JP2883301B2 - Drive control device for movable spoiler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a drive control device for a movable spoiler, and more particularly to a drive control device for a movable spoiler for a vehicle.

[0002]

2. Description of the Related Art Conventionally, a spoiler (front spoiler) is mounted below a head portion of a vehicle, for example, an automobile. The front spoiler gives the vehicle a downforce and improves the driving stability of the vehicle during high-speed driving.

[0003] Such a spoiler can improve the driving stability of an automobile at high speeds, not at low speeds. For this reason, depending on conditions such as switches and vehicle speed,
There is a movable spoiler that sets the spoiler to a position where the effect is exhibited (deployed position) and a position that does not cause running resistance (storage position) (for example, JP-A-2-319).
No. 84, JP-A-3-224874, JP-A-4-237
No. 685). Such a movable spoiler is provided with a motor for moving a spoiler body (spoiler panel) to a deployed position and a stored position, and the driving of this motor is controlled by a control unit. The control unit controls the motor to move the spoiler to the deployed position when the speed reaches a predetermined speed, and to move the spoiler to the storage position when the speed falls below another predetermined speed. Therefore, the movable spoiler is configured to deploy and retract the spoiler based on the vehicle speed regardless of whether the vehicle is running or starting.

However, in the above-described movable spoiler, it is assumed that the speed based on the rotation speed of the tire and the actual vehicle speed are always equal. If you suddenly start or accelerate suddenly on a slippery road such as a snowy road,
Since the friction between the road surface and the tire is small, the tire on the driving wheel side may idle and the rotation speed of the tire may increase irrespective of the vehicle speed. In this case, since the rotation speed of the tire does not match the actual vehicle speed, the vehicle speed cannot be accurately determined. Therefore, even at low speeds, the spoiler may be moved to the deployed position as determined to be at high speeds. At this time, if the spoiler hits an obstacle such as a curb or snow, there may be a problem that the spoiler is damaged or a link portion of the spoiler is deformed.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above facts, and is directed to a movable spoiler which arranges a spoiler at an appropriate position based on an accurate vehicle speed (moving speed of the vehicle itself). It is an object to provide a drive control device.

[0006]

According to a first aspect of the present invention, there is provided a drive control device for a movable spoiler which detects a vehicle speed of a vehicle based on a rotational speed of a front wheel or a rear wheel, and detects the vehicle speed based on the detected vehicle speed. Movement control means for selectively moving the spoiler to two positions, a storage position or a deployment position, detecting idle rotation of a front wheel or a rear wheel at the time of detecting the vehicle speed, and deploying the spoiler based on a difference in detected speed due to the idle rotation. Deployment movement limiting means for limiting movement to a position.

[0007] According to this, the movement of the spoiler to the deployed position is controlled based on a difference in detected speed due to idle rotation of the wheel when the vehicle speed is detected based on the rotation speed of the front wheel or the rear wheel. That is, when there is no detection speed difference,
While the spoiler is moved to the storage position or the development position according to the vehicle speed based on the rotation speed, if a difference in the detected speed occurs, the movement of the spoiler to the development position is restricted.

Accordingly, the spoiler can be arranged at a position appropriate for the actual vehicle speed. According to a second aspect of the present invention, in the drive control device for a movable spoiler according to the first aspect, the deployment / movement restricting unit sets the vehicle speed to be moved to the deployment position from a predetermined speed equal to or lower than a spoiler deployment speed including a stop state of the vehicle. Prohibition control means that measures the time until the arrival and determines that an abnormality has occurred if the time is shorter than a determination reference time set in advance based on the capability of the vehicle, and prohibits deployment of the spoiler by the movement control means. It is characterized by being.

According to this, in the drive control device for a movable spoiler according to the present invention, the prohibition control means reaches the vehicle speed for moving the vehicle from the stop state to the deployment position in a time shorter than a predetermined judgment reference time. In this case, it is determined that an abnormality has occurred, and the movement by the movement control means is restricted. That is, the detected speed difference due to the idling of the front wheel or the rear wheel is detected from the viewpoint of the reference time. This is because when the friction between the road surface and the wheels is small, the wheels idle at the time of start regardless of the actual vehicle speed, and are earlier than the time required to reach the actual vehicle speed requiring a predetermined time with a predetermined friction. It is based on becoming.
Here, the reference time depends on the performance of the vehicle, and is set based on a condition including at least the type of the vehicle.

Therefore, even when the predetermined vehicle speed is detected by the vehicle detecting means, the spoiler is not moved to the deployed position when the prohibition control means determines that an abnormality has occurred. That is, even if the vehicle speed set to deploy the spoiler is detected differently from the actual state, such as when the wheels are slipping and slipping during snowfall, the spoiler should not be deployed. Can be. As a result,
The spoiler can be arranged at an appropriate position based on the exact vehicle speed.

A drive control device for a movable spoiler according to a third aspect of the present invention is the drive control device according to the first aspect, further comprising acceleration calculation means for calculating an apparent acceleration based on the vehicle speed detected by the vehicle speed detection means. The movement restricting means compares the apparent acceleration with a maximum acceleration set in advance based on the ability of the vehicle, and determines that an abnormality has occurred when the apparent acceleration exceeds the maximum acceleration. And a prohibition control means for prohibiting the movement of the spoiler by the movement control means.

According to this, in the drive control device for the movable spoiler of the present invention, the apparent acceleration is calculated from the detected vehicle speed by the acceleration calculating means, and the preset maximum acceleration is detected by the inhibition control means. If the above acceleration is higher, the movement of the spoiler by the movement control means is restricted. That is, the detected speed difference due to the idling of the front wheel or the rear wheel is detected from the viewpoint of the difference in acceleration. This is based on the fact that when the acceleration is detected beyond the maximum acceleration, a slip or the like occurs when the acceleration is started, and the wheel is often idling. Here, the maximum acceleration differs depending on the ability of the vehicle and is set based on a condition including at least the type of the vehicle.

Therefore, even if a predetermined vehicle speed is detected, if the prohibition control means determines that an abnormality has occurred, the spoiler can be prevented from being deployed.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

[First Embodiment] FIG. 1 is a schematic perspective view of a front spoiler (hereinafter, simply referred to as a “spoiler”) 10 according to the present embodiment, which is attached to a vehicle. 2) shows a back surface of the spoiler 10, and FIG. 2B shows an enlarged view of a connecting portion of the link mechanism.

A motor 12 as a driving means is provided on the upper side of one end in the width direction of the spoiler 10. A gear box 14 is provided at the lower end of the motor 12, that is, on the side where the output shaft protrudes, and is connected to the output shaft.
Further, the motor 12 is connected to a control unit 36 (see FIG. 4), and the motor 12 is driven according to a signal from the control unit 36. The gear box 14 accommodates a worm speed reduction mechanism that outputs the rotation of the motor 12 by reducing the speed with a worm and a worm wheel. The gear box 14 is attached to a substantially U-shaped bracket 16. A pair of side plates 16A (only one is shown in FIG. 1) of the bracket 16 is provided with a shaft through-hole,
Drive transmission shaft 26 which is the output shaft of gearbox 14
Is penetrating.

A tongue piece 16B is integrally formed below the side plate 16A, and a shaft 18 is bridged via a bearing 17. The shaft 18 is supported by a cylindrical portion 19A of a vehicle mounting bracket 19. The flange portion 19B of the vehicle mounting bracket 19 is fixed to a predetermined position of the vehicle, whereby the shaft 18 is supported by the vehicle via the vehicle mounting bracket 19. Shaft 1
Both ends of 8 are respectively supported by panel brackets 22 provided on the back surface of the spoiler panel 20. That is, the shaft 18 has a role as a rotation center axis of the spoiler panel 20.

At the end of the drive transmission shaft 26 penetrating the side plate 16A of the bracket 16, a crank arm 30 is provided.
Has been fixed. Thereby, the crank arm 30
When the drive transmission shaft 26 rotates about the axis of the drive transmission shaft 26, the drive transmission shaft 26 rotates accordingly.

At the other end of the crank arm 30, FIG.
As shown in (B), a ball shaft 28 is provided which projects in a direction opposite to the bracket 16 side in parallel with the projecting direction of the drive transmission shaft 26, and the ball shaft 28 has ball bearings 29 at both ends. Is rotatably supported by one of the link arms 32 having the crank arm 3.
0 and the link arm 32 are connected.

On the other hand, in the ball bearing 29 at the other end of the link arm 32, one end is fixed to a part of the panel bracket 22, and the ball shaft 28 of the interlocking shaft 34 having the ball shaft 28 at the other end is fitted. I have. As described above, since the link arm 32 has one end connected to the crank arm 30 and the other end connected to the panel bracket 22 via the interlocking shaft 34, the panel bracket 22 moves in conjunction with the movement of the link arm 32. It is supposed to.

Referring now to FIG. 3, the motor 12 is turned on by the arrow Q in FIG.
When rotated in the clockwise direction represented by, the spoiler panel 20 is moved through the panel bracket 22 within a range of a predetermined angle (approximately 90 °) in the direction of arrow S in FIG. ).

The deployed position and the stored position of the spoiler panel 20 are determined according to a signal from the cam switch 24.

As shown in FIG. 2, the cam switch 24
A cam plate 44 fixed to the side surface of the worm wheel in the gear box 14;
4 and a plurality of fixed contacts for slidingly detecting the respective positions. Further, the cam plate 44 is configured to rotate integrally with the drive transmission shaft 26 (FIG. 5).
Arrow P direction).

As shown in FIG.
Consists of three conductive lanes that are conductive to each other. The two conductive lanes outside and in the center of the conductive lane are respectively non-conductive to a position indicating that the spoiler panel 20 is in the storage position and a position indicating that the spoiler panel 20 is in the deployed position. The parts 46 and 48 are provided in a 180 ° positional relationship about the drive transmission shaft 26. In each lane, a common contact G, a storage contact A, and a development contact B are held in contact with each other in order from the inside. The common contact G is grounded, and a power supply voltage V is supplied to the storage contact A and the development contact B via a resistor R. Therefore, when the storage contact A and the common contact G or the deployment contact B and the common contact G are in a conductive state by the lane, no current flows to the control unit 36,
The L signal will be supplied. Here, when the non-conductive portion 46 or the non-conductive portion 48 corresponds to the storage contact A or the deployment contact B, a current flows to the control portion 36 and an H signal is supplied. The control unit 36 can recognize the developed position or the stored position by supplying the H signal. Hereinafter, a signal for detecting the storage position is called a cam 1 and a signal for detecting the developed position is called a cam 2.

As shown in FIG. 4, the control unit 36 is connected to the motor 12 via a relay switch 50. The relay switch 50 controls the drive or stop of the motor 12 by energizing or de-energizing the coil unit 50A of the relay switch, switching the contact point of the switch unit 50B.

A spoiler switch 38 and a vehicle speed sensor 40 are connected to the control unit 36. The spoiler switch 38 is a switch for permitting the driving of the spoiler 10, and is attached to an instrument panel in a driver's seat. The vehicle speed sensor 40 outputs a pulse signal to the control unit 36 according to the rotation speed of the front wheel or the rear wheel.

As shown in FIG. 6, the control unit 36 includes a vehicle speed calculation unit 52, a time measurement unit 54, a determination unit 56, and an instruction unit 58.

The vehicle speed calculating section 52 is connected to the vehicle speed sensor 40 and the spoiler switch 38,
In the ON state, the vehicle speed corresponding to the rotation speed is calculated from the rotation speed of the wheel based on the pulse signal output from the vehicle speed sensor 40.

The time measuring section 54 is connected to the vehicle speed calculating section 52, and is set in advance at the time when the vehicle speed detected by the vehicle speed calculating section 52 shifts from the stop state (0 km / h) to the running state. The time required to reach the deployment instruction speed is measured.

The determination unit 56 is connected to the time measurement unit 54, and compares the time required to reach the deployment instruction speed measured by the time measurement unit 54 with a predetermined reference time. Has become. The judgment reference time is
It is mainly set according to the vehicle type. This is the time required to reach the deployment instruction speed from the stop state, and is set as the time required to reach the deployment instruction speed in the shortest time in a normal state. That is, when the time is shorter than the reference time, the measurement is not performed in the normal state. For this reason, as a result of comparing the measured time until the deployment instruction speed reaches the deployment instruction speed with the determination reference time, if the measured time is shorter than the determination reference time, the friction is small and the wheels idle and slip and the like occur. In most cases, it is determined that an abnormality has occurred. On the other hand, if the measured time is longer than the reference time, it is determined to be normal.

