JP4600088B2 - Wiring harness wiring structure for automobile doors - Google Patents

Description

  The present invention relates to a wiring structure for a wire harness for an automobile door, and more specifically, enables a wire harness to be routed between a door of a vehicle and a vehicle body without passing through a door-side panel. is there.

A wire harness routed to a door for an automobile is routed inside an outer panel and an inner panel of the door and pulled out to the vehicle body side.
For example, in the case of a back door 1 of a hatchback type automobile as shown in FIG. 8, a high-mount stop lamp, a wiper, a rear heating wire, a key switch are provided in an internal space between the outer panel 2 and the inner panel 3 constituting the door panel body. A wire harness W for supplying electric power to the cable is routed and pulled out to the roof panel 6 through a through hole 4 drilled in the inner panel 3. (Japanese Patent Laid-Open No. 2000-85491)

  In the back door 1, a wire harness W having an outer grommet 5 is attached by being penetrated through a through hole 4 formed in the inner panel 3. However, since the connector is connected to the tip of the wire harness, the work of penetrating the wire harness W through the through-hole 4 is troublesome and there is a problem that workability is lowered.

  The door panel composed of the outer panel 2 and the inner panel 3 is conventionally formed of a metal plate as in the case of the vehicle body panel. However, as disclosed in Japanese Patent Application Laid-Open No. 2004-9888, the moldability is recently increased. A panel made of resin has been proposed because of its excellent lightness and workability.

JP 2000-085491 A Japanese Patent Laid-Open No. 2004-9888

  The present invention has been made in view of the above problems, and in the case where the automobile door is made of a resin panel, the wire harness drawn from the door panel side to the vehicle body can be routed without passing through the through hole provided in the door panel. Thus, it makes it the subject to make wiring work of the wire harness for motor vehicle doors easy.

In order to solve the above-mentioned problems, the present invention is arranged in an internal space in which an outer panel and an inner panel of an automobile door are made of resin, and edges of the outer panel and the inner panel are fixed with an adhesive. The wiring structure of the wire harness that is routed and pulled out to the vehicle body side,
A notch for fitting the grommet is provided from the edge of the inner panel, and a grommet fixing rib protruding from the peripheral edge of the notch to the internal space is provided .
While the notch for fitting the grommet is concave and the grommet fixing rib is also concave,
Grommet sheathes the wire harness is provided with a square tubular portion whose upper surface is a hypotenuse, along with the outer peripheral surface of the grommet is fitted into the front Symbol notch, bottom and both sides of the grommet which projects from the cutout to the inner space side Is the first surface that is in close contact with the grommet fixing rib, the oblique side is the second surface that is in close contact with the inner surface of the outer panel,
The grommet is fitted into the notch, the wire harness is pulled out of the door from the grommet, the first surface of the grommet is fixed to the grommet fixing rib with an adhesive, and the second surface Is fixed to the inner surface of the outer panel with an adhesive, and a wiring structure for a wire harness for an automobile door is provided.

In the present invention, in the resin door panel, after the wire harness is routed between the outer panel and the inner panel, the periphery of the outer panel and the inner panel is fixed with an adhesive. It was made paying attention to the point which is integrated.
As described above, the wire harness is routed inside the inner panel before being bonded to the outer panel, and the grommet attached to the wire harness is passed through the inside of the grommet fixing rib and the fitting notch provided in the inner panel. It is inserted and fitted and pulled out of the door. That is, since the wire harness is not passed through the through-hole but only inserted into the notch from the opening edge, workability becomes extremely easy. After the grommet is fixed to the grommet fixing rib with an adhesive, the outer panel is put on the outer surface of the inner panel, and when the edges are fixed with the adhesive, the grommet is fixed to the inner surface of the outer panel.
Thus, when wiring work of the wire harness can be performed without so-called penetration, at that time, the entire outer peripheral surface of the grommet is fixed to the inner panel grommet fixing rib and the outer panel inner surface with an adhesive. The gap between the grommet and the door panel can be completely eliminated, and the water stop performance can be improved.
Moreover, the adhesive used for bonding the grommet fixing rib and the grommet, and the grommet and the outer panel is the same type of adhesive used for bonding the resin inner panel and the outer panel. Therefore, it is preferable that the use of the adhesive in the production line is unnecessary.

