Wiring Module

Abstract

To provide a technology that can easily suppress noise occurring in a transmission member in a wiring module in which the transmission member is disposed along a sheet.SOLUTION: A wiring module 20 includes: a functional sheet 30 disposed between a panel and an interior member 16 in a vehicle 10; a transmission member 40A disposed on one surface side relative to the functional sheet 30; and a conductive sheet 50A which partially covers the transmission member 40A. The functional sheet 30 has: a conductive layer 32; and a layer which achieves at least one of a heat adjustment function and a soundproof function. The conductive sheet 50A is electrically connected to the conductive layer 32.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a wiring module. [Background technology]

[0002] Patent Document 1 discloses a wiring member in which electric wires are crossed and wired on a sheet material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-207816 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a wiring member in which electric wires are arranged along a sheet material, noise occurs in the electric wires, and when there are multiple electric wires, noise such as crosstalk can occur.

[0005] Therefore, an object of the present invention is to provide a technique that can easily suppress noise generated in a transmission member in a wiring module in which the transmission member is arranged along a sheet. [Means for solving the problem]

[0006] The wiring module of the present disclosure is a wiring module comprising a functional sheet arranged between a panel and an interior component in a vehicle, a transmission component arranged on one side of the functional sheet, and a conductive sheet covering a portion of the transmission component, wherein the functional sheet has a conductive layer and a layer performing at least one of a thermal regulation function and a soundproofing function, and the conductive sheet is electrically connected to the conductive layer. Effect of the Invention

[0007] According to the present disclosure, in a wiring module in which a transmission member is arranged along a sheet, noise generated in the transmission member can be easily suppressed. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic perspective view showing a vehicle in which a wiring module is installed. [Diagram 2] FIG. 2 is an exploded perspective view showing the wiring module according to the first embodiment. [Diagram 3] FIG. 3 is a perspective view showing the wiring module according to the first embodiment. [Figure 4] FIG. 4 is an enlarged plan view of a portion of FIG. [Diagram 5] FIG. 5 is a cross-sectional view taken along line VV in FIG. [Figure 6] FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. [Figure 7] FIG. 7 is another partially enlarged plan view of FIG. [Figure 8] FIG. 8 is a plan view showing the wiring module according to the second embodiment. [Figure 9] FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0010] The wiring module of the present disclosure is as follows.

[0011] (1) A wiring module comprising a functional sheet disposed between a panel and an interior member of a vehicle, a transmission member disposed on one side of the functional sheet, and a conductive sheet covering a part of the transmission member, the functional sheet having a conductive layer and a layer having at least one of a heat adjustment function and a soundproofing function, and the conductive sheet being electrically connected to the conductive layer. As a result, the conductive sheet covering a part of the transmission member is electrically connected to the conductive layer of the functional sheet, and therefore noise generated in the transmission member can be easily suppressed by the functional sheet and the conductive sheet.

[0012] (2) In the wiring module of (1), the conductive layer may be provided with a vehicle body side connection portion that can be electrically connected to a metal portion of the vehicle body, thereby allowing the conductive sheet and the functional sheet to be connected to the metal portion of the vehicle body, thereby enhancing the shielding effect of the conductive sheet and the functional sheet.

[0013] (3) In the wiring module of (1) or (2), a second transmission member may be disposed on the one surface side of the functional sheet, and the conductive sheet may be provided between the transmission member and the second transmission member. In this way, the transmission member and the second transmission member are separated by the conductive sheet, and noise between the transmission member and the second transmission member is easily suppressed.

[0014] (4) In the wiring module of (3), the transmission member and the second transmission member may intersect at an intersection, and the conductive sheet may be interposed between the transmission member and the second transmission member at the intersection, thereby easily suppressing noise such as crosstalk between the transmission member and the second transmission member even at the intersection.

[0015] (5) In the wiring module of any one of (1) to (4), the conductive sheet may be provided by bending a part of a conductive layer of a sheet constituting the functional sheet. In this way, the conductive sheet and the functional sheet are constituted by a single sheet, and the electrical connection state between the conductive sheet and the functional sheet is stable. In addition, a connecting member that electrically connects the conductive sheet and the functional sheet at the bent portion of the single sheet can be omitted, and an increase in the number of parts in the wiring member can be suppressed.

[0016] (6) The wiring module of any one of (1) to (5) may further include a fastener formed of a conductive material, the fastener including a first contact portion and a second contact portion that are connected to each other, the first contact portion contacting the conductive sheet, and the second contact portion contacting the conductive layer to fasten the functional sheet and the conductive sheet. This allows the functional sheet and the conductive sheet to be electrically connected via the fastener. This eliminates the need to provide a member that electrically connects the functional sheet and the conductive sheet separately from the fastener.

[0017] (7) In the wiring module of any one of (1) to (6), a connector provided at an end of the transmission member may be disposed on the functional sheet, and the conductive sheet may cover at least a portion of the connector from which the transmission member extends. This makes it possible to easily suppress noise generated in the transmission member connected to the connector.

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

[0019] [Embodiment 1] The wiring module according to the first embodiment will be described below.

[0020] <Vehicles in which the wiring module is installed> FIG. 1 is a schematic perspective view showing a vehicle 10 in which a wiring module 20 is incorporated. The vehicle 10 includes a body 12. The body 12 is a part that forms the outer shape of the vehicle 10. The body 12 may be a monocoque body, or may be a body mounted on a ladder frame. Here, the body 12 includes side panels surrounding the passenger compartment, a roof panel 13, and further door panels for passengers to get in and out of the vehicle, a rear door panel for loading and unloading luggage, and the like. The body 12 may be formed of metal or resin. The body 12 may be formed of a combination of metal and resin. A plate-shaped part of the body 12 that covers the upper part of the passenger compartment is the roof panel 13. The roof panel 13 may be curved partially or entirely to form the outer shape of the body 12. The roof panel 13 may be formed of metal or resin. The roof panel 13 may be formed of a combination of metal and resin. Here, the roof panel 13 is formed with an antenna hole 13h (see FIG. 2).

[0021] The wiring module 20 is incorporated into the vehicle 10. The wiring module 20 is provided between a panel and an interior member. In the present embodiment, an example will be described in which the wiring module 20 is incorporated into the roof 14 including the roof panel 13. The wiring module 20 may also be incorporated into other portions of the vehicle 10, such as an entry / exit door, a rear door, an instrument panel, etc.

[0022] Fig. 2 is an exploded perspective view showing the wiring module 20 according to embodiment 1. Fig. 3 is a perspective view showing the wiring module 20 according to embodiment 1. Fig. 2 is a view of the wiring module 20 seen obliquely from above, and Fig. 3 is a view of the wiring module 20 seen obliquely from below.

[0023] FIG. 2 illustrates the roof 14. The roof 14 includes the roof panel 13 and an interior member 16. The interior member 16 is a plate-like member made of resin or the like. The interior member 16 may be curved partially or entirely to form the ceiling shape of the vehicle interior. The interior member 16 is attached to the lower side of the roof panel 13. The interior member 16 is a portion that is exposed to the vehicle interior. The interior member 16 is sometimes called a roof liner. In this embodiment, the wiring module 20 is provided between the roof panel 13 and the interior member 16.

[0024] <Overall structure of the wiring module> The wiring module 20 includes a functional sheet 30 , electric wires 40 , and a conductive sheet 50 .

[0025] The functional sheet 30 is incorporated into the roof 14 so as to spread out over a surface of the roof 14. For example, the functional sheet 30 may be arranged so as to spread over 80% or more of the area of ​​the roof 14. Also, for example, the functional sheet 30 may be arranged so as to spread over the entire area above the headrests of multiple passenger seats in the vehicle cabin. By arranging the functional sheet 30 so as to spread out over the roof 14, the electric wires 40 and the like can be fixed over as wide an area as possible of the roof 14. Also, the functions of the functional sheet 30 can be exerted over as wide an area as possible of the roof 14.

[0026] The electric wire 40 is arranged along the functional sheet 30. The electric wire 40 is connected to the device 70 arranged on the roof 14. The electric wire 40 extends along a predetermined path so as to be connectable to the device 70. The device 70 transmits or receives an electric signal through the electric wire 40. Alternatively, the device 70 receives or distributes power through the electric wire 40. The connection between the electric wire 40 and the device 70 may be made through a connector C. The electric wire 40 may be directly introduced into the device 70 without the connector C and directly connected to an electrical element in the device 70. Examples of the device 70 include an electronic control unit, a lamp (particularly a map lamp and an interior lamp), a speaker, an interior camera, a monitor, a projection device, an external communication antenna, an interior antenna, and the like. The device 70A in FIG. 2 will be described as an electronic control unit. This electronic control unit 70A is a device that controls each device 70 mounted on the roof 14 while communicating with other electronic control units provided in the vehicle 10. 2 will be described as an external communication antenna unit. The external communication antenna unit 70B is a device that performs wireless communication between the vehicle 10 and external devices or other vehicles.

[0027] Here, there are multiple electric wires 40. The multiple electric wires 40 are arranged along a path leading from the electronic control unit 70A to the front and along multiple paths leading from the electronic control unit 70A to the device 70.

[0028] The electric wires 40 running along a path from the electronic control unit 70A toward the front are held along a fixed path by being attached to the functional sheet 30 within the area of ​​the functional sheet 30. The electric wires 40 running along a path from the electronic control unit 70A toward the front extend outward from the front of the functional sheet 30. The electric wires 40 are arranged, for example, along an A-pillar or the like of the vehicle 10, and are connected to other electronic control units, power sources, and the like of the vehicle 10.

[0029] The multiple electric wires 40 along multiple routes from the electronic control unit 70A to the multiple devices 70 are held along certain routes by being attached to the functional sheet 30. The routes of the multiple electric wires 40 are arbitrary.

[0030] The conductive sheet 50 is overlaid on the functional sheet 30. The conductive sheet 50 electromagnetically shields the electric wires 40. Here, the conductive sheet 50 is described as partially overlapping the functional sheet 30.

[0031] It is preferable that the paths of the multiple electric wires 40 do not intersect with each other. If the paths of the multiple electric wires 40 do not intersect with each other, an increase in the thickness of the wiring module 20 due to the intersections is suppressed. In addition, the occurrence of noise problems such as crosstalk between the electric wires 40 at the intersections is suppressed. However, there is a risk that intersections will occur depending on the paths of the multiple electric wires 40. In this case, by providing a conductive sheet 50 at the intersections, noise problems are less likely to occur between the electric wires 40 at the intersections.

[0032] <About each part of the wiring module> Hereinafter, each part of the wiring module 20 will be described in more detail with reference to Figures 4 to 7 in addition to Figures 1 to 3. Figure 4 is an enlarged plan view of a portion of Figure 3. Figure 5 is a cross-sectional view taken along line VV in Figure 4. Figure 6 is a cross-sectional view taken along line VI-VI in Figure 4. Figure 7 is an enlarged plan view of another portion of Figure 3.

[0033] <Functional sheet> As shown in FIG. 5, the functional sheet 30 includes a conductive layer 32, a soundproof layer 34, and a heat adjustment layer 36. The conductive layer 32, the soundproof layer 34, and the heat adjustment layer 36 are laminated in this order. In the functional sheet 30, the conductive layer 32 is the outermost layer. Furthermore, when the functional sheet 30 has a multi-layer structure of three or more layers, the order of stacking the multiple layers including the conductive layer 32 is arbitrary, and for example, the multiple layers may be stacked so that the conductive layer 32 is an intermediate layer. When the functional sheet 30 is placed in the vehicle 10, the conductive layer 32 is placed in the uppermost layer. When the functional sheet 30 is placed in the vehicle 10, the conductive layer 32 may be placed in the lowermost layer.

[0034] The conductive layer 32 is, for example, a radio wave shielding layer that exhibits a radio wave shielding function. The radio wave shielding layer is a layer that makes it difficult for radio waves to be transmitted between one surface side and the other surface side of the functional sheet 30. The radio wave shielding layer may be a layer formed by uniformly spreading a metal such as aluminum or iron.

[0035] The soundproof layer 34 is a layer that has a soundproofing function. The soundproof layer 34 is a layer that makes it difficult for sound to be transmitted between one surface side and the other surface side of the functional sheet 30. The soundproof layer 34 may reflect sound, or may absorb sound energy as thermal energy. Specifically, the soundproof layer 34 may be a sheet including fine gaps, such as a nonwoven sheet or a foamed sheet. The soundproof layer 34 may be made of sound-absorbing paint.

[0036] The heat adjustment layer 36 is a layer that performs a heat adjustment function. The heat adjustment layer 36 is a layer that adjusts the heat passing between one side and the other side of the functional sheet 30 on the indoor side. The heat adjustment layer 36 may be a layer that makes it difficult for heat to be transmitted between one side and the other side of the functional sheet 30. The heat adjustment layer 36 may be a layer that has a lower thermal conductivity than other layers. The heat adjustment layer 36 may be a layer that reflects thermal radiation energy. The heat adjustment layer 36 may be a layer that radiates thermal energy. Specifically, the heat adjustment layer 36 may be a sheet that includes fine gaps, such as a nonwoven sheet, a foam sheet, etc. The heat adjustment layer 36 may be a heat insulating paint, a heat insulating paint, or a heat dissipating paint.

[0037] It is not essential that the functional sheet 30 includes both the soundproof layer 34 and the heat adjustment layer 36. The functional sheet 30 may include only one of the soundproof layer 34 and the heat adjustment layer 36. The functional sheet 30 may also have one layer that has both a heat adjustment function and a soundproof function, instead of the soundproof layer 34 and the heat adjustment layer 36. For example, a layer formed of a nonwoven sheet can function as both a heat adjustment layer and a soundproof layer.

[0038] The layers may simply be stacked on top of each other. The layers may be fixed by double-sided tape, adhesive, welding, etc. When the layers are fixed, they may be fixed over the entire surface or only a part of the surface.

[0039] Here, the functional sheet 30 also has a function of fixing members, such as the electric wires 40 or the equipment 70, that are arranged on the functional sheet 30.

[0040] <Electric wire> The electric wire 40 is an example of a transmission member. The electric wire 40 may be a single-core electric wire or a composite of a plurality of single-core electric wires. The single-core electric wire may be a general single-core electric wire having a core wire 42 and a coating layer 44 around the core wire 42, or may be a bare conductor, a shielded wire, an enameled wire, a nichrome wire, a coaxial wire, or the like. The composite of a plurality of single-core electric wires may be a cable with a sheath or a cable without a sheath. The cable with a sheath has a plurality of single-core electric wires and a sheath covering the plurality of single-core electric wires. For example, a cable without a sheath is used in which a plurality of single-core electric wires are twisted together, such as a twisted wire. The use of the electric wire 40 may be various signal lines or various power lines, and is set according to the device 70.

[0041] The electric wire 40 is attached to the functional sheet 30. The specific configuration for fixing the electric wire 40 is not particularly limited as long as the electric wire 40 is attached to the functional sheet 30 so as to be arranged along a certain path. The electric wire 40 may also be attached to the conductive sheet. In this case, the electric wire 40 can be fixed more firmly.

[0042] For example, the electric wire 40 may be attached to one surface of the functional sheet 30. For example, the electric wire 40 may be welded (also referred to as fusion-bonded) to one surface of the functional sheet 30. The welded portion formed by this is in a state where at least one of the electric wire 40 and the functional sheet 30 is melted and attached to each other. The welding of the electric wire 40 and the functional sheet 30 may be performed by ultrasonic welding or heat welding. Also, the electric wire 40 and the functional sheet 30 may be welded by dissolving at least one surface of the electric wire 40 and the functional sheet 30 with a solvent. Also, for example, the electric wire 40 may be attached to the functional sheet 30 by an adhesive, double-sided tape, or the like. Also, for example, the electric wire 40 may be sewn to the functional sheet 30 by sewing thread or the like. Also, for example, with the electric wire 40 arranged on one side of the functional sheet 30, an adhesive tape may be attached to one side of the functional sheet 30 so as to straddle the electric wire 40 from the one side of the functional sheet 30, thereby attaching the electric wire 40 to one side of the functional sheet 30.

[0043] The electric wire 40 does not need to be attached to only one surface of the functional sheet 30. The electric wire 40 may have both a portion attached to one surface of the functional sheet 30 and a portion attached to the other surface of the functional sheet 30. In this case, the electric wire 40 may be attached so as to pass from one surface to the other surface in the middle portion or edge portion of the functional sheet 30.

[0044] Also, for example, the electric wire 40 may be attached to the functional sheet 30 by being sandwiched between two sheets. For example, when the functional sheet 30 includes a plurality of layers, the electric wire 40 may be sandwiched between the sheets constituting each layer. Also, when another sheet is superimposed on the functional sheet 30, the electric wire 40 may be sandwiched between the functional sheet 30 and the other sheet. In this case, the two sheets sandwiching the electric wire 40 may be attached to each other by welding, or may be attached by an adhesive or double-sided tape. Also, when another sheet is superimposed on the functional sheet 30, the electric wire may be attached to the other sheet. Thereby, by superimposing the other sheet, it becomes possible to arrange various wires in a state of being superimposed in two or three layers.

[0045] The multiple electric wires 40 include a first electric wire 40A and a second electric wire 40B. The first electric wire 40A and the second electric wire 40B cross each other at an intersection. The first electric wire 40A and the second electric wire 40B are arranged on one side of the functional sheet 30. A conductive sheet 50 is provided between the first electric wire 40A and the second electric wire 40B. The first electric wire 40A and the second electric wire 40B are attached to the functional sheet 30.

[0046] As shown in Fig. 7, a connector C is disposed on the functional sheet 30. The connector C shown in Fig. 7 is connected to an electronic control unit 70A. An end of an electric wire 40 is housed in the connector C.

[0047] <Conductive sheet> The conductive sheet 50 is formed into a sheet shape from a material having electrical conductivity. The conductive sheet 50 is formed from a metal such as aluminum or iron. Here, the conductive sheet 50 is described as being a member having a single-layer structure. Another sheet may be laminated on the conductive sheet 50. For example, instead of the single-layer conductive sheet 50, a sheet having the same laminate structure as the functional sheet 30 may be provided. In this case, the layer in the sheet corresponding to the conductive layer is the conductive sheet.

[0048] The conductive sheet 50 is electrically connected to the conductive layer 32 in the functional sheet 30. The conductive sheet 50 is provided so as to partially overlap the functional sheet 30. Hereinafter, the conductive sheet 50 is provided in two separate locations. In the following, when it is necessary to distinguish between the two conductive sheets 50, one will be referred to as conductive sheet 50A and the other as conductive sheet 50B.

[0049] The conductive sheet 50A is provided between the first electric wire 40A and the second electric wire 40B. At the intersection, the conductive sheet 50A is interposed between the first electric wire 40A and the second electric wire 40B. Here, the first electric wire 40A passes through the area surrounded by the functional sheet 30 and the conductive sheet 50A. The second electric wire 40B passes outside the area surrounded by the functional sheet 30 and the conductive sheet 50A. The second electric wire 40B passes over the conductive sheet 50A. The second electric wire 40B straddles the conductive sheet 50A. The second electric wire 40B is attached to the functional sheet 30 but is not attached to the conductive sheet 50A. The second electric wire 40B may be attached to the functional sheet 30 at positions on both sides of the part where the second electric wire 40B straddles the conductive sheet 50A. The second electric wire 40B may be attached to the conductive sheet 50A.

[0050] The combination of the first electric wire 40A and the second electric wire 40B separated by the conductive sheet 50A is not particularly limited and can be set appropriately. For example, the first electric wire 40A may be an electric wire that can be a noise source such as a power line, and the second electric wire 40B may be an electric wire that is easily affected by noise such as a communication line. Also, for example, the first electric wire 40A may be an electric wire that is easily affected by noise such as a communication line, and the second electric wire 40B may be an electric wire that can be a noise source such as a power line. In the example shown in FIG. 2, the first electric wire 40A is a communication line connected to the external communication antenna unit 70B. The second electric wire 40B is a power line connected to a device 70 other than the external communication antenna unit, such as a lamp.

[0051] The conductive sheet 50B covers at least the portion of the connector C from which the electric wires 40 extend. Here, the conductive sheet 50B also entirely covers the connector C and the device 70A to which the connector C is connected.

[0052] The conductive sheet 50 is fastened to the functional sheet 30 by fasteners 60. Thus, the wiring module 20 further includes the fasteners 60.

[0053] <Fastener> The fastener 60 fastens the overlapping portion of the functional sheet 30 and the conductive sheet 50. The fastener 60 includes a first contact portion 61 and a second contact portion 62. The first contact portion 61 and the second contact portion 62 are connected to each other. Here, the first contact portion 61 and the second contact portion 62 are connected via a connecting portion 63.

[0054] The first contact portion 61 is in contact with the conductive sheet 50. The second contact portion 62 is in contact with the conductive layer 32. Here, the first contact portion 61 presses the conductive sheet 50 toward the functional sheet 30. The second contact portion 62 is a pressing piece that presses the functional sheet 30 toward the conductive sheet 50. However, it is sufficient for the first contact portion 61 and the second contact portion 62 to be in contact with the conductive sheet 50 and the conductive layer 32, respectively, and they do not need to be pressing pieces. The connecting portion 63 penetrates the functional sheet 30 and the conductive sheet 50.

[0055] Here, as shown in FIG. 6, the fastener 60 is formed by bending a rod-shaped member such as a wire. The middle part of the rod-shaped member is the first contact part 61. One end and the other end of the rod-shaped member are the second contact part 62. The part between the first contact part 61 and the second contact part 62 is the connecting part 63. Note that, contrary to the example shown in FIG. 6, the middle part of the rod-shaped member may be the second contact part 62, and one end and the other end of the rod-shaped member may be the first contact part 61. Such a fastener 60 may be, for example, a staple. Both ends of a U-shaped staple may penetrate the functional sheet 30 and the conductive sheet 50, and then be bent and deformed to become the fastener 60. Note that, as the fastener 60 whose connecting part 63 penetrates the functional sheet 30 and the conductive sheet 50, a piercing terminal or the like may be used.

[0056] The connecting portion 63 does not have to penetrate the sheet. For example, the connecting portion may connect the first contact portion 61 and the second contact portion 62 outside the outer edges of the functional sheet 30 and the conductive sheet 50. As such a fastener 60, for example, a spring clip having a connecting portion formed in a spring shape may be used.

[0057] The fastener 60 is an integral member having the first contact portion 61 and the second contact portion 62 before the functional sheet 30 and the conductive sheet 50 are fastened together. The fastener may be a separate member before the functional sheet 30 and the conductive sheet 50 are fastened together. It is sufficient that the first contact portion and the second contact portion are connected to each other when the functional sheet 30 and the conductive sheet 50 are fastened together. Such a fastener may be, for example, a bolt and a nut.

[0058] <Electrical connection structure between functional sheet and conductive sheet> The conductive layer 32 and the conductive sheet 50 in the functional sheet 30 are electrically connected. The wiring module 20 includes an electrical connection portion between the conductive layer 32 and the conductive sheet 50. Such an electrical connection portion may be a direct connection portion or an indirect connection portion. The wiring module 20 may include either one or both of a direct connection portion and an indirect connection portion.

[0059] The direct connection portion is a portion where the conductive layer 32 and the conductive sheet 50 are directly connected to each other without the intervention of another member. For example, when the conductive layer 32 and the conductive sheet 50 are formed by bending one conductive sheet, the bent portion of the conductive sheet is regarded as the direct connection portion. Also, for example, when the conductive layer 32 and the conductive sheet 50 are in contact with each other, the contact portion between the conductive layer 32 and the conductive sheet 50 is regarded as the direct connection portion. When the conductive layer 32 and the conductive sheet 50 are in contact with each other, the contact state between the conductive layer 32 and the conductive sheet 50 may be maintained by welding the conductive layer 32 and the conductive sheet 50 to each other. Also, a holding member that holds the conductive layer 32 and the conductive sheet 50 in contact with each other may be provided. For example, the holding member may be a member that holds the functional sheet 30 and the conductive sheet 50 together like the fastener 60.

[0060] The indirect connection portion is a portion where the conductive layer 32 and the conductive sheet 50 are indirectly connected via another member. In this case, the wiring module includes an electrical connection member that connects the conductive layer 32 and the conductive sheet 50.

[0061] Here, the wiring module 20 includes an indirect connection portion. Here, the conductive layer 32 and the conductive sheet 50 are electrically connected via a fastener 60. Therefore, the fastener 60 also serves as an electrical connection member. Specifically, the first contact portion 61 is in contact with the conductive sheet 50. The second contact portion 62 is in contact with the conductive layer 32. The first contact portion 61 and the second contact portion 62 are connected. The fastener 60 is formed of a material having electrical conductivity. As a result, the conductive layer 32 and the conductive sheet 50 are electrically connected via the fastener 60. Here, the functional sheet 30 and the conductive sheet 50 are laminated so that the conductive layer 32 and the conductive sheet 50 face outward from each other, but this is not a required configuration. For example, the conductive layer 32 may be located in an intermediate layer in the functional sheet. Even in this case, the conductive layer 32 and the conductive sheet 50 can be electrically connected via the fastener 60 as long as the second contact portion 62 is in contact with the conductive layer 32.

[0062] The electrically connected conductive layer 32 and conductive sheet 50 form a radio wave shielding portion of the wiring module 20. When the wiring module 20 is mounted on the vehicle 10, the radio wave shielding portion is grounded to a metal portion of the vehicle body. The metal portion of the vehicle body is also called a body earth, etc.

[0063] <Grounding structure between radio wave shielding section and body earth> With the wiring module 20 assembled to the vehicle 10, the functional sheet 30 is positioned between the interior member 16 and the roof panel 13. The functional sheet 30 is attached so that the conductive layer 32 faces the exterior side of the vehicle. The functional sheet 30 may be fixed to the interior member 16 or the like, or may simply be placed on the interior member 16. For example, the functional sheet 30 may be fixed to the interior member 16 or the like by double-sided tape, adhesive, welding, or the like.

[0064] The conductive layer 32 is provided with a vehicle body side connection portion. The vehicle body side connection portion is provided so as to be electrically connectable to the body earth. The configuration of such a vehicle body side connection portion is not particularly limited. Here, a connection member 80 is provided separately from the conductive layer 32 as the vehicle body side connection portion. Such a connection member 80 is, for example, a conductive rubber or a conductive adhesive provided on the conductive layer 32. The connection member 80 is in direct contact with the body earth. Also, the fastener 60 may be used as the connection member. In other words, the second contact portion 62 that presses the conductive layer 32 may be in direct contact with the body earth.

[0065] The vehicle body side connection portion may be a part of the conductive layer 32. For example, the vehicle body side connection portion may be an exposed portion of the conductive layer where the conductive layer 32 is exposed. In this case, the exposed portion of the conductive layer is in direct contact with the body earth.

[0066] However, it is not essential that the conductive layer 32 be provided with a vehicle body side connection portion. For example, when the functional sheet 30 and the conductive sheet 50 are not grounded to a metal portion of the vehicle body, the conductive layer 32 does not need to be provided with a vehicle body side connection portion. Also, for example, the vehicle body side connection portion may be provided on the conductive sheet 50.

[0067] 5 and 6 show an example in which the vehicle body side connection portion (here, the fastener 60 and the connection member 80) contacts the body earth. Specifically, in the figure, a reinforcement bar 13a is provided on the passenger compartment side of the roof panel 13. The reinforcement bar 13a is formed of a metal material. The reinforcement bar 13a is also called a stay or a beam. In the vehicle 10, the reinforcement bar 13a is provided so as to extend in the vehicle width direction, for example. In the vehicle 10, a plurality of reinforcement bars 13a are provided at intervals along the front-rear direction, for example. The fastener 60 and the connection member 80 contact one of the reinforcement bars 13a. The fastener 60 and the connection member 80 are provided so as to be located below one of the reinforcement bars 13a. The fastener 60 and the connection member 80 contact the lower surface of the reinforcement bar 13a. The fastener 60 and the connection member 80 may contact the side surface of the reinforcement bar 13a. The metal part in the vehicle body is not limited to the body frame, and may be a body panel, etc. For example, the vehicle body side connection portion may be in contact with the roof panel 13 .

[0068] When the wiring module 20 is mounted on the vehicle 10, the metal part 13a of the vehicle 10 and the radio wave shielding part of the wiring module 20 are electrically connected. Therefore, the present disclosure can also be considered to include a grounding structure of the radio wave shielding part of the wiring module 20. The grounding structure of the radio wave shielding part of the wiring module 20 includes an electrical connection part between the metal part 13a and the radio wave shielding part. Such an electrical connection part may be a direct connection part where the metal part 13a and the conductive layer 32 are connected through direct contact with each other. Such an electrical connection part may be an indirect connection part where the metal part 13a and the conductive layer 32 are connected via a connection member 80.

[0069] <Devices incorporated in the wiring module> A part or all of the above-mentioned devices 70 arranged on the roof 14 may be incorporated in the wiring module 20. When a part of the above-mentioned devices 70 is incorporated in the wiring module 20, any combination of the devices 70 may be incorporated in the wiring module 20. For example, it is preferable that a relatively lightweight device 70 such as an antenna for internal communication is incorporated in the wiring module 20.

[0070] The device 70 incorporated in the wiring module 20 may be attached to, for example, the functional sheet 30. The fixing position of the device 70 to the functional sheet 30 is arbitrary. Preferably, the device 70 is attached to the functional sheet 30 at a position suitable for the role that the device 70 will play. For example, assuming that the device 70 is a map lamp, the device 70 is attached to a portion of the functional sheet 30 that will be disposed diagonally above and in front of the front seats. Also, assuming that the device 70 is an interior antenna, the device 70 is attached to a portion of the functional sheet 30 that will be disposed above the front or rear seats.

[0071] <Positional relationship between the functional sheet and the device> Since the wiring module 20 includes the conductive layer 32, it is preferable that the external communication antenna unit 70B is provided on the vehicle exterior side with respect to the conductive layer 32. This prevents the conductive layer 32 from being interposed between the external communication antennas 73a, 73b and an external device (such as a base station) during wireless communication between the external communication antennas 73a, 73b and the external device, and ensures good wireless communication between the devices. In this example, an antenna hole 13h is formed in the roof panel 13. The external communication antennas 73a, 73b are disposed at positions corresponding to the antenna hole 13h.

[0072] When the external communication antenna unit is disposed on the roof panel 13, a hole through which an antenna wire passes may be formed in the roof panel 13 instead of the antenna hole 13h. When the roof panel 13 is made of resin or the like, the external communication antenna unit may be disposed between the roof panel 13 and the functional sheet 30. In this case, it is not necessary to form the antenna hole 13h or a hole through which an electric wire passes in the roof panel 13.

[0073] Furthermore, since the wiring module 20 includes the conductive layer 32, it is preferable that the interior antenna is provided on the interior side of the vehicle cabin with respect to the conductive layer 32. This allows radio waves radiated from the interior antenna and the interior devices in the vehicle cabin to be blocked by the conductive layer 32 and are less likely to propagate to the exterior of the vehicle.

[0074] Assuming that the wiring module 20 includes the thermal adjustment layer 36, the devices 70 preferably include cabin-side devices 70 that are provided on the cabin side of the thermal adjustment layer 36. Here, it is assumed that, of the multiple devices 70, the devices 70 other than the external communication antenna unit 70B are cabin-side devices 70.

[0075] The temperature of the roof 14 may increase due to sunlight. Because heat from sunlight is blocked by the thermal adjustment layer 36, the temperature on the inside of the vehicle compartment relative to the thermal adjustment layer 36 is less likely to increase than on the outside of the vehicle compartment. Therefore, if the device 70 is provided on the inside of the vehicle compartment relative to the thermal adjustment layer 36, an increase in the temperature around the device 70 can be suppressed. As a result, it is not necessary to use a device with a high heat resistance temperature for the device 70.

[0076] Similarly, if the electric wire 40 is provided on the passenger compartment side of the thermal adjustment layer 36, it is possible to suppress a rise in temperature of the electric wire 40. Therefore, it is not necessary to use an electric wire 40 having a high heat resistance.

[0077] In this embodiment, there is a device 70 (e.g., an electronic control unit 70A) that is arranged on the vehicle interior side of the functional sheet 30, and a device 70 (e.g., an antenna unit 70B for external communication) that is arranged on the vehicle exterior side of the functional sheet 30. Also in this embodiment, an electric wire 40 is arranged on the vehicle interior side of the functional sheet 30. The electric wire 40 is connected to the device 70 on each of both sides of the functional sheet 30. The electric wire 40 that is arranged on the vehicle interior side of the functional sheet 30 is directly connected to the device 70 that is arranged on the vehicle interior side of the functional sheet 30. The electric wire 40 that is arranged on the vehicle interior side of the functional sheet 30 is connected to the device that is arranged on the vehicle exterior side of the functional sheet 30, for example, as follows.

[0078] That is, an electric wire insertion hole 30a penetrating from the front to the back is formed in the functional sheet 30. An end of an electric wire 40 arranged on the vehicle interior side of the functional sheet 30 is passed through the electric wire insertion hole 30a and drawn out to the vehicle exterior side surface of the functional sheet 30. Then, a connector C at the end of the electric wire 40 is connector-connected to a device 70 arranged on the vehicle exterior side outside the vehicle exterior surface of the functional sheet 30.

[0079] It is also possible that some or all of the cabin-side equipment 70 is fixed to the roof panel 13 or the reinforcing bar 13a. In this case, for example, the cabin-side equipment 70 is fixed to the roof panel 13 or the reinforcing bar 13a as follows. That is, mounting holes 30b penetrating from the front to the back are formed in the functional sheet 30. Bolts or the like are passed through the mounting holes and the equipment 70 is screwed to the roof panel 13 or the reinforcing bar 13a.

[0080] <Effects of the First Embodiment> According to the wiring module 20 configured as described above, the conductive sheet 50A covering the first electric wire 40A is electrically connected to the conductive layer 32 in the functional sheet 30, so that noise generated in the first electric wire 40A can be easily suppressed by the functional sheet 30 and the conductive sheet 50A.

[0081] Furthermore, the conductive layer 32 is provided with a vehicle body side connection portion that can be electrically connected to the metal portion 13a of the vehicle body, whereby the conductive sheet 50A and the functional sheet 30 can be connected to the metal portion 13a of the vehicle body, and the shielding effect of the conductive sheet 50A and the functional sheet 30 is enhanced.

[0082] The electrical wiring board further includes a second electric wire 40B disposed on one side of the functional sheet 30, and a conductive sheet 50A is provided between the first electric wire 40A and the second electric wire 40B. As a result, the first electric wire 40A and the second electric wire 40B are separated by the conductive sheet 50A, so that noise problems between the first electric wire 40A and the second electric wire 40B are easily suppressed.

[0083] Furthermore, the conductive sheet 50A is interposed between the first electric wire 40A and the second electric wire 40B at the intersection, which makes it possible to easily suppress noise problems such as crosstalk between the first electric wire 40A and the second electric wire 40B even at the intersection.

[0084] Furthermore, the functional sheet 30 and the conductive sheet 50 are electrically connected via the fastener 60. It is not necessary to provide a member for electrically connecting the functional sheet 30 and the conductive sheet 50 separately from the fastener 60.

[0085] Furthermore, the conductive sheet 50B covers at least the portion of the connector C where the electric wire 40 extends from the terminal of the connector C. Since the conductive sheet 50B covers a portion of the electric wire 40, noise generated in the electric wire 40 connected to the connector C can also be easily suppressed.

[0086] Moreover, the conductive sheet 50 is provided so as to partially overlap the functional sheet 30. This allows the area in which the conductive sheet 50 is provided to be kept small.

[0087] Furthermore, the first electric wire 40A is attached to the functional sheet 30. This allows the first electric wire 40A to be handled integrally with the functional sheet 30 when the wiring module 20 is attached to the vehicle 10.

[0088] [Embodiment 2] A wiring module according to a second embodiment will be described. Fig. 8 is a plan view showing a wiring module 120 according to the second embodiment. Fig. 9 is a cross-sectional view taken along line IX-IX in Fig. 8. In the description of this embodiment, components similar to those described so far are given the same reference numerals and descriptions thereof will be omitted.

[0089] The wiring module 120 differs from the wiring module 20 in that the conductive sheet 150 is integrated with the conductive layer 32 of the functional sheet 30. In the wiring module 120, the conductive sheet 150 is provided by bending a part of the conductive layer 32 of the sheet constituting the functional sheet 30. As a result, the conductive sheet 150 and the conductive layer 32 are constituted by one sheet, and the electrical connection state between the conductive sheet 150 and the conductive layer 32 is stable. In addition, a connection member that electrically connects the conductive sheet 150 and the functional sheet 30 at the bent portion of the one sheet can be omitted, and an increase in the number of parts in the wiring module 120 can be suppressed. In the example shown in FIG. 9, the other layers 34 and 36 of the sheet constituting the functional sheet 30 remain on the conductive sheet 150 side. In other words, the soundproof layer 34 and the heat adjustment layer 36 overlap the conductive sheet 150. However, layers other than the conductive layer 32 of the sheet constituting the functional sheet 30 may be omitted in the conductive sheet 150.

[0090] When the sheets constituting the functional sheet 30 are bent, in the example shown in Fig. 8, slits S are formed in the sheets constituting the functional sheet 30. In the example shown in Fig. 8, two slits S extend inward from the outer edge of the sheets constituting the functional sheet 30. Then, a portion of the sheets constituting the functional sheet 30 that is sandwiched between the two slits S is folded back to form a portion that includes the conductive sheet 150. A recess is formed in the portion of the functional sheet 30 that is folded back to form the conductive sheet 150.

[0091] However, the shape of the slit S is not limited to the above. For example, one slit may be formed in a U-shape or C-shape on the inner side of a sheet constituting the functional sheet. A portion of the sheet constituting the functional sheet surrounded by the slit may be folded back to form a portion including a conductive sheet. In this case, a through hole is formed in the portion of the functional sheet that is folded back to form the conductive sheet.

[0092] Furthermore, when the sheets constituting the functional sheet 30 are bent, the slits S may not be formed. For example, the sheets constituting the functional sheet may have a part that protrudes in a convex shape toward the side. The convex protruding part of the sheets constituting the functional sheet may be folded back to form a part including the conductive sheet. In this case, recesses are unlikely to be formed in the part of the functional sheet that is folded back to form the conductive sheet.

[0093] Also, the wiring module 120 is the same as the wiring module 20 in that a conductive sheet 150 is provided between the first electric wire 40A and the second electric wire 40B. However, the wiring module 120 differs from the wiring module 20 in that the first electric wire 40A and the second electric wire 40B do not cross each other. Here, the conductive sheet 150 may be provided in a parallel path portion of the first electric wire 40A and the second electric wire 40B.

