JPH0930342A - Grommet - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a grommet capable of reliably draining condensed water without dropping it on a wire harness even when the amount of condensed water is large. A grommet (100) of the present invention has a drain wall (50) extending in a direction orthogonal to a panel when it is attached to a panel hole, so that it can be easily inserted into the panel hole. Then, when the tubular portion 20 is inserted into the panel hole, the abutment wall 40 is pressed by the panel and rotated about the thin portion 30 as a fulcrum. Thereby, the contact wall 40
The drainage wall 50 continuously provided with the contact wall 40 rotates about the thin portion 30 as a fulcrum, and is displaced in a standing state so as to extend parallel to the back surface of the panel. Therefore,
When the drainage wall 50 is inserted into the panel hole, it does not interfere with the edge of the panel, and the height of the drainage wall 50 can be set sufficiently large, so that the amount of water drops flowing down the back surface of the panel is large. Can be surely drained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention protects a wire harness that is inserted through a panel hole from abutting against the peripheral edge of the panel hole so as not to be damaged, and prevents water or the like from entering the inside of the panel through a gap between the panel hole and the wire harness. The present invention relates to a grommet structure that closes a panel hole so that it does not enter.

[0002]

2. Description of the Related Art In recent years, automobiles are widely equipped with a power window for raising and lowering a window glass by a switch operation, an automatic door lock for locking or unlocking a door lock, and the like. A wire harness is installed between the vehicle body side and the door side in order to control the operation of these devices or to supply electric power to an electric motor or an electromagnetic solenoid provided in a door panel. Therefore, these wire harnesses are taken out from the vehicle through a panel hole penetrating the pillar panel on the vehicle body side and then drawn into the door panel through the panel hole penetrating the door panel.

The wire harness extending between the pillar panel and the door panel may be sandwiched between the pillar and the door when the door is opened or closed, or the insulation coating may be damaged by rubbing against the peripheral edge of the panel hole. It needs to be properly supported and protected to prevent it. Further, it is necessary to waterproof the rainwater so that the rainwater entering through the panel holes flows along the wire harness and impairs the electrical contact of the wire harness.

Therefore, the grommet body 1 as shown in FIG. 5 is fitted onto the wire harness 4. The grommet body 1 supports and protects the wire harness 4 extending between the pillar panel 2 and the door panel 3, and has a bellows part 5 formed of a rubber material and a panel hole penetrating the pillar panel 2. 6, a vehicle body side grommet 7 and a door side grommet 9 fitted in a panel hole 8 penetrating the door panel 3.

As a result, the wire harness 4 inserted into the grommet body 1 is not sandwiched between the pillar panel 2 and the door panel 3 or rubbed against the peripheral edges of the panel holes 6 and 8. The rainwater and muddy water are appropriately protected from entering inside the pillar panel 2 and the door panel 3.

[0006]

By the way, air can freely flow in and out of the inside of the pillar panel 2 and the door panel 3. Therefore, when the temperature decreases, the moisture contained in the air in the pillar panel 2 or the door panel 3 may condense, and may flow down along the back surface of the pillar panel 2 or the door panel 3. Therefore, if these condensed water enters the inside of the grommet main body 1 described above, there is a concern that the electrical contact of the wire harness may be hindered.

Therefore, as shown in FIG. 6, the outer peripheral surface 11 of the inner member 10 of the grommet 7 is waterproof to prevent the condensed water W flowing down along the back surface of the pillar panel 2 from dropping toward the connector 12. The wall 13 is erected. As a result, the condensed water W is guided by the waterproof wall 13 and flows down along the outer periphery of the inner member 10 and falls without reaching the wire harness 4 as indicated by an arrow A in FIG.

However, the outer diameter D0 of the waterproof wall 13 is
Must be smaller than the inner diameter of the panel hole 6. Also, the outer diameter D1 of the inner member 10 must be reduced in order to increase the height H of the waterproof wall 13, but the outer diameter D1 must be reduced in order to accommodate the connector 13 of the wire harness 4. Is limited. Furthermore, when the outer diameter D1 of the inner member 10 is reduced, a gap is created between the outer peripheral surface 11 of the inner member 10 and the peripheral edge of the panel hole 6, so that the grommet 7 is held coaxially with the panel hole 6. Positioning projection 14 on outer peripheral surface 11
Need to project.

Therefore, in the conventional grommet 7, not only the height H of the waterproof wall 13 cannot be made large, but also the downward flow of the condensed water W along the outer peripheral surface 11 is blocked by the positioning projection 14. When the amount of the condensed water W is large, the condensed water W may overflow to get over the waterproof wall 13 and drop toward the connector 12 of the wire harness 4 as indicated by an arrow B in FIG.

An object of the present invention is to eliminate the above-mentioned conventional problems, and a grommet capable of reliably discharging condensed water without dropping it on a wire harness even when the amount of condensed water is large. To provide.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to protect a wire harness from being damaged by abutting the periphery of a panel hole for inserting a wire harness, which is a bundle of a plurality of electric wires. In the grommet that closes the panel hole so that water and the like does not enter the inside of the panel through the gap between the wire harness and the wire harness, the tubular portion that is inserted into the panel hole and the thin portion that extends from the tip of the tubular portion are interposed. A contact wall that rotates when it is inserted into the panel hole and a drainage wall that is connected to the contact wall and that displaces upright along the back surface of the panel as the contact wall rotates. It can be achieved by a grommet characterized in that it is provided with.

Further, the above object can be achieved by forming a trough part for guiding the collected water drops so that the collected water drops flow toward the lateral side of the tubular part. .

[0013]

In the grommet having the above structure according to the present invention, the grommet is rotated when it is inserted into the panel hole through the tubular portion which is inserted into the panel hole and the thin wall portion which is extended from the tip of the tubular portion. And a drainage wall that is connected to the abutment wall and that is displaced along the back surface of the panel to a standing state as the abutment wall rotates.

Therefore, when the grommet is attached to the panel hole, the drain wall extends in the direction orthogonal to the panel, so that the grommet can be easily inserted into the panel hole. Then, when the tubular portion of the grommet is inserted into the panel hole, the abutment wall abuts the panel surface near the opening edge of the panel hole, so that the thin portion rotates about the fulcrum. As a result, the drainage wall connected to the abutment wall rotates together with the abutment wall about the thin portion as a fulcrum and is displaced along the back surface of the panel to a standing state. Therefore, the height of the drainage wall can be set sufficiently large, and even if the amount of water drops flowing down the back surface of the panel is large, the drainage can be reliably performed.

Further, since the contact wall, the drainage wall, and the panel form a gutter, it is possible to guide the collected water droplets to surely flow toward the side of the tubular portion.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the grommet of the present invention will be described in detail below with reference to FIGS. 1 is a perspective view showing a main part of the grommet of the present invention, FIG. 2 is a sectional view showing a state of being inserted into a panel hole in FIG. 1, and FIG. 3 is a sectional view showing a state of being fixed to the panel in FIG.
FIG. 4 is a perspective view showing a state of the grommet in FIG.

As shown in FIGS. 1 and 2, the grommet 100 of the present embodiment has a tubular portion 20 inserted into a panel hole 6 penetrating the panel 2 and a tip portion of the tubular portion 20. A pair of upper and lower abutment walls 40 supported by the extended thin portion 30 and a drainage wall 50 continuous from the abutment walls 40 are provided.

The tubular portion 20 includes a pair of upper and lower lateral walls 21,
22 and a pair of left and right vertical walls 23, 24 is a rectangular tubular body that is inserted into the panel hole 6 coaxially with the wire harness. At the end of the tubular portion 20 on the grommet body 1 side, a flange 25 to which the end of the grommet body 1 is fitted is provided upright. Also, the vertical wall 23,
On the outer surface of 24, a pair of locking arms 26 that is locked to the panel 2 so as to prevent the tubular portion 20 from coming out of the panel hole 6 is provided upright. Furthermore, stoppers 27, which will be described later, are provided on the outer surfaces of the lateral walls 21, 22 so as to project therefrom.

The thin portion 30 is integrally formed as a thin vertical wall extending from the outer peripheral surface of the distal end of the tubular portion 20 in a direction perpendicular to the surfaces of the lateral walls 21 and 22. As a result, the thin portion 30 is bendable, and the contact wall 40 described later can be swingably supported.

The abutment wall 40 is integrally formed as a thick vertical wall extending from the tip of the thin wall portion 30 in a direction perpendicular to the surfaces of the horizontal walls 21 and 22. Thereby, when the tubular portion 20 is inserted into the panel hole 6, the front surface 41 thereof comes into contact with the outer surface 2 a of the panel 2.

The drainage wall 50 extends from the pair of abutting walls 40 in parallel with the lateral walls 21 and 22 and extends in the direction away from the tubular portion 20, and the vertical walls 23 from both ends of the side wall 51. A pair of drainage walls 5 parallel to 24
A pair of second vertical walls 52, 5 extending toward the other side of 0
And 3. The dimensions of each part of the drainage wall 50 are set so that they can be inserted into the panel hole 6.

Next, the operation of fitting the grommet of the present embodiment configured as described above into the panel hole will be described. Grommet 100 as shown in FIGS.
In the state before attaching to the panel hole 6, the pair of abutting walls 40 are upright so as to face the outer surface 2 a of the panel 2. On the other hand, the pair of drainage walls 50 are in a state of extending in a direction orthogonal to the panel 2 and can be easily inserted into the panel hole 6.

As shown in FIG. 2, when the pair of drainage walls 50 are inserted into the panel holes 6, the pair of abutment walls 40 are closed.
The outer surface 2a of the. In this state, when the grommet 100 is pressed in the direction of arrow C to press the contact wall 40 against the panel 2, the thin portion 30 is curved as shown in FIG.
The contact wall 40 rotates about the thin portion 30 as a fulcrum. Then, the abutting wall 40 is pressed by the peripheral edge of the panel hole 6 and is displaced so as to be parallel to the lateral walls 21 and 22 of the tubular portion 20, so that the tubular portion 20 can be inserted into the panel hole 6. The contact wall 40 can be formed on the periphery of the panel hole 6 and the stopper 27.
It is clamped and fixed by.

When the tubular portion 20 is further inserted into the panel hole 6 as shown in FIGS. 3 and 4, the locking arms 26 provided on the vertical walls 23 and 24 of the tubular portion 20 are released. It engages with the panel 2 and is locked so that the tubular portion 20 does not come out of the panel hole 6. At the same time, the waterproof lips 1a and 1b provided on the end surface of the grommet body 1 which are fitted onto the flange 25 of the tubular portion 20 are in close contact with the outer surface 2a of the panel 2.

On the other hand, the drainage wall 50 is displaced to the upright state with the rotation of the contact wall 40, and the side wall 51 thereof is displaced to be parallel to the back surface 2b of the panel 2. In this state, the water droplets W that flow down along the back surface 2b of the panel 2 are not drained by the drain wall
0 side wall 51, abutting wall 40 and back surface 2b of panel 2
After being collected in the gutter part 60 formed by and, it flows down to the side of the tubular part 20 as shown by an arrow D in FIG. Further, some of the water droplets W collected in the trough portion 60 flow along the lower edges of the vertical walls 52 and 53 of the drainage wall and fall to the side of the tubular portion 20. As a result, it is possible to prevent the water droplets W flowing down along the back surface 2b of the panel 2 from entering the inside of the tubular portion 20.

That is, the grommet 10 of the present embodiment.
When 0 is inserted into the panel hole 6, the drainage wall 50 extends in a direction orthogonal to the panel 2 and therefore does not interfere with the peripheral edge of the panel hole 6. As a result, the height H of the drainage wall can be set sufficiently large, so that the side wall 51 of the drainage wall 50 and the contact wall 40 and the rear surface 2 of the panel 2 can be set.
It is possible to make the depth of the trough portion 60 formed by b sufficiently deep. Therefore, even if the amount of water drops flowing down along the panel 2 is large, it can be reliably discharged to the side of the tubular portion 20.

It is needless to say that the grommet of the present invention is not limited to the above-mentioned embodiment and various modifications can be made based on the gist of the present invention. For example, in the above-described embodiment, the drainage wall 50 is provided on the pair of upper and lower horizontal walls 21 and 22 of the tubular portion 20, but may be provided on the pair of vertical walls 23 and 24 of the tubular portion 20. You can In this case, the locking arm 26 is attached to the vertical wall 2
The vertical walls 23, 2 cannot be provided on the vertical walls 23, 2
It is possible to provide a locking arm on the abutment wall provided at 4.

[0028]

As described above, the grommet of the present invention has a tubular portion that is inserted into the panel hole and a thin portion that extends from the tip of the tubular portion when it is inserted into the panel hole. A contact wall that rotates is provided, and a drainage wall that is connected to the contact wall and that is displaced along the back surface of the panel to a standing state as the contact wall rotates is provided.

Therefore, when this grommet is attached to the panel hole, the drainage wall is rotationally displaced from the state orthogonal to the panel, and when it is completely attached to the panel hole, it is erected parallel to the panel. It is displaced to the state where it did. Accordingly, the drainage wall does not interfere with the edge of the panel hole when it is attached to the panel hole, and the height of the drainage wall can be sufficiently secured. Therefore, even if the amount of water droplets is large, it is possible to reliably drain the water, and it is possible to prevent the water droplets from entering the inside of the grommet.

Further, since the contact wall, the drainage wall, and the panel form a trough portion that guides the collected water droplets so as to flow toward the side of the tubular portion, the water droplets can be reliably discharged from the tubular portion. Can lead to the side.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts showing an embodiment of a grommet of the present invention.

FIG. 2 is a cross-sectional view showing a state of being inserted into a panel hole in FIG.

FIG. 3 is a cross-sectional view showing a state of being fixed to the panel in FIG.

FIG. 4 is a perspective view showing a state of the grommet in FIG.

FIG. 5 is a partial cross-sectional view of a grommet in a conventional grommet body.

6 is a cross-sectional view showing a main part of the grommet in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grommet main body 2 Panel 4 Wire harness 6 Panel hole 12 Connector 20 Cylindrical part 21,22 Horizontal wall 26 Locking arm 30 Thin wall part 40 Abutment wall 50 Drainage wall 51 Side wall 52,53 Vertical wall 60 Gutter part 100 Grommet

Claims (2)

[Claims] 1. A wire hole is protected from being damaged by abutting the periphery of a panel hole through which the wire harness is inserted, and water or the like does not enter the inside of the panel through a gap between the panel hole and the wire harness. In the grommet that closes the panel hole as described above, the grommet is rotated when the grommet is inserted into the panel hole through the tubular portion that is inserted into the panel hole and the thin portion that extends from the tip of the tubular portion. And a drainage wall that is connected to the corresponding contact wall and that is displaced along the back surface of the panel so as to stand up along with the rotation of the contact wall. . 2. The abutment wall, the drainage wall, and the panel form a gutter that guides the collected water drops so as to flow toward the side of the tubular portion. Item 1. The grommet according to item 1.