JPS625367Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air bleed device for closing a door of a vehicle such as an automobile.

Conventionally, an air bleed passage that communicates the interior of a car with the atmosphere is provided in a part of the car body, and when the door is closed, the air in the cabin is released to the atmosphere through the air bleed passage, thereby reducing the pressure inside the cabin. prevent,
BACKGROUND ART An air bleed device is known that not only improves the tightness of the door but also prevents people inside the car from getting ear pain when closing the door. However, when the cross-sectional area of the air vent passage becomes large when the door is large, such as in a two-door car, noise enters the vehicle interior from the air vent passage while the vehicle is running. Therefore, as shown in Japanese Utility Model Application Publication No. 55-47464, there is a damper valve installed in the air vent passage that is normally closed and opens when the pressure inside the vehicle increases. Therefore, when outside air is introduced into the cabin for air conditioning, the one-way valve opens and noise intrudes.

The present invention solves the above-mentioned problem by locking the one-way valve with a lock mechanism when the blower of the air conditioner is operated, so that the one-way valve does not open when there is a small pressure increase such as when outside air is introduced for air conditioning. An object of the present invention is to provide an air bleed device for a vehicle door closing operation, which can reliably prevent noise from entering the vehicle interior by preventing noise from entering the vehicle interior, and can suppress a rise in pressure inside the vehicle interior when the door is closed. .

In order to achieve this objective, the air bleed device for vehicle door closing operation of the present invention is provided with a one-way valve that opens when the pressure inside the vehicle increases in the air bleed passage that communicates the interior of a vehicle such as an automobile with the atmosphere. In addition, the valve is provided with a locking mechanism that locks the valve only when the door is closed and the blower of the air conditioner is operating.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an air bleed passage, and this air bleed passage 1 opens at its outer end in a front cowl 4 provided between a windshield 2 and a front hood 3 of an automobile, and extends below the front cowl 4. Passing through the provided front bulk 5, an air vent box 6 fixed below this is opened at its inner end to allow communication between the atmosphere and the vehicle interior. This air bleed box 6 also serves as a valve case for the one-way valve 7, and the one-way valve 7, as shown in FIG. Valve body 8
The upper end of the air vent box 6 is pivotally mounted, and normally closes the opening 6a of the air vent box 6 by gravity.

Here, a locking mechanism 9 is attached to the valve 7. This lock mechanism 9 includes a magnetic body 10 fixed to the valve body 8 and an electromagnet 11 that magnetically attracts the magnetic body 10, and the electromagnet 11 is fixed to the opening 6a side of the air vent box 6. The circuit of this electromagnet 11 is connected in series to a battery 16, which is a power source, via a door switch 12, which is turned ON when the door of the automobile is closed, a blower switch 14 of a blower 13 of an air conditioner, and an ignition switch 15. In the air bleed device configured as described above, when the blower 13 of the air conditioner is operated, such as while the car is running, the switches 12, 14, and 15 are all turned off.
Since it is ON, the electromagnet 11 is energized, the electromagnet 11 is excited, and the magnetic body 10 is attracted to it. That is, the locking mechanism 9 locks the valve 7 in the closed state with the valve body 8 closing the opening 6a. Therefore, even if outside air for air conditioning is introduced into the vehicle interior by the blower 13 and the pressure in the vehicle interior increases, this pressure increase is small, so the valve body 8 does not open and the vehicle It is possible to reliably prevent noise from entering the vehicle interior while driving. Furthermore, when the door of the automobile is opened, the door switch 12 is turned OFF and the energization of the electromagnet 11 is cut off, so that the electromagnet 11 is demagnetized and the lock of the valve body 8 is released. Therefore, when an operation is performed to close an open door, the valve body 8 is opened and air is released from the vehicle interior through the air vent passage 1 to the atmosphere, thereby suppressing a rise in pressure within the vehicle interior.
The doors close well, and the ears of the people inside the car won't hurt. Note that when the blower 13 is not driven, the blower switch 14 is turned OFF, so the electromagnet 11 is not energized regardless of whether the door switch 12 is ON or OFF. However, when the blower 13 is not driven, the internal pressure in the vehicle interior increases. There are almost no Therefore, since the valve body 8 will not open even if it is not locked, the air vent passage 1
Noise will not enter the vehicle interior. Furthermore, in order to turn off the ignition switch 15 when parking or stopping for a long time, the electromagnet 1
1 is not energized, and there is no power loss in the battery 16.

In addition, in the present invention, the air bleed passage is not limited to the location in the embodiment, but can be placed at an appropriate location such as the rear side of the vehicle body, and the lock mechanism is not limited to the configuration in the embodiment, but can be operated by opening and closing the solenoid valve. The one-way valve can be locked using the suction negative pressure, and the door switch can also be used to turn on and off the room lamp, and a contact point that operates in the opposite direction may be added. Furthermore, the one-way valve of the present invention either does not close completely even when the valve body is closed and maintains a slight opening, or has a microhole that allows the air vent passage and the passenger compartment to communicate at all times regardless of whether the valve body is opened or closed. It is preferable to provide one.

As explained above, according to the present invention, a locking mechanism is attached to the one-way valve provided in the air vent passage, and the locking mechanism locks the valve when the door is closed and the blower of the air conditioner is operating. Since only the door is locked in the closed state, it is possible to reliably prevent noise from entering the passenger compartment from the air vent passage even when the blower is in operation, and the door can be closed while suppressing a rise in pressure within the passenger compartment. This effect can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a side cross-sectional view showing an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the configuration of the main parts. 1...Air vent passage, 2...Windshield,
3...Front hood, 4...Front cowl,
5...Front bulk, 6...Air bleed box, 6a...Opening, 7...One-way valve, 8
... Valve body, 9 ... Lock mechanism, 10 ... Magnetic material, 11 ... Electromagnet, 12 ... Door switch,
13...Blower, 14...Blower switch, 15
...Ignition switch, 16...Battery.

Claims (1)

[Scope of utility model registration request] A one-way valve that opens when the pressure inside the vehicle increases is provided in an air vent passageway that communicates the interior of a vehicle with the atmosphere, and the valve is locked only when the door is closed and the blower of an air conditioner is operating. An air bleed device for closing a vehicle door, characterized in that a locking mechanism for closing a vehicle door is attached to the valve.