[0094] Specifically, the first electric wire 40A and the second electric wire 40B have a parallel path portion in a part of the path. In the parallel path portion, the first electric wire 40A and the second electric wire 40B are parallel to each other at a closer distance than in the other part of the path. Therefore, in the parallel path portion, noise problems are more likely to occur between the first electric wire 40A and the second electric wire 40B than in the other part of the path. Therefore, by providing a conductive sheet 150 between the first electric wire 40A and the second electric wire 40B in the parallel path portion, it is possible to easily suppress noise problems between the first electric wire 40A and the second electric wire 40B in the parallel path portion.

[0095] In the example shown in Fig. 8, the first electric wire 40A and the second electric wire 40B branch off at both ends of the parallel path section and extend in different directions. The first electric wire 40A and the second electric wire 40B may branch off at either end of the parallel path section and extend in different directions. In this case, a connector C may be provided at the other end of the parallel path section. In other words, the first electric wire 40A and the second electric wire 40B may have portions extending in parallel from the same connector C, and a conductive sheet 150 may be provided on this portion.

[0096] The first electric wire 40A and the second electric wire 40B may be provided with a first parallel path portion and a second parallel path portion. The first electric wire 40A and the second electric wire 40B are parallel to each other at a closer distance in the first parallel path portion than in the second parallel path portion. In this case, a conductive sheet 150 may be provided in the first parallel path portion of the first and second parallel path portions.

[0097] [Note] Equipment capable of optical communication may be provided as the equipment 70 arranged on the roof 14. For equipment capable of optical communication, an optical communication cable such as an optical fiber may be provided in the wiring module 20. The optical communication cable may be parallel to the first electric wire 40A or the second electric wire 40B in at least a portion of the route. Since noise problems caused by electromagnetic induction are unlikely to occur between optical communication cables and between an optical communication cable and an electric wire, a conductive sheet does not need to be provided between them.

[0098] [Variations] Although the electric wire 40 has been described so far as including the first electric wire 40A and the second electric wire 40B, this is not a required configuration. For example, the second electric wire 40B may be omitted.

[0099] Although the transmission member has been described so far as being the electric wire 40, this is not a required configuration. The transmission member may be a conductive member other than the electric wire 40. For example, the transmission member may be a bus bar. Also, for example, the transmission member may be a printed circuit on which a conductive pattern is printed. The conductive pattern may be printed directly on the functional sheet 30.

[0100] Although the conductive sheets 50 and 150 have been described so far as being provided so as to partially overlap the functional sheet 30, this is not a required configuration. The conductive sheets 50 and 150 may be provided so as to completely overlap the functional sheet 30.

[0101] Although the first electric wire 40A and the second electric wire 40B have been described above as being attached to the functional sheet 30, this is not a required configuration. One or both of the first electric wire 40A and the second electric wire 40B may not be attached to the functional sheet 30. The electric wire 40 that is not attached to the functional sheet 30 may be arranged along the functional sheet 30 by, for example, its own weight. Also, for example, the electric wire 40 that is not attached to the functional sheet 30 may be attached to a separate member on both outer sides of the functional sheet 30 and arranged along the functional sheet 30.

[0102] Although the above description has been given of the functional sheet 30 and the conductive sheets 50, 150 being provided with the fastener 60 for fastening them together, this is not a required configuration. The functional sheet 30 and the conductive sheets 50, 150 may be fixed together with a member other than the fastener 60. For example, the functional sheet 30 and the conductive sheets 50, 150 may be fixed together with a conductive adhesive. In this case, it is preferable that no other layer is provided in the functional sheet 30 between the conductive layer 32 and the conductive sheet 50, or between the conductive layer 32 and the metal portion.

[0103] The configurations described in the above embodiments and modifications can be combined as appropriate as long as they are not mutually inconsistent. [Explanation of symbols]

[0104] 10 Vehicles 12. Body 13 Roof Panel 13a Reinforcement bar 13h Antenna hole 14 Roof 16 Interior materials 20 Wiring Module 30 Functional Sheet 30a Wire insertion hole 30b Equipment mounting hole 32 Conductive layer 34 Soundproofing layer 36 Heat adjustment layer 40 Electric wire 40A First Wire 40B 2nd wire 42 core wire 44 Covering layer 50, 50A, 50B, 150 Conductive sheet 60 Fasteners 61 1st contact part 62 2nd contact part 63 Connecting part 70, 70A, 70B equipment 72a, 72b External communication antenna C Connector S slit

Claims

1. a functional sheet disposed between a panel and an interior member in a vehicle; A transmission member disposed on one surface side of the functional sheet; A conductive sheet covering a portion of the transmission member; Equipped with The functional sheet has a conductive layer and a layer having at least one of a heat adjusting function and a soundproofing function, the conductive sheet is electrically connected to the conductive layer, the conductive sheet and the functional sheet are separate sheets, the conductive sheet and the functional sheet are electrically connected to each other via an electrical connection member provided separately from the conductive sheet and the conductive layer, the conductive sheet is provided so as to partially overlap the functional sheet, A fastener made of a conductive material is provided as the electrical connection member, The fastener includes a first contact portion and a second contact portion that are interconnected; A wiring module, wherein the first contact portion contacts the conductive sheet and the second contact portion contacts the conductive layer to fasten the functional sheet and the conductive sheet together.

2. The wiring module according to claim 1 , The conductive layer is provided with a vehicle body side connection portion that can be electrically connected to a metal portion of a vehicle body.

3. The wiring module according to claim 1 or 2, Further, a second transmission member is disposed on one surface side of the functional sheet, The conductive sheet is provided between the transmission member and the second transmission member.

4. The wiring module according to claim 3, the transmission member and the second transmission member intersect at an intersection, a wiring module, the conductive sheet being interposed between the transmission member and the second transmission member at the intersection;

5. The wiring module according to any one of claims 1 to 4, a connector provided at an end of the transmission member is disposed on the functional sheet; The conductive sheet covers at least a portion of the connector from which the transmission member extends.

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