JPH07329576A - Automovile cabin air pressure control device - Google Patents

Abstract

PURPOSE:To cope with outside air pressure change while facilitating the opening /closing of an automobile door. CONSTITUTION:An automobile cabin air pressure control device is formed of an opening/closing action sensing device RE fitted to the opening/closing part of a door so as to sense the opening/closing action of the door, and pressure sensors P0S, P1S for sensing the air pressure difference between the inside and outside of the cabin, a forced intake and exhaust device FC installed in the luggage space of an automobile so as to perform intake into the automobile cabin and exhaust to the outside, and a control device for actuating the forced intake and exhaust device FC on the basis of the information, transmitted from the opening/closing action sensing part RE and the air pressure sensors P0S, P1S, so as to regulate the cabin air pressure of the automobile.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle interior pressure control device. More specifically, the present invention relates to a vehicle interior pressure control device that senses a pressure difference inside and outside a vehicle and controls the pressure difference inside the vehicle interior.

[0002]

2. Description of the Related Art In a conventional automobile, there is an experience of receiving an unpleasant stimulus to the ear when traveling in a place having a difference in altitude. In addition, there is a problem that it is difficult to open and close the door when getting on and off the vehicle due to the influence of the air pressure inside and outside the room, and the occupant feels a pressure when the door is opened and closed. However, heretofore, no method has been known for preventing unpleasant stimuli that may be applied to the ears while traveling in a place having a difference in altitude. It is known to automatically open the window glass a little to allow the air in the room to escape in order to make it easier to close the door. Alternatively, a method of forcibly closing the door with an electric door striker is known.

[0003]

However, the conventional method of opening the window glass has a problem that rain may enter the room. Furthermore, the method of forcibly closing the door with the electric door striker has a problem that it does not cope with any change in atmospheric pressure.

[0004]

Means for Solving the Problems

An opening / closing operation detection device attached to the opening / closing portion of the door for detecting the opening / closing operation of the door, an atmospheric pressure sensor for detecting a pressure difference between the inside and outside of the door, and an air conditioner installed in the luggage space of the vehicle, for intake into the vehicle interior and outside the vehicle. And a control device for operating the forced intake / exhaust device based on the information transmitted from the opening / closing operation sensing unit and the atmospheric pressure sensor to adjust the vehicle interior pressure. Automotive interior pressure control device,

[0006] to provide.

[0007]

When the opening / closing operation sensing device senses opening / closing of the door, it transmits a signal to that effect to the control device. When the atmospheric pressure sensor senses the difference between indoor and outdoor air pressures, a signal to that effect is transmitted to the control device. The control device operates the forced intake / exhaust device based on these received signals to adjust the room pressure.

[0008]

Embodiments of the present invention will be described with reference to FIG. 1 showing a central sectional view, FIG. 2 showing the same plan view, FIG. 3 showing an enlarged sectional view of the same portion, and FIG. 4 showing an enlarged plan view of the same portion.

A is an automobile. This automobile A has a rear luggage space 21. FC is a forced intake and exhaust device,
RE is an opening / closing motion sensing device, PS is an atmospheric pressure sensor, and C is a control device. The forced intake / exhaust device FC is installed in the rear luggage space 21. The opening / closing motion sensing device RE is
In this embodiment, it comprises a rotary encoder, which is attached to the rotary shaft of each door of the automobile A and detects the rotation of each door. The atmospheric pressure sensor PS is installed in the rear portion of the rear seat of the interior of the automobile A and measures the atmospheric pressure inside the automobile A, and the outdoor pressure sensor P0S is installed outside the rear luggage space 21 and measures the atmospheric pressure outside.
Consists of. The control device C is a computer having a memory / arithmetic function in this embodiment.

In FIG. 4, 11 is a forced intake / exhaust device FC.
Is an outside air side flow path, and 12 is an indoor side flow path. Both the outside air side flow passage 11 and the indoor side flow passage 12 are formed in an annular shape and are formed by contacting some of them, and as a whole, as shown in FIG. 4, have an 8-shaped structure. 13 is an outside air outlet, 1
Reference numeral 4 denotes an indoor air port, and the outdoor air port 13 is provided at one end of the outdoor air side flow passage 11 and is connected to the outdoor air. The indoor air port 14 is provided at one end of the indoor channel 12 and is connected to the interior of the vehicle.

The indoor-side flow path 12 is in contact with the indoor-side flow path 12 on the side opposite to the external-air opening 13 where the external-air opening 13 of the external-air-side flow path 11 is not formed, and is in contact with the external-air-side flow path 11 at the contact point. It is installed so that it can be distributed.

Reference numeral 22 is a fan. The fan 22, which is a servo fan in this embodiment, is installed at the contact portion between the outside air side flow passage 11 and the indoor side passage 12 across the outside air side passage 11 and the indoor side passage 12 and rotates in a certain direction. To do.
The rotation speed of the fan 22 can be changed, and the air volume is adjusted by changing the rotation speed. Reference numerals 15 and 16 are shutters. The shutter 15 and the shutter 16 are the fan 22.
It is moved along the guides 17 and 18 so as to be able to close the outside air side flow passage 11 or the indoor side flow passage 12, respectively, on both sides sandwiching. Reference numeral 19 is a solenoid valve, and 20 is a controller. The controller 20 switches the solenoid valve 19 and the fan 22.
Control the rotation speed of.

Next, the operation of the forced intake / exhaust device FC will be described. The controller 20 is operated, the solenoid valve 19 is switched, the outside air flow passage 11 is closed on the upstream side of the fan 22, and the indoor flow passage 12 is closed on the downstream side of the fan 22.
At this time, the indoor side flow passage 14 opens on the upstream side of the fan 22, and the outside air side flow passage 11 opens on the downstream side of the fan 22. Then, the room air is sucked by the fan 22 and introduced into the room air from the room air port 14, passes through the room-side flow path 12, and flows into the fan 22.
Then, the gas is exhausted to the outside from the outside air port 13 through the outside air side flow passage 11.

The indoor side flow passage 12 is closed on the upstream side of the fan 22, and the outside air side flow passage 11 is closed on the downstream side of the fan 22. At this time, on the upstream side of the fan 22, the outside air flow passage 1
1 opens, and the indoor side flow passage 12 opens downstream of the fan 22. Then, the fan 22 sucks the air into the outside air outlet 13
The outside air is introduced from the outside and flows through the outside air side flow passage 11 to the fan 22.
Then, the outside air is introduced into the room from the indoor air port 14 through the indoor side flow path 12.

Next, the operation of the embodiment of the present invention will be described. When the opening / closing motion sensing device RE senses the opening / closing of the door, it transmits a signal to that effect to the control device C. The atmospheric pressure detected by the atmospheric pressure sensors P1S and P0S is transmitted to the control device. The control device C calculates the pressure difference. The controller is
Operate the forced intake and exhaust device based on these received signals,
Adjust the room pressure. The indoor pressure is slowly changed when there is a change in altitude difference, and when opening the door, the pressure is controlled to be the same as the outside, and when closed, the inside pressure is controlled to be low to facilitate opening and closing.

(Embodiment) 1. Insert a key into the door. The fan 22 is turned on for 1 minute. The indoor pressure control is indoor air P1 = outdoor air P0. 2. When the door is opened, the pressure difference between inside and outside disappears, and the indoor pressure control becomes P1 = P0. 3. When the door is closed, the fan 22 is turned on. The room pressure is controlled so that P1 <P0. 4. Insert the engine key. Room pressure control P1 = P0. 5. Start the engine. The fan 22 is turned on. 6. Drive a car. The fan 22 is turned on. 7. Stop the engine. The fan 22 is turned off. (In the situation of 5 to 7, the room pressure control is dp0 / dt =
When 0, P1 = ∫dp1 / dt · d until P1 = P0
When t, dp0 / dt ≠ 0, P1 = ∫adp0 / dt · d
t (0 <a <1). ) 8. Remove the engine key. The fan 22 is turned on for 1 minute. The room pressure control is P1 = P0. 9. When the door is opened, there is no pressure difference between the inside and outside, and P1 = P0. 10. When the door starts to be closed, the fan 22 is turned on and the indoor pressure is controlled to be P1 <P0.

[0017]

EFFECT OF THE INVENTION It becomes easy to open and close the automobile door, and it becomes possible to cope with changes in atmospheric pressure outside the room.

[Brief description of drawings]

FIG. 1 is a central sectional view of an embodiment of the present invention.

FIG. 2 is a plan view of an embodiment of the present invention.

FIG. 3 is a partially enlarged sectional view of an embodiment of the present invention.

FIG. 4 is a partially enlarged plan view of the embodiment of the present invention.

[Explanation of symbols]

 RE Open / close operation sensing device P0S Barometric pressure sensor P1S Barometric pressure sensor FC Forced intake / exhaust device

Claims (1)

[Claims] 1. An opening / closing operation detection device which is attached to an opening / closing portion of a door and detects an opening / closing operation of a door, an atmospheric pressure sensor which detects a pressure difference between the inside and outside of the door, and which is installed in a car's rugged space and installed inside the vehicle. It features a forced intake / exhaust device that performs intake and exhaust to the outside, and a control device that operates the forced intake / exhaust device based on the information transmitted from the opening / closing operation detection unit and the atmospheric pressure sensor to adjust the vehicle interior pressure. A vehicle interior pressure control device.