JP2015122923A - Wire harness module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology that easily arranges a wire harness in a foam resin panel installed on a floor of a vehicle cabin.SOLUTION: A wire harness module 10 includes: a plate-like foam resin panel 20 installed on a floor of a vehicle cabin; a wire harness 30 which is stored in a recessed part 21 formed on a surface of the foam resin panel 20; and a cover member 40 which is formed by a fiber-reinforced thermoplastic resin heat-sealed to the foam resin panel 20 and closes an opening of the recessed part 21 in which the wire harness 30 is stored.

Description

  The present invention relates to a wire harness module mounted on a vehicle.

  As a wire harness routed in the vehicle, there is a floor wire harness routed on the vehicle floor. Conventionally, the area where the floor wire harness is routed is limited to a floor locker portion or the like corresponding to the boundary with the pillar, and expansion of the area where the floor wire harness is routed is required.

  In recent years, a foamed resin panel may be laid on the vehicle floor in order to flatten the interior floor. Therefore, it is also conceivable to wire a wire harness on this foamed resin panel. For example, Patent Document 1 proposes a wire harness module made of foamed resin laid on a floor. Specifically, the wire harness module described in Patent Document 1 is formed by laminating foamed resin sheets. A harness insertion path is formed in the wire harness module, and the wire harness is inserted through the harness insertion path.

JP 2010-259297 A

  However, in the case of the wire harness module described in Patent Document 1, it is necessary to respectively mold foamed resin sheets having different shapes, and furthermore, a large number of different shapes are formed so that the harness insertion passage is formed in the wire harness module. It was necessary to stack the foamed resin sheets in order. For this reason, there existed a possibility that manufacturing cost might become high. Moreover, it has been difficult to flexibly cope with a design change such as a harness path.

  This invention is made | formed in view of the said subject, Comprising: It aims at providing the technique which routes a wire harness easily to the foamed resin panel laid in the vehicle interior floor.

  In order to solve the above-mentioned problem, a first aspect is a wire harness module mounted on a vehicle, and is formed on a plate-like foamed resin panel laid on the interior floor of the vehicle, and on the surface of the foamed resin panel A wire harness housed in the recess, and a cover member made of a fiber reinforced thermoplastic resin thermally welded to the foamed resin panel and closing the opening of the recess in which the wire harness is housed.

  Moreover, the 2nd aspect WHEREIN: The wire harness module which concerns on a 1st aspect WHEREIN: The said cover member is formed only in the one part area | region in alignment with the said recessed part in the said foamed resin panel.

  Moreover, a 3rd aspect WHEREIN: The wire harness module which concerns on a 1st or 2nd aspect WHEREIN: The said recessed part has a part extended diagonally with respect to the front-back direction of the said vehicle.

  According to the wire harness module which concerns on the aspect from 1st to 3rd, a wire harness can be routed by forming a recessed part in the surface of a foamed resin panel. For this reason, the manufacturing cost of a wire harness module can be suppressed, and it can respond easily also to design changes, such as a harness path | route. Moreover, the cover member can be easily attached to the foamed resin panel by thermal welding by configuring the cover member with a fiber-reinforced thermoplastic resin member having excellent wear resistance. Moreover, the wire harness routed near the surface of the foamed resin panel can be appropriately protected by the cover member attached to the foamed resin panel.

  Moreover, according to the wire harness module which concerns on a 2nd aspect, since a cover member is provided only in the one part area | region in alignment with the recessed part in a foamed resin panel, the material cost of a cover member can be reduced.

  According to the wire harness module which concerns on a 3rd aspect, a wire harness can be routed diagonally with respect to the front-back direction of a vehicle. As a result, the electrical components and the like at the front and rear of the vehicle can be connected at a shorter distance.

It is a schematic perspective view which shows the vehicle interior floor by which the wire harness module which concerns on embodiment was laid. It is a perspective view which shows the wire harness module which concerns on embodiment. It is a perspective view which shows the foamed resin panel which concerns on embodiment. It is a perspective view which shows the foamed resin panel to which the wire harness which concerns on embodiment was attached. It is a top view of the foaming resin panel which shows the example of wiring of the wire harness which concerns on embodiment. It is sectional drawing of the foamed resin panel which shows the other wiring example of the wire harness which concerns on embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the size and number of each part may be exaggerated or simplified as needed for easy understanding.

  FIG. 1 is a schematic perspective view showing a vehicle interior floor on which a wire harness module 10 according to an embodiment is laid. FIG. 2 is a perspective view showing the wire harness module 10 according to the embodiment.

  As shown in FIGS. 1 and 2, the wire harness module 10 according to the present embodiment includes a foamed resin panel 20, a wire harness 30, and a cover member 40.

  The foamed resin panel 20 is a member laid on the floor panel. As shown in FIG. 1, in order to maintain the strength of the floor panel, a center tunnel portion 91 having a U-shaped cross section extending along the front-rear direction of the vehicle and a cross member 93 having a U-shaped cross section traversing left and right. Is provided. The front side of the floor panel is coupled to a dash panel (not shown), and the rear side of the floor panel is coupled to a rear floor panel (not shown).

  In the example shown in FIG. 1, there are four concave portions defined by the center tunnel portion 91 and the cross member 93 on the floor panel. A foamed resin panel 20 constituting the wire harness module 10 is laid in each of the recesses. The foamed resin panel 20 is, for example, a substantially rectangular parallelepiped foamed polystyrene, and is a plate-like member having a thickness of about 3 to 4 cm, for example. By laying the foamed resin panel 20, the concave portion of the floor panel is raised, and the interior floor is flattened. A carpet is laid on the floor panel on which the foamed resin panel 20 is laid.

  FIG. 3 is a perspective view showing the foamed resin panel 20 according to the embodiment. FIG. 4 is a perspective view showing the foamed resin panel 20 to which the wire harness 30 according to the embodiment is attached. As shown in FIGS. 3 and 4, a groove-like recess 21 is formed on the upper surface of the foamed resin panel 20. As shown in the figure, the concave portion 21 not only extends from the front edge portion to the rear edge portion of the foamed resin panel 20 but may also extend in the left and right directions in the middle thereof. Good.

  The wire portion 31 of the wire harness 30 is inserted into the recess 21. And from the side part of the foamed resin panel 20 which is the edge part of the recessed part 21, the electric wire part 31 of the wire harness 30 is exposed, and the connector part 33 connected to an electrical component etc. is attached to the front-end | tip part. Yes.

  As shown in FIG. 3, the width W1 of the opening of the recess 21 is smaller than the maximum width W2 inside the recess 21 (in the example shown, the width of the bottom). When the width W1 of the opening is made smaller than the thickness of the electric wire portion 31 of the wire harness 30, it is possible to effectively suppress the electric wire portion 31 of the wire harness 30 from coming out of the opening of the recess 21. In this case, the electric wire portion 31 is accommodated in the recess 21 by being press-fitted.

  Further, when the maximum width W <b> 2 inside the recess 21 is the same as or smaller than the width of the wire portion 31 of the wire harness 30, the wire portion 31 can be firmly held in the recess 21. Thereby, the generation | occurrence | production of the abnormal noise by the contact of the electric wire part 31 and the foamed resin panel 20, the damage of the electric wire part 31, etc. can be suppressed effectively.

  The depth of the concave portion 21 is not particularly limited. For example, if the thickness of the electric wire portion 31 of the wire harness 30 is substantially the same as the thickness of the electric wire portion 31, the lower surface of the cover member 40 described later and the concave portion are formed. It can be firmly fixed by being sandwiched between the bottom surfaces of the 21.

  The cover member 40 is a lid member that closes the opening of the recess 21 in which the electric wire portion 31 of the wire harness 30 is accommodated. The cover member 40 protects the wire portion 31 by closing the opening of the recess 21. The cover member 40 is a sheet-like resin member extending in a band shape, and is fixed to the foamed resin panel 20 by being thermally welded in a state where pressure is applied to the opening edge portions on both sides of the recess 21.

  The cover member 40 is preferably made of a fiber reinforced thermoplastic resin in which glass fiber or carbon fiber or the like is placed in a thermoplastic resin to improve the strength. In this case, the cover member 40 includes at least one layer of unidirectional sheets in which fibers (composite fibers) reinforced with a thermoplastic resin are arranged (aligned) in one direction. In the case of one layer, it is a uniaxial fiber substrate, and in the case of two layers or more, it becomes a multiaxial fiber substrate. In addition, from the viewpoint of shape maintenance at the time of hot compression molding, preferably, the cover member 40 is connected by a stitching yarn. When the uniaxial fiber base material is connected by stitching yarn, it becomes a comb shape. Moreover, when the multiaxial fiber base material is connected with the stitching yarn, it becomes a multiaxially inserted warp knitted base material. In the case of two or more layers, they may be connected by heat welding without using the stitching yarn. By configuring the cover member 40 with such a material, sufficient wear resistance can be maintained even if the cover member 40 is thinly formed into a sheet shape.

  Moreover, the cover member 40 can be firmly fixed to the foamed resin panel 20 by thermally welding the cover member 40 to the foamed resin panel 20 without using an adhesive. Thereby, protection of the wire harness 30 can be performed more appropriately.

  As shown in FIG. 2, the cover member 40 extends in a band shape along the direction in which the recess 21 extends, and is attached only to a partial region on the surface of the foamed resin panel 20. Thus, the material cost can be suppressed by providing the cover member 40 in a part of the region along the recess 21 instead of being attached to the entire surface of the foamed resin panel 20.

