Wiring structure of wiring harness

Abstract

The present invention aims to provide a wiring harness structure capable of improving assembly performance in a vehicle. The wiring harness structure (1) comprises: a groove (111) formed in a dash panel (110) as an example of a vehicle body component of a vehicle (100); a flat wiring member (10) accommodated in the groove (111) of the dash panel (110), having flexibility and extending in the vehicle width direction (Y); and a cover member (20) that closes the groove (111) when the flat wiring member (10) is accommodated in the groove (111) of the dash panel (110).

Description

Technical Field

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

[0002] As a technology related to the conventional wiring harness structure, for example, Patent Document 1 discloses a wiring harness structure including: a flexible flat wiring member; a protector for protecting the flat wiring member; 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 described above still has room for further improvement, for example, in terms of improving 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 comprises: a groove portion, which is formed in a body part of a vehicle; a flat wiring member, which is accommodated in the groove portion of the body part and has flexibility; and a cover member, which closes the groove portion when the flat wiring member is accommodated in the groove portion of the body part.

[0011] Effects of the Invention

[0012] In the wiring harness routing structure of the present invention, the flat wiring member is accommodated in the groove formed in the vehicle body member, and the groove is closed by the cover member, so that the flat wiring member constituting the wiring harness can be assembled to the vehicle. As a result, the wiring harness routing structure has the effect of improving the assembly performance to the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is an exemplary perspective view of the wiring structure of the wire harness according to the embodiment.

[0015] Figure 3 It is an exemplary exploded perspective view of the wiring structure of the wire harness according to the embodiment.

[0016] Figure 4 It is an exemplary cross-sectional view of the routing structure of the wire harness according to the embodiment.

[0017] Description of reference numerals:

[0018] 1 Wiring structure of wiring harness

[0019] 10 Flat wiring components

[0020] 10a One end

[0021] 10b The other end

[0022] 20 Cover parts

[0023] 30 Elastic components

[0024] 30A sound absorbing material

[0025] 40 Bonding part

[0026] 100 Vehicles

[0027] 110 front panel (body parts)

[0028] 111 Groove

[0029] 111a Bottom DETAILED DESCRIPTION

[0030] Hereinafter, the 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.

[0031] [Implementation Method]

[0032] Figure 1 It is a perspective view of a vehicle 100 to which the wiring harness routing structure 1 according to the embodiment can be applied. Figure 1 The wiring structure 1 of the wiring harness 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 structure 1 of the wiring harness of the present embodiment is provided, for example, on a dash panel 110 as an example of a body member of the vehicle 100. The dash panel 110 is a partition wall that separates the engine room of the vehicle 100 from the interior of the vehicle (cab), and constitutes a structural member (frame member) of the vehicle 100.

[0033] In addition, a reinforcing member 120 is provided above the wiring harness routing structure 1 and is provided inside the instrument panel of the vehicle 100. The reinforcing member 120 is, for example, a metal hollow tube and is a reinforcing member extending in the vehicle width direction. Flanges 121 are bonded to both ends of the reinforcing member 120. One of the pair of flanges 121 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.

[0034] 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.

[0035] In addition, unless otherwise specified, the directions used in the following description are described in terms of directions in a state where the wiring harness routing structure 1 is assembled in the vehicle 100. In addition, in the following description, for convenience, the stacking direction of the wiring harness routing structure 1, that is, the opening direction of the groove portion 111 described later (the plate thickness direction of the cover member 20) is described along the vehicle front-rear direction X, but the stacking direction of the wiring harness routing structure 1 may be along an inclined direction between the vehicle front-rear direction X and the vehicle height direction Z.

[0036] Figure 2 is a perspective view of a wiring structure 1 of a wiring harness. Figure 3 FIG. 1 is an exploded perspective view of the wiring structure 1 of the wiring harness. Figure 2 , Figure 3 As shown, the wiring structure 1 of the wire harness includes, for example, a groove 111, a flat wiring member 10, a cover member 20, and an elastic member 30. The groove 111 is a recessed portion formed on a dash panel 110 as an example of the above-mentioned body member of the vehicle 100, and extends along the vehicle width direction Y. The groove 111 is recessed from the inner surface of the dash panel 110 toward the front side of the vehicle front-rear direction X, and is open toward the rear side of the vehicle front-rear direction X. The flat wiring member 10 is accommodated and laid in the groove 111 along the vehicle width direction Y.

[0037] The groove portion 111 is formed, for example, to straddle the first ECU 5A of the control device 5 provided at one end in the vehicle width direction Y (see Figure 1) and the second ECU 5B of the control device 5 provided at the other end in the vehicle width direction Y extend integrally along the vehicle width direction Y. In the present embodiment, the flat wiring member 10 has one end 10a and the other end 10b, and the one end 10a and the other end 10b are led out to the outside in a manner of standing up from the groove portion 111. The one end 10a and the other end 10b are folded toward the upper side in the vehicle height direction Z via a folding portion relative to the main body of the flat wiring member 10, for example. And, the one end 10a is connected to the first ECU 5A via a connector or the like, and the other end 10b is connected to the second ECU 5B via a connector or the like. It should be noted that the first ECU 5A and the second ECU 5B here are typically regional ECUs that uniformly control the devices in the surrounding area (area) of the front panel 110, but are not limited to this.

[0038] The flat wiring member 10 is a wiring member constituting a wiring harness, and is constituted by, for example, FPC (Flexible Printed Circuit), FFC (Flexible Flat Cable), etc. The flat wiring member 10 is a thin and flexible flat wiring member. The flat wiring member 10 is formed as a whole in a rectangular shape that is horizontally long in the vehicle width direction Y. The flat wiring member 10 is constituted by, for example, including a base film 11 (see Figure 3 ), wiring pattern 12 and covering layer 13.

[0039] The base film 11 is a substrate having excellent flexibility and restricting the overall shape of the flat wiring member 10. The base film 11 is formed of, for example, a polyimide resin having excellent heat resistance. The wiring pattern 12 is, for example, laminated on the surface (mounting surface) of the base film 11 to form a plurality of conductor circuit portions (pattern layers). The wiring pattern 12 is formed of a conductive material such as copper foil and is printed on the surface of the base film 11 as a printed circuit body. The cover layer 13 is laminated on the entire surface of the base film 11 via an adhesive (not shown) and functions as a protective layer for protecting the conductor circuit portion of the wiring pattern 12.

[0040] In addition, the plurality of conductor circuit portions formed by the wiring pattern 12 can function as any of the signal circuits, signal GND circuits, power grounding circuits, and the like, for example. The signal circuit is, for example, a circuit for transmitting communication signals between the control device 5 and various electronic devices in the vehicle 100 and other on-board devices. The signal GND circuit is a circuit attached to the signal circuit and is conducted between the on-board devices to make the potential that serves as the reference for circuit operation between the on-board devices consistent. The power grounding circuit is a circuit for grounding the power supply system of the on-board device.

[0041] Figure 4 1 is a cross-sectional view of the wiring structure 1 of the wiring harness. Figure 4As shown, the cover member 20 is a member that closes the groove portion 111 when the flat wiring member 10 is accommodated in the groove portion 111. The cover member 20 is formed into a rectangular plate-like shape that is horizontally long in the vehicle width direction Y by, for example, a synthetic resin material. The length of the cover member 20 along the vehicle width direction Y is, for example, configured to be shorter than the length of the groove portion 111 along the vehicle width direction Y, and is shorter by the amount of the opening portion from which the one end portion 10a and the other end portion 10b of the flat wiring member 10 are led out. The cover member 20 may be, for example, composed of a single member extending in the vehicle width direction Y, or may be composed of a plurality of divided bodies divided in the vehicle width direction Y.

[0042] The cover member 20 is assembled to the dash panel 110 so as to cover the groove portion 111 from the rear side in the vehicle front-rear direction X. The cover member 20 is fastened (fixed) to the dash panel 110 by fastening members 50 such as bolts penetrating the cover member 20 along the vehicle front-rear direction X, for example, in a state where the cover member 20 overlaps with the inner surface of the dash panel 110. In addition, the cover member 20 is not limited to this example, and for example, the cover member 20 may be configured to be fixed to the dash panel 110 by so-called snap-fitting based on claw engagement.

[0043] The elastic member 30 is a member that exists between the flat wiring member 10 and the cover member 20 in an elastically compressed state and fills the gap between the flat wiring member 10 and the cover member 20. The elastic member 30 is formed into a rectangular plate-like shape that is horizontally long in the vehicle width direction Y, for example, from a synthetic resin material. The length of the elastic member 30 along the vehicle width direction Y is, for example, substantially the same as the length of the cover member 20 along the vehicle width direction Y. The elastic member 30 is assembled into the groove portion 111 from the rear side of the front panel 110 in the vehicle front-rear direction X, for example, in a state of being integrated with the cover member 20. In addition, the elastic member 30 is configured so that, for example, the width of the elastic member 30 along the vehicle height direction Z in a free state is substantially the same as the width of the pair of side surfaces 111b of the groove portion 111 along the vehicle height direction Z.

[0044] In addition, the elastic member 30 is composed of, for example, a sound absorbing material 30A. The sound absorbing material 30A is a material formed into a foamed or porous shape by finely dispersing gas in a synthetic resin, and as an example, polyurethane sponge or the like can be applied. The sound absorbing material 30A (elastic member 30), for example, can suppress the shaking of the flat wiring member 10 in the groove portion 111 due to the vibration of the vehicle 100 input to the front panel 110, and can absorb abnormal noise generated by the shaking of the flat wiring member 10.

[0045] In the present embodiment, an adhesive portion 40 is provided on the bottom surface 111a of the groove portion 111, and the adhesive portion 40 is used to adhere the flat wiring member 10. The adhesive portion 40 is composed of, for example, a double-sided tape, an adhesive, etc., and extends along the vehicle width direction Y. The adhesive portion 40 is provided corresponding to the main body of the flat wiring member 10, that is, the portion other than the one end 10a and the other end 10b drawn out from the groove portion 111, and can fix the main body of the flat wiring member 10 to the bottom surface 111a of the groove portion 111.

[0046] As described above, the wiring structure 1 of the wiring harness of the present embodiment is constructed to include a flat wiring member 10. Therefore, the wiring harness composed of the flat wiring member 10 is lighter in weight than a general wiring harness formed by bundling various electric wires. Here, in the case where the wiring structure 1 of the wiring harness described above is arranged 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, since the wiring harness is constructed to include the flat wiring member 10, the increase in the overall weight of the wiring harness can be suppressed, and the enlargement of the wiring harness can be coped with.

[0047] In addition, usually, a wire harness formed by bundling various electric wires is manufactured by manual labor of an operator. In contrast, the flat wiring member 10 can be manufactured by automation, so by forming a wire harness with the flat wiring member 10, the manufacturing man-hours of the wire harness can also be reduced. In addition, usually, a large wire harness formed by bundling various electric wires is difficult to transport due to its weight. In contrast, according to the present embodiment, the use of the flat wiring member 10 also has advantages such as shortening the manufacturing time of the wire harness itself or the vehicle 100 using the wire harness, or making it difficult to limit the manufacturing site.

[0048] As described above, the wiring structure 1 of the wire harness of the present embodiment includes: the groove 111 formed in the dash panel 110 as an example of a body member of the vehicle 100; the flat wiring member 10 which is accommodated in the groove 111 of the dash panel 110 and has flexibility; and the cover member 20 which closes the groove 111 in a state where the flat wiring member 10 is accommodated in the groove 111 of the dash panel 110. With this structure, in the wiring structure 1 of the wire harness, for example, the groove 111 formed in the dash panel 110 is closed by the cover member 20, so that the flat wiring member 10 constituting the wire harness can be assembled to the vehicle 100. As a result, the wiring structure 1 of the wire harness can improve the ease of assembly to the vehicle 100.

[0049] In addition, in the wiring harness routing structure 1 of the present embodiment, an elastic member 30 is provided between the flat wiring member 10 and the cover member 20 in an elastically compressed state. According to this structure, the wiring harness routing structure 1 can fill the gap between the flat wiring member 10 and the cover member 20 with the elastic member 30, so that, for example, the flat wiring member 10 can be suppressed from shaking in the groove portion 111 due to the vibration of the vehicle 100 input to the dash panel 110, and the generation of abnormal noise caused by the shaking of the flat wiring member 10 can also be suppressed.

[0050] In the wiring harness routing structure 1 of the present embodiment, the elastic member 30 is formed of the sound absorbing material 30A. According to this structure, the wiring harness routing structure 1 can further suppress the generation of abnormal noises generated by, for example, the vibration of the vehicle 100 input to the dash panel 110, the shaking of the flat wiring member 10, etc., by the sound absorbing material 30A.

[0051] In addition, in the wiring structure 1 of the wire harness of the present embodiment, the adhesive portion 40 to which the flat wiring member 10 is bonded is provided on the bottom surface 111a of the groove portion 111. According to this structure, the wiring structure 1 of the wire harness can fix the flat wiring member 10 to the bottom surface 111a of the groove portion 111 by the adhesive portion 40, so that, for example, the flat wiring member 10 can be suppressed from moving or shaking relative to the dash panel 110 due to the vibration of the vehicle 100 input to the dash panel 110.

[0052] In addition, in the wiring structure 1 of the wiring harness of the present embodiment, the flat wiring member 10 has one end 10a and the other end 10b which are drawn out in a manner standing up from the groove portion 111 and connected to the control device 5. According to this structure, the wiring structure 1 of the wiring harness can, for example, accommodate the main body between the one end 10a and the other end 10b of the flat wiring member 10 in the groove portion 111 to protect it more reliably, and can draw the one end 10a and the other end 10b out from the groove portion 111 and connect to the control device 5.

[0053] In addition, in the present embodiment, the case where the groove portion 111 continuously extends along the vehicle width direction Y so as to straddle between the first ECU 5A and the second ECU 5B of the control device 5 is exemplified, but the present invention is not limited to this example, and for example, the groove portion 111 may be intermittently provided along the vehicle width direction Y. In addition, in the present embodiment, the case where the elastic member 30 is provided between the flat wiring member 10 and the cover member 20 is exemplified, but the present invention is not limited to this example, and for example, the elastic member 30 may not be provided. In addition, in the present embodiment, the case where the bonding portion 40 bonding the flat wiring member 10 to the bottom surface 111a of the groove portion 111 is provided is exemplified, but the present invention is not limited to this example, and for example, the bonding portion 40 may not be provided.

[0054] 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. These embodiments can be implemented in various other ways, and various omissions, substitutions, 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 implemented with appropriate changes.

Claims

1. A wiring harness structure, characterized in that: have: a groove portion formed in a body member of a vehicle; a flat wiring member, the flat wiring member being accommodated in the groove portion of the vehicle body member and having flexibility; as well as A cover member that closes the groove portion of the vehicle body member in a state where the flat wiring member is accommodated in the groove portion.

2. The wiring harness routing structure according to claim 1, wherein: The wiring harness routing structure includes an elastic member that is interposed between the flat wiring material and the cover member in an elastically compressed state.

3. The wiring harness routing structure according to claim 2, wherein: The elastic component is made of sound absorbing material.

4. The wiring harness routing structure according to claim 1 or 2, wherein: An adhesive portion is provided on the bottom surface of the groove portion, and the adhesive portion bonds the flat wiring member.

5. The wiring harness routing structure according to claim 1 or 2, wherein: The flat wiring member has an end portion, the end portion is led out in a manner of standing from the groove portion, and the end portion is connected to a control device.

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