Floor harness

Abstract

To provide a floor harness which enables improvement of workability of assembly work.SOLUTION: A floor harness 1 includes a first sub harness 10, a second sub harness 20, a third sub harness 30, and electronic components 40. The third sub harness 30 includes: a flat type arrangement material 31 which has flexibility and is arranged spanning the first sub harness 10 and the second sub harness 20; a third connector 32 provided at one end of the flat type arrangement material 31 and connected to a first connector 12; and a fourth connector 33 provided at the other end of the flat type arrangement material 31 and connected to a second connector 22. The electronic components 40 are mounted on the flat type arrangement material 31 of the third sub harness 30 to form an ECU 2 of a vehicle 100.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a floor harness. [Background technology]

[0002] As an example of a conventional floor harness technology, Patent Document 1 discloses a floor harness having a first sub-harness provided at one end of the vehicle floor in the vehicle width direction and extending along the vehicle fore-and-aft direction, a second sub-harness provided at the other end of the floor in the vehicle width direction and extending along the vehicle fore-and-aft direction, and a third sub-harness routed between the first sub-harness and the second sub-harness. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-111117 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in the floor harness described in Patent Document 1 mentioned above, for example, the ECU may be electrically connected to a device installed on the floor via a first sub-harness, a second sub-harness, a third sub-harness, etc. In this case, however, since the installation position of the ECU differs depending on the vehicle in which it is installed, there is a risk that the workability of the assembly work may be deteriorated.

[0005] The present invention has been made in view of the above circumstances, and has an object to provide a floor harness that can improve the workability of assembly work. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the floor harness of the present invention comprises a first sub-harness provided at one end of the vehicle floor in the vehicle width direction and having a first wiring material extending along the vehicle fore-and-aft direction and a first connector provided on the first wiring material; a second sub-harness provided at the other end of the floor in the vehicle width direction and having a second wiring material extending along the vehicle fore-and-aft direction and a second connector provided on the second wiring material; a third sub-harness having a flexible flat wiring material that is routed between the first sub-harness and the second sub-harness, a third connector that is provided at one end of the flat wiring material and connected to the first connector, and a fourth connector that is provided at the other end of the flat wiring material and connected to the second connector; and electronic components mounted on the flat wiring material of the third sub-harness and that constitute the ECU of the vehicle. [Effects of the Invention]

[0007] In the floor harness according to the present invention, the flat wiring material of the third sub-harness is mounted with electronic components that constitute the vehicle's ECU. With this configuration, the floor harness can integrate the flat wiring material and the ECU, thereby reducing the wiring material (harness) that connects the flat wiring material and the ECU. As a result, the floor harness has the effect of improving the workability of the assembly work. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is an exemplary perspective view of a vehicle to which a floor harness according to an embodiment is applied. [Figure 2] FIG. 2 is an exemplary perspective view of a floor to which the floor harness according to the embodiment is applied. [Figure 3] FIG. 3 is an exemplary perspective view of a floor harness according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the following embodiments. Furthermore, the components in the following embodiments include those that are easily replaceable by those skilled in the art, or those that are substantially identical. Note that in this specification, ordinal numbers are used only to distinguish between parts, members, portions, positions, directions, etc., and do not indicate order or priority.

[0010] [Embodiment] FIG. 1 is a perspective view of a vehicle 100 to which a floor harness 1 according to an embodiment is applied, and FIG. 2 is a perspective view of a floor 110 to which the floor harness 1 is applied. The floor harness 1 of this embodiment shown in FIGS. 1 and 2 is applied to a vehicle 100 such as an automobile, and is used to connect devices mounted on the vehicle 100 for power supply and signal communication. The floor harness 1 of this embodiment is provided on the floor 110 of the vehicle 100, and is routed, for example, between a side member 121 on one end side of a body 120 in the vehicle width direction Y and a side member 122 on the other end side of the vehicle width direction Y. The floor 110 is a floor material provided under the driver's seat, passenger seat, rear seat, etc. of the vehicle 100, and constitutes a structural member (framework member) of the vehicle 100 together with the body 120.

[0011] In the following description, of the first, second, and third directions that intersect with one another, the first direction will be referred to as the "vehicle longitudinal direction X," the second direction will be referred to as the "vehicle width direction Y," and the third direction will be referred to as the "vehicle height direction Z." Here, the vehicle longitudinal direction X, the vehicle width direction Y, and the vehicle height direction Z are approximately perpendicular to one another. The vehicle longitudinal direction X typically corresponds to the overall length direction of the vehicle 100, the longitudinal direction of the first sub-harness 10 and the second sub-harness 20 of the floor harness 1, etc. The vehicle width direction Y typically corresponds to the overall width direction of the vehicle 100, the longitudinal direction of the third sub-harness 30 of the floor harness 1, etc. The vehicle height direction Z typically corresponds to the vehicle height direction of the vehicle 100, the plate thickness direction (height direction) of the floor harness 1, etc. Unless otherwise specified, the directions used in the following description will be described as directions in a state in which the floor harness 1 is assembled to the vehicle 100.

[0012] FIG. 3 is a perspective view of the floor harness 1. As shown in FIG. 3, the floor harness 1 of this embodiment includes, for example, a first sub-harness 10, a second sub-harness 20, a third sub-harness 30, and a plurality of electronic components 40 constituting the ECU 2. The first sub-harness 10 is a wiring module routed adjacent to the side member 121 at one end side in the vehicle width direction Y. The first sub-harness 10 includes, for example, a first wiring material 11 extending along the vehicle front-rear direction X, and a first connector 12 provided on the first wiring material 11. The first wiring material 11 is, for example, configured by a wire bundle in which a plurality of electric wires are bundled together, a flat wiring material similar to the third sub-harness 30 described later, or the like. The first connector 12 is provided, for example, at approximately the center of the first wiring material 11 in the vehicle fore-and-aft direction X, has a connection port that opens toward the other end side (the third sub-harness 30 side) in the vehicle width direction Y, and is configured to be connectable to the third connector 32 of the third sub-harness 30.

[0013] The second sub-harness 20 is a wiring module routed adjacent to the side member 122 on the other end side in the vehicle width direction Y. The second sub-harness 20 has, for example, a second wiring material 21 extending along the vehicle longitudinal direction X, and a second connector 22 provided on the second wiring material 21. The second wiring material 21 is formed, for example, from an electric wire bundle in which a plurality of electric wires are bundled together, or a flat wiring material similar to the third sub-harness 30 described below. The second connector 22 is provided, for example, in approximately the center of the second wiring material 21 in the vehicle longitudinal direction X, has a connection port that opens toward one end side in the vehicle width direction Y (the third sub-harness 30 side), and is configured to be connectable to a fourth connector 33 of the third sub-harness 30.

[0014] The third sub-harness 30 is a wiring module that is routed between the first sub-harness 10 and the second sub-harness 20. The third sub-harness 30 has, for example, a flat wiring material 31 extending along the vehicle width direction Y, a third connector 32 provided at one end of the flat wiring material 31, and a fourth connector 33 provided at the other end of the flat wiring material 31. The flat wiring material 31 is a wiring material that constitutes the floor harness 1, and is formed, for example, from an FPC (Flexible Printed Circuits) or an FFC (Flexible Flat Cable). The flat wiring material 31 is a thin, flexible, flat wiring material. The flat wiring material 31 is formed, for example, from a base film, a wiring pattern, and a cover lay.

[0015] The base film is a substrate that has excellent flexibility and determines the overall shape of the flat wiring material 31. The base film is formed, for example, from a polyimide resin that has excellent heat resistance. The wiring pattern is laminated on the surface (mounting surface) of the base film and constitutes a plurality of conductor circuit portions (pattern layers). The wiring pattern is formed, for example, from a conductive material such as copper foil, and is printed on the surface of the base film as a printed circuit body. The coverlay is laminated over the entire surface of the base film via an adhesive (not shown), and functions as a protective layer that protects the conductor circuit portions of the wiring pattern, etc.

[0016] Moreover, the flat wiring material 31 is formed as a whole in a rectangular shape extending horizontally along the vehicle width direction Y. That is, the flat wiring material 31 has a pair of short side portions (end portions) located on both sides in the vehicle width direction Y and a pair of long side portions (end portions) located on both sides in the vehicle front-rear direction X. In this embodiment, a third connector 32 is provided at one end of the pair of short side portions in the vehicle width direction Y, and a fourth connector 33 is provided at the other end in the vehicle width direction Y. The third connector 32 has a connection port that opens toward the one end side in the vehicle width direction Y, and is connected to the first connector 12 of the first sub-harness 10. The fourth connector 33 has a connection port that opens toward the other end side in the vehicle width direction Y, and is connected to the second connector 22 of the second sub-harness 20.

[0017] The third connector 32 and the fourth connector 33 are electrically connected to the wiring pattern of the flat wiring material 31 and to a plurality of electronic components 40 constituting the ECU 2, which will be described later. The plurality of conductor circuit portions formed by the wiring pattern can function as any of circuits such as a signal circuit, a signal GND circuit, or a power earth circuit. The signal circuit is a circuit that transmits communication signals between devices such as the ECU 2 and various electronic devices that may be installed on the floor 110. The signal GND circuit is a circuit that accompanies the signal circuit, provides electrical continuity between the devices, and matches the potential that serves as the reference for circuit operation between the devices. The power earth circuit is a circuit that grounds the power supply system of the devices.

[0018] A plurality of electronic components 40 are mounted on the flat wiring material 31 to constitute the ECU 2 of the vehicle 100. Here, the plurality of electronic components 40 are provided at intervals from one another on the surface of the flat wiring material 31 and are surrounded by a cover member or the like. The plurality of electronic components 40 include, for example, chips such as a CPU (Central Processing Unit), sensors, etc. In this embodiment, the plurality of electronic components 40 are dispersedly arranged over a range between one end and the other end of the flat wiring material 31 in the vehicle width direction Y. This suppresses a local temperature rise in the flat wiring material 31 due to heat generation by the plurality of electronic components 40. In this way, in this embodiment, the ECU 2 and the flat wiring material 31 are integrated by directly mounting the electronic components 40 on the flat wiring material 31.

[0019] Here, in this embodiment, the ECU 2 is configured to include, for example, a first ECU 2A and a second ECU 2B. The first ECU 2A is, for example, a zone ECU that comprehensively controls devices in a peripheral area (zone) of the side member 121 on one end side of the floor 110 in the vehicle width direction Y, and controls devices connected to the first sub-harness 10. The second ECU 2B is, for example, a zone ECU that comprehensively controls devices in a peripheral area (zone) of the side member 122 on the other end side of the floor 110 in the vehicle width direction Y, and controls devices connected to the second sub-harness 20.

[0020] In this embodiment, the electronic components 40 include, for example, a plurality of first electronic components 41 that constitute the first ECU 2A and a plurality of second electronic components 42 that constitute the second ECU 2B. The plurality of first electronic components 41 are, for example, disposed dispersedly in an area on one end side of the flat wiring material 31 in the vehicle width direction Y. The plurality of second electronic components 42 are, for example, disposed dispersedly in an area on the other end side of the flat wiring material 31 in the vehicle width direction Y. The plurality of first electronic components 41 are, for example, disposed dispersedly in an area on the other end side of the flat wiring material 31 in the vehicle width direction Y. The plurality of first electronic components 41 are, for example, configured to include components having the same specifications as the plurality of second electronic components 42.

[0021] As described above, the third sub-harness 30 of this embodiment is configured to include the flat wiring material 31. Therefore, the third sub-harness 30 configured with the flat wiring material 31 is lighter than a third sub-harness in which various general electric wires are bundled together. Therefore, according to this embodiment, it is possible to accommodate an increase in the size of the floor harness 1 while suppressing an increase in the overall weight of the floor harness 1.

[0022] Furthermore, the third sub-harness 30, which is generally made by bundling various types of electric wires, is manufactured manually by a worker. In contrast, the flat wiring material 31 can be manufactured by automation, and therefore, by configuring the third sub-harness 30 with the flat wiring material 31, the number of steps required to manufacture the third sub-harness 30 can be reduced. Furthermore, in this embodiment, the third connector 32 and the fourth connector 33 of the third sub-harness 30 enable the first sub-harness 10 and the second sub-harness 20 to be attached and detached. Therefore, the assembly work of the floor harness 1 can be performed more easily.

[0023] In addition, in this embodiment, the flat wiring material 31 is flexible, so the floor harness 1 can be easily adapted to various mounting portions on the floor 110. In addition, in this embodiment, one or more third connectors 32 and one or more fourth connectors 33 are installed at both ends of the flat wiring material 31 in the vehicle width direction Y, so the flat wiring material 31 can connect the first sub-harness 10 and the second sub-harness 20 from opposite sides to each other. Therefore, the connection work of the first sub-harness 10 and the second sub-harness 20 can be performed more easily.

[0024] As described above, the floor harness 1 of this embodiment includes the first sub-harness 10, the second sub-harness 20, the third sub-harness 30, and the electronic component 40. The third sub-harness 30 has the flat wiring material 31 that is flexible and routed between the first sub-harness 10 and the second sub-harness 20, the third connector 32 that is provided at one end of the flat wiring material 31 and connected to the first connector 12, and the fourth connector 33 that is provided at the other end of the flat wiring material 31 and connected to the second connector 22. The electronic component 40 is mounted on the flat wiring material 31 of the third sub-harness 30, and constitutes the ECU 2 of the vehicle 100. With this configuration, for example, the flat wiring material 31 and the ECU 2 can be integrated in the floor harness 1, and thus the wiring material (harness) that connects the flat wiring material 31 and the ECU 2 can be reduced. As a result, the floor harness 1 can improve the workability of the assembly work.

[0025] Furthermore, in the floor harness 1 of this embodiment, a plurality of electronic components 40 constituting the ECU 2 are mounted on the flat wiring material 31, and the plurality of electronic components 40 are distributed and arranged over a range between one end and the other end of the flat wiring material 31. With this configuration, the floor harness 1 can, for example, prevent the plurality of electronic components 40 from being arranged densely on the flat wiring material 31, and can therefore prevent a local temperature rise of the flat wiring material 31.

[0026] Furthermore, in the floor harness 1 of this embodiment, the ECU 2 is configured to include a first ECU 2A that controls a device connected to the first sub-harness 10 and a second ECU 2B that controls a device connected to the second sub-harness 20, and the electronic components 40 are configured to include a first electronic component 41 that constitutes the first ECU 2A and a second electronic component 42 that constitutes the second ECU 2B. With this configuration, the floor harness 1 can reduce, for example, the wiring material (harness) that connects the flat wiring material 31 and the first ECU 2A, the wiring material (harness) that connects the flat wiring material 31 and the second ECU 2B, and so on, thereby further improving the workability of the assembly work.

[0027] In this embodiment, an example has been given in which the flat wiring material 31 is mounted with a first electronic component 41 that constitutes the first ECU 2A and a second electronic component 42 that constitutes the second ECU 2B, but this example is not limited to this. For example, the flat wiring material 31 may be mounted with electronic components 40 that constitute one ECU 2, or with electronic components 40 that constitute three or more ECUs 2.

[0028] While the embodiments of the present invention have been described above, they are merely examples and are not intended to limit the scope of the invention. The above embodiments can be implemented in various other forms, and various omissions, substitutions, combinations, and modifications can be made without departing from the spirit of the invention. Furthermore, the specifications of each configuration, shape, and the like (structure, type, direction, format, size, length, width, thickness, height, number, arrangement, position, material, etc.) can be modified as appropriate. [Explanation of symbols]

[0029] 1 Floor harness 2 ECU 2A 1st ECU 2B Second ECU 10. First sub-harness 11 1st wiring material 12 First connector 20 Second sub-harness 21 2nd wiring material 22 Second connector 30 Third sub-harness 31 Flat wiring material 32 Third Connector 33 4th Connector 40 Electronic Components 41 First Electronic Parts 42 Secondary Electronic Components 100 vehicles 110 floors X Front-rear direction of the vehicle Y Vehicle width direction

Claims

1. a first sub-harness including a first wiring material provided at one end of a vehicle floor in a vehicle width direction and extending along a vehicle front-rear direction, and a first connector provided on the first wiring material; a second sub-harness including a second wiring member provided at the other end of the floor in the vehicle width direction and extending along the vehicle front-rear direction; and a second connector provided on the second wiring member; a third sub-harness including a flexible flat wiring material that is wired between the first sub-harness and the second sub-harness, a third connector that is provided at one end of the flat wiring material and connected to the first connector, and a fourth connector that is provided at the other end of the flat wiring material and connected to the second connector; an electronic component mounted on the flat wiring material of the third sub-harness and constituting an ECU of the vehicle; Equipped with a floor harness.

2. A plurality of electronic components constituting the ECU are mounted on the flat wiring material, and the plurality of electronic components are distributed and arranged over a range between the one end and the other end of the flat wiring material. The floor harness according to claim 1 .

3. The ECU includes a first ECU that controls a device connected to the first sub-harness and a second ECU that controls a device connected to the second sub-harness, The electronic components include a first electronic component constituting the first ECU and a second electronic component constituting the second ECU. The floor harness according to claim 1 or 2.

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