JPS633290Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a snorkel type intake device for an engine.

Conventionally, in devices with a snorkel-type intake pipe that protrudes upward, a drainer is installed at the tip of the intake pipe, but during heavy rain, for example, the drainer removes rainwater from the intake air. There was a fear that it would not be possible to completely remove it.

The present invention has been devised in view of the above, and embodiments thereof will be described in detail below with reference to the accompanying drawings.

In the first embodiment shown in FIGS. 1 and 2, in the figures, 2 is a truck cab, 4 is an engine air cleaner (not shown) provided at the bottom of the cab, and 6 is connected at one end to the air cleaner. The intake pipe has its other end projecting upward, and 8 is an intake nozzle attached to the tip of the intake pipe. The intake pipe 6 is bent near the height of the air cleaner 4,
Further, the distal end portion is fitted to the outer periphery of a connecting pipe 10 extending from the air cleaner 4 near the bent portion.

Further, there is a gap between the intake pipe 6 and the connecting pipe 10 at the bend, and the intake pipe 6 has a drainage hole 6a at the lower part of the bend.

According to the above configuration, rainwater that has descended inside the intake pipe 6 along with the intake air adheres to the inner wall of the intake pipe 6 due to its own inertia at the bent portion and is effectively drained from the drain hole 6a.

In the second embodiment shown in FIG. 3, a connecting pipe 12 extending from an air cleaner 4 is fitted onto the outer periphery of an intake pipe 6, and one end is connected to the inner periphery of the intake pipe 6 at a bent part of the intake pipe 6. It has an inner tube 14 which is fitted and whose other end is open within the same bent portion. Also,
A check valve 16 is installed in the drain hole 6a of the intake pipe 6 to allow only drainage.

According to the above structure, the rainwater in the intake pipe 6 can be drained from the drain hole 6a by the same function as in the first embodiment. In particular, since the check valve 16 is installed in the drain hole 6a, the intake pipe 6 can be drained from the drain hole 6a. This is very effective when there is a possibility that rainwater may enter the pipe 6.

Furthermore, as shown in FIG. 4, it is also possible to connect a hose 18 to the drainage hole 6a for guiding the drainage from the drainage hole 6a to an appropriate location, if necessary.

The third embodiment shown in FIGS. 5 and 6 is
The tip of the intake pipe 6 is fitted onto the outer periphery of the connecting pipe 10 extending from the air cleaner 4, and at the fitting part, the intake pipe 6 is partially along the axial direction so as to leave a gap with the connecting pipe 10. The drainage hole 20
was formed.

According to the above configuration, rainwater in the intake pipe 6 can be effectively drained from the drain hole 20 by the same effect as in the first and second embodiments, and in particular, the drain hole 20 is connected to the connecting pipe 1.
0 and the intake pipe 6, it has the effect of greatly reducing the backflow of rainwater from the drainage hole 20.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the whole, Fig. 2 is an enlarged sectional view of section A in Fig. 1 showing the first embodiment, and Fig. 3 is an enlarged sectional view of section A in Fig. 2.
4 is a cross-sectional view of a main part showing a modified example, FIG. 5 is a cross-sectional view of a third embodiment, and FIG.
The figure is a sectional view taken along the - line in FIG. 5. 2... Cab, 4... Air cleaner, 6... Intake pipe, 6a... Drain hole, 20... Drain hole.

Claims (1)

[Scope of utility model registration request] In a device having a snorkel-type intake pipe projecting upward, the intake pipe is bent at a height near an air cleaner to which it is connected at a position near the bottom of the intake pipe, and the bent portions are spaced apart from each other. The inner pipe of the double pipe structure has one end open at the bent portion and the other end connected to the air cleaner to maintain air-water tightness, and the outer pipe of the double pipe structure has a drainage hole. A snorkel-type intake device for an engine, which is characterized by the following: