JP2006117098A - Air pressure difference absorbing system of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air pressure difference absorbing system of a vehicle capable of reducing generation of wind throb without depending on the shape of a deflector, in particular, by a simple constitution. <P>SOLUTION: This system is provided with an absorbing means for absorbing an air pressure difference inside/outside a cabin coupled with an opening operation of a roof panel 2 for partitioning the cabin and the outside of the vehicle during traveling. As an example, an air conditioning mode of the cabin is switched to a mode set in advance coupled with the open operation of the roof panel 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a system for absorbing a pressure difference between inside and outside of a passenger compartment.

  2. Description of the Related Art Conventionally, in a vehicle equipped with a sunroof device, a phenomenon in which an unpleasant pulsating sound called a wind slob is generated around an opening when a roof panel is opened at a specific vehicle speed range is known. The cause of the occurrence of the wind slob is due to the phenomenon of the airflow due to the influence of the pressure fluctuation around the opening, and specifically, it is said to be due to the frequency characteristics of the vortex generated periodically during the entrainment. Note that the occurrence of wind slob is not limited to when the roof panel is opened, but also occurs when the side window is opened.

In the case of a sunroof device, a technique for providing a deflector that changes the flow of traveling wind at the front edge of an opening is known as a measure against wind slob (see, for example, Patent Documents 1 and 2). Generally, in order to reduce the wind slob with this deflector, it is effective to increase the height dimension of the deflector blade that receives the traveling wind or to increase the inclination angle.
Japanese Utility Model Publication No. 3-52229 (FIG. 3) JP 2000-335248 A (paragraphs [0015], [0016], FIG. 1)

  However, when the height of the deflector blade is increased or the inclination angle is increased, there is a problem that wind noise increases instead of reducing the wind slob, and adopting such a shape of the deflector blade This is also not preferable from the viewpoint of vehicle design. Moreover, the actual situation is that no specific measures have been taken for the wind slob in the side window.

  The present invention was created to solve the above-described problems, and is a vehicle that can reduce wind slob generated when opening and closing bodies such as a roof panel and a side window are opened with a simple configuration. It aims to provide a differential pressure absorption system.

  In order to solve the above-mentioned problems, the present invention is characterized by comprising absorption means for absorbing a pressure difference outside the vehicle interior in conjunction with an opening operation of an opening / closing body that partitions the vehicle compartment from the vehicle exterior during traveling. A vehicle pressure difference absorption system was adopted.

  Wind slob is caused by the pressure difference inside and outside the vehicle during traveling. Therefore, according to the system, when the opening / closing body such as the roof panel or the side window is opened, the pressure difference between the inside and outside of the vehicle interior is automatically absorbed, and the occurrence of wind slob is reduced accordingly.

  According to the present invention, the vehicle pressure difference absorbing system is characterized in that the absorbing means comprises switching means for switching the air conditioning mode of the passenger compartment to a preset mode.

  The air conditioning mode of the passenger compartment refers to the “inside air circulation” mode for circulating air inside the vehicle and the “outside air introduction” mode for taking in air from outside the vehicle. In these two modes, the atmospheric pressure in the room is slightly different. It is known to come. According to the system, it is set by simulation in advance whether the occurrence of wind slobbing is reduced in the “inside air circulation” or “outside air introduction” mode, and is linked to the opening / closing body opening operation. By automatically switching to the mode that reduces this, the occurrence of wind slob can be reduced.

  According to the present invention, the vehicle pressure difference absorption system is characterized in that the switching by the switching means is performed when the roof panel reaches a predetermined open position.

  According to this system, an unnecessary switching of the air-conditioning mode is not performed when the open position where the occurrence of the wind slob is not a problem, that is, when the roof panel is slightly opened.

  Further, the present invention provides a pressure difference absorbing system for a vehicle, wherein the air conditioning mode of the passenger compartment is returned to the mode before switching in conjunction with the closing operation of the opening / closing body.

  According to this system, there is no need for the passenger to manually return the air-conditioning mode to the original state, which is excellent in convenience.

  According to the present invention, there is provided a pressure difference absorbing system for a vehicle, wherein the absorbing means includes a pressure switching valve for discharging air in the passenger compartment to the outside of the passenger compartment.

  By using the pressure switching valve, the occurrence of wind slob can be reduced with a simple configuration.

  According to the present invention, the occurrence of wind slob can be reduced with a simple configuration. Especially in a vehicle having a deflector in a sunroof device, the burden of the function of reducing the wind slob by the deflector can be reduced accordingly. Increases design freedom.

  In the present invention, the “opening / closing body that partitions the passenger compartment from the outside of the vehicle” refers to a thing that is assumed to be opened and closed even during traveling, for example, a roof panel of a sunroof device, a side window (so-called door glass), etc. Doors are not included. Hereinafter, the case of the sunroof device will be mainly described.

  FIG. 1 is a side sectional view for explaining a tilt slide type sunroof device 1. (B) is a state in which the roof panel 2 is fully closed, and the opening 4 formed in the fixed roof 3 is closed. In the case of tilt-up, it tilts backward from this state to the fully open position as shown in FIG. In the case of the slide open, the state is once tilted downward from the state of (b), and in this state, it slides as shown in (c) to reach the fully open position as shown in (d). A slider 5 constituting a tilt slide mechanism is positioned below the roof panel 2, and a drive cable connected to a motor is connected to the slider 5 (not shown). Therefore, when the motor rotates and the slider 5 slides in the front-rear direction via the drive cable, each operation of the roof panel 2 as described above is performed.

  When the roof panel 2 is open as in (a), (c), and (d) in a specific vehicle speed range, the above-described wind slob may occur. As described above, the cause of the wind slob is in the phenomenon of airflow due to the pressure fluctuation around the opening 4, as shown in FIG. 2 (an explanatory side sectional view of a vehicle equipped with the sunroof device 1). Explaining schematically, the traveling air flow W1 flowing along the surface of the fixed roof 3 and the air flow W2 sucked out from the room by the negative pressure interfere with each other mainly at the rear portion of the opening surface, thereby causing periodicity. A pressure fluctuation occurs and this resonates to generate a wind slob.

  As described above, the wind slob is generated due to the pressure difference between the inside and outside of the vehicle interior on the opening surface. The present invention has been made paying attention to this point. Absorbing means that absorbs (reduces) the pressure difference outside and inside the vehicle in conjunction with the opening operation of the opening / closing member that partitions the vehicle and the outside during traveling. The main feature is that it has a pressure difference absorption system.

  According to the absorbing means, when the roof panel 2 is opened, the pressure difference inside and outside the vehicle interior is automatically absorbed, and the generation of wind slob is reduced accordingly. As a specific example of this absorbing means, there is an example configured as switching means for switching the air conditioning mode of the passenger compartment to a preset mode. The air conditioning mode of the passenger compartment in the present invention refers to two modes of “inside air circulation” in which air is circulated in the vehicle and “outside air introduction” in which air is taken in from the outside of the vehicle. This is done by manually operating the air conditioning switch. Note that the use of these two modes varies depending on the user, and is always set to either one, or “outside air introduction” when the air is clear, and in places where exhaust gas is anxious, such as inside a tunnel. There is a case of switching to “inside air circulation”.

  In these two air conditioning modes, it is known that the atmospheric pressure in the room is slightly different. Generally, when “introducing outside air” is selected, the atmospheric pressure tends to increase by the amount of outside air sent into the room. As described above, since the wind slob is generated due to the pressure difference between the inside and outside of the vehicle interior, the generation of the wind slob is reduced in either the “inside air circulation” or “outside air introduction” mode. It is possible to reduce the occurrence of wind slob by previously setting the amount by simulating and automatically switching to the mode of reduction in conjunction with the opening operation of the roof panel 2. For example, when the occurrence of wind slob is reduced in the case of “inside air circulation”, when traveling with the setting of “outside air introduction”, when the roof panel 2 is opened, the “inside air circulation” is forced. By switching to the mode, the occurrence of wind slob can be reduced.

  The means for switching the air conditioning mode in conjunction with the opening operation of the roof panel 2 can be easily achieved by using an existing roof panel 2 opening / closing control system. As a general configuration example of the open / close control system of the roof panel 2, for example, a sensor that outputs a pulse synchronized with the rotation of the drive motor using a Hall IC is installed, and the roof panel 2 is tilted fully open (see FIG. )) Or the slide fully open position (the state shown in FIG. 1 (d)), the position of the roof panel 2 is determined by counting the number of pulses from the stop position as the reference position every time the lock is stopped. Is mentioned. Therefore, in this case, it can be seen from the pulse count value that the roof panel 2 is open, and a signal to that effect is sent to the air conditioning mode switching circuit to switch the air conditioning mode in conjunction with the opening operation of the roof panel 2. It will be easy to do.

  As another example of means for switching the air conditioning mode in conjunction with the opening operation of the roof panel 2, the air conditioning mode is switched based on the ON / OFF signal by interlocking with the open / close switch of the roof panel 2 that is manually operated by the passenger. A configuration for switching and a configuration for switching the air-conditioning mode based on an ON / OFF signal in conjunction with a limit switch that is operated by an opening / closing operation of the roof panel 2 can be given. Also with these configurations, switching of the air-conditioning mode linked to the opening operation of the roof panel 2 can be realized with a simple configuration.

  As described above, if the absorption means is constituted by switching means for switching the air conditioning mode of the passenger compartment to a preset mode in conjunction with the opening operation of the roof panel 2, the occurrence of wind slob can be reduced with a simple configuration. In particular, in a vehicle equipped with a deflector, the burden on the function of reducing the wind slob by the deflector can be reduced accordingly, so that the degree of freedom in designing the deflector is increased. Further, since an existing roof panel opening / closing control system or the like can be used, the system is economical.

  The timing for switching the air-conditioning mode can be set as appropriate. For example, when the occurrence of wind slobe becomes a problem at a predetermined open position or more of the roof panel 2, the roof panel 2 has a predetermined timing. The air conditioning mode may be switched when reaching the open position. In this case, it can be easily achieved by using the above-described open / close control system for the roof panel 2, that is, by determining that the roof panel 2 has reached the predetermined open position from the pulse count value. As described above, when the air conditioning mode is switched when the roof panel 2 reaches the predetermined open position, the open position where the occurrence of wind slob is not a problem, that is, the roof panel 2 is slightly opened. In this case, unnecessary switching of the air conditioning mode is not performed.

  If the air conditioning mode of the passenger compartment is automatically returned to the mode before switching in conjunction with the closing operation of the roof panel 2, it is not necessary for the passenger to manually return the air conditioning mode to the original mode. Excellent.

  In addition, since the occurrence of wind slob is often a problem in a specific vehicle speed range, the air conditioning mode is switched in conjunction with the opening operation of the roof panel 2 only when the vehicle is in the specific vehicle speed range. This eliminates unnecessary switching of the air-conditioning mode.

  Next, as another specific example of the absorbing means, there is a case where it is constituted by a pressure switching valve (not shown) for discharging the air in the passenger compartment to the outside of the passenger compartment. When closing a passenger door, it is known that the air pressure in the passenger compartment, which is a narrow sealed space, suddenly rises momentarily, and accordingly, the door closing operation force requires a large force. The pressure switching valve is provided in order to cope with this problem. When the atmospheric pressure in the passenger compartment becomes higher than a predetermined atmospheric pressure, for example, when the atmospheric pressure becomes higher than the atmospheric pressure, the pressure difference valve is opened as a driving source. And functions to reduce the closing operation force of the door by discharging the air in the passenger compartment to the outside of the passenger compartment. The pressure switching valve is often mounted on a vehicle door, a vehicle body panel, or the like, and is generally mounted at a location that is not touched by the passenger. Although a specific structure is not described here, an elastic thin film valve member described in Japanese Patent Application Laid-Open No. 2003-246214 is an example.

  Therefore, as described above, the wind slob is generated due to the pressure difference between the inside and outside of the vehicle interior. Therefore, by opening the pressure switching valve in conjunction with the opening operation of the roof panel 2, It is possible to reduce the occurrence of wind slob. Since the pressure switching valve is configured to open with the atmospheric pressure difference as a driving source as described above, a method such as providing a driving motor or the like separately is employed when interlocking with the opening operation of the roof panel 2. . Thus, even if it comprises a pressure switching valve as an absorption means, generation | occurrence | production of a wind slob can be reduced with a simple structure.

  Further, even when the pressure switching valve is configured as the absorbing means, for example, when the occurrence of wind slobe becomes a problem at or above a predetermined opening position of the roof panel 2, the roof panel 2 is opened to a predetermined level. The pressure switching valve may be operated when the position is reached.

  Although the case where the opening / closing body is the roof panel 2 has been described above, the present invention can also be applied to a side window or the like.

It is side sectional action explanatory drawing of the sunroof apparatus of a tilt slide system. It is side sectional explanatory drawing of the vehicle equipped with the sunroof apparatus.

Explanation of symbols

1 Sunroof device 2 Roof panel 3 Fixed roof

Claims (5)

  An air pressure difference absorption system for a vehicle, comprising an absorbing means for absorbing an air pressure difference between the inside and outside of the vehicle in conjunction with an opening operation of an opening / closing member that partitions the vehicle and the outside of the vehicle during traveling.   2. The vehicle pressure difference absorbing system according to claim 1, wherein the absorbing means comprises switching means for switching the air conditioning mode of the passenger compartment to a preset mode.   The pressure difference absorption system for a vehicle according to claim 2, wherein the switching by the switching means is performed when the opening / closing body reaches a predetermined open position.   4. The vehicle pressure difference absorption system according to claim 2, wherein the air conditioning mode of the passenger compartment is returned to the mode before switching in conjunction with the closing operation of the opening and closing body.   2. The vehicle pressure difference absorption system according to claim 1, wherein the absorption unit includes a pressure switching valve for discharging air in the passenger compartment to the outside of the passenger compartment. 3.

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