JP2016141375A - Earth connection cabling body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earth connection cabling body which can suppress a voltage drop caused by influence of other on-vehicle apparatus connecting positions of their earth lines, can easily design an earth circuit for connecting the on-vehicle apparatuses, and can flexibly cope with an increase/decrease of the number of the on-vehicle apparatuses to be connected.SOLUTION: In an earth connection cabling body 2 which is cabled on a vehicle body, and to which earth lines 31G to 36G of a plurality of on-vehicle apparatuses 31 to 36 are connected, the earth connect cabling body uses a flat circuit body 20 which is formed of a thin-plate shaped conductor layer 21 and an insulative coating layer covering both faces of the conductive layer 21 into a flat shape, and a plurality of contact parts 21p1 to 21p6 arranged at the conductor layer 21 for the connection of the earth lines 31G to 36G are dispersedly arranged at the conductor layer 21 so that a separation distance between the contact parts reaches an influence avoidance inter-distance dimension or longer which minimizes a drop of a voltage caused by influences of the on-vehicle apparatuses.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a ground connection wiring body that is wired on a vehicle body and to which a ground wire of an in-vehicle device is connected.

  Conventionally, in a vehicle in which the vehicle body is formed of a material that is difficult to conduct electricity, such as carbon fiber reinforced plastic (CFRP), as shown in FIG. It is known that the connection wiring body 110 is wired and the ground wires 121a and 122a from the plurality of in-vehicle devices 121 and 122 are connected to the ground connection wiring body 110.

  In FIG. 13, a vehicle body 100 is for a sedan type passenger car, and includes an engine room 101, a vehicle compartment 102, and a trunk room 103.

  The ground connection wiring body 110 is a thick round wiring body. The first wiring body 111 is wired on the right edge of the vehicle body 100, and the vehicle body branches off from the first wiring body 111. And a second routing body 112 that is routed on the left side edge of 100.

  The first wiring body 111 includes an engine room wiring portion 111a that can connect a ground wire from an in-vehicle device in the engine room 101, and a vehicle compartment wiring that can connect a ground wire from the in-vehicle device in the vehicle compartment 102. It includes a rope portion 111b and a trunk room routing portion 111c to which a ground wire from an in-vehicle device in the trunk room 103 can be connected.

  The second routing body 112 branches from the compartment routing portion 111b of the first routing body 111 and is routed to the left edge of the compartment 102 so as to connect the ground wire from the in-vehicle device in the compartment 102. Is connected to the vehicle compartment wiring portion 112b, and a trunk room wiring portion 112c to which the ground wire from the in-vehicle device in the trunk room 103 can be connected.

  In FIG. 13, the two in-vehicle devices 121 and 122 in the passenger compartment 102 are both grounded to the passenger compartment routing portion 112b.

  In recent years, as shown in Patent Documents 1 and 2 below, a flat circuit body (flexible wiring board) in which both sides of a thin plate-like conductor layer are sandwiched between insulating covering layers as a wiring body to be wired to a vehicle body. ) And the use of a flat circuit body for the ground connection wiring body 110 is also being studied.

JP-A-9-134623 JP 2010-278132 A

  However, in the ground wire connection structure shown in FIG. 13, when the distance L1 between the connection positions of the two in-vehicle devices 121 and 122 is long as shown in FIG. There was a risk that the vehicle-mounted device 122 would malfunction due to the descent. In order to prevent such an inconvenience, it is necessary to appropriately set the connection position of the ground wire on the ground connection wiring body 110, and when there are many in-vehicle devices, the connection position of the ground wire. It may be difficult to select

  On the other hand, a flat circuit body is used as the ground connection wiring body 110. However, the conventional flat circuit body is equipped with a plurality of independent conductor layers for each on-vehicle device to be connected. In many cases, each device is connected to a dedicated conductor layer, and when the number of in-vehicle devices to be connected increases, there is a risk that inconveniences such as lack of connectable conductor layers and inability to respond will occur. there were.

