Harness wiring structure of the slide sheet

Abstract

To prevent excessive loads from acting on a harness, even when sliding a slide seat in a longitudinal direction and storing the slide seat in a space at a foot.SOLUTION: A harness arrangement structure 20 is provided with a harness regulation part 24 fixed to a slider 12 that moves along a longitudinal direction X together with a slide seat 200 to regulate a harness route of a harness 21. The harness regulation part 24 regulates the harness route by being along a middle part of the harness 21 which is extended along the longitudinal direction X from a vehicle body-side holding part 22 to a rear side B, then bent back to a front side F, and bent in a direction of getting close to the slide seat 200 to lead to a seat-side holding part 23.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a harness wiring structure for supplying power to electrical components incorporated in a slide seat.

Background Art

[0002] Conventionally, there has been a slide seat that slides in the front-rear direction of a vehicle body and can be stored in a foot space by pivoting it forward with the seat back reclined, so-called tilt-down (see Patent Document 1). Such a slide seat incorporates electrical components such as a seat belt reminder. Therefore, it is necessary to supply power from the vehicle body to these electrical components.

[0003] By the way, when the slide seat slides in the front-rear direction, the harness spanned between the vehicle body and the slide seat deforms as the slide seat moves. Also, when the slide seat is stored in the foot space, the harness deforms as the slide seat moves. Then, local bending (bending with a large curvature, that is, sharp bending with a tight degree of bending) occurs in the harness, and as a result, an excessive load may act on the harness.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide a harness wiring structure that can prevent an excessive load from acting on the harness even when the slide seat slides in the front-rear direction or the slide seat is stored in the foot space.

Means for Solving the Problems

[0006] The invention of the present application has rails extending in the front-rear direction of the vehicle body, a link arm is attached to a slider that is movable along the rails, and power is supplied to electrical components of a slide seat that is supported so as to be stowable in the foot space by a pivotal movement of the link arm. The harness routing structure includes a harness bridged between the vehicle body and the slide seat, a vehicle body side holding portion fixed to the vehicle body side to hold a base end portion of the harness, a seat side holding portion fixed to the slide seat side to hold a tip end portion of the harness, and a harness regulating portion fixed to the slide seat side to regulate a harness route of the harness. The harness regulating portion regulates the harness route by being in contact with an intermediate portion of the harness that extends to one side along the front-rear direction from the vehicle body side holding portion, then bends back to the other side, and is bent in a direction approaching the slide seat and reaches the seat side holding portion.

[0007] Further, the invention of the present application is also intended to include a harness regulating portion that constitutes the above-described harness routing structure. That is, a harness regulating portion of a harness routing structure that has rails extending in the front-rear direction of the vehicle body, a link arm is attached to a slider that is movable along the rails, and power is supplied to electrical components of a slide seat that is supported so as to be stowable in the foot space by a pivotal movement of the link arm. The harness regulating portion regulates the harness route by being in contact with an intermediate portion of the harness that extends to one side along the front-rear direction from a vehicle body side holding portion that holds a base end portion of a harness bridged between the vehicle body and the slide seat, then bends back to the other side, and is bent in a direction approaching the slide seat and reaches a seat side holding portion that holds a tip end portion of the harness.

[0008] According to these inventions, it is possible to prevent an excessive load from acting on the harness even when the slide seat is slid in the front-rear direction or the slide seat is stowed in the foot space. Specifically, in the harness routing structure and the harness restricting portion according to the invention of the present application, the harness restricting portion extends from the vehicle body side holding portion in one direction along the longitudinal direction and then bends back to the other side, and is bent in a direction approaching the slide seat (in the state where the slide seat is deployed from the foot space, it is bent upward) and is in contact with the middle portion of the harness reaching the seat side holding portion to regulate the harness route. Therefore, in the middle portion of the harness separated from both the vehicle body side holding portion and the seat side holding portion, the deformation (displacement) of the harness can be suppressed to a small degree, and it is possible to prevent local bending (bending with a large curvature, that is, a sharp bend with a tight degree of bending) from occurring in the harness. Accordingly, even when the slide seat is slid in the longitudinal direction or the slide seat is stored in the foot space, it is possible to prevent an excessive load from acting on the harness.

[0009] As an aspect of the present invention, the harness restricting portion may be provided with a first bending restricting portion that is in contact with a portion of the harness bent from the direction toward the other side of the harness toward the direction approaching the slide seat in the state where the slide seat is deployed from the foot space and restricts the bending shape of the portion.

[0010] According to the present invention, in the state where the slide seat is deployed from the foot space, the harness is wound around the first bending restricting portion and bent along the first bending restricting portion. Therefore, it is possible to prevent a portion of the harness bent from the direction toward the other side of the harness toward the direction approaching the slide seat from having a radius smaller than the allowable bending radius. Accordingly, it is possible to prevent an excessive load from acting on the harness.

[0011] Also, as an aspect of the present invention, the first bending restricting portion may be an arcuate surface formed in the harness restricting portion, and the central axis of the arcuate surface may be arranged coaxially with the pivot center at the connecting portion of the link arm.

[0012] According to the present invention, when the harness follows the pivotal movement of the link arm and is wound around the arc surface which is the first bending regulation portion, it is possible to prevent the harness from being pulled and tensed. Therefore, it is possible to prevent an excessive load from acting on the harness. Also, when the harness is unwound from the arc surface which is the first bending regulation portion following the pivotal movement of the link arm, it is possible to prevent the harness from becoming greatly slack.

[0013] As another aspect of the present invention, the seat-side holding portion may be provided with a second bending regulation portion that abuts along a bent portion bent in the vicinity of the tip portion of the harness in a state where the slide sheet is stored in the foot space or in a state where the slide sheet is deployed from the foot space, and regulates the bending shape of the portion.

[0014] According to the present invention, in a state where the slide sheet is stored in the foot space or in a state where the slide sheet is deployed from the foot space, the harness is wound around the second bending regulation portion and bent along the second bending regulation portion. Therefore, it is possible to prevent the radius of the portion bent in the vicinity of the tip portion of the harness from becoming smaller than the allowable bending radius. Therefore, it is possible to prevent an excessive load from acting on the harness.

[0015] As another aspect of the present invention, the second bending regulation portion may be an arc surface formed on the seat-side holding portion, and the central axis of the arc surface may be arranged coaxially with the pivotal center at the connecting portion of the link arm.

[0016] According to the present invention, when the harness follows the pivotal movement of the link arm and is wound around the arc surface which is the second bending regulation portion, it is possible to prevent the harness from being pulled and tensed. Therefore, it is possible to prevent an excessive load from acting on the harness. Also, when the harness is unwound from the arc surface which is the second bending regulation portion following the pivotal movement of the link arm, it is possible to prevent the harness from becoming greatly slack.

[0017] As an aspect of the present invention, the harness regulating portion may be provided with a third bending regulation portion that abuts along a portion of the harness that is bent back from the direction toward one side to the direction toward the other side in a state where the slide sheet is slid to the one side, and regulates the bending shape of the portion.

[0018] According to the present invention, in a state where the slide sheet is slid to one side, the harness is wound around the third bending regulation portion and bent back along the third bending regulation portion. Therefore, it is possible to prevent a portion of the harness that is bent back from the direction toward one side to the direction toward the other side from having a radius smaller than the allowable bending radius. Accordingly, it is possible to prevent an excessive load from acting on the harness.

[0019] As an aspect of the present invention, the harness regulating portion may be provided with an extension regulation portion that regulates the harness path of a portion of the harness that extends to the other side in the harness. According to the present invention, it is possible to support an intermediate portion of the harness that is separated from both the vehicle body side holding portion and the seat side holding portion. Therefore, it is possible to prevent the intermediate portion of the harness from sagging due to gravity. Accordingly, it is possible to prevent the sagging harness from interfering with surrounding members.

[0020] As an aspect of the present invention, the extension regulation portion may be constituted by a pair of abutting surfaces arranged so as to sandwich the harness. According to the present invention, it is possible to suppress twisting in an intermediate portion of the harness that is separated from both the vehicle body side holding portion and the seat side holding portion. Therefore, it is possible to prevent the harness from being deformed into an unintended shape. Accordingly, it is possible to prevent the harness deformed into an unintended shape from interfering with surrounding members.

[0021] As an aspect of the present invention, a connector of the harness may be held by at least one of the vehicle body side holding portion and the seat side holding portion. According to the present invention, when a connector is held by the vehicle body side holding portion, it becomes possible to connect the harness routed on the vehicle body and the harness constituting the harness routing structure at the vehicle body side holding portion. Further, when a connector is held by the seat side holding portion, it becomes possible to connect the harness routed on the slide seat and the harness constituting the harness routing structure at the seat side holding portion. Furthermore, when connectors are held by the vehicle body side holding portion and the seat side holding portion, it becomes possible to change the specification of the harness bridged between the vehicle body and the slide seat. For example, it becomes possible to apply only a flexible flat cable to the harness bridged between the vehicle body and the slide seat.

[0022] As an aspect of the present invention, the harness may be routed in a gap between a floor panel constituting the vehicle body and a seat cushion constituting the slide seat. According to the present invention, the harness can be accommodated in the gap between the floor panel and the seat cushion. Therefore, it is possible to improve the aesthetics by making the harness invisible to the person sitting on the slide seat and the surrounding people.

Effect of the Invention

[0023] According to the present invention, it is possible to prevent an excessive load from acting on the harness even when the slide seat is slid in the front-rear direction or the slide seat is stored in the foot space.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Mode for Carrying Out the Invention

[0025] One embodiment of the present invention will be described in detail with reference to the drawings. In this application, the direction of the vehicle body 100 is shown in all the drawings. Specifically, the arrow F indicates the front side of the vehicle body, the arrow B indicates the rear side of the vehicle body, the arrow R indicates the right side of the vehicle body, and the arrow L indicates the left side of the vehicle body. And the arrow U indicates the upper side of the vehicle body, and the arrow D indicates the lower side of the vehicle body. In addition, in this application, the front-rear direction will be described as X, the left-right direction as Y, and the up-down direction as Z.

[0026] FIG. 1 is a perspective view of the seat support structure 10. FIG. 2 is a perspective view of the harness cable structure 20, and FIG. 3 is a side view of the harness cable structure 20. FIG. 4 is an enlarged perspective view of the seat side holding portion 23, and FIG. 5 is an enlarged side view of the seat side holding portion 23. FIG. 6 is an enlarged perspective view of the harness regulating portion 24, and FIG. 7 is an enlarged side view of the harness regulating portion 24. In FIG. 1, the slide sheet 200 is represented by a two-dot chain line so that the seat support structure 10 and the harness cable structure 20 can be seen. In FIG. 2, the slider 12 constituting the seat support structure 10 and the stay 24S for fixing the harness regulating portion 24 to the slider 12 are represented by a two-dot chain line.

[0027] Further, FIG. 8 is an explanatory view showing the operation mode of the seat support structure 10 when the slide sheet 200 slides forward to the front side F, and FIG. 9 is an explanatory view showing the operation mode of the harness cable structure 20 when the slide sheet 200 slides forward to the front side F. FIG. 10 is an explanatory view showing the operation mode of the seat support structure 10 when the slide sheet 200 slides backward to the rear side B, and FIG. 11 is an explanatory view showing the operation mode of the harness cable structure 20 when the slide sheet 200 slides backward to the rear side B. In FIGS. 8 and 10, the rail 11 on the left side L etc. are deleted so that the harness cable structure 20 can be seen. In FIGS. 9 and 11, not only the left side L but also the rail 11 on the right side R etc. are deleted, and the before and after of the operation are represented by a two-dot chain line and a solid line.

[0028] Furthermore, FIG. 12 is an explanatory diagram showing the operation mode of the seat support structure 10 when storing the slide sheet 200 in the foot space A, and FIG. 13 is an explanatory diagram showing the operation mode of the harness wiring structure 20 when storing the slide sheet 200 in the foot space A. FIG. 14 is an explanatory diagram showing the operation mode of the seat support structure 10 when deploying the slide sheet 200 from the foot space A, and FIG. 15 is an explanatory diagram showing the operation mode of the harness wiring structure 20 when deploying the slide sheet 200 from the foot space A. In FIGS. 12 and 14, the rails 11 on the left side L are deleted so that the harness wiring structure 20 can be seen. In FIGS. 13 and 15, not only the left side L but also the rails 11 on the right side R are deleted, and the before and after of the operation are represented by a two-dot chain line and a solid line.

