Wiring structure of wire harness

Abstract

The purpose of the present invention is to provide a wiring structure for a wire harness capable of improving assemblability to a vehicle. A wiring structure (1) for a wire harness is provided with: a flat wiring material (10) that has flexibility and extends in a vehicle width direction (Y); and a pair of elastic members (20) extending along the flat wiring material (10) and holding the flat wiring material (10), in which the flat wiring material (10) is fixed to a dash panel (120) that separates an engine compartment (130) of the vehicle (100) from the interior of the vehicle compartment in a state of being sandwiched between the pair of elastic members (20).

Description

Technical Field

[0001] The invention relates to a wiring structure of a wire harness. Background Art

[0002] As a technology related to a conventional wiring harness routing structure, for example, Patent Document 1 discloses a wiring harness routing structure including: a flexible flat wiring material; a protector for protecting the flat wiring material; and a fixing member for fixing the protector to a mounting portion of a vehicle.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2012-055105 Summary of the invention

[0006] Technical problem that the invention aims to solve

[0007] However, the wiring structure of the wire harness described in Patent Document 1 has room for further improvement, for example, in terms of improving the ease of assembly into a vehicle.

[0008] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wiring structure of a wire harness capable of improving assembly efficiency in a vehicle.

[0009] Technical solutions to the problem

[0010] In order to achieve the above-mentioned purpose, the wiring structure of the wiring harness involved in the present invention includes: a flat wiring material, which is flexible; and a pair of elastic components, which extend along the flat wiring material and hold the flat wiring material, wherein the flat wiring material is fixed to a front panel in a state of being sandwiched between the pair of elastic components, and the front panel separates the engine room of the vehicle from the interior of the vehicle.

[0011] Effects of the Invention

[0012] In the wiring harness routing structure of the present invention, the flat wiring material constituting the wiring harness can be assembled to the vehicle by fixing the flat wiring material to the front panel of the vehicle in a state where the flat wiring material is sandwiched between a pair of elastic members and the two members are integrated. As a result, the wiring harness routing structure of the wiring harness has the effect of improving the assembly performance to the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exemplary perspective view of a vehicle to which the wiring structure of the wire harness according to the embodiment is applied.

[0014] Figure 2It is an exemplary cross-sectional view of a vehicle to which the wiring structure of the wire harness according to the embodiment is applied.

[0015] Figure 3 It is a schematic cross-sectional view of a wiring structure of a wire harness according to the embodiment.

[0016] Figure 4 This is an exemplary cross-sectional view of the wiring structure of the wire harness according to the embodiment, and is a view showing a state in which the flat wiring material and a pair of elastic members are removed from the dash panel.

[0017] Figure 5 It is an exemplary perspective view of the routing structure of the wire harness according to the embodiment.

[0018] Figure 6 This is an exemplary perspective view of the wiring structure of the wire harness according to the embodiment, and is a view of a state in which a part of the second sound absorbing material in a pair of elastic members is cut away.

[0019] Explanation of symbols

[0020] 1 Wiring structure of wiring harness

[0021] 10 Flat wiring material

[0022] 20 Elastic components

[0023] 20A first sound absorbing material (sound absorbing material)

[0024] 20B Second sound absorbing material (sound absorbing material)

[0025] 30 Bonding

[0026] 100 Vehicles

[0027] 110 Body panels

[0028] 111 Groove

[0029] 120 Front panel

[0030] 121 recess

[0031] 125 Front panel body

[0032] 130 Engine Room

[0033] 140 Dashboard

[0034] 150 air conditioning units

[0035] S Space DETAILED DESCRIPTION

[0036] Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings. In addition, the present invention is not limited to the embodiments described below. In addition, the constituent elements of the embodiments described below include elements that can and are easily replaced by those skilled in the art, or substantially the same elements. In addition, in this specification, ordinal numbers are only used to distinguish between elements, parts, parts, positions, directions, etc., and do not indicate order or priority.

[0038] Figure 1 It is a perspective view of a vehicle 100 to which the wiring harness routing structure 1 according to the embodiment is applied. Figure 1 The wiring harness wiring structure 1 of the present embodiment shown is applied to a vehicle 100, and is used for connecting various devices mounted on the vehicle 100 and for power supply and signal communication. The wiring harness wiring structure 1 of the present embodiment is provided, for example, on a dash panel 120 of the vehicle 100. The dash panel 120 is a partition wall that separates an engine room 130 of the vehicle 100 from the interior of the vehicle (passenger cabin), and constitutes a structural member (frame member) of the vehicle 100.

[0039] Here, in the present embodiment, the dash panel 120 is configured to include, for example, a dash panel body 125 made of metal and a body panel 110 made of resin. In addition, in the present embodiment, the dash panel body 125 is integrally formed with the peripheral panel 115 of the engine room 130 and the like. As a result, the rigidity and strength of the dash panel 120 can be improved, and the body panel 110 can be formed of a resin molded product. That is, in the present embodiment, the body panel 110 is formed of a component different from the dash panel body 125. The body panel 110 is, for example, provided in a recess 121 formed in the dash panel body 125, and constitutes a part of the dash panel 120 together with the dash panel body 125.

[0040] In addition, in the following description, the first direction among the mutually intersecting first direction, second direction and third direction is referred to as the "vehicle front-rear direction X", the second direction is referred to as the "vehicle width direction Y", and the third direction is referred to as the "vehicle height direction Z". Here, the vehicle front-rear direction X, the vehicle width direction Y and the vehicle height direction Z are substantially orthogonal to each other. The vehicle front-rear direction X is typically equivalent to the entire length direction of the vehicle 100, the stacking direction of the wiring structure 1 of the wiring harness, etc. The vehicle width direction Y is typically equivalent to the entire width direction of the vehicle 100, the length direction (extension direction) of the wiring structure 1 of the wiring harness, etc. The vehicle height direction Z is typically equivalent to the vehicle height direction of the vehicle 100, the short side direction of the wiring structure 1 of the wiring harness, etc. In addition, unless otherwise specified, the directions used in the following description are described as directions in a state where the wiring structure 1 of the wiring harness is assembled in the vehicle 100.

[0041] Figure 2 1 is a cross-sectional view of a vehicle 100 to which the wiring harness wiring structure 1 is applied. Figure 2 As shown, the wiring harness routing structure 1 of the present embodiment is, for example, provided inside the dashboard 140 of the vehicle 100. The dashboard 140 is an interior panel arranged in the front of the vehicle interior along the vehicle width direction Y so as to face the driver's seat and the passenger seat of the vehicle 100. An air conditioning unit 150 and a reinforcement member 160 as a reinforcement member extending along the vehicle width direction Y are provided inside the dashboard 140. Flanges are respectively connected to both ends of the reinforcement member 160, and one of the pair of flanges is fixed to the left side of the vehicle body 100, and the other is fixed to the right side of the vehicle body 100.

[0042] like Figure 2 As shown, the wiring structure 1 of the wire harness of the present embodiment includes, for example, a flat wiring material 10, a pair of elastic members 20, and a groove 111 formed in the resin body panel 110 of the dash panel 120. The flat wiring material 10 and the pair of elastic members 20 are arranged in a space S between the air conditioning unit 150 and the body panel 110 in the instrument panel 140, for example.

[0043] The groove 111 is a recessed portion formed in the vehicle body panel 110 and extends in the vehicle width direction Y. The groove 111 is recessed from the inner surface of the vehicle body panel 110 toward the front side in the vehicle front-rear direction X and is open toward the rear side in the vehicle front-rear direction X. The groove 111 has, for example, a shape that matches the outer diameter shape of the flat wiring material 10 and serves as a positioning portion when the flat wiring material 10 is installed. The groove 111 is, for example, arranged across the first ECU 40A (see FIG. 1 ) of the control device 40 provided at one end in the vehicle width direction Y. Figure 1 ) extends integrally along the vehicle width direction Y in a manner between the second ECU 40E of the control device 40 set at the other end portion in the vehicle width direction Y.

[0044] In the flat wiring material 10, connectors 11 are provided at both ends in the vehicle width direction Y, respectively (see Figure 5 and Figure 6 ). Moreover, the flat wiring material 10 is connected to the first ECU 40A of the control device 40 via a connector 11, and is connected to the second ECU 40E of the control device 40 via another connector 11. In addition, although the first ECU 40A and the second ECU 40E here are typically regional ECUs that uniformly control the devices in the surrounding area (ゾーン) of the front panel 120, they are not limited to this. In addition, a plurality of devices 40B to 40D such as other ECUs of the control device 40 are provided between the first ECU 40A and the second ECU 40E, and one of the devices 40C is, for example, the above-mentioned air conditioning unit 150. In addition, in Figure 1 In the figure, for the sake of convenience, illustration of a pair of elastic members 20, the instrument panel 140, etc. is omitted.

[0045] Figure 3 is a cross-sectional view of a wiring structure 1 of a wiring harness, Figure 4 FIG. 1 is a cross-sectional view of the wiring structure 1 of the wire harness, showing a state where the flat wiring material 10 and a pair of elastic members 20 have been removed from the dash panel 120. Figure 3 and Figure 4 As shown, the pair of elastic members 20 holds the flat wiring material 10 by sandwiching the flat wiring material 10 therebetween, for example. The pair of elastic members 20 extend along the flat wiring material 10 and are formed into a rectangular sheet (thin plate) that is horizontally long in the vehicle width direction Y. The length of the pair of elastic members 20 along the vehicle width direction Y is, for example, substantially the same as the length of the groove portion 111 and the flat wiring material 10 along the vehicle width direction Y. The pair of elastic members 20 are stacked along the vehicle front-rear direction X.

[0046] The pair of elastic members 20 is configured to include, for example, a first sound absorbing material 20A on the vehicle body panel 110 side and a second sound absorbing material 20B on the air conditioning unit 150 side (inside the vehicle interior). The first sound absorbing material 20A and the second sound absorbing material 20B have a sound-absorbing function of suppressing the sound of the engine room 130 on the outside of the vehicle body panel 110 from entering the vehicle interior. For example, the first sound absorbing material 20A and the second sound absorbing material 20B are bonded together by an adhesive material such as hot melt bonding, and based on this, the flat wiring material 10 arranged between the first sound absorbing material 20A and the second sound absorbing material 20B is held by the first sound absorbing material 20A and the second sound absorbing material 20B.

[0047] The first sound absorbing material 20A is formed into a substantially flat sheet, for example, similarly to the second sound absorbing material 20B. Therefore, in a state where the flat wiring material 10 is sandwiched between the first sound absorbing material 20A and the second sound absorbing material 20B, the first sound absorbing material 20A is formed with a recessed portion 21 that is recessed by an amount corresponding to the thickness of the flat wiring material 10. It should be noted that the first sound absorbing material 20A is not limited to this example, and for example, the recessed portion 21 that accommodates the flat wiring material 10 may be formed in advance in a state where the flat wiring material 10 is not sandwiched between the first sound absorbing material 20A and the second sound absorbing material 20B.

[0048] The first sound absorbing material 20A and the second sound absorbing material 20B are formed, for example, by forming a paper foam material obtained by foaming paper into a sheet. The paper foam material is formed by mixing corn starch and polypropylene (PP) and the like in paper particles and foaming them with water vapor. The first sound absorbing material 20A and the second sound absorbing material 20B as the paper foam material have a labyrinth structure having semi-independent bubbles and are excellent in absorbing the sound energy generated by the membrane vibration. In addition, the first sound absorbing material 20A and the second sound absorbing material 20B as the paper foam material have low air permeability and excellent heat insulation.

[0049] In addition, the second sound absorbing material 20B may be a material different from the first sound absorbing material 20A, for example, polyvinyl chloride (PVC) or polypropylene (PP) having excellent weather resistance and strength, formed into a sheet. The first sound absorbing material 20A and the second sound absorbing material 20B are formed to be thicker than the dimension in the thickness direction (vehicle front-rear direction X) of the flat wiring material 10 in a state of being attached to each other. In this way, the wiring structure 1 of the wire harness of the present embodiment includes the first sound absorbing material 20A and the second sound absorbing material 20B having excellent sound absorbing properties, so that the noise of the engine room 130 can be suppressed from entering the vehicle interior. In addition, the first sound absorbing material 20A and the second sound absorbing material 20B also have excellent heat insulation properties.

[0050] That is, the wiring structure 1 of the wire harness of the present embodiment includes the first sound absorbing material 20A and the second sound absorbing material 20B formed of a paper foam material having excellent sound absorbing and heat insulating properties in a sheet shape, so that it is not necessary to stack a plurality of sound absorbing materials and heat insulating materials, and it is possible to suppress the intrusion of noise and heat from the engine room 130 of the vehicle 100 with the minimum amount required. That is, the flat wiring material 10 constituting the wire harness can be assembled along a predetermined wiring path while suppressing an increase in weight and manufacturing cost, and appropriate sound insulating performance and heat insulating performance can be ensured.

[0051] In addition, the first sound absorbing material 20A and the second sound absorbing material 20B are fixed to the vehicle body panel 110 via the adhesive portion 30 in a state where the flat wiring material 10 is sandwiched therebetween. The adhesive portion 30 is, for example, an adhesive, a double-sided tape, etc., and is attached to the back surface 20a of the first sound absorbing material 20A on the vehicle body panel 110 side. In addition, the surface 20b of the first sound absorbing material 20A on the side opposite to the back surface 20a is attached to the back surface 20a of the second sound absorbing material 20B via an adhesive. The width of the first sound absorbing material 20A and the second sound absorbing material 20B in the vehicle height direction Z is set to be larger than the width of the groove portion 111 and the flat wiring material 10 in the vehicle height direction Z. That is, the first sound absorbing material 20A and the second sound absorbing material 20B are configured to include a portion overlapping with the peripheral edge portion of the groove portion 111 in the vehicle body panel 110 in the vehicle front-rear direction X.

[0052] Figure 5 is a perspective view of a wiring structure 1 of a wiring harness. Figure 6 FIG. 1 is a perspective view of the wiring structure 1 of the wire harness, in which a part of the second sound absorbing material 20B in the pair of elastic members 20 is cut away. Figure 5 and 6As shown, the flat wiring material 10 is a wiring material constituting a wiring harness, and is composed of, for example, a flexible printed circuit (FPC, Flexible Printed Circuits), a flexible flat cable (FFC, Flexible Flat Cable), etc. The flat wiring material 10 is a thin and flexible flat wiring material. The flat wiring material 10 is formed as a whole in a rectangular plate shape that is horizontally long in the vehicle width direction Y. The flat wiring material 10 is configured to include, for example, a base film, a wiring pattern, and a cover layer.

[0053] The base film is a substrate having excellent flexibility and defining the overall shape of the flat wiring material 10. The base film is formed of, for example, a polyimide resin having excellent heat resistance. The wiring pattern is, for example, laminated on the surface (mounting surface) of the base film to form a plurality of conductor circuit portions (pattern layers). The wiring pattern is formed of a conductive material such as copper foil and is printed on the surface of the base film as a printed circuit body. The cover layer is laminated on the entire surface of the base film via an adhesive not shown in the figure, and functions as a protective layer for protecting the conductor circuit portion of the wiring pattern.

[0054] In addition, the plurality of conductor circuit portions formed by the wiring pattern can function as any of the signal circuits, signal GND circuits, power grounding circuits, and the like. The signal circuit is, for example, a circuit for transmitting communication signals between the control device 40 and various electronic devices in the vehicle 100 and other on-board devices. The signal GND circuit is a circuit that is attached to the signal circuit and is conducted between the on-board devices, and that makes the potential that serves as the circuit operation reference consistent between the on-board devices. The power grounding circuit is a circuit that grounds the power supply system of the on-board device.

[0055] The flat wiring material 10 has connectors 11 at both ends in the vehicle width direction Y. The pair of connectors 11 are exposed through the through-holes 22 provided in the second sound absorbing material 20B. The through-holes 22 are openings that penetrate the second sound absorbing material 20B along the vehicle front-rear direction X, and are formed as long holes larger than the outer shape of the connectors 11. The pair of connectors 11 are attached to the second sound absorbing material 20B in a state where the through-holes 22 penetrate, and protrude toward the rear side (control device 40 side) in the vehicle front-rear direction X. The pair of connectors 11 can be connected to the control device side connector of the above-mentioned control device 40, respectively.

[0056] The connector 11 is configured to be mated with the control device side connector by, for example, fastening the control device 40 to the vehicle body panel 110 using a fastening member. Specifically, in the present embodiment, a bolt of the fastening member protrudes from the vehicle body panel 110 toward the rear side (control device 40 side) in the vehicle front-rear direction X, and is fastened with a nut while being inserted into a through hole formed in the control device 40. Thus, the bolt of the fastening member functions as an auxiliary bolt when the connector 11 and the control device side connector are mated, and the mating operation of the connector 11 and the control device side connector can be performed more easily or more smoothly. For example, a pair of bolts of the fastening member are provided on both sides of the vehicle height direction Z in a manner that sandwiches the connector 11 and the control device side connector.

[0057] In addition, a wiring module 12 composed of, for example, a bundle of high-speed communication lines, a bundle of electric wires, etc. is stacked on the flat wiring material 10. The wiring module 12 has connectors 13 at both ends in the vehicle width direction Y. The pair of connectors 13 are exposed through the through-holes 22 provided in the second sound absorbing material 20B together with the pair of connectors 11 of the flat wiring material 10. The pair of connectors 13 are installed on the second sound absorbing material 20B in a state of penetrating the through-holes 22, and protrude toward the rear side (control device 40 side) in the vehicle front-rear direction X. The pair of connectors 13 can be connected to the control device side connector of the above-mentioned control device 40 together with the pair of connectors 11 of the flat wiring material 10.

[0058] As described above, the wiring structure 1 of the wiring harness of the present embodiment is constructed to include a flat wiring material 10. Therefore, compared with a wiring harness formed by bundling various conventional electric wires, the wiring harness composed of the flat wiring material 10 is lightweight. Here, in the case where the wiring structure 1 of the wiring harness described above is set in the vehicle 100, it is also assumed that the length of the wiring harness is about 1000 mm. If a wiring harness of such a length is entirely composed of electric wires, the overall weight of the wiring harness may increase. In this regard, according to the present embodiment, the wiring harness is constructed to include a flat wiring material 10, so that the increase in the overall weight of the wiring harness can be suppressed, and the enlargement of the wiring harness can be coped with.

[0059] In addition, usually, the wiring harness formed by bundling various electric wires is manufactured by manual work of the operator. In contrast, the flat wiring material 10 can be manufactured by automation, so by forming the wiring harness with the flat wiring material 10, the manufacturing man-hours of the wiring harness can also be reduced. In addition, usually, for a large wiring harness formed by bundling various electric wires, it is difficult to transport it due to its weight. In contrast, according to the present embodiment, the flat wiring material 10 also has advantages such as shortening the manufacturing days of the wiring harness itself or the vehicle 100 using the wiring harness, or making the manufacturing site less restricted.

[0060] As described above, the wiring structure 1 of the wire harness of the present embodiment includes: the flat wiring material 10 having flexibility; and a pair of elastic members 20 extending along the flat wiring material 10 and holding the flat wiring material 10, and the flat wiring material 10 is fixed to the dash panel 120 that partitions the engine room 130 of the vehicle 100 from the interior of the vehicle in a state of being sandwiched between the pair of elastic members 20. According to this structure, the wiring structure 1 of the wire harness can be assembled to the vehicle 100 by fixing the flat wiring material 10 constituting the wire harness to the dash panel 120 of the vehicle 100 in a state of sandwiching the flat wiring material 10 between the pair of elastic members 20 and integrating them. As a result, the wiring structure 1 of the wire harness can improve the assembly property to the vehicle 100.

[0061] In addition, in the wiring harness routing structure 1 of the present embodiment, the pair of elastic members 20 is composed of the first sound absorbing material 20A and the second sound absorbing material 20B for suppressing the sound of the engine room 130 from entering the vehicle interior. According to this structure, the wiring harness routing structure 1 can obtain a desired noise reduction effect by the first sound absorbing material 20A and the second sound absorbing material 20B, for example, and can suppress the wear caused by the interference between the first sound absorbing material 20A and the second sound absorbing material 20B and the flat wiring material 10.

[0062] In the wiring structure 1 of the wire harness of the present embodiment, the flat wiring material 10 is arranged in the space S between the air conditioning unit 150 and the dash panel 120 in the instrument panel 140 of the vehicle 100. According to this structure, the wiring structure 1 of the wire harness can be arranged in the limited space S between the air conditioning unit 150 and the dash panel 120 in a state where the flat wiring material 10 constituting the wire harness is sandwiched between a pair of elastic members 20, thereby further improving the protection and further reducing the thickness.

[0063] In addition, the wiring harness routing structure 1 of the present embodiment further includes a groove portion 111 formed in the dash panel 120 and having a shape that matches the outer shape of the flat wiring material 10. According to this structure, the wiring harness routing structure 1 can position the flat wiring material 10 relative to the dash panel 120 by the groove portion 111, and thus can more easily, more smoothly, or more accurately perform the installation work of the flat wiring material 10 and the pair of elastic members 20 relative to the dash panel 120. In addition, for example, by arranging the first sound absorbing material 20A on the dash panel 120 side of the pair of elastic members 20 in a state where at least a portion is buried in the groove portion 111, the entirety of the wiring harness including the flat wiring material 10 and the pair of elastic members 20 can be further thinned.

[0064] In the wiring harness routing structure 1 of the present embodiment, the dash panel 120 is configured to include: a metal dash panel body 125 provided with a recessed portion 121; and a resin vehicle body panel 110 provided in the recessed portion 121 and constituting a part of the dash panel 120 together with the dash panel body 125, and a groove portion 111 is formed in the vehicle body panel 110. According to this configuration, the wiring harness routing structure 1 can relatively easily form the groove portion 111 by, for example, the resin vehicle body panel 110.

[0065] In addition, in the wiring harness routing structure 1 of the present embodiment, the pair of elastic members 20 are fixed to the dash panel 120 via the adhesive portion 30 in a state where the flat wiring material 10 is sandwiched therebetween. According to this structure, the wiring harness routing structure 1 can eliminate (reduce) fixing members such as bolts that fix the pair of elastic members 20 to the dash panel 120 through the adhesive portion 30, for example, and can further reduce the overall thickness of the wiring harness including the flat wiring material 10, the pair of elastic members 20, and the adhesive portion 30.

[0066] In addition, although the present embodiment illustrates a case where the groove 111 is formed in the resin vehicle body panel 110 of the dash panel 120, the present invention is not limited to this example, and for example, the groove 111 may be provided in the metal dash panel body 125 of the dash panel 120. In addition, in the present embodiment, the present invention illustrates a case where the pair of elastic members 20 are composed of the first sound absorbing material 20A and the second sound absorbing material 20B having a sound absorbing function, the present invention is not limited to this example, and for example, they may be composed of the elastic members 20 having no sound absorbing function.

[0067] In addition, the wiring harness routing structure 1 of the present embodiment may be, for example, a vehicle body panel 110 having a groove portion 111 itself that constitutes a part of the wiring harness routing structure 1. That is, in addition to the flat wiring material 10 and the pair of elastic members 20, the wiring harness routing structure 1 may include the resin vehicle body panel 110 (the vehicle body panel 110 disposed in the recess 121 formed in the metal dash panel body 125) itself.

[0068] The above examples illustrate the embodiments of the present invention, but the above embodiments are only examples and are not intended to limit the scope of the invention. The above embodiments can be implemented in various other ways, and various omissions, substitutions, combinations, and changes can be made without departing from the scope of the invention. In addition, the specifications of various structures, shapes, etc. (structure, type, direction, form, size, length, width, thickness, height, quantity, configuration, position, material, etc.) can be appropriately changed and implemented.

Claims

1. A wiring harness structure, characterized in that: have: Flat wiring material with flexibility; as well as a pair of elastic members extending along the flat wiring material and holding the flat wiring material, The flat wiring material is fixed to a dash panel that partitions an engine room and a vehicle interior of a vehicle in a state of being sandwiched between the pair of elastic members.

2. The wiring harness routing structure according to claim 1, wherein: The pair of elastic members are formed of a sound absorbing material that suppresses the sound of the engine room from entering the interior of the vehicle compartment.

3. The wiring harness routing structure according to claim 1 or 2, wherein: The flat wiring material is arranged in a space between an air conditioning unit and the dash panel in an instrument panel of the vehicle.

4. The wiring harness routing structure according to claim 1 or 2, wherein: The wiring structure has a groove portion formed in the dash panel, and a shape of the groove portion is consistent with an outer shape of the flat wiring material.

5. The wiring harness routing structure according to claim 4, wherein: The dash panel includes: a metal dash panel body having a recessed portion; and a resin vehicle body panel, which is disposed in the recessed portion and constitutes a part of the dash panel together with the dash panel body. The groove portion is formed in the vehicle body panel.

6. The wiring harness routing structure according to claim 1 or 2, wherein: The pair of elastic members are fixed to the dash panel via an adhesive portion in a state where the flat wiring material is sandwiched therebetween.

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