JPS6030084Y2 - Dust-proof structure of automobile back door - Google Patents

Description

[Detailed description of the invention] This invention relates to a dustproof structure for a back door for an automobile.

Some automobiles with a back door are provided with a drip rail around the periphery of the back door, as shown in Japanese Utility Model Application Publication No. 55-91709. A drip rail is installed to guide and drain water, and the drip rail is opened at an appropriate location inside the periphery of the back door.
Many of them form an air out left.

To explain the structure of the conventional example with reference to FIG. 1, a drip rail is formed around the side of the vehicle body 2 that is in contact with the peripheral edge 1a of the bank door 1, and an air outlet is provided in the back door 1 so as to open into the drip rail. 3 is provided so as to be located above the taillight 4.

This drip rail structure is provided to drain rainwater and the like and to exhaust the air inside the vehicle through the air outlet 3, but dust from outside the vehicle may instead flow into the interior of the vehicle from this drip rail.

The reason for this is thought to be as follows.

In other words, if a glass window such as a side door is left slightly open while the car is running, the air inside the car is sucked out through the opened gap.

Then, to supplement the sucked out air, air from outside the vehicle flows back from the drip rail that is in contact with the peripheral edge 1a of the back door 1, and flows into the interior of the vehicle via the air outlet 3.

However, the lower edge 1 of the peripheral edge 1a of the back door 1
b is located close to the bumper 5 and is in a place where dust kicked up from the rear wheels 6 is gathering.

Since the drip rail is formed along this lower edge 1b, the air 7 containing dust is sucked into the drip rail, becomes counterflowing air 8, and flows into the vehicle interior.

The present invention was devised in order to prevent the occurrence of such problems, and the air outlet opening in the drip rail is provided with an air vent located below the air outlet to block the drip rail and to act as a buffer when the back door is closed. A stopper is provided.

2 and 3 show an embodiment of the present invention, in which a stopper is further provided in addition to the structure of the conventional example explained in FIG. 1.

That is, a drip rail 2a is formed on the side of the vehicle body 2 that is in contact with the peripheral edge 1a of the back door 1, and an air outlet 3 that opens into the drip rail 2a is located above the tail light 4.

As shown in FIG.
The drip rail 2a is arranged around the weather strip 10 provided on the periphery 2b of the opening.

The drip rail 2a is formed to detour around the shoulder of the tail light 4, and in this embodiment, the drip rail 2a
A stopper 11 for closing the taillight 4 is provided directly above the taillight 4.

The stopper 11 is made of rubber material, etc., and is attached to the vehicle body 2 with a mounting screw 12.
The end portion 11a of the stopper 11 is inserted between the wall surface of the drip rail 2a and the weather strip 10 so as to come into contact with them.

Further, the shoulder portion 11b of the stopper 11 is adapted to come into contact with the back door 1 when it is closed.

Since the stopper 11 is provided below the air outlet 3, dust entering the drip rail 2a from the lower edge 1b of the bank door 1 is blocked by the stopper 11 and does not flow upward.

That is, the air that flows backward from the lower edge 1b as described in the conventional example shown in FIG. 1 does not flow, and is therefore prevented from flowing into the vehicle from the air outlet 3.

As mentioned above, this invention is equipped with a stopper that prevents dust-laden air from flowing into the car from the air outlet of the back door and also serves as a buffer when the bank door is closed. Despite its simple structure, it has great effects.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the rear of an automobile, explaining the structure of a conventional example;
FIG. 2 is a perspective view showing an embodiment of the present invention with the back door opened, and FIG. 3 is an enlarged sectional view taken along line A--A in FIG. 2. 1... Back door, 1a... Periphery,
1b...Lower edge, 2...Vehicle body, 2a.
...Drip rail, 2b...Opening periphery, 3...Air outlet, 4...
Tail light, 5... Bumper, 6... Rear wheel,
7... Air containing dust, 8... Air flowing back, 9... Weather stripping, 10...
... Weather strip, 11 ... Stopper, 11a ... End part, 11b ... Shoulder part,
12...Mounting screw.

Claims (1)

[Scope of utility model registration request] A drip rail is formed on the vehicle body side facing the peripheral edge of the back door, and the back door is provided with an air outlet that opens into the drip rail, and a stopper is provided below the air outlet to close the drip rail. A dustproof structure for an automobile back door characterized by: