JP2014187809A - Sheath material for wire harness and wiring device of wire harness for slide seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accommodate an extra length of a wire harness following sliding of a slide member while reducing the number of components and reducing a loading space in a vehicle.SOLUTION: A square cylinder is formed by folding four folding lines 21-24 extending in a length direction and provided at intervals in a width direction in a band-shaped plate 20 and three surfaces of the square cylinder are separated by adding cuts 27 and 28 in the width direction while being spaced in the length direction. On the other hand, one surface is not separated to form continuous parts 29a and 29b, and the continuous parts 29a and 29b are formed alternately in the length direction on a pair of opposing surfaces 11 and 12 of the square cylinder so as to be folded in an accordion shape.

Description

  The present invention relates to a wire harness exterior material and a wire harness routing device for a slide sheet using the exterior material, and more specifically, by bypassing the extra length of the wire harness that follows the movement of a slide member such as a slide sheet. It is not necessary to install an extra length accommodation case for accommodation.

  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 sheet is usually about 240 mm to 300 mm at maximum. Recently, long slide seats having a maximum slide size of about 400 mm to 1200 mm are also provided so that a large space can be opened in front of or behind the seat.

  As a wire harness routing device that is routed between a vehicle body floor and a slide seat of this type, a device shown in FIGS. 7 and 8A and 8B is disclosed in Japanese Patent Application Laid-Open No. 2010-193599 (Patent Document 1). Has been proposed. In this apparatus, a harness rail 102 that passes through the wire harness W / H is laid on the floor adjacent to the side of the seat rail 101 for the slide seat 100, and the wire is adjacent to the side of the harness rail 102. A surplus length housing case 103 of the harness is installed. The wire harness W / H wired to the slide sheet 100 is branched from the floor harness, inserted into the extra-length housing case 103 in a state of being covered with a corrugated tube, and then inserted into the harness rail 102 to be inserted into the slide sheet 100. The wiring is passed through the slider 104 that slides on the harness rail 102 in conjunction with the slide sheet 100. When the slider 104 is positioned on one end side (A side) of the harness rail 102 as shown in FIG. 8A, the extra length is accommodated with the extra length portion of the wire harness W / H being detoured in a U shape. The wire harness W housed in the case 103 and housed in the extra length housing case 103 as the slider 104 moves to the other end side (B side) in conjunction with the slide sheet 100 as shown in FIG. The / H surplus length part is pulled out to the harness rail 102 and the U-shaped bent part C moves from the B side of the surplus length housing case 103 to the A side.

JP 2010-193599 A

  In Patent Document 1, in addition to the seat rail 101, the harness rail 102, and the slider 104, an extra length accommodation case 103 is required, so the number of parts increases, and on the side of the harness rail 102 laid on the vehicle body floor, There is a problem that a space for installing a wide extra-length accommodating case 103 that detours and accommodates the extra length portion of the wire harness is required, and the vehicle mountability is not good.

  This invention is made | formed in view of the said problem, and makes it the subject that the extra length of the wire harness made to follow the sliding operation | movement of a sliding member can be accommodated, aiming at reduction of a number of parts and reduction of a vehicle mounting space.

  In order to solve the above-mentioned problem, the first invention is to form a rectangular tube by bending four folding lines extending in the length direction on the belt-shaped flat plate and spaced apart in the width direction. The three sides of the square tube are separated by cutting in the width direction with an interval in the direction, while one surface is not separated and is a continuous portion, and the continuous portion is formed on a pair of opposing surfaces of the square tube. An outer covering material for a wire harness is provided that is formed alternately in the length direction so as to be bent in an accordion shape.

  As described above, the exterior material according to the first aspect of the present invention is a rectangular tube formed by bending a belt-shaped flat plate along four folding lines, and making a cut in the width direction with an interval in the length direction. A caterpillar-type exterior material is used in which three surfaces are separated and one surface is not separated. In particular, according to the present invention, since the continuous portions are provided alternately in the length direction on a pair of opposing surfaces of the rectangular tube so that the exterior material can be bent in an accordion shape, a wire harness inserted through the exterior material can be easily obtained. Can be bent into an accordion shape. Therefore, when the exterior material of the present invention is attached to a wire harness that is wired to the slide member and has a surplus length to follow the slide operation of the slide member, the wire harness is routed according to the movement of the slide member. Since the surplus length can be absorbed by being bent into an accordion shape in the path, the surplus length accommodation case for bypassing and accommodating the surplus length portion of the wire harness becomes unnecessary. That is, the wire harness can smoothly follow the sliding operation of the sliding member while reducing the number of parts and the vehicle mounting space.

  The exterior material is provided with a locking protrusion protruding on one side of both side edges in the width direction of the belt-shaped flat plate, and a locking hole for inserting and locking the locking protrusion on the other side. It is preferable to bend along the line to form a square tube shape, and to hold the square tube shape by inserting and locking the locking protrusions into the locking holes.

  The exterior material is formed by punching an extruded flat plate, which can be formed by folding and assembling, can be formed at a lower cost than a corrugated tube of a conventional wire harness exterior material, and remains flat when transported It is not bulky. Moreover, since it is not a closed cylinder, it can be easily packaged on the wire harness.

In the second invention, one harness rail disposed from the front to the rear on the side of the seat rail for the slide seat;
A slider coupled to a slide sheet and slidably fitted in the harness rail;
With
After the wire harness to be wired to the slide seat is inserted into the harness rail through the slider, it is pulled out from one end of the harness rail and connected to the floor harness,
The wire harness inserted through the harness rail is attached with the exterior material of the first invention, and the exterior material is bent into an accordion shape so that the extra length of the wire harness is accommodated in the harness rail. A wire harness routing device for a slide sheet is provided.

  In the wire harness routing device for wiring the wire harness connected to the floor harness to the slide seat as described above, the exterior material of the first invention is attached to the wire harness inserted through the harness rail. Therefore, it is possible to bend the wire harness in the accordion shape in the harness rail according to the sliding movement of the slide seat and absorb the excess length. A wide extra length accommodation case for accommodating the extra length portion of the wire harness by detouring in a U-shape is not required, and the number of parts and the vehicle mounting space can be reduced.

While alternately forming the continuous portions in the length direction on the upper and lower surfaces of the exterior material, and providing protrusions on both side surfaces adjacent to the continuous portion formed on the lower surface of the exterior material,
The harness rail-shaped harness insertion portion of the harness rail is continuously provided in the length direction with a support rail that slidably supports the protrusion at the upper position of the inner surface of both side walls,
A separation end surface in which the protruding portion is supported by the support rail, a separation end surface having one side connected by a continuous portion on the lower surface side of the exterior material is positioned as the uppermost position, and a side edge is connected by a continuous portion on the upper surface side of the exterior material It is preferable that the extraneous portion of the wire harness is accommodated in the harness insertion portion by bending the exterior material in a continuous W shape in a side view with the lowermost position.

As described above, the protrusions provided on both side surfaces of the exterior material are slidably supported by the support rails provided on the inner surfaces of both side walls of the harness insertion portion, so that the exterior material can be bent smoothly to absorb excess length. It can be done smoothly.
It is preferable that the protrusion has a cylindrical shape. The support rail is composed of two parallel upper and lower rail plates projecting from the inner surfaces of both side walls of the harness insertion portion, and has a structure in which a protruding portion is slidably fitted between the upper and lower rail plates and supported. Preferably it is.

