JPH089418Y2 - Intake duct of a cabin car - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a vertical intake duct to be attached to the front part of a vehicle body of a cab-over vehicle.

[Prior art]

It is well known that all-wheel drive vehicles are used as vehicles that travel on construction sites where the roadbed is not maintained, quarries, unpaved roads, and the wilderness because of their excellent mobility. It is as follows. By the way, there are cases where the vehicle travels in such an area, a place flooded by heavy rain, or in some cases, it crosses a shallow river where there is no bridge.

Therefore, in order to take in clean air to the engine installed in a cab-over vehicle, a so-called vertical intake duct is usually adopted, in which the intake duct is erected upright between the cab and the loading platform and the air intake is provided at a high position. There is.

By the way, as described above, the water depth at which an automobile can run underwater is usually about 400 to 500 mm. Therefore, there is no particular problem in the case of a vehicle equipped with the above-mentioned vertical intake duct. However, in a special vehicle such as a double cab vehicle, there is no room to install the vertical intake duct in the middle of the vehicle body, so it is possible to use the front portion of the vehicle body as a mounting location, but the following problem occurs.

That is, when the cab-over vehicle plunges into the water of the above-mentioned depth, a water column or splashes rise along the front part of the vehicle body to suddenly splash a large amount of water. This water column or splash is the moment when it first enters the water, usually for a few seconds, and thereafter such a phenomenon disappears.

However, if a large amount of this water column or water splash enters the duct through the intake port, it adversely affects the engine. Therefore, as described above, there is also an intake duct in the front part of the vehicle body, for example, a so-called A post, which extends the air intake to the roof of the cab to prevent the influence of water splashing. However, this means has a problem that it hinders the driver's view. Therefore, if the opening is made in the vicinity of the lower end of the windshield, the view is not obstructed, but there is a problem that the engine is affected by the splashed water.

Therefore, as a conventional means for removing water droplets entering from the air intake of the vertical intake duct, a thicker duct is attached around the tip of the duct to collect the water droplets on the inner wall of the extra-insertion duct, and the water flowing down is thick. There is a device disclosed in Japanese Utility Model Laid-Open No. 59-54310, which has a small hole for flowing out from between the duct and the intake duct.

According to this prior art, when the air sucked from the air intake becomes a swirling air flow and descends, water drops are attached to the inner wall of the extrapolation duct by centrifugal force and removed.
However, this prior art cannot be used in the above case where a large amount of water rises in an instant.

[Purpose of device]

The present invention has been made to solve the above-mentioned problem, and when installing the vertical intake duct in the front of the cab-over vehicle, it does not obstruct the driver's view, and furthermore, in a pool of water or shallow water of a river. It is an object of the present invention to provide an intake duct in which the driver's field of vision is not obstructed by splashing water when it rushes in, and there is no danger of water entering the intake duct even if it rushes in.

[Constitution of device]

The structure of the intake duct of the cabover vehicle of the present invention for achieving the above object is to install the intake air for combustion air of the engine on the front surface near the lower end of the windshield in front of the driver's seat, with the lower side to the intake. Cover the open hood,
It is characterized in that a baffle is attached to the lower side thereof so as to protrude from the vehicle body so that the water column rising up from the bottom or the water spray is turned forward and left and right.

The shape and mounting method of the baffle are not particularly limited, but normally, a plate for cutting back water from the front part of the body of the cabover vehicle to the front and left and right may be projected below the air intake of the intake duct. . The distance between the air intake and the baffle is not particularly limited, but is usually about 150 mm or more. If it is too close, splashes of water that are scattered by turning back will easily reach the air intake, and if it is too far away, the effect will be diminished.

As an application of the present invention, the baffle can be provided so as to fill the width of the vehicle so that the windshield is not splashed with water.
Further, the intake duct may be provided between the outer panel and the inner panel of the vehicle body without attaching the intake duct to the outside of the vehicle, and only the air intake portion may be exposed to the outside.

〔Example〕

The attached drawings are for explaining a state in which a vertical intake duct and a baffle according to an embodiment of the present invention are attached and an operation thereof. FIG. 1 is a front view of a main part, and FIG. 2 is a side view thereof.

In the figure, a hood 3 for sucking air from below is attached to the tip of a vertical intake duct 2 extending upward from the lower front portion of the cab 1 of a cab-over vehicle along the body.

The baffle 4 installed around the intake duct 2
It is fixed to the operator's cab 1 with bolts 5, is inclined downward toward the front, and the tip portion 6 is bent downward so that the water flow rising from the bottom is easily cut back toward the front lower side. 7 is the windshield,
8 is a headlamp, 9 is a bumper, and 10 is a door.

Next, the operation of this embodiment will be described with reference to FIGS. 3 to 6 in comparison with a comparative vehicle to which the baffle 4 is not attached. FIG. 3 shows how the water column or water splash rises immediately after the cab-over vehicle A having no baffle 4 plunges into the water. In this case, since a large amount of water is suddenly removed by the vehicle body, the water column or the water spray S rises along the vehicle body front portion F toward the front of the cab 1 and the roof.

Therefore, the intake duct 2 is confined in the water flow, so that a large amount of water enters the duct 2. In order to avoid this, there is no choice but to proceed gradually into the water, and the average speed or work efficiency decreases. Note that 11 is the water surface.

On the other hand, when the baffle 4 is attached, as shown in FIGS. 4 and 5, the water S rising up by the baffle 4 is cut back to show the front as shown in FIG. 4 and the water as shown in FIG. Since it splashes right and left like this, water does not reach the upper portion of the intake duct 2 and the hood 3.

Since the intake duct 2 of the present embodiment is installed at a position substantially in front of the operator's cab as described above, the baffle 4 turns the water column or the water spray S back and forth as shown in FIG. It acts to secure the field of view.

Then, usually, after about 3 seconds, the state shown in FIG. 6 is established, and the water surface 11 forms a rising surface 12 determined by the traveling speed of the vehicle body A and other conditions. Therefore,
As long as the operation is performed so that the surface 12 does not reach the hood 3, water does not enter the intake duct 2.

FIG. 7 is a perspective view of an essential part showing a partially broken example of a modified example of the above-described embodiment for facilitating attachment and detachment of the intake duct 2, and FIG. 8 is a longitudinal sectional view thereof. .

In the figure, the baffle 4 is manufactured by sheet metal working. Then, cut the plate at the central part where the intake duct 2 of the baffle 4 is mounted and fold it to the upper part,
A fixing portion 17 having a bolt hole 16 for fixing the intake duct 2 is formed.

In the front space 18 of the fixing portion 17 to which the intake duct 2 of the baffle 4 of this embodiment is attached, there is no portion for cutting back water.
As a countermeasure against this, in the second embodiment, as shown in FIG. 8, a lower opening 19 of the hood 3 is provided on the front part F side of the vehicle body, and the intake duct 2 is used as a kind of baffle to spray the intake duct. It prevents the entry into 2.

The specific dimensions of the second embodiment are as follows. The distance L between the lower end of the hood 3 and the baffle 4 is approximately 150 mm, and the baffle 4
Width W of the intake duct 2 is approximately 4/3 times the width w,
The gradient α of the baffle 4 was set to about 15 °. The main reason for providing the gradient α is to prevent dust accumulation. These values can be appropriately changed and implemented. When it is attached to a conventional vertical intake duct as an application of using a baffle, it is possible to prevent water repelled when a vehicle passes by an oncoming vehicle from entering the intake duct.

[Effect of device]

As described above, the intake duct of the cab-over vehicle according to the present invention has a structure in which a hood-covered air intake is provided on the front surface near the lower end of the windshield in front of the driver's seat and a baffle plate is attached to the lower side thereof. The air intake on the front of the driver's seat does not obstruct the driver's view, and the water column or water splash that occurs immediately after the cab overruns into the water is turned back and forth by the baffle plate to the driver's view. Can be prevented from being hindered by water, ensuring safety, and preventing rainwater and the water column or splash from reaching the air intake port on the front surface of the vehicle body and preventing the water from entering the intake duct. It is possible to exert an effect.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment, FIG. 2 is a side view of a main part of FIG. 1, FIGS. 3 to 6 are views for explaining the operation of the embodiment of FIG. 1, and FIG. FIG. 8 is a perspective view showing a partially cutaway baffle according to another embodiment, and FIG. 8 is a longitudinal sectional view thereof. 1 ... Operator's cab, 2 ... Intake duct, 4 ... Baffle.

Claims (1)

[Scope of utility model registration request] 1. A combustion air intake for an engine is attached to a front surface near a lower end portion of a windshield in front of a driver's seat, the intake is covered with a hood having an open lower side, and a baffle is provided under the hood. An intake duct for a cab-over vehicle, which is characterized in that it is mounted so as to project from the vehicle body so that the rising water column or water spray is turned back and forth to the left and right.