As described above , the notch for fitting the grommet has a concave shape, and the grommet fixing rib also has a concave shape, while the grommet includes a rectangular tube portion whose upper surface is an oblique side, and the oblique side of the rectangular tube portion. bottom and side surfaces with the top surface of the is fixed to the inner surface of the outer panel Ru is fixed to the grommet fixing rib.

Thus, by the side surface of the grommet and flat, with adhesion of the grommet fixing rib of the inner panel is facilitated by the oblique upper surface of the outer peripheral surface of the grommet, the shape of the outer panel In addition, adhesion to the outer panel can be facilitated .

A positioning rib may protrude from the inner peripheral surface of the grommet fixing rib, and the positioning rib may be fitted into a groove that is recessed in the outer peripheral surface of the rectangular tube portion of the grommet.
With this configuration, the grommet can be positioned and held at a normal position with respect to the inner panel, the adhesion work between the square tube portion and the grommet fixing rib can be facilitated, and the sealing performance can be improved.

  INDUSTRIAL APPLICABILITY The present invention is suitably used for a wire harness that is spanned from a back door hinged to a roof of an automobile door to the roof. That is, in a back door having an inner panel and an outer panel made of a resin product, the notch for fitting the grommet is provided at the upper edge of the inner panel, and the notch is provided at the upper edge of the inner panel so that the wire harness is pulled out of the door. The outer panel is fixed to the inner panel with an adhesive.

As described above, the present invention utilizes the point that the inner panel and the outer panel are fixed and integrated with an adhesive in an automobile having a door panel composed of an inner panel and an outer panel made of a resin molded product. The wire harness that passes through the inside of the inner panel and the outer panel can be pulled out from the door just by inserting the wire harness into the notch provided in the inner panel, and the wiring harness can be routed without being penetrated. The routing workability can be improved.
Furthermore, the grommet for the portion that passes through the grommet fixing ribs can be improved in water stopping performance because the entire outer peripheral surface is fixed to the grommet fixing ribs and the inner surface of the outer panel with an adhesive.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 to 5 show an embodiment of the present invention. As shown in FIG. 1, a wire harness 10 routed inside a back door 11 hinged to a roof 12 of a hatchback type automobile is connected to the roof panel of the vehicle body. Routed to 16.

  As shown in FIG. 2, the door panel 13 constituting the back door 11 includes an inner panel 14 and an outer panel 15 made of resin. As shown in FIGS. 5 (A) and 5 (B), the inner panel 14 and the outer panel 15 are configured such that the end edges 14a and 15a are fixed with an adhesive 40 and the internal space S is opened to be integrated. The wire harness 10 is routed in the internal space S before being fixed with an adhesive.

As shown in FIG. 3, the inner panel 14 is provided with a rectangular grommet fitting notch 17 that is recessed from the upper edge. From the peripheral edge 18 of the notch 17 for fitting this grommet, a recessed grommet fixing rib 20 having substantially the same shape as the notch 17 is projected into the internal space S.
On the inner surface of the grommet fixing rib 20, a positioning rib 22 made of a single continuous protrusion in the circumferential direction is provided.

  The grommet 31 that is externally mounted on the wire harness 10 is formed from rubber or elastomer, and as shown in FIG. 3, the wire harness 10 is formed into a rectangular tube shape, and a through hole 37 is formed in close contact with the wire harness 10 at the center thereof. It has.

The grommet 31 has an indoor side surface 34, an outdoor side surface 35, and an outer peripheral surface 36 sandwiched between both sides 34, 35. Both the indoor side surface 34 and the outdoor side surface 35 are flat.
The outer peripheral surface 36 includes four surfaces, that is, a bottom surface 36a, both side surfaces 36b and 36c, and an upper surface 36d. The bottom surface 36a and both side surfaces 36b and 36c are closely joined to the notch 17 and the grommet fixing ribs of the inner panel 14. The upper surface 36d is a second surface 36-2 bonded to the outer panel 15. The first surface 36-1 is provided with a guide groove 38 that is fitted into the positioning rib 22 projecting from the inner surface of the grommet fixing rib 20. The second surface 36-2 is a hypotenuse that is inclined downward toward the inner space S side in correspondence with the inner surface shape of the opposing outer panel 15.

  In addition, a tape winding tongue piece 32 protruding from the peripheral edge of the through hole 37 is provided on the indoor side surface 34 of the grommet 31, and the tape winding tongue piece 32 is taped around the wire harness 10 drawn out from the through hole 37 to be grommeted. 31 is attached to the wire harness 10.

Below, the wiring work of the wire harness which pulls out the wire harness 10 wired inside the back door which consists of resin-made inner panels 14 and the outer panel 15 to the vehicle body side is demonstrated.
First, the wire harness 10 is routed on the outer panel joining side of the inner panel 14 in a state where the wire harness 10 is preliminarily taped and attached to the tape winding tongue piece 32 of the grommet 31.
Next, as shown in FIGS. 5A and 5B, an adhesive 40 is applied to the inner surface of the grommet fixing rib 20 of the inner panel 14.
Next, as shown in FIGS. 3 to 5, the grommet 31 is inserted through the upper end opening of the grommet fixing rib 20 and the upper end opening of the notch 17. At that time, the groove 38 of the grommet 31 is inserted while being fitted to the positioning rib 22 of the grommet fixing rib.
When the bottom surface 36a and both side surfaces 36b, 36c of the grommet 31 are joined to the inner surface of the grommet fixing rib 20, the grommet 31 is fitted inside the notch 17 and the grommet fixing rib 20, as shown in FIG. The bottom face 36 a and both side faces 36 b and 36 c of the grommet are fixed to the grommet fixing rib 20 via the adhesive 40.
Finally, as shown in FIGS. 5A and 5B, the outer panel 15 is covered with the inner panel 14, and the edges 14a and 15a are fixed to each other with the adhesive 40, but before that, the grommet 31 is inclined. The adhesive 40 is applied to the upper surface 36 d, and the upper surface 36 d of the grommet 31 is fixed to the inner surface of the outer panel 15 via the adhesive 40 when the inner panel 14 is put on the outer panel 15.
Thereby, the entire outer peripheral surface of the grommet 31 is fixed to the inner surface of the grommet fixing rib 20 on the inner panel 14 side and the outer panel 15 via the adhesive 40.

  In this way, the wire harness 10 simply pulls the outer grommet 31 from the upper end opening into the notch 17 and the grommet fixing rib 20 of the inner panel 14 and pulls the wire harness 10 routed inside the door to the outside of the door. Can do. Therefore, unlike the prior art, the operation of passing through the through hole can be eliminated, and the workability is improved.

  Further, since the entire periphery of the grommet 31 is fixed to the inner panel 14 or the outer panel 15 with the adhesive 40, high waterproofness can be ensured. At this time, as the adhesive 40, the same adhesive as the adhesive 40 that joins the inner panel 14 and the outer panel 15 can be used.

  Further, as shown in FIG. 4B, the groove 38 formed in the grommet 31 and the positioning rib 22 formed in the grommet fixing rib 20 can be fitted to each other, whereby the axial direction of the grommet 31 can be defined and the grommet can be defined. Can always be inserted at an accurate angle. Thereby, the outer peripheral surface of the grommet 31 can be brought into close contact with the inner surface of the grommet fixing rib 20 and the inner surface of the outer panel 15, and the entire outer peripheral surface of the grommet 31 can be contacted with the inner panel 14 side and the outer panel through the adhesive 40 without any gaps. Can be fixed to the 15 side.

  Furthermore, since the upper surface 36d of the grommet 31 is a hypotenuse, the grommet 31 can be sandwiched and fixed between the outer panel 15 and the inner panel 14 as shown in FIG. Can be sure.

  FIG. 6 shows a first modification. In the first modification, grooves are not provided on both side surfaces and the bottom surface of the grommet 31, and no positioning rib is provided on the grommet fixing rib 20 side. Also in this configuration, when the front end surface of the grommet 31 is aligned with the outer surface of the inner panel 14 and the grommet 31 is inserted into the notch 17 and the grommet fixing rib 20 from the upper end opening, the grommet 31 can be fixed to the normal position via the adhesive.

FIG. 7 shows a reference modification. In the reference modification, the notch 17 for fitting the grommet is formed by notching a U-shape from the upper end edge of the inner panel 14, and the grommet fixing rib 20 protruding from the peripheral edge 18 of the notch 17 is also U-shaped in cross section. . In addition, the shape of the outer peripheral surface 36 of the grommet 31 corresponds to the shape of the grommet fixing rib 20, and the first surface 36-1 formed by the bottom surface 36 a and the both side surfaces 36 b and 36 c is continuous with a U-shaped cross section. Curved surface.

Since the other configurations of the first modified example and the reference modified example are the same as those of the embodiment, the same reference numerals are given. In addition, the grommet mounting operation is the same as that of the embodiment, has the same effect, can easily pull out the wire harness from the door panel side without penetrating, and has excellent water stop performance. be able to.

It is a fragmentary perspective view which shows the motor vehicle rear part which concerns on embodiment of this invention. It is a disassembled perspective view of the back door shown in FIG. It is an expansion perspective view of the principal part and grommet of an inner panel shown in FIG. The state which attached the grommet to the inner panel is shown, (A) is a perspective view, (B) is a front view. It is explanatory drawing which shows the attachment structure of a grommet, (A) shows the state before attachment, (B) is a figure which shows the state after attachment. It is an expansion perspective view which shows the principal part and grommet of the inner panel which concern on the 1st modification of this invention. It is an expansion perspective view which shows the principal part and grommet of the inner panel which concern on the reference modification of this invention. It is a figure of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Wire harness 14 Inner panel 15 Outer panel 17 Grommet fitting notch 20 Grommet fixation rib 22 Positioning rib 31 Grommet 36 Outer peripheral surface 36-1 First surface 36-2 Second surface 38 Groove 40 Adhesive

Claims (3)

Wire harness that is routed in an internal space formed by the outer panel and inner panel of an automobile door being made of resin, and the edges of the outer panel and inner panel are fixed with an adhesive, and pulled out to the vehicle body side The routing structure of
A notch for fitting the grommet is provided from the edge of the inner panel, and a grommet fixing rib protruding from the peripheral edge of the notch to the internal space is provided ,
While the notch for fitting the grommet is concave and the grommet fixing rib is also concave,
Grommet sheathes the wire harness is provided with a square tubular portion whose upper surface is a hypotenuse, along with the outer peripheral surface of the grommet is fitted into the front Symbol notch, bottom and both sides of the grommet which projects from the cutout to the inner space side Is the first surface that is in close contact with the grommet fixing rib, the oblique side is the second surface that is in close contact with the inner surface of the outer panel,
The grommet is fitted into the notch, the wire harness is pulled out of the door from the grommet, the first surface of the grommet is fixed to the grommet fixing rib with an adhesive, and the second surface A wire harness wiring structure for an automobile door, characterized in that is fixed to the inner surface of the outer panel with an adhesive. The automobile door wire according to claim 1 , wherein a positioning rib projects from an inner peripheral surface of the grommet fixing rib, and the positioning rib is fitted into a groove recessed in an outer peripheral surface of the rectangular tube portion of the grommet. Harness wiring structure. The automobile door comprises a back door hinged to a roof, the grommet fitting notch is provided at the upper edge of the inner panel of the back door, and the wire harness is drawn out from the upper edge of the inner panel and the outer panel The wiring structure of the wire harness for motor vehicle doors of Claim 1 or Claim 2 routed to the roof panel of a vehicle body .

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