JP5423389B2 - Wire harness wiring structure for slide sheet - Google Patents

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. 5).

  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. .

JP 2006-205872 A

  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-mentioned problems, the present invention provides a wiring structure of 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. And
The seat leg of the slide seat is slidably attached to a seat rail provided on the vehicle body floor, and the seat connection side of the wire harness is sheathed with a resin braided tube at the front end of the seat leg. Fixed, and slidably insert the wire harness into the space in the seat rail,
With said secure the excess length absorbing box before the end of the seat rail, and sheathed with the braided tube to the excess length absorbing box accommodating wound spirally extra length portion of the wire harness without using the spring provides a routing structure of a wire harness for a sliding seat, characterized in that it provided a pull-out port for drawing out the wire harness to the vehicle floor to the excess length absorbing box.

As mentioned above, the seat connection side of the wire harness routed between the vehicle body floor and the slide seat is fixed to the front end of the seat leg portion of the slide seat, and the wire harness is slidably inserted into the space in the seat rail. In the present invention, the surplus length absorbing mechanism that has been provided on the side rail of the seat rail is fixed to the front end of the seat rail as a surplus length absorbing box in the present invention and is provided on the vehicle body floor together with the seat rail. Yes. Further, in the surplus length absorption box, the wire harness is covered with a rigid braided tube so that the surplus length portion is spirally wound and stored without using a spring or the like, and the wire harness is pulled out to the vehicle body floor. Is provided in the extra length absorption box.
Therefore, the without providing a conventional harness sliding rails as the new vehicle floor wire harness while the elongated portion in surplus length absorbing box provided on the seat rail before end is wound spirally in a seat rail Therefore, it is possible to smoothly follow the sliding motion of the seat leg portion. Therefore, the conventional harness slide rail is not required, and the increase in cost and weight can be suppressed, and the number of rails provided on the vehicle body floor is reduced, so that the appearance can be improved.
Moreover, since the surplus length absorption box has a configuration in which the surplus length portion of the wire harness is wound and accommodated in a spiral shape, the surplus length absorption box accommodates the wire harness W / H bent and accommodated in a U shape. It can be made smaller.

  The surplus length absorption box is provided with a wire harness outlet at the center of the spiral winding, and the wire harness drawn from the outlet is connected to the wall of the surplus length absorption box or the vehicle body floor on the side of the wire harness connected to the vehicle body. Is fixed.

    Specifically, for example, in the case of the seat advance position where the seat leg is positioned in front of the seat rail, the extra length of the wire harness is wound in a spiral shape with a large curvature radius in the extra length absorption box. It is rotated to absorb the extra length or the number of windings is increased and the extra length is absorbed. On the other hand, when the seat leg is in the seat retracted position where the seat leg slides rearward of the seat rail, the radius of curvature of the extra length of the wire harness that is wound and accommodated in the extra length absorption box is reduced or The number of windings is reduced, and a part of the extra length portion accommodated in the extra length absorption box is pulled out to the space in the seat rail.

Alternatively, a rotating disk is rotatably mounted in the surplus length absorption box, the wire harness is wound around the outer periphery of the rotating disk in a spiral state, and the wire harness outlet is passed through the center of the rotating disk. The wire harness that is provided and drawn to the outer end of the wire harness that is wound around the outer periphery, is drawn out to the outlet, and is drawn out from the outlet to the outlet provided in the surplus length absorption box. May be clipped.
In this case, the wire harness that moves according to the forward / backward movement of the slide sheet can be wound around the outer periphery of the rotating disk, or can be pulled out of the wound state to follow the movement of the slide sheet.

As described above, the extra length absorption box is fixed to the front end of the sheet. It is preferable that the vehicle body connection side of the wire harness is fixed to the extra length absorption box.

  As described above, the wire harness that is inserted into the space in the seat rail by continuously providing the surplus length absorption box that winds and accommodates the surplus portion of the wire harness in a spiral shape at the front end of the seat rail. Can be absorbed smoothly. Further, the vicinity of the center of the spiral winding part is fixed by fixing the body connection side of the wire harness to the surplus length absorption box, specifically, the wall of the surplus length absorption box surrounding the outlet. In other words, even if the position of the seat leg portion is changed, the spiral shape of the spiral winding portion is easily maintained.

As described above, it is exterior wire harness in resin braided tube.
When the wire harness sheathed with the resin braided tube as described above is wound and accommodated in a surplus length absorption box in a spiral shape, the surplus portion is accommodated again even after the accommodated surplus length portion is drawn into the space in the seat rail. When accommodated in the long absorption box, the surplus portion is naturally wound in a spiral shape (self-winding) due to the rigidity and reaction force of the braided tube. With this self-winding function, it is possible to smoothly wind the surplus length portion in a spiral shape and absorb the surplus length without requiring an auxiliary part such as a spring. Examples of the resin for the braided tube include nylon resin and polyester resin.

  The seat rail space in which the wire harness slides is formed in the lengthwise direction in the center of the seat rail and the upper surface is open or parallel to both sides of the space, and the upper surface is closed by the upper surface of the seat rail. Any of the spaces made may be used.

  In particular, since the space formed in the length direction in the center of the seat rail is wide and the upper surface is open, it is easy to insert the wire harness, and the wire harness on the seat connection side is fixed to the front end of the seat leg. This is preferable because it can be easily pulled into the slide sheet. In this case, although the upper surface of the space through which the wire harness is inserted is opened, the wire harness can be protected from being stepped on by covering it with the resin braided tube as described above. On the other hand, since the upper surface of the space formed on both sides of the space is closed, the wire harness that slides in the space does not jump out from the upper surface side when the slide seat is operated, and is reliably protected from stepping on the wire harness. There is an advantage that you can.

As described above, according to the present invention, the seat connection side of the wire harness routed between the vehicle body floor and the slide seat is fixed to the front end of the seat leg portion of the slide seat and is covered with a resin braided tube. The wire harness is slidably inserted into the space in the seat rail, and the surplus length absorbing mechanism conventionally provided in the harness slide rail on the side of the seat rail is used as a surplus length absorbing box in the present invention. It is provided to the front end. In the surplus length absorption box, the surplus length portion of the wire harness is spirally wound and accommodated, and then the wire harness is pulled out to the vehicle body floor side. Therefore, even if a new harness slide rail is not provided on the vehicle body floor as in the prior art, the wire harness is wound inside the seat rail while the extra length is spirally wound by the extra length absorption box provided in front of the seat rail. Since the space can be slid, the sliding motion of the seat leg can be smoothly followed. Therefore, the conventional harness slide rail is not required, and the increase in cost and weight can be suppressed, and the number of rails provided on the vehicle body floor is reduced, so that the appearance can be improved.

  Further, since the surplus length absorption box has a configuration in which the surplus portion of the wire harness is wound and accommodated in a spiral shape, the surplus length absorption box accommodates the wire harness W / H bent and accommodated in a U shape. It can be made smaller than the part.

Further, since the wire harness sheathed with the resin braided tube is wound and accommodated in the extra length absorption box in a spiral shape, the extra length portion is accommodated again after being drawn out into the space in the seat rail. When accommodated in the surplus length absorption box, the surplus length portion is naturally wound in a spiral shape (self-winding) by the rigidity and reaction force of the braided tube. With this self-winding function, it is possible to smoothly wind the surplus length portion in a spiral shape and absorb the surplus length without requiring an auxiliary part such as a spring. Moreover, damage to the wire harness can be prevented by sheathing the wire harness with a resin braided tube.

It is a schematic perspective view which shows the slide sheet in 1st embodiment of this invention. (A) is a principal part enlarged view which shows the state which has fixed the sheet | seat connection side of the wire harness to the front end of a seat leg part, (B) is II sectional view taken on the line. The wiring harness wiring structure is shown, (A) is a schematic plan view when the slide seat is at the foremost position, (B) is a cross-sectional view taken along the line II-II, and (C) is the position at which the slide seat is the most rearward. (D) is a III-III sectional view taken on the line. A second embodiment is shown, (A) is a sectional view of an essential part, (B) is a schematic plan view showing a winding state of a wire harness when the slide seat is advanced, and (C) is a wire harness when the slide seat is moved backward. It is a schematic plan view which shows a winding state. 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 a first embodiment of the present invention.
A wire harness W / H (hereinafter referred to as a braided tube exterior) sheathed with a braided tube 30 made of nylon resin between the vehicle body floor 20 and the slide sheet 10 to supply power to electrical components (not shown) in the slide sheet 10. Wiring harness W / H). 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 leg portion 11 is provided with a pair of left and right wheels 11a, and the seat leg portion 11 is slidable by fitting each wheel 11a to a pair of left and right rail portions 22a formed on the seat rail 22, respectively. 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.

  The sheet connection side of the braided tube exterior wire harness W / H is fixed to the front end of one seat leg 11 with a clamp 12, and after fixing, the front end side of the wire harness W / H drawn from the end of the braided tube 30 is placed on the slide sheet 10. The connector is connected to the electrical components inside. Further, the other end side of the braided tube exterior wire harness W / H in which the seat connection side is fixed to the front end of the seat leg portion 11 is slidable in the space 22A in the seat rail 22 to which the seat leg portion 11 is attached. It is inserted. Here, the space 22A in the seat rail 22 is a central space sandwiched between the pair of left and right rail portions 22a, and the space is formed in the length direction and the upper surface is open.

  An extra length absorption box 24 is continuously provided at the front end of the seat rail 22 through which the braided tube exterior wire harness W / H is inserted. In the present embodiment, the surplus length absorption box 24 has a square shape in plan view as shown in FIGS. 1 and 3, and the surplus length absorption box 24 is inserted into the space 22 </ b> A in the seat rail 22. The extra length absorption space for accommodating the extra length portion in a spiral shape. The surplus length portion of the braided tube exterior wire harness W / H forms a spiral winding portion 31 that is spirally wound from the outside to the inside in the surplus length absorption box 24 and accommodated.

  On the side surface of the surplus length absorption box 24 on the seat rail 22 side, there is provided an inlet / outlet 26 that allows the surplus length portion to be taken in and out following the sliding motion of the seat leg 11, and the center of the bottom wall of the surplus length absorption box 24 Is provided with an outlet 27 for drawing the braided tube exterior wire harness W / H on the vehicle body connection side, that is, the center side C of the spiral winding portion 31 to the vehicle body floor 20. In this embodiment, before pulling out from the outlet 27, the vehicle body connection side is fixed by the clamp 28 at a position surrounding the outlet 27 on the inner surface of the bottom wall of the extra length absorption box 24. The vehicle body connection side may be fixed to the vehicle body floor 20. The vehicle body connection side of the braided tube exterior wire harness W / H drawn out from the outlet 27 to the vehicle body floor 20 is routed in the direction of the instrument panel, and the front end side of the wire harness W / H drawn out from the end of the braided tube 30 is electrically mounted. The product (not shown) is connected to the connector. 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).

Next, the movement of the wire harness W / H that follows the sliding operation of the slide sheet 10 will be described.
3A and 3B show the case where the slide seat 10 is at the most forward position, and FIGS. 3C and 3D show the case where the slide seat 10 is at the most rear position.

  When the seat leg 11 of the slide sheet 10 is slid from the front to the rear, as shown in FIGS. 3C and 3D, the braided tube exterior wire harness W housed in the extra length absorption box 24 is obtained. / H is pulled out from the entrance 26 and inserted into the space 22A in the seat rail 22, and the radius of curvature of the spiral winding portion 31 in the extra length absorption box 24 is reduced. On the other hand, when the seat leg 11 of the slide seat 10 is slid from the rear to the front, as shown in FIGS. 3A and 3B, the braided tube exterior wire inserted through the space 22A in the seat rail 22 The harness W / H is drawn into the surplus length absorption box 24 from the entrance 26 and the curvature radius of the spiral winding portion 31 in the surplus length absorption box 24 is increased.

  As described above, the sheet connection side of the braided tube exterior wire harness W / H arranged between the vehicle body floor 20 and the slide sheet 10 is fixed to the front end of the seat leg 11 of the slide sheet 10, and the braided tube exterior wire The harness W / H is slidably inserted into the space 22A in the seat rail 22. In addition, a surplus length absorption box 24 that accommodates the surplus length portion of the braided tube exterior wire harness W / H in a spiral shape is provided continuously at the front end of the seat rail 22, and the surplus length absorption box 24 extends from the vehicle body floor 20. Is provided with an outlet 27 for pulling out the braided tube outer wire harness W / H, and the body connection side of the braided tube outer wire harness W / H is fixed to the inner surface of the bottom wall of the surplus length absorption box 24 surrounding the outlet 27. .

  Therefore, the braided tube sheathed wire harness W / H is formed in the extra length absorption box 24 provided at the front end of the seat rail 22 in a spiral shape without newly providing a harness slide rail on the vehicle body floor. The space 22A in the seat rail 22 can be slid while being wound, and the sliding motion of the seat leg portion 11 can be smoothly followed. Therefore, the conventional harness slide rail is not required, and the increase in cost and weight can be suppressed, and the number of rails provided on the vehicle body floor is reduced, so that the appearance can be improved.

  Moreover, since the surplus length absorption box 24 has a configuration in which the surplus length portion of the braided tube sheathed wire harness W / H is wound and accommodated in a spiral shape, the wire harness W / H is bent into a U shape and accommodated. Therefore, it can be made smaller than the conventional extra length absorbing portion.

  Furthermore, when the wire harness W / H sheathed with the resin braided tube 30 is wound around the surplus length absorption box 24 in a spiral shape and accommodated, the accommodated surplus length portion is pulled out to the space 22A in the seat rail 22. After that, when it is accommodated again in the surplus length absorption box 24, the surplus length portion is naturally wound in a spiral shape (self-winding) by the rigidity and reaction force of the braided tube 30. With this self-winding function, it is possible to smoothly wind the surplus length portion in a spiral shape and absorb the surplus length without requiring an auxiliary part such as a spring. Moreover, damage to the wire harness W / H can be prevented by covering the wire harness W / H with the resin braided tube 30.

FIG. 4 shows a second embodiment.
In the second embodiment, an annular protrusion 50 a is provided on the bottom surface of the rotating disk 50 in the surplus length absorption box 24, and an annular guide recess 52 is provided on the bottom wall of the surplus length absorption box 24. The protrusion 50a is rotatably fitted, and the rotary disk 50 is rotatably installed. A wire harness W / H is wound around the outer peripheral surface 50b of the rotating disk 50 as an arc, and a wire harness outlet 50c is provided through the center of the rotating disk 50. The inner end of the wire harness wound around the outer peripheral surface 50b is drawn into the outlet 50c, and is drawn to the floor side from the wire harness outlet 54 provided on the bottom wall of the surplus length absorption box 24 in communication with the outlet 50c. The wire harness is fixed to the floor with a clamp.

  When the slide sheet advances, the wire harness W / H absorbs the extra length of the wire harness by increasing the number of turns wound around the outer circumference of the rotating disk 50 as shown in FIG. 4B. On the other hand, when the slide seat is moved backward, as shown in FIG. 4C, the rotating disk 50 rotates in accordance with the wire harness being pulled out, and the winding of the wire harness wound around the outer periphery of the rotating disk 50 is reduced. To do.

Other configurations and operational effects are the same as those of the first embodiment, and thus description thereof is omitted.
In addition, this invention is not limited to the said embodiment, A various form is included in the range which does not exceed the summary of this invention.

DESCRIPTION OF SYMBOLS 10 Slide seat 11 Seat leg part 20 Vehicle body floor 22 Seat rail 24 Extra length absorption box 30 Plastic braided tube 50 Rotating disc W / H Wire harness

Claims (4)

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 leg of the slide seat is slidably attached to a seat rail provided on the vehicle body floor, and the seat connection side of the wire harness is sheathed with a resin braided tube at the front end of the seat leg. Fixed, and slidably insert the wire harness into the space in the seat rail,
With said secure the excess length absorbing box before the end of the seat rails, for accommodating wound spirally extra length portion of the exterior and the wire harness without using a spring in the braided tube 該余length absorbing box, arranging structure of a wire harness for a sliding seat, characterized in that it provided a pull-out port for drawing out the wire harness to the vehicle floor to the excess length absorbing box. The surplus length absorption box is provided with an outlet for drawing the wire harness to the vehicle body floor at the center portion wound in the spiral shape, and the wire harness drawn from the outlet is connected to the wall of the extra length absorption box or the vehicle body floor. The wiring structure of the wire harness for slide seats of Claim 1 currently fixed to . A rotating disk is rotatably mounted in the extra length absorption box, the wire harness is wound around the outer periphery of the rotating disk in a spiral shape, and a wire is provided at an outlet provided through the center of the rotating disk. The wire harness is fixed to the extra length absorption box with a clip at a peripheral edge of the draw outlet through the harness and pulled out to an outlet provided in the extra length absorption box . Wire harness wiring structure for slide sheets.   The space of the seat rail through which the wire harness is inserted is formed in the longitudinal direction in the center of the seat rail, and the upper surface of the seat rail is formed parallel to both sides of the space having the upper surface opened or the space. The wiring structure of the wire harness for slide sheets according to any one of claims 1 to 3, wherein the wiring harness is a closed space.

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