Seat harness

Abstract

To provide a seat harness capable of improving workability in assembly work.SOLUTION: A seat harness 1 comprises: a flat wiring member 10 that is flexible, disposed inside a seat portion 111 of a slide seat 110 of a vehicle 100, and bent in accordance with sliding movement of the seat portion 111; an electronic component 20 that is mounted on the flat wiring member 10 and constitutes an ECU 2 of the vehicle 100; a connector 30 that is provided at an end portion of the flat wiring member 10 and electrically connected to the electronic component 20 constituting the ECU 2; and a wiring member 40 that is connected to the flat wiring member 10 via the connector 30, and electrically connects the electronic component 20 constituting the ECU 2 and a device provided in the slide seat 110.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] As an example of technology relating to conventional seat harnesses, Patent Document 1 discloses a seat harness that includes a flexible flat wiring material that is provided inside the seat portion of a vehicle's sliding seat and bends in accordance with the sliding movement of the seat portion, a connector that is provided at the end of the flat wiring material, and a wiring material that is connected to the flat wiring material via the connector. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-146941 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in the seat harness described in the above-mentioned Patent Document 1, for example, the device provided on the sliding seat may be electrically connected to the ECU via a flat wiring material or wiring material, 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 an object of the present invention is to provide a seat harness that can improve the workability of assembly work. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the seat harness of the present invention comprises a flexible flat wiring material that is arranged inside the seat portion of a sliding seat of a vehicle and bends in accordance with the sliding movement of the seat portion, electronic components that are mounted on the flat wiring material and constitute the ECU of the vehicle, a connector that is arranged at the end of the flat wiring material and is electrically connected to the electronic components that constitute the ECU, and a wiring material that is connected to the flat wiring material via the connector and electrically connects the electronic components that constitute the ECU to a device arranged in the sliding seat. [Effects of the Invention]

[0007] In the seat harness according to the present invention, electronic components constituting the vehicle's ECU are mounted on the flat wiring material, and the electronic components are electrically connected to a device provided in the sliding seat via the wiring material. With this configuration, the seat harness can integrate the flat wiring material and the ECU, for example, and thus can reduce the wiring material (harness) connecting the flat wiring material and the ECU. As a result, the seat 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 slide seat to which a seat harness according to an embodiment is applied. [Figure 2] FIG. 2 is an exemplary perspective view of a seat 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 sliding seat 110 to which a seat harness 1 according to an embodiment is applied. The seat harness 1 of this embodiment shown in Fig. 1 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 seat harness 1 of this embodiment is provided, for example, in a sliding seat 110 of the vehicle 100, and routed inside a seat surface 111 of the sliding seat 110. The sliding seat 110 is a seat provided in the driver's seat, passenger seat, rear seat, etc. of the vehicle 100, and is supported slidably along the vehicle longitudinal direction X via a pair of slide rails 120 provided at both ends in the vehicle transverse direction Y.

[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 seat harness 1, etc. The vehicle width direction Y typically corresponds to the overall width direction of the vehicle 100, the width direction of the seat 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 seat harness 1, the stacking direction of the non-bent portion 11 and the bent portion 12 of the seat harness 1 (described later), etc. Unless otherwise specified, the directions used in the following description will be described as directions in a state in which the seat harness 1 is assembled to the vehicle 100.

[0012] FIG. 2 is a perspective view of the seat harness 1. As shown in FIG. 2, the seat harness 1 of this embodiment is configured to include, for example, a flat wiring material 10, electronic components 20 constituting an ECU 2, a connector 30, and a wiring material 40. The flat wiring material 10 is a wiring material that constitutes the seat harness 1, and is configured, for example, by FPC (Flexible Printed Circuits) or FFC (Flexible Flat Cable). The flat wiring material 10 is a thin, flexible, flat wiring material. The flat wiring material 10 is configured to include, for example, a base film, a wiring pattern, and a cover lay.

[0013] The base film is a substrate that has excellent flexibility and determines the overall shape of the flat wiring material 10. 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 multiple conductor circuit portions (pattern layers). The wiring pattern is formed, for example, from a conductive material such as copper foil and 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.

[0014] The flat wiring material 10 is formed as a whole in a horizontally elongated rectangular shape along the vehicle longitudinal direction X. That is, the flat wiring material 10 has a pair of first end portions 10a as short side portions and a pair of second end portions 10b as long side portions. The first end portions 10a are end portions on both sides of the flat wiring material 10 in the vehicle longitudinal direction X, and the second end portions 10b are end portions on both sides of the flat wiring material 10 in the vehicle width direction Y. In this embodiment, a connector 30 is provided at each of the first end portion 10a and the second end portion 10b.

[0015] Specifically, the flat wiring material 10 is provided with, for example, four connectors 30. Here, one connector 30 is provided at one of the pair of first end portions 10a, one connector 30 is provided at one of the pair of second end portions 10b, and two connectors 30 are provided at the other of the pair of second end portions 10b. These connectors 30 are connected to the wiring material 40 via the first connector 41 on the wiring material 40 side.

[0016] The multiple connectors 30 are electrically connected to the wiring pattern of the flat wiring material 10 and to electronic components 20 constituting the ECU 2 described below. The multiple 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 provided in the sliding seat 110. The signal GND circuit is a circuit associated with the signal circuit that provides electrical continuity between the above devices and adjusts the potentials that serve as the reference for circuit operation between the devices. The power earth circuit is a circuit that grounds the power supply systems of the above devices.

[0017] The wiring material 40 is a wiring module having one end connected to the flat wiring material 10 and the other end connected to a device provided in the sliding seat 110. In this embodiment, the seat harness 1 is provided with four wiring materials 40 corresponding to the connectors 30. Each wiring material 40 is configured to include a plurality of conductive electric wires, a first connector 41 provided at one end of the plurality of electric wires and connected to the connector 30 of the flat wiring material 10, and a second connector 42 (see FIG. 1) provided at the other end of the plurality of electric wires and connected to a device on the sliding seat 110 side. The plurality of electric wires are, for example, insulated electric wires having a conductor portion formed by twisting together a plurality of linear metal wires and an insulating coating covering the outside of the conductor portion.

[0018] The plurality of electronic components 20 are mounted on the flat wiring material 10 to constitute the ECU 2 of the vehicle 100. Here, the plurality of electronic components 20 are arranged spaced apart from each other on the back surface of the flat wiring material 10, i.e., the surface opposite the seat surface of the seat portion 111 in the vehicle height direction Z. The plurality of electronic components 20 include, for example, chips such as a CPU (Central Processing Unit), sensors, etc. In this way, in this embodiment, the ECU 2 and the flat wiring material 10 are integrated by directly mounting the electronic components 20 on the flat wiring material 10. Note that the flat wiring material 10 may be provided with, for example, a cover or the like to protect the electronic components 20.

[0019] Here, in this embodiment, the flat wiring material 10 is configured to include, for example, a non-bending portion 11, a bending portion 12, and a fixing portion 13. The non-bending portion 11 is a portion of the flat wiring material 10 that is fixed to the seating surface portion 111. The non-bending portion 11 is formed in a planar shape extending along the seating surface portion 111. In this embodiment, a plurality of electronic components 20 that constitute the ECU 2 are mounted on this non-bending portion 11. That is, the plurality of electronic components 20 are configured to be unable to bend by following the bending portion 12, etc. of the flat wiring material 10. The non-bending portion 11 is fixed to the seating surface portion 111 via an adhesive layer, for example, an adhesive or double-sided tape. The length of the non-bending portion 11 along the vehicle longitudinal direction X is formed to be approximately equal to the length of the adhesive layer along the vehicle longitudinal direction X.

[0020] The fixing portion 13 is a portion of the flat wiring material 10 that is fixed to the floor side of the vehicle 100 (the support side of the sliding seat 110). The fixing portion 13 is provided at the first end 10a of the pair of first end portions 10a of the flat wiring material 10 on the connector 30 side (the side opposite to the non-bending portion 11). In this embodiment, the non-bending portion 11 is configured to be slidable along the vehicle longitudinal direction X together with the bending portion 12 relative to the fixing portion 13. Note that in this embodiment, three of the four connectors 30 described above are provided in the non-bending portion 11, while the remaining one of the four connectors 30 is provided in the fixing portion 13. Therefore, in this embodiment, when the seat portion 111 slides along the vehicle longitudinal direction X, the three connectors 30 on the non-bending portion 11 side move relative to the one connector 30 on the fixing portion 13 side along the vehicle longitudinal direction X.

[0021] The bent portion 12 is a portion of the flat wiring material 10 that is bent relative to the non-bent portion 11 and the fixed portion 13. When viewed from the vehicle width direction Y, the bent portion 12 includes, for example, a first bent portion that protrudes in an arc shape toward one side of the vehicle longitudinal direction X, and a second bent portion that is connected to the first bent portion and protrudes in an arc shape toward the other side of the vehicle longitudinal direction X. That is, in this embodiment, the flat wiring material 10 is configured so that the non-bent portion 11 and the bent portion 12 have an S-shaped cross-sectional shape. The bent portion 12 functions as an excess length portion for absorbing displacement of the flat wiring material 10 accompanying sliding movement of the seat portion 111 along the vehicle longitudinal direction X. In this embodiment, one end of the bending portion 12 is connected to the non-bending portion 11 and configured to be able to slide together with the non-bending portion 11 and the seat portion 111, while the other end is connected to the fixed portion 13 and configured to be able to not slide together with the fixed portion 13 and the seat portion 111.

[0022] As described above, the seat harness 1 of this embodiment is configured to include the flat wiring material 10. Therefore, the seat harness 1 configured with the flat wiring material 10 is lighter than a general wire harness in which various electric wires are bundled. Here, when the above-mentioned seat harness 1 is installed on the sliding seat 110, if the wire harness is configured entirely of electric wires, there is a risk that the overall weight will increase. In this regard, according to this embodiment, since the seat harness 1 is configured to include the flat wiring material 10, it is possible to accommodate an increase in the size of the seat harness 1 while suppressing an increase in the overall weight.

[0023] In addition, the seat harness 1, which is generally made up of various types of wires bundled together, is generally manufactured manually by a worker. In contrast, the flat wiring material 10 can be manufactured automatically, and therefore, by configuring the seat harness 1 with the flat wiring material 10, the number of steps required to manufacture the seat harness 1 can be reduced. In addition, in this embodiment, the wiring material 40 can be attached and detached using the connector 30 of the flat wiring material 10. Therefore, in the final step of manufacturing the seat harness 1, the worker simply needs to connect the wiring material 40 prepared in advance to the flat wiring material 10. For example, the worker can first attach the flat wiring material 10, before the wiring material 40 is connected, to the inside of the seat surface portion 111, and then connect the individual wiring materials 40 to the flat wiring material 10, thereby assembling the entire seat harness 1.

[0024] In addition, in this embodiment, the flat wiring material 10 is flexible, so the seat harness 1 can be easily adapted to various mounting portions such as the seat surface 111 of the slide seat 110. In addition, in this embodiment, one or more connectors 30 are installed at each of the first end 10a and the second end 10b of the flat wiring material 10, so that the flat wiring material 10 can connect multiple wiring materials 40 from opposite sides to each other. Therefore, the connection work of multiple wiring materials 40 can be performed more easily.

[0025] As described above, the seat harness 1 of this embodiment includes the flat wiring material 10, which is flexible and disposed inside the seat cushion 111 of the sliding seat 110 of the vehicle 100, and which bends in response to the sliding movement of the seat cushion 111; the electronic components 20 mounted on the flat wiring material 10 and constituting the ECU 2 of the vehicle 100; the connector 30 disposed at the end of the flat wiring material 10 and electrically connected to the electronic components 20 constituting the ECU 2; and the wiring material 40 connected to the flat wiring material 10 via the connector 30 and electrically connecting the electronic components 20 constituting the ECU 2 to a device disposed in the sliding seat 110. With this configuration, the seat harness 1 can, for example, integrate the flat wiring material 10 and the ECU 2, thereby reducing the wiring material (harness) connecting the flat wiring material 10 and the ECU 2. As a result, the seat harness 1 can improve the workability of assembly work.

[0026] Moreover, in the seat harness 1 of this embodiment, the flat wiring material 10 has a non-bending portion 11 that is fixed to the seat surface portion 111 and formed in a planar shape along the seat surface portion 111, and the electronic components 20 that constitute the ECU 2 are mounted on the non-bending portion 11. With this configuration, the seat harness 1 can, for example, more appropriately arrange the electronic components 20 that constitute the ECU 2 on the flat wiring material 10 by the non-bending portion 11, and thus can suppress the influence on the electronic components 20 (ECU 2) that is caused by the sliding movement of the seat surface portion 111.

[0027] Moreover, in the seat harness 1 of this embodiment, the flat wiring material 10 has a bent portion 12 provided in a bent state relative to the non-bent portion 11, and one end of the bent portion 12 is connected to the non-bent portion 11 and configured to be slidable integrally with the seat surface portion 111 together with the non-bent portion 11, and the other end is configured to be unslidable integrally with the seat surface portion 111. With this configuration, the seat harness 1 can be bent by, for example, the flat wiring material 10 more appropriately following the sliding movement of the seat surface portion 111 by the bent portion 12 having one end that is movable and the other end that is fixed.

[0028] In addition, in the seat harness 1 of this embodiment, the flat wiring material 10 is configured so that the non-bending portion 11 and the bending portion 12 have an S-shaped cross section. With this configuration, the seat harness 1 can bend the flat wiring material 10 by utilizing the reaction force of the bending portion 12 having an S-shaped cross section, for example, and thus the flat wiring material 10 can be bent by more appropriately following the sliding movement of the seat surface portion 111.

[0029] In the present embodiment, the flat wiring material 10 is exemplified as being configured such that the non-bending portion 11 and the bent portion 12 have an S-shaped cross section, but the present embodiment is not limited to this example, and for example, the non-bending portion 11 and the bent portion 12 may be configured to have a C-shaped cross section. Also, in the present embodiment, the sliding seat 110 is exemplified as being configured such that the seat portion 111 and the backrest portion 112 slide together along the vehicle longitudinal direction X, but the present embodiment is not limited to this example, and for example, the seat portion 111 may slide (move relative to) the backrest portion 112 along the vehicle longitudinal direction X.

[0030] 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]

[0031] 1 seat harness 2 ECU 10 Flat wiring material 11 Non-bending part 12 Bend 13 Fixed part 20 Electronic Components 30 connectors 40 Routing material 100 vehicles 110 Slide Sheet 111 Seat part

Claims

1. A flexible flat wiring material that is provided inside a seat portion of a sliding seat of a vehicle and bends in accordance with the sliding movement of the seat portion; An electronic component mounted on the flat wiring material and constituting an ECU of the vehicle; a connector provided at an end of the flat wiring material and electrically connected to the electronic components constituting the ECU; A wiring material connected to the flat wiring material via the connector and electrically connecting the electronic components constituting the ECU and a device provided in the slide seat; Equipped with a seat harness.

2. The flat wiring material has a non-bent portion fixed to the seat surface portion and formed in a planar shape along the seat surface portion, and the electronic components constituting the ECU are mounted on the non-bent portion. The seat harness according to claim 1 .

3. The flat wiring material has a bent portion provided in a bent state relative to the non-bent portion, and one end of the bent portion is connected to the non-bent portion and configured to be slidable integrally with the seat portion together with the non-bent portion, and the other end is configured to be unslidable integrally with the seat portion. The seat harness according to claim 2.

4. The flat wiring material is configured so that the non-bent portion and the bent portion have an S-shaped or C-shaped cross-sectional shape. The seat harness according to claim 3.

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