JP3285128B2 - Wire harness insertion structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness insertion structure capable of smoothly mounting a box through which a wire harness is inserted to a panel and preventing intrusion of water droplets and the like into the panel.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional wire harness insertion structure. In this structure, a door-side wire harness 31 is passed through a center pillar of an automobile, and a connector 32 of the wire harness 31 is connected to a dash-side wire harness (not shown) on the indoor side.

Openings 35 and 36 are formed in a pillar outer panel 33 and a pillar inner panel 34 which constitute a center pillar.
Are provided, and the opening 35 of the pillar outer panel 33 is provided.
Then, the connector 32 of the door-side wire harness 31 is inserted into the room through the opening 36 of the pillar inner panel 34. This operation is performed at the same time when the automobile door on which the door-side wire harness 31 is routed is assembled to the vehicle body.

A waterproof grommet 37 made of rubber is mounted on the door-side wire harness 31, and waterproofing is achieved by fitting a flange portion 38 of the grommet 37 into an opening 35 of the pillar outer panel 33.

However, in the above-described conventional structure, when the wire harness 31 is inserted into the indoor side, the connector 32 side has its own weight as shown by a chain line, and the pillar outer panel 33 has a weight.
In some cases, it may fall into the gap 39 between the inner panel 34 and the pillar inner panel 34. In this case, when fitting the grommet 38, the drop on the connector 32 side cannot be recognized, so that
The connector must be taken out from the pillar inner panel side to remove the connector, or the grommet must be removed and reattached, which is very troublesome.

To solve this problem, a wire harness insertion structure as shown in FIG. 6 has been proposed. In this structure, a rectangular tubular box 42 is fitted into the opening 41 of the pillar inner panel 40 from the indoor side, and the pillar outer panel 43
The door side wire harness 4 is inserted into the box 42 from the opening 44 of the door.
5 through which the connector 46 side is led out to the room side.

[0007] A connector block 47 is fixed to the pillar inner panel 40, and a plurality of connectors 49 of a dash-side wire harness 48 are mounted on the connector block 47. The connector 46 of the door-side wire harness 45 is connected to the connector 49 of the dash-side wire harness 48.

However, in this structure, when the rectangular cylindrical box 42 is fitted into the rectangular opening 41 of the pillar inner panel 40, the box 42 is rectangular. There was a problem that the workability was troublesome. Further, water droplets 50 due to dew condensation or the like generated between the pillar outer panel 43 and the pillar inner panel 40 enter the room from the gap between the box 42 and the opening 41 of the pillar inner panel 40 as shown by an arrow C, Box 42 as shown by the arrow D
There is also a concern that the vehicle may enter the room from the front end side opening 51 along the lower wall 52.

[0009]

SUMMARY OF THE INVENTION In view of the above points, the present invention not only allows the wire harness to be reliably inserted from the outer panel to the inner panel with good workability, but also allows the rectangular cylindrical box to be inserted into the inner panel. It can be easily fitted into the opening,
Moreover, an object of the present invention is to provide a wire harness insertion structure that can surely prevent water droplets, dust and the like from entering the indoor side.

[0010]

To achieve the above object of the Invention The present invention is a rectangular cylindrical box body openings of the inner panel
Inserted, the flange of the box abuts on the inner panel
And a connector is provided in the box from the opening of the outer panel.
In the wire harness insertion structure that the wire harness is inserted, the box body each have an upper and lower walls inclined downwards, the outer surface of the inclined lower wall the In'napa
Acting as a guide for dropping into the opening of the
The inclination angle of the lower wall is set smaller than the inclination angle of said top wall,
From the vertical distance on the flange side between the upper wall and the lower wall
The vertical distance on the tip side is short, and the inner panel
It is characterized in that the box is easily inserted into the opening . Said
The tip side of the flange is gradually tapered,
Flexible seal lip that adheres to the inner panel
Is also effective .

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show an embodiment of a wire harness insertion structure according to the present invention.

In this structure, a rectangular cylindrical box body 5 having an upper wall 3 and a lower wall 4 inclined in a tapered shape is fitted into an opening 2 of a pillar inner panel 1 as shown in FIG. is there. The opening 7 of the pillar outer panel 6 is located slightly below the opening 2 of the pillar inner panel 1 and corresponds to the inclination of the box 5.

The box body 5 is integrally formed of a synthetic resin. As shown in FIGS. 2 and 3, a sealing lip 9 for waterproofing which is in close contact with the pillar inner panel 1 is provided on the base end side of the cylindrical wall portion 8. It has a combined flange 10.

The cylindrical wall portion 8 has the upper wall 3 inclined downward and tapered greatly, the lower wall 4 inclined downward and tapered slightly, and a vertical wall connecting the upper wall 3 and the lower wall 4. And both side walls 11. Angle of inclination θ of upper wall 3
₁ is larger than the inclination angle θ ₂ of the lower wall 4, and each inclination angle θ ₁ ,
theta ₂ are set in a range without the pull direction and the ejection taper of the resin molding die problem. The inclination angles θ ₁ and θ ₂ are angles with respect to the horizontal lines a and b.

Lock projections 12,12 for the pillar inner panel 1 are formed at the bases of the upper and lower walls 3,4. The locking projections 12 are more than one on each wall 3,4,
Preferably, two are provided, and the box body 5 is fixed to the pillar inner panel 1 without rattling. The lock projection 12 has an inclined guide surface 12a and a vertical contact surface 12b, and the inclined guide surface 12a smoothly passes over the pillar inner panel 1, and the vertical contact surface 12b is located between the pillar inner panel 1 and the flange 10. Hold 1 firmly.

The flange 10 is formed of a synthetic resin integrally with the cylindrical wall portion 8 and has the flexible sealing lip 9 on the tip side (outer peripheral side). The seal lip 9 is formed to be tapered and thinner toward the tip of the flange 10,
It is bent slightly in a V-shape toward the pillar inner panel 1 and has elasticity in the pillar inner panel joining direction (perpendicular direction).

As shown in FIG. 1, the box 5 is connected to the pillar inner panel 1.
At the same time, the seal lip 9 firmly adheres to the indoor side surface 1a of the pillar inner panel 1 by its elastic force.

Water droplets 13 and debris caused by dew condensation and the like generated between the pillar inner panel 1 and the pillar outer panel 6 fall onto the upper wall 3 and quickly flow along the inclined surface 3a of the upper wall 3 to lower the pillar. Fall to the side. Therefore, the water droplet 13 does not reach the flange 10 side, and the pillar inner panel 1
The water droplets 13 do not intrude into the room from the opening 2.
Further, since the water droplet 13 rushes out of the tip of the upper wall 3, it does not hang back into the box 5.

Even if water drops or the like enter the opening 2 of the pillar inner panel 1, the water drops or the like are blocked by the seal lip 9 of the flange 10 and are prevented from entering the room. The seal lip 9 has a simple structure with an integral flange, and can be easily manufactured by resin molding.
Ideal for simple waterproofing.

The inner surface (inclined surface) 4 of the lower wall 4 of the box 5
Even when the water droplet 13 adheres to a, the lower wall 4 is slightly inclined downward, so that the water droplet 13 flows to the tip side of the lower wall 4 along the inclined surface 4a and falls below the pillar. A vertical turning portion 14 is bent at the tip of the upper wall 3 to prevent the water droplet 13 from dripping into the inside of the box.

A door-side wire harness 16 is inserted into the box 5 from the opening 15 through the opening 7 of the pillar outer panel 6. The door-side wire harness 16 is fixed to a vehicle door (not shown). When the door is assembled, the door is brought closer to the pillar, and the wire harness 16 is inserted into the box 5 at the same time.
The connector 17 of the wire harness 16 is provided on the inclined surface 4 of the lower wall 4.
It is inserted slightly upward along a. Grommets 18 of the wire harness 16 are provided in the openings 7 of the pillar outer panel 6.
Is fitted.

The shape of the box and its function and effect will be described below with reference to FIGS. 4 (a) to 4 (c). When the inclination angles θ ₁ , θ ₂ of the upper wall 22 and the lower wall 23 of the box body 21 are the same as shown in FIG. Since there are holes 2 in the pillar inner panel 1 (FIG. 1)
Although the insertability of the box 21 into the box body and the insertability of the wire harness into the box body 21 are the same as those of the related art, the upper wall 3 and the lower wall 4
As the water drops fall outward along the slope of, the waterproofness is improved.

As shown in FIG. 4B, the inclination angle θ of the upper wall 25 is
_When the inclination angle θ ₂ of the lower wall 26 is larger than _1, the distance H between the upper and lower walls 25 and 26 at the tip of the box 24 becomes wider and wider, so that the box 24
Is extremely poor. On the other hand, since the entrance 29 of the box 24 is wide, the insertability of the wire harness is improved.
Further, since the upper and lower walls 25 and 26 are inclined, the waterproofness is also improved.

Further, as shown in FIG.
Is formed horizontally (zero inclination angle), the space H between the upper and lower walls is narrow, so that the box 27
Although the insertability of the wire harness is improved, the waterproofness deteriorates due to the penetration of water droplets from the lower wall 28, and the insertability of the wire harness deteriorates because the entrance 30 of the box 27 is narrow.

The box 5 of the present embodiment (FIG. 2) has an upper wall 3 and a lower wall 4.
Is the base side (flange side) H₁More tip side H_Twoof
Panel because it is narrower, so-called tapered
1 has good insertability into the opening 2. Also, the lower wall 4 is slightly downward
The outer surface of the lower wall 4
b acts as a drop guide and fits into the opening 2
Good quality. Also, the inclination angle θ of the lower wall 4_TwoMinimize
And the inclination angle θ of the upper wall 3 ₁By making it smaller than
Entrance (opening) 15 is widely secured, and wire harness 16
Insertability is ensured. The upper and lower walls 3 and 4 are both inclined.
By doing so, the waterproofness is also improved.

[0026]

As described above , according to the first aspect of the present invention , the box body is tapered in the vertical direction.
And the outer surface of the inclined lower wall is
Since the box acts as a drop-in guide , the box can be easily and smoothly inserted into the opening of the inner panel, thereby improving the workability of assembling the box. In addition, since the upper wall is inclined downward, water droplets that have fallen on the upper wall quickly fall to the outside along the upper wall, thereby preventing water droplets from entering the opening of the inner panel. . Even if the water drops fall on the upper surface of the lower wall, the water drops are discharged to the outside along the slope of the lower wall, so that the water drops do not enter the opening. In addition, since the lower wall is inclined, a wide entrance of the box is ensured, and insertability of the wire harness into the box is ensured. Also,
According to the second aspect of the present invention , since the seal lip elastically adheres to the inner panel, intrusion of water droplets from the opening of the inner panel is prevented.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a wire harness insertion structure according to the present invention.

FIG. 2 is a longitudinal sectional view showing a box.

FIG. 3 is a perspective view showing the box.

FIGS. 4A to 4C are longitudinal sectional views showing other shapes of the box for explaining the effect of the present embodiment.

FIG. 5 is a longitudinal sectional view showing one conventional example.

FIG. 6 is a longitudinal sectional view showing another conventional example.

[Explanation of symbols]

1 inner panel 2,7 opening 3 upper wall 4 a lower wall 5 the box body 6 the outer panel 9 sealing lip 10 flange 16 wire harness theta _1, theta ₂ tilt angle

Claims (2)

(57) [Claims] 1. A rectangular tubular box body openings of the inner panel
Inserted, the flange of the box abuts on the inner panel
And a connector is provided in the box from the opening of the outer panel.
In the wire harness insertion structure that the wire harness is inserted, the box body each have an upper and lower walls inclined downwards, the outer surface of the inclined lower wall openings of the inner panel
Acts as a guide darken to, and the inclination angle of the lower wall is set smaller than the inclination angle of said upper wall, said upper wall and said
Tip that is more inclined than the vertical distance between the flange and the lower wall
The vertical distance of the inner panel is short,
A wire harness insertion structure, characterized in that the box is easily inserted. 2. A front end side of said flange is gradually tapered.
A flexible sheet that is thinned and adheres to the inner panel
The wire harness insertion structure according to claim 1, wherein the wire harness insertion structure is a rlip .