  Accordingly, an object of the present invention is to solve the above-mentioned problems, and it is possible to suppress the occurrence of a voltage drop due to the influence of other in-vehicle devices due to the connection position of the ground wire, and to connect the in-vehicle devices. An object of the present invention is to provide a ground connection wiring body that can be easily designed and that can flexibly cope with an increase or decrease in the number of in-vehicle devices to be connected.

The above-described object of the present invention is achieved by the following configuration.
(1) A ground connection wiring body that is wired on a vehicle body and to which ground wires of a plurality of in-vehicle devices are connected,
As a wiring body, using a flat circuit body formed in a planar shape with a thin plate-like conductor layer and an insulating covering layer covering both sides of the conductor layer,
A plurality of contact portions provided on the conductor layer for the connection of the ground wire, the distance between the contact portions on the creeping surface of the conductor layer minimizes the voltage drop due to the influence of the in-vehicle devices. A ground connection wiring body, wherein the conductor connection layer is dispersedly disposed in the conductor layer so as to be equal to or larger than the influence avoidance separation dimension.

  (2) The flat circuit body is formed in a structure in which the flat circuit body is folded or wound in the width direction so that the flat circuit body is laminated in a plurality of layers, and the plurality of contact portions are provided in different layers. The wiring structure for ground connection according to (1), which is characterized in that

  (3) The position of each contact portion is set so that the positions of the contact portions of different layers are gathered at specific positions in the length direction of the flat circuit body. Arrangement for ground connection.

  (4) The flat circuit bodies of some layers are separated from other adjacent layers on both sides of the area where the contact portions are equipped, and the areas where the contact portions are equipped The ground connection wiring structure according to (3), wherein the contact portion is positioned at the specific position in the length direction of the flat circuit body by folding back in the length direction.

  (5) The flat circuit bodies of the overlapping layers are integrated by stacking the conductor layers of the plurality of flat circuit bodies so that the conductor layers are directly overlapped with each other. Thus, the conductor connection portion having a reduced conductor resistance value is formed in a part of the length direction, and the ground connection wiring body according to any one of the above (2) to (4), .

  According to the configuration of the above (1), the plurality of contact portions provided on the conductor layer of the flat circuit body arranged in the vehicle body has an in-vehicle distance between the contact portions along the creepage surface of the conductor layer. The conductor layers are distributed and arranged so as to be larger than the influence avoidance separation dimension that minimizes the voltage drop due to the influence between each other.

  Therefore, it is possible to prevent a voltage drop from occurring due to the influence of other in-vehicle devices due to the proximity of the connection position of the ground wire.

  In addition, the use of a ground connection cable with a sufficiently large area facilitates the selection of the arrangement of a plurality of contact portions that are larger than the influence avoidance separation dimension, and facilitates the design of a ground circuit for connecting on-vehicle equipment. be able to.

  In addition, by disposing the contact portions for connecting the ground wire over a large area of the conductor layer so that the separation distance between the contact portions is equal to or greater than the influence avoidance separation dimension, for example, either vertical or horizontal If the separation distance in one direction is equal to or greater than the influence avoidance separation dimension, a plurality of contact portions can be set on the same conductor layer. In other words, since the number of contact points is not limited to the number of conductor layers provided in the flat circuit body, it is possible to flexibly cope with an increase or decrease in the number of in-vehicle devices to be connected.

  Moreover, according to the structure of said (1), since a conductor layer becomes a film | membrane form with constant thickness, a skin effect can also be suppressed.

  According to the configuration of (2) above, the ground connection wiring body is formed into a structure in which the flat circuit body is laminated in a plurality of layers by folding or winding the flat circuit body in the width direction. For this reason, even if the original width of the flat circuit body is large, the width dimension at the time of wiring can be kept small, and wiring can be performed to the vehicle body in a space saving manner. Here, folding or winding the flat circuit body in the width direction means folding or winding so as to reduce the width of the flat circuit body.

  In addition, since the ground connection routing body can be routed in a small space, even when it is routed on the floor of the vehicle body, for example, it is placed in areas where passengers are difficult to step on, such as the side edges of the floor and the lower part of the seat. By searching, it is possible to prevent the flat circuit body from being damaged by trampling.

  According to the configuration of (2) above, a plurality of contact portions for grounding a plurality of in-vehicle devices are equipped on flat circuit bodies of different layers whose creepage distance between layers is not less than the influence avoidance separation dimension. Is done. Therefore, even if these contact parts are close to each other along the longitudinal direction of the routing body, the creepage distance as a conductive path between these contact parts is ensured to a value greater than a certain value larger than the influence avoidance separation dimension. Is done. Therefore, devices do not affect each other and cause a voltage drop, and there is no possibility that the in-vehicle device may malfunction due to the voltage drop. Therefore, the position of the contact portion in each layer can be set at an arbitrary position in the length direction of the flat circuit body, and the selection of the arrangement of the contact portion can be facilitated.

  According to the configuration of (3) above, since the positions of the contact portions of different layers are gathered at a specific position in the length direction of the flat circuit body, the connection of the ground wire to the contact portion is concentrated at the specific position. It can be carried out efficiently. For this reason, it is possible to easily connect the ground wire.

  According to the configuration of (4) above, even if the arrangement of the contact portion on the actual flat circuit body is deviated from a specific position in the length direction of the flat circuit body, the layer equipped with the contact portion is folded back. Thus, the contact portion can be corrected to a specific position in the length direction where another contact portion is set. Therefore, the arrangement of the contact portions in each layer can be corrected to a specific position later, and the arrangement of the contact portions can be set more flexibly.

  According to the structure of said (5), the conductor union part formed in the middle of the length direction of a wiring body becomes large in the cross-sectional area as an electric circuit compared with the normal conductor layer before and behind that. Conductor resistance value decreases. In other words, an optimum conductor resistance value can be locally set according to the characteristics of the on-vehicle equipment to be grounded, and stable performance as a ground circuit can be exhibited.

  According to the ground connection wiring body according to the present invention, it is possible to suppress a voltage drop due to the influence of other in-vehicle devices due to the connection of the ground wire at an inappropriate position, and to connect the in-vehicle devices. Circuit design can be facilitated, and it is possible to flexibly cope with an increase or decrease in the number of in-vehicle devices to be connected.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a plan view of a ground connection wiring body according to the present invention in a state of being wired in a vehicle body according to a first embodiment. FIG. 2 is a schematic diagram showing a circuit structure in a state in which a plurality of contact portions are arranged on the ground connection wiring body of the first embodiment shown in FIG. FIG. 3 is a plan view showing a schematic configuration of the ground connection wiring body according to the first embodiment of the present invention. FIG. 4 is a plan view of a modification of the shape of the conductor layer in the ground connection wiring body according to the present invention. FIG. 5 is a plan view of still another modified example of the shape of the conductor layer in the ground connection wiring assembly according to the present invention. FIG. 6 is a plan view showing a state in which the ground connection wiring body according to the second embodiment of the present invention is routed on the vehicle body. 7 is a perspective view of the ground connection wiring body shown in FIG. FIG. 8 is a perspective view of a ground connection wiring body according to a third embodiment of the present invention. FIG. 9 is a perspective view of a ground connection wiring body according to a fourth embodiment of the present invention. FIG. 10 is a perspective view of a ground connection wiring body according to a fifth embodiment of the present invention. FIG. 11 is a perspective view of a ground connection wiring body according to a sixth embodiment of the present invention. FIG. 12 is a perspective view of a ground connection wiring body according to a seventh embodiment of the present invention. FIG. 13 is a plan view showing a state in which a conventional ground connection wiring body is routed to a vehicle body. FIG. 14 is an explanatory diagram of a situation in which a voltage effect is generated in one in-vehicle device in the ground connection state shown in FIG.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a ground connection wiring body according to the invention will be described in detail with reference to the drawings.

[First Embodiment]
1 to 3 show a first embodiment of a ground connection wiring body according to the present invention, and FIG. 1 is routed to the vehicle body of the ground connection wiring body according to the first embodiment of the present invention. FIG. 2 is a schematic view showing a circuit structure in which a plurality of contact portions are arranged on the ground connection wiring body of the first embodiment shown in FIG. 1, and FIG. 3 is a first view of the present invention. It is a top view which shows schematic structure of the wiring body for earth connection of embodiment.

  The ground connection wiring body 2 according to the first embodiment is a wiring body that is wired on the vehicle body 100 and to which the ground wires 31G to 36G of the plurality of in-vehicle devices 31 to 36 are connected.

  The vehicle body 100 is the same as the vehicle body 100 shown in FIG. 13, and the same reference numerals as those of the vehicle body 100 in FIG.

  As shown in FIG. 3, the ground connection wiring body 2 according to the first embodiment includes a thin plate-like conductor layer 21 and insulating covering layers 22 and 23 covering both surfaces of the conductor layer 21. A flat circuit body 20 formed in a planar shape and contact portions 21p1 to 21p6 provided at a plurality of locations (six locations in FIG. 2) on the conductor layer 21 of the flat circuit body 20 are configured. Yes. The contact portions 21p1 to 21p6 are contact points for connecting the ground wires 31G to 36G, and the exposed conductor layer 22 or the covering layer 23 covering the front surface or the back surface of the ground connection wiring body 2 is removed to expose the conductor layer. Equipped on 21.

  In the case of the present embodiment, as shown in FIG. 3, the conductor layer 21 is composed of a plurality of horizontal conductors 211 and a plurality of vertical conductors 212 orthogonal to these horizontal conductors 211. Mesh structure).

  The plurality of lateral conductors 211 are strip-like conductors extending in the width direction of the wiring body, and are provided at predetermined intervals in the longitudinal direction of the wiring body (the direction of the arrow Y1 in FIG. 3).

  The plurality of vertical conductors 212 are band-like conductors extending along the longitudinal direction of the wiring body, and are provided at predetermined intervals in the width direction of the wiring body (the direction of the arrow X1 in FIG. 3). .

  In the case of the present embodiment, the contact portions 21p1 to 21p6 are arranged on the conductor layer 21 so that the separation distance between adjacent contact portions is equal to or greater than the influence avoidance separation dimension. This influence avoidance separation dimension is a minimum value of the separation dimension that can minimize the voltage drop due to the influence between the adjacent in-vehicle devices 3.

  In the ground connection wiring body 2 according to the first embodiment described above, the plurality of contact portions 21p1 to 21p6 provided on the conductor layer 21 of the flat circuit body 20 wired in the vehicle body are adjacent contact portions 21p1. The conductor layers 21 are distributed and arranged in such a manner that the separation distance on the creeping surface of the conductor layers 21 between 21 p6 is equal to or greater than the influence avoidance separation dimension.

  Therefore, it is possible to prevent a voltage drop from occurring due to the influence of the other in-vehicle devices 31 to 36 due to the proximity of the connection positions of the ground wires 31G to 36G.

  Further, by using a ground connection wiring body having a sufficiently large area, it becomes easy to select the arrangement of the plurality of contact portions 21p1 to 21p6 that are larger than the influence avoidance separation dimension, and the ground for connecting the in-vehicle devices 31 to 36 is possible. Circuit design can be facilitated.

  Further, the contact portions 21p1 to 21p6 that connect the ground wires 31G to 36G are dispersedly arranged on the large area of the conductor layer 21 so that the separation distance between the adjacent contact portions is equal to or larger than the influence avoidance separation dimension. Thus, for example, if the separation distance in any one of the vertical and horizontal directions is equal to or greater than the influence avoidance separation dimension, a plurality of contact portions 21p1 to 21p6 can be set on the same conductor layer 21. In other words, since the number of contact portions 21p1 to 21p6 is not limited to the number of poles of the conductor layer 21 provided in the flat circuit body 20, it is possible to flexibly cope with the increase / decrease in the in-vehicle devices 31 to 36 connected. it can.

[Modification of conductor layer]
4 and 5 show a modification of the conductor layer 21 in the flat circuit body 20 used in the present invention.

  The conductor layer 21 in the flat circuit body 20 shown in FIG. 4 has a single planar shape. Further, the conductor layer 21 in the flat circuit body 20 shown in FIG. 5 includes a plurality of conductor layers 213 to 216 having special shapes that are independent of each other.

  The flat circuit body 20 shown in any of FIGS. 4 and 5 can be used as the flat circuit body of the present invention.

[Second Embodiment]
6 and 7 show a ground connection wire according to the second embodiment of the present invention. FIG. 6 is a plan view of the ground connection wiring body according to the second embodiment of the present invention in a state of being routed on the vehicle body. 7 and 7 are perspective views of the ground connection wiring body shown in FIG.

  In the ground connection wiring body 2A according to the second embodiment, the flat circuit body 20 shown in any one of FIGS. 3 to 5 is zigzag multiple times in the width direction as shown in FIG. By folding, the flat circuit body 20 is formed into a narrow structure in which a plurality of layers are laminated and wired on the floor of the vehicle body 100. Although not shown, the plurality of contact portions 21p1 to 21p6 are provided in different layers where the creepage distance between the layers is equal to or greater than the influence avoidance separation dimension.

  The ground connection wiring body 2A of the second embodiment is formed into a structure in which the flat circuit body 20 is laminated in a plurality of layers by folding the flat circuit body 20 in the width direction. Therefore, even if the original width of the flat circuit body 20 is large, the width dimension W3 (see FIGS. 6 and 7) at the time of wiring can be kept small, and wiring can be performed to the vehicle body in a space-saving manner.

  In addition, since the ground connection routing body can be routed in a small space, even when it is routed on the floor of the vehicle body, for example, it is placed in areas where passengers are difficult to step on, such as the side edges of the floor and the lower part of the seat. By searching, it is possible to prevent the flat circuit body 20 from being damaged due to trampling.

  Further, in the ground connection wiring body 2A of the second embodiment, a plurality of contact portions for ground connection of the plurality of in-vehicle devices 31 to 36 are different from each other such that the creepage distance between the layers is not less than the influence avoidance separation dimension. Mounted on the flat circuit body 20 of the layer.

  Therefore, even if these contact parts are close to each other along the longitudinal direction of the routing body, the creepage distance as a conductive path between these contact parts is ensured to a value greater than a certain value larger than the influence avoidance separation dimension. Is done. Therefore, devices do not affect each other and cause a voltage drop, and there is no possibility that the in-vehicle devices 31 to 36 may malfunction due to the voltage drop. Therefore, the position of the contact part in each layer can be set at an arbitrary position in the length direction of the flat circuit body 20, and the selection of the arrangement of the contact part can be facilitated.

[Third Embodiment]
FIG. 8 is a perspective view of the ground connection wiring body according to the third embodiment of the present invention.
Like the ground connection wiring body 2A shown in the second embodiment, the ground connection wiring body 2B of the third embodiment is obtained by folding a plurality of flat circuit bodies 20 in a zigzag shape in the width direction. The flat circuit body 20 is formed into a narrow structure laminated in a plurality of layers.

  Furthermore, in the present embodiment, the positions of the contact portions 21p7 and 21p8 are set so that the positions of the contact portions 21p7 and 21p8 of different layers are gathered at specific positions in the length direction of the flat circuit body 20.

  In the case of this embodiment, the specific position in the length direction where each contact portion is equipped is a position separated from the one end portion in the length direction of the flat circuit body 20 by a distance L1.

  In the ground connection wiring body 2B according to the third embodiment, the positions of the contact portions 21p7 and 21p8 of different layers are gathered at specific positions in the length direction of the flat circuit body 20, and thus the contact portions 21p7 and 21p8 are connected to the contact portions 21p7 and 21p8. The connection of the ground wires 37G and 38G can be concentrated and performed efficiently at the specific position. Therefore, the connection work of the ground wires 31G to 36G can be facilitated.

[Fourth Embodiment]
FIG. 9 is a perspective view of a ground connection wiring body according to a fourth embodiment of the present invention.
In the ground connection wiring body 2C of the fourth embodiment, the flat circuit body 20 of a part of the layer is separated from the other layers adjacent to each other on both sides of the region where the contact part 21p9 is equipped, and the contact part 21p9. 9 is folded in the length direction of the flat circuit body 20 to position the contact portion 21p9 at a specific position in the length direction of the flat circuit body 20, as indicated by an arrow R1 in FIG. ing.

  In the ground connection wiring body 2C according to the fourth embodiment, even if the arrangement of the contact portion 21p9 on the actual flat circuit body 20 is shifted from a specific position in the length direction of the flat circuit body 20, the contact portion By folding the layer equipped with 21p9, the contact portion 21p9 can be corrected to a specific position in the length direction where the contact portion 21p7 of the other layer is set. Therefore, the arrangement of the contact portions in each layer can be corrected to a specific position later, and the arrangement of the contact portions can be set more flexibly.

[Fifth Embodiment]
FIG. 10 is a perspective view of a ground connection wiring body according to a fifth embodiment of the present invention.
In the ground connection wiring body 2D of the fifth embodiment, the flat circuit bodies 20 of the overlapping layers are partially removed from the covering layers 22 and 23 so that the conductor layers 21 directly overlap each other. is there. The conductor layers 21 of the plurality of flat circuit bodies 20 are laminated and integrated, so that the conductor combined portions 20K1 and 20K2 having reduced conductor resistance values are formed in a part of the length direction.

  One conductor combined portion 20K1 shown in FIG. 10 has a structure in which six stacked conductor layers 21 are integrated. The other conductor combined portion 20K2 has a structure in which the laminated four conductor layers 21 are integrated.

  In the ground connection wiring body 2D according to the fifth embodiment, the conductor merged portions 20K1 and 20K2 formed in the middle of the length direction of the wiring body are compared with the normal conductor layers 21 before and after the wiring body. The cross-sectional area as the electric circuit increases and the conductor resistance value decreases. In other words, an optimum conductor resistance value can be locally set according to the characteristics of the on-vehicle equipment to be grounded, and stable performance as a ground circuit can be exhibited.

[Sixth Embodiment]
FIG. 11 is a perspective view of a ground connection wiring body according to a sixth embodiment of the present invention.
The ground connection wiring body 2E of the sixth embodiment is finished into a narrow wiring body by winding the flat circuit body 20E in the width direction and forming it into a roll shape.

  By winding in the width direction, a structure in which the flat circuit body 20 is laminated in a plurality of layers is formed, and the contact portions 21p1, 21P2 that connect the ground wires 31G-33G of the in-vehicle devices 31-33 to different layers. , 21P3.

  That is, in the ground connection wiring body of the present invention, the structure in which the flat circuit body 20 is laminated in a plurality of layers can be obtained not only by folding but also by winding.

[Seventh Embodiment]
FIG. 12 is a perspective view of the ground connection wiring body 2F according to the seventh embodiment of the present invention.
The ground connection wiring body 2F according to the seventh embodiment is formed in a structure in which the flat circuit body 20 is folded in a double-folded manner and the flat circuit body 20 is laminated in a plurality of layers. Reference numerals G1 and G2 in the figure are mountain folding points.

  That is, in the ground connection wiring body of the present invention, when the flat circuit body 20 is folded in the width direction, it can be folded not only in a zigzag shape but also in a folding manner as shown in FIG.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  Here, the features of the above-described embodiments of the ground connection wiring assembly according to the present invention are summarized and listed in the following [1] to [5], respectively.

[1] A ground connection wiring body (2) that is wired on a vehicle body and to which ground wires (31G to 36G) of a plurality of in-vehicle devices (31 to 36) are connected,
As a wiring body, a flat circuit body (20) formed in a planar shape by a thin plate-like conductor layer (21) and insulating coating layers (22, 23) covering both surfaces of the conductor layer (21). Use
A plurality of contact portions (21p1 to 21p6) provided on the conductor layer (21) for connecting the ground wires (31G to 36G) are connected to the conductor layer (21p1 to 21p6) between the contact portions (21p1 to 21p6). 21) The ground is characterized in that it is dispersedly arranged in the conductor layer (21) so that the creeping distance on the creeping surface is equal to or larger than the influence avoidance spacing dimension that minimizes the voltage drop due to the influence of the in-vehicle devices. Connecting cable (2).

  [2] The flat circuit body (20) is formed into a structure in which the flat circuit body (20) is laminated in a plurality of layers by being folded or wound in the width direction, and a plurality of the contact portions (21p1 to 21p6). ) Are installed in different layers, the wiring structure for ground connection (2A) according to the above [1].

  [3] The positions of the contact portions (21p7, 21p8) are set so that the positions of the contact portions (21p7, 21p8) in different layers are gathered at specific positions in the length direction of the flat circuit body (20). The ground connection wiring body (2B) according to the above-mentioned [2], wherein the wiring body is for ground connection.

  [4] The flat circuit body (20) of a part of the layer is separated from other layers adjacent to each other in the region where the contact part (21p9) is provided, and the contact part (21p9) is provided. The contact portion (21p9) is positioned at the specific position in the length direction of the flat circuit body (20) by folding back the region in the length direction of the flat circuit body (20). The ground connection cable (2C) according to [3] above.

  [5] The flat circuit bodies (20) of the overlapping layers are formed by removing the covering layers (22, 23) so that the conductor layers directly overlap each other, and a plurality of the flat circuit bodies (20). The conductor layers (20K) having a reduced conductor resistance value are formed in a part of the length direction by laminating and integrating the conductor layers of [2] to [2] above, 4] The ground connection wiring body according to any one of (2).

2, 2A, 2C, 2D. 2E, 2F Ground connection wiring body 20 Flat circuit body 21 Conductor layer 22, 23 Cover layer 20K1, 20K2 Conductor combination part 21p1-21p6, 21p7, 21p8, 21p9 Contact part 31-36 In-vehicle device 31G-36G Ground wire

Claims (5)

A ground connection wiring body that is wired on a vehicle body and connected to ground wires of a plurality of in-vehicle devices,
As a wiring body, using a flat circuit body formed in a planar shape with a thin plate-like conductor layer and an insulating covering layer covering both sides of the conductor layer,
A plurality of contact portions provided on the conductor layer for the connection of the ground wire, the distance between the contact portions on the creeping surface of the conductor layer minimizes the voltage drop due to the influence of the in-vehicle devices. A ground connection wiring body, wherein the conductor connection layer is dispersedly disposed in the conductor layer so as to be equal to or larger than the influence avoidance separation dimension.   The flat circuit body is formed in a structure in which the flat circuit body is stacked in a plurality of layers by folding or winding in the width direction, and the plurality of contact portions are provided in different layers. The ground connection wiring body according to claim 1.   3. The ground connection wiring according to claim 2, wherein the positions of the contact portions are set so that the positions of the contact portions of different layers are gathered at specific positions in the length direction of the flat circuit body. Corpse.   The flat circuit body of some layers is separated from other layers adjacent to each other on both sides of the region where the contact portion is equipped, and the region where the contact portion is equipped is the length direction of the flat circuit body The ground connection wiring body according to claim 3, wherein the contact portion is positioned at the specific position in the length direction of the flat circuit body by folding back.   The flat circuit bodies of overlapping layers are formed by removing the covering layer so that the conductor layers directly overlap each other, and the conductor layers of the plurality of flat circuit bodies are laminated and integrated. 5. The conductor for ground connection according to any one of claims 2 to 4, wherein a conductor merged portion having a reduced conductor resistance value is formed in a part of the length direction.

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