JP2006327548A - Wheel part blowing out suppression device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheel part blowing out suppression device for a vehicle capable of enhancing aerodynamic performance at high speed traveling by a simple and inexpensive constitution. <P>SOLUTION: A tube 12 making a vehicle forward/rearward direction as a longitudinal direction is arranged at a central part side below a vehicle body. Further, a shutter is radially movably arranged at a periphery of a wheel along a wheel house 16. An air cylinder 20 for opening/closing the shutter 18 is connected to the tube 12 through a connection member 22 and a hose 36. Accordingly, the shutter 18 is retained at a release position by urging force at stopping of the vehicle. At the high speed traveling, a dynamic pressure P is generated on the tube 12 and is transmitted to the air cylinder and the shutter 18 is closed to suppress blowing out of an air stream from the wheel house 16 side. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle wheel part blowing suppression device for suppressing blowing from a wheel part such as a wheel house or a wheel during high-speed traveling.

In the following Patent Document 1, a wheel arch fairing that is movable in the vertical direction of the vehicle is provided in the fender, and the wheel arch fairing is in a retracted state during low-speed traveling, and the wheel arch fairing is in use during high-speed traveling. Thus, a technique for reducing air resistance during high-speed traveling while ensuring traveling performance such as off-road is disclosed.
JP-A-8-318876

  However, according to the above prior art, the vehicle speed and steering angle are detected by sensors, and the controller controls the driving of the motor based on the detection signal, so that the apparatus becomes complicated and the cost increases. There was a problem.

  In view of the above facts, the present invention has an object to obtain a vehicle wheel part blowout suppression device that can improve aerodynamic performance during high-speed traveling with a simple and low-cost configuration.

  The wheel part blowing suppression device for a vehicle according to the first aspect of the present invention is provided along the wheel house, and suppresses the blowing of traveling wind from the wheel house and an open position that allows the blowing of traveling wind from the wheel house. And a shutter driving means for closing the shutter by using the dynamic pressure of the airflow passing below the vehicle body when the vehicle is traveling at a high speed. It is characterized by.

  According to a second aspect of the present invention, there is provided a vehicle wheel portion blowing suppression device according to the present invention, wherein the vehicle wheel portion blowing suppression device is provided at an opening portion of the wheel and permits an opening of the running wind from the wheel opening portion and of the running wind from the wheel opening portion. A shutter that is movable between a closing position that suppresses the blowout, and a shutter driving means that closes the shutter by using the dynamic pressure of the airflow that passes under the vehicle body at least during high-speed traveling; It is characterized by having.

  According to a third aspect of the present invention, there is provided a vehicle wheel portion blowing suppression device according to the present invention, which is provided along the wheel house, and that suppresses blowing of traveling wind from the wheel house and an open position that allows the blowing of traveling wind from the wheel house. A first shutter that is movable between a closed position and a wheel opening, and an opening position that is provided at the wheel opening and allows the blowing of traveling wind from the wheel opening, and the blowing of traveling wind from the wheel opening. A second shutter provided so as to be movable between the closed position to be suppressed, and the first shutter and the first shutter by utilizing the dynamic pressure of the air flow passing below the vehicle body at least when the vehicle is traveling at a high speed. And shutter driving means for closing the two shutters.

  According to a fourth aspect of the present invention, there is provided the vehicle wheel portion blowing suppression device according to any one of the first to third aspects, wherein the shutter driving means is connected to a shutter and opens the shutter. Driving means for moving between a position and a closed position; and a dynamic pressure transmitting means provided on the lower side of the vehicle body and communicated with the driving means to transmit the dynamic pressure generated below the vehicle body during traveling to the driving means. It is characterized by comprising.

  According to the first aspect of the present invention, the shutter is provided along the wheel house, and the dynamic pressure of the airflow passing through the lower part of the vehicle body is utilized when the shutter is driven at least at high speed by the shutter driving means. Thus, for example, the following aerodynamic performance can be realized.

  As an example, the shutter is held in the open position when the vehicle is stopped, and the shutter is held in the closed position using dynamic pressure generated below the vehicle body when traveling at high speed. By doing so, it is possible to suppress or inhibit the air flow separated by the front bumper from blowing out from the wheel house, so that the air flow separated by the front bumper is at a high speed (flow velocity) along the side surface of the vehicle body. It flows to the rear side of the vehicle. For this reason, when the vehicle is viewed from the rear, the difference in the air flow velocity is reduced between the side surfaces (the left and right sides of the vehicle body) and the upper and lower surfaces (the upper surface of the luggage door and the lower surface of the vehicle body floor). It is possible to suppress the occurrence of shearing force between the air flow on both sides and the upper and lower air flows. If the generation of the shearing force between the airflows can be suppressed, the generation of eddy currents can be suppressed, so that the pressure loss acting on the rear part of the vehicle body can be reduced. Thereby, the force pulling the rear part of the vehicle body toward the vehicle rear side on the vehicle rear side is reduced, and the drag resistance value can be improved.

  Moreover, according to the present invention, since the shutter is closed by utilizing the dynamic pressure of the airflow passing through the lower part of the vehicle body at least when traveling at high speed, a complicated structure using a motor or the like is not required and the structure is low-cost. Can be established.

  According to the second aspect of the present invention, the shutter is provided along the opening of the wheel, and the dynamic pressure of the air flow passing through the lower part of the vehicle body when the shutter is driven at least at high speed by the shutter driving means. For example, the following aerodynamic performance can be realized.

  As an example, the shutter is held in the open position when the vehicle is stopped, and the shutter is held in the closed position using dynamic pressure generated below the vehicle body when traveling at high speed. By doing so, the air flow separated by the front bumper can be suppressed or suppressed from blowing out from the opening of the wheel. Therefore, the air flow separated by the front bumper has a high velocity (flow velocity) along the side of the vehicle body. ) To the rear of the vehicle. For this reason, when the vehicle is viewed from the rear, the difference in the air flow velocity is reduced between the side surfaces (the left and right sides of the vehicle body) and the upper and lower surfaces (the upper surface of the luggage door and the lower surface of the vehicle body floor). It is possible to suppress the occurrence of shearing force between the air flow on both sides and the upper and lower air flows. If the generation of the shearing force between the airflows can be suppressed, the generation of eddy currents can be suppressed, so that the pressure loss acting on the rear part of the vehicle body can be reduced. Thereby, the force pulling the rear part of the vehicle body toward the vehicle rear side on the vehicle rear side is reduced, and the drag resistance value can be improved.

  Moreover, according to the present invention, since the shutter is closed by utilizing the dynamic pressure of the airflow passing through the lower part of the vehicle body at least when traveling at high speed, a complicated structure using a motor or the like is not required and the structure is low-cost. Can be established.

  According to the third aspect of the present invention, the shutter according to the first aspect is provided as the first shutter, and the shutter according to the second aspect is provided as the second shutter, and the shutter is driven. Since the first shutter and the second shutter are closed using the dynamic pressure of the airflow passing through the lower part of the vehicle body at least when the vehicle is traveling at a high speed, the first shutter and the second shutter are closed. Both the action and the action of the invention described in claim 2 can be obtained. That is, it is possible to suppress or suppress both the blowout from the wheel house and the blowout from the opening of the wheel during high speed traveling.

  According to the fourth aspect of the present invention, the dynamic pressure generated below the vehicle body during traveling is transmitted to the drive means by the dynamic pressure transmission means provided on the vehicle body lower side. The drive means moves the shutter between the open position and the closed position using the transmitted dynamic pressure.

  As described above, in the present invention, the shutter driving means is configured to include the driving means for opening and closing the shutter and the dynamic pressure transmitting means for transmitting the dynamic pressure during traveling, so that the configuration is very simple. Can be.

  As described above, the vehicle wheel portion blowing suppression device according to claim 1 is provided along the wheel house, and the open position allowing the running wind to blow from the wheel house and the blowing of the running wind from the wheel house. And a shutter driving means for closing the shutter using the dynamic pressure of the airflow passing under the vehicle body at least when the vehicle is traveling at a high speed. Therefore, the air flow separated by the front bumper during high-speed driving can flow to the rear side of the vehicle at a high speed along the side of the vehicle body, and as a result, a simple and low-cost configuration regardless of a complicated configuration such as a motor. It has an excellent effect that it can improve the aerodynamic performance at high speed.

  The vehicle wheel portion blowing suppression device according to claim 2 is provided at an opening portion of the wheel and suppresses blowing of running wind from the opening position that allows the blowing of running wind from the wheel opening portion and the opening portion of the wheel. A shutter that is movable between the closed position and a shutter driving means that closes the shutter using the dynamic pressure of the airflow that passes through the lower part of the vehicle body at least during high-speed traveling. The airflow separated by the front bumper during traveling can flow along the side of the vehicle body at a high speed to the rear of the vehicle. As a result, regardless of the complicated configuration of the motor, etc. It has an excellent effect that the aerodynamic performance can be improved.

  According to a third aspect of the present invention, there is provided a vehicle wheel portion blowing suppression device according to the present invention, which is provided along the wheel house, and that suppresses blowing of traveling wind from the wheel house and an open position that allows the blowing of traveling wind from the wheel house. A first shutter that is movable between a closed position and a wheel opening, and an opening position that is provided at the wheel opening and allows the blowing of traveling wind from the wheel opening, and the blowing of traveling wind from the wheel opening. A second shutter provided so as to be movable between a closed position to be suppressed, and a first shutter and a second shutter using a dynamic pressure of an air flow passing below the vehicle body at least when traveling at high speed And a shutter driving means for closing the shutter, so that both blowing out from the wheel house and blowing out from the opening of the wheel during high speed traveling are suppressed or suppressed Rukoto can, as a result, has an excellent effect that it is possible to further improve the aerodynamic performance at high speeds.

  According to a fourth aspect of the present invention, there is provided the vehicle wheel portion blowout suppressing device according to any one of the first to third aspects, wherein the shutter driving means is connected to the shutter and opens the shutter. Driving means for moving between the driving position and the closed position; and a dynamic pressure transmission means provided on the lower side of the vehicle body and communicated with the driving means to transmit the dynamic pressure generated below the vehicle body during traveling to the driving means. Since it is comprised, it can be set as a very simple structure, As a result, various effects, such as the increase suppression of a vehicle weight and a fuel-consumption improvement, are acquired.

  Hereinafter, an embodiment of a vehicle wheel portion blowing suppression device according to the present invention will be described with reference to FIGS. In these drawings, an arrow FR appropriately shown indicates the vehicle front side, an arrow UP indicates the vehicle upper side, and an arrow IN indicates the vehicle width direction inner side.

  1 and 2 are schematic views of the overall configuration of the vehicle wheel house blowing suppression device 10 (FIG. 1 is when the vehicle is stopped, and FIG. 2 is when the vehicle is traveling at high speed). Further, FIG. 3 shows a side view in which a main part of the vehicle wheel house blowing suppression device 10 is partially extracted and enlarged. Further, FIGS. 4A, 4B, and 4C are respectively a front view that represents an air flow during high-speed traveling with arrows, a perspective view that is viewed obliquely from above, and a rear view. .

  As shown in these drawings, the vehicle wheel house blowing suppression device 10 includes, as a system, a tube 12 disposed along the vehicle front-rear direction below the vehicle body, outer peripheral surfaces of the front wheels 14A and the rear wheels 14B, and wheels. A plurality of shutters 18 that can be opened and closed in a gap 24 between the house 16, an air cylinder 20 that is provided corresponding to each shutter 18 and holds the shutter 18 movably in the radial direction, and the air A connecting member 22 such as a hose that connects the cylinder 20 and the tube 12 is configured as a main part.

  Of the above construction, the air cylinder 20, the piston 28, the piston rod 30 and the compression coil spring 34 correspond to the drive means described in claim 4, and the tube 12, the connecting member 22 and the hose 36 described later are described in claim 4. It corresponds to the dynamic pressure transmission means.

  Hereinafter, each component will be described.

  The tube 12 is configured by, for example, a metal circular tube or the like, and the inside is hollow. By arranging the tube 12 between the left and right front wheels 14A with the longitudinal direction of the vehicle as the longitudinal direction, a part f of the air flow F generated according to the speed during traveling is generated in the tube 12 as shown in FIG. Passing through, dynamic pressure is applied. The tube 12 may be a square tube or the like other than the circular tube.

  The shutters 18 are arranged in a circular arc shape over the entire circumference of the wheel house 16 in a side view. The position of the shutter 18 illustrated in FIG. 1 is the “open position”, and at this time, the gap 24 between the wheel house 16 and the front wheel 14A and the rear wheel 14B is open. Further, the position of the shutter 18 illustrated in FIG. 2 is a “closed position”, and at this time, the gap 24 between the wheel house 16 and the front wheel 14A and the rear wheel 14B is closed.

  As shown in an enlarged view in FIGS. 3A and 3B, each shutter 18 has a curved shape in an arc shape in a side view. The cross-sectional shape of the shutter 18 is formed in an L shape as an example. In this case, the side portion 18A functions as a closing portion that closes the gap 24, and the outer peripheral portion 18B of the side portion 18A is an attachment portion with the air cylinder 20. Function as.

  Each shutter 18 is provided with an air cylinder 20 so that the axial direction coincides with the radial direction. The air cylinder 20 is hollow inside and includes a large diameter portion 20A and a small diameter portion 20B. A piston 28 is disposed inside the large-diameter portion 20A, whereby the internal space of the large-diameter portion 20A of the air cylinder 20 is divided into two chambers. A piston rod 30 is erected on the shaft core portion of the piston 28, and a distal end portion of the piston rod 30 passes through the bottom wall portion 26 of the air cylinder 20 and is connected to an outer peripheral portion 18B of the shutter 18 (not shown). It is fixed by. In addition, a communication hole 26 for air circulation having a diameter larger than that of the piston rod 30 is formed in the shaft core portion of the bottom wall portion 26, so that the piston rod 30 can be moved in the axial direction during a dynamic pressure action. .

  Further, a compression coil spring (which is grasped as an urging means including another spring such as a tension coil spring in a broad sense) is provided at a portion of the piston rod 30 between the bottom wall portion 26 of the air cylinder 20 and the piston 28. 34 is wound. One end of the compression coil spring 34 is abutted and locked to the bottom wall portion 26 of the air cylinder 20, and the other end is abutted and locked to the end surface of the piston 28. Accordingly, the compression coil spring 34 always presses and urges the piston 28 in the direction separating from the bottom wall portion 26 (the direction opposite to the arrow P direction in FIG. 3B). As a result, the shutter 18 is stopped. When a dynamic pressure such as this is not acting, it is held in the closed position.

  The small diameter portions 20 </ b> B of the plurality of air cylinders 20 are connected to each other by a pipe-like connecting member 22 formed in a semicircular shape along the wheel house 16. The connecting member 22 and the rear end 12A of the tube 12 are communicated with each other by a hose 36. When the connecting member 22 is not provided, the rear end portion of the hose 36 may be branched according to the number of the air cylinders 20 and connected to the small diameter portions 20B of the air cylinders 20.

(Action / Effect)
Next, the operation and effect of this embodiment will be described.

  The state shown in FIG. 1 is a state when the vehicle wheel house blowing suppression device 10 is stopped. In this state, no airflow flows through the tube 12, so no dynamic pressure is generated in the tube 12, and therefore no dynamic pressure is transmitted into the air cylinder 20. Therefore, the piston 28 is maximally stroked toward the small diameter portion 20B by the urging force of the compression coil spring 34, and the shutter 18 is held in the open position.

  On the other hand, when the vehicle is traveling from this state, particularly when traveling at high speed, as shown in FIG. 2, an air flow F enters between the left and right front wheels 14 </ b> A, and a part f thereof flows into the tube 12. For this reason, dynamic pressure is generated in the tube 12, and this dynamic pressure becomes P and is transmitted into the air cylinder 20. For this reason, the piston 28 in the air cylinder 20 is pressed in the direction of action of the dynamic pressure P (inward in the radial direction of the wheel house 16), and axially moves in the direction of action of the dynamic pressure P against the urging force of the compression coil spring 34. Moving. At this time, the air in the room between the piston 28 and the bottom wall portion 26 of the air cylinder 20 is discharged from the communication hole 32 to the outside of the air cylinder 20. When the piston rod 30 makes a full stroke, the shutter 18 reaches the closed position, and the state shown in FIG. 2 is obtained.

  When the shutter 18 is closed, the gap 24 between the wheel house 16 and the front wheel 14A and the rear wheel 14B is closed. For this reason, blowing out from the gap 24 of the wheel house 16 is suppressed or suppressed, and the air flow Q1 (see FIG. 4A) separated by the front bumper 38 is a vehicle at a high speed (flow velocity) along the vehicle body side surface 40. It flows to the rear side (the flow of the airflow at this time is indicated by an arrow Q2 in FIG. 4B). For this reason, when the vehicle is viewed from the rear, the difference in the air flow velocity is reduced between the both sides and the top and bottom surfaces of the vehicle, and a shearing force is generated between the airflow on both sides and the airflow on the top and bottom on the vehicle rear side. Can be suppressed. If the generation of the shearing force between the airflows can be suppressed, the generation of eddy currents can be suppressed, so that the pressure loss acting on the vehicle body rear portion 42 can be reduced. Incidentally, the hatched portion R shown in FIG. 4C is a region where the pressure loss is high, and it can be seen that in this embodiment, the pressure loss of the portions S on both sides is reduced. Thereby, the force pulling the vehicle body rear portion 42 toward the vehicle rear side on the vehicle rear side is reduced, and the drag resistance value (Cd) can be improved.

