JP2012250601A - Wire harness wiring structure of slide seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire harness wiring structure of a slide seat capable of achieving space-saving while securing a good appearance and setting a large slide amount of a slide seat.SOLUTION: The wire harness wiring structure of the slide seat 1, which is supported to be able to slide in the longitudinal direction of lower rails 21 by upper rails 22 that slide along the lower rails 21 fixed on a vehicle body, has housing cylindrical bodies 3, which store wire harnesses 4 in hollow spaces and is extended and contracted in the longitudinal direction with the slide of the slide seat 1. The lower rails 21 are each formed in a cross sectional shape opened upward to store the housing cylindrical bodies 3 inside. The upper rails 22 are structured to cover the upper parts of the lower rails 21 to form cylindrical body passing spaces 23, through which the housing cylindrical bodies 3 can be passed, with the lower rails 21.

Description

  The present invention relates to a wire harness routing structure for a slide seat that is supported by a movable rail that slides along a fixed rail fixed to a vehicle body so as to be slidable in the longitudinal direction of the fixed rail.

  Conventionally, in order to realize various seat arrangements, a lot of slide seats that can slide along a fixed rail on the vehicle body side are adopted for vehicle seats such as minivans and SUVs. In recent years, a long slide has become popular due to the demand for comfort in the passenger compartment space.

  Conventionally, some vehicles that employ a slide seat include an electrical component mounted on the slide seat. In this case, the power supply to the electrical component is mainly performed by a wire harness in which the power supply device on the vehicle body side and the electrical component are connected.

  However, when the wire harness is routed for the purpose of supplying power to the electrical component, there is a concern that the appearance may be deteriorated and the wire harness and the peripheral member may interfere when the slide sheet slides. In particular, in the case where the long slide is realized as described above, the movement range of the wire harness is expanded as the slide amount of the slide sheet increases, and thus the above-described problem becomes more remarkable.

  Therefore, conventionally, a wire harness having a stretchability is routed to the side of the movable rail that slidably supports the slide sheet, and when the slide sheet slides, the wire harness is configured to expand and contract in the floor. It has been proposed (see Patent Document 1 below).

  In the following Patent Document 1, when the slide sheet slides, it is necessary to move the slide sheet side end portion of the wire harness in the same direction as the slide direction of the slide sheet in conjunction with the slide. For this reason, between the storage space in the floor in which the wire harness is routed and the passenger compartment space in which the slide seat is disposed, the same direction as the slide direction corresponds to the position where the end portion passes. An extending opening is formed.

  However, in this case, since the storage space and the vehicle compartment space are communicated with each other through a long opening, the larger the movement amount of the end portion, that is, the slide amount of the slide seat, the larger the vehicle compartment. Dust easily enters from the space toward the storage space, and the accumulation of dust may adversely affect the movement (expansion / contraction) of the wire harness and the power supply to the slide seat side. For this reason, when the prior art disclosed in Patent Document 1 below is adopted, it is extremely difficult to set the slide amount of the slide sheet large.

  Further, in the following Patent Document 1, since the storage space is provided on the side of the movable rail, it is necessary to secure a large space in the floor for arranging and arranging the fixed rail and the wire harness. .

Japanese Patent Laid-Open No. 10-138802

  An object of the present invention is to provide a wire harness routing structure for a slide seat that can realize space saving while ensuring a good appearance and can set a slide amount of the slide seat large.

  The present invention is a wire harness routing structure of a slide seat supported by a movable rail that slides along a fixed rail fixed to a vehicle body so as to be slidable in the longitudinal direction of the fixed rail, and the wire harness is arranged in a hollow space. A storage cylinder that is housed inside and that expands and contracts in the longitudinal direction as the slide seat slides, and wherein the fixed rail has a cross-sectional shape with an open top and houses the storage cylinder inside The movable rail is a slide harness wire harness routing structure configured to cover the upper portion of the fixed rail so as to form a cylindrical body insertion space through which the storage cylinder can be inserted by the fixed rail. It is characterized by.

  The slide seat is a front seat composed of a driver seat and a passenger seat, a rear seat disposed behind the front seat of the vehicle, a third row seat, an auxiliary seat disposed between the left and right seats, and the like. including.

  According to this invention, the appearance can be ensured and the storage cylinder expands and contracts with the slide of the slide sheet, so even if the storage cylinder does not have an opening extending in the same direction as the slide direction of the slide sheet, The slide sheet side end of the wire harness can be moved in conjunction with the slide of the slide sheet.

  In this case, as described above, the opening extending in the same direction as the sliding direction is not necessary, so that dust enters the hollow space regardless of the movement amount of the end portion, that is, the sliding amount of the slide sheet. Can be surely prevented. For this reason, it becomes possible to set the slide amount of the slide sheet large.

  Furthermore, the storage cylinder is stored inside the fixed rail, and the fixed rail and the wire harness are arranged and routed by forming a cylinder insertion space through which the storage cylinder can be inserted by the fixed rail and the movable rail. The space for doing so can be made compact. For this reason, space saving of a wiring structure can be achieved.

  As an aspect of the present invention, the storage cylinder is configured by a plurality of cylinder members having different cross-sectional areas of the hollow space, and in the two adjacent cylinder members, the other cylinder is disposed in the hollow space of one cylinder member. By inserting a member and moving the other cylinder member relative to the one cylinder member as the slide sheet slides, the storage cylinder can be expanded and contracted.

  According to this aspect, the entire storage cylinder can be expanded and contracted without reducing the thickness of the cylinder member. That is, in this case, the storage cylinder can be made thick, and as a result, a storage cylinder that can reliably suppress wear and damage can be provided.

  Further, as an aspect of the present invention, the plurality of cylindrical members are arranged in the longitudinal direction in the order of the cross-sectional area, and the cylindrical member having the largest cross-sectional area is disposed at one longitudinal end of the fixed rail. On the other hand, the cylindrical member having the smallest cross-sectional area can be connected to the movable rail.

  According to this aspect, the cylindrical member having a relatively small cross-sectional area can be advanced and retracted as the slide sheet slides. In this case, since the cylindrical member at a position separated from the fixed rail is moved forward and backward than the cylindrical member having a relatively large cross-sectional area, wear and damage due to friction with the fixed rail can be prevented more reliably. .

  As an aspect of the present invention, the fixed rail extends in the vehicle front-rear direction, and the rear end portion of the storage cylinder is connected to the rear end portion of the fixed rail, while the front end portion is connected to the movable rail. be able to.

  According to this aspect, even if the slide seat is slid rearward of the vehicle, the storage cylinder can be positioned rearward of the foot space positioned in front of the slide seat in the vehicle. In this case, since the storage cylinder does not always exist in the foot space, it is possible to prevent an occupant's feet seated on the slide seat from inadvertently coming into contact with the storage cylinder, and to securely connect the storage cylinder and the wire harness. Can be protected.

  Further, as an aspect of the present invention, the wire harness can be formed in a spiral shape and can be expanded and contracted as the slide sheet slides.

  According to this aspect, it is possible to reliably prevent the wire harness from being entangled in the storage cylinder or part of the wire harness from protruding from the storage cylinder when the slide sheet is slid.

  As an aspect of the present invention, the wire harness can be formed into a spiral shape after inserting a group of wires bundled with a plurality of wires into a tube.

  According to this aspect, when manufacturing the wire harness, the electric wires can be selected according to the type, number, etc. of the electrical components to be mounted on the slide sheet, so that it is possible to easily cope with various combinations of electric wire groups. Therefore, it is possible to easily cope with a case where a variety of wire harnesses and a small amount of production are required due to diversification of electrical components mounted on the slide sheet.

  According to the present invention, it is possible to provide a wire harness routing structure for a slide seat that can realize space saving while ensuring a good appearance and can set a slide amount of the slide seat large.

It is a perspective view which shows the wire harness wiring structure of the slide seat which concerns on embodiment of this invention, and is a figure which shows the state which has a slide seat in a front-end position. The figure which shows the state which has a slide sheet in a rear-end position. 2 is a cross-sectional view taken along line AA in FIG. The perspective view which abbreviate | omitted the slide sheet and the upper rail. The perspective view which shows a storage cylinder. The perspective view which abbreviate | omitted the slide sheet | seat, the upper rail, and the storage cylinder. The perspective view which shows a wire harness. FIG. 8 is a cross-sectional view taken along line B-B in FIG. 7.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 and FIG. 2 are perspective views showing a wire harness wiring structure of a slide seat, and are views showing a state in which the slide seat is at a front end position and a rear end position, respectively. 3 is a cross-sectional view taken along line AA in FIG. 2, FIG. 4 is a perspective view in which the slide seat and the upper rail are omitted, FIG. 5 is a perspective view showing the storage cylinder, and FIG. FIG. 7 is a perspective view showing a wire harness, and FIG. 8 is a cross-sectional view taken along the line B-B in FIG. 7.

  The wire harness routing structure of the slide seat according to the present embodiment can be applied to a vehicle such as a minivan or SUV, for example, and in this embodiment, a floor panel (not shown) constituting the floor surface of the passenger compartment. The slide sheet 1 disposed above, the slide mechanism 2 having the lower rail 21 and the upper rail 22, the storage cylinder 3 housed in the lower rail 21 of the slide mechanism 2, and the wire harness housed in the storage cylinder 3 4 is provided in the vehicle.

  A slide seat 1 indicated by a two-dot chain line in FIGS. 1 and 2 is, for example, a rear seat disposed behind a front seat composed of a driver seat and a passenger seat, and is slid in the vehicle longitudinal direction by a slide mechanism 2 described later. Supported as possible.

  The slide mechanism 2 includes a pair of left and right lower rails 21 and 21 extending in the vehicle front-rear direction, and a pair of left and right upper rails 22 and 22 slidably fitted along the lower rails 21 and 21 in the vehicle front-rear direction. ing.

  In the slide mechanism 2, the lower rail 21 is fixed to the floor panel. For example, a flat floor surface is formed by setting the upper surface of the lower rail 21 and the floor surface to the same height position. However, it is not necessarily limited to this, and the lower rail may protrude from the floor surface by being placed on the floor panel.

  Further, in the slide mechanism 2, the upper rails 22 and 22 are fixed to the lower left and right ends of the seat cushion 11 constituting the seat surface of the slide seat 1, whereby the slide seat 1 is supported by the upper rail 22. .

  Further, in the slide mechanism 2, as shown in FIG. 3, the lower rail 21 is a member having a rectangular cross section with the upper part opened, and a fitting part 21a having a U-shaped cross section with the lower part opened on the left and right side surfaces. , 21a. On the other hand, the upper rail 22 is a member having a rectangular cross-section with the lower part opened, and has U-shaped fitting parts 22a and 22a with a U-shaped cross-section opened on the left and right side surfaces.

  In the slide mechanism 2, the upper rail 22 is slidably fitted along the lower rail 21 in the vehicle front-rear direction by fitting the fitting portions 21 a, 21 a of the lower rail 21 and the fitting portions 22 a, 22 a of the upper rail 22. Yes. As a result, when the upper rail 22 slides along the lower rail 21, the slide seat 1 supported by the upper rail 22 slides in the longitudinal direction of the upper rail 22, that is, the longitudinal direction of the vehicle, as shown in FIGS. Is possible.

  In this embodiment, the length of the lower rail 21 in the vehicle front-rear direction is set to be much longer than the width of the slide seat 1 (seat cushion 11) in the vehicle front-rear direction. The slide is realized.

  Further, in a state where the lower rail 21 and the upper rail 22 are fitted, as shown in FIG. 3, the upper surface portion of the upper rail 22 covers the upper portion of the lower rail 21, and will be described later between the lower rail 21 and the upper rail 22. A cylindrical body insertion space 23 is formed.

  In the slide mechanism 2, as shown in FIGS. 1 to 4, the cylindrical storage cylinder 3 is stored inside the lower rail 21. The above-described cylindrical body insertion space 23 allows the storage cylinder body 3 stored in the lower rail 21 to be inserted, so that even if the upper rail 22 slides, the slide mechanism 2 and the storage cylinder body 3 do not interfere with each other. ing.

  Moreover, in this embodiment, this storage cylinder 3 is mainly comprised by the cylindrical three cylinder members 31-33 from which the cross-sectional area (diameter) of hollow space differs. These cylinder members 31 to 33 are arranged in the vehicle front-rear direction in the order of the cross-sectional area, and the cylinder member 31 having the smallest cross-sectional area is arranged at the front end portion, while the cross-sectional area is the largest. A large cylindrical member 33 is disposed at the rear end.

  Further, among the above-described cylindrical members 31 to 33, the cylindrical member 31 is connected to the upper rail 22 of the slide mechanism 2 via, for example, the connecting portion 5 shown in FIG. Are connected to the rear end of the lower rail 21.

  Moreover, the storage cylinder 3 has openings 34 and 35 that serve as entrances and exits of the wire harness 4 described later at both ends, and the openings on the front end side and the rear end side of the cylinder members 31 and 33 are respectively openings. 34 and 35 are set.

  In the storage cylinder 3, the other cylinder member 31 is inserted into the hollow space of the one cylinder member 32 in the two adjacent cylinder members 31 and 32, and the cylinder member 31 is advanced and retracted relative to the cylinder member 32. It is possible to arrange. Further, in the adjacent two cylindrical members 32 and 33, the other cylindrical member 32 is inserted into the hollow space of the one cylindrical member 33, and the cylindrical member 32 is disposed so as to be able to advance and retreat with respect to the cylindrical member 33. Yes.

  In the storage cylinder 3, when the slide seat 1 is slid to the rear of the vehicle, first, the cylindrical member 31 connected to the upper rail 22 is retracted to the rear of the vehicle. At this time, while the cylindrical member 31 is retracted to the rear of the vehicle, the connecting portion 5 comes into contact with the front end portion of the cylindrical member 32, and the connecting portion 5 presses the cylindrical member 32 to the rear of the vehicle. The cylindrical member 32 can be retracted to the rear of the vehicle. For this reason, as shown in FIGS. 1, 4 (a), and 5 (a), the storage cylinder 3 in the extended state is moved in the rearward direction of the slide seat 1 as shown in FIGS. 2, 4 ( b) It is possible to contract as shown in FIG.

  And in the storage cylinder 3, in order to prevent the cylindrical members 31, 32 from coming off from the cylindrical members 32, 33, the diameter-reduced portion having a smaller cross-sectional area than the others (see FIG. On the other hand, a diameter-expanded portion (not shown) having a larger cross-sectional area than the others is formed at the front end portions of the cylindrical members 32 and 33.

  Here, when the slide seat 1 is slid forward of the vehicle, first, the cylindrical member 31 connected to the upper rail 22 advances forward of the vehicle. At this time, while the cylindrical member 31 advances forward of the vehicle. The enlarged diameter portion of the cylindrical member 31 comes into contact with the reduced diameter portion of the cylindrical member 32, and the cylindrical member 31 pulls the cylindrical member 32 forward of the vehicle, thereby causing the cylindrical member 32 to advance forward of the vehicle. Can be done. Therefore, as shown in FIGS. 2, 4 (b), and 5 (b), the storage cylinder 3 in the contracted state is moved along the slide of the slide seat 1 toward the front of the vehicle as shown in FIGS. a) It is possible to extend as shown in FIG.

  Moreover, in this embodiment, as shown in FIGS. 1-5, the wire harness 4 is accommodated in the hollow space of the storage cylinder 3 mentioned above. The wire harness 4 is a power supply line that is routed so as to supply power from a power supply device on the vehicle body side to an electrical component (not shown) of the slide sheet 1, and from the vehicle body side through the opening 35, the hollow space of the storage cylinder 3 It is inserted through the inside and extends from the opening 34 toward the slide sheet 1 and is connected thereto.

  Further, as shown in FIGS. 3, 6, and 7, the wire harness 4 is a so-called curled cord having a spiral shape, and can expand and contract as the slide seat 1 slides in the vehicle front-rear direction. Yes.

  Further, as shown in FIG. 8, the wire harness 4 includes a plurality of electric wires 41, 41,... And the plurality of electric wires 41, 41,. In the present embodiment, as the wire harness 4, a wire group that is previously selected and bundled from a plurality of wire diameters and types of wires is inserted into the shrinkable tube 42 and then spirally shaped. is doing.

  Thus, the storage cylinder 3 and the wire harness 4 are configured to expand and contract as the slide sheet 1 slides, so that when the slide sheet 1 is slid toward the rear of the vehicle, the storage cylinder 3 and the wire harness. 4 contracts toward the rear of the vehicle. On the other hand, when the slide seat 1 is slid forward of the vehicle, both the storage cylinder 3 and the wire harness 4 extend forward of the vehicle.

  In the present embodiment, as described above, it is possible to secure the appearance by storing the storage cylinder 3 in the lower rail 21 and storing the wire harness 4 in the hollow space.

  And since the storage cylinder 3 expands and contracts as the slide seat 1 slides, even if the storage cylinder 3 does not have an opening extending in the same direction as the slide direction of the slide seat 1 (the vehicle front-rear direction here), The end 4 a on the slide sheet 1 side of the wire harness 4 can be moved in conjunction with the slide of the slide sheet 1.

  In this case, as described above, an opening extending in the same direction as the sliding direction is not necessary, so that dust is generated in the hollow space regardless of the amount of movement of the end 4a, that is, the sliding amount of the slide sheet 1. Invasion can be reliably prevented. For this reason, it becomes possible to set the slide amount of the slide sheet 1 large. Thus, the structure provided with the storage cylinder 3 has a more remarkable effect especially in the case where a long slide of the rear seat is realized as in the present embodiment.

  Further, the storage cylinder 3 is stored inside the lower rail 21, and the upper rail 22 and the lower rail 21 form a cylinder insertion space 23 into which the storage cylinder 3 can be inserted, thereby arranging the lower rail 21 and the wire harness 4. Space for installation and wiring can be made compact. For this reason, space saving of a wiring structure can be achieved.

  By the way, when the storage cylinder is configured to be extendable and retractable, for example, a so-called bellows-shaped cylinder in which peaks and valleys are alternately formed in the longitudinal direction may be used. In order to have the property, it is necessary to make the cylindrical body thin. However, if a thin-walled cylinder is used, it may be worn or damaged by contact with the lower rail 21 or the like and repeated deformation of the cylinder itself, and as a result, the stored wire harness may not be reliably protected. is there.

  Therefore, in the present embodiment, as described above, the storage cylinder 3 is configured by the plurality of cylinder members 31 to 33 having different cross-sectional areas of the hollow space. The tubular member 31, 32 is configured to extend and retract relative to the tubular member 32, 33 as the slide sheet 1 slides, thereby expanding and contracting the entire storage tubular body 3. As described above, the storage cylinder 3 can be expanded and contracted by making the cylinder members 31 and 32 advance and retreat without reducing the thickness thereof. That is, in this case, it is possible to make the storage cylinder 3 thick, and as a result, it is possible to provide the storage cylinder 3 capable of reliably suppressing wear and damage.

  In addition, the cylindrical members 31 to 33 are arranged in the longitudinal direction in the order of the cross-sectional area, and the cylindrical member 33 having the largest cross-sectional area is connected to the rear end portion of the lower rail 21, while the cross-sectional area is By connecting the cylindrical member 31 having the smallest size to the upper rail 22, the cylindrical members 31 and 32 having a relatively small cross-sectional area can be moved forward and backward as the slide sheet 1 slides. In this case, as shown in FIG. 3, the cylindrical members 31 and 32 located at a position farther from the lower rail 21 than the cylindrical member 33 are advanced and retracted, so that wear and damage due to friction with the lower rail 21 are more reliably prevented. Can be prevented.

  Further, the cylindrical member 33 located at the rear end is connected to the rear end of the lower rail 21, while the cylindrical member 31 located at the front end is connected to the upper rail 22, so that, for example, as shown in FIG. Even if 1 is slid rearward of the vehicle, the storage cylinder 3 can be positioned rearward of the foot space S positioned on the front side of the slide seat 1 (seat cushion 11). In this case, since the storage cylinder 3 does not always exist in the foot space S, it is possible to prevent an occupant's foot seated on the slide seat 1 from inadvertently contacting the storage cylinder 3 and the storage cylinder 3 and The wire harness 4 can be reliably protected.

  In addition, the wire harness 4 is formed in a spiral shape, and is configured to be expandable / contractable with the slide of the slide sheet 1, so that the wire harness 4 is entangled in the storage cylinder 3 when the slide sheet 1 is slid, It is possible to reliably prevent a part of the wire harness 4 from protruding from the storage cylinder 3.

  In addition, as the wire harness 4, a wire group obtained by previously selecting and bundling necessary wires from a plurality of wire diameters and types of wires is inserted into the contraction tube 42 and then used in a spiral shape. However, in this case, when the wire harness 4 is manufactured, the electric wires can be selected according to the type and number of electric parts to be mounted on the slide sheet 1, so that it can easily cope with various combinations of electric wire groups. be able to. Therefore, it is possible to easily cope with a case where a variety of wire harnesses 4 and a small amount of production are required due to diversification of electrical components mounted on the slide sheet 1.

  By the way, in embodiment mentioned above, although the storage cylinder 3 was comprised by the three cylinder members 31-33, it was not necessarily limited to this, and it comprised by two or four or more cylinder members. May be.

  In addition, the cylindrical members are not necessarily arranged in the order of the size of the cross-sectional area of the hollow space. For example, the cylindrical members having the large cross-sectional area and the cylindrical members having the small cross-sectional area are alternately arranged. You may set up.

Moreover, it is not necessarily limited to using what formed the reduced diameter part and the enlarged diameter part in the front-and-rear end part as a cylindrical member. For example, a truncated cone-shaped cylindrical member having a reduced diameter or an enlarged diameter over the entire width in the longitudinal direction may be used.
Moreover, the shape of the cylindrical member does not necessarily have to be cylindrical, and may be, for example, a polygonal cross section.

In the present invention, the seat may be at least a slide seat, and may not be a rear seat disposed behind the front seat as in the above-described embodiment. Specifically, if the vehicle has a front seat or a three-row seat, it may be a third-row seat, or an auxiliary seat disposed between the left and right seats.
Further, the slide sheet does not necessarily need to be slidable long.

In correspondence between the configuration of the present invention and the above-described embodiment,
The fixed rail of this invention corresponds to the lower rail 21,
Similarly,
The movable rail corresponds to the upper rail 22,
The tube corresponds to the shrink tube 42,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

DESCRIPTION OF SYMBOLS 1 ... Slide sheet 3 ... Storage cylinder 4 ... Wire harness 21 ... Lower rail 22 ... Upper rail 23 ... Cylindrical insertion space 31, 32, 33 ... Cylindrical member 41 ... Electric wire 42 ... Contraction tube

Claims (6)

A wire harness wiring structure of a slide seat supported by a movable rail that slides along a fixed rail fixed to a vehicle body so as to be slidable in a longitudinal direction of the fixed rail,
The wire harness is stored in a hollow space, and includes a storage cylinder that expands and contracts in the longitudinal direction as the slide seat slides.
While the fixed rail has a cross-sectional shape with an open top, the storage cylinder is stored inside,
A wire harness routing structure of a slide seat configured to cover an upper part of the fixed rail so that the movable rail forms a cylindrical body insertion space through which the storage cylinder can be inserted with the fixed rail. The storage cylinder is constituted by a plurality of cylinder members having different cross-sectional areas of the hollow space,
In the two adjacent cylindrical members, the other cylindrical member is inserted into the hollow space of one cylindrical member,
2. The slide sheet according to claim 1, wherein the other cylinder member is configured to extend and retract relative to the one cylinder member as the slide sheet slides, thereby extending and retracting the storage cylinder. Wire harness wiring structure. The plurality of cylindrical members are arranged in the longitudinal direction in the order of the cross-sectional area,
While connecting the cylindrical member having the largest cross-sectional area to one end in the longitudinal direction of the fixed rail,
The wire harness wiring structure of the slide seat according to claim 2, wherein the cylindrical member having the smallest cross-sectional area is connected to the movable rail. Extending the fixed rail in the vehicle longitudinal direction,
While connecting the rear end of the storage cylinder to the rear end of the fixed rail,
The wire harness wiring structure of the slide seat in any one of Claim 1 to 3 which connected the front-end part to the said movable rail. The wire harness routing structure for a slide seat according to any one of claims 1 to 4, wherein the wire harness is formed in a spiral shape so as to be expandable and contractable as the slide seat slides. The said wire harness is a wire harness wiring structure of the slide sheet | seat of Claim 5 formed after inserting the electric wire group which bundled the several electric wire into a tube, and shape | molding helically.

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