The instruction unit 58 is connected to the judgment unit 56, and based on the judgment by the judgment unit 56, arranges the spoiler panel 20 at the developed position or the storage position, or does not move the spoiler panel 20 to the developed position. Are given instructions. In the present embodiment, when the determination unit 56 determines that the vehicle is normal under the ON (drive permission) state of the spoiler switch 38, the spoiler panel 2 is turned on when the vehicle speed calculated by the vehicle speed calculation unit 52 is 70 km / h or more.
Expand the spoiler panel 20 at 50 km / h or less.
Is stored. On the other hand, when the vehicle starts, even if a vehicle speed of 70 km / h or more is detected by calculation, if the determination unit 56 determines that an abnormality has occurred, the instruction unit 58 does not give a deployment instruction. Has become. Further, the cam 1 and the cam 2 of the above-described cam plate 44 which rotate together with the driving of the motor 12 are connected to the instructing section so that signals of the cam 1 and the cam 2 are inputted.

Therefore, when starting and running, the control unit 36
The vehicle speed calculation unit 52 calculates the vehicle speed and the time measurement unit 54 measures the time until the vehicle speed instructs movement to the deployed position, and the determination unit 56 compares the determination reference time with the measurement time. . At this time, if the measured time is longer than the determination reference time, the determination unit 56 determines that the spoiler panel 20 is normal by driving the motor 12 based on the vehicle speed obtained by the calculation. Instruct. When the motor 12 is driven based on the instruction of the instruction unit 58 and the spoiler panel 20 moves, signals of the cam 1 and the cam 2 are input to the instruction unit 58,
The instruction unit 58 instructs to stop the movement based on these cam signals. When the driving of the motor 12 is stopped by an instruction from the instruction unit 58, the movement and arrangement of the spoiler panel 20 are performed.

On the other hand, if the measured time is shorter than the reference time at the time of starting, the determination unit 56 determines that an abnormality has occurred, and the instructing unit 58 displays the spoiler panel 2.
0 is not moved to the developed position.

The operation of this embodiment will be described below with reference to FIG. In step 100, the value of the vehicle speed S is reset (0), and the spoiler switch 38 attached to the vehicle is turned on to enable driving. In step 102, based on the rotational speeds of the front wheels and the rear wheels,
The vehicle speed pulse signal is input to the control unit 36.

When the pulse signal of the vehicle speed is input, the vehicle speed S is calculated based on the pulse signal in step 104, and the vehicle speed S calculated in step 106 is 0 km.
/ h is determined. That is, when the vehicle speed S is 0 km / h, the vehicle in the driving permission state is in a stopped state, the determination is affirmed, and the routine proceeds to step 108.

When the determination is affirmed and the routine proceeds to step 108, the arrival time t until the spoiler panel 20 reaches a speed of 70 km / h, which is set in advance as the speed at which the spoiler panel 20 starts to move to the deployed position, is reset (0), and , The abnormality occurrence flag F indicating that an abnormality has occurred is reset (0).
And the routine ends.

On the other hand, if the vehicle speed S is not 0 km / h in step 106, that is, if the vehicle starts running, the determination is negative and the routine goes to step 110, where the arrival time t is incremented and the arrival time t is incremented. Start measuring time.

When the arrival time t is incremented, it is determined in step 112 whether the vehicle speed S has exceeded 70 km / h.

If the speed exceeds 70 km / h, the determination is affirmative and the routine proceeds to step 114, where it is determined whether or not the determination reference time KT is equal to or less than the arrival time t. Judgment reference time K
T is the shortest time required to reach from the stop state to 70 km / h at which the spoiler 10 is deployed, and differs depending on the type of vehicle. Therefore, the determination reference time KT is set to, for example, 5 seconds in advance. Whether or not the determination reference time KT has been exceeded indicates whether or not 70 km / h has been detected by the vehicle speed