JPH0562392U - Anti-slob equipment for automobiles - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the slob noise that occurs when the side window is wide open. [Structure] A turbulence generating plate 3 is provided on an outer surface of a side door 1 and is directed toward a rear portion of a side window 2. The turbulence generation plate 3 is formed in a shape that widens toward the rear. The duct 11 may be used to supply air toward the rear portion of the side window 2 by a traveling wind or a fan to generate turbulence. It is also possible to reduce the degree to which the vehicle compartment functions as a resonance chamber by opening the side window on the opposite side or by using the air communication duct to communicate the atmosphere in the vehicle interior.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an anti-slobbing device for an automobile.

[0002]

[Prior art]

 In recent automobiles, in order to reduce air resistance, the airflow flowing on the vehicle body surface is being rectified as much as possible. In particular, on the side of the vehicle body, it is often practiced to make the side window glass and the vehicle body surface as flush as possible. In addition, in recent automobiles, there are many so-called roof-type ones in which the roof panel has an opening.However, if the roof opening is opened while the vehicle is running, air will come in and out inside and outside the passenger compartment. It causes the occurrence. Therefore, it is possible to prevent the noise by installing a rectifier plate called a deflector immediately in front of the roof opening so that the air in the portion passing through the roof opening flows straight as backward as possible, that is, by rectifying the air. (See, for example, Japanese Utility Model Laid-Open No. 64-10411).

[0003]

[Problems to be solved by the device]

 By the way, there is a case where the side window glass is greatly lowered and the side window is opened widely, and in particular, only one of the left and right side windows is opened and the side window is opened.

In this case, a slob sound also called buffeting noise is generated, which is one problem in noise countermeasures. In particular, this slob sound becomes noticeable in a coupe type vehicle in which the side doors have a long length in the front-rear direction and the side windows extend long in the front-rear direction, and can reach a level of 120 dB or more.

When the cause of the above-mentioned slob sound is pursued, air vibrates in the vehicle width direction at the rear part of the open side window, and the air vibration serves as a vibration source for the vehicle interior to become a kind of resonance chamber. It turned out that

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an anti-slobbing device for an automobile, which can effectively prevent the slobbing noise.

[0007]

[Device configuration]

 In order to achieve the above object, the present invention has the following as a first configuration thereof. That is, the structure is such that a turbulence generating means for generating turbulence of air is provided at the rear part of the side window.

The turbulence generating means can be constituted by, for example, a turbulence generating plate having a shape that widens toward the rear. It can also be configured as a duct that supplies air toward the rear of the side window.In this case, when using traveling wind, the front end of the duct is formed as the traveling air intake, and the rear end is located at the side. Point it towards the rear of the window. Alternatively, a fan may be used to forcibly supply air to the rear of the side window through a duct. In any case, a vortex generating means for generating a vortex can be further installed in the duct.

In order to achieve the above object, the present invention has the second configuration as follows. That is, when one of the left and right side windows is opened by a predetermined opening or more, a communication means for communicating the inside of the vehicle interior with the atmosphere is provided in a part other than the opened side window. It has a unique structure.

As the above-mentioned communication means, for example, a side window glass for a side window opposite to the side window opened by a predetermined opening or more can be forcibly opened. Further, as the communication means, a communication duct for communicating the atmosphere with the vehicle compartment and an opening / closing means for opening and closing the duct are provided, and the communication duct is opened when one side window is opened beyond a predetermined opening. It can also be opened.

[0011]

[Effect of the device]

 With the configuration as described in claim 1, the air vibration in the vehicle width direction at the rear part of the side window, which is the source of the slob sound, disappears or is suppressed, and the slob sound is prevented.

With the configuration as described in claim 6, even if air vibration in the vehicle width direction occurs at the rear portion of the side window, the degree to which the vehicle compartment functions as a resonance chamber is reduced or prevented. Therefore, the slob noise is prevented. Preferred embodiments of the present invention and their advantages will be apparent from the description of the embodiments below.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In FIG. 1, reference numeral 1 is a side door, and 2 is a side window. The side window 1 is fully opened in FIG. 1, and the side window glass for opening and closing the side window 2 is not shown.