In addition, the total length (L) of the harness rail is defined such that the slide length of the slide sheet is X, the dimension (pitch) in the length direction between adjacent continuous portions of the exterior material is a, and the thickness of the exterior material is b. In this case, the following formula (1) is satisfied.
L = (Total length of exterior material) ≧ X + Lb / a (1)

As described above, the exterior material according to the first aspect of the present invention is a rectangular tube formed by bending a band-like flat plate extending in the length direction into a quadrangular tube, and making a cut in the width direction with an interval in the length direction. A caterpillar type in which the three surfaces of the rectangular tube are separated and one surface is not separated, and in particular, the continuous portions are alternately provided in the length direction on a pair of opposed surfaces of the rectangular tube. Can be bent into an accordion shape.
Therefore, in the wire harness routing device for wiring the wire harness connected to the floor harness to the slide seat as in the second invention, by attaching the exterior material of the first invention to the wire harness inserted through the harness rail, The wire harness can be bent into an accordion shape in the harness rail in accordance with the sliding operation of the slide sheet, and the surplus length can be absorbed. As a result, a wide extra-length housing case that is disposed on the side of the harness rail and detours and accommodates the extra length of the wire harness is no longer necessary, which reduces the number of parts and reduces the vehicle mounting space. The wire harness can smoothly follow the movement of the slide seat while achieving reduction.

It is a schematic perspective view which shows the slide sheet in this embodiment. It is an AA line sectional view when a slide sheet exists in the backmost position. The exterior material of a wire harness is shown, (A) is an expanded view, (B) is a perspective view. A harness rail is shown, (A) is a perspective view, (B) is a BB sectional drawing. It is CC sectional view taken on the line which shows the bending state of the exterior material inserted in the harness insertion part. It is explanatory drawing which shows a motion of the wire harness which follows the sliding operation | movement of a slide sheet, (A) is when a slide sheet is in the most back position, (C) is when a slide sheet is in the most front position, (B) Indicates when the slide sheet is at an intermediate position between (A) and (C). It is drawing which shows a prior art example. (A), (B) is an operation explanatory view of a conventional example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 6 show this embodiment.
As shown in FIG. 1, a passenger seat side slide sheet 1 mounted on a car is a long slide sheet that can slide about 400 mm to 1200 mm. In order to supply power to an electrical component (not shown) mounted on the slide sheet 1. The wire harness 3 is wired from the floor panel 2 to the slide sheet 1. The wire harness 3 has a predetermined extra length so as to follow the sliding operation of the slide sheet 1.

  As shown in FIG. 2, a pair of left and right legs 4 are provided on the lower surface of the slide seat 1, and each leg 4 is slidably attached to a pair of left and right seat rails 6 mounted on the floor panel 2. Each seat rail 6 has the structure shown in FIG. 2, and the shaft portion 4a of the leg portion 4 protruding below the seating surface of the slide seat 1 is inserted into the seat rail 6, and the arm portion 4b extends from the shaft portion 4a to the left and right. The wheel 4c pivotally supported on the outer surface of the arm portion 4b is rotatably fitted in the side space 6a in the seat rail 6. Although not shown in the drawing, a molding that serves as a vehicle floor is laid on the upper wall 6b of the left and right side spaces 6a sandwiching the upper surface opening 6c at the center of the seat rail 6.

  Adjacent to the side of one seat rail 6, one linear harness rail 7 is installed from the front to the rear. A wire harness 3 branched from a floor harness routed to the floor panel 2 is inserted from a front end into a harness insertion portion 7a having a box-shaped cross section of the harness rail 7 and is slidably fitted to the harness insertion portion 7a. The slider 8 is connected to the slide sheet 1 through the wire harness 3, and the wire harness 3 is wired in the slide sheet 1. A molding (not shown) is also laid on the upper surfaces of the left and right upper walls 7c sandwiching the upper surface opening of the harness insertion portion 7b.

A square tubular caterpillar type exterior material 10 as shown in FIG. 3 is attached to the wire harness 3 inserted into the harness insertion part 7a. The exterior material 10 is assembled by bending a flat plate 20 made of a long resin material that is continuous in a strip shape shown in FIG. The flat plate 20 is provided with bending lines 21, 22, 23, and 24 that extend in the length direction x and indicated by two-dot chain lines in FIG. Is divided into five sections S1 to S5 in the width direction, the folding lines 21 to 24 are bent at right angles, and the sections S1 and S5 on both sides in the width direction are overlapped to form a rectangular cylinder as shown in FIG. I am trying to do it. That is, the section S3 in FIG. 3A is the upper surface 11 of the rectangular tubular exterior material 10 in FIG. 3B, and the sections S4 and S2 are the side surfaces 13 and 14 of the exterior material 10, respectively. And S5 become the lower surface 12 of the exterior material 10.
In this embodiment, the distance between the folding lines 21 and 22 and the distance between the folding lines 23 and 24 are smaller than the distance between the folding lines 22 and 23, and the thickness b is smaller than the width c. A rectangular tube-shaped exterior material 10 is formed.

  In addition, locking protrusions 25 are provided on the side edges of one section S1 on both sides in the width direction of the flat plate 20 at intervals in the length direction x. The locking protrusions 25 are provided with cuts 25a on both sides of the base of the arcuate protrusion, and the locking sides 25b protrude on both sides. An elongated locking hole 26 for inserting and locking the locking protrusion 25 is provided in the partition S5 on the other side of the flat plate 20. Cuts 26a are provided at both ends of the locking hole 26 in the length direction, and small-diameter holes 26b are provided at the ends thereof. A locking side 25b is applied to the cut 26a, and a crack is prevented from being generated from the tip of the cut 26a by the small diameter hole 26b. The flat plate 20 is bent along the folding lines 21 to 24, and the rectangular projections 25 are inserted and locked into the locking holes 26 in a state where the sections S1 and S5 are overlapped, so that the rectangular tube shape can be maintained.

The flat plate 20 is provided with a first cut 27 and a second cut 28 in the width direction y with an interval in the length direction x.
The first cuts 27 are a pair of cuts extending from adjacent folding lines 22 and 23 to the side edges of the sections S1 and S5 on both sides in the width direction at predetermined positions in the length direction. By inserting, the side surfaces 13 and 14 and the lower surface 12 of the outer packaging material 10 of the square tube are separated, while the upper surface 11 is not separated and is formed as a continuous portion 29a (shown by a one-dot chain line).
The second cut 28 is cut by a line connecting the folding lines 21 and 24 at a predetermined position in the length direction. By inserting the second cut 28, the upper surface 11 of the exterior member 10 of the square tube 10 is cut. In addition, the side surfaces 13 and 14 are separated, while the lower surface 12 is not separated and is formed as a continuous portion 29b. In the present embodiment, the first cuts 27 and the second cuts 28 are alternately provided at intervals a in the length direction of the flat plate 20, so that the continuous portions 29 a and 29 b are formed on the upper and lower surfaces 14 and 12 of the exterior material 10. As shown in FIGS. 5 and 6, the exterior material 10 can be bent in an accordion shape by being alternately formed at intervals a in the length direction.

  A small-diameter hole 27 a is provided at one end of the first cut 27, that is, a position in contact with the folding line 22 or the folding line 23, to prevent cracking from the end of the first cut 27. Further, small diameter holes 28 a are provided at both ends of the second cut 28, that is, at positions where the second cuts 28 are in contact with the bending lines 21 and 24, thereby preventing cracks from occurring at the end of the second cut 28.

  In addition, cylindrical protrusions 30 are provided at predetermined positions in the sections S2 and S4 of the flat plate 20 adjacent to the continuous portion 29b. When the folding lines 21 to 24 of the flat plate 20 are folded to form the rectangular tubular exterior material 10, the protrusion 30 is provided on both side surfaces 13 and 14 adjacent to the continuous portion 29 b formed on the lower surface 12 of the exterior material 10. . Moreover, in the exterior material 10 of this embodiment, the protrusion part 30 is provided in the both sides | surfaces 13 and 14 also in the front end of the exterior material 10 arrange | positioned at the front end side of the harness rail 7. FIG.

  The bending lines 21 to 24 provided on the flat plate 20 are cut to about 1/3 of the plate thickness to have a circular arc shape. The first cut 27, the second cut 28, and the locking protrusion 25 are all formed by punching a flat plate.

  While the outer packaging material 10 is bent in advance by the folding lines 21 to 24, the locking protrusions 25 are not inserted into the locking holes 26, and both side sections S1 of the outer packaging material 10 in which the wire group of the wire harness 3 is bent in an open state. And inserted from the opening between S5. After inserting the electric wire group, S1 and S5 are overlapped, and the locking protrusion 25 is inserted and locked into the locking hole 26, and the electric wire group is inserted into the rectangular tube and covered.

On the other hand, the harness rail 7 has the shape shown in FIGS. 4A and 4B, and the protrusion 30 of the exterior material 10 is slid on the upper position of the inner surface of both side walls of the harness insertion portion 7a having a box-shaped cross section. Support rails 7b that are movably supported are provided continuously in the length direction. The support rail 7b is composed of two upper and lower parallel rail plates 7b-1 and 7b-2 projecting from the inner surfaces of both side walls, and the protrusion 30 is slidable between the upper and lower rail plates 7b-1 and 7b-2. The structure is supported by fitting. The upper rail plate 7b-1 is provided at a predetermined distance from the upper wall 7c of the harness rail 7.
Although not shown, the front end of the harness rail 7 closes the front end opening of the support rail 7b so that the protrusion 30 of the exterior member 10 slidably supported by the support rail 7b does not fall out of the opening. ing.

  As described above, as shown in FIG. 5, the protrusion 30 of the exterior member 10 inserted through the harness insertion portion 7a of the harness rail 7 is supported by the support rail 7b of the harness insertion portion 7a. Side view continuous with the separation end surface 31b having one side connected by the continuous portion 29b on the lower surface 12 side as the uppermost position and the separation end surface 31a having one side connected by the continuous portion 29a on the upper surface 11 side of the exterior material 10 as the lowest position. The exterior material 10 can be bent in a W shape.

When the maximum slide length of the slide sheet 1 is X, the dimension (pitch) in the length direction between adjacent continuous portions 29a and 29b of the exterior material 10 is a, and the thickness of the exterior material 10 is b, the harness The total length (L) of the rail 7 satisfies the following formula (1).
L = (the total length of the exterior material 10) ≧ X + Lb / a (1)
In the present embodiment, the overall length L of the harness rail 7 is set to be longer than the overall length of the seat rail 6, but it is also possible to make it the same as the overall length of the seat rail 6 as long as the expression (1) is satisfied. .

The slider 8 is erected so as to communicate with a rectangular tubular wire harness insertion portion 8a slidably fitted to the harness insertion portion 7a of the harness rail 7 and the inside of the wire harness insertion portion 8a. A wire harness pulling tube portion 8b for pulling out the wire harness 3 inserted into the wire harness insertion portion 8a to the slide seat 1 side is provided.
The rear end of the outer packaging material 10 is connected to the wire harness insertion portion 8a, and the wire harness 3 pulled out from the rear end of the outer packaging material 10 is passed through the wire harness insertion portion 8a of the slider 8 and the wire harness extraction tube portion 8b. . The wire harness insertion portion 8a is fitted into the harness insertion portion 7a, and the wire harness pull-out cylinder portion 8b is projected from the opening between the left and right upper walls 7c of the harness rail 7 and is fixedly connected to the leg portion 4 of the slide seat 1. The wire harness 3 pulled out from the distal end opening of the wire harness pull-out cylinder portion 8b is fixed to the rear position of the support member 5 at the rear portion of the wire harness pull-out tube portion 8b. (Not shown) and a connector connection. With this configuration, the slider 8 connected to the leg portion 4 can move the harness rail 7 back and forth following the back and forth movement of the slide seat 1.

Next, the movement of the wire harness 3 that follows the sliding operation of the slide sheet 1 will be described. 6A is when the slide seat is at the most rearward position, FIG. 6C is when the slide seat is at the most forward position, and FIG. 6B is when the slide seat is at an intermediate position between (A) and (C). The state of the wire harness 3 to which the outer packaging material 10 is attached is shown.
As shown in FIG. 6A, when the slide seat 1 is at the rearmost position, the wire branched from the floor harness with the exterior material 10 extending linearly within the harness insertion portion 7a of the harness rail 7 The harness 3 is also linearly inserted into the exterior material 10 and wired into the slide sheet 1 through the slider 8.
As shown in FIG. 6 (B), when the slide sheet 1 is slid forward, the exterior material 10 that extends in a straight line is bent into an accordion shape (continuous W shape in a side view) in the harness insertion portion 7a. Since the wire harness 3 inserted into the interior is similarly bent, the extra length of the wire harness 3 is accommodated in the harness insertion portion 7a on the front side of the wire harness retracting position of the slide seat 1 at the intermediate position.
As shown in FIG. 6C, even when the slide sheet 1 is further slid and reaches the most forward position, the exterior material 10 can be bent in an accordion shape with a smaller bending angle. The extra length portion of the wire harness 3 is accommodated in the harness insertion portion 7a further forward than the wire harness retracting position.

That is, according to this embodiment, since the extra length of the wire harness 3 can be absorbed in the harness insertion part 7a of the harness rail 7, an extra length accommodation case requiring an increase in the number of parts and a wide arrangement space is installed. The wire harness 3 can smoothly follow the sliding operation of the slide sheet 1 without any problems.
In this embodiment, the exterior material of the present invention is attached to the wire harness that is wired to the slide sheet, but the present invention is not limited to this, and wiring to other slide members such as a slide door requires extra length absorption. It can also be used for a wire harness.

DESCRIPTION OF SYMBOLS 1 Slide sheet 3 Wire harness 6 Seat rail 7 Harness rail 7a Harness insertion part 7b Support rail 8 Slider 10 Exterior material 11 Upper surface 12 Lower surface 13, 14 Side surface 20 Flat plate 21, 22, 23, 24 Bending line 27 1st cut 28 2nd Notches 29a and 29b Continuous portion 30 Protruding portions 31a and 31b Separation end face

Claims (3)

  Four folding lines that extend in the length direction on the belt-shaped flat plate and are spaced apart in the width direction are folded to form a square tube, and incisions are made in the width direction at intervals in the length direction. While separating the three surfaces of the rectangular tube, one surface is not separated and is formed as a continuous portion, and the continuous portions are alternately formed in the length direction on a pair of opposed surfaces of the rectangular tube to form an accordion shape. An outer covering material for a wire harness characterized by being bendable. One harness rail arranged from the front to the rear on the side of the seat rail for the slide seat;
A slider coupled to a slide sheet and slidably fitted in the harness rail;
With
After the wire harness to be wired to the slide seat is inserted into the harness rail through the slider, it is pulled out from one end of the harness rail and connected to the floor harness,
The exterior material according to claim 1 is attached to the wire harness inserted through the harness rail, and the exterior material is bent into an accordion shape so that the extra length of the wire harness is accommodated in the harness rail. A wire harness routing device for a slide sheet as a feature. While alternately forming the continuous portions in the length direction on the upper and lower surfaces of the exterior material, and providing protrusions on both side surfaces adjacent to the continuous portion formed on the lower surface of the exterior material,
The harness rail-shaped harness insertion portion of the harness rail is continuously provided in the length direction with a support rail that slidably supports the protrusion at the upper position of the inner surface of both side walls,
A separation end surface in which the protruding portion is supported by the support rail, a separation end surface having one side connected by a continuous portion on the lower surface side of the exterior material is positioned as the uppermost position, and a side edge is connected by a continuous portion on the upper surface side of the exterior material The wire harness arrangement for the slide seat according to claim 2, wherein the exterior material is bent in a continuous W shape in a side view with the uppermost position being the lowermost position and the extra length portion of the wire harness is accommodated in the harness insertion portion. Rope device.

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