[0029] As shown in FIG. 1, the vehicle body 100 has a floor panel 101. A seat support structure 10 for supporting the slide sheet 200 is provided on the vehicle body 100. The seat support structure 10 according to the present embodiment has a pair of rails 11, a pair of sliders 12, and four link arms 13.

[0030] The rails 11 extend along the front-rear direction X of the vehicle body 100. Each rail 11 is arranged in parallel at a predetermined interval and is fixed to the floor panel 101 constituting the vehicle body 100. An orbital groove 11r is formed along the front-rear direction X on the upper surface portion of each rail 11.

[0031] The slider 12 is supported in a state of being fitted into the orbital groove 11r of the rail 11. Therefore, each slider 12 is movable along the rail 11 (see arrow S). Through holes 12h penetrating in the left-right direction Y are formed in the front end portion and the rear end portion of each slider 12.

[0032] The link arm 13 has a connecting shaft 131 that protrudes in the left - right direction Y on the side surface portion at its base end side. The link arm 13 is pivotally connected to the slider 12 by inserting the connecting shaft 131 into a through - hole 12h formed in the slider 12. Therefore, each link arm 13 can pivot within a range of approximately 90 degrees from the front side F to the upper side U with the connecting shaft 131 as the pivot center (see arrow P).

[0033] Also, the link arm 13 has a connecting shaft 132 that protrudes in the left - right direction Y on the side surface portion at its tip end side. The link arm 13 is pivotally connected to the seat cushion 201 by inserting the connecting shaft 132 into a through - hole 20h formed in the seat cushion 201. Therefore, it can also be said that each link arm 13 can pivot within a range of approximately 90 degrees from the lower side D to the rear side B with the connecting shaft 132 as the pivot center (see FIGS. 12 and 14).

[0034] With such a configuration, the seat support structure 10 enables the slide seat 200 to slide in the front - rear direction X of the vehicle body 100 as the slider 12 moves along the rail 11. Also, the seat support structure 10 enables the slide seat 200 to be stored in the foot space A as the link arm 13 attached to the slider 12 pivots. In the seat support structure 10 according to the present embodiment, the slide seat 200 can be stored in the foot space A by releasing a latch (not shown) in a state where the seat back 202 is laid down and pivoting it toward the front side F.

[0035] As shown in FIG. 1, the seat support structure 10 is provided with a harness wiring structure 20 for supplying power to electrical components incorporated in the slide seat 200. As shown in FIG. 2, the harness wiring structure 20 includes a harness 21, a vehicle - side holding portion 22, a seat - side holding portion 23, and a harness regulating portion 24. Hereinafter, these members will be described in detail with reference to FIGS. 2 to 7.

[0036] The harness 21 is spanned between the vehicle body 100 and the slide seat 200. The harness 21 is configured by overlapping a plurality of flexible flat cables. Further, a connector 211 for accommodating terminal fittings fastened to each conductive plate is attached to the base end portion of the harness 21. Furthermore, a connector 212 for accommodating terminal fittings fastened to each conductive plate is also attached to the tip end portion thereof.

[0037] The harness 21 extends rearward B along the front-rear direction X from the vehicle body side holding portion 22, then bends back toward the front side F and is bent in a direction approaching the slide seat 200 to reach the seat side holding portion 23. The harness 21 is bent about a central axis C1 described later along the left-right direction Y and is bent back about a central axis C3 described later along the left-right direction Y in a predetermined state. Since the flexible flat cable constituting the harness 21 is formed in a band shape by sandwiching a conductive plate with an insulating sheet material, it has high flexibility in the thickness direction, and such a harness path can be formed.

[0038] The vehicle body side holding portion 22 is fixed to the side of the vehicle body 100 and holds the base end portion of the harness 21. The vehicle body side holding portion 22 is mainly composed of a connector holder 220, and the above-described connector 211 is accommodated in such a connector holder 220. Then, a connector 151 of a harness 150 routed to the vehicle body 100 is connected (joined) to this connector 211. As a result, the harness 150 routed to the vehicle body 100 and the harness 21 constituting the harness routing structure 20 are electrically connected. Note that the harness 150 routed to the vehicle body 100 is a bundle of so-called coated electric wires having a round cross-sectional shape.

[0039] In addition, the connector holder 220 has a main body portion 221 and fixed plate portions 222 that extend on both the left and right sides with the main body portion 221 interposed therebetween. An opening hole is provided in the upper front portion of the main body portion 221, and the connector 211 is accommodated in this opening hole. Therefore, the harness 21 is guided from the connector 211 through the inside of the main body portion 221 to the lower side D, and extends from the slit-shaped opening hole 22h provided in the rear surface of the main body portion 221 toward the rear side B. The connector holder 220 is fixed to the floor panel 101 that constitutes the vehicle body 100 by bolts 22B inserted through the fixed plate portions 222. However, it is not limited to the floor panel 101.

[0040] The seat-side holding portion 23 is fixed to the side of the slide seat 200 and holds the tip portion of the harness 21. The seat-side holding portion 23 is mainly constituted by a connector holder 230, and the connector 212 described above is accommodated in such a connector holder 230. And, the connector 252 of the harness 250 routed to the slide seat 200 is connected (joined) to this connector 212. As a result, the harness 250 routed to the slide seat 200 and the harness 21 that constitutes the harness routing structure 20 are electrically connected. The harness 250 routed to the slide seat 200 is a bundle of so-called coated electric wires having a round cross-sectional shape.

[0041] In addition, the connector holder 230 has a main body portion 231 and fixed plate portions 232 that extend on both the left and right sides with the main body portion 231 interposed therebetween. An opening hole is provided in the upper rear portion of the main body portion 231, and the connector 212 is accommodated in this opening hole. Therefore, the harness 21 is guided from the connector 212 through the inside of the main body portion 231 to the front side F, and extends from the slit-shaped opening hole 23h provided in the lower surface of the main body portion 231 toward the lower side D. The connector holder 230 is fixed to the seat cushion 201 that constitutes the slide seat 200 by bolts 23B inserted through the fixed plate portions 232. However, it is not limited to the seat cushion 201.

[0042] Furthermore, the connector holder 230 has a stepped portion 233 formed at the front end portion of the main body portion 231, and the above-described opening hole 23h is formed in the lower plate of the stepped portion 233. And the front plate 231f of the main body portion 231 extends downward toward the lower side D from the rear edge portion of the opening hole 23h. Also, the lower plate 231d is disposed perpendicular to the front plate 231f. At the corner portion of the front plate 231f and the lower plate 231d in the main body portion 231, a bending restriction portion 234 is provided. The bending restriction portion 234 is an arcuate surface 234s centered on a central axis C2 parallel to the left-right direction Y, and the harness 21 is wound around it when in a predetermined state. Note that the central axis C2 is arranged coaxially with the center line of the connecting shaft 132 of the link arm 13.

[0043] The harness restricting portion 24 is fixed to the side of the slide sheet 200 and restricts the harness path of the harness 21. The harness restricting portion 24 is mainly composed of a harness guide 240, and each restricting portion (bending restricting portions 244, 245 and stretching restricting portion 246) for restricting the harness path of the harness 21 is provided in such a harness guide 240. Note that each restricting portion has an effect independently, and at least one of them may be provided.

[0044] Also, the harness guide 240 has a lower body portion 241 and an upper body portion 242 that is offset slightly forward on the upper side U of the lower body portion 241. An opening hole is provided at the left end portion of the front surface of the lower body portion 241, and a stay 24S is inserted into this opening hole (see FIG. 2). The stay 24S is bent parallel to the front-rear direction X after extending to the right side R, and the tip side portion thereof is connected to the adjacent slider 12. Therefore, when the slider 12 moves in the front-rear direction X, the harness guide 240 also moves in the front-rear direction X. Note that the harness guide 240 is fixed to the slider 12 by a bolt 24B inserted through the tip side portion of the stay 24S. However, it is not limited to the slider 12.

[0045] Furthermore, the harness guide 240 has a stepped portion 243 formed at the boundary between the lower body portion 241 and the upper body portion 242, and a through groove 24g penetrating in the front-rear direction X is formed in this stepped portion 243. And from the lower edge portion on the inlet side in the through groove 24g toward the rear side B, the upper plate 241u of the lower body portion 241 extends. Also, a lower plate 241d is arranged in parallel with the upper plate 241u. A bending restriction portion 244 is provided between the rear end side portion of the upper plate 241u and the rear end side portion of the lower plate 241d in the lower body portion 241. The bending restriction portion 244 is an arcuate surface 244s centered on a central axis C3 parallel to the left-right direction Y, and the harness 21 is wound around it when in a predetermined state.

[0046] In addition, as described above repeatedly, the harness guide 240 has a through groove 24g penetrating in the front-rear direction X formed in the stepped portion 243. And from the upper edge portion on the outlet side in the through groove 24g formed in the stepped portion 243 toward the front side F, the lower plate 242d of the upper body portion 242 extends. Also, a front plate 242f is arranged perpendicular to the lower plate 242d. A bending restriction portion 245 is provided at the corner portion between the lower plate 242d and the front plate 242f in the upper body portion 242. The bending restriction portion 245 is an arcuate surface 245s centered on a central axis C1 parallel to the left-right direction Y, and the harness 21 is wound around it when in a predetermined state. Note that the central axis C1 is arranged coaxially with the center line of the connecting shaft 131 of the link arm 13.

[0047] Incidentally, a portion of the harness 21 extending toward the front side F in the harness 21 is inserted into a stepped portion 243 formed at the boundary between the lower main body portion 241 and the upper main body portion 242. Thereby, the harness path of the portion of the harness 21 extending toward the front side F can be regulated. Therefore, it can be said that the harness regulating portion 24 is provided with an extension regulating portion 246 for regulating the harness path of the portion of the harness 21 extending toward the front side F. Further, the harness 21 passes through a through groove 24g formed in the stepped portion 243. The through groove 24g is formed slightly wider than the thickness of the harness 21, and regulates the harness path of the harness 21 by the abutting surfaces 246s on the lower side D and the abutting surfaces 246s on the upper side U. For this reason, it can be said that the extension regulating portion 246 is constituted by a pair of abutting surfaces 246s, 246s arranged so as to sandwich the harness 21.

[0048] With such a configuration, the harness routing structure 20 can appropriately regulate the harness path both when the slide sheet 200 slides to the front side F and when it slides to the rear side B. Further, the harness routing structure 20 can appropriately regulate the harness path both when the slide sheet 200 is stored in the foot space A and when it is deployed from the foot space A. Hereinafter, the operation mode of the seat support structure 10 and the operation mode of the harness routing structure 20 will be described.

[0049] First, with reference to FIGS. 8 and 9, the operation mode of the seat support structure 10 and the operation mode of the harness routing structure 20 when the slide sheet 200 slides to the front side F will be described. FIG. 8(a) shows a state in which the slide sheet 200 is slid to the rearmost side B, and FIG. 8(b) shows a state in which the slide sheet 200 is slid to the foremost side F. In FIG. 9, the harness routing structure 20 corresponding to FIG. 8(a) is represented by a two-dot chain line, and the harness routing structure 20 corresponding to FIG. 8(b) is represented by a solid line.

[0050] When the slide sheet 200 is slid forward to the front side F, it is necessary to move the slider 12 forward to the front side F along the rail 11. Then, the link arm 13 attached to the slider 12 is also moved forward to the front side F, and the slide sheet 200 supported by the link arm 13 is also moved forward to the front side F (see arrow Sf). Note that when the slide sheet 200 is slid forward to the front side F, it is necessary to release a latch (not shown).

[0051] Also, when the slide sheet 200 is slid forward to the front side F, the harness regulating portion 24 moves forward to the front side F integrally with the slider 12 (see arrow Sf). Then, the harness regulating portion 24 moves away from the bent portion 21a in the harness 21 and approaches the vicinity of the front of the vehicle body side holding portion 22. In this way, in the state where the slide sheet 200 is slid to the most forward side F, the harness 21 is wound around the arc surface 245s which is the bending regulating portion 245 of the harness regulating portion 24. And the upper plate 241u and the lower plate 241d of the lower main body portion 241 and the lower plate 242d and the front plate 242f of the upper main body portion 242 are in contact with the harness 21 along.

[0052] In addition, in the harness routing structure 20 according to the present embodiment, even when the slide sheet 200 is slid forward to the front side F, the front plate 242f of the upper main body portion 242 in the harness regulating portion 24 and the front plate 231f of the main body portion 231 in the seat side holding portion 23 are in the same position in the front-rear direction X (a position without deviation). Therefore, the portion of the harness 21 extending upward toward the upper side U is in a state where the lower end side portion is in contact with the front plate 242f of the harness regulating portion 24 and the upper end side portion is in contact with the front plate 231f of the seat side holding portion 23.

[0053] Next, with reference to FIGS. 10 and 11, the operation mode of the sheet support structure 10 when the slide sheet 200 slides rearward to the rear side B and the operation mode of the harness routing structure 20 at that time will be described. FIG. 10(a) shows the state where the slide sheet 200 is slid to the most forward side F, and FIG. 10(b) shows the state where the slide sheet 200 is slid to the most rear side B. In FIG. 11, the harness routing structure 20 corresponding to FIG. 10(a) is represented by a two-dot chain line, and the harness routing structure 20 corresponding to FIG. 10(b) is represented by a solid line.

[0054] When the slide sheet 200 is slid rearward to the rear side B, it is necessary to move the slider 12 rearward to the rear side B along the rail 11. Then, the link arm 13 attached to the slider 12 is also moved rearward to the rear side B, and the slide sheet 200 supported by the link arm 13 is also moved rearward to the rear side B (see arrow Sb). Note that it is also necessary to release a latch (not shown) when the slide sheet 200 is slid rearward to the rear side B.

[0055] Also, when the slide sheet 200 is slid rearward to the rear side B, the harness regulation portion 24 moves rearward to the rear side B integrally with the slider 12 (see arrow Sb). Then, the harness regulation portion 24 moves away from the vehicle body side holding portion 22 and approaches until it contacts the bent portion 21a of the harness 21. In this way, in the state where the slide sheet 200 is slid to the most rear side B, not only the arc surface 245s which is the bending regulation portion 245 but also the arc surface 244s which is the bending regulation portion 244 are in a state where the harness 21 is wound around. And the upper plate 241u and the lower plate 241d of the lower main body portion 241 and the lower plate 242d and the front plate 242f of the upper main body portion 242 are in a state of being in contact with the harness 21.

[0056] In addition, in the harness routing structure 20 according to the present embodiment, even when the slide sheet 200 is slid rearward to the rear side B, the front plate 242f of the upper main body portion 242 in the harness restricting portion 24 and the front plate 231f of the main body portion 231 in the sheet side holding portion 23 are at the same position (a position without deviation) in the front-rear direction X. Therefore, the portion of the harness 21 extending upward toward the upper side U is in a state where the lower end portion thereof is in contact with the front plate 242f of the harness restricting portion 24 and the upper end portion thereof is in contact with the front plate 231f of the sheet side holding portion 23.

[0057] Next, with reference to FIGS. 12 and 13, the operation mode of the seat support structure 10 when the slide sheet 200 is stored in the foot space A and the operation mode of the harness routing structure 20 at that time will be described. FIG. 12(a) shows a state where the slide sheet 200 is deployed from the foot space A, FIG. 12(b) shows a state during the process of storing the slide sheet 200 in the foot space A, and FIG. 12(c) shows a state where the slide sheet 200 is stored in the foot space A. In FIG. 13, the harness routing structure 20 corresponding to FIG. 12(a) is represented by a two-dot chain line, and the harness routing structure 20 corresponding to FIG. 12(c) is represented by a solid line.

[0058] When storing the slide sheet 200 in the foot space A, it is necessary to move the slider 12 to the most rearward side B and pivot the link arm 13 attached to the slider 12 forward to the front side F. Then, the slide sheet 200 supported by the link arm 13 is stored in the foot space A on the front side F (see arrow Pd). When storing the slide sheet 200 in the foot space A, it is necessary to release a latch (not shown) with the seat back 202 laid down and pivot it forward to the front side F.

[0059] Also, when storing the slide sheet 200 in the foot space A, the portion of the harness 21 extending upward to the upper side U in the link arm 13 falls forward (see arrow Pd). Then, the harness 21 gradually increases its bending angle from the state of being wound around and bent by the arc surface 245s which is the bending restriction portion 245 of the harness restriction portion 24, and at the same time, the harness 21 gradually winds around and is bent by the arc surface 234s which is the bending restriction portion 234 of the seat side holding portion 23. Thus, in the state where the slide sheet 200 is stored in the foot space A, the harness 21 is unwound from the arc surface 245s which is the bending restriction portion 245 and newly wound around the arc surface 234s which is the bending restriction portion 234. Also, the harness 21 is wound around the arc surface 244s which is the bending restriction portion 244. Then, the upper plate 241u and the lower plate 241d of the lower main body portion 241 and the lower plate 242d of the upper main body portion 242 are in contact with the harness 21 along it.

[0060] In addition, in the harness routing structure 20 according to the present embodiment, when the slide sheet 200 is stored in the foot space A, the lower plate 242d of the upper main body portion 242 in the harness restriction portion 24 and the lower plate 231d of the main body portion 231 in the seat side holding portion 23 are at the same position in the vertical direction Z (a position without deviation). Therefore, the portion of the harness 21 extending toward the front side F is in a state where the rear end side portion is in contact with the lower plate 242d of the harness restriction portion 24 and the front end side portion is in contact with the lower plate 231d of the seat side holding portion 23.

[0061] Next, with reference to FIGS. 14 and 15, the operation mode of the seat support structure 10 when the slide sheet 200 is deployed from the foot space A and the operation mode of the harness routing structure 20 at that time will be described. FIG. 14(a) shows the state where the slide sheet 200 is stored in the foot space A, FIG. 14(b) shows the state during the deployment of the slide sheet 200 from the foot space A, and FIG. 14(c) shows the state where the slide sheet 200 is deployed from the foot space A. In FIG. 15, the harness routing structure 20 corresponding to FIG. 14(a) is represented by a two-dot chain line, and the harness routing structure 20 corresponding to FIG. 14(c) is represented by a solid line.

[0062] When the slide sheet 200 is deployed from the foot space A, the slider 12 should be in the most rearward position B, and the link arm 13 attached to the slider 12 needs to be pivoted upward to the upper side U. Then, the slide sheet 200 supported by the link arm 13 will be deployed from the foot space A to the upper side U (see arrow Pu). When deploying the slide sheet 200 from the foot space A, it is necessary to pivot the slide sheet 200 toward the upper side U to engage a latch (not shown) and raise the seat back 202.

[0063] Also, when the slide sheet 200 is deployed from the foot space A, the portion of the harness 21 extending to the front side F together with the link arm 13 stands up to the upper side U (see arrow Pu). Then, the bending angle of the harness 21 gradually increases from the state where it is wound around and bent by the arc surface 234s which is the bending restriction portion 234 of the seat-side holding portion 23. At the same time, the harness 21 gradually winds around and is bent by the arc surface 245s which is the bending restriction portion 245 of the harness restriction portion 24. Thus, in the state where the slide sheet 200 is deployed from the foot space A, the harness 21 is unwound from the arc surface 234s which is the bending restriction portion 234 and newly wound around the arc surface 245s which is the bending restriction portion 245. Also, the harness 21 is wound around the arc surface 244s which is the bending restriction portion 244. And the upper plate 241u and the lower plate 241d of the lower body portion 241 as well as the lower plate 242d and the front plate 242f of the upper body portion 242 are in contact with the harness 21 along.

[0064] In addition, in the harness routing structure 20 according to the present embodiment, when the slide sheet 200 is deployed from the foot space A, the front plate 242f of the upper main body portion 242 in the harness restricting portion 24 and the front plate 231f of the main body portion 231 in the seat side holding portion 23 are at the same position in the front-rear direction X (a position without displacement). Therefore, the portion of the harness 21 extending upward toward the upper side U is in a state where the lower end portion thereof is in contact with the front plate 242f of the harness restricting portion 24 and the upper end portion thereof is in contact with the front plate 231f of the seat side holding portion 23.

[0065] As described above, the harness routing structure 20 has a rail 11 extending in the front-rear direction X of the vehicle body 100, a link arm 13 is attached to a slider 12 that is movable along the rail 11, and power is supplied to the electrical components of the slide sheet 200 that is supported so as to be storable in the foot space A by the pivotal movement of the link arm 13. The harness routing structure 20 includes a harness 21 bridged between the vehicle body 100 and the slide sheet 200, a vehicle body side holding portion 22 fixed to the floor panel 101 of the vehicle body 100 and holding the base end portion of the harness 21, a seat side holding portion 23 fixed to the seat cushion 201 of the slide sheet 200 and holding the tip end portion of the harness 21, and a harness restricting portion 24 fixed to the slider 12 that moves along the front-rear direction X together with the slide sheet 200 and restricting the harness path of the harness 21. The harness restricting portion 24 is in contact with the middle portion of the harness 21 that extends rearward along the front-rear direction X from the vehicle body side holding portion 22 and then bends back to the front side F and bends in a direction approaching the slide sheet 200 to reach the seat side holding portion 23, and restricts the harness path.

[0066] According to such a harness routing structure 20, it is possible to prevent an excessive load from acting on the harness 21 even when the slide sheet 200 is slid in the front-rear direction X or the slide sheet 200 is stored in the foot space A. Specifically, in the harness routing structure 20 according to the invention of the present application, the harness regulation portion 24 extends from the vehicle body side holding portion 22 along the longitudinal direction X to the rear side B and then bends back to the front side F, and is bent in a direction approaching the slide seat 200 (in a state where the slide seat 200 is deployed from the foot space A, it is bent in a direction toward the upper side U), and is abutted along the middle portion of the harness 21 reaching the seat side holding portion 23 to regulate the harness path. Therefore, in the middle portion of the harness 21 separated from both the vehicle body side holding portion 22 and the seat side holding portion 23, the deformation (displacement) of the harness 21 can be suppressed to a small degree, and local bending (bending with a large curvature, that is, sharp bending with a tight degree of bending) of the harness 21 can be prevented from occurring. Accordingly, even when the slide seat 200 is slid in the longitudinal direction X or the slide seat 200 is stored in the foot space A, an excessive load can be prevented from acting on the harness 21.

[0067] Further, in the harness routing structure 20 according to the present embodiment, the harness regulation portion 24 is provided with a bending regulation portion 245 that abuts along a portion 21b bent from the direction toward the front side F in the harness 21 to the direction approaching the slide seat 200 in a state where the slide seat 200 is deployed from the foot space A, and regulates the bending shape of the portion 21b.

[0068] According to such a harness routing structure 20, in a state where the slide seat 200 is deployed from the foot space A, the harness 21 is wound around the bending regulation portion 245 and bent along the bending regulation portion 245. Therefore, it is possible to prevent the portion 21b bent from the direction toward the front side F in the harness 21 to the direction approaching the slide seat 200 from having a radius smaller than the allowable bending radius. Accordingly, an excessive load can be prevented from acting on the harness 21.

[0069] Further, in the harness routing structure 20 according to the present embodiment, the bending regulation portion 245 is an arcuate surface 245s formed on the harness regulation portion 24, and the central axis C1 of the arcuate surface 245s is coaxially arranged with respect to the pivot center at the connection portion of the link arm 13.

[0070] According to such a harness routing structure 20, when the harness 21 is wound around the arc surface 245s which is the bending restriction portion 245 following the pivotal movement of the link arm 13, it can be prevented from being pulled and tensed. Therefore, it can be prevented that an excessive load acts on the harness 21. Also, when the harness 21 is unwound from the arc surface 245s which is the bending restriction portion 245 following the pivotal movement of the link arm 13, it can be prevented from becoming greatly slack.

[0071] Also, in the harness routing structure 20 according to the present embodiment, in the seat-side holding portion 23, in a state where the slide sheet 200 is stored in the foot space A, a bending restriction portion 234 is provided which is in contact with and regulates the bending shape of a bent portion 21c (see FIG. 13) in the vicinity of the tip portion of the harness 21 along the bent portion 21c.

[0072] According to such a harness routing structure 20, in a state where the slide sheet 200 is stored in the foot space A, the harness 21 is wound around the bending restriction portion 234 and is bent along the bending restriction portion 234. Therefore, it can be prevented that the bent portion 21c bent in the vicinity of the tip portion of the harness 21 has a radius smaller than the allowable bending radius. Therefore, it can be prevented that an excessive load acts on the harness 21.

[0073] Also, in the harness routing structure 20 according to the present embodiment, the bending restriction portion 234 is an arc surface 234s formed in the seat-side holding portion 23, and the central axis C2 of the arc surface 234s is arranged coaxially with respect to the pivotal center at the connecting portion of the link arm 13.

[0074] According to such a harness routing structure 20, when the harness 21 is wound around the arc surface 234s which is the bending restriction portion 234 following the pivotal movement of the link arm 13, it can be prevented from being pulled and tensed. Therefore, it can be prevented that an excessive load acts on the harness 21. Further, when the harness 21 is unwound from the arc surface 234s which is the bending restriction portion 234 following the pivotal movement of the link arm 13, it can be prevented from becoming greatly slack.

[0075] Also, in the harness routing structure 20 according to the present embodiment, in a state where the slide sheet 200 is slid to the rear side B, a bending restriction portion 244 is provided along the portion 21a of the harness 21 that is bent back from the direction toward the rear side B to the direction toward the front side F to restrict the bending shape of the portion 21a in the harness regulation portion 24.

[0076] According to such a harness routing structure 20, in a state where the slide sheet 200 is slid in the direction toward the rear side B, the harness 21 is wound around the bending restriction portion 244 and is bent back along the bending restriction portion 244. Therefore, it can be prevented that the portion 21a of the harness 21 that is bent back from the direction toward the rear side B to the front side F has a radius smaller than the allowable bending radius. Therefore, it can be prevented that an excessive load acts on the harness 21.

[0077] Also, in the harness routing structure 20 according to the present embodiment, an extension restriction portion 246 for restricting the harness path of the portion of the harness 21 extending on the front side F is provided in the harness regulation portion 24. According to such a harness routing structure 20, the middle portion of the harness 21 separated from both the vehicle body side holding portion 22 and the seat side holding portion 23 can be supported. Therefore, it can be prevented that the middle portion of the harness 21 sags due to gravity. Therefore, it can be prevented that the sagging harness 21 interferes with surrounding members.

[0078] Further, in the harness routing structure 20 according to the present embodiment, the stretching restriction portion 246 is composed of a pair of abutting surfaces 246s, 246s arranged so as to sandwich the harness 21. According to such a harness routing structure 20, it is possible to suppress twisting at an intermediate portion of the harness 21 that is separated from both the vehicle body side holding portion 22 and the seat side holding portion 23. Therefore, it is possible to prevent the harness 21 from being deformed into an unintended shape. Accordingly, it is possible to prevent the harness 21 deformed into an unintended shape from interfering with surrounding members.

[0079] Further, in the harness routing structure 20 according to the present embodiment, the connectors 211, 212 of the harness 21 are held by the vehicle body side holding portion 22 and the seat side holding portion 23. According to such a harness routing structure 20, it becomes possible to change the specifications of the harness 21 spanned between the vehicle body 100 and the slide seat 200. For example, it becomes possible to apply only a flexible flat cable to the harness 21 spanned between the vehicle body 100 and the slide seat 200.

[0080] Further, in the harness routing structure 20 according to the present embodiment, the harness 21 is routed in a gap between the floor panel 101 constituting the vehicle body 100 and the seat cushion 201 constituting the slide seat 200. According to such a harness routing structure 20, the harness 21 can be accommodated in the gap between the floor panel 101 and the seat cushion 201. Therefore, it becomes possible to improve the aesthetic appearance by making the harness 21 invisible to the person sitting on the slide seat 200 and the surrounding persons.

[0081] In the correspondence between the configuration of the present invention and the above-described embodiment, the seat support structure corresponds to the seat support structure 10, the rail corresponds to the rail 11, the slider corresponds to the slider 12, the link arm corresponds to the link arm 13, the harness routing structure corresponds to the harness routing structure 20, The harness corresponds to harness 21, The vehicle body side holding part corresponds to vehicle body side holding part 22, The seat side holding part corresponds to seat side holding part 23, The second bending restricting part corresponds to bending restricting part 234, The arc surface corresponds to arc surface 234s, The harness restricting part corresponds to harness restricting part 24, The third bending restricting part corresponds to bending restricting part 244, The arc surface corresponds to arc surface 244s, The first bending restricting part corresponds to bending restricting part 245, The arc surface corresponds to arc surface 245s, The extension restricting part corresponds to extension restricting part 246, The abutting surface corresponds to abutting surface 246s, The connector corresponds to connectors 211, 212, The vehicle body corresponds to vehicle body 100, The floor panel corresponds to floor panel 101, The slide seat corresponds to slide seat 200, The seat cushion corresponds to seat cushion 201, The foot space corresponds to foot space A, This invention is not limited to only the configurations of the foregoing embodiments, and many embodiments can be obtained.

[0082] For example, in the harness routing structure 20 disclosed in the present application, a step portion 233 is formed in a main body portion 231 that constitutes the seat side holding portion 23, and an opening hole 23h through which the harness 21 is inserted is formed in a lower plate of the step portion 233. However, as shown in FIG. 16, an opening hole 23h through which the harness 21 is inserted is formed in a rear plate of the main body portion 231 that constitutes the seat side holding portion 23, and even if the harness 21 is wound around the bending restricting portion 234 in a state where the slide seat 200 is deployed from the foot space A, it may be acceptable.

[0083] According to such a harness routing structure 20, when the slide sheet 200 is stored in the foot space A, the bent portion 21c bent in the vicinity of the tip portion of the harness 21 will gradually increase in bending angle. Conversely, when the slide sheet 200 is deployed from the foot space A, it will be gradually bent in the vicinity of the tip portion of the harness 21. That is, it can be said that the sheet-side holding portion 23 is provided with a bending restricting portion 234 that abuts along the bent portion 21c bent in the vicinity of the tip portion of the harness 21 and restricts the bending shape of the portion 21c in a state where the slide sheet 200 is deployed from the foot space A.

[0084] Further, in the harness routing structure 20 disclosed in the present application, the harness 21 extends rearward B along the front-rear direction X from the vehicle body side holding portion 22, then is bent back toward the front side F, and is bent in a direction approaching the slide sheet 200 (in a state where the slide sheet 200 is deployed from the foot space A, it is a direction toward the upper side U) and reaches the sheet side holding portion 23. However, it may also be configured such that after extending forward F along the front-rear direction X from the vehicle body side holding portion 22, it is bent back toward the rear side B and is bent in a direction approaching the slide sheet 200 (in a state where the slide sheet 200 is deployed from the foot space A, it is a direction toward the upper side U) and reaches the sheet side holding portion 23.

[0085] The present invention also includes a harness regulating portion 24 that constitutes the above-described harness routing structure 20. That is, a rail 11 extending in the front-rear direction X of the vehicle body 100 is provided, a link arm 13 is attached to a slider 12 that is movable along the rail 11, and power is supplied to the electrical components of the slide seat 200 that is supported so as to be storable in the foot space A by the pivotal movement of the link arm 13. The harness regulating portion 24 of the harness routing structure 20 is along the middle portion of the harness 21 that extends rearward in the front-rear direction X from the vehicle body side holding portion 22 that holds the base end portion of the harness 21 spanned between the vehicle body 100 and the slide seat 200, is bent back to the front side F after being bent, and is bent in a direction approaching the slide seat 200 to reach the seat side holding portion 23 that holds the tip portion of the harness 21, and also includes a harness regulating portion 24 that regulates the harness path.

[0086] Also in this case, the same effects as those of the harness routing structure 20 according to the above-described embodiment are achieved. That is, in the middle portion of the harness 21 separated from both the vehicle body side holding portion 22 and the seat side holding portion 23, the deformation (displacement) of the harness 21 is suppressed to a small level, and it is possible to prevent local bending (bending with a large curvature, that is, sharp bending with a tight degree of bending) from occurring in the harness 21. Therefore, even when the slide seat 200 is slid in the front-rear direction X or the slide seat 200 is stored in the foot space A, it is possible to prevent an excessive load from acting on the harness 21.

[0087] Finally, the harness routing structure 1 disclosed in the present application has been described assuming that the harness 21 is a flexible flat cable. However, it may be a so-called covered electric wire having a round cross-sectional shape. Alternatively, it may be a so-called ribbon wire having a flat cross-sectional shape.

Explanation of Reference Numerals

[0088] 10... Seat support structure 11... Rail 12... Slider 13... Link arm 20... Harness routing structure 21…Harness 22…Vehicle body side holding part 23…Seat side holding part 234…Bending restricting part 234s…Arc surface 24…Harness restricting part 244…Bending restricting part 244s…Arc surface 245…Bending restricting part 245s…Arc surface 246…Extension restricting part 246s…Adjacent surface 211…Connector 212…Connector 100…Vehicle body 101…Floor panel 200…Slide seat 201…Seat cushion A…Foot space

Claims

1. A harness wiring structure for supplying power to an electrical component of a slide seat that has a rail extending in the longitudinal direction of the vehicle body, a link arm is attached to a slider that is movable along the rail, and is supported so as to be stowable in the foot space by the pivotal movement of the link arm, comprising: a harness spanned between the vehicle body and the slide seat; a vehicle body side holding portion fixed to the side of the vehicle body and holding the base end portion of the harness; a seat side holding portion fixed to the side of the slide seat and holding the tip end portion of the harness; and a harness regulating portion fixed to the side of the slide seat and regulating the harness path of the harness, wherein the harness regulating portion is in contact with an intermediate portion of the harness that extends in one direction along the longitudinal direction from the vehicle body side holding portion, then bends back to the other side, and is bent in a direction approaching the slide seat to reach the seat side holding portion, and regulates the harness path. A harness wiring structure.

2. The harness wiring structure according to claim 1, wherein the harness regulating portion is provided with a first bending regulating portion that is in contact with a portion of the harness bent from the direction toward the other side of the harness in a direction approaching the slide seat in a state where the slide seat is deployed from the foot space, and regulates the bending shape of the portion. The harness wiring structure according to claim 1.

3. The harness wiring structure according to claim 2, wherein the first bending regulating portion is an arcuate surface formed on the harness regulating portion, and a central axis of the arcuate surface is arranged coaxially with a pivot center at a connecting portion of the link arm. The harness wiring structure according to claim 2.

4. The harness wiring structure according to any one of claims 1 to 3, wherein the seat side holding portion is provided with a second bending regulating portion that is in contact with a portion of the harness bent in the vicinity of the tip end portion of the harness in a state where the slide seat is stored in the foot space or deployed from the foot space, and regulates the bending shape of the portion. The harness wiring structure according to any one of claims 1 to 3.

5. The harness wiring structure according to claim 4, wherein the second bending regulating portion is an arcuate surface formed on the seat side holding portion, and a central axis of the arcuate surface is arranged coaxially with a pivot center at a connecting portion of the link arm. The harness wiring structure according to claim 4.

6. In the harness regulating portion, in a state where the slide sheet is slid to the one side, a third bending regulation portion is provided which is in contact with a portion bent back from the direction toward the one side to the direction toward the other side in the harness and regulates the bending shape of the portion. The harness routing structure according to any one of claims 1 to 5.

7. In the harness regulating portion, an extension regulating portion is provided which regulates the harness route of a portion extended to the other side in the harness. The harness routing structure according to any one of claims 1 to 6.

8. The extension regulating portion is composed of a pair of abutting surfaces arranged so as to sandwich the harness. The harness routing structure according to claim 7.

9. A connector of the harness is held by at least one of the vehicle body side holding portion and the seat side holding portion. The harness routing structure according to any one of claims 1 to 8.

10. The harness is routed in a gap between a floor panel constituting the vehicle body and a seat cushion constituting the slide sheet. The harness routing structure according to any one of claims 1 to 9.

11. A harness regulating portion of a harness routing structure for supplying power to an electrical component of a slide sheet having a rail extending in the front-rear direction of the vehicle body, a link arm being attached to a slider movable along the rail and being supported so as to be storable in a foot space by a pivotal movement of the link arm, which is in contact with an intermediate portion of the harness reaching a seat side holding portion that holds a tip portion of the harness, the intermediate portion being bent back to the other side after being extended to one side along the front-rear direction from a vehicle body side holding portion that holds a base end portion of the harness spanned between the vehicle body and the slide sheet and being bent in a direction approaching the slide sheet, and regulates the harness route. Harness regulating portion.

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