JP2007196710A - Indoor and outdoor air pressure difference reduction device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent deterioration of a door opening property due to lowering of indoor air pressure in access door opening motion of a vehicle high in airtightness. <P>SOLUTION: This indoor and outdoor air pressure difference reduction device is devised to detect a state immediately before opening each of door parts in a state where each of the door parts, of the vehicle high in airtightness, of a type which an occupant pulls and opens is totally closed, and to open a communicating port 40a to communicate the indoor side and the outdoor side with each other differently from an opening part to be opened and closed by each of the door parts when the state is detected. An air pressure difference for outside air to flow in from the communicating port 40a to communicate the indoor side and the outdoor side with each other by the air pressure difference is immediately eliminated when the indoor air pressure is instantly lowered in opening the door part and the air pressure difference is made between the indoor and the outdoor sides, and the occupant never feels hardness to open the access door. Consequently, it is possible to prevent deterioration of the door opening property due to lowering of the indoor air pressure in the access door opening motion of the vehicle high in airtightness. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  [Technical Field] The present invention relates to a vehicle interior / external air pressure difference reduction device that prevents deterioration of door opening performance due to a decrease in vehicle interior pressure when an occupant entrance / exit door (hereinafter referred to as a passenger door) of a highly airtight vehicle such as a passenger car is opened. It is about.

  As shown in FIG. 1, a normal vehicle is provided with a duct quarter vent 40 that is an exhaust port for air in the passenger compartment, and an exhaust door (universal door) (not shown) provided on the duct quarter vent when the passenger door is closed. By opening the door and discharging the air in the passenger compartment, the pressure inside the passenger compartment is prevented from rising and the door closing performance of the passenger door is improved. This exhaust door is a one-way valve in the direction toward the outside of the vehicle, and prevents exhaust gas and dust from entering the vehicle interior from the outside of the vehicle.

The following patent documents 1 and 2 are known as conventional techniques related to opening and closing of a vehicle entrance door. Patent Document 1 detects whether or not a window is fully closed when the passenger door is opened. If the door is fully closed, the door is closed by opening a predetermined amount to prevent an increase in vehicle interior pressure when closing the passenger door. In order to prevent contaminants from entering the vehicle interior, Patent Document 2 uses a permeable membrane for the ventilation part outside the vehicle interior, and this permeable membrane deteriorates the opening / closing performance of the entrance door. In order to prevent this, a pressure change absorption mechanism is separately provided.
Japanese Patent Laid-Open No. 10-147146 JP 2004-203367 A

  However, as described above, the exhaust door (universal door) provided on the duct quarter vent is a valve door in one direction outward of the vehicle, so in a highly sealed vehicle, the air pressure in the passenger compartment is instantaneously opened when the entrance door is opened. There is a problem that the passenger feels difficult to open the entrance door. The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to prevent the deterioration of door opening performance due to a decrease in vehicle interior pressure when a passenger door opening operation of a high-density vehicle is performed. An object of the present invention is to provide a vehicle interior / external air pressure difference reducing device.

  In order to achieve the above object, the present invention employs technical means described in claims 1 to 16. That is, according to the first aspect of the present invention, when each door part of a type that is opened by a passenger of a highly airtight vehicle is fully closed, the state immediately before opening each door part is detected and the state is detected. Unlike the openings that are opened and closed by the doors, the communication ports (11a, 40a) that allow the vehicle interior and the vehicle exterior to communicate with each other are opened.

  According to the first aspect of the present invention, when the air pressure in the passenger compartment is instantaneously lowered when the door portion is opened and a pressure difference occurs between the outside and the outside of the vehicle, the communication port (11a 40a), since the outside air flows in, the pressure difference is eliminated immediately, and the passenger does not feel difficult to open the entrance door. Therefore, it is possible to prevent the door opening performance from deteriorating due to a decrease in the cabin air pressure during the opening / closing door opening operation of a high-density vehicle.

  According to a second aspect of the present invention, in the vehicle interior / exterior air pressure difference reducing device according to the first aspect, an air pressure difference detection means for detecting a pressure difference between the vehicle interior and the exterior of the vehicle is provided, and the pressure difference detection means detects the pressure difference. The communication port (11a, 40a) is opened when the atmospheric pressure difference is greater than or equal to a predetermined value.

  According to the second aspect of the present invention, for example, when the air pressure in the vehicle interior increases due to an increase in the vehicle interior temperature and the air pressure difference outside the vehicle interior increases, the air pressure difference detection means is provided and the air pressure is detected. By detecting the difference and opening the communication ports (11a, 40a) that communicate with the outside of the vehicle, it is possible to eliminate the increase in the pressure inside the vehicle interior. Therefore, the passenger does not feel uncomfortable feeling due to the increase in the air pressure in the passenger compartment.

  Further, in the invention described in claim 3, in the vehicle interior / external air pressure difference reducing device according to claim 1, the communication ports (11a, 40a) are opened when the airbag device in the vehicle interior is activated. It is characterized by. This is because when the air density in the vehicle interior is high, the air pressure in the vehicle interior becomes high when the air bag is activated, and the impact on the passenger increases. However, according to the third aspect of the present invention, it is possible to suppress an increase in the air pressure in the vehicle interior by opening the communication ports (11a, 40a) communicating with the outside of the vehicle when the airbag is operated. Therefore, the impact given to the passenger by the operation of the airbag device can be reduced.

  According to a fourth aspect of the present invention, in the vehicle interior / outside air pressure difference reducing device according to any one of the first to third aspects, the inside air discharge port of the duct quarter vent (40) is used as the communication port. (40a) is used. According to the fourth aspect of the present invention, the inside air discharge port (40a) of the duct quarter vent (40) provided in a normal vehicle is not only used when the pressure inside the passenger compartment increases, but also when the pressure decreases. In this case, it can be used as a communication port (40a) for communicating with the outside of the vehicle. Therefore, since there are few structural changes of a vehicle, application is easy and cost can be held down.

  Further, in the invention according to claim 5, in the vehicle interior / external air pressure difference reducing device according to any one of claims 1 to 3, outside air introduction of the inside / outside air switching means (11) is used as a communication port. It is characterized by using the mouth (11a).

  According to the fifth aspect of the present invention, the inside / outside air switching means (11) provided in a normal vehicle is used, and when the inside air circulation mode is set, the outside air introduction mode is switched to the outside air introduction mode. (11a) is used as a communication port (11a) communicating with the outside of the vehicle. Therefore, since there are few structural changes of a vehicle, application is easy and cost can be held down. The opening degree of the outside air introduction port (11a) may be varied according to the atmospheric pressure difference, for example, the opening degree is increased when the atmospheric pressure difference is large and the opening degree is decreased when the atmospheric pressure difference is small.

  According to a sixth aspect of the present invention, in the vehicle interior / external air pressure difference reducing device according to any one of the first to third aspects, a vehicle window is used as the communication port. It is said. According to this invention of Claim 6, it uses as a communication port connected with the exterior of a vehicle using the window part provided in the normal vehicle. Therefore, since there are few structural changes of a vehicle, application is easy and cost can be held down. Note that the opening degree of the window portion may be varied according to the atmospheric pressure difference, for example, the opening degree is increased when the atmospheric pressure difference is large and the opening degree is decreased when the atmospheric pressure difference is small.

  According to a seventh aspect of the present invention, in the vehicle interior / external air pressure difference reducing device according to any one of the first to third aspects, the communication port is provided in a door portion of the vehicle body. It is said.

  The invention described in claim 8 is characterized in that, in the vehicle interior / external air pressure difference reducing device according to any one of claims 1 to 3, the communication port is provided in a ceiling portion of the vehicle body. It is said.

  The invention described in claim 9 is characterized in that, in the vehicle interior / external air pressure difference reducing device according to any one of claims 1 to 3, the communication port is provided in a floor portion of the vehicle body. It is said.

  According to the inventions of the seventh to ninth aspects, by providing a communication port in a part of the vehicle body, for example, a door portion, a ceiling portion, a floor portion, etc., and opening and closing the communication port to communicate with the outside of the vehicle. Can achieve the same effects as described above. The opening degree of the communication port may be varied according to the atmospheric pressure difference, for example, the opening degree is increased when the atmospheric pressure difference is large, and the opening degree is decreased when the atmospheric pressure difference is small.

In the invention according to claim 10, the vehicle having high airtightness is provided with pressurizing means for increasing the air pressure in the passenger compartment,
When the doors of the type that the vehicle occupant pulls open are fully closed, the state immediately before opening each door is detected, and the pressurizing means is driven when the state is detected It is said.

  According to the tenth aspect of the present invention, rather than communicating with the outside of the vehicle, the pressurizing means is provided in the vehicle interior, and the pressurizing means is driven in response to a decrease in the air pressure in the vehicle interior when the door portion is opened. By doing so, the pressure difference is reduced, and the passenger does not feel the difficulty of opening the passenger door. Therefore, it is possible to prevent the door opening performance from deteriorating due to a decrease in the cabin air pressure during the opening / closing door opening operation of a high-density vehicle.

  Further, in the invention described in claim 11, in the vehicle interior / exterior air pressure difference reducing device according to claim 1 or 10, the vehicle exterior side of each door portion is used as a detection means for detecting a state immediately before the door portion is opened. The sensor means (43) provided on the inside of the door handle (H) disposed on the door is used.

  According to a twelfth aspect of the present invention, in the vehicle interior / external air pressure difference reducing device according to the first or tenth aspect, the vehicle exterior side of each door portion is used as a detection means for detecting a state immediately before the door portion is opened. The switch means (S) provided on the inside of the door handle (H) arranged on the door is used.

  According to the invention described in claim 11 or claim 12, the sensor means (43) or the switch means (S) is arranged inside the door handle (H) arranged on the vehicle exterior side of each door portion. It is possible to detect that a hand has been put on the door handle (H) on the outside of the door and to detect a state immediately before opening the door from the outside of the vehicle.

  According to a thirteenth aspect of the present invention, in the vehicle interior / external air pressure difference reducing device according to the first or tenth aspect, the vehicle compartment of each door portion is used as a detection means for detecting a state immediately before the door portion is opened. The sensor means (43) provided inside the door unlocking lever (L) arranged on the side is used.

  Further, in the invention described in claim 14, in the vehicle interior / external air pressure difference reducing device according to claim 1 or 10, the vehicle interior of each door portion is used as a detection means for detecting a state immediately before the door portion is opened. The switch means (S) provided inside the door unlocking lever (L) arranged on the side is used.

  According to the invention described in claim 13 or claim 14, the sensor means (43) or the switch means (S) is arranged inside the door unlocking lever (L) arranged on the vehicle compartment side of each door portion. By doing so, it is possible to detect that a hand has been put on the door unlocking lever (L) inside the door portion, and it is possible to detect a state immediately before the door portion is opened from the inside of the vehicle.

  Further, in the invention described in claim 15, in the vehicle interior / external air pressure difference reducing device described in claim 1 or claim 10, the doors are unlocked as detection means for detecting a state immediately before the door is opened. It is characterized by the use of signals. According to the invention described in claim 15, all or a plurality of door portions are unlocked by a key operation from outside the vehicle, a wireless signal, or a switch operation in the vehicle. With this signal, it is possible to detect the state immediately before opening the door.

  According to a sixteenth aspect of the present invention, in the vehicle interior / exterior atmospheric pressure difference reducing device according to the first or the tenth aspect, any one of the vehicle interiors is used as a detection means for detecting a state immediately before the door portion is opened. The switch means (S) is provided at the site and operated before the occupant opens the door.

  According to the sixteenth aspect of the present invention, in addition to the unlocking switch for the door lock, for example, the switch means (S) is provided on the master switch board, the steering wheel, the shift lever, each door portion, etc. Even if it is operated before opening the door, it is possible to detect the state immediately before the door is opened. Incidentally, the reference numerals in parentheses of the above means are examples showing the correspondence with the specific means described in the embodiments described later.

(First embodiment)
Hereinafter, a first embodiment of the present invention (application examples of claims 1, 4, 9, and 11 to 14) will be described in detail with reference to FIGS. FIG. 1 is a perspective view of a vehicle according to a first embodiment of the present invention. 2 is a schematic diagram showing the structure of the duct quarter vent 40 as the vehicle interior / outside air pressure difference reducing device shown in FIG. 1, wherein (a) shows a normal time and (b) shows a time when the passenger door is opened. ing.

  First, in a vehicle with high air density, as shown in FIG. 1, duct quarter vents 40 as exhaust ports for air in the passenger compartment are provided at the lower portions on both sides of the rear portion of the vehicle. As shown in FIG. 2A, the duct quarter vent 40 is provided with a free door 41 at an inside air discharge port 40a that leads from the passenger compartment side to the vehicle outer side.

  The universal door 41 is normally a one-way valve to the outside of the vehicle, and exhausts air after taking in an outside air introduction port 11a, which will be described later, and air-conditioning the interior of the vehicle, to the outside of the vehicle, and exhaust gas and dust from the outside Etc. are prevented from entering the passenger compartment. Further, when the door portion of the vehicle is closed, the universal door 41 is opened by the air pressure in the passenger compartment that is instantaneously increased, and the door closing performance is improved by discharging the air in the passenger compartment to suppress the increase in the air pressure.

  In the present embodiment, an electromagnetic solenoid 42 is provided as a stopper for the free door 41 on the indoor side of the inside air discharge port 40a. In a normal state shown in FIG. 2 (a), the stopper 42 is engaged (taken out) to provide a one-way valve in the vehicle outward direction.

  Next, as an operation related to the present invention, each door portion (including a rear door that communicates with the vehicle interior) and each window portion (including a ceiling window portion) that are not shown in the figure are fully closed. The immediately preceding state is detected, and when the state is detected, the inside air discharge port 40a that allows the vehicle interior and the outside of the vehicle to communicate with each other is opened as the communication port 40a.

  FIG. 2B shows the time when the passenger door is opened. The universal door 41 is opened to the passenger compartment side by removing (pulling) the stopper of the universal door 41 by the electromagnetic solenoid 42 described above. As a result, when the pressure in the passenger compartment drops momentarily when the door is opened and a pressure difference occurs between the outside and the outside of the vehicle, the outside air flows in from the communication port 40a communicating with the outside of the vehicle due to the pressure difference, and the pressure difference is immediately Will be resolved.

  However, the structure of the duct quarter vent 40 described above is an example embodying the present invention, and is not limited to this structure. For example, the door 41 may be opened and closed electrically. In this way, communication between the vehicle interior and the outside of the vehicle can be established when a state immediately before opening at any one of the door portions is detected.

  An example of means for detecting the state immediately before opening at each door is shown in FIG. FIG. 3A is a perspective view of a door handle H portion outside the entrance door, and FIG. 3B is a perspective view of a door unlocking lever L portion inside the entrance door. Inside each door handle H and door unlocking lever L, for example, sensor means 43 such as an infrared sensor or switch means S is provided.

  Thereby, it can be detected that the door handle H or the door unlocking lever L has been put on the hand from outside or inside the vehicle, and it can be detected as a state immediately before the door is opened. In FIG. 3, two detection means are provided, but the number is not limited. These detection signals are input to a control device (not shown) of the vehicle interior / external air pressure difference reduction device, and the electromagnetic solenoid 42 and the like are controlled by signals from the control device.

  Next, an outline of the operation of the vehicle interior / external air pressure difference reducing device by the control device will be described. FIG. 4 is a flowchart showing the operation of the duct quarter vent 40 of FIG. First, in step S11, it is determined whether or not a state immediately before opening the door is detected. If the determination result is NO and the state immediately before the door is open is not detected, the process returns to repeat this determination.

  And when the determination result in step S11 is YES and the state immediately before the door portion is opened, the process proceeds to step S12. In step S12, the inner stopper 42 of the universal door 41 is released. As a result, the free door 41 can be freely opened not only on the vehicle exterior but also on the vehicle interior side, and air is circulated until the pressure difference is eliminated according to the pressure difference between the vehicle interior and the exterior of the vehicle.

  In the next step S13, it is determined whether or not it is detected that the door portion opened from the courtesy lamp switch (not shown) of the door portion is closed again. If the determination result is NO and the closing of the door is not detected, the process returns to repeat this determination. Then, if the determination result in step S13 is YES and the closing of the door is detected, the process proceeds to step S14, and in step S14, the operation of returning the inner stopper 42 to the universal door 41 is performed.

  However, since the above-described operation is based on the premise that the doors and windows of the vehicle are fully closed and the cabin is airtight, any one of the windows is opened by a predetermined amount or more. In this case, or when the inside / outside air switching device 11 described later is in the outside air introduction mode, the operation of this embodiment may be canceled.

  Next, features and effects of this embodiment will be described. First, when each door portion of the type that is opened by a passenger of a highly airtight vehicle is fully closed, the state immediately before opening each door portion is detected, and when that state is detected, it is opened and closed by each door portion. Unlike the opening, a communication port 40a that allows communication between the vehicle interior and the outside of the vehicle is opened.

  If the air pressure in the passenger compartment drops momentarily when the door is opened and a pressure difference occurs between the outside and the outside of the vehicle, the air pressure flows away from the communication port 40a communicating with the outside of the vehicle due to the pressure difference. The passengers do not feel difficult to open the entrance door. Therefore, according to this, it is possible to prevent the door opening performance from deteriorating due to a decrease in the cabin air pressure during the opening / closing door opening operation of a vehicle with high airtightness.

  Moreover, the inside air discharge port 40a of the duct quarter vent 40 is used as a communication port. This is because the inside air discharge port 40a of the duct quarter vent 40 provided in a normal vehicle can be used not only as a pressure inside the vehicle interior but also as a communication port 40a for communicating with the outside of the vehicle when the pressure falls. It is what you want to do. According to this, since there are few structural changes of a vehicle, application is easy and cost can be held down.

  Further, sensor means 43 or switch means S provided on the inside of a door handle H disposed on the vehicle exterior side of each door portion is used as detection means for detecting a state immediately before opening the door portion. According to this, by arranging the sensor means 43 or the switch means S inside the door handle H arranged outside the door of each door part, it is detected that a hand has been put on the door handle H outside the door part. Thus, it is possible to detect a state immediately before the door is opened from the outside of the vehicle.

  Moreover, the sensor means 43 or the switch means S provided inside the door unlocking lever L distribute | arranged to the compartment side of each door part is used as a detection means which detects the state immediately before opening a door part. According to this, by placing the sensor means 43 or the switch means S inside the door unlocking lever L arranged on the passenger compartment side of each door part, the hand unlocking lever L inside the door part is hooked. It is possible to detect the state immediately before opening the door portion from the inside of the vehicle.

(Second Embodiment)
FIG. 5 is a schematic diagram showing a configuration and structure of a vehicle air conditioner having an inside / outside air switching device 11 as a vehicle interior / external air pressure difference reducing device according to a second embodiment (application example of claims 1 and 5) of the present invention. It is. The vehicle air conditioner of this embodiment is applied to a vehicle equipped with a water-cooled vehicle travel engine (hereinafter abbreviated as engine) 4.

  First, in FIG. 5, the refrigeration cycle R of the vehicle air conditioner is provided with a compressor (refrigerant compressor) 1 that sucks, compresses and discharges the refrigerant. The compressor 1 has an electromagnetic clutch 2 for power interruption, and the power of the engine 4 is transmitted to the compressor 1 via the electromagnetic clutch 2 and the V belt 3.

  Energization of the electromagnetic clutch 2 is controlled by an air conditioning control device (not shown). When the electromagnetic clutch 2 is energized and connected, the compressor 1 enters an operating state. On the other hand, when the energization of the electromagnetic clutch 2 is cut off and the disengaged state is established, the compressor 1 stops. The high-temperature and high-pressure gas refrigerant discharged from the compressor 1 flows into a condenser (refrigerant condenser) 6, where it exchanges heat with outside air cooling air blown from a cooling fan (not shown), and the refrigerant is cooled and condensed.

  The refrigerant condensed in the condenser 6 then flows into the receiver 7, where the gas-liquid refrigerant is separated inside the receiver 7, and excess refrigerant (liquid refrigerant) in the refrigeration cycle R is stored in the receiver 7. . The liquid refrigerant from the receiver 7 is depressurized to a low pressure by an expansion valve 8 as a depressurizing means, and becomes a low-pressure gas-liquid two-phase state.

  The low-pressure refrigerant from the expansion valve 8 flows into an evaporator (refrigerant evaporator) 9 as a heat exchanger for air cooling. The evaporator 9 is installed in the air conditioning case 10 of the vehicle air conditioner, and the low-pressure refrigerant that has flowed into the evaporator 9 absorbs heat from the air flowing in the air conditioning case 10 and evaporates. The refrigerant outlet of the evaporator 9 is connected to the suction side of the compressor 1, and a closed circuit is constituted by the above-described cycle components.

  In the air conditioning case 10, a blower unit unit 5 as a blowing unit is disposed on the upstream side of the evaporator 9, and the blower unit unit 5 includes a blower fan 14 a and a fan motor 14 b that drives the blower fan 14 a. An inside / outside air switching device 11 as inside / outside air switching means is arranged on the suction side of the blower fan 14a, and the inside / outside air switching door 12 in the inside / outside air switching box 11 switches between the outside air introduction port 11a and the inside air introduction port 11b. Opened and closed.

  As a result, introduction of outside air (vehicle compartment outside air) or inside air (vehicle compartment air) into the inside / outside air switching box 11 is switched. The inside / outside air switching door 12 is rotated by an actuator such as an inside / outside air switching servo motor (not shown) attached to the outer surface of the inside / outside air switching box 11.

  Next, the air-conditioning unit part 15 arrange | positioned in the downstream of the air blower unit part 5 among air-conditioner ventilation systems is demonstrated. The air conditioning unit 15 is usually disposed at a substantially central position in the vehicle width direction inside the instrument panel in the front part of the vehicle interior. On the other hand, the previous blower unit unit 5 is arranged offset to the passenger seat side with respect to the air conditioning unit unit 15.

  In the air conditioning case 10, an air mix door 19 is disposed on the downstream side of the evaporator 9, and on the downstream side of the air mix door 19, for heating the air by using the cooling water (hot water) of the engine 4 as a heat source. A hot water heater core (hereinafter abbreviated as a heater core) 20 as a heat exchanger is installed. A bypass passage 21 that bypasses the heater core 20 and flows cool air is formed above the heater core 20.

  The air mix door 19 adjusts the air volume ratio between the warm air passing through the heater core 20 and the cool air passing through the bypass passage 21, and the temperature of the air blown out into the vehicle interior by adjusting the air volume ratio of the cold / hot air. Is adjusted. That is, in the present embodiment, the air mix door 19 constitutes a temperature adjusting means for the air blown into the vehicle interior.

  The air mix door 19 is rotated by an actuator such as an air mix servo motor (not shown) attached to the outer surface of the air conditioning case 10 or a wire connected to a manual lever of a control panel in the vehicle compartment. . A hot air passage 23 extending from the lower side to the upper side is formed on the downstream side of the heater core 20, and the hot air from the hot air passage 23 and the cold air from the bypass passage 21 are mixed in the vicinity of the air mixing unit 24. Thus, air for air conditioning at a desired temperature can be created.

  Further, in the air conditioning case 10, a blowing mode switching unit is configured on the downstream side of the air mixing unit 24. First, a defroster opening 25 is formed on the upper surface of the air conditioning case 10. The defroster opening 25 is connected to a defroster outlet (not shown) through which air is blown to the inner surface of the vehicle front window glass via a defroster duct (not shown). The defroster opening 25 is opened and closed by a rotatable plate-like defroster door 26.

  In addition, a face opening 27 is formed on the upper surface of the air-conditioning case 10 at a position on the vehicle rear side from the defroster opening 25. The face opening 27 is connected to a center face air outlet and a side face air outlet (not shown) through which air is blown out toward the upper body of the passenger in the vehicle cabin via a face duct (not shown). The face opening 27 is opened and closed by a rotatable plate-like face door 28.

  In the air conditioning case 10, a foot opening 29 is formed below the face opening 27. The foot opening 29 is connected to a foot outlet (not shown) through which air is blown out toward the feet of passengers in the vehicle cabin via a foot duct (not shown). The foot opening 29 is opened and closed by a rotatable plate-like foot door 30.

  The above-described blow mode doors 26, 28, and 30 are connected to each other by a common link mechanism (not shown). The pivoting operation of the link mechanism is performed by an actuator such as a mode switching servo motor (not shown) attached to the outer surface of the air conditioning case 10 or a wire connected to a manual lever of a control panel in the vehicle interior.

  Next, an outline of the operation of the vehicle interior / external air pressure difference reducing device by the control device will be described. FIG. 6 is a flowchart showing the operation of the inside / outside air switching device 11 of FIG. First, in step S21, it is determined whether or not a state immediately before the door portion is opened is detected. If the determination result is NO and the state immediately before the door is open is not detected, the process returns to repeat this determination.

  And when the determination result in step S21 is YES and the state immediately before the door is opened, the process proceeds to step S22, and it is next determined whether or not the outside air introduction mode is set. If the determination result is YES and the outside air introduction mode is set, no action is required, so the process returns and waits repeatedly from the determination in step S21.

  If the determination result in step S22 is NO and the inside air introduction mode is set, the process proceeds to step S23. In step S23, the inside / outside air switching door 12 is driven to the inside air side to set the outside air introduction mode. is there. As a result, air flows until the pressure difference is eliminated according to the pressure difference between the vehicle interior and the outside of the vehicle.

  In the next step S24, it is determined whether or not it has been detected that the door part opened from the courtesy lamp switch (not shown) of the door part is closed again. If the determination result is NO and the closing of the door is not detected, the process returns to repeat this determination. And when the determination result in step S24 is YES and the closing of the door portion is detected, the process proceeds to step S25, and the inside / outside air switching door 12 driven to the inside air side in step S23 is driven to the outside air side. Return to the inside air introduction mode.

  Next, features that are different from the first embodiment will be described. In this embodiment, when each door portion of the type that is opened by a passenger of a highly airtight vehicle is fully closed, the state immediately before opening each door portion is detected, and when that state is detected, Unlike the opening that is opened and closed, a communication port 11a that allows communication between the vehicle interior and the outside of the vehicle is opened.

  If the air pressure in the passenger compartment drops momentarily when the door is opened and a pressure difference occurs between the outside and the outside of the vehicle, the atmospheric pressure flows away from the communication port 11a communicating with the outside of the vehicle due to the pressure difference, so the pressure difference is immediately eliminated. The passengers do not feel difficult to open the entrance door. Therefore, according to this, it is possible to prevent the door opening performance from deteriorating due to a decrease in the cabin air pressure during the opening / closing door opening operation of a vehicle with high airtightness.

  Moreover, the outside air introduction port 11a of the inside / outside air switching device 11 is used as the communication port. This uses an inside / outside air switching device 11 provided in a normal vehicle, switches to the outside air introduction mode when in the inside air circulation mode, and uses the outside air introduction port 11a as a communication port 11a communicating with the outside of the vehicle. Is.

  According to this, since there are few structural changes of a vehicle, application is easy and cost can be held down. The opening degree of the outside air introduction port 11a may be varied according to the atmospheric pressure difference, for example, the opening degree is increased when the atmospheric pressure difference is large and the opening degree is decreased when the atmospheric pressure difference is small. Moreover, the structure of the vehicle air conditioner described above is an example in applying the present invention, and is not limited to this structure.

(Other embodiments)
A vehicle window may be used as the communication port. This is used as a communication port that communicates with the outside of the vehicle by using a window provided in a normal vehicle. According to this, since there are few structural changes of a vehicle, application is easy and cost can be held down. Note that the opening degree of the window portion may be varied according to the atmospheric pressure difference, for example, the opening degree is increased when the atmospheric pressure difference is large and the opening degree is decreased when the atmospheric pressure difference is small.

  Alternatively, a communication port provided in any part of the door portion, ceiling portion, or floor portion of the vehicle body may be used as the communication port. In this case, a communication port is provided on any one of the door, ceiling, and floor of the vehicle body, and the communication port is opened and closed to communicate with the outside of the vehicle. Also by this, the same effect as each embodiment mentioned above can be produced. The opening degree of the communication port may be varied according to the atmospheric pressure difference, for example, the opening degree is increased when the atmospheric pressure difference is large, and the opening degree is decreased when the atmospheric pressure difference is small.

  Further, as a pressure difference detecting means for detecting a pressure difference between the passenger compartment and the outside of the vehicle, for example, a pressure sensor (not shown) is provided inside and outside the passenger compartment, and the pressure difference detected by the pressure difference detecting means is equal to or greater than a predetermined value. You may make it open a communicating port. This is because, for example, when the air pressure inside the vehicle interior rises due to a rise in the vehicle interior temperature and the air pressure difference outside the vehicle interior increases, a pressure difference detection means is provided to detect the air pressure difference and communicate with the outside of the vehicle. By opening the communication port, the pressure increase in the passenger compartment can be eliminated. Therefore, according to this, a passenger | crew does not feel the discomfort by the atmospheric pressure in a vehicle interior rising.

  Further, the communication port may be opened when the airbag device in the vehicle interior is activated. This is because when the air density in the vehicle interior is high, the air pressure in the vehicle interior becomes high when the air bag is activated, and the impact on the passenger increases. Therefore, an increase in the air pressure in the passenger compartment can be suppressed by opening a communication port that communicates with the outside of the vehicle when the airbag is activated. Therefore, according to this, the impact given to a passenger | crew by the action | operation of an airbag apparatus can be reduced.

  In addition, a highly airtight vehicle is provided with pressurizing means to increase the air pressure in the passenger compartment, and the state immediately before opening each door part is detected when each door part of the type that the passenger of the vehicle pulls and opens is fully closed However, the pressurizing means may be driven when the state is detected. As the pressurizing means, for example, a pressurizing pump may be used.

  This is not communicating with the outside of the vehicle, but a pressure means is provided in the vehicle interior, and the pressure difference is reduced by driving the pressure means in response to the pressure in the vehicle interior decreasing when the door portion is opened, The passenger does not feel difficult to open the entrance door. Therefore, according to this, it is possible to prevent the door opening performance from deteriorating due to a decrease in the cabin air pressure during the opening / closing door opening operation of a vehicle with high airtightness.

  FIG. 7 is a perspective view of a key 44 used for door opening detection as another embodiment of the present invention. As a detection means for detecting a state immediately before opening the door portion, an unlock signal of each door portion may be used. According to this, all of a plurality of door parts or a door lock of any one of the door parts is performed by a key operation from outside the vehicle, a wireless signal by pressing a switch part 44a of the key 44, or a switch operation in the car. It is possible to detect a state immediately before opening the door with a signal that is released.

  FIG. 8 is a perspective view of (a) a master switch board, (b) steering, and (c) shift lever provided with a door opening switch S as another embodiment of the present invention. As described above, the detecting means for detecting the state immediately before opening the door portion may be a switch means S that is provided in any part of the vehicle interior and operated before the occupant opens the door portion.

  According to this, in addition to the unlocking switch for the door lock, for example, the switch means S is provided on the master switch board, the steering wheel, the shift lever, each door part, etc., and the occupant operates it before opening the door part. It is also possible to detect the state immediately before opening the door. In the above-described embodiment, the present invention has been described on the premise of the door portion rotating at the hinge portion with the vehicle body, but the present invention is not limited to the above-described embodiment, and is applied to the slide door portion. You may do it.

