Wiring structure and power supply device

Abstract

To provide a wiring structure capable of minimizing electrical effects received from conductors of other adjacently stacked flat cables and of retaining the flexibility of the flat cable.SOLUTION: A wiring structure 1 includes a plurality of flat cables 10 and 20, which have conductors 11 and 21 disposed respectively and are stacked together, the wiring structure comprising: an adjustment-target-conductor-containing cable 10 including an adjustment target conductor 11 that is a conductor to be subjected to electrical characteristic adjustment; and an adjustment-non-target-conductor cable 20 stacked adjacent to the adjustment-target-conductor-containing cable 10, where the adjustment-non-target conductor 21 included in the adjustment-non-target-conductor cable 20 is disposed, in a width direction of the adjustment-non-target-conductor cable 20, at positions corresponding to the outside, in the width direction, of both end portions of the adjustment target conductor 11, in the width direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a wiring structure and a power supply device that include a flat cable having a conductor for transmitting a communication signal. [Background technology]

[0002] A known conventional wiring structure includes a plurality of flat cables having conductors for transmitting electric power or electric signals, and is formed by stacking the flat cables (see, for example, Patent Document 1).

[0003] When a flat cable constituting a wiring structure includes a high-speed communication conductor for transmitting electrical signals for high-speed communication, such as a differential transmission line, it is necessary to adjust the characteristic impedance of the high-speed communication conductor to a predetermined value in order to stabilize communication performance.

[0004] However, in conventional wiring structures, when the conductors of other flat cables stacked adjacent to each other in the stacking direction overlap with the high-speed communication conductors in the stacking direction, the characteristic impedance of the high-speed communication conductors may change due to the electrical influence of the conductors of the other flat cables.

[0005] For this reason, in conventional wiring structures, in order to adjust the characteristic impedance of the high-speed communication conductor to a predetermined value, a method has been considered in which a conductive layer is formed on the outer surface of a flat cable including the high-speed communication conductor, thereby constructing a shielding structure that blocks the electrical influence of other conductors. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2006-32042 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, the flat cable having the shield structure has a large thickness due to the conductive layer formed thereon, and therefore the flexibility of the flat cable may decrease.

[0008] An object of the present invention is to provide a wiring structure and a power supply device that can minimize the electrical influence from the conductors of other flat cables stacked adjacently and maintain the flexibility of the flat cable. [Means for solving the problem]

[0009] The wiring structure of the present invention is a wiring structure comprising a plurality of flat cables, each having a conductor arranged therein, which are stacked on top of each other, and comprises an adjustment-target conductor-containing cable including an adjustment-target conductor, which is a conductor whose electrical characteristics are to be adjusted, and an adjacent laminated cable stacked adjacent to the adjustment-target conductor-containing cable, and the conductor included in the adjacent laminated cable is arranged at a position in the width direction of the adjacent laminated cable that corresponds to the widthwise outer side of both widthwise ends of the adjustment-target conductor.

[0010] Furthermore, in the wiring structure of the present invention, it is preferable that in the adjustment target conductor-containing cable, the adjustment target conductors that form a pair of differential transmission lines are arranged at a distance from each other, and the conductor included in the adjacent laminated cable is arranged at a position corresponding to at least one of both widthwise outer sides of the adjustment target conductors that form a pair and between the adjustment target conductors that form a pair in the width direction of the adjacent laminated cable.

[0011] In the wiring structure according to the present invention, it is preferable that a conductive layer is formed on one surface side of the conductor-containing cable to be adjusted.

[0012] In the wiring structure according to the present invention, it is preferable that the conductor included in the adjacent laminated cable is the adjustment target conductor.

[0013] In addition, in the wiring structure according to the present invention, it is preferable that the cable including the conductor to be adjusted includes a ground conductor that is arranged widthwise outside the pair of the conductor to be adjusted and is connected to ground.

[0014] Moreover, the wiring structure according to the present invention preferably includes a holding member for holding the adjustment target conductor-containing cable and the adjacent laminated cable in a laminated state.

[0015] In addition, the power supply device of the present invention is a power supply device that transmits power or an electrical signal between a pair of objects that move relative to one another, and includes the wiring structure, a one-side member provided on one of the objects, and a other-side member provided on the other of the objects, wherein one end of the wiring structure is connected to the one-side member, and the other end of the wiring structure is connected to the other-side member. Effect of the Invention

[0016] According to the present invention, the conductor to be adjusted is less susceptible to the electrical effects of the conductors of the adjacent flat cables stacked thereon, making it possible to suppress changes in the electrical characteristics of the conductor to be adjusted. This eliminates the need to form a shielding structure in the flat cable, and makes it possible to maintain the flexibility of the flat cable. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a cross-sectional view of a wiring structure according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view for explaining in detail the structure of the conductor-containing cable to be adjusted according to the first embodiment of the present invention. [Diagram 3] 3(a) to 3(c) are cross-sectional views of other wiring structures according to the first embodiment of the present invention. [Figure 4] 4(a) to 4(d) are cross-sectional views of other wiring structures according to the first embodiment of the present invention. [Diagram 5] FIG. 5 is a cross-sectional view of a wiring structure according to a second embodiment of the present invention. [Figure 6] FIG. 6 is a cross-sectional view of a wiring structure according to a third embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view of a wiring structure according to a fourth embodiment of the present invention. [Figure 8] FIG. 8 is a cross-sectional view of a wiring structure according to a fifth embodiment of the present invention. [Figure 9] FIG. 9 is a cross-sectional view of a wiring structure according to a sixth embodiment of the present invention. [Figure 10] 10(a) to 10(c) are cross-sectional views of a wiring structure according to a seventh embodiment of the present invention. [Figure 11] 11(a) to 11(c) are cross-sectional views of a conductor according to an eighth embodiment of the present invention. [Figure 12] FIG. 12 is a cross-sectional view of a wiring structure according to a ninth embodiment of the present invention. [Figure 13] FIG. 13 is an overall perspective view of a power supply device according to a tenth embodiment of the present invention. [Figure 14] FIG. 14 is a perspective view illustrating the internal structure of a power supply device according to a tenth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] First Embodiment Figures 1 to 4 show a first embodiment of the present invention. Figure 1 is a cross-sectional view of a wiring structure, Figure 2 is a cross-sectional view explaining in detail the structure of a conductor-containing cable to be adjusted, and Figures 3 and 4 are cross-sectional views of other wiring structures in the first embodiment.

[0019] The wiring structure 1 of the present invention is applied to, for example, a steering roll connector as a rotary connector provided at a connecting portion between a steering column on the vehicle body side and a steering shaft on the steering wheel side in a vehicle, a slide door harness provided at a connecting portion between the vehicle body side and a slide door, a slide seat harness provided at a connecting portion between the vehicle body side and a slide seat, or a stationary portion such as the inside of an ECU or a connection between ECUs. The movable portion such as a slide seat harness provided at a connecting portion between the vehicle body side and the slide seat is, for example, a wiring support portion described in JP 2010-149807 A. In addition, the wiring structure 1 of the present invention is applicable to a device that needs to communicate between one device and another device, not limited to a vehicle. In addition, the wiring structure 1 of the present invention is applicable to a steering device that can store an operating member such as a steering wheel. The steering device that can store an operating member such as a steering wheel is, for example, a steering device described in JP 2021-169259 A. For example, the wiring structure of the present invention can be applied to a steering roll connector as a rotary connector (not shown) provided on the operation support part of JP 2021-169259 A, and wiring (not shown) between the operation support part and the holding part.

[0020] The wiring structure 1 has a size of, for example, 1000 mm in the extending direction, and constitutes a part of each of a power supply circuit for transmitting power between one device and another device, and a communication circuit for transmitting an electric signal. Here, the communication circuit including a pair of adjustment target conductors, which will be described later, whose characteristic impedance is to be adjusted, is used, for example, in differential signal transmission of LVDS (Low Voltage Differential Signaling), which performs high-speed transmission using low-voltage and low-amplitude signals, and signal transmission in communication standards such as CAN (Controller Area Network), CAN FD (Flexible Data Rate), CAN XL (Extra Long), and Ethernet. The transmission speed of the communication signal transmitted through the wiring structure 1 is generally 100 Mbps or less, but may be higher than 100 Mbps as necessary.

[0021] 1, the wiring structure 1 includes a cable 10 including a pair of conductors 11 to be adjusted, which are conductors to be adjusted in characteristic impedance as an electrical characteristic, and a cable 20 for a conductor not to be adjusted, which is laminated adjacent to the cable 10 including a conductor to be adjusted, and which includes a plurality of conductors not to be adjusted 21, which are conductors not to be adjusted in characteristic impedance. Here, the cable 20 for a conductor not to be adjusted is a cable laminated adjacent to the cable 10 including a conductor to be adjusted.

[0022] The cable 10 containing a conductor to be adjusted is a so-called flexible flat cable having flexibility, and is formed in a belt shape by covering a pair of conductors to be adjusted 11 with an insulator 12 .

[0023] The pair of conductors to be adjusted 11 are each made of a highly conductive material such as tough pitch copper. The pair of conductors to be adjusted 11 are each formed into a rectangular shape with a cross section of, for example, a width of 0.8 mm and a thickness of 35 μm, and are arranged at an interval of 0.6 mm from each other in the width direction of the cable 10 containing the conductor to be adjusted.

[0024] 2, the insulator 12 has a first base material 12a and a second base material 12b in the form of a film made of an insulating material such as PET that covers the pair of conductors to be adjusted 11 from both sides in the thickness direction of the conductor-containing cable 10, and a first adhesive 12c and a second adhesive 12d that are polyester-based adhesives for bonding the first base material 12a and the second base material 12b to each other in a state in which the conductors to be adjusted 11 are arranged. Here, the thickness dimension of each of the first base material 12 and the second base material 12b is, for example, 25 μm, and the thickness dimension of each of the first adhesive 12c and the second adhesive 12d is, for example, 20 μm.

[0025] Here, the characteristic impedance of the pair of adjustment target conductors 11 is adjusted to, for example, 100±10 Ω. The characteristic impedance is determined by the width and thickness dimensions of the adjustment target conductors 11, the interval between the pair of adjustment target conductors 11, the thickness of the insulator 12 covering the pair of adjustment target conductors 11, and the relative dielectric constant of the insulator 12.

[0026] The cable 20 for the conductor not to be adjusted is a so-called flexible flat cable having flexibility, and is formed in a band shape by covering a plurality of conductors not to be adjusted 21 with an insulator 22. The cable 20 for the conductor not to be adjusted has the same width dimension as the width dimension of the cable 10 containing a conductor to be adjusted, and is arranged such that both ends in the width direction are aligned in the stacking direction when stacked on the cable 10 containing a conductor to be adjusted.

[0027] The plurality of non-adjustment conductors 21 are made of a material having high conductivity such as tough pitch copper, similar to the adjustment-target conductor 11. Each of the plurality of non-adjustment conductors 21 is a conductor used as a power supply line for transmitting electric power, or a conductor used as a communication line that does not require adjustment of the characteristic impedance.

[0028] Similar to the insulator 12 of the cable 10 containing a conductor to be adjusted, the insulator 22 comprises a pair of film-like substrates made of an insulating material such as PET that cover the pair of non-adjustment conductors 21 from both sides in the thickness direction of the cable 20 for a conductor to be adjusted, and a pair of polyester-based adhesives for joining the pair of substrates to each other while the pair of non-adjustment conductors 21 are positioned.

[0029] In addition, the multiple conductors 21 not to be adjusted are each arranged at a position in the width direction of the cable for the conductor not to be adjusted 20 that corresponds to a widthwise outer side of both widthwise ends of the conductor to be adjusted 11 when the cable for the conductor not to be adjusted 20 is stacked on the cable containing the conductor to be adjusted 10.

[0030] That is, the multiple non-adjustment target conductors 21 are arranged in the width direction of the cable 20 for the conductor not to be adjusted, at positions corresponding to both widthwise outer sides of the pair of adjustment target conductors 11 and between the pair of adjustment target conductors 11.

[0031] The wiring structure 1 configured as above connects one device to another device with the cable 10 containing a conductor to be adjusted and the cable 20 for a conductor not to be adjusted stacked on top of each other. This forms a power supply circuit and a communication circuit between the one device and the other device. The cable 10 containing a conductor to be adjusted of the wiring structure 1 forms a differential transmission line consisting of a pair of conductors to be adjusted 11.

[0032] Here, the multiple non-adjustment conductors 21 in the cable 20 for the conductor not to be adjusted are arranged in a position in the width direction of the cable 20 for the conductor not to be adjusted that corresponds to a position outside both ends in the width direction of the conductor to be adjusted 11 when stacked on the cable 10 containing a conductor to be adjusted. Therefore, the multiple non-adjustment conductors 21 of the cable 20 for the conductor not to be adjusted that are stacked adjacent to the cable 10 containing a conductor to be adjusted do not overlap the pair of conductors 11 in the thickness direction of the cable 10 containing a conductor to be adjusted, and a change in characteristic impedance due to the influence of the conductors not to be adjusted 21 is suppressed.

[0033] Thus, according to the wiring structure of this embodiment, the wiring structure 1 includes a plurality of flat cables 10, 20, each having a conductor 11, 21 arranged therein, which are stacked on top of each other, and includes a cable 10 containing a conductor to be adjusted, which includes a conductor to be adjusted 11, which is a conductor whose electrical characteristics are to be adjusted, and a cable 20 for a conductor not to be adjusted, which is stacked adjacent to the cable 10 containing a conductor to be adjusted, and the conductor not to be adjusted 21 included in the cable for a conductor not to be adjusted 20 is arranged at a position corresponding to the widthwise outer side of both widthwise ends of the conductor to be adjusted 11 in the width direction of the cable for a conductor not to be adjusted 20.

[0034] As a result, the conductor to be adjusted 11 is less susceptible to the electrical influence of the conductor not to be adjusted 21 of the cable for conductor not to be adjusted 20 stacked adjacently, and it is possible to suppress changes in the electrical characteristics of the conductor to be adjusted 11. Therefore, there is no need to configure a shielding structure for the cable containing a conductor to be adjusted 10 or the cable for conductor not to be adjusted 20, and it is possible to maintain the flexibility of the cable containing a conductor to be adjusted 10 and the cable for conductor not to be adjusted 20.

[0035] In the first embodiment, a wiring structure 1 is shown in which a plurality of non-adjustment conductors 21 of a cable for conductors not to be adjusted 20 stacked adjacent to a cable containing conductors to be adjusted 10 having a pair of conductors to be adjusted 11 are arranged at positions corresponding to both widthwise outer sides of the pair of adjustment conductors 11 and all between the pair of adjustment conductors 11 in the width direction of the cable for conductors not to be adjusted 20, but this is not limited to this.

[0036] For example, as shown in Fig. 3(a), the multiple non-adjustment conductors 21 may be arranged only at positions corresponding to one outside of the pair of adjustment target conductors 11 in the width direction of the cable 20 for the first non-adjustment conductor. Also, as shown in Fig. 3(b), the multiple non-adjustment conductors 21 may be arranged only at positions corresponding to between the pair of adjustment target conductors 11 in the width direction of the cable 20 for the first non-adjustment conductor. Furthermore, as shown in Fig. 3(c), the multiple non-adjustment conductors 21 may be arranged only at positions corresponding to the other outside of the pair of adjustment target conductors 11 in the width direction of the cable 20 for the first non-adjustment conductor.

[0037] That is, in the cable 10 containing a conductor to be adjusted, a pair of conductors to be adjusted 11 constituting a differential transmission line are arranged at a distance from each other, and it is preferable that the conductors not to be adjusted 21 included in the cable 20 for a conductor not to be adjusted adjacent to the cable 10 containing a conductor to be adjusted are arranged at a position corresponding to at least one of both widthwise outer sides of the pair of conductors to be adjusted 11 and between the pair of conductors to be adjusted 11 in the width direction of the cable 20 for a conductor not to be adjusted.

[0038] 3(a) to 3(c) includes a cable 10 containing a conductor to be adjusted 11, a cable for a first conductor not to be adjusted 20 laminated adjacent to the cable 10 containing a conductor to be adjusted 11 and consisting of a plurality of conductors not to be adjusted 21 and insulators 22, and a cable for a second conductor not to be adjusted 30 laminated adjacent to the cable 20 for a first conductor not to be adjusted 20 and consisting of a plurality of conductors not to be adjusted 31 and insulators 32. The cable 20 for the first conductor not to be adjusted 20 is an adjacent laminated cable laminated adjacent to the cable 10 containing a conductor to be adjusted.

[0039] The second cable 30 for a conductor not to be adjusted is laminated without being adjacent to the cable 10 containing a conductor to be adjusted. For this reason, the conductor 31 for a conductor not to be adjusted does not necessarily have to be disposed at a position corresponding to the widthwise outer side of both ends of the conductor 11 to be adjusted in the width direction of the cable 30 for a conductor not to be adjusted, but is preferably disposed at a position corresponding to the widthwise outer side of both ends of the conductor 11 to be adjusted.

[0040] In addition, in the first embodiment, a wiring structure 1 was shown that includes a cable 10 containing a conductor to be adjusted, which includes a conductor to be adjusted 11, and a cable for a conductor not to be adjusted, which is laminated on one side of the cable 10 containing a conductor to be adjusted, and which includes a conductor not to be adjusted 21, but this is not limited to this.

[0041] 4(a) to 4(d), the wiring structure 1 may include a cable 10 containing a conductor to be adjusted 11, a cable for a first conductor not to be adjusted 20 laminated on one surface of the cable 10 containing a conductor to be adjusted 21 and an insulator 22, and a cable for a second conductor not to be adjusted 30 laminated on the other surface of the cable 10 containing a conductor to be adjusted 31 and an insulator 32. Here, the cable 20 for the first conductor not to be adjusted and the cable 30 for the second conductor not to be adjusted 30 are adjacent laminated cables laminated adjacent to the cable 10 containing a conductor to be adjusted.

[0042] In the wiring structure 1 shown in Fig. 4(a), the cable 10 containing a conductor to be adjusted has a non-adjustment conductor 13 arranged on the widthwise outer side of a pair of the conductor to be adjusted 11. In addition, in the wiring structure 1 shown in Fig. 4(a), the non-adjustment conductors 21, 31 are arranged only at positions corresponding to both widthwise outer sides of the pair of the conductor to be adjusted 11 in the width direction of the first and second cables for non-adjustment conductors 20, 30.

[0043] In addition, the wiring structure 1 shown in Figure 4 (b) has the non-adjustment target conductors 21, 31 arranged only at positions corresponding to both widthwise outsides of the pair of adjustment target conductors 11 in the width direction of the first and second non-adjustment target conductor cables 20, 30.

[0044] Furthermore, in the wiring structure 1 shown in Figures 4(c) and 4(d), the non-adjustment conductors 21, 31 are arranged only at positions corresponding to between the pair of adjustment-target conductors 11 in the width direction of the first and second non-adjustment conductor cables 20, 30.

[0045] <Second embodiment> 5 is a cross-sectional view of a wiring structure according to a second embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals.

[0046] As shown in FIG. 5, in the wiring structure 1 of the present embodiment, a cable 10 including conductors to be adjusted has three pairs of conductors to be adjusted 11a, 11b, and 11c each constituting a differential transmission line.

[0047] The wiring structure 1 also includes a first cable for an unadjusted conductor 20, which is made up of a plurality of unadjusted conductors 21 and insulators 22 and is laminated adjacent to one surface of the cable for an adjusted conductor-containing conductor 10, and a second cable for an unadjusted conductor 30, which is made up of a plurality of unadjusted conductors 31 and insulators 32 and is laminated adjacent to the other surface of the cable for an adjusted conductor-containing conductor 10. Here, the first cable for an unadjusted conductor 20 and the second cable for an unadjusted conductor 30 are adjacent laminated cables laminated adjacent to the cable for an adjusted conductor-containing conductor 10.

[0048] The multiple non-adjustment target conductors 21, 31 are respectively arranged at positions corresponding to at least one of the widthwise outer sides of the pair of adjustment target conductors 11a, 11b, 11c and between the pair of adjustment target conductors 11a, 11b, 11c in the width direction of the first and second non-adjustment target conductor cables 20, 30.

[0049] Thus, according to the wiring structure of this embodiment, as in the first embodiment, the conductor to be adjusted 11 is less susceptible to the electrical influence of the conductors not to be adjusted 21, 31 of the adjacently stacked first and second cables for conductors not to be adjusted 20, 30, and it is possible to suppress changes in the electrical characteristics of the conductor to be adjusted 11. Therefore, there is no need to configure a shielding structure for the cable 10 containing a conductor to be adjusted or the cables 20, 30 for the first and second conductors not to be adjusted, and it is possible to maintain the flexibility of the cable 10 containing a conductor to be adjusted and the cables 20, 30 for the first and second conductors not to be adjusted.

[0050] <Third embodiment> 6 is a cross-sectional view of a wiring structure according to a third embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals.

[0051] As shown in FIG. 6, the wiring structure 1 of this embodiment has an adjustment-target-conductor-containing cable 10 having three pairs of adjustment-target conductors 11a, 11b, and 11c that each constitute a differential transmission line, and a number of non-adjustment-target conductors 13 are arranged on the widthwise outside of the pairs of adjustment-target conductors 11a, 11b, and 11c.

[0052] The wiring structure 1 also includes a first cable for an unadjusted conductor 20, which is made of a plurality of unadjusted conductors 21 and insulators 22 and is laminated adjacent to one surface of the cable for an adjusted conductor-containing conductor 10, and a second cable for an unadjusted conductor 30, which is made of a plurality of unadjusted conductors 31 and insulators 22 and is laminated adjacent to the other surface of the cable for an adjusted conductor-containing conductor 10. Here, the first cable for an unadjusted conductor 20 and the second cable for an unadjusted conductor 30 are adjacent laminated cables laminated adjacent to the cable for an adjusted conductor-containing conductor 10.

[0053] The multiple non-adjustment target conductors 21, 31 are respectively arranged in the first and second non-adjustment target conductor cables 20, 30 at positions corresponding to at least one of the widthwise outer sides of the pair of adjustment target conductors 11a, 11b, 11c and between the pair of adjustment target conductors 11a, 11b, 11c.

[0054] Thus, according to the wiring structure of this embodiment, as in the first embodiment, the conductor to be adjusted 11 is less susceptible to the electrical influence of the conductors not to be adjusted 21, 31 of the adjacently stacked first and second cables for conductors not to be adjusted 20, 30, and it is possible to suppress changes in the electrical characteristics of the conductor to be adjusted 11. Therefore, there is no need to configure a shielding structure for the cable 10 containing a conductor to be adjusted or the cables 20, 30 for the first and second conductors not to be adjusted, and it is possible to maintain the flexibility of the cable 10 containing a conductor to be adjusted and the cables 20, 30 for the first and second conductors not to be adjusted.

