JP2011162134A - Routing structure of wiring harness for slide sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To route a wiring harness between a vehicle body floor and a slide seat without the need for providing a new harness slide rail for routing the wiring harness. <P>SOLUTION: In a seat rail, a wheel passing space having a rectangular cross section with its upper surface closed and rotatably fitting wheels of seat legs of the slide seat thereinto is provided continuously in the longitudinal direction of the seat rail on both the sides of an upper surface open space which is formed continuously in the longitudinal direction. In front of the seat rail, an extra length absorbing part is provided which absorbs and stores an extra length part of the wiring harness. The vehicle body connection side of the wiring harness is fixed to the extra length absorbing part or a vehicle floor. The wiring harness with the extra length part absorbed in the extra length absorbing part is slidably inserted through the wheel passing space, and the seat connection side of the wiring harness is drawn to the upper surface open space in front of the wheel of the seat leg and is fixed to the front end of the seat leg. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  More particularly, the present invention relates to a wiring harness wiring structure for a slide seat, and more specifically, a wiring harness is arranged between a vehicle body floor and a sliding seat with a simple structure without newly providing a slide rail for wiring the wiring harness. Is to be routed.

  A vehicle seat is equipped with various electrical components such as an electric reclining device and a seat heater, and a wire harness is routed from the vehicle body floor side to the seat side to supply power to these electrical components. In the case of a slide sheet, the wire harness is provided with an extra length so that it can follow the slide operation of the sheet.

  Conventionally, when a wire harness is routed between a vehicle body floor and a slide seat, for example, as disclosed in Japanese Patent Application Laid-Open No. 2006-205872 (Patent Document 1), a lower surface of a slide seat (not shown) is provided. A harness slide rail 3 for routing the wire harness W / H is provided on the vehicle body floor 4 in parallel with the seat rail 2 for slidably holding the seat leg 1 to be attached. The harness slide rail 3, the wire harness W / H is made to follow the sliding movement of the slide sheet by providing a surplus length absorption structure that allows the wire harness W / H to slide while being bent into a U shape (see FIG. 4).

JP 2006-205872 A

  However, in the routing structure as described above, the harness slide rail 3 having the same weight as the seat rail 2 must be provided on the vehicle body floor 4, which increases the cost and the vehicle weight, thereby improving the fuel consumption. There is also a risk of hindrance. In addition, three rails for one slide seat, that is, a pair of left and right seat rails 2 and one harness slide rail 3 are provided on the vehicle body floor 4, and there is a problem that it does not look good. .

  This invention makes it a subject that a wire harness can be routed between a vehicle body floor and a slide seat, without newly providing the slide rail for harness for routing a wire harness.

In order to solve the above-described problems, the present invention provides a wiring structure for a wire harness for a slide seat that is provided with an extra length between a fixed position on the vehicle body floor side and a fixed position on the slide seat side. Because
The seat rail provided on the vehicle body floor has a rectangular cross section in which the upper surface is closed on both sides of the upper surface opening space formed continuously in the length direction and the wheel of the seat leg portion of the slide seat is rotatably fitted. While providing a wheel passage space continuously in the length direction of the seat rail,
A surplus length absorbing portion that absorbs and accommodates the surplus length portion of the wire harness is provided in front of the seat rail, and the vehicle body connection side of the wire harness is fixed to the surplus length absorbing portion or the body floor, and the surplus length The wire harness in which the extra length portion is absorbed by the absorption portion is slidably inserted into one wheel passage space of the seat rail, and the seat connection side of the wire harness is opened on the upper surface in front of the wheel of the seat leg portion. Provided is a wiring structure for a wire harness for a slide seat that is drawn out into a space and fixed to the front end of the seat leg.

In the present invention, the surplus length absorbing portion that has conventionally been provided on the harness slide rail on the side of the seat rail is provided in front of the seat rail, and the vehicle body connection side of the wire harness is fixed to the surplus length absorbing portion or the vehicle body floor. ing. Further, the wire harness in which the surplus length portion is absorbed by the surplus length absorbing portion is inserted into one wheel passage space of the seat rail, and the seat connection side of the wire harness is connected to the upper surface of the seat rail in front of the wheel of the seat leg portion. It is pulled out into the opening space and fixed to the front end of the seat leg.
Therefore, since the wire harness can slide in the wheel passage space of the seat rail while bending the surplus portion at the surplus length absorbing portion provided in front of the seat rail, a conventional harness slide rail is newly provided on the vehicle floor. Even without this, the wire harness can smoothly follow the sliding movement of the seat leg. Therefore, the harness slide rail is not required, and the increase in cost and weight is suppressed, and the number of rails provided on the vehicle body floor is reduced, so that the appearance can be improved.

  In particular, since the wheel passage space has a rectangular cross-section with the upper surface closed, the wire harness to be inserted is surrounded by the wall surface of the wheel passage space. Therefore, the wire harness can be prevented from jumping out of the seat rail when the slide seat is operated, and the wire harness can be securely protected.

  In addition, by pulling out the seat connection side of the wire harness inserted into the wheel passage space to the adjacent upper surface opening space in front of the wheel of the seat leg portion, the seat connection side of the wire harness is stabilized at the front end of the seat leg portion. Can be retained. Therefore, the sheet connection side of the wire harness can be easily connector-connected to the electrical components in the sheet.

  A protector that partially covers the wire harness that is inserted into the wheel passage space is fixed to the front end of the seat leg portion, and the protector is slidably inserted into the wheel passage space. A cross-section of a J-shape that pulls out the seat connection side of the wire harness inserted into the protector into the upper surface opening space through a communication portion provided on the lower side of the side wall separating the wheel passage space and the upper surface opening space of the seat rail. It is preferable that the lead-out portion protrudes.

  A wire harness that is pulled out from the wheel passage space to the upper surface opening space by fixing the protector with the lead-out portion protruding to the front end of the seat leg and inserting the protector into the wheel passage space so as to be slidable. Route regulation can be performed reliably. Therefore, it is possible to protect the wire harness by preventing excessive bending or the like accompanying drawing to the upper surface opening space, and to make the wire harness follow the movement of the seat leg portion more smoothly.

  The protector and the drawer part fixed to the front end of the seat leg part are preferably made of resin, and the length of the protector is preferably about the width (D) +40 mm of the wire harness that is juxtaposed in parallel and drawn out from the drawer part. . Moreover, it is preferable that the said drawer | drawing-out part is protrudingly provided from the side surface lower side of the said protector so that the communicating part provided in the lower side of the side wall which separates wheel passing space and upper surface opening space may be passed.

  It is preferable that the surplus length absorbing portion is provided continuously at the front end of the seat rail, for example, as a box having a space that can accommodate the surplus length portion of the wire harness. Moreover, it is preferable that the said extra length absorption part is made into the magnitude | size which can accommodate the extra length part of a wire harness by bending in U shape, for example.

  As described above, according to the present invention, the wire harness can slide in the wheel passage space of the seat rail while bending the surplus length portion at the surplus length absorbing portion provided in front of the seat rail. Even if it is not provided on the vehicle body floor, the wire harness can smoothly follow the sliding operation of the seat leg. Therefore, the harness slide rail is not required, and the increase in cost and weight is suppressed, and the number of rails provided on the vehicle body floor is reduced, so that the appearance can be improved.

  In addition, since the wire harness inserted into the wheel passage space is surrounded by the wall surface of the wheel passage space, the wire harness can be prevented from jumping out of the seat rail when the slide seat is operated. It can be protected from trampling.

  In addition, a protector having a predetermined length with a J-shaped lead-out portion protruding is fixed to the front end of the seat leg, and the protector is slidably inserted into the wheel passage space to open the top surface from the wheel passage space. The path regulation of the wire harness drawn out to the space can be reliably performed. Therefore, the wire harness can be protected by preventing excessive bending or the like accompanying the drawing to the upper surface opening space, and the wire harness can smoothly follow the movement of the seat leg portion.

It is a schematic perspective view which shows the slide sheet in this embodiment. (A) is a principal part enlarged view which shows the protector fixed to the front end of a seat leg part, (B) is an AA sectional view, (C) is a BB sectional drawing. The wiring structure of a wire harness is shown, (A) is a schematic plan view when the slide seat is at the most rearward position, and (B) is a schematic plan view when the slide seat is at the most forward position. It is a figure which shows a prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an embodiment of the present invention. In the present embodiment, a wire harness W / H is routed between the vehicle body floor 20 and the slide seat 10 in order to supply power to electrical components (not shown) in the slide seat 10. A pair of left and right seat legs 11 as shown in FIG. 2 are provided on the lower surface of the slide seat 10, and each seat leg 11 is slidably attached to a seat rail 22 provided in a recess 21 of the vehicle body floor 20.

  The seat rail 22 includes a pair of wheel passage spaces 22a that are continuous in the length direction and an upper surface opening space 22b that is positioned between the pair of wheel passage spaces 22a. The wheel passage space 22a has a rectangular cross section with the upper surface closed. Further, an open communication portion 22d that connects the wheel passage space 22a and the upper surface opening space 22b is provided below the side wall 22c that separates the wheel passage space 22a and the upper surface opening space 22b.

  The seat leg portion 11 has a U-shaped arm portion 11b extending from the shaft portion 11a to the left and right, and supports the wheels 11c on the outer surfaces of the left and right arm portions 11b. The shaft portion 11a of the seat leg portion 11 is inserted into the upper surface opening space 22b of the seat rail 22, and the arm portion 11b is passed through the communication portion 22d so that the wheel 11c is rotatably fitted in the wheel passage space 22a. Yes. Thereby, the seat leg portion 11 is slidable on the seat rail 22. On the other hand, the vehicle body floor 20 is covered with a floor carpet 20a, and a cover member 23 covers a gap between the floor carpet 20a covering the edge of the recess 21 and the seat rail 22.

  Further, as shown in FIGS. 1 and 3, a surplus length absorption box 24 that is a surplus length absorbing portion is continuously provided at the front end of the seat rail 22. In this embodiment, the vehicle body connection side of the wire harness W / H is fixed to the vehicle body floor 20 near the service port 25 of the extra length absorption box 24 by the clamp 27, and the distal end side of the fixed wire harness W / H is instrument panel. The connector is connected to the internal electrical components (not shown). In the surplus length absorption box 24, the surplus length portion of the wire harness W / H drawn from the lead-in port 25 is bent and accommodated in a U shape, and the surplus length absorption box 24 follows the sliding motion of the seat leg portion 11. The extra length part is taken in and out from the entrance 26. In the present embodiment, the wire harness W / H drawn from the entrance 26 is inserted into one wheel passage space 22 a of the seat rail 22. The upper surface of the extra length absorption box 24 is also covered with the floor carpet 20a so that it cannot be seen from the outside (vehicle interior).

  As shown in FIG. 2, a resin protector 12 that partially covers the wire harness W / H inserted through the wheel passage space 22a is fixed to the front end of the seat leg portion 11, and the protector 12 passes through the wheel. The space 22a is slidably inserted. On the lower side of the rear side of the protector 12, a lead-out portion 13 having a J-shaped cross section is provided so as to project the sheet connection side of the wire harness W / H inserted through the protector 12 through the communication portion 22d into the upper surface opening space 22b. The length of the protector 12 is set to about the width (D) +40 mm of the wire harness W / H drawn in parallel with the flat and drawn out from the lead-out portion 13. The protector 12 can be fixed to the front end of the seat leg portion 11 by, for example, locking the locking portion 14 protruding from the rear outer surface of the protector 12 to the front outer surface of the arm portion 11b. The front end side of the wire harness W / H drawn to the upper surface opening space 22b through the protector 12 and the lead-out portion 13 is connected to an electrical component (not shown) in the slide sheet 10 through a connector.

Next, the movement of the wire harness W / H that follows the sliding operation of the slide sheet 10 will be described.
FIG. 3A shows a case where the slide seat 10 is at the most rear position, and FIG. 3B shows a case where the slide seat 10 is at the most front position. When the seat leg 11 of the slide seat 10 is slid from the front to the rear, the wire harness W / H housed in the extra length absorption box 24 is pulled out from the entrance 26 and the wheel passage space 22a of the seat rail 22 is extracted. The U-shaped bent portion of the wire harness W / H in the surplus length absorption box 24 moves to the rear side of the surplus length absorption box 24. On the other hand, when the seat leg 11 of the slide seat 10 is slid from the rear to the front, the U-shaped bent portion in the surplus length absorption box 24 moves to the front side of the surplus length absorption box 24 and the seat rail 22. The wire harness W / H inserted into the wheel passage space 22a is drawn into the surplus length absorption box 24 from the entrance 26 and accommodated as a surplus length portion.

  As described above, in this embodiment, the surplus length absorption box 24 is provided in front of the seat rail 22, and the vehicle body connection side of the wire harness W / H is fixed to the vehicle body floor 20 in the vicinity of the service port 25 of the surplus length absorption box 24. is doing. Further, the surplus length portion is absorbed by the surplus length absorption box 24 and the wire harness W / H drawn from the entrance / exit 26 of the surplus length absorption box 24 is inserted into the wheel passage space 22a of the seat rail 22, and the wheel of the seat leg portion 11 is inserted. The seat connection side of the wire harness W / H is pulled out to the upper surface opening space 22b in front of 11c and fixed to the front end of the seat leg portion 11.

  Therefore, since the wire harness W / H can slide the wheel passage space 22a of the seat rail 22 while bending the surplus length portion with the surplus length absorption box 24 provided in front of the seat rail 22, the harness slide rail is newly added to the vehicle body. Even if it is not provided on the floor 20, the wire harness W / H can smoothly follow the sliding motion of the seat leg portion 11. Therefore, the harness slide rail is unnecessary, and the increase in cost and weight is suppressed, and the number of rails provided on the vehicle body floor 20 is reduced, so that the appearance can be improved.

  In particular, since the wheel passage space 22a has a rectangular cross section with the upper surface closed, the wire harness W / H to be inserted is surrounded by the wall surface of the wheel passage space 22a. Therefore, the wire harness W / H can be prevented from jumping out of the seat rail 22 when the slide seat 10 is operated, and the wire harness W / H can be protected from being stepped on.

  A protector 12 having a predetermined length from which a J-shaped drawer 13 is projected is fixed to the front end of the seat leg 11, and the protector 12 is slidably inserted into the wheel passage space 22a. The path regulation of the wire harness W / H drawn from the passage space 22a to the upper surface opening space 22b can be reliably performed. Therefore, it is possible to protect the wire harness W / H by preventing excessive bending or the like accompanying drawing to the upper surface opening space 22b, and to make the wire harness W / H follow the movement of the seat leg portion 11 more smoothly. .

DESCRIPTION OF SYMBOLS 10 Slide seat 11 Seat leg part 12 Protector 13 Pull-out part 20 Car body floor 22 Seat rail 22a Wheel passage space 22b Upper surface opening space 22c Side wall 22d Communication part 24 Extra length absorption box

Claims (2)

A wiring harness wiring structure for a slide seat that is wired with an extra length between a fixed position on the vehicle body floor side and a fixed position on the slide seat side,
The seat rail provided on the vehicle body floor has a rectangular cross section in which the upper surface is closed on both sides of the upper surface opening space formed continuously in the length direction and the wheel of the seat leg portion of the slide seat is rotatably fitted. While providing a wheel passage space continuously in the length direction of the seat rail,
A surplus length absorbing portion that absorbs and accommodates the surplus length portion of the wire harness is provided in front of the seat rail, and the vehicle body connection side of the wire harness is fixed to the surplus length absorbing portion or the body floor, and the surplus length The wire harness in which the extra length portion is absorbed by the absorption portion is slidably inserted into one wheel passage space of the seat rail, and the seat connection side of the wire harness is opened on the upper surface in front of the wheel of the seat leg portion. A wiring structure of a wire harness for a slide seat that is pulled out to a space and fixed to a front end of the seat leg portion.   A protector that partially covers the wire harness that is inserted into the wheel passage space is fixed to the front end of the seat leg portion, and the protector is slidably inserted into the wheel passage space. A cross-section of a J-shape that pulls out the seat connection side of the wire harness inserted into the protector into the upper surface opening space through a communication portion provided on the lower side of the side wall separating the wheel passage space and the upper surface opening space of the seat rail. The wiring structure of the wire harness for slide seats of Claim 1 which has provided the drawer | drawing-out part.

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