A turbulence generation plate 3 is provided below the belt line of the side door 1 and slightly in front of the front-rear direction intermediate portion of the side door 1. As shown in FIGS. 2 and 3, the turbulence generating plate 3 has a triangular shape as a whole, and is integrated with the side door 1 so as to become wider toward the rear.

The turbulence generating plate 3 is oriented toward the rear part of the side window 2. That is, the turbulence generating plate 3 is arranged so as to be positioned outward in the vehicle width direction toward the rear as shown in FIG. 2 when viewed from above, and as shown in FIG. 3 when viewed from the side. As shown, it is inclined so that it is located upward as it goes rearward, and the inclination angle with respect to the horizontal line is indicated by θ.

Now, when the automobile is running, and especially when only one side window 2 is opened by a predetermined opening or more, the air after passing through the front pillar 5 is, as shown in FIG. Attempts to vibrate in the vehicle width direction near the rear. That is, in the air flow, the flow toward the vehicle width direction outer side is shown by a solid line, and the flow toward the vehicle width direction inner side is shown by a broken line. A dimensional flow is generated regularly to excite the air in the passenger compartment to generate a slob sound. In this slob sound, the frequency near 15 HZ gives a peak value of the noise level.

On the other hand, the air passing through the turbulence generating plate 3 becomes a vortex and becomes turbulent, and this vortexed air is supplied to the rear part of the side window 2. As a result, the above-described two-dimensional flow in the vehicle width direction is changed to a three-dimensional flow, and the action of exciting the air in the vehicle interior is eliminated or reduced, and the slob noise is prevented. The state of vortex generation by the turbulence generation plate 3 is shown by the broken line in FIG.

Here, the air flow in the vehicle width direction that generates the above-mentioned slub sound is that the air flow separated from the vehicle body once passing through the front pillar 5 and the door mirror 4 is in front of the B pillar 7. It is considered that this is caused as a result of reattachment to the vehicle body at a position, and therefore, it is also possible to provide a straightening plate for jumping the side window 2 and reattaching the air flow separated after the B pillar 7 to the vehicle body side. Although it is conceivable, it is practically difficult to install such a current plate.

In order to prevent the slob sound, that is, to reduce it to a level that does not cause human discomfort, the energy of the slob sound in the total energy of the noise may be set to 20% or less. Further, since the frequency which is the level peak value of the slob sound is around 15HZ, it is important to effectively reduce the vibration near this 15FZ in order to prevent the slob sound. From such a viewpoint, the size of the turbulence generation plate 3 may be set.

FIG. 5 shows another embodiment of the present invention, in which the turbulence generating plate 3 can be changed between a use position and a storage position. That is, the side door 1 is formed with an opening 1a having a width corresponding to the thickness of the turbulence generating plate 3, and the front end of the turbulence generating plate 3 has a vehicle width about the pin 6 inside the side door 1. It is held by the side door 1 so that it can swing in any direction.

The turbulence generation plate 3 is housed in the side door 1 as shown by the dashed line in FIG. 5 and the use position shown by the solid line in FIG. It can take the stored position.

The turbulence generating plate 3 is oscillated by a motor or the like mounted in the side door 1. More specifically, when it is detected that the side window 2 is opened by a predetermined opening or more during traveling, the control means for controlling the motor causes the turbulence generating plate 3 to be in the use position. Performs motor drive control. When the above conditions are not satisfied, the control means controls the drive of the motor so that the turbulence generation plate 3 is at the storage position.

In this case, as the opening degree of the side window 2 increases and the vehicle speed increases, the slob noise increases, but in order to reduce the air resistance, the turbulence generating plate 3 should not be projected to the outside of the side door 1 as much as possible. Is advantageous, the amount of protrusion of the turbulence generation plate 3 to the outside of the side door 1 can be changed to a continuously variable type or a stepped type according to the opening degree of the side window 2 and the vehicle speed. The turbulence generation plates 3 shown in FIGS. 1 to 5 are provided on both the left and right side doors 1.

FIG. 6 shows another embodiment of the present invention. In this embodiment, the duct 11 is provided inside the side door 1. The duct 11 is inclined and set so as to be positioned upward as a whole toward the rear, and is directed toward the rear portion of the side window 2 on the vehicle interior side as a rear end air discharge port 11a. .. Further, the front end of the duct 11 is opened forward in the lower front portion of the side door 1 as a traveling wind intake port 11b.

In the case of FIG. 6, the traveling wind is supplied toward the rear portion of the side window 2 and disturbs the air flow in the rear portion, so that the slob noise is prevented. An open / close valve may be provided in the duct 11 to stop the air supply from the duct 11 when the slob noise is not generated. Further, a vortex generating means 12 such as a spiral plate or a turbulence generating plate having the same shape as shown in FIGS. 2 to 4 is provided in the duct 11 so that turbulent air is supplied from the duct 11 in advance. You can also leave it.

FIG. 7 shows still another embodiment of the present invention, in which a duct 21 corresponding to the duct 11 is formed by branching from an air conditioning duct 22 so that forced ventilation by an air conditioning fan 23 is provided. , The rear portion of the side window 2 (the rear portion of the duct 21 is directed toward the rear portion of the side window 2 as shown in FIG. 6). In the present embodiment, a damper 24 for switching between the air conditioning duct 22 and the rear duct 21 of the side window 2 is provided, and when the slob noise is generated, the fan 23 Are forcedly driven to switch the damper 24 so that the air blown from the fan 23 flows toward the duct 21. When it is necessary to drive the fan 23 for air conditioning, the switching position of the damper 24 may be set as an intermediate position so that both ducts 21 and 22 can be blown with air.

Although the embodiment has been described above, in order to reduce the degree to which the vehicle compartment functions as a resonance chamber, a separate duct that connects the vehicle compartment and the atmosphere is provided, while an on-off valve that normally closes this duct is provided. The on-off valve may be opened when the slob sound is generated.

Further, in recent automobiles, it is often a power window in which left and right side window glasses are opened and closed by a motor. In this case, one side window 2 (side window glass) is a predetermined window. When opening more than the opening, the other side window 2 (side window glass) is forcibly opened by a predetermined amount, that is, the other side window is opened regardless of the operation of the manually operated power window operation switch. You can also do so.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example in which a turbulence generation plate is provided on a side surface of a side door.

FIG. 2 is a view of the turbulence generation plate shown in FIG. 1 viewed from above.

FIG. 3 is a side view of the turbulence generation plate shown in FIG. 1.

FIG. 4 is a perspective view showing how turbulence of air is generated by the turbulence generation plate shown in FIG. 1.

FIG. 5 is a partial cross-sectional plan view showing an example in which the turbulence generation plate shown in FIG. 1 is movable.

FIG. 6 is a perspective view showing an example of a case where air turbulence is generated at a rear portion of a side window by using a duct for taking in traveling wind.

FIG. 7 is a main-part path diagram showing an example of a case where air turbulence is generated in the rear part of the side window by using a ventilation fan for air conditioning.

[Explanation of symbols]

 1: Side door 2: Side window 3: Disturbance generation plate 11: Duct 11a: Air exhaust port 11b: Air intake port 21: Duct (for rear side window) 22: Duct (for air conditioning) 23: Blower fan (for air conditioning)

Claims (6)

[Scope of utility model registration request] 1. A slobbing noise preventing apparatus for an automobile, comprising turbulence generating means for generating turbulence of air with respect to a rear portion of a side window. 2. The turbulence generating means is provided on a side portion of a vehicle body and is constituted by a turbulence generating plate having a shape which is gradually widened toward the rear. 3. The turbulence generating means is formed by a duct having a rear end portion directed toward a rear portion of the side window and a front end portion serving as an intake port for traveling wind. 4. The turbulence generating means includes a duct having a rear end portion directed toward the rear portion of the side window and a front end portion serving as an air intake port, and directing air through the duct toward the rear end portion of the duct. It consists of a fan that blows air through the air. 5. The turbulence generating unit according to claim 3 or 4, further comprising a vortex generating unit disposed in the duct to vortex the air flowing in the duct. 6. A communication means for communicating the inside of the vehicle with the atmosphere in a portion other than the opened side window when one of the left and right side windows is opened by a predetermined opening or more. The anti-sloving device for automobiles, characterized by: