 and the electrical device 12. Similarly, since the second connecting hole 43b is an elongated hole extending in the direction of the second cylindrical conductor 41, dimensional tolerances between the connecting component of the electrical device 14 and the second conductive path 22 in the direction of the second cylindrical conductor 41 can be absorbed in the second connecting hole 43b. As a result, alignment between the second connecting portion 43 and the connecting component of the electrical device 14 becomes easier, thus improving the workability of connecting the second conductive path 22 and the electrical device 14.

[0115] In the above embodiment, the first conductive path 21 and the second conductive path 22 are respectively covered by the first outer component 51 and the second outer component 52. However, the outer component 23 may also cover both the first conductive path 21 and the second conductive path 22 together. For example, the outer component 23 may also be composed of a corrugated pipe. Moreover, the first conductive path 21 and the second conductive path 22 may be disposed inside the corrugated pipe.

[0116] In this case, the number of parts is reduced compared to the case where separate outer components cover the first conductive path 21 and the second conductive path 22 are provided. Furthermore, since the first conductive path 21 and the second conductive path 22 are housed within a single outer component 23, the handling of the wiring harness 20 becomes easier. Therefore, it is easier to secure the wiring harness 20 to the vehicle 10.

[0117] In the above embodiments, both the first outer component 51 and the second outer component 52 are cylindrical corrugated tubes. However, the corrugated tube used for the outer component 23 is not limited to a cylindrical shape. For example, a cylindrical corrugated tube with an elliptical or racetrack-shaped cross-section can also be used for the outer component 23. In addition, the outer component 23 is not limited to a corrugated tube, as long as it covers the first conductive path 21 and the second conductive path 22. For example, at least one of the first outer component 51 and the second outer component 52 can also be a twisted tube.

[0118] In the above embodiment, the wire harness 20 includes a fixing member 57. However, the wire harness 20 may also lack the fixing member 57.

[0119] In the above embodiment, the first cylindrical conductor 31 and the first flexible conductor 36 are covered together by the first outer casing 51. Additionally, the second cylindrical conductor 41 and the second flexible conductor 46 are covered together by the second outer casing 52. However, the first cylindrical conductor 31 and the first flexible conductor 36 may also be covered by different outer casings. Similarly, the second cylindrical conductor 41 and the second flexible conductor 46 may also be covered by different outer casings.

[0120] • In addition to heat shrink tubing, insulating vinyl tape can also be used as the covering components 40 and 48. Alternatively, the covering component 40 can be made of an insulating resin coated on the electrical connection portion between the first cylindrical conductor 31 and the first flexible conductor 36. The same applies to the covering component 48. Furthermore, the first conductive path 21 may not have the covering component 40. The second conductive path 22 may also not have the covering component 48.

[0121] In the above embodiments, both the first flexible conductor 36 and the second flexible conductor 46 are covered wires having a core wire 37 made of conductor and an insulating covering portion 38 covering the outer periphery of the core wire 37. However, the first flexible conductor 36 is not limited to covered wires; it can be any component that is conductive and has superior flexibility compared to the first cylindrical conductor 31. Similarly, the second flexible conductor 46 is not limited to covered wires; it can be any component that is conductive and has superior flexibility compared to the second cylindrical conductor 41.

[0122] For example, the first flexible conductor 36 can be a braided wire made of conductive wire braided into a cylindrical shape. In this case, the other end of the first cylindrical conductor 31 can be the same as the first connecting portion 34 in the above embodiment, or it can remain cylindrical without being flattened. When connecting the first flexible conductor 36 made of braided wire to the first connecting portion 34, the connection can be made by welding, for example, by ultrasonic welding. Alternatively, when the other end of the first cylindrical conductor 31 is cylindrical, the other end of the first cylindrical conductor 31 is inserted into the inside of the first flexible conductor 36 made of braided wire. Then, the first flexible conductor 36 is electrically connected to the outer peripheral surface of the other end of the first cylindrical conductor 31. For example, the first cylindrical conductor 31 and the first flexible conductor 36 can be electrically connected by fitting a retaining ring from the outer peripheral side of the first flexible conductor 36 to the other end of the first cylindrical conductor 31 and pressing the first flexible conductor 36. At this time, if an annular groove is formed by forging the other end of the first cylindrical conductor 31, the retaining ring can be fitted into the groove. Therefore, the positioning of the retaining ring relative to the first cylindrical conductor 31 can be easily achieved. Furthermore, the second cylindrical conductor 41 and the second flexible conductor 46 can also be modified in the same way.

[0123] In the above embodiment, the other end of the first flexible conductor 36 is connected to the connector 39. However, a connecting terminal such as a circular terminal may also be electrically connected to the other end of the first flexible conductor 36. In this case, the first cylindrical conductor 31 is electrically connected to the electrical device 13 via the first flexible conductor 36 and the connecting terminal by electrically connecting the connecting terminal or other connecting member provided with the electrical device 13. The same applies to the other end of the second flexible conductor 46, which may also be electrically connected to a connecting terminal such as a circular terminal instead of the connector 47.

[0124] In the above embodiment, the first flexible conductor 36 is connected only to one end of the first cylindrical conductor 31 in the direction in which it extends. However, the first flexible conductor 36 may also be electrically connected to one end of the first cylindrical conductor 31. In this case, a different first flexible conductor 36 may be connected to the other end of the first cylindrical conductor 31, or a connection terminal 35 may be electrically connected. Alternatively, in this case, the other end of the first cylindrical conductor 31 may be directly electrically connected to a connection component such as a terminal provided with the electrical device 13.

[0125] Similarly, in the above embodiment, the second flexible conductor 46 is connected only to one end of the two ends extending in the direction of the second cylindrical conductor 41. However, the second flexible conductor 46 may also be electrically connected to one end of the second cylindrical conductor 41. In this case, a second flexible conductor 46 different from the one connected to one end of the second cylindrical conductor 41 may be connected to the other end of the second cylindrical conductor 41, or a connection terminal 35 may be electrically connected. Alternatively, in this case, the other end of the second cylindrical conductor 41 may be directly electrically connected to a connection component such as a terminal provided with the electrical device 15.

[0126] • The first conductive path 21 may not include the first flexible conductor 36. In this case, connecting terminals 35 may be connected to both ends of the first cylindrical conductor 31 in the direction of extension. Alternatively, in this case, both ends of the first cylindrical conductor 31 may be directly electrically connected to the terminals or other connecting components of the electrical devices 12 and 13. Alternatively, the connecting terminal 35 may be electrically connected to either end of the first cylindrical conductor 31 in the direction of extension, and the other end may be directly electrically connected to the terminals or other connecting components of the electrical devices.

[0127] The same applies to the second conductive path 22, which may also omit the second flexible conductor 46. In this case, connecting terminals 45 may be connected to both ends of the second cylindrical conductor 41 in the direction of its extension. Alternatively, in this case, both ends of the second cylindrical conductor 41 may be directly electrically connected to the terminals or other connecting components of the electrical devices 14 and 15. Alternatively, the connecting terminal 45 may be electrically connected to either end of the second cylindrical conductor 41 in the direction of its extension, and the other end may be directly electrically connected to the terminals or other connecting components of the electrical devices.

[0128] In the above embodiment, circular terminals are used as connecting terminals 35 and 45. However, connecting terminals 35 and 45 are not limited to circular terminals, and can also be crimp terminals such as front-opening terminals. In addition, connecting terminals 35 and 45 are not limited to crimp terminals, and terminals of any shape such as busbars can also be used.

[0129] In the above embodiments, waterproof components 53 to 56 are all made of vinyl tape. However, waterproof components 53 and 54 only need to be able to prevent liquid from seeping into the interior of the first outer component 51 from both ends. Similarly, waterproof components 55 and 56 only need to be able to prevent liquid from seeping into the interior of the second outer component 52 from both ends. For example, waterproof component 54 may also be a cable sheath covering the outer periphery of the first flexible conductor 36 exposed from the other end of the first outer component 51 on the side of the first connecting portion 34, and liquid-tightly adhering to the outer or inner peripheral surface of that other end of the first outer component 51 and the outer peripheral surface of the connector 39. Alternatively, waterproof component 56 may be a similar cable sheath. Alternatively, for example, waterproof component 53 may also be a cable sheath liquid-tightly adhering to the outer peripheral surface of the insulating covering portion 32 exposed from one end of the first outer component 51 on the side of the first connecting portion 33 and the outer or inner peripheral surface of that end of the first outer component 51. Alternatively, the waterproof component 55 can be the same cable sheath. Furthermore, the cable harness 20 may not have waterproof components 53-56.

[0130] The insulating cover 32 is not limited to being a cylindrical shape inserted outside the first cylindrical conductor 31. For example, the insulating cover 32 may also be an insulating material coated or applied to the outer peripheral surface of the first cylindrical conductor 31. In this case, the first cylindrical conductor 31 may be bent before or after the insulating cover 32 is provided. The insulating cover 42 covering the outer peripheral surface of the second cylindrical conductor 41 may also be modified in the same way.

[0131] In the above embodiments, both the first cylindrical conductor 31 and the second cylindrical conductor 41 are formed into a cylindrical shape with a circular cross-sectional shape. However, the first cylindrical conductor 31 and the second cylindrical conductor 41 can be formed into a cylindrical shape that can maintain its shape, and do not have to be cylindrical. For example, the first cylindrical conductor 31 and the second cylindrical conductor 41 can also be formed into a flat cylindrical shape with an elliptical or racetrack-shaped cross-section.

[0132] In the above embodiment, the second conductive path 22 is arranged in parallel with the first conductive path 21 in the vehicle 10. However, the second conductive path 22 may not be arranged in parallel with the first conductive path 21. In addition, the length of the first conductive path 21, the length of the first cylindrical conductor 31, the number of bending portions based on the pipe bending machine in the first cylindrical conductor 31, the length of the second conductive path 22, the length of the second cylindrical conductor 41, and the number of bending portions based on the pipe bending machine in the second cylindrical conductor 41 can also be appropriately changed.

[0133] In the above embodiment, the wiring harness 20 has two conductive paths: a first conductive path 21 and a second conductive path 22. However, the number of conductive paths in the wiring harness 20 is not limited to this. For example, the wiring harness 20 may also have a structure with three or more conductive paths. As an example, the wiring harness may also have a third conductive path different from the first conductive path 21 and the second conductive path 22. In this case, the third conductive path has a conductive cylindrical conductor. Moreover, in this wiring harness, the conductive path with a larger current value has a thicker cylindrical conductor. Furthermore, the outer diameter of each cylindrical conductor is formed to be equal. The third conductive path electrically connects the electrical equipment 11 mounted on the vehicle 10 to each other.

[0134] This disclosure includes the following methods. Reference numerals are sometimes used to indicate several constituent elements of exemplary embodiments, not for the purpose of limitation, but as an aid to understanding. Some of the items described in the following methods may be omitted, or several items described in the methods may be selected or extracted and combined.

[0135] [1] A wire harness comprising: a conductive path; a corrugated tube covering the conductive path; and a fixing member holding the corrugated tube and fixing it to a vehicle, the conductive path having a conductive cylindrical conductor, the corrugated tube being more flexible than the cylindrical conductor, a gap existing between the outer peripheral surface of the cylindrical conductor and the inner peripheral surface of the corrugated tube, the gap allowing relative movement of the corrugated tube and the cylindrical conductor in a direction orthogonal to the axial direction of the corrugated tube.

[0136] According to this structure, since the cylindrical conductor maintains its shape, it is difficult to deform or move the cylindrical conductor when assembling the wiring harness into the vehicle. However, within this wiring harness, the cylindrical conductor can move relative to the bellows in a direction orthogonal to the axial direction of the bellows, within the gap between the outer circumferential surface of the cylindrical conductor and the inner circumferential surface of the bellows covering the cylindrical conductor. Moreover, the cylindrical conductor is fixed to the vehicle by using a fixing component to fix the bellows to the vehicle. Therefore, by deforming the bellows, which has superior flexibility compared to the cylindrical conductor, dimensional tolerances between the vehicle and the cylindrical conductor can be absorbed even without moving the cylindrical conductor relative to the vehicle.

[0137] [2] The wire harness (20) based on one or more embodiments of the present disclosure can have:

[0138] First conductive path (21);

[0139] A second conductive path (22) is disposed parallel to the first conductive path (21); and

[0140] One or more external components (23; 51, 52) loosely cover the first conductive path (21) and the second conductive path (22).

[0141] The first conductive path (21) may have a first cylindrical conductor (31) having a first radially inward surface forming a first internal space (D12), a first radially outward surface on a side opposite to the first radially inward surface, and one or more bends.

[0142] The second conductive path (22) can have a second cylindrical conductor (41) having a second radially inward surface forming a second internal space (D22), a second radially outward surface on the side opposite to the second radially inward surface, and one or more bends.

[0143] The first cylindrical conductor (31) is capable of having a first conductor cross-sectional area defined by the first radially inward surface and the first radially outward surface.

[0144] The second cylindrical conductor (41) is capable of having a second conductor cross-sectional area defined by the second radial inward surface and the second radial outward surface.

[0145] The first conductor cross-sectional area of ​​the first cylindrical conductor (31) is suitable for carrying a first current with a first current value.

[0146] The cross-sectional area of ​​the second conductor of the second cylindrical conductor (41) is suitable for carrying a second current with a second current value different from the first current value.

[0147] In a cross-sectional view that cuts across the length of the first cylindrical conductor (31) and the second cylindrical conductor (41), the shape and size of the first radially outward profile of the first cylindrical conductor (31) may be consistent with or substantially consistent with the shape and size of the second radially outward profile of the second cylindrical conductor (41).

[0148] [3] In one or more embodiments of this disclosure, the second current value is greater than the first current value, and the cross-sectional area of ​​the second conductor is greater than the cross-sectional area of ​​the first conductor.

[0149] In a cross-sectional view that cuts through the length of the first cylindrical conductor (31) and the second cylindrical conductor (41), the first radial outward of the first cylindrical conductor (31) and the second radial outward of the second cylindrical conductor (41) can have the same outline shape and the same outline size.

[0150] [4] In one or more embodiments of this disclosure, the second current value is greater than the first current value, and the cross-sectional area of ​​the second conductor is greater than the cross-sectional area of ​​the first conductor.

[0151] In a cross-sectional view that cuts across the length of the first cylindrical conductor (31) and the second cylindrical conductor (41), the cross-sectional area of ​​the first internal space (D12) of the first cylindrical conductor (31) may be larger than the cross-sectional area of ​​the second internal space (D22) of the second cylindrical conductor (41).

[0152] [5] In one or more embodiments of this disclosure, the first cylindrical conductor (31) has a first conductor thickness (T11) that serves as the shortest distance between the first radially inward surface and the first radially outward surface.

[0153] The second cylindrical conductor (41) has a second conductor thickness (T21) that serves as the shortest distance between the second radially inward surface and the second radially outward surface.

[0154] The second current value can be greater than the first current value, and the thickness of the second conductor (T21) can be greater than the thickness of the first conductor (T11).

[0155] [6] In one or more embodiments of this disclosure, the first cylindrical conductor (31) and the second cylindrical conductor (41) may be made of the same conductive metal.

[0156] [7] In one or more embodiments of this disclosure, the first cylindrical conductor (31) and the second cylindrical conductor (41) may be made of different conductive metals.

[0157] [8] In one or more embodiments of this disclosure, the one or more outer components (23; 51, 52) are capable of forming gaps or fluid passages on the inner side of the outer component and on the first radially outward side of the first cylindrical conductor (31) and the second radially outward side of the second cylindrical conductor (41) to allow fluid, which can be used as air, to flow along the length of the outer component.

[0158] [9] In one or more embodiments of this disclosure, the wiring harness (20) may have a fixing member (57) that contacts the outer surface of the one or more outer components (23; 51, 52) and securely holds the one or more outer components (23; 51, 52).

[0159] Explanation of reference numerals in the attached figures

[0160] 10 vehicles

[0161] 11 Electrical equipment

[0162] 12 Electrical equipment

[0163] 13 Electrical equipment

[0164] 14 Electrical equipment

[0165] 15 Electrical equipment

[0166] 20 wire harness

[0167] 21 First conductive path

[0168] 22 Second conductive path

[0169] 23 External components

[0170] 31 First cylindrical conductor

[0171] 32 Insulation Covering Part

[0172] 33 First connecting part

[0173] 33a First connecting surface

[0174] 33b First connecting hole

[0175] 34 First connecting part

[0176] 34a First connecting surface

[0177] 35 Connecting terminals

[0178] 35a External connection part

[0179] 35b Fixing part

[0180] 36 First Soft Conductor

[0181] 37-core wire

[0182] 38 Insulation Covering Part

[0183] 39 Connectors

[0184] 40 Covered components

[0185] 41 Second cylindrical conductor

[0186] 42 Insulation Covering

[0187] 43 Second connecting part

[0188] 43a Second connecting surface

[0189] 43b Second connecting hole

[0190] 44 Second connecting part

[0191] 44a Second connecting surface

[0192] 45 Connecting terminals

[0193] 46 Second Soft Conductor

[0194] 47 Connectors

[0195] 48 Covered components

[0196] 51 First external component

[0197] 52 Second external component

[0198] 53 Waterproof components

[0199] 54 Waterproof components

[0200] 55 Waterproof components

[0201] 56 Waterproof components

[0202] 57. Fixing components

[0203] D11 outer diameter

[0204] D12 inner diameter

[0205] D21 outer diameter

[0206] D22 inner diameter

[0207] T11 thickness

[0208] T21 thickness

Claims

1. A wire harness comprising: a first conductive path; a second conductive path different from the first conductive path; a first outer member covering the first conductive path; a second outer member provided separately from the first outer member and covering the second conductive path, the first conductive path comprising a first tubular conductor having a tubular shape and electrical conductivity, a first insulating covering portion covering an outer peripheral surface of the first tubular conductor, and a first flexible conductor having electrical conductivity and electrically connected to an end portion of the first tubular conductor, the second conductive path comprising a second tubular conductor having a tubular shape and electrical conductivity, a second insulating covering portion covering an outer peripheral surface of the second tubular conductor, and a second flexible conductor having electrical conductivity and electrically connected to an end portion of the second tubular conductor, the first tubular conductor and the second tubular conductor being capable of maintaining a shape, the first tubular conductor and the second tubular conductor each having one or more bent portions, an outer diameter of the first tubular conductor being equal to an outer diameter of the second tubular conductor, a thickness of the first tubular conductor being different from a thickness of the second tubular conductor, an inner diameter of the first outer member being larger than an outer diameter of the first insulating covering portion, so that a gap is present between an outer peripheral surface of the first insulating covering portion and an inner peripheral surface of the first outer member, the gap allowing relative movement of the first outer member and the first tubular conductor in a direction orthogonal to an axial direction of the first outer member, an inner diameter of the second outer member being larger than an outer diameter of the second insulating covering portion, so that a gap is present between an outer peripheral surface of the second insulating covering portion and an inner peripheral surface of the second outer member, the gap allowing relative movement of the second outer member and the second tubular conductor in a direction orthogonal to an axial direction of the second outer member, the first outer member being a bellows having superior flexibility to the first tubular conductor, the first flexible conductor having superior flexibility to the first tubular conductor, the second outer member being a bellows having superior flexibility to the second tubular conductor, the second flexible conductor having superior flexibility to the second tubular conductor, the first tubular conductor and the first flexible conductor being covered together by the first outer member, the second tubular conductor and the second flexible conductor being covered together by the second outer member.

2. The wire harness according to claim 1, wherein the wire harness comprises a fixing member that holds the bellows and is fixed to a vehicle.

3. The wire harness according to claim 1 or claim 2, wherein the first tubular conductor has a first connecting portion having a flat first connecting surface at an end portion of the first tubular conductor, the second tubular conductor has a second connecting portion having a flat second connecting surface at an end portion of the second tubular conductor, the first connecting portion has a first connecting hole that penetrates the first connecting portion in a direction intersecting the first connecting surface, and the second connecting portion has a second connecting hole that penetrates the second connecting portion in a direction intersecting the second connecting surface.

4. The wire harness according to claim 1, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The first cylindrical conductor has a thickness corresponding to a current value of a current passing through the first conductive path, and the second cylindrical conductor has a thickness corresponding to a current value of a current passing through the second conductive path, the current value of the current passing through the first conductive path being different from the current value of the current passing through the second conductive path.

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