JPH0123855Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an outside air introduction duct device that prevents water and dust from entering an air cleaner.

Automobile air cleaners are designed to prevent dust from being included in the air required for combustion, but outside air intake ducts should be arranged to prevent dust from entering the air cleaner as much as possible, and also to prevent water from entering the air cleaner. It should be done as follows. Particularly when driving in the rain or when driving across a crossing or in a ditch, water droplets tend to enter the vehicle, which can cause water hammer or seizure damage to the engine.

FIG. 1 shows a general example of a conventional outside air introduction duct device. In the diagram, 1 is the air cleaner, 2 is the duct, and 3 is the air cleaner.
is the lamp support panel, 4 is the head lamp, 5 is the lamp support panel.
is the bonnet, and 6 is the bumper. In this conventional example, the duct 2 is attached to the lamp support panel 3 by a support 7, opens forward in the engine room, and is arranged horizontally. With this structure, there is insufficient head for the infiltration channel, and it cannot be said that it is sufficient to prevent the intrusion of water and dust, especially when driving in the rain or when driving across a crossing or in a ditch.

SUMMARY OF THE INVENTION In view of the above-mentioned prior art, an object of the present invention is to provide an outside air introduction duct device that effectively prevents water and dust from entering. The purpose of this is to arrange the outside air inlet of the duct that leads outside air to the air cleaner to face upward in the upper part of the fender of the vehicle that forms a closed space, and to open the outside air inlet diagonally toward the rear of the vehicle body. This can be achieved by providing a shielding plate in the fender on the front side of the outside air inlet to prevent water and dust from entering from the front. Hereinafter, the present invention will be explained with reference to FIGS. 2 to 6.

FIG. 2 shows an embodiment of the present invention viewed from above, and FIG. 3 shows a cross section taken along the line A--A in FIG.

In FIG. 2, 8 is an engine room, 9 is an engine, and the air cleaner 1 is mounted on the engine 9 within the engine room 8. Reference numeral 10 denotes an air cleaner duct, which is connected to an air cleaner nose 11 that is integrated with the air cleaner 1, and is fitted and fixed to the fender inner 12 (see FIG. 3). 13 is an L-shaped duct, and as shown in FIG.
It is housed in a fender that is fitted and fixed to form a closed space that is difficult for water, dust, etc. to enter, and its base end is connected to the air cleaner duct 10. Therefore, the outside air inside the fender is guided along the path of duct 13 → air cleaner duct 10 → air cleaner nose 11 → air cleaner 1. The duct 13 is arranged so that its outside air introduction port 13a faces the upper part of the fender outer 15 with a gap left.
Furthermore, as will be described later with reference to the examples shown in FIGS. 4 and 5, the outside air inlet 13a opens obliquely toward the rear of the vehicle body. Reference numeral 16 denotes a shielding plate, which is fixed to the fender inner 12 so as to be positioned as fully above the fender outer 15 as possible on the front side of the outside air inlet 13a. In addition, in FIG. 3, 18 is a fastener.

With the outside air introduction duct device as described above, when the engine starts, outside air flows into the outside air introduction port 1 of the duct 13.
3a, the outside air inlet 13a is arranged upward and opens diagonally toward the rear of the vehicle body, and the fender outer 15 and shielding plate 16 prevent water, dust, and wind from entering. This prevents water droplets and dust from being sucked in, preventing water hammer and seizure damage to the engine.Furthermore, since the intake air is introduced into the duct from the rear of the vehicle, it is not affected by vehicle speed, wind speed, etc. You can breathe air stably. Furthermore, since the outside air inlet 13a is opened and installed near the top of the fender outer 15, a sufficient head height against water can be obtained. In addition, the shielding plate 16 only needs to be closed partially near the outside air inlet 13a, so it can be small, and it can be easily sealed with the fender outer 15, and can be integrally painted with the fender inner 12 by welding. This eliminates the need for rust prevention treatment for each item, which is advantageous in terms of cost.

By the way, the shape of the outside air inlet 13a of the duct 13 is such that the front edge 13b of the vehicle body is raised higher than the rear edge, as shown in FIG. 4 showing a cross section taken along line B-B in FIG. By lowering the portion 13c and arranging the highest point of the front side edge portion 13b completely above the fender outer 15 as shown in Fig. 4, the effect of preventing water droplets from entering can be further enhanced, and the resistance when introducing outside air can be further increased. can be kept small. On the other hand, if the edge of the shielding plate 16 that contacts the fender outer 15 is covered with rubber 17 as shown in FIG.
It is possible to prevent the squeaking noise caused by interference. Further, the shielding plate 16 is not limited to a flat plate as shown in the figure, but may be formed in a curved shape so as to surround the side of the outside air inlet 13a to some extent.

As explained above, the outside air introduction duct device of the present invention has the outside air introduction port facing upward in the fender, opening diagonally toward the rear of the vehicle body, and having a shielding plate on the front side of the opening. Therefore, it is possible to effectively prevent water and dust from entering, and the wind is also blocked by the shield plate, and the intake air is introduced into the duct from the rear of the vehicle body, so water droplets etc. are not sucked in, and the vehicle speed and wind speed are This has the effect of making it possible to inhale stable air without being affected by such factors.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing the prior art, FIG. 2 is a plan view showing an embodiment of the present invention, FIG. 3 is a sectional view taken along the line A-A in FIG. 2, and FIG. 5 is a perspective view showing an example of a duct, and FIG. 6 is a side view showing an example of a shielding plate. In the drawing, 1 is an air cleaner, 10 is an air cleaner duct, 11 is an air cleaner nose, 12 is a fender inner, 13 is a duct, 13a is an outside air inlet, 13b is a front side edge, 13c is a rear side edge, and 14 is a spigot. , 15 is a fender outer, 16 is a shielding plate, and 17 is a rubber edge thereof.

Claims (1)

[Scope of utility model registration request] The outside air inlet of the duct that leads outside air to the air cleaner is arranged facing upward in the upper part of the fender of the vehicle forming a closed space, and the outside air inlet opens diagonally toward the rear of the vehicle body, An outside air introduction duct device characterized in that a shielding plate is provided in the fender on the front side of the outside air introduction port to prevent water and dust from entering from the front side.