[0055] <Fourth embodiment> 7 is a cross-sectional view of a wiring structure according to a fourth embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals.

[0056] 7, the wiring structure 1 of the present embodiment includes a conductor-containing cable 10 having a pair of conductors 11 to be adjusted and a conductive layer 14 disposed over the entire surface of one side of the conductor-containing cable 10 to be adjusted. The conductive layer 14 functions as a shield that blocks the electrical influence of other conductors located outside the one side of the conductor-containing cable 10 to be adjusted.

[0057] The wiring structure 1 includes a plurality of first cables 20 for an unadjusted conductor, each consisting of one or more unadjusted conductors 21 and insulators 22, laminated on one surface of the cable 10 for containing a conductor to be adjusted, and a plurality of second cables 30 for an unadjusted conductor, each consisting of one or more unadjusted conductors 31 and insulators 32, laminated on the other surface of the cable 10 for containing a conductor to be adjusted. Of the plurality of second cables 30 for an unadjusted conductor, the second cable 30 for an unadjusted conductor that is closest to the cable 10 for containing a conductor to be adjusted is an adjacent laminated cable that is laminated adjacent to the cable 10 for containing a conductor to be adjusted.

[0058] The non-adjustable conductors 21 of the multiple first non-adjustable conductor cables 20 are located on the side on which the conductive layer 14 of the adjustment-target conductor-containing cable 10 is formed, and therefore can be positioned at any position in the width direction of the first non-adjustable conductor cable 20.

[0059] The non-adjustable conductors 31 of the multiple second non-adjustable conductor cables 30 are arranged in positions in the width direction of the second non-adjustable conductor cables 30 corresponding to at least one of the widthwise outer sides of the pair of adjustment target conductors 11 and between the pair of adjustment target conductors 11.

[0060] Here, among the multiple cables 30 for second conductors not to be adjusted, the conductors not to be adjusted 31 included in the cable 30 for second conductors not to be adjusted that is stacked without being directly adjacent to the cable 10 containing the conductor to be adjusted does not necessarily have to be positioned at a position corresponding to the widthwise outer side of both widthwise ends of the conductor to be adjusted 11 in the width direction of the cable 30 for second conductors not to be adjusted, but it is preferable that it is positioned at a position corresponding to the widthwise outer side of both widthwise ends of the conductor to be adjusted 11.

[0061] Thus, according to the wiring structure of this embodiment, as in the first embodiment, the conductor to be adjusted 11 is less susceptible to the electrical influence of the conductor not to be adjusted 31 of the cable for the second conductor not to be adjusted 30 stacked adjacently, and it is possible to suppress changes in the electrical characteristics of the conductor to be adjusted 11. Therefore, there is no need to configure a shielding structure for the cable for adjustment-target conductor-containing 10 or the cable for the second conductor not to be adjusted 30, and it is possible to maintain the flexibility of the cable for adjustment-target conductor-containing 10 and the cable for the second conductor not to be adjusted 30.

[0062] It is also preferable that a conductive layer 14 is formed on one surface side of the adjustment target conductor-containing cable 10 having the adjustment target conductor 11.

[0063] This makes it possible to position the non-adjustment conductor 21 at any position in the width direction of the first non-adjustment conductor cable 20, which is laminated on one side of the adjustment-target conductor-containing cable 10, thereby improving the design freedom of the wiring structure 1.

[0064] <Fifth embodiment> 8 is a cross-sectional view of a wiring structure according to a fifth embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals.

[0065] As shown in Fig. 8, the wiring structure 1 of the present embodiment includes a plurality of cables 10 containing conductors to be adjusted, which are stacked on top of each other; a first cable 20 for a conductor not to be adjusted, which is made of a plurality of conductors not to be adjusted 21 and an insulator 22 and is stacked adjacent to one side of the plurality of cables 10 containing conductors to be adjusted in the stacking direction; and a second cable 30 for a conductor not to be adjusted, which is made of a plurality of conductors not to be adjusted 31 and an insulator 32 and is stacked adjacent to the other side of the plurality of cables 10 containing conductors to be adjusted in the stacking direction. Here, the plurality of cables 10 containing conductors to be adjusted are adjacent laminated cables stacked adjacent to any of the cables 10 containing conductors to be adjusted. Also, the first cable 20 for a conductor not to be adjusted and the second cable 30 for a conductor not to be adjusted are adjacent laminated cables stacked adjacent to the cable 10 containing conductors to be adjusted that is located on the outer side of the plurality of cables 10 containing conductors to be adjusted in the stacking direction.

[0066] The conductor to be adjusted 11 of one conductor-containing cable 10 to be adjusted is arranged at a position corresponding to at least one of both widthwise outer sides of a pair of conductors to be adjusted 11 of another conductor-containing cable 10 to be adjusted that is stacked adjacent to the one conductor-containing cable 10 to be adjusted, and between the pair of conductors to be adjusted 11.

[0067] The multiple non-adjustment conductors 21, 31 of the first and second cables 20, 30 for non-adjustment conductors are arranged at positions corresponding to at least one of both widthwise outer sides of a pair of adjustment target conductors 11 and between the pair of adjustment target conductors 11 in the width direction of the first and second cables 20, 30 for non-adjustment conductors.

[0068] Thus, according to the wiring structure of this embodiment, as in the first embodiment, the conductor to be adjusted 11 is less susceptible to the electrical influences of the conductor to be adjusted 11 of another cable 10 containing a conductor to be adjusted or the conductors not to be adjusted 21, 31 of the cables 20, 30 for the first and second conductors not to be adjusted that are stacked adjacent to it, and it is possible to suppress changes in the electrical characteristics of the conductor to be adjusted 11. Therefore, there is no need to configure a shielding structure for the cable 10 containing a conductor to be adjusted and the cables 20, 30 for the first and second conductors not to be adjusted, and it is possible to maintain the flexibility of the cable 10 containing a conductor to be adjusted and the cables 20, 30 for the first and second conductors not to be adjusted.

[0069] In addition, it is preferable that the conductor of another cable 10 containing a conductor to be adjusted adjacent to one cable 10 containing a conductor to be adjusted 11 is the conductor to be adjusted 11 .

[0070] This makes it possible for the adjustment target conductors 11 of the adjustment target conductor-containing cables 10 that are stacked adjacently to be less susceptible to electrical influence from each other, making it possible to suppress changes in the electrical characteristics of the adjustment target conductor 11.

[0071] Sixth embodiment 9 is a cross-sectional view of a wiring structure according to a sixth embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals.

[0072] In the wiring structure 1 of this embodiment, the cable 10 containing the conductor to be adjusted has a pair of conductors to be adjusted 11, and also has ground conductors 15 that are arranged on both widthwise outer sides of the pair of conductors to be adjusted 11 and connected to ground.

[0073] The ground conductor 15, like the conductor to be adjusted 11, is made of a material having high conductivity, such as tough pitch copper.

[0074] Thus, according to the wiring structure of this embodiment, as in the first embodiment, the conductor to be adjusted 11 is less susceptible to the electrical influence of the conductor not to be adjusted 21 of the cable for conductor not to be adjusted 20 stacked adjacently, and it is possible to suppress changes in the electrical characteristics of the conductor to be adjusted 11. Therefore, there is no need to form a shielding structure for the cable 10 containing a conductor to be adjusted or the cable 20 for a conductor not to be adjusted, and it is possible to maintain the flexibility of the cable 10 containing a conductor to be adjusted and the cable 20 for a conductor not to be adjusted.

[0075] In addition, it is preferable that the cable 10 including the pair of conductors to be adjusted 11 has a ground conductor 15 that is arranged on the widthwise outer side of the pair of conductors to be adjusted 11 and is connected to ground.

[0076] This makes it possible to block the influence of external noise such as electromagnetic waves from other conductors on the paired conductor 11 to be adjusted, and also to adjust the characteristic impedance of the paired conductor 11 to be adjusted by adjusting the distance between the conductor 11 to be adjusted.

[0077] Seventh embodiment 10(a) to 10(c) are cross-sectional views of a wiring structure according to a seventh embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals.

[0078] The wiring structure 1 of this embodiment has a conductor to be adjusted 16 as a signal line and a ground line 17, and constitutes a so-called single-ended transmission line that transmits an electrical signal generated by changing the potential difference with respect to the ground line 17 in the conductor to be adjusted 16.

[0079] The wiring structure 1 shown in Figure 10(a) comprises a cable 10 containing a conductor to be adjusted, which consists of a conductor to be adjusted 16, a ground wire 17 and an insulator 12, a cable 20 for a first conductor not to be adjusted, which is laminated on one side of the cable 10 containing a conductor to be adjusted and which consists of a conductor not to be adjusted 21 and an insulator 22, and a cable 30 for a second conductor not to be adjusted, which is laminated on the other side of the cable 10 containing a conductor to be adjusted and which consists of a conductor not to be adjusted 31 and an insulator 32.

[0080] In addition, the wiring structure 1 shown in Figure 10 (b) comprises a cable 10 containing a conductor to be adjusted, which consists of a conductor to be adjusted 16 and an insulator 12, a cable 20 for a first conductor not to be adjusted, which is laminated on one side of the cable 10 containing a conductor to be adjusted and which consists of a ground wire 17, a conductor not to be adjusted 21 and an insulator 22, and a cable 30 for a second conductor not to be adjusted, which is laminated on the other side of the cable 10 containing a conductor to be adjusted and which consists of a conductor not to be adjusted 31 and an insulator 32.

[0081] Furthermore, the wiring structure 1 shown in Figure 10 (c) comprises a cable 10 containing a conductor to be adjusted, which consists of a conductor to be adjusted 16, a ground layer 17a connected to the ground line, and an insulator 12, a cable 20 for a first conductor not to be adjusted, which is laminated on one side of the cable 10 containing a conductor to be adjusted and which consists of a conductor not to be adjusted 21 and an insulator 22, and a cable 30 for a second conductor not to be adjusted, which is laminated on the other side of the cable 10 containing a conductor to be adjusted and which consists of a conductor not to be adjusted 31 and an insulator 32.

[0082] The non-adjustment target conductors 21 and 31 are disposed at positions corresponding to both widthwise outer sides of the adjustment target conductor 16 in the width direction of the first and second non-adjustment target conductor cables 20 and 30, respectively.

[0083] Thus, according to the wiring structure of this embodiment, as in the first embodiment, the conductor to be adjusted 16 is less susceptible to the electrical influence of the conductors not to be adjusted 21, 31 of the adjacently stacked first and second cables for conductors not to be adjusted 20, 30, and it is possible to suppress changes in the electrical characteristics of the conductor to be adjusted 16. Therefore, there is no need to configure a shielding structure for the cable 10 containing a conductor to be adjusted or the first and second cables for conductors not to be adjusted 20, 30, and it is possible to maintain the flexibility of the cable 10 containing a conductor to be adjusted and the first and second cables for conductors not to be adjusted 20, 30.

[0084] Eighth embodiment 11 is a cross-sectional view of a conductor showing an eighth embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals.

[0085] The adjustment target conductor 11 and the non-adjustment target conductor 21 of the wiring structure 1 of this embodiment may have a rectangular cross-sectional shape as shown in Fig. 11(a), may have a circular cross-sectional shape as shown in Fig. 11(b), or may be a twisted wire made by twisting together thin conductors as shown in Fig. 11(c). The adjustment target conductor 11 and the non-adjustment target conductor 21 may have mutually different cross-sectional shapes.

[0086] Thus, according to the wiring structure of this embodiment, as in the first embodiment, the conductor to be adjusted 11 is less susceptible to the electrical influence of the conductor not to be adjusted 21 of the cable for conductor not to be adjusted 20 stacked adjacently, and it is possible to suppress changes in the electrical characteristics of the conductor to be adjusted 11. Therefore, there is no need to form a shielding structure for the cable 10 containing a conductor to be adjusted or the cable 20 for a conductor not to be adjusted, and it is possible to maintain the flexibility of the cable 10 containing a conductor to be adjusted and the cable 20 for a conductor not to be adjusted.

[0087] <Ninth embodiment> 12 is a cross-sectional view of a conductor showing a ninth embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals.

[0088] The wiring structure 1 of this embodiment has grease 40 as a retaining member between the cable 10 containing a conductor to be adjusted and the cable 20 for a conductor not to be adjusted, which are stacked on top of each other, to maintain the stacked state of the cable 10 containing a conductor to be adjusted and the cable 20 for a conductor not to be adjusted.

[0089] The grease 40 is a lubricant with a thickener added thereto to increase its viscosity, and is applied over the entire surfaces of the conductor-containing cable 10 to be adjusted and the conductor-not-to-be-adjusted cable 20 facing each other.

[0090] When the wiring structure 1 configured as above is used in a steering roll connector, a sliding door harness, or a sliding seat harness, the conductor-containing cable 10 to be adjusted and the conductor-use cable 20 not to be adjusted are repeatedly bent, which may cause the conductor-use cable 20 not to be adjusted to be misaligned with respect to the conductor-containing cable 10. However, since the grease 40 is interposed between the conductor-containing cable 10 to be adjusted and the conductor-use cable 20 not to be adjusted, the opposing surfaces of the conductor-containing cable 10 to be adjusted and the conductor-use cable 20 not to be adjusted are stuck to each other, and the laminated state of the conductor-containing cable 10 to be adjusted and the conductor-use cable 20 not to be adjusted is maintained.

[0091] Thus, according to the wiring structure of this embodiment, as in the first embodiment, the conductor to be adjusted 11 is less susceptible to the electrical influence of the conductor not to be adjusted 21 of the cable for conductor not to be adjusted 20 stacked adjacently, and it is possible to suppress changes in the electrical characteristics of the conductor to be adjusted 11. Therefore, there is no need to form a shielding structure for the cable 10 containing a conductor to be adjusted or the cable 20 for a conductor not to be adjusted, and it is possible to maintain the flexibility of the cable 10 containing a conductor to be adjusted and the cable 20 for a conductor not to be adjusted.

[0092] It is also preferable to provide grease 40 for maintaining the laminated state of the conductor-containing cable 10 to be adjusted and the conductor-not-to-be-adjusted cable 20 .

[0093] As a result, even when the conductor-containing cable 10 to be adjusted and the conductor-not-to-be-adjusted cable 20 are repeatedly bent, the grease 40 maintains the laminated state of the conductor-containing cable 10 to be adjusted and the conductor-not-to-be-adjusted cable 20, thereby maintaining the positional relationship between the conductor 11 to be adjusted and the conductor 21 not to be adjusted, and suppressing fluctuations in the characteristic impedance.

[0094] In the ninth embodiment, the grease 40 is provided as a retaining member for retaining the stacked state of the conductor-containing cable 10 to be adjusted and the conductor-use cable 20 not to be adjusted, but the present invention is not limited to this. As long as the stacked state of the conductor-containing cable 10 to be adjusted and the conductor-use cable 20 not to be adjusted can be retained, for example, the conductor-containing cable 10 to be adjusted and the conductor-use cable 20 not to be adjusted may be integrally covered by a cover as a retaining member.

[0095] In the first to ninth embodiments, a steering roll connector, a sliding door harness, or a sliding seat harness in a vehicle is shown as an example of application of the wiring structure 1, but the application is not limited thereto. The wiring structure of the present invention is not limited to vehicles, and can be applied to devices that require high-speed communication between one device and another device.

[0096] Tenth embodiment Fig. 13 and Fig. 14 show a tenth embodiment of the present invention. Fig. 13 is an overall perspective view of a power supply device, and Fig. 14 is a perspective view for explaining the internal structure of the power supply device. Note that the same components as those in the first embodiment are denoted by the same reference numerals.

[0097] The power supply device 100 of this embodiment is used as a so-called steering roll connector provided at a connection between a steering column on the vehicle body side, which is one of a pair of objects that move relatively, and a steering shaft on the steering wheel side, which is the other object. The power supply device 100 transmits power or an electric signal between the vehicle body side and the steering wheel side by electrically connecting a main ECU provided on the vehicle body side and a steering ECU provided on the steering wheel side for controlling electrical components arranged on the steering wheel side.

[0098] As shown in Figures 13 and 14, the power supply device 100 includes a fixed side housing 110 as one side member fixed to a steering column, a rotating side housing 120 as the other side member fixed to a steering shaft and arranged to be freely rotatable relative to the fixed side housing 110, and the aforementioned wiring structure 1 accommodated in an annular accommodation space S formed between the fixed side housing 110 and the rotating side housing 120.

[0099] The fixed-side housing 110 has a fixed-side ring portion 111 provided with an opening through which the steering shaft can be inserted, and a cylindrical outer peripheral cylindrical portion 112 extending vertically from the outer periphery of the fixed-side ring portion 111. On the outer periphery of the outer peripheral cylindrical portion 112, a first fixed-side connector 113 to which one ends of some of the cables constituting the wiring structure 1 are connected, and a second fixed-side connector 114 to which one ends of the other cables are connected are provided.

