JPH0437764Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an air intake device for introducing outside air into the driver's cabin in a cab-over type automobile.

(Prior Art) Cab-over type automobiles generally have a driver's cabin located at the very front of the vehicle body.

Fig. 5 shows a part of the front structure of an example of a cab-over type automobile to which a conventional air intake device is applied, and Fig. 6 shows a cross section taken along line A-A in Fig. 5. FIG. 3 is a cross-sectional view of the air intake device. In FIGS. 5 and 6, a grille 3 and a bumper 4 are provided on a front section 1 of this automobile below a front panel 2 surrounding a driver's seat. Furthermore, headlights 5 and signal lights 6 are disposed on both sides of the front portion 1 between a grille 3 and a bumper 4. A plurality of ventilation holes 7 are formed in the grille 3, and at the rear of the ventilation holes 7, an air passage consisting of a ventilation duct 8, an air intake box 9, a scoop 10, etc. hidden by the front panel 2 is provided. The air intake opening 11 of the scoop 10 in the intake device is correspondingly arranged.

The ventilation duct 8 is formed in the overall shape of a single hollow column, one end 12 of which leads to the driver's cab, and the other end 1
The other end 13 of the ventilation duct 8 is bent downward and disposed in a state of lying on the front side of the driver's cab.
is inserted into and connected to the end face of the ventilation outlet 14 of the air intake box 9.
The lower end of the air intake box 9 is fixed to the cab floor 16 by a screw through a packing 17. Inside the air intake box 9 is a shield plate 18 which is rotated from the driver's seat via a wire or the like to open and close the ventilation passage in the air intake box 9.
Damper 19 for absorbing shock at the opening rotation end of 8
In addition, a through hole 20 formed in the cab floor 16 corresponding to the ventilation inlet 15 of the air intake box 9 is provided with an air exhaust port 2 of the scoop 10.
The end of the scoop 10 having a flange 2 is inserted and connected to communicate with the inside of the air intake box 9 and the scoop 10. The air discharge end of the scoop 10 is connected to the through hole 20 by pressing a protruding wall portion 21 formed to protrude outward from the outer periphery of the end of the scoop 10 in a shape that goes almost completely around the outer periphery of the scoop 10 into the through hole 20, and by engaging the inclined surface of the protruding wall portion 21 that passes through the through hole 20 and protrudes to the opposite side with the edge of the through hole 20. The scoop 10 is also bent at approximately 90 degrees horizontally forward toward the vent 7 of the grill 3, and the air intake opening 11 is provided on the end face of the other bent end.

When a cab-over type automobile configured as described above takes in outside air while driving, the shielding plate 18 in the air intake box 9 is rotated in the direction of arrow C, so that the outside air passing through the ventilation hole 7 can be taken in. The air is taken into the driver's cabin through the scoop 10, the air intake box 9, and the ventilation duct 8. Conversely, if it is desired to stop taking in outside air, the ventilation path can be closed by rotating the shielding plate 18 in the direction of arrow D.

(Problem to be solved by the invention) By the way, in this cab-over type car, water blown toward the front of the car body when driving in the rain or water kicked up from the preceding vehicle enters the scoop 10, and further air leaks from the scoop 10. It may invade into the intake box 9 and ventilation duct 8. This infiltrated water falls back into the scoop 10, but the water adhering to the inner walls of the ventilation duct 8 and air intake box 9 travels along these inner walls and temporarily accumulates in the gap between the scoop 10 and the cab floor 16, and then The water overflowing from this gap returns into the scoop 10 again. Therefore, the space between the cab floor 16 to which the lower end of the air intake box 9 is attached and the air intake box 9 is sealed with a seal 17 to prevent water accumulated between the scoop 10 and the cab floor 16 from entering the cab. It seems like there is no such thing. However, Patsukin 1
If sufficient sealing performance cannot be obtained due to deterioration of the driver's compartment, water may enter the driver's compartment and cause it to get wet.

This idea was created in view of the above problems.
To provide an air intake device for a cab-over type automobile having a structure that prevents water entering the air intake device from flowing into a driver's cab even if a sufficient sealing performance is not obtained at a connection part with a cab floor. The purpose is to

(Means for Solving the Problems) In order to achieve the above object, the present invention provides the above-mentioned on the outer periphery of one end of the scoop at the part inserted and connected to the air intake box connected to the ventilation duct leading into the driver's cabin. A drainage guide groove is provided for draining water that has entered between the inner peripheral surface of the air intake port of the air intake box and the outer peripheral surface of the scoop to the outside of the vehicle body.

(Function) According to the present invention, water that enters from the air intake opening of the scoop and enters between the air intake opening of the air intake box and the outer periphery of the scoop is actively drained through the drainage guide groove provided on the outer periphery of the scoop. The water is then led to the outside of the vehicle and drained. Therefore, it is possible to suppress water from entering the driver's cab from the connection part with the cab floor side.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing the front structure of a cab-over type automobile to which an air intake device according to an embodiment of the present invention is applied, and FIG. 2 is an exploded perspective view of the same device. In the figure, a grille 33 and a bumper 34 are provided on a front section 31 of this automobile below a front panel 32 surrounding a driver's seat. Furthermore, headlights 35 and signal lights 36 are disposed on both sides of the front section 31 between a grille 33 and a bumper 34. A plurality of ventilation holes 37 are formed in the grille 33, and at the rear of the ventilation holes 37, an air intake device 29 consisting of a ventilation duct 38, an air intake box 39, a scoop 40, etc.
The air intake openings 41 of the scoop 40 (see FIG. 2) are correspondingly arranged.

The ventilation duct 38 has a hollow columnar shape as a whole, and one end 42 communicates into the driver's cab, and the other end 43 is bent downward and is arranged to lie on the front side of the driver's cab. and the middle part 2 of the ventilation duct 38
8 is bent into a shape that is one step lower than both ends 42 and 43 in order to collect water that has entered the ventilation duct 38 into this middle part 28. A drain port 25 is provided on the bottom surface 27 for discharging water collected in the intermediate portion 28 to the outside of the vehicle body via a drain hose 26. Further, at the other end 43 of this ventilation duct 38, there is provided a projecting wall 43A that protrudes outward in a shape that goes around the outer circumference, and this projecting wall 43A is connected to the end surface of the ventilation outlet 44 in the air intake box 39. The other end 43 is inserted into the ventilation outlet 44 until they are positioned in contact, and the ventilation duct 38 and the air intake box 39 are connected. and air intake box 39
In this case, a lower end portion 39A in which a ventilation inlet 45 serving as an air intake on the ventilation duct side is provided in the cab floor 46 is screwed through a sealing gasket 47.
A shielding plate 48 is provided inside, which can be rotated from the driver's seat via a wire or the like to selectively open and close the ventilation passage in the air intake box 39. Also air intake box 3
One end 40A of the scoop 40 having an air outlet 52 is inserted and connected to a through hole 50 formed in the cab floor 46 corresponding to the ventilation inlet 45 of No. Communication is being maintained. One end 40 of this scoop 40
The outer circumferential surface of A is provided with a plurality of protruding wall portions 51 which are formed to project outward and are scattered on the same line that goes around the outer circumferential surface and extend along this line (see Fig. 4). . The connection between the one end 40A of the scoop 40 and the through hole 50 is achieved by press-fitting the one end 40A into the through hole 50, and further by pressing the one end 40A into the through hole 50.
The upper hole edge of the through hole 50 is engaged with the inclined surface 51A of the projecting wall portion 51 that passes through the hole and protrudes to the opposite side. Further, on the outer periphery of the end portion 40A of the scoop 40 and between the projecting wall portions 51, a plurality of drainage guide grooves 55 are provided, each of which is formed into a groove shape by recessing a portion of the outer periphery inward. Each drainage guide groove 55 has a shape extending in the vertical direction. Then, when the through hole 50 and the scoop 40 are connected, the cab floor 46 is inserted from above the seal packing 47.
It is formed below the air intake box 3.
The lower end inner wall 39B of 9 and the one end 4 of the scoop 40
Water that has entered between the outer peripheries of 0A is drained and guided to the lower part of the cab floor 46 through this drainage guide groove 55 (see FIG. 3). Further, the overall shape of the scoop 40 is such that the intermediate portion is bent approximately 90 degrees horizontally forward toward the ventilation hole 37 of the grille 33, and this bent portion facing the one end portion 40A is The air intake opening 41 is provided at the end of the end portion 40B, also facing forward.

When the air intake device configured in this manner takes in outside air, the air intake box 39
When the shielding plate 48 inside is rotated to open the ventilation passage inside the air intake box 39, outside air that has passed through the ventilation hole 37 is taken into the driver's cabin through the scoop 40, the air intake box 39, and the ventilation duct 38. . On the other hand, if it is desired to stop taking in outside air, it can be done by returning the shielding plate 48 and closing the ventilation path inside the air intake box 39.

In addition, in this air intake device, water blown forward of the vehicle body when driving in the rain or water kicked up from a preceding vehicle enters the scoop 40, and further enters the air intake box 39 and ventilation duct 38 from the scoop 40. Assuming that a computer infiltrates the system, the situation will be as follows.

First, water that tries to penetrate deeply toward the middle part 28 of the ventilation duct 38 hits the inner wall surface of the middle part 28 bent from the other end 43 and falls into the middle part 28, where it is collected and drained. It is discharged from the port 25 to the outside of the vehicle body via the drain hose 26. Therefore, one end 42 of the ventilation duct 38
There is no possibility of water entering the driver's compartment.

In addition, water that has been scattered to the front of the ventilation duct 38 falls back into the scoop 40 and returns, but the water that has adhered to the inner wall surface of one end 43 of the ventilation duct and the inner wall surface of the air intake box 39 is transmitted along these inner wall surfaces. It enters between the outer periphery of one end 40A of the scoop 40 and the inner wall 39B of the lower end of the air intake box 39. However, the water that has entered between the one end portion 40A and the lower end inner wall 39B is discharged and guided to the lower part of the cab floor 46 through the drainage guide groove 55 formed on the outer periphery of the scoop 40, and is discharged to the outside of the vehicle. Therefore scoop 4
Since water does not accumulate between the outer periphery of one end 40A of the air intake box 39 and the inner wall 39B of the lower end of the air intake box 39, the water flowing into this area slightly deteriorated the sealing performance of the seal packing 47. Even so, there will be no inconvenience such as passing through the seal packing 47 and entering the driver's cabin.

(Effects of the invention) As explained above, according to the invention, water that enters between the outer peripheral surface of the scoop and the inner peripheral surface of the air intake in the air intake box is drained out of the vehicle body through the drainage guide groove. This makes it possible to reliably prevent water from entering the driver's cabin.

[Brief explanation of drawings]

Fig. 1 is a plan view showing a part of the front configuration of a cab-over type automobile to which an air intake device according to an embodiment of the present invention is applied, Fig. 2 is an exploded perspective view of the same device, and Fig. 3 is Fig. 4 is an enlarged perspective view of the main parts of the scoop used in the above device; Fig. 5 is a plan view showing the front configuration of a cab-over vehicle to which the conventional air intake device is applied. 6 is a sectional view of the same device taken along the line A--A in FIG. 5. 25... Drain port, 26... Drain hose, 28
... middle part of ventilation duct, 29 ... air intake device, 38 ... ventilation duct, 39 ... air intake box,
40...Scoop, 40A...One end of the scoop, 41...Other end of the scoop air intake opening, 45
...Ventilation inlet, 39B...Lower end inner wall of air intake box, 55...Drainage guide groove.

Claims (1)

[Scope of utility model registration request] One end of a scoop is inserted and connected to the air intake port of an air intake box connected to a ventilation duct leading into the driver's cabin, and the air intake opening at the other end of the scoop is directed approximately horizontally forward. The intake device includes a drainage guide groove provided on the outer periphery of the one end of the scoop for draining water that has entered between the inner peripheral surface of the air intake port of the air intake box and the outer peripheral surface of one end of the scoop to the outside of the vehicle body. An air intake device for a cab-over type automobile, characterized by the following: