JP2014121930A - Wire harness wiring device for slide sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently prepare a wiring space for a wire harness connecting to a slide seat.SOLUTION: A wire harness wiring device includes: one linear harness rail 7 arranged along from a side surface front end to the rear side of a seat rail for a slide seat; an excess length storage case 8 which, following the front end of the harness rail, is arranged in front of the seat rail; and a slider 9 which is connected to the slide seat and is fitted in the harness rail as movable. A wire harness to be wired for the slide seat is inserted into the harness rail through the slider, is inserted from the harness rail into the excess length storage case 8 as J-shaped, and, after being bent once, is drawn outside from an opening prepared at the rear end of the excess length storage case.

Description

  The present invention relates to a wire harness wiring device for a slide sheet, and is particularly suitable for a long slide of 400 mm or more.

  A vehicle seat is equipped with various electrical components such as an electric reclining device and a seat heater. In order to supply power to these electrical components, a power supply wire harness is routed from the vehicle body floor to the seat. In the case of a slide sheet, it is necessary to cause the wire harness to follow the sliding motion of the sheet. For this reason, the wire harness is provided with an extra length portion. The slide size of an automobile slide seat is usually about 240 mm to 300 mm at maximum, but a long slide seat with a maximum slide size of about 400 mm to 1200 mm in the passenger seat or the rear seat, etc., and a large space in front of the seat or behind the seat is provided. Recently, a car that can do this has been provided. In such a long slide seat, the length of the extra length portion of the wire harness becomes large, so that the rail portion that allows the wire harness to be smoothly inserted and removed from the extra length accommodation portion to be moved back and forth of the slide seat. Is required.

  As a harness routing device for routing between this type of vehicle body floor and a long slide seat, the present applicant proposes a device shown in FIGS. 13 and 14 in Japanese Patent Laid-Open No. 2011-162134 (Patent Document 1). doing. In the apparatus, the seat wire harness W / H is inserted into the space 101a in the seat rail 101 in which the wheels of the slide seat 100 are movably fitted, the seat rail 101 is used as the wire harness rail, and A wire harness surplus length storage case 105 is disposed at the front end of the seat rail 101, and the wire harness W / H is pulled out into the surplus length storage case 105 by U-turning and connected to the floor harness 200.

  Further, in the apparatus described in Japanese Patent Laid-Open No. 2010-193599 (Patent Document 2), the wire harness rail is provided separately from the seat rail. That is, as shown in FIGS. 15A and 15B and FIGS. 16A and 16B, the wire harness rail 102 is laid on the floor in parallel and adjacent to the side of the seat rail 101 for the slide seat 100. In addition, an extra wire length accommodating case 110 is installed in parallel and adjacent to the side of the wire harness rail 102, and a separate wire harness for the side of the seat rail 101, which is a moving area of the slide seat 100. The rail 102 and the extra wire length accommodation case 110 are arranged in parallel. The wire harness W / H wired to the slide sheet 100 is branched from the floor harness and inserted into the extra wire length accommodation case 110 in a state of being covered with a corrugated tube. The slide 102 is wired through the slider 103 that moves in conjunction with the slide sheet 100 in the rail 102.

  In the apparatus in which the wire harness rail 102 and the wire surplus length accommodating case 110 described in Patent Document 2 are arranged in parallel, the wire harness W / H is the front end of the wire harness rail 102 and the wire surplus length accommodating case 110. The wire is inserted into the extra wire length accommodation case 110 through the first bend X1 on the side, bypassed in a U shape within the extra wire length accommodation case 110, and the second bend X2 is made at the rear end portion in the case. Bends X1 and X2 are required.

JP 2011-162134 A JP 2010-193599 A

  In the device of Patent Document 1, since the seat rail is used as the wire harness rail, there is an advantage that the wire harness rail can be eliminated, but it takes time to insert the wire harness into the seat rail, and In addition, there is a risk that the wire harness may be contaminated with the grease for lubrication filled in the seat rail, and the movement of the wire harness in the seat rail may be hindered by dust that enters and accumulates in the seat rail. There is room for improvement.

  In the device of Patent Document 2, since the wire harness rail and the wire extra length accommodation case are arranged in parallel on the side adjacent to the seat rail, a space is provided on the side of the seat rail, and piping is provided on the side of the seat rail. There is a problem that it easily interferes with the air duct. Furthermore, the wire harness needs to be bent twice because the wire harness is bent once between the wire harness rail and the wire excess length accommodation case, and then the wire harness is bent a second time in the wire excess length accommodation case. It becomes. Since these two bends are made every time the slide sheet moves, there is a problem that aged fatigue tends to accumulate in the wire harness.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and while providing a wire harness rail in addition to a seat rail, it does not become a large-sized device, reduces installation space and eliminates interference with other members, and wire harness The problem is to increase the durability of the wire harness by bending the surplus portion of the wire only once.