  For comparison, FIG. 5 schematically shows the aerodynamic performance of a vehicle that does not include the vehicle wheel house blowing suppression device 10 according to the present embodiment. As shown in FIG. 5A, the airflow Y1 separated by the front bumper 38 flows to the rear side of the vehicle. At this time, air flows outward from the gap 24 between the wheel house 16 and the front wheel 14A in the vehicle width direction. Since there is a blowout of the flow Y2, the air flow Y1 separated by the front bumper 38 is further pushed out in the separation direction and flows to the rear side of the vehicle as an air flow Y3 (that is, separation of the air flow is promoted). ) In this case, since the speed (flow velocity) of the air flow Y3 is slow, the difference in air flow velocity between the both side surfaces and the top and bottom surfaces of the vehicle when the vehicle is viewed from the rear is large, A shear force is likely to be generated between the air flow and the upper and lower air flows. When a shearing force is generated between the airflows, a vortex flow is generated, so that a pressure loss acting on the rear part 42 of the vehicle body increases. As a result, the force pulling the vehicle body rear portion 42 toward the vehicle rear side on the vehicle rear side becomes larger than that in the present embodiment, and the drag resistance value (Cd) tends to deteriorate. Incidentally, the hatched portion R ′ shown in FIG. 5C is a region where the pressure loss is high, and in this embodiment, the entire range including S (double hatched portion) in which the pressure loss is improved. I understand that

  Moreover, according to the present embodiment, the shutter 18 is opened and closed by using the dynamic pressure P generated by the air flow F passing under the vehicle body during traveling, so that a complicated structure using a motor or the like is not required. The configuration can be established at a cost.

  As described above, according to the vehicle wheel house blowing suppression device 10 according to the present embodiment, it is possible to improve aerodynamic performance during high-speed traveling with a simple and low-cost configuration regardless of a complicated configuration such as a motor.

  Further, in the vehicle wheel house blowing suppression device 10 according to the present embodiment, the shutter driving means for opening and closing the shutter 18 includes the tube 12, the hose 36, the connecting member 22, and the air cylinder disposed on the vehicle body lower side. 20, a piston 28, a piston rod 30, and a compression coil spring 34. The shutter 18 can be opened and closed using the dynamic pressure generated in the tube 12 as it is. As a result, the configuration becomes very simple, and various effects such as suppression of increase in vehicle weight and improvement in fuel consumption can be obtained.

  In addition, the improvement effect of a fuel consumption performance is brought about also by the improvement of the aerodynamic performance which makes the core of the effect at the time of using the wheel house blowing suppression apparatus 10 for vehicles which concerns on this embodiment.

(Other embodiments)
In the embodiment shown in FIG. 6, in addition to the vehicle wheel house blowing suppression device 10 provided with the shutter 18 on the wheel house 16 side, a vehicle that allows the opening portion 54 of the wheel 52 to be opened and closed by another shutter 56. This is characterized in that a wheel opening blowout suppression device 58 is provided. Each shutter 56 is formed in a substantially fan shape, and is arranged radially from the center of the wheel 52.

  Note that the opening / closing operation and the driving mechanism of the shutter 56 are the same as those of the shutter 18 on the wheel house 16 side, and the description thereof is omitted. In the above configuration, the shutter 18 corresponds to the first shutter, and the shutter 56 corresponds to the second shutter.

  According to the above configuration, since no dynamic pressure is generated in the tube 12 when the vehicle stops, both the shutters 18 and 56 are held in the open position by the urging force of the compression coil spring 34.

  On the other hand, during high speed traveling, the dynamic pressure generated in the tube 12 is transmitted to each air cylinder 20 via the hose 36, so that both shutters 18 and 56 are simultaneously moved to the closed position. As a result, the gap 24 between the wheel house 16 and the front wheels 14A and the rear wheels 14B is closed, and the openings 54 of the wheels 52 are also closed. Accordingly, it is possible to suppress or suppress both the blowout from the gap 24 of the wheel house 16 and the blowout from the opening 54 of the wheel 52 during high-speed traveling. As a result, the aerodynamic performance during high speed traveling can be further improved.

[Supplementary explanation of this embodiment]
In the other embodiments, both the shutter 18 on the wheel house 16 side and the shutter 56 of the opening 54 of the wheel 52 are applied. However, the present invention is not limited to this, and the shutter 56 is provided only on the opening 54 of the wheel 52. A configuration may be adopted. Even in such a case, an aerodynamic performance improvement effect can be obtained.

  In each of the above-described embodiments, the tube 12 is installed for sensing the dynamic pressure. However, the present invention is not limited to this, and any fluid switching mechanism that can sense a change in the dynamic pressure from the air flow can be applied. . Therefore, for example, instead of the air cylinder 20, an actuator or the like that opens and closes a valve by detecting a change in dynamic pressure may be used.

  Furthermore, in each embodiment mentioned above, although the shutter 18 was arrange | positioned in the substantially whole periphery of the wheel house 16, not only this but the structure provided only in one part may be taken. Even in such a case, an improvement in aerodynamic performance according to the area blocked by the shutter can be obtained. This applies to the shutter 56 as well.

It is a schematic block diagram which shows the whole structure of the wheel house blowing suppression apparatus for vehicles which concerns on this embodiment in the state at the time of a stop. It is a schematic block diagram which shows the whole structure of the vehicle wheel house blowing suppression apparatus which concerns on this embodiment in the state at the time of high speed driving | running | working. (A) is the side view which extracted and expanded a part of main part of the vehicle wheel house blowing suppression apparatus at the time of a stop, (B) (A) is the principal part of the wheel house blowing suppression apparatus for vehicles at the time of high speed driving. It is the side view which extracted and expanded a part. (A) is the front view which represented the flow of the airflow at the time of high speed driving | running | working at the time of high speed driving | running | working at the time of using the vehicle wheel house blowing suppression apparatus which concerns on this embodiment, (B) is the perspective view seen from diagonally upward. C) is a rear view. (A) is a front view expressing the flow of air flow during high-speed running when not including the vehicle wheel house blowing suppression device according to the present embodiment with arrows, (B) is a perspective view seen obliquely from above. (C) is a rear view. It is a perspective view which shows schematic structure of another embodiment which combines the wheel house blowing suppression apparatus for vehicles and the wheel opening part blowing suppression apparatus for vehicles.

Explanation of symbols

10. Vehicle wheelhouse blowing suppression device (vehicle wheel blowout suppression device)
12 Tube (Dynamic pressure transmission means)
14A Front wheel 14B Rear wheel 16 Wheel house 18 Shutter (first shutter)
20 Air cylinder (drive means)
22 Connecting member (dynamic pressure transmission means)
24 Clearance 28 Piston (drive means)
30 piston rod (drive means)
34 Compression coil spring (drive means)
36 Hose (dynamic pressure transmission means)
52 Wheel 54 Opening 56 Shutter (second shutter)
58 Vehicle wheel opening blowout suppression device (vehicle wheel blowout suppression device)

Claims (4)

A shutter that is provided along the wheel house and is movable between an open position that allows the running wind from the wheel house to be blown out and a closed position that inhibits the running wind from the wheel house;
Shutter driving means for closing the shutter using the dynamic pressure of the airflow passing under the vehicle body at least when the vehicle is traveling at a high speed;
A vehicle wheel portion blowout suppression device characterized by comprising: A shutter provided at the opening of the wheel and movable between an open position that allows the blowing of running wind from the wheel opening and a closed position that inhibits blowing of running wind from the opening of the wheel;
Shutter driving means for closing the shutter using the dynamic pressure of the airflow passing under the vehicle body at least when the vehicle is traveling at a high speed;
A vehicle wheel portion blowout suppression device characterized by comprising: A first shutter that is provided along the wheel house and is movable between an open position that allows the blowing of running wind from the wheel house and a closed position that inhibits blowing of running wind from the wheel house;
A second shutter provided at the wheel opening and movably provided between an open position that allows the blowing of running wind from the wheel opening and a closed position that inhibits blowing of running wind from the wheel opening. When,
Shutter driving means for closing the first shutter and the second shutter using the dynamic pressure of the airflow passing under the vehicle body at least when the vehicle is traveling at a high speed;
A vehicle wheel portion blowout suppression device characterized by comprising: The shutter driving means includes
Driving means connected to the shutter and moving the shutter between an open position and a closed position;
A dynamic pressure transmitting means which is provided on the lower side of the vehicle body and communicates with the driving means, and transmits the dynamic pressure generated below the vehicle body during traveling to the driving means;
Composed of,
The vehicle wheel ejection suppressing device according to any one of claims 1 to 3, wherein the vehicle wheel ejection suppressing device is characterized.

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