[0100] The rotating side housing 120 has a rotating side ring portion 121 arranged opposite the fixed side ring portion 111 and provided with an opening through which the steering shaft can be inserted, and an inner peripheral cylindrical portion 122 arranged opposite the outer peripheral cylindrical portion 112 and extending vertically from the inner peripheral side of the rotating side ring portion 121. On the outer surface of the rotating side ring portion 121, a first rotating side connector 123 is provided to which the other ends of some of the cables constituting the wiring structure 1, one ends of which are connected to the first fixed side connector 113, are connected, and a second rotating side connector 124 is provided to which the other ends of the other cables, one ends of which are connected to the second fixed side connector 114, are connected.

[0101] The accommodation space S is defined by the fixed side ring portion 111 and the outer peripheral cylindrical portion 112 of the fixed side housing 110 and the rotation side ring portion 121 and the inner peripheral cylindrical portion 122 of the rotation side housing 120, and is formed in an annular shape.

[0102] The multiple cables constituting the wiring structure 1 are each formed as separate bodies, and are housed in the housing space S in a separably stacked state. The multiple cables constituting the wiring structure 1 have one end fixed to the outer peripheral cylindrical portion 112, wound along the inner circumferential surface of the outer peripheral cylindrical portion 112 in one direction of the rotation direction of the rotating-side housing 120, and have their middle portions inverted to form a U-shape between the outer peripheral cylindrical portion 112 and the inner peripheral cylindrical portion 122 and wound in the other direction of the rotation direction, and their other end fixed to the inner peripheral cylindrical portion 122.

[0103] In the power supply device 100 configured as above, when the steering shaft rotates relative to the steering column, the rotation-side housing 120 rotates together with the steering shaft relative to the fixed-side housing 110. At this time, the number of layers of the multiple cables constituting the wiring structure 1 on the inner circumferential surface of the outer circumferential cylindrical portion 112 and the number of layers on the outer circumferential surface of the inner circumferential cylindrical portion 122 change in accordance with the rotation of the rotation-side housing 120 relative to the fixed-side housing 110, and the position of the U-shaped portion in the accommodation space S changes. As a result, the power supply device 100 enables the transmission of power or an electric signal between the vehicle body side and the steering wheel side even in a state in which the steering shaft rotates relative to the steering column.

[0104] Thus, according to the power supply device 100 of this embodiment, the power supply device 100 transmits power or an electrical signal between the vehicle body side and the steering wheel side which move relatively, and includes a wiring structure 1, a fixed side housing 110 provided on the vehicle body side, and a rotating side housing 120 provided on the steering wheel side, and one end of the wiring structure 1 is connected to the fixed side housing 110, and the other end of the wiring structure 1 is connected to the rotating side housing 120.

[0105] This suppresses changes in the electrical characteristics of the conductor 11 to be adjusted, and by providing a wiring structure 1 that can maintain the flexibility of the cable 10 containing the conductor to be adjusted and the cable 20 for the conductor not to be adjusted, it is possible to improve the communication performance in communication between the vehicle body side and the steering wheel side, which move relatively, and to smoothly rotate the rotating side housing 120 relative to the fixed side housing 110.

[0106] In the tenth embodiment, the power supply device 100 transmits electric power or an electric signal between a steering column on the vehicle body side and a steering shaft on the steering wheel side. The power supply device can be applied to any power supply device that transmits electric power or an electric signal between a pair of objects that move relatively, for example, between a vehicle body and a seat that moves relative to the vehicle body, or between the vehicle body and a sliding door that moves relative to the vehicle body. [Explanation of symbols]

[0107] 1 Wiring structure 10 Cable containing conductor to be adjusted 11, 11a, 11b, 11c, 16 Conductor to be adjusted 13 Conductors not subject to adjustment 14 Conductive layer 15 Ground conductor 20 Cable for conductor not subject to adjustment (first cable for conductor not subject to adjustment) 21 Conductor not subject to adjustment 30 Cable for conductor not subject to second adjustment 31 Conductor not subject to adjustment 40 Grease 100 Power supply device 110 Fixed side housing 120 Rotating side housing

Claims

1. A wiring structure including a plurality of flat cables, each of which has a conductor disposed thereon and which are stacked on top of one another, a cable including a conductor to be adjusted, the conductor being a conductor to be adjusted in electrical characteristics; an adjacent laminated cable laminated adjacent to the conductor-containing cable to be adjusted, The conductor included in the adjacent laminated cable is disposed at a position in the width direction of the adjacent laminated cable that corresponds to a widthwise outer side of both widthwise ends of the conductor to be adjusted. Wiring structure.

2. In the cable including the conductor to be adjusted, the conductors to be adjusted forming a pair constituting a differential transmission line are arranged at an interval from each other, The conductors included in the adjacent laminated cable are disposed at positions corresponding to at least either of the outer sides of the pair of the adjustment target conductors in the width direction of the adjacent laminated cable and the positions between the pair of the adjustment target conductors in the width direction of the adjacent laminated cable. The wiring structure according to claim 1 .

3. A conductive layer is formed on one surface of the conductor-containing cable to be adjusted. The wiring structure according to claim 1 .

4. The conductor included in the adjacent laminated cable is the adjustment target conductor. The wiring structure according to claim 1 .

5. The cable including the conductor to be adjusted includes a ground conductor that is disposed on the outer side in the width direction of the pair of the conductor to be adjusted and is connected to ground. The wiring structure according to claim 2 .

6. a holding member for holding the laminated state of the conductor-containing cable to be adjusted and the adjacent laminated cable; The wiring structure according to claim 1 .

7. A power supply device for transmitting electric power or an electric signal between a pair of objects that move relative to each other, comprising: The wiring structure according to claim 1 , A one-side member provided on one of the objects; and a second-side member provided on the other object, one end of the wiring structure is connected to the one-side member, The other end of the wiring structure is connected to the other member. Power supply device.

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