In order to solve the above problems, the present invention provides:
One linear harness rail arranged rearward from the front end of the side surface of the seat rail for the slide seat;
A surplus length accommodation case that is arranged in front of the seat rail in a continuous manner with the front end of the harness rail,
A slider coupled to a slide sheet and movably fitted in the harness rail;
With
A wire harness to be wired to the slide sheet is inserted into the harness rail through the slider, and is inserted into the extra-length accommodating case from the harness rail into the extra-length accommodating case, and then provided at the rear end of the extra-length accommodating case. There is provided a wire harness routing device for a slide seat characterized by being drawn outward from an opening.

  In the wire harness routing device of the present invention, only the harness rail is installed along the side surface of the seat rail, and the extra length accommodation case is continuously arranged at the front end of the harness rail. Therefore, it is possible to prevent interference with existing members arranged on the side of the seat rail without taking up installation space. The extra length accommodation case is installed under the floor (lower part of the molding) in front of the slide seat. However, since there is usually no existing arrangement material at the location, the extra length accommodation case can be arranged without interfering with the existing material. In particular, the long slide seat is adopted on the passenger seat side, and there is no existing arrangement material under the floor in front of the passenger seat side seat, so there is no problem even if the extra length accommodation case is arranged.

  In addition, the harness rail is installed to extend rearward from the front end along the side surface of the seat rail, and the extra length accommodation case is continuously arranged at the front end of the harness rail. The wire harness can be pulled into the case while being held in a straight line, bent at the front end side of the extra length accommodation case, turned backward, and pulled out from the opening provided at the rear end of the extra length accommodation case . Thus, the wire harness inserted from the harness rail into the extra length accommodation case is routed in a J-shape, and the bending of the wire harness is only at the front end side in the extra length accommodation case. As a result, the bending fatigue applied to the wire harness can be halved as compared with the case where the wire harness described in Patent Document 2 is bent twice before and after the wire excess length accommodation case. Furthermore, since the wire harness is not routed in a U shape within the extra length accommodation case, the width of the extra length accommodation case can be reduced by a dimension corresponding to the width of the wire harness, and the extra length accommodation case can be reduced in size. it can.

  The harness rail and the extra length accommodation case are integrally formed, or as a separate body, the harness insertion opening at the front end of the harness rail and the harness insertion opening of the extra length accommodation case are made continuous.

If the harness rail and the extra length accommodation case are integrally formed of resin, the cost can be reduced by reducing the number of parts, and the number of installation work on the vehicle can be reduced.
On the other hand, if the harness rail and the extra length accommodation case are separated, the harness rail molding resin can be made more rigid than the extra length accommodation case molding resin, and is formed using a resin material suitable for the application. be able to. And the harness rail installation position is fixed at a position along the side of the seat rail, but the extra length storage case can be installed in any posture according to the installation location such as horizontal posture, vertical posture, inclined posture, etc. it can.

  The length (L1) of the extra length housing case may be about 1/2 of the extra length of the wire harness when the slide seat is at the front end position, and about 1 / of the maximum slide length of the slide seat. 2 in length.

  The length (L2) of the harness rail may be the same as the total length of the seat rail, but it is preferable to set the length from the front end of the seat rail to a point of 40 to 80% of the total length without providing the full length. .

The length (L1) of the extra length accommodation case is in the range of 60% to 20% of the length (L2) of the harness rail, and
The length (WL1) of the wire harness accommodated in the harness rail and the length (WL2) of the wire harness accommodated in the extra length accommodation case at the rearmost position of the slide sheet are WL1: WL2 = 1: 4 to 1:12
When the slide seat is in the foremost end position, it is preferable that the surplus length of the wire harness is not in the harness rail but is accommodated in the surplus length accommodation case.
In the present invention, no matter how the distribution of the length (L1) of the extra length accommodation case and the length (L2) of the harness rail is set, the entire extra length accommodation case is arranged forward from the front end of the seat rail. In this way, there is no space for the side of the seat rail.

  The harness rail includes a harness insertion portion having a box-shaped cross section that extends along the outer surface of the side wall of the seat rail, and a slider sliding portion that protrudes from one side of the upper surface of the harness insertion portion. The slider sliding portion has an upper surface opening in a molding that serves as a vehicle compartment floor material, a slider that fits into the slider sliding portion protrudes from the opening, and the slider is a seat leg portion of the slide seat. The harness rail and the extra length accommodation case are arranged below the molding.

The extra-length housing case is composed of a substantially U-shaped main body having a relatively shallow bottom and a lid that is covered after the wire harness is housed in the main body.
Openings are provided on both sides of the rear end surface of the extra length accommodation case, one side opening is continued to the front end opening of the harness insertion portion of the harness rail, the wire harness is pulled out from the other side opening, Provide a central closing part recessed in an arc or concave in the center,
The front end surface is preferably arcuate or linear in the direction perpendicular to both side walls, and the wire harness inserted through the extra length accommodation case is preferably bent along the front end surface.

The wire harness entering / exiting the opening on both sides of the extra length accommodation case regulates the path in a linear direction between the both sides of the central closing portion and the inner surface of the outer peripheral wall of the case, and guides the wire harness along the outer peripheral surface of the case. doing. As this structure, the wire harness which detours from the harness rail inside the extra length accommodation case and draws it outward is U-turned at the front end of the extra length accommodation case, and is wired in a J shape as a whole.
In addition, even when the front end of the extra length storage case is not formed in an arc shape but is rectangular, it is a J-shaped cable to bend on the front end side of the extra length storage case that is linearly connected to the harness rail, Bending only at the front end of the extra-length housing case and bending it at the rear end side without bending it is equivalent to the case where the front end is an arc.

As described above, the box-shaped harness insertion portion and the extra length accommodation case of the harness rail that accommodates the wire harness are disposed in the space below the molding that serves as the vehicle compartment floor material and above the floor panel. The load from the inside is not directly received.
The molding is composed of a composite structure in which a floor carpet is laid on a body panel made of a rigid plate via a carpet base material such as an elastic mat. There is a space between the mall and the floor panel made of a metal plate on the lowermost surface of the vehicle, and the space is filled with vibration absorbing material, heat insulating material, sound insulating material, etc. The interior of the vehicle is absorbed and held in a comfortable space. The seat rail is fixedly laid on the upper surface of a support member mounted on the upper surface of the floor panel, and a recess for slidably fitting a wheel of the slide seat is exposed in an opening provided in the molding. The harness rail has a box-shaped harness insertion portion accommodated in a space between the molding and the floor panel, and the upper surface opening of the slider sliding portion protruding from the upper surface of the harness insertion portion is the same as the concave surface of the seat rail. It is located on the surface.

  As described above, the extra length accommodation case that is continuous with the harness insertion portion of the harness rail is accommodated in the space between the molding and the floor panel. The extra length accommodation case accommodated in the space may be arranged in any of a horizontal posture, a vertical posture, or a downward inclined posture. Further, the extra length accommodation case may be bent in an arc shape in the width direction and arranged in a downward arc posture. If it arrange | positions with a vertical attitude | position, the load loaded from upper direction can be reduced, and if it arrange | positions with a downward inclination attitude | position, the assembly | attachment workability | operativity to the downward space of a molding material can be improved.

The harness insertion part of the harness rail and the wire harness housed in the extra length housing case have a caterpillar-type protector on the exterior,
The protector is formed in a cylindrical shape by bending a plurality of folding lines extending in the length direction on the belt-shaped flat plate and spaced in the width direction, and spaced in the length direction in the width direction. A notch is made to make one side continuous and the other side is separated, and the other side is bent and connected to the other side without bending.

The caterpillar type protector is a caterpillar type that is bent on one side but not on the other side as described above by cutting a main body such as a square tube with a space in the length direction.
The square cylindrical caterpillar type protector is provided with four folding lines extending in the length direction on a belt-like flat plate at intervals in the middle portion in the width direction, and on both side edges in the width direction. A locking projection is provided on one side and a locking hole for inserting and locking the locking projection is provided on the other side. The locking projection is bent along the folding line to form a square cylinder. Is inserted and locked into the locking hole to hold the rectangular tube shape, and further, the widthwise cut lines connecting the four bent lines are provided at intervals in the length direction to provide three sides of the rectangular tube. It is preferable to have a shape that is separated and can be bent.

  The cylindrical caterpillar type protector used as the exterior material of the wire harness has a contact rib projecting on one surface which is in sliding contact with the inner surface of the outer peripheral wall in the extra length housing case, and the contact rib is brought into line contact. The sliding resistance may be reduced. Furthermore, the contact resistance is reduced by making the caterpillar-shaped protector into a triangular cylinder and making the apex of the triangle line contact with the sliding contact surface, or by placing the arc surface on the sliding contact surface side as a semi-cylindrical contact. May be.

  The above-mentioned caterpillar type protectors such as a square tube shape, a triangular tube shape, and a semi-cylindrical shape can be formed by punching a flat plate that has been formed by extrusion, and then bending and assembling it. It can be formed at a lower cost than a tube, and is not bulky because it remains flat when transported. Moreover, since it is not a closed cylinder, it can be easily packaged on the wire harness.

  When the rectangular cylindrical caterpillar protector is externally mounted on a wire harness that is inserted through the harness insertion portion of the extra length accommodation case and the harness rail, the height of the extra length accommodation case corresponds to the height of the protector, and The insertion space of the cross section of the harness insertion portion of the harness rail is set to a size that is in sliding contact with the outer surface of the cross section of the protector, and the wire harness sheathed with the protector does not play and the harness insertion portion of the harness rail and the extra length accommodation The inside of the case can be slid.

  Further, the bottom wall of the harness insertion portion of the harness rail is stepped, the communicating portion side with the slider sliding portion is a lower step surface, the other side is an upper step surface, and the lower surface of the protector is on the upper step surface. A part may be slidably mounted, and the space between the lower surface of the protector and the lower step surface of the bottom wall may be a dust storage space. With this configuration, dust entering from the slider sliding portion on the upper surface opening is accumulated in the dust storage space, and it is possible to prevent the sliding of the wire harness covered with the protector from being hindered.

  The harness rail is disposed adjacent to the side surface of the seat rail, and the slider sliding portion of the harness rail is opened to the passenger compartment floor surface. Therefore, the molding constituting the passenger compartment floor surface sandwiches the slider sliding portion. It is necessary to lay on both sides. In the present invention, the slider sliding portion is disposed close to the seat rail, so that one side of the slider sliding portion is covered with the molding on the seat rail, and the molding is laid on one side opposite to the seat rail side. ing. As a result, the number of malls to be laid can be reduced, and the mall installation work can be reduced.

As described above, the wire harness routing device for a slide seat according to the present invention has only the harness rail installed along the side surface of the seat rail, and the extra length accommodation case is continuously arranged at the front end of the harness rail. Therefore, it does not take installation space to the side of the seat rail, and can prevent interference with existing members arranged on the side of the seat rail.
In addition, the harness rail is installed to extend rearward from the front end along the side surface of the seat rail, and the extra length accommodation case is continuously arranged at the front end of the harness rail. The wire harness can be pulled into the case while being held in a straight line, bent at the front end side of the extra length accommodation case, turned backward, and pulled out from the opening provided at the rear end of the extra length accommodation case. The wire harness that passes through the extra length housing case from the rail is routed in a J-shape, so it is only necessary to bend the wire harness once in the extra length housing case, compared to the case where the wire harness is bent twice. Thus, the bending fatigue loaded on the wire harness can be halved, and the width of the extra length accommodation case can be reduced to reduce the extra length accommodation case.

It is a schematic perspective view which shows the slide sheet in 1st Embodiment. It is the II-II sectional view taken on the line of the 1st embodiment. The positional relationship between the seat rail, the harness rail, and the extra length accommodation case and the movement of the wire harness are shown, (A) shows the state at the rear position of the slide seat, and (B) shows the state at the front position of the slide seat. (C) is comparative explanatory drawing of patent document 2 and this invention. (A) is a perspective view which shows the integral type of a harness rail and a surplus length accommodation case, (B) is a perspective view which shows a separate type | mold. (A) is sectional drawing of a harness rail, (B) is sectional drawing of the modification of a harness rail. The slider is shown, (A) is a perspective view, and (B) and (C) are sectional views. The protector exterior-equipped to a wire harness is shown, (A) is a perspective view, (B) is an expanded development view, (C) is principal part sectional drawing. It is drawing which shows the modification of a surplus length accommodation case. (A) (B) (C) is drawing which shows the modification of the protector armored to a wire harness. The 4th modification of a surplus length accommodation case is shown, (A) is sectional drawing which shows an installation state, (B) is a schematic perspective view. It is sectional drawing which shows the 5th modification of a surplus length accommodation case. It is sectional drawing which shows the 6th modification of a surplus length accommodation case. (A) (B) is drawing which shows a prior art example. It is a principal part perspective view of the said prior art example. Another example is shown, (A) is an overall perspective view, (B) is a cross-sectional view taken along line BB of (A). (A) (B) is an operation explanatory view of the other conventional example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 7 show a first embodiment of the present invention.
As shown in FIG. 1, a passenger seat side slide sheet 1 mounted on an automobile is a long slide sheet that can slide about 400 mm to 1200 mm, and power is supplied to electrical components (not shown) mounted on the slide sheet 1. The wire harness 5 is wired from the floor panel 2 to the slide sheet 1.

  As shown in FIG. 2, a pair of left and right seat legs 3 are provided on the lower surface of the slide seat 1, and each seat leg 3 is slid onto a pair of left and right seat rails 6 mounted on the floor panel 2 via a support base 50. It is attached freely. Each seat rail 6 has the structure shown in FIG. 2, and the shaft portion 3a of the seat leg portion 3 protruding downward from the seating surface of the slide seat 1 is inserted into the seat rail 6, and the arm portion 3b extends from the shaft portion 3a to the left and right. The wheel 3c pivotally supported on the outer surface of the arm portion 3b is rotatably fitted in the side space 6a in the seat rail 6. The upper walls 6f of the left and right side spaces 6a sandwiching the upper surface opening 6c at the center of the seat rail 6 are laid with moldings 10A and 10B serving as vehicle interior floor materials on the upper surface.

  On one side of the seat rail 6, one straight harness rail 7 is installed from the front end to the rear, and an extra-length housing case 8 is installed continuously to the front end of the harness rail 7, The surplus length storage case 8 is arranged in front of the front end of the seat rail 6. The wire harness 5 branched from the floor harness routed to the floor panel 2 is continuously wired to the extra length accommodation case 8 and the harness rail 7, and is passed through the slider 9 slidably fitted to the harness rail 7, The slider 9 is connected to the leg portion 3 of the slide sheet 1, and the wire harness 5 is wired in the slide sheet 1.

The harness rail 7 and the extra length accommodation case 8 are integrally formed as shown in FIGS. 3 and 4A. Since the harness rail 7 extends in a straight line and the U-shaped extra length accommodation case 8 is connected to the front end of the harness rail 7, the integrated harness rail 7 and the extra length accommodation case 8 are substantially omitted as a whole. J-shaped. Therefore, after the wire harness 5 wired to the slide sheet 1 is inserted into the harness rail 7 through the slider 9, the U-turn is made from the harness rail 7 in the extra length accommodation case 8, and is inserted into a J shape as a whole. Then, after being bent once in the extra length accommodation case 8, it is drawn outward from an opening provided at the rear end of the extra length accommodation case.
As shown in FIG. 4B, the harness rail 7 and the extra length accommodation case 8 are formed separately, and one side portion of the rear end of the extra length accommodation case 8 is brought into contact with the front end of the harness rail 7. May be connected.

The length (L1) of the extra length housing case 8 may be about ½ of the extra length of the wire harness 5 when the slide seat 1 is at the front end position. The length is about ½.
The length (L2) of the harness rail may be the same as the entire length of the seat rail 6, but is preferably provided at a length from the front end of the seat rail 6 to a point of 40 to 80% of the entire length without providing the entire length. .

  As shown in FIGS. 4 and 5A, the harness rail 7 includes a harness insertion portion 7a having a box-shaped cross section that extends along the outer surface of the side wall of the seat rail 6, and one side of the upper surface of the harness insertion portion 7a. From the slider sliding portion 7b projecting in communication with the opening, the locking portion 7c of the L-shaped molding 10B extending from the upper end of the outer wall of the slider sliding portion 7b, and the closed upper surface of the harness insertion portion 7a The shape is provided with a locking portion 7d of the protruding molding 10C. The upper surface opening 7h of the slider sliding portion 7b is exposed to the opening 10H between the moldings 10B and 10C. The molding laid on the upper surface of the harness rail 7 is arranged close to the seat rail 6 so that the seat rail side is covered with the molding 10B on the seat rail and only one side opposite to the seat rail 6 is covered with the molding 10C. ing. A locking portion 10C-a projecting downward from the molding 10C is inserted and locked to the locking portion 7d.

The extra length accommodation case 8 that is continuous with the front end of the harness insertion portion 7a of the harness rail 7 has a substantially U shape in which the front end is curved in an arcuate shape, and accommodates a relatively shallow main body 8a and a wire harness in the main body 8a. And a cover 8b to be put on. A central closing portion 8c that is recessed in an arc shape is provided at the center of the rear end surface of the extra length housing case 8, and openings 8d and 8e are provided on both sides of the central closing portion 8c. One opening 8d is connected to the front end opening of the harness insertion portion 7a of the harness rail 7, the wire harness 5 is pulled out from the other opening 8e and connected to the floor harness and connected to the floor harness at a position protruding outward. It is fixed to the floor panel via a clip.
In the extra length housing case 8, the wire harness 5 that enters and exits the openings 8d and 8e on both sides is regulated in a linear direction between both sides of the central closing portion 8c and the inner surface of the outer peripheral wall 8f of the case. 5 guides along the outer peripheral surface of the case. As this configuration, the wire harness 5 that detours from the harness rail 7 in the extra length accommodation case 8 and is pulled outward is U-turned at the front end of the extra length accommodation case 8, and includes the harness rail 7 as a whole in a J shape. Wiring to.

  In the harness rail 7, dust enters from the upper surface opening 7h of the slider sliding portion 7b and accumulates on the inner surface of the bottom wall of the harness insertion portion 7a, which may hinder the movement of the wire harness. It is good also as a structure to show. That is, a step is provided on the bottom wall 7g, and a lower step 7g1 is provided directly below the upper surface opening 7h, and an upper step 7g2 is provided on the opposite side. One side portion of the bottom surface of the square cylindrical caterpillar-type protector 30 shown in FIG. 7 that externally attaches the wire harness 5 to the upper step portion 7g2 is slidably mounted. A space sandwiched between 7g1 is defined as a dust storage portion 7m.

  As shown in FIG. 5, the slider 9 slidably fitted to the slider sliding part 7b of the harness rail 7 projects the slider 9 fitted to the slider sliding part 7b from the upper surface opening 7h. The slider 9 is made of a resin molded product, has a shape shown in FIGS. 6A to 6C, and has a rectangular frame-shaped wire harness insertion portion 9a slidably fitted to the slider sliding portion 7b at the outer end. Yes. A vertical frame portion 9b is provided on the inner side surface of the wire harness insertion portion 9a. An L-shaped lateral that is projected to the upper surface opening 6c side of the seat rail 6 continuously to the upper inner surface of the vertical frame portion 9b and then bent rearward so as to extend above the upper wall 6f with a gap. A frame portion 9c is provided. An opening 9d for pulling out the wire harness is provided on the upper surface on the protruding side of the horizontal frame portion 9c. The hollows of the vertical frame portion 9b and the horizontal frame portion 9c serve as an insertion passage for the wire harness 5 drawn from the wire harness insertion portion 9a, and the wire harness 5 passing through the insertion passage is drawn upward through the opening 9d. The drawn wire harness 5 is connected to an electrical component (not shown) in the slide sheet 1 through a connector.

  Further, bolt holes 9g are formed in both side walls on the front end side of the horizontal frame portion 9c. The bolt hole 9g is matched with the bolt hole 19h of the support member 19 fixed to the front end of the seat leg 3, and the bolt B is inserted and fixed. Thereby, the slider 9 connected and fixed to the seat leg 3 is moved back and forth following the movement of the slide seat 1.

  The rectangular cylindrical caterpillar protector 30 that is externally mounted on the wire harness 5 that is slidably wired to the harness insertion portion 7a of the extra length housing case 8 and the harness rail 7 is a strip-shaped continuous body as shown in FIG. The flat plate 40 made of the long material is folded and assembled. The flat plate 40 is provided with four bent lines 41, 42, 43, 44 extending in the length direction X at intervals in the middle portion in the width direction Y, and the flat plate 40 is provided with five sides in the width direction. It divides into S1-S5, bend | folds the bending lines 41-44 at right angle, and as shown in FIG. .

  Further, locking protrusions 45 are provided in the length direction X at intervals on the side edges of one side S1 on both sides of the flat plate 40 in the width direction. The locking protrusion 45 is provided with a notch 45a on both sides of the base of the arcuate protrusion, and the locking side 45b protrudes on both sides. An elongated locking hole 46 for inserting and locking the locking protrusion 45 is provided in the other side S5 of the flat plate 40. Cuts 46a are provided at both ends in the length direction of the locking holes 46, and small-diameter holes 46c are provided at the tips thereof. A locking side 45b is applied to the cut 46a, and a crack is prevented from occurring at the tip of the cut 46a by the small diameter hole 46c. By bending the flat plate 40 along the folding lines 41 to 44 and inserting and locking the locking protrusions 45 into the locking holes 46 with the sides S1 and S5 overlapped, the rectangular tube shape can be maintained. Yes.

  The flat plate 40 is provided with cut lines 48 in the width direction Y that connect the four bent lines 41 to 44 with an interval in the length direction X to separate the sides S2, S3, and S4. Small diameter holes 48a are continuously provided at both ends of the cutting line 48, that is, at positions where the bending lines 41 and 44 are in contact with each other to prevent cracks from occurring at the tip. Further, an arc-shaped cut 49 having a straight line curved at the center of the side S3 is provided at the center of the cut line 48, one side adjacent in the length direction is projected in an arc shape, and the other is formed in an arc shape. Recessed and provided with an uneven fitting part.

  As shown in FIG. 7 (C), the folding lines 41 to 44 provided on the flat plate 40 are cut into about 1/3 of the plate thickness to form a circular arc-shaped line. The cut line 48, the locking hole 46, and the locking protrusion 45 are all formed by punching a flat plate. Therefore, after forming the flat plate 40, it is formed by punching or cutting.

  While the protector 30 bends the folding lines 41 to 44 in advance, the locking protrusions 45 are not inserted into the locking holes 46, and both sides S1 of the protector 30 in which the wire group of the wire harness 5 is bent in an open state. Insert from the opening between S5. After inserting the wire group, the sides S1 and S5 are overlapped, the locking protrusion 45 is inserted and locked into the locking hole 46, and the wire group is inserted into the square tube and is covered.

  The protector 30 has a configuration in which the three sides S2, S3, and S4 of the square tube are separated in the length direction by the cut line 48, and the overlapping sides S1 and S5 are connected to be bent in the length direction, In addition, the separated side S3 is in a state in which the adjacent sides S3 are concavo-convexly fitted with arcuate cuts. That is, a caterpillar-shaped protector is provided in which short rectangular tubes are sequentially connected in the length direction so that they can be bent, and adjacent square tubes are fitted to each other so that they do not shift in the width direction.

  The wire harness 5 pulled out to the vehicle body side through the slider 9 and the harness insertion portion 7a of the harness rail 7 and the extra length accommodation box 8 slides while being bent. Therefore, the exterior material of the wire harness 5 needs to be flexible like a conventionally used corrugated tube, and the caterpillar-type protector has flexibility, so that it can be used as the exterior material of the wire harness 5. .

  Further, when the caterpillar type protector 30 is used, it can be fitted in the wire harness insertion portion 9a formed of a rectangular frame of the slider 9 and the ratchet hollow harness insertion portion 7a of the harness rail 7 is not rattled. Can be slidably fitted inside. Furthermore, the upper and lower surfaces of the protector 30 slide slidably on the bottom surface of the main body 8a of the extra length housing case 8 and the upper surface of the lid 8b, so that the extra length housing case 8 can be moved in a stable posture.

Next, the movement of the wire harness 5 that follows the sliding operation of the slide sheet 1 will be described.
The slider 9 fitted to the slider sliding portion 7b of the harness rail 7 moves back and forth along the upper wall 6f of the seat rail 6 in conjunction with the sliding of the slide seat 1 in the front-rear direction. The protector 30 externally attached to the wire harness 5 connected to the slider 9 moves back and forth in the harness insertion portion 7a of the harness rail 7, and the wire harness 5 enters and exits in the extra length housing case 8 according to the front and back movement. . Thereby, the wire harness 5 is caused to smoothly follow the sliding operation of the slide sheet 1.

  Specifically, FIG. 3A shows a case where the slide sheet 1 is in the rear position, and FIG. 3B shows a case where the slide sheet 1 is in the front position. When the slide sheet 1 is slid from the front to the rear, the wire harness 5 housed in the extra length housing case 8 is pulled out from the opening 8d and inserted into the harness insertion portion 7a of the harness rail 7. The bent portion of the front end of the wire harness 5 in the extra length accommodation case 8 moves to the rear of the extra length accommodation case 8.

  On the other hand, when the slide seat 1 slides from the rear to the front, the U-shaped bent portion in the extra length accommodation case 8 moves forward, and the wire harness 5 inserted through the harness insertion portion 7a of the harness rail 7 opens. It is drawn into the extra length accommodation case 8 from 8d and accommodated as an extra length portion.

  As shown in FIG. 3 (C), in the apparatus of Patent Document 2, the wire harness sheathed with the corrugated tube CT is inserted into the extra length housing case 110 from the front end of the wire harness rail 102 by first bending, The wire harness is U-turned in the extra wire length accommodation case 110, and the width S1 is widened because the insertion portions of the wire harness are arranged in parallel at three locations. On the other hand, in this invention, since the wire harness insertion part in the extra length accommodation case 8 is continuing linearly at the front end of the harness insertion path 7a of the harness rail 7, the harness rail and the extra length accommodation case 8 are connected. The width S2 of the combined portion can be shortened by the width S3 of the wire harness rail 102, the apparatus can be reduced in size, the installation space can be reduced, and there is an existing installation such as a duct on the side of the seat rail 6. Does not interfere.

  Further, in the conventional device of FIG. 3C, the wire harness sheathed with the corrugated tube CT needs to be bent twice in the electric wire excess length accommodation case 110, but in the device of the present invention, it is sheathed with the caterpillar type protector 30. Since the wire harness only needs to be bent once in the extra length housing case 8, bending fatigue of the wire harness can be reduced. In addition, since the wire harness is packaged with the rectangular cylindrical protector 30 and the upper and lower surfaces of the protector 30 are moved along with the upper and lower surfaces of the extra length housing case 8, the wire harness can be stably moved along the design path. .

FIG. 8 shows a modification of the extra length accommodation case 8.
In FIG. 8, as shown in comparison with the harness rail 7 of the embodiment and the integral extra length accommodation case 8, the extra length accommodation case 8-1 in the middle variant 1 and the extra length in the lower variant 2 are shown. The storage case 8-2 shortens the length of the extra length containment case 8 by L5 and L6, respectively, reduces the amount of forward projection, widens that amount, the slide seat is at the front end position, and the wire harness is extra length It accommodates in the accommodation cases 8-1 and 8-2 as shown by a one-dot chain line in the figure, and the extra length accommodation length is the same as that of the upper extra case accommodation case 8.

  Both the extra length accommodation cases 8-1 and 8-2 are not bent in an arc shape, but are bent in a rectangular shape in the orthogonal direction. The extra length accommodation case 8-1 is inclined with the outer wall 8k on the folded side facing the opening 8e. On the other hand, the extra length accommodation case 8-2 has a substantially rectangular shape, the outer wall 8k on the folded side is parallel to the other side, and the extra length can be accommodated along the side 9i toward the opening 8e. The length dimension is further shortened from -1.

  As the first and second modifications, when the forward projecting dimension of the extra length accommodation case 8 is reduced, it can be suitably used when there is a limit to the space for accommodating the extra length accommodation case at the lower front floor of the passenger seat.

FIG. 9 shows a modification of the caterpillar type protector that accommodates the wire harness.
In the first modification shown in FIGS. 9A and 9B, a rib 30r is provided at the intermediate portion in the height direction of the side S3 of the protector 30 that slides along the inner surface of the outer wall of the extra length accommodation case described in the embodiment. Projecting continuously in the length direction. As described above, when the rib 30r is protruded, the rib 30r comes into sliding contact with the inner surface of the outer wall of the extra length accommodation case, and the frictional resistance is reduced. Therefore, the wire harness accommodated in the protector in the extra length accommodation case can be moved smoothly, and the durability of the protector can be increased.

  In the second modification shown in FIG. 9C, the caterpillar type protector 30-1 has a triangular cross section, and the triangular apex 30t is brought into sliding contact with the inner surface of the outer wall of the extra-length housing case to reduce the frictional resistance. . When the caterpillar type protector 30-1 having a triangular cross section is used, the surplus length accommodation case is also deformed as shown in the figure to obtain the surplus length accommodation case 8-3 of Modification 3. In the extra length accommodation case 8-3, it is preferable that the outer wall 8k has a V-shaped cross section so that the gap with the outer surface of the protector 30-1 is narrowed.

  10 to 12 show modified examples 4, 5, and 6 in which the direction of the extra length accommodation case that protrudes from the front end of the harness rail 7 is changed.

  10A and 10B, the extra length accommodation case 8-4 of the fourth modification is vertically downward, and only the outer wall 8k is positioned on the upper surface, thereby reducing the area receiving the load from the upper surface of the floor. The extra length accommodation case is accommodated between the floor material composed of the moldings 10B and 10C and the floor panel 2, and has sufficient rigidity with respect to a normal load from above the molding. When an impact load or a heavy load is applied, there is a possibility that the load may act on the extra length accommodation case. Therefore, the area that receives the load from above the mall can be reduced.

As shown in the extra length accommodation case 8-5 of the modified example 5 shown in FIG. 11, it is inclined downward.
As shown in the extra length accommodation case 8-6 of Modification 6 shown in FIG.

  The wire harness routing device for a slide sheet of the present invention is not limited to the above embodiment, and can be variously modified without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Slide seat 3 Seat leg part 2 Floor panel 5 Wire harness 6 Seat rail 7 Harness rail 7a Harness insertion part 7b Slider sliding part 8 Extra length accommodation case 8d, 8e Opening 9 Slider 10A-10C Mall 30 Caterpillar type protector

Claims (6)

One linear harness rail disposed rearward from the side front end of the seat rail for the slide seat;
A surplus length accommodation case that is arranged in front of the seat rail in a continuous manner with the front end of the harness rail,
A slider coupled to a slide sheet and movably fitted in the harness rail;
With
A wire harness to be wired to the slide seat is inserted into the harness rail through the slider and inserted in a J shape from the harness rail into the extra length accommodation case, and then provided at the rear end of the extra length accommodation case. A wire harness routing device for a slide seat, wherein the wire harness is pulled outward from the open opening.   The slide according to claim 1, wherein the harness rail and the extra length accommodation case are integrally formed, or the harness insertion port at the front end of the harness rail and the one side opening of the extra length accommodation case are continuous as separate bodies. Wire harness routing device for seats. The length (L1) of the extra length accommodation case is in the range of 60% to 20% of the length (L2) of the harness rail, and
The length (WL1) of the wire harness accommodated in the harness rail and the length (WL2) of the wire harness accommodated in the extra length accommodation case at the rearmost position of the slide sheet are WL1: WL2 = 1: 4 to 1:12
The wire harness for a slide seat according to claim 1 or 2, wherein the extra length of the wire harness is not in the harness rail but is accommodated in the extra length accommodation case when the slide seat is in the foremost end position. Routing device. The harness rail includes a harness insertion portion having a box-shaped cross section that extends along the outer surface of the side wall of the seat rail, and a slider sliding portion that protrudes from one side of the upper surface of the harness insertion portion. The slider sliding portion has an upper surface opening in a molding that serves as a vehicle compartment floor material, a slider that fits into the slider sliding portion protrudes from the opening, and the slider is a seat leg portion of the slide seat. Connected to
The wire harness routing device for a slide seat according to any one of claims 1 to 3, wherein the harness rail and the extra length accommodation case are disposed below the molding. The extra-length housing case is composed of a substantially U-shaped main body having a relatively shallow bottom and a lid that is covered after the wire harness is housed in the main body.
Openings are provided on both sides of the rear end surface of the extra length accommodation case, one side opening is connected to the front end opening of the harness rail, the wire harness is pulled out from the other side opening, and a circle is formed at the center between the both side openings. Provide a central closure recessed in an arc or concave,
The front end surface is formed in an arc shape or a straight shape perpendicular to both side walls, and the wire harness inserted through the extra length accommodation case is bent along the front end surface. The wire harness wiring apparatus for slide sheets of any one of Claims 1. The wire harness that is inserted into the harness insertion portion of the harness rail and the extra length housing case is provided with a caterpillar type protector,
The protector is formed in a cylindrical shape by bending a plurality of folding lines extending in the length direction on the belt-shaped flat plate and spaced in the width direction, and spaced in the length direction in the width direction. 6. The device according to claim 1, wherein one side is continuous and the other side is separated and connected in a state of being bent on one side but not bent on the other side. Wire harness wiring device for slide sheets.

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