1 is a perspective view of a vehicle according to a first embodiment of the present invention. It is a schematic diagram which shows the structure of the duct quarter vent 40 as a vehicle interior / external atmospheric pressure difference reducing apparatus shown in FIG. 1, (a) is normal time, (b) has shown the time of a passenger door opening. (A) is the door handle H part outside a passenger door, (b) is a perspective view of the door unlocking lever L part inside a passenger door. It is a flowchart which shows the action | operation of the duct quarter vent 40 of FIG. It is a schematic diagram which shows the structure and structure of the vehicle air conditioner which has the internal / external air switching device 11 as a vehicle interior / external air pressure difference reducing device in 2nd Embodiment of this invention. It is a flowchart which shows the action | operation of the inside / outside air switching apparatus 11 of FIG. It is a perspective view of the key 44 used for door opening detection as other embodiment of this invention. It is a perspective view of (a) master switch board which provided door opening switch S as other embodiments of the present invention, (b) steering, and (c) shift lever.

Explanation of symbols

11 ... Inside / outside air switching device (inside / outside air switching means)
11a: Outside air introduction port (communication port)
40 ... Duct quarter vent 40a ... Inside air discharge port (communication port)
43 ... Infrared sensor (sensor means)
H ... Door handle L ... Door unlocking lever S ... Switch (switch means)

Claims (16)

  When each door part of the type that is opened by a passenger of a highly airtight vehicle is fully closed, a state immediately before opening each door part is detected, and when the state is detected, the door part is opened and closed by each door part. A vehicle interior / external air pressure difference reduction device characterized in that communication ports (11a, 40a) for communicating between the interior of the vehicle and the exterior of the vehicle are opened, unlike the opening.   Provided with a pressure difference detecting means for detecting a pressure difference between the vehicle interior and the outside of the vehicle so that the communication ports (11a, 40a) are opened when the pressure difference detected by the pressure difference detecting means is a predetermined value or more. The vehicle interior / external air pressure difference reducing device according to claim 1.   The vehicle interior / external air pressure difference reducing device according to claim 1, wherein the communication port (11a, 40a) is opened when the airbag device in the vehicle interior is activated.   The vehicle interior / external air pressure difference reducing device according to any one of claims 1 to 3, wherein an inside air discharge port (40a) of a duct quarter vent (40) is used as the communication port.   The outside air pressure difference reducing device according to any one of claims 1 to 3, wherein an outside air introduction port (11a) of an inside / outside air switching means (11) is used as the communication port. .   The vehicle interior / external pressure difference reducing device according to any one of claims 1 to 3, wherein a window portion of the vehicle is used as the communication port.   The vehicle interior / external pressure difference reducing device according to any one of claims 1 to 3, wherein the communication port is provided in the door portion of a vehicle body.   The vehicle interior / external air pressure difference reducing device according to any one of claims 1 to 3, wherein the communication port is provided in a ceiling portion of a vehicle body.   The vehicle interior / external air pressure difference reducing device according to any one of claims 1 to 3, wherein the communication port is provided in a floor portion of a vehicle body. While providing a pressurizing means for increasing the air pressure in the passenger compartment in a highly airtight vehicle
When each door part of the type that the passenger of the vehicle pulls and opens is in a fully closed state, the state immediately before opening each door part is detected, and when the state is detected, the pressurizing means is driven. A vehicle interior / external air pressure difference reducing device.   The sensor means (43) provided inside the door handle (H) arranged on the vehicle exterior of each door portion is used as detection means for detecting the state immediately before opening the door portion. The vehicle interior / external air pressure difference reducing device according to claim 1.   The switch means (S) provided inside the door handle (H) arranged outside the vehicle of each door portion is used as detection means for detecting the state immediately before opening the door portion. The vehicle interior / external air pressure difference reducing device according to claim 1.   The sensor means (43) provided inside the door unlocking lever (L) arranged on the vehicle compartment side of each door part is used as a detecting means for detecting a state immediately before opening the door part. The vehicle interior / exterior air pressure difference reducing device according to claim 1 or 10.   A switch means (S) provided inside a door unlocking lever (L) disposed on the vehicle compartment side of each door portion is used as a detecting means for detecting a state immediately before opening the door portion. The vehicle interior / exterior air pressure difference reducing device according to claim 1 or 10.   The vehicle interior / external air pressure difference reducing device according to claim 1 or 10, wherein an unlocking signal of each door portion is used as detection means for detecting a state immediately before the door portion is opened.   The detection means for detecting the state immediately before opening the door portion is a switch means (S) provided at any part in the passenger compartment and operated before the passenger opens the door portion. Or the vehicle interior / outside air pressure difference reducing device according to claim 10.

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