  In addition, if the fiber reinforced thermoplastic resin excellent in abrasion resistance is applied as the material of the cover member 40, the wire harness 30 can be appropriately protected even if the cover member 40 is thin. For this reason, the height difference in the part in which the cover member 40 was attached in the foamed resin panel 20 and the part in which the cover member 40 is not attached can be made small. For this reason, protection of the wire harness 30 and reduction of material costs can be achieved while maintaining the original function (flattening of the floor) of the foamed resin panel 20. However, attaching the cover member 40 to the entire surface of the foamed resin panel 20 is not hindered.

  Thus, by mounting the wire harness module 10 according to the present embodiment on a vehicle, as shown in FIG. 1, the wiring locker portion 95 ( It can be expanded from the boundary between the pillars on the car floor. Thereby, the wiring freedom degree of the wire harness 30 can be raised significantly.

  Further, by integrating the foamed resin panel 20 and the wire harness 30, it is possible to eliminate or minimize the wire harness protection member and clamp. Moreover, according to the wire harness module 10, since the wire harness 30 can be routed by laying the foamed resin panel 20 on the floor panel, the efficiency of the routing operation for the floor wire harness can be improved. .

  Further, the wire harness module 10 has a structure in which a recess 21 is provided on the surface of the foamed resin panel 20, the wire harness 30 is accommodated, and a cover member 40 of fiber reinforced thermoplastic resin is attached thereon. That is, the wire harness 30 can be routed near the surface of the single member foamed resin panel 20. Therefore, the manufacturing cost of the wire harness module 10 can be reduced, and it is possible to flexibly cope with a design change such as a harness path.

  FIG. 5 is a plan view of the foamed resin panel 20 showing a wiring example of the wire harness 30 according to the embodiment. The recess 21 does not necessarily have to extend along the front-rear direction of the vehicle. For example, as shown in FIG. 5, it may have a portion extending obliquely with respect to the front-rear direction of the vehicle. By extending obliquely in this way, the wire harness 30 can be routed obliquely with respect to the front-rear direction. For example, when the electrical components 51 in the front part of the vehicle and the electrical components 53 in the rear part of the vehicle are connected by the wire harness 30, the wire harness 30 is routed diagonally corresponding to the positional relationship in the left-right direction. By doing, the length of the electric wire part 31 can be shortened. Thereby, the material cost can be reduced.

  Moreover, FIG. 6 is sectional drawing of the foamed resin panel 20 which shows the other wiring example of the wire harness 30 which concerns on embodiment. As shown in FIG. 6, the recess 21 may be provided not only on the inner region but also on the edge of the surface of the foamed resin panel 20. In the example shown in FIG. 6, a concave portion 21 extending along the edge is formed by cutting a corner portion on the surface side of the edge of the foamed resin panel 20 at a right angle.

  In the illustrated example, the cover member 40 is thermally welded to the upper surface portion 23 and the side surface portion 25 of the foamed resin panel 20. As shown in FIG. 6, in the cover member 40, a portion that is thermally welded to the upper surface portion 23 is a portion that is substantially parallel to the surface of the foamed resin panel 20, and a portion that is bent with respect to this portion is a side surface. The portion is heat-welded to the portion 25. In this case, an R portion constituted by a bent portion of the cover member 40 is formed at the edge portion of the foamed resin panel 20 where the recess 21 is formed. Of course, the cover member 40 is not bent and thermally welded. For example, the cover member 40 is bent along the electric wire portion 31 of the wire harness 30 accommodated in the recess 21 and both ends thereof are foamed resin panels. 20 may be heat-welded.

  Moreover, in the said embodiment, although the recessed part 21 is extended from the edge part of the front side in the foamed resin panel 20 to the edge part of the back side, even if provided only in the inner part of the surface in the foamed resin panel 20 Good. In this case, the wire harness 30 is routed so that the tip of the electric wire portion 31 is exposed from the upper surface of the foamed resin panel 20.

  Although the present invention has been described in detail, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention. In addition, the configurations described in the above embodiments and modifications can be appropriately combined as long as they do not contradict each other.

DESCRIPTION OF SYMBOLS 10 Wire harness module 20 Foamed resin panel 21 Recessed part 30 Wire harness 31 Electric wire part 33 Connector part 40 Cover member 51,53 Electrical component etc. 95 Floor locker part

Claims (3)

A wire harness module mounted on a vehicle,
A plate-like foamed resin panel laid on the interior floor;
A wire harness housed in a recess formed on the surface of the foamed resin panel;
A cover member that is made of a fiber-reinforced thermoplastic resin that is thermally welded to the foamed resin panel, and that covers the opening of the recess in which the wire harness is housed;
A wire harness module. The wire harness module according to claim 1,
The wire harness module in which the said cover member is formed only in the one part area | region in alignment with the said recessed part in the said foamed resin panel. In the wire harness module according to claim 1 or 2,
The wire harness module in which the said recessed part has a part extended diagonally with respect to the front-back direction of the said vehicle.

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