Wiring module

Abstract

The present invention aims to provide a technology that can easily suppress noise generated by transmission components in a wiring module in which transmission components are arranged along a sheet. The wiring module comprises a functional sheet positioned between a vehicle panel and an interior trim component, a transmission component positioned on one side of a surface of the functional sheet, and a conductive sheet covering a portion of the transmission component. The functional sheet comprises a conductive layer and a layer that performs at least one of thermal regulation and sound insulation, and the conductive sheet is electrically connected to the conductive layer.

Description

Technical Field

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

[0002] Patent Document 1 discloses a wiring member in which electric wires are wired on a sheet so as to cross each other.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-207816 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] In a wiring member in which electric wires are arranged along a sheet, noise is generated in the electric wires, and in the case of a plurality of electric wires, noise such as crosstalk may be generated.

[0008] Therefore, an object of the present invention is to provide a technology capable of easily suppressing noise generated in a transmission member in a wiring module in which the transmission member is arranged along a sheet.

[0009] Technical solutions to problems

[0010] The wiring module disclosed herein comprises: a functional sheet, which is arranged between a panel and an interior decorative component in a vehicle; a transmission component, which is arranged on one side of a surface relative to the functional sheet; and a conductive sheet, which covers a portion of the transmission component, wherein the functional sheet has a conductive layer and a layer that performs at least one of a thermal adjustment function and a sound insulation function, and the conductive sheet is electrically connected to the conductive layer.

[0011] Effects of the Invention

[0012] 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

[0013] Figure 1 It is a schematic perspective view showing a vehicle in which the wiring module is assembled.

[0014] Figure 2 This is an exploded perspective view showing the wiring module according to the first embodiment.

[0015] Figure 3 This is a perspective view showing the wiring module according to the first embodiment.

[0016] Figure 4 It will Figure 3 A top view obtained by enlarging a portion of the image.

[0017] Figure 5 It is along Figure 4 A sectional view obtained by cutting along line VV.

[0018] Figure 6 It is along Figure 4 A cross-sectional view taken along line VI-VI.

[0019] Figure 7 It will Figure 3 A top view obtained by enlarging another part of the image.

[0020] Figure 8 This is a plan view showing a wiring module according to the second embodiment.

[0021] Figure 9 It is along Figure 8 A cross-sectional view taken along line IX-IX. DETAILED DESCRIPTION

[0022] [Description of Embodiments of the Present Disclosure]

[0023] First, embodiments of the present disclosure will be described below.

[0024] The wiring module of the present disclosure is described as follows.

[0025] (1) A wiring module comprising: a functional sheet disposed between a panel and an interior trim member in a vehicle; a transmission member disposed on one side of a surface relative to the functional sheet; and a conductive sheet covering a portion of the transmission member, the functional sheet having a conductive layer and a layer that performs at least one of a thermal regulation function and a sound insulation function, the conductive sheet being electrically connected to the conductive layer. Thus, the conductive sheet covering a portion of the transmission member is electrically connected to the conductive layer in the functional sheet, thereby enabling the functional sheet and the conductive sheet to easily suppress noise generated in the transmission member.

[0026] (2) In the wiring module of (1), the conductive layer may be provided with a vehicle body-side connection portion, the vehicle body-side connection portion being electrically connected to a metal portion of the vehicle body. Thus, the conductive sheet and the functional sheet can be connected to the metal portion of the vehicle body, thereby improving the shielding effect of the conductive sheet and the functional sheet.

[0027] (3) In the wiring module of (1) or (2), the wiring module may further include a second transmission member disposed on one side of one surface relative to the functional sheet, with the conductive sheet provided between the transmission member and the second transmission member. Thus, since the transmission member and the second transmission member are separated by the conductive sheet, noise between the transmission member and the second transmission member can be easily suppressed.

[0028] (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 provided between the transmission member and the second transmission member at the intersection. Thus, noise such as crosstalk between the transmission member and the second transmission member can be easily suppressed at the intersection.

[0029] (5) In any one of the wiring modules described in (1) to (4), the conductive sheet may be provided by bending a portion of the conductive layer of a sheet constituting the functional sheet. Thus, the conductive sheet and the functional sheet are formed from a single sheet, thereby stabilizing the electrical connection between the conductive sheet and the functional sheet. Furthermore, at the portion formed by bending the single sheet, a connecting member electrically connecting the conductive sheet and the functional sheet can be omitted, thereby reducing the number of components in the wiring member.

[0030] (6) In any one of the wiring modules described in (1) to (5), the wiring module may further include a fastener formed of a conductive material, the fastener including a first contact portion and a second contact portion 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 to the conductive sheet. Thus, the functional sheet and the conductive sheet are electrically connected via the fastener. A component electrically connecting the functional sheet and the conductive sheet may not be provided separately from the fastener.

[0031] (7) In any one of the wiring modules described in (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 the portion of the connector from which the transmission member extends. This makes it possible to easily suppress noise generated at the transmission member connected to the connector.

[0032] [Details of the embodiments of the present disclosure]

[0033] Specific examples of the wiring module of the present disclosure will be described below with reference to the accompanying drawings. The present disclosure is not limited to these examples, but is defined by the claims and is intended to encompass all modifications within the meaning and scope of the claims.

[0034] [Implementation Method 1]

[0035] Next, the wiring module according to the first embodiment will be described.

[0036] <Regarding vehicles equipped with assembly line modules>

[0037] Figure 1 1 is a schematic three-dimensional diagram showing a vehicle 10 in which a wiring module 20 is assembled. The vehicle 10 includes a vehicle body 12. The vehicle body 12 is a portion constituting the outer shape of the vehicle 10. The vehicle body 12 may be a single-shell vehicle body or a vehicle body mounted on a ladder frame. Here, the vehicle body 12 includes side panels surrounding the vehicle interior, a roof panel 13, door panels for passengers to get on and off, a rear door panel for luggage storage, and the like. The vehicle body 12 may be formed of metal or resin. The vehicle body 12 may also be composed of a combination of metal and resin. The plate-shaped portion of the vehicle body 12 that covers the upper portion of the vehicle interior is the roof panel 13. The roof panel 13 may also be partially or entirely bent in order to form the outer shape of the vehicle body 12. The roof panel 13 may be formed of metal or resin. The roof panel 13 may also be composed of a combination of metal and resin. Here, an antenna hole 13h is formed in the roof panel 13 (see Figure 2 ).

[0038] Wiring module 20 is assembled in vehicle 10. Wiring module 20 is positioned between the panel and the interior trim. In this embodiment, wiring module 20 is assembled in roof 14, including roof panel 13. Wiring module 20 can also be assembled in other locations in vehicle 10, such as the entry and exit doors, rear doors, and instrument panel.

[0039] Figure 2 This is an exploded perspective view showing the wiring module 20 according to the first embodiment. Figure 3 This is a perspective view showing the wiring module 20 according to the first embodiment. Figure 2 This is a diagram of the wiring module 20 viewed from obliquely above. Figure 3 This is a diagram when the wiring module 20 is viewed obliquely from below.

[0040] exist Figure 2 , the figure shows a roof 14. As the roof 14, the figure shows the above-mentioned roof panel 13 and the interior decorative member 16. The interior decorative member 16 is a plate-shaped member formed of resin or the like. The interior decorative member 16 can also be bent partially or entirely to form the shape of a ceiling inside the vehicle interior. The interior decorative member 16 is mounted on the lower side relative to the roof panel 13. The interior decorative member 16 is the portion exposed to the vehicle interior. The interior decorative member 16 is sometimes also called a roof liner. In this embodiment, the wiring module 20 is arranged between the roof panel 13 and the interior decorative member 16.

[0041] <About the overall structure of the wiring module>

[0042] The wiring module 20 includes a functional sheet 30 , electric wires 40 , and a conductive sheet 50 .

[0043] The functional sheet 30 is assembled to the roof 14 so that it extends flatly relative to the roof 14. For example, the functional sheet 30 can be arranged so that it extends over 80% or more of the roof 14. Alternatively, for example, the functional sheet 30 can be arranged so that it extends over the entire headrests of multiple passenger seats within the vehicle interior. Since the functional sheet 30 is arranged so that it extends flat relative to the roof 14, the wires 40 and other components can be secured over as wide an area as possible relative to the roof 14. Furthermore, the functional sheet 30 can function over as wide an area as possible relative to the roof 14.

[0044] 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 in a manner that can be connected to the device 70. The device 70 sends or receives an electric signal via the electric wire 40. Alternatively, the device 70 receives power supply or distributes power via the electric wire 40. The connection between the electric wire 40 and the device 70 may be made via the connector C. The electric wire 40 may also be directly introduced into the device 70 without going through the connector C and directly connected to the electrical elements in the device 70. As the device 70, for example, an electronic control unit, a lamp (especially a map lamp, an interior lamp), a speaker, an interior camera, a monitor, a projection device, an external communication antenna, an indoor antenna, etc. are envisaged. Let Figure 2 The device 70A is an electronic control unit. The electronic control unit 70A is a device that controls each device 70 mounted on the roof 14 while communicating with other electronic control units installed in the vehicle 10. Figure 2 The device 70B in FIG. 1 is 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.

[0045] Here, there are a plurality of electric wires 40. The plurality of electric wires 40 are arranged along a path from the electronic control unit 70A toward the front and along a plurality of paths from the electronic control unit 70A toward the device 70.

[0046] The wires 40, which run forward from the electronic control unit 70A, are attached to the functional sheet 30 within the area of the functional sheet 30, thereby maintaining a constant path. The wires 40, which run forward from the electronic control unit 70A, extend outward from the front of the functional sheet 30. These wires 40 are arranged, for example, along the A-pillars of the vehicle 10 and are connected to other electronic control units, a power source, and the like in the vehicle 10.

[0047] The plurality of electric wires 40 along a plurality of paths from the electronic control unit 70A toward the plurality of devices 70 are attached to the functional sheet 30 so as to be held along a constant path. The paths of the plurality of electric wires 40 are arbitrary.

[0048] The conductive sheet 50 overlaps the functional sheet 30. The conductive sheet 50 provides electromagnetic shielding for the electric wires 40. Here, the conductive sheet 50 is partially overlapped with the functional sheet 30 for description.

[0049] The paths of the multiple wires 40 preferably do not intersect with each other. If the paths of the multiple wires 40 do not intersect with each other, the thickness of the wiring module 20 can be reduced due to the intersections. Furthermore, noise problems such as crosstalk between the wires 40 at the intersections can be reduced. However, the paths of the multiple wires 40 do carry the risk of intersections. In this case, by providing the conductive sheet 50 at the intersections, noise problems between the wires 40 at the intersections are less likely to occur.

[0050] <About each part of the wiring module>

[0051] Below, except Figures 1 to 3 In addition, refer to Figures 4 to 7 , each part of the wiring module 20 will be described in more detail. Figure 4 It will Figure 3 A top view obtained by enlarging a portion of the image. Figure 5 It is along Figure 4 A sectional view obtained by cutting along line VV. Figure 6 It is along Figure 4 A cross-sectional view taken along line VI-VI. Figure 7 It will Figure 3 A top view obtained by enlarging another part of the image.

[0052] Functional Sheets

[0053] like Figure 5As shown, the functional sheet 30 includes a conductive layer 32, a sound insulation layer 34, and a heat-adjusting layer 36. The conductive layer 32, the sound insulation layer 34, and the heat-adjusting layer 36 are stacked in this order. In the functional sheet 30, the conductive layer 32 is the outermost layer. Furthermore, when the functional sheet 30 has a multilayer structure of three or more layers, the order in which the layers including the conductive layer 32 are stacked is arbitrary. For example, multiple layers may be stacked with the conductive layer 32 as the intermediate layer. The functional sheet 30 is arranged so that the conductive layer 32 is the uppermost layer when placed on the vehicle 10. Alternatively, the functional sheet 30 may be arranged so that the conductive layer 32 is the lowermost layer when placed on the vehicle 10.

[0054] The conductive layer 32 is, for example, a radio wave shielding layer that functions as a radio wave shield. The radio wave shielding layer is a layer that prevents radio waves from being transmitted between one side of one surface and the other side of the functional sheet 30. The radio wave shielding layer can also be a layer formed by uniformly spreading a metal such as aluminum or iron.

[0055] The sound insulation layer 34 is a layer that provides sound insulation. It prevents sound from being transmitted between one side of the functional sheet 30 and the other side of the functional sheet 30. The sound insulation layer 34 can reflect sound or absorb sound energy as heat. Specifically, a sheet containing fine gaps, such as a nonwoven sheet or foam sheet, can be used as the sound insulation layer 34. Sound-absorbing paint can also be used as the sound insulation layer 34.

[0056] The heat-adjusting layer 36 is a layer that performs a heat-adjusting function. It regulates the heat that passes between one side of the functional sheet 30 on the indoor side and the other side of the functional sheet 30. The heat-adjusting layer 36 can also be a layer that prevents heat from being transferred between one side of the functional sheet 30 and the other side of the functional sheet 30. The heat-adjusting layer 36 can also have a lower thermal conductivity than other layers. The heat-adjusting layer 36 can also be a layer that reflects thermal radiation. The heat-adjusting layer 36 can also be a layer that radiates thermal energy. Specifically, a sheet containing fine gaps, such as a non-woven sheet or a foamed sheet, can be used as the heat-adjusting layer 36. Thermal insulation paint, heat-isolating paint, or heat-dissipating paint can also be used as the heat-adjusting layer 36.

[0057] It is not essential for the functional sheet 30 to include both the sound insulation layer 34 and the heat-adjusting layer 36. The functional sheet 30 may include only one of the sound insulation layer 34 and the heat-adjusting layer 36. Furthermore, the functional sheet 30 may include a single layer that performs both heat-adjusting and sound insulation functions, instead of the sound insulation layer 34 and the heat-adjusting layer 36. For example, a layer composed of a nonwoven sheet can function as both a heat-adjusting layer and a sound insulation layer.

[0058] In addition, each layer may be simply superimposed. Each layer may also be fixed by double-sided tape, adhesive, welding, etc. When each layer is fixed, the entire surface may be fixed or only a portion of the surface may be fixed.

[0059] Here, the functional sheet 30 also has a function of fixing components such as the wires 40 and the devices 70 arranged on the functional sheet 30 .

[0060] <Electric wire>

[0061] The electric wire 40 is an example of a transmission member. The electric wire 40 can be a single-core electric wire or a composite of multiple single-core electric wires. The single-core electric wire can be a general single-core electric wire having a core wire 42 and a coating 44 around the core wire 42, or it can be a bare wire, a shielded wire, an enameled wire, a nickel-chromium alloy wire, a coaxial wire, etc. As a composite of multiple single-core electric wires, it can be a cable with a sheath or a cable without a sheath. The sheathed cable has multiple single-core electric wires and a sheath covering the multiple single-core electric wires. As a cable without a sheath, for example, a cable formed by twisting and gathering multiple single-core electric wires like a twisted wire is used. As the use of the electric wire 40, it can also be various signal lines and various power lines, which are set according to the device 70.

[0062] The wires 40 are attached to the functional sheet 30. The wires 40 can be attached along a fixed path relative to the functional sheet 30, and the specific structure used for fixing is not particularly limited. Alternatively, the wires 40 can also be attached to the conductive sheet. In this case, a stronger fixation is possible.

[0063] For example, the wire 40 can be attached to one surface of the functional sheet 30. For example, the wire 40 can be welded (also called fusion-bonded) to one surface of the functional sheet 30. The welded portion formed thereby is a state where a portion of at least one of the wire 40 and the functional sheet 30 is melted and adhered to each other. Welding the wire 40 to the functional sheet 30 can be performed by ultrasonic welding or heat welding. Alternatively, the wire 40 and the functional sheet 30 can be welded by melting the surface of at least one of the wire 40 and the functional sheet 30 using a flux. Alternatively, for example, the wire 40 can be attached to the functional sheet 30 using an adhesive, double-sided tape, or the like. Alternatively, for example, the wire 40 can be sewn to the functional sheet 30 using sewing thread or the like. Alternatively, for example, with the wire 40 positioned on one surface of the functional sheet 30, adhesive tape can be applied across the wire 40 from one side of the one surface of the functional sheet 30 to attach the wire 40 to the one surface of the functional sheet 30.

[0064] The wire 40 does not need to be attached to only one surface of the functional sheet 30. The wire 40 may have 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 wire 40 may be attached in a manner extending from one surface to the other surface in the middle or at an edge of the functional sheet 30.

[0065] In addition, for example, the wire 40 can also be attached to the functional sheet 30 by being sandwiched between two sheets. For example, when the functional sheet 30 includes multiple layers, the wire 40 can also be sandwiched between the sheets constituting each layer. In addition, when other sheets are superimposed on the functional sheet 30, the wire 40 can also be sandwiched between the functional sheet 30 and the other sheets. In this case, the two sheets that sandwich the wire 40 can be attached to each other by welding or by using an adhesive or double-sided tape. In addition, when other sheets are superimposed on the functional sheet 30, the wire can also be attached to the other sheets. Thus, by superimposing the other sheets, various wires can be wired in a double or triple superimposed state.

[0066] The plurality of wires 40 include a first wire 40A and a second wire 40B. The first wire 40A and the second wire 40B intersect at an intersection. The first wire 40A and the second wire 40B are arranged on one side of a surface of the functional sheet 30. A conductive sheet 50 is provided between the first wire 40A and the second wire 40B. The first wire 40A and the second wire 40B are attached to the functional sheet 30.

[0067] like Figure 7 As shown, the connector C is arranged on the functional sheet 30 . Figure 7 The connector C shown is connected to the electronic control unit 70A. The connector C accommodates the end of the electric wire 40.

[0068] <Conductive Sheet>

[0069] The conductive sheet 50 is formed into a sheet shape from a conductive material. The conductive sheet 50 is formed from a metal such as aluminum or iron. Here, the conductive sheet 50 is described as having a single-layer structure. Other sheets may be superimposed on the conductive sheet 50. For example, a sheet having the same layered structure as the functional sheet 30 may be provided in place of the single-layer conductive sheet 50. In this case, the layer corresponding to the conductive layer in the sheet is the conductive sheet.

[0070] The conductive sheet 50 is electrically connected to the conductive layer 32 of the functional sheet 30. The conductive sheet 50 is partially overlapped with the functional sheet 30. Here, the conductive sheet 50 is provided at two separate locations. Hereinafter, when the two conductive sheets 50 need to be distinguished, one will be referred to as the conductive sheet 50A and the other as the conductive sheet 50B.

[0071] The conductive sheet 50A is positioned between the first and second wires 40A, 40B. At the intersection, the conductive sheet 50A is positioned between the first and second wires 40A, 40B. Here, the first wire 40A passes through the area enclosed by the functional sheet 30 and the conductive sheet 50A. The second wire 40B passes outside the area enclosed by the functional sheet 30 and the conductive sheet 50A. The second wire 40B passes over the conductive sheet 50A. The second wire 40B crosses the conductive sheet 50A. The second wire 40B is attached to the functional sheet 30 but not to the conductive sheet 50A. It is preferred that the second wire 40B be attached to the functional sheet 30 on both sides of the portion that crosses the conductive sheet 50A. The second wire 40B may also be attached to the conductive sheet 50A.

[0072] 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 may become 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. In addition, 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 may become a noise source, such as a power line. Figure 2 In the example shown, 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.

[0073] The conductive sheet 50B covers at least the portion of the connector C from which the power supply line 40 extends. Here, the conductive sheet 50B also entirely covers the connector C and the device 70A to which the connector C is connected.

[0074] The conductive sheet 50 is fastened to the functional sheet 30 by a fastener (jaw) 60 . Therefore, the wiring module 20 further includes a fastener 60 .

[0075] Fasteners

[0076] 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.

[0077] The first contact portion 61 contacts the conductive sheet 50. The second contact portion 62 contacts the conductive layer 32. Here, the first contact portion 61 presses the conductive sheet 50 against the functional sheet 30. Furthermore, the second contact portion 62 serves as a pressing piece that presses the functional sheet 30 against the conductive sheet 50. However, the first contact portion 61 and the second contact portion 62 only need to contact the conductive sheet 50 and the conductive layer 32, respectively, and do not need to be pressing pieces. The connecting portion 63 penetrates the functional sheet 30 and the conductive sheet 50.

[0078] Here, as Figure 6 As shown, the fastener 60 is formed by bending a rod-shaped member such as a wire. The middle portion of the rod-shaped member is set as the first contact portion 61. One end and the other end of the rod-shaped member are set as the second contact portion 62. The first contact portion 61 and the second contact portion 62 are set as the connecting portion 63. In addition, it can also be connected with Figure 6 In contrast, in the illustrated example, the middle portion of the rod-shaped member serves as the second contact portion 62, while one end and the other end of the rod-shaped member serve as the first contact portion 61. The fastener 60 may also be, for example, a staple. Alternatively, the fastener 60 may be formed by passing the ends of a U-shaped staple through the functional sheet 30 and the conductive sheet 50 and then bending and deforming the staple. Alternatively, the fastener 60, which serves as the connecting portion 63 that passes through the functional sheet 30 and the conductive sheet 50, may be a through-hole terminal or the like.

[0079] The connecting portion 63 does not need 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. A spring clip having a spring-shaped connecting portion may be used as the fastener 60.

[0080] The fastener 60 is a member in which the first contact portion 61 and the second contact portion 62 are integral before the functional sheet 30 and the conductive sheet 50 are fastened together. Alternatively, the fastener may be a separate member before the functional sheet 30 and the conductive sheet 50 are fastened together. The fastener only requires that the first contact portion and the second contact portion be connected to each other when the functional sheet 30 and the conductive sheet 50 are fastened together. Examples of the fastener include bolts and nuts.

[0081] <About the electrical connection structure between the functional sheet and the conductive sheet>

[0082] The conductive layer 32 in the functional sheet 30 is electrically connected to the conductive sheet 50. The wiring module 20 includes an electrically connected portion between the conductive layer 32 and the conductive sheet 50. This electrically connected portion can be a direct connection portion or an indirect connection portion. The wiring module 20 may also include either or both a direct connection portion and an indirect connection portion.

[0083] The directly connected portion is a portion where the conductive layer 32 and the conductive sheet 50 are directly connected without passing through other components. For example, when the conductive layer 32 and the conductive sheet 50 are formed by bending a single conductive sheet, the bent portion of the conductive sheet is considered to be the directly connected portion. Alternatively, for example, when the conductive layer 32 and the conductive sheet 50 are in contact, the contact portion between the conductive layer 32 and the conductive sheet 50 is considered to be the directly connected portion. When the conductive layer 32 and the conductive sheet 50 are in contact, the contact state between the conductive layer 32 and the conductive sheet 50 can also be maintained by welding the conductive layer 32 and the conductive sheet 50, for example. In addition, a retaining member can also be provided to maintain the conductive layer 32 and the conductive sheet 50 in contact. For example, the retaining member can also be a member that clamps and presses the functional sheet 30 and the conductive sheet 50, such as the fastener 60.

[0084] 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.

[0085] Here, the wiring module 20 includes an indirect connection portion. Here, the conductive layer 32 is electrically connected to the conductive sheet 50 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 conductive material. Thus, the conductive layer 32 is electrically connected to the conductive sheet 50 via the fastener 60. Here, the functional sheet 30 and the conductive sheet 50 are stacked in a manner such that the conductive layer 32 and the conductive sheet 50 face outward from each other, but this is not a necessary structure. For example, the conductive layer 32 can also be located in the middle layer of the functional sheet. Even in this case, if the second contact portion 62 is in contact with the conductive layer 32, the conductive layer 32 and the conductive sheet 50 can also be electrically connected via the fastener 60.

[0086] The electrically connected conductive layer 32 and conductive sheet 50 constitute a radio shield in the wiring module 20. When the wiring module 20 is assembled in the vehicle 10, the radio shield is grounded to a metal portion in the vehicle body. This metal portion in the vehicle body is also referred to as a vehicle body ground.

[0087] <Regarding the grounding structure of the radio wave shield and the vehicle body ground>

[0088] When the wiring module 20 is assembled in the vehicle 10, the functional sheet 30 is positioned between the interior trim member 16 and the roof panel 13. The functional sheet 30 is mounted with the conductive layer 32 facing the vehicle exterior. The functional sheet 30 can be fixed to the interior trim member 16 or simply placed on the interior trim member 16. For example, the functional sheet 30 can be fixed to the interior trim member 16 or the like using double-sided tape, adhesive, welding, or the like.

[0089] A vehicle body side connection portion is provided on the conductive layer 32. The vehicle body side connection portion is provided in a manner capable of being electrically connected to the vehicle body ground portion. The structure of the above-mentioned vehicle body side connection portion is not particularly limited. Here, as a vehicle body side connection portion, a connection member 80 is provided independently of the conductive layer 32. The above-mentioned 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 vehicle body ground portion. In addition, the fastener 60 can also be used as a connection member. That is, the second contact portion 62 that presses the conductive layer 32 can also be in direct contact with the vehicle body ground portion.

[0090] The vehicle body side connection portion may be a portion of the conductive layer 32. For example, the vehicle body side connection portion may be a conductive layer exposed portion where the conductive layer 32 is exposed. In this case, the conductive layer exposed portion is in direct contact with the vehicle body ground portion.

[0091] However, it is not essential to provide the vehicle-side connecting portion on the conductive layer 32. For example, if the functional sheet 30 and the conductive sheet 50 are not grounded to a metal portion in the vehicle body, the vehicle-side connecting portion may not be provided on the conductive layer 32. Alternatively, for example, the vehicle-side connecting portion may be provided on the conductive sheet 50.

[0092] exist Figure 5 and Figure 6, an example is shown of a vehicle body-side connection portion (here, the fastener 60 and the connection member 80) contacting a vehicle body grounding portion. Specifically, in this figure, a reinforcing rod 13a is provided on the vehicle cabin side relative to the roof panel 13. The reinforcing rod 13a is formed of a metal material. The reinforcing rod 13a is sometimes referred to as a steel member or a crossbeam. In the vehicle 10, the reinforcing rod 13a is provided, for example, so as to extend in the vehicle width direction. In the vehicle 10, a plurality of reinforcing rods 13a are provided, for example, at intervals along the front-to-back direction. The fastener 60 and the connection member 80 contact one of the reinforcing rods 13a. The fastener 60 and the connection member 80 are provided so as to be located below one of the reinforcing rods 13a. The fastener 60 and the connection member 80 then contact the lower surface of the reinforcing rod 13a. The fastener 60 and the connection member 80 may also contact the side of the reinforcing rod 13a. Furthermore, the metal portion in the vehicle body is not limited to the vehicle body frame but may also be a vehicle body panel, etc. For example, the vehicle body-side connection portion may also contact the roof panel 13.

[0093] When the wiring module 20 is assembled in the vehicle 10, the metal part 13a in the vehicle 10 is electrically connected to the radio wave shielding part in the wiring module 20. Therefore, it can also be understood that the present disclosure includes a grounding structure of the radio wave shielding part in the wiring module 20. The grounding structure of the radio wave shielding part in the wiring module 20 includes an electrically connected portion between the metal part 13a and the radio wave shielding part. The above-mentioned electrically connected portion may also be a directly connected portion in which the metal part 13a is directly connected to the conductive layer 32. The above-mentioned electrically connected portion may also be an indirectly connected portion in which the metal part 13a and the conductive layer 32 are connected via the connecting member 80.

[0094] <About devices incorporated into wiring modules>

[0095] Part or all of the above-mentioned devices 70 disposed on the vehicle roof 14 may also be incorporated into the wiring module 20. When part of the above-mentioned devices 70 are incorporated into the wiring module 20, any combination of devices 70 incorporated into the wiring module 20 is possible. For example, it is preferable to incorporate relatively lightweight devices 70, such as intercom antennas, into the wiring module 20.

[0096] The device 70 assembled in the wiring module 20 can also be mounted on, 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 mounted on the functional sheet 30 at a position that is suitable for the function achieved by the device 70. For example, if it is assumed that the device 70 is a map light, the device 70 is mounted on the portion of the functional sheet 30 that is arranged at a position diagonally above and in front of the front seat. In addition, for example, if it is assumed that the device 70 is an indoor antenna, the device 70 is mounted on the portion of the functional sheet 30 that is arranged above the front seat or the rear seat.

[0097] Regarding the positional relationship between functional sheets and equipment

[0098] Because the wiring module 20 includes the conductive layer 32, the external communication antenna unit 70B is preferably positioned outside the vehicle relative to the conductive layer 32. This prevents the conductive layer 32 from being positioned between the external communication antennas 73a, 73b and an external device (such as a base station) during wireless communication, allowing for smooth wireless communication between these devices. In this example, an antenna hole 13h is formed in the roof panel 13. The external communication antennas 73a, 73b are positioned corresponding to this hole 13h.

[0099] Furthermore, when the external communication antenna unit is disposed on the roof panel 13, it is preferable to form a hole in the roof panel 13 for passing the antenna wires, instead of the antenna hole 13h. Furthermore, when the roof panel 13 is formed of a 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 for passing the power wires in the roof panel 13.

[0100] Furthermore, since the wiring module 20 includes the conductive layer 32, the indoor antenna is preferably installed inside the vehicle interior relative to the conductive layer 32. Thus, radio waves radiated from the indoor antenna and indoor devices in the vehicle interior are shielded by the conductive layer 32 and are less likely to propagate outside the vehicle.

[0101] Assuming that the wiring module 20 includes the heat adjustment layer 36, the devices 70 preferably include a vehicle interior side device 70 provided inside the vehicle interior relative to the heat adjustment layer 36. Here, it is assumed that the devices 70 other than the external communication antenna unit 70B among the plurality of devices 70 are vehicle interior side devices 70.

[0102] The roof 14 can potentially heat up due to sunlight. Since the heat generated by sunlight is blocked by the heat-adjusting layer 36, the temperature inside the vehicle interior relative to the heat-adjusting layer 36 is less likely to rise than outside the vehicle interior. Therefore, if the device 70 is positioned inside the vehicle interior relative to the heat-adjusting layer 36, the temperature rise around the device 70 can be suppressed. Consequently, it is not necessary to use a device with a high heat resistance as the device 70.

[0103] Likewise, if the electric wires 40 are provided on the vehicle interior side relative to the heat-adjusting layer 36 , it is possible to suppress a temperature rise in the electric wires 40 . Therefore, as the electric wires 40 , it is not necessary to use electric wires with a high heat-resistant temperature.

[0104] In the present embodiment, there are devices 70 (e.g., an electronic control unit 70A) arranged on the vehicle interior side relative to the functional sheet 30 and devices 70 (e.g., an antenna unit 70B for external communication) arranged on the vehicle exterior side. In addition, in the present embodiment, the electric wires 40 are arranged on the vehicle interior side relative to the functional sheet 30. The electric wires 40 are connected to the devices 70 on both sides of the functional sheet 30. The devices 70 arranged on the vehicle interior side relative to the functional sheet 30 are directly connected to the electric wires 40 arranged on the vehicle interior side relative to the functional sheet 30 as they are. The devices arranged on the vehicle exterior side relative to the functional sheet 30 are connected to the electric wires 40 arranged on the vehicle interior side relative to the functional sheet 30, for example, as described below.

[0105] Specifically, a wire insertion hole 30a is formed in the functional sheet 30, extending through the front and back surfaces. The ends of the wires 40, which are located on the vehicle interior side relative to the functional sheet 30, are led through the wire insertion hole 30a to the vehicle exterior surface relative to the functional sheet 30. The connector C at the ends of the wires 40 is then connected to the device 70 located outside the vehicle exterior surface relative to the functional sheet 30.

[0106] Alternatively, some or all of the equipment 70 on the vehicle interior side may be fixed to the roof panel 13 or the reinforcing bar 13a. In this case, for example, the equipment 70 on the vehicle interior side is fixed to the roof panel 13 or the reinforcing bar 13a as follows. Specifically, mounting holes 30b are formed in the functional sheet 30, extending through the front and back surfaces. Bolts or the like are inserted into the mounting holes, and the equipment 70 is screwed to the roof panel 13 or the reinforcing bar 13a.

[0107] <Effects of Embodiment 1, etc.>

[0108] According to the wiring module 20 configured as described above, by electrically connecting the conductive sheet 50A covering the first electric wire 40A to the conductive layer 32 of the functional sheet 30 , noise generated in the first electric wire 40A can be easily suppressed by the functional sheet 30 and the conductive sheet 50A.

[0109] Furthermore, the conductive layer 32 is provided with a vehicle-side connecting portion that can be electrically connected to the metal portion 13a in the vehicle body. This allows the conductive sheet 50A and the functional sheet 30 to be connected to the metal portion 13a in the vehicle body, thereby enhancing the shielding effect of the conductive sheet 50A and the functional sheet 30.

[0110] Furthermore, a second electric wire 40B is provided 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. Thus, the first electric wire 40A and the second electric wire 40B are separated by the conductive sheet 50A, thereby easily suppressing noise problems between the first electric wire 40A and the second electric wire 40B.

[0111] Furthermore, the conductive sheet 50A is provided between the first electric wire 40A and the second electric wire 40B at the intersection. This makes it possible to easily suppress noise problems such as crosstalk between the first electric wire 40A and the second electric wire 40B at the intersection.

[0112] Furthermore, the functional sheet 30 and the conductive sheet 50 are electrically connected via the fastener 60. A member for electrically connecting the functional sheet 30 and the conductive sheet 50 other than the fastener 60 may not be provided.

[0113] Furthermore, the conductive sheet 50B covers at least the portion of the power supply wire 40 extending from the terminal of the connector C. Since the conductive sheet 50B covers a portion of the wire 40 , noise generated in the wire 40 connected to the connector C can be easily suppressed.

[0114] Furthermore, 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.

[0115] In addition, the first electric wires 40A are attached to the functional sheet 30. Thus, when the wiring module 20 is attached to the vehicle 10, the first electric wires 40A and the functional sheet 30 can be handled integrally.

[0116] [Implementation Method 2]

[0117] The wiring module according to the second embodiment will be described. Figure 8 This is a plan view showing a wiring module 120 according to the second embodiment. Figure 9 It is along Figure 8 In the description of this embodiment, the same reference numerals are given to the same components as those described above, and description thereof is omitted.

[0118] The wiring module 120 is different from the wiring module 20 in that the conductive sheet 150 and the conductive layer 32 of the functional sheet 30 are integrated. In the wiring module 120, the conductive sheet 150 is provided by bending a portion of the conductive layer 32 of the sheet constituting the functional sheet 30. Thus, the conductive sheet 150 and the conductive layer 32 are constituted by one sheet, so the electrical connection state between the conductive sheet 150 and the conductive layer 32 is stable. In addition, at the portion formed by bending one sheet, the connecting member electrically connecting the conductive sheet 150 and the functional sheet 30 can be omitted, and in the wiring module 120, an increase in the number of components can be suppressed. In addition, in Figure 9 In the example shown, the other layers 34 and 36 of the sheet material constituting the functional sheet 30 remain on the conductive sheet 150 side. That is, the sound-insulating layer 34 and the heat-adjusting layer 36 are superimposed on the conductive sheet 150. However, the conductive sheet 150 may also omit layers other than the conductive layer 32 of the sheet material constituting the functional sheet 30.

[0119] When the sheet constituting the functional sheet 30 is bent, Figure 8 In the example shown, slits S are formed in the sheet constituting the functional sheet 30. Figure 8 In the example shown, two slits S extend inward from the outer edge of the sheet constituting the functional sheet 30. The portion of the sheet constituting the functional sheet 30 sandwiched between the two slits S is then folded back to form a portion containing 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.

[0120] However, the shape of the slit S is not limited to the above. For example, a single slit may be formed in a U-shaped or C-shaped pattern inside the sheet constituting the functional sheet. The portion of the sheet constituting the functional sheet surrounded by the slit may then be folded back to form a portion containing the 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.

[0121] Furthermore, the slits S do not need to be formed when the sheet constituting the functional sheet 30 is folded. For example, a portion of the sheet constituting the functional sheet may be provided with a portion protruding convexly to the side. The portion constituting the functional sheet may then be folded back to form a portion containing the conductive sheet. In this case, the portion of the functional sheet that is folded back to form the conductive sheet is less likely to form a recess.

[0122] The wiring module 120 is similar to the wiring module 20 in that the conductive sheet 150 is provided between the first and second wires 40A, 40B. However, the wiring module 120 differs from the wiring module 20 in that the first and second wires 40A, 40B do not intersect. Preferably, the conductive sheet 150 is provided in the parallel path portion between the first and second wires 40A, 40B.

[0123] Specifically, a parallel path portion is provided in a portion of the path of the first and second electric wires 40A, 40B. In this parallel path portion, the first and second electric wires 40A, 40B run parallel to each other at a closer distance than in the other portions of the path. Therefore, noise issues are more likely to arise between the first and second electric wires 40A, 40B in this parallel path portion than in the other portions of the path. Therefore, by providing a conductive sheet 150 between the first and second electric wires 40A, 40B in this parallel path portion, noise issues between the first and second electric wires 40A, 40B can be easily suppressed in this parallel path portion.

[0124] exist Figure 8 In the example shown, the first and second wires 40A, 40B branch off at the ends of the parallel path and extend in different directions. Alternatively, the first and second wires 40A, 40B may branch off at one end of the parallel path and extend in different directions. In this case, the connector C may be provided at the other end of the parallel path. In other words, the first and second wires 40A, 40B may have the same portion extending in parallel from the connector C, with the conductive sheet 150 provided at that portion.

[0125] Alternatively, the first and second parallel paths may be provided on the first and second wires 40A, 40B. The first and second wires 40A, 40B run parallel to each other at a closer distance in the first parallel path than in the second parallel path. In this case, it is preferable to provide the conductive sheet 150 on the first parallel path.

[0126] [Note]

[0127] A device capable of optical communication may also be provided as the device 70 disposed on the vehicle roof 14. Optical communication cables, such as optical fibers, may also be provided in the wiring module 20 as devices capable of optical communication. The optical communication cables may also run parallel to the first electrical wire 40A or the second electrical wire 40B along at least a portion of the path. Since electromagnetic induction is less likely to cause noise between the optical communication cables and between the optical communication cables and the electrical wires, a conductive sheet may not be required between them.

[0128] [Modification]

[0129] So far, the electric wire 40 has been described as including the first electric wire 40A and the second electric wire 40B, but this is not an essential configuration. For example, the second electric wire 40B may be omitted.

[0130] While the transmission member has been described so far as being the wire 40, this is not a required configuration. The transmission member may be a conductive member other than the wire 40. For example, the transmission member may be a busbar. Furthermore, the transmission member may be a printed circuit having a conductive pattern printed thereon. The conductive pattern may also be printed directly on the functional sheet 30.

[0131] Although the conductive sheets 50 and 150 have been described so as to partially overlap the functional sheet 30 , this is not an essential configuration. The conductive sheets 50 and 150 may be provided so as to overlap the entire surface of the functional sheet 30 .

[0132] While the first and second electric wires 40A, 40B have been described as being attached to the functional sheet 30, this is not a required configuration. One or both of the first and second electric wires 40A, 40B may not be attached to the functional sheet 30. The electric wires 40 not attached to the functional sheet 30 may be arranged along the functional sheet 30, for example, due to their own weight. Furthermore, for example, the electric wires 40 not attached to the functional sheet 30 may be attached to other components outside of the functional sheet 30 and arranged along the functional sheet 30.

[0133] While the description thus far assumes that the functional sheet 30 and the conductive sheets 50 and 150 are secured with the fastener 60, this is not a required configuration. The functional sheet 30 and the conductive sheets 50 and 150 may be secured with a member other than the fastener 60. For example, the functional sheet 30 and the conductive sheets 50 and 150 may be secured with a conductive adhesive. In this case, preferably, no other layer is provided between the conductive layer 32 and the conductive sheet 50, or between the conductive layer 32 and the metal portion, in the functional sheet 30.

[0134] Furthermore, the configurations described in the above-mentioned embodiments and modifications can be appropriately combined as long as they do not contradict each other.

[0135] Description of labels

[0136] 10 vehicles

[0137] 12 Body

[0138] 13 Roof Panel

[0139] 13a Reinforcement rod

[0140] 13h Antenna hole

[0141] 14 Roof

[0142] 16 Interior decoration components

[0143] 20 Wiring Module

[0144] 30 functional sheets

[0145] 30a wire insertion hole

[0146] 30b Equipment mounting holes

[0147] 32 conductive layer

[0148] 34 sound insulation layer

[0149] 36 Heat Adjustment Layers

[0150] 40 wires

[0151] 40A 1st wire

[0152] 40B Second wire

[0153] 42 core wire

[0154] 44 cladding

[0155] 50, 50A, 50B, 150 conductive sheets

[0156] 60 Fasteners

[0157] 61 1st contact part

[0158] 62 Second contact part

[0159] 63 Connection

[0160] 70, 70A, 70B devices

[0161] 72a, 72b External communication antenna

[0162] C connector

[0163] S slit

Claims

1. A wiring module comprising: Functional sheet, which is placed between the panel and interior decoration components in the vehicle; a transmission member disposed on one side of one surface relative to the functional sheet; and a conductive sheet covering a portion of the transmission member, The functional sheet comprises a conductive layer and a layer having at least one of a heat regulating function and a sound insulating function. The conductive sheet is electrically connected to the conductive layer, The wiring module further includes a fastener formed of a conductive material. The fastener comprises a first contact portion and a second contact portion connected to each other, 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.

2. The wiring module according to claim 1, wherein: The conductive layer is provided with a vehicle body side connection portion, which can be electrically connected to a metal portion in the vehicle body.

3. The wiring module according to claim 1 or 2, wherein: The wiring module further includes a second transmission member disposed on one 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, wherein: The transmission member and the second transmission member intersect at an intersection. The conductive sheet is provided between the transmission member and the second transmission member at the intersection.

5. The wiring module according to claim 1 or 2, wherein: The conductive sheet is provided by bending a portion of the conductive layer of a sheet constituting the functional sheet.

6. The wiring module according to claim 1 or 2, wherein: The connector provided at the end of the transmission member is configured 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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