JPH0439057Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an air intake system for a vehicle, and particularly to an improvement of its air intake port, for sucking fresh air into an engine from an intake pipe.

[Conventional technology]

In order to improve engine performance by utilizing the ram pressure of the vehicle's wind speed, the air intake port of the intake pipe should be oriented toward the front of the vehicle, as disclosed in Japanese Utility Model Application Publication No. 144059/1983. It is desirable that there be.

However, if the opening direction of the intake nozzle attached to the upper end of the intake pipe is fixed to face the front of the vehicle, as in the device disclosed in the above-mentioned Japanese Utility Model Publication No. 58-144059, snow can be removed during snowfall. The problem is that the engine gets sucked in and blocks the opening, causing the engine to suffocate and become inoperable. For this reason, the use of vehicles that effectively utilize the ram pressure has been limited to countries where it does not snow.

As a solution to these problems, Japanese Utility Model Application Publication No. 53-128411 discloses an intake system for an engine in a combine harvester in which the intake port can be changed in any direction by 360 degrees by the driver. ing.

[Problem that the invention attempts to solve]

However, the conventional device disclosed in the above-mentioned Japanese Utility Model Publication No. 58-144059 has a structure in which the air intake port is changed by the driver while sitting in the seat. However, the surrounding environment and weather conditions must all be detected by the driver, which is troublesome and difficult to do when the driver is inside the cab, such as in a truck. has a problem that makes it impossible to perform such an operation.

[Means for Solving the Problems] The present invention was made to solve the above-mentioned conventional problems, and it is an invention that can automatically change the opening direction of the intake port according to changes in weather conditions. The purpose is to provide the following:
An air suction member of an intake pipe is disposed above the roof of the cab, and a drive mechanism is provided to change the opening of the air suction member from the front of the vehicle to the side of the vehicle by turning on a temperature switch and a humidity switch. A vehicle air intake device is characterized by:

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in FIGS. 1 to 11.

1 to 5 show a first embodiment of the present invention, in which reference numeral 1 denotes an intake pipe, and the air suction member at the tip thereof bent toward the front of the vehicle is connected to the roof of the cab 2. 3, and an air cleaner 4 is connected to the lower end of the intake pipe 1.

5 is on the front surface of the tip of the air suction member, and 6 is on the front surface of the tip of the air suction member.
are air suction ports provided on one side of the tip, and a drive mechanism consisting of a flat valve 9 that rotates around a pin 8 by an air cylinder 7 is disposed in both air suction ports 5 and 6. The valve 9 opens one of the suction ports 5 and 6 and closes the other, that is, when the air cylinder 7 is not in operation, the front suction port 5 opens.
The suction port 6 on the side surface is configured to be closed.

10 is a temperature switch, 11 is a humidity switch,
When both switches 10 and 11 are activated and both are turned on, the air cylinder 7 is activated and the valve 9 is rotated to close the suction port 5 on the front side and open the suction port 6 on the side side. configured,
The temperature switch 10 and the humidity switch 11 are set so that they are both turned on during snowfall.

That is, for example, the temperature switch 10 is turned on only when the temperature is 5°C or less, and the temperature switch 10 is turned on only when the humidity is 100°C or less.
%, the humidity switch 11 is turned on, and both switches 10 and 11 are connected in series. In addition, humidity switch 1
The operation of the wiper switch may be changed to this without using 1, and the front of the suction port 5 is
It is preferable to cut diagonally as shown in the figure to prevent snow from adhering here.

Normally, the air cylinder 7 is kept in a non-operating state, and as shown in FIG. When it is snowing, operate the air cylinder 7, close it with the valve 9, open the suction port 6 to take in air, and open the suction port on the front side. This prevents the engine from suffocating and becoming inoperable even if it is blocked by snow. In addition, in the figure, 12 is a dust cover arranged horizontally in the suction port 5, 13 is a manual switch, 14 is an air tank, and 15 is a three-way valve.

6 to 8 show a second embodiment of the present invention, which differs from the first embodiment described above.
The problem lies in the configuration of the drive mechanism for the air suction member attached to the tip of the intake pipe 1. That is, an elbow-shaped cylindrical body 1 bent at a right angle is used as an air suction member.
6 is rotatably connected to the tip of the intake pipe 1 at its lower end, and this tip end surface serves as the opening of the suction port 17, and the cylindrical body 16 is rotated by the air cylinder 18. .

Normally, the air cylinder 18 is in the inactive state so that the suction port 17 faces the front of the vehicle, and similarly to the above embodiment, when the temperature switch 10 and the humidity switch 11 are turned on at the same time, the air cylinder 18 is turned off. 18 is activated to rotate the cylindrical body 16 by approximately 90 degrees so that the suction port 17 faces the front of the vehicle, thereby preventing the suction port from being blocked by snow.

Furthermore, FIGS. 9 to 11 show a third embodiment of the present invention, which differs from the first embodiment in that a solenoid valve 19 is used instead of the air cylinder 7, and a solenoid valve 19 is used instead of the valve 9. A front end door 20 and a side end door 21 on one side of the intake pipe 1 are attached, which operate in opposite directions to each other. That is,
When the solenoid valve 19 is not operating, that is, when the rod 22 is rising, the end door 20 opens, and the solenoid valve 19 operates so that the other end door 21 closes, and when the rod 22 is pulled downward, the end door 20 opens. 20 is closed and the armrest door 21 is opened.

As in the above embodiment, the temperature switch 1
When the humidity switch 11 and the humidity switch 11 are turned on at the same time, the solenoid valve 19 is activated.

[Effect of idea]

As described above, the vehicle intake device according to the present invention has the following features:
An air suction member of an intake pipe is disposed above the roof of the cab, and a drive mechanism is provided that changes the opening of the air suction member from the front of the vehicle to the side of the vehicle by turning on a temperature switch and a humidity switch. Therefore, by sucking air through the opening facing toward the front of the vehicle, it is possible to effectively utilize the ram pressure of the wind speed of the vehicle to suck in sufficient air, thereby improving engine performance.

In addition, when it snows, the opening can be automatically changed to the side of the vehicle using both on/off switches that detect temperature and humidity, so the air intake is not blocked by snow and air can be sucked in. It has various effects such as being able to prevent the engine from being unable to rotate due to shortage.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the present invention,
Figure 1 is a side view of a truck equipped with the present invention;
Figure 3A is a plan view of the air suction member under normal conditions, Figure 3B is a view showing the inside at this time, Figure 3A is a plan view of the air suction member during snowfall, and Figure 3B is a view showing the inside at this time. 4 shows the same side view and an outline of the circuit, FIG. 5 shows the same front view, FIGS. 6 to 8 show other embodiments, and FIG. 6 shows the air suction member in normal conditions. 7 is a plan view of the same during snowfall, FIG. 8 is a vertical sectional view of the same, FIGS. 9 to 11 show still other embodiments, and FIG.
The figures are the same plan view, FIG. 10A is the same side view during normal conditions, FIG. 10B is the same front view, and FIG. 11 is the same side view during snowfall. 1... Intake pipe, 2... Cab, 3... Roof,
5, 6, 17... Suction port. 7, 18... Air cylinder, 9... Valve, 10... Temperature switch, 11... Humidity switch, 16... Cylindrical body, 2
0,21...Eroi door.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The air suction member of the intake pipe is disposed above the roof of the cab, and the opening of the air suction member is opened from the front of the vehicle by turning on the temperature switch. A vehicle intake system characterized by being equipped with a drive mechanism that changes laterally. (2) A drive mechanism that installs shutters in the openings of air suction members provided toward the front and sides of the vehicle, and closes the shutters at the front of the vehicle and opens the shutters at the sides by turning on a temperature switch and a humidity switch. An air intake device for a vehicle according to claim 1, characterized in that it is equipped with the following. (3) The air suction member is rotatably mounted, and the air suction member is equipped with a drive mechanism that rotates the opening direction from the front of the vehicle to the side of the vehicle when a temperature switch and a humidity switch are turned on. An air intake device for a vehicle according to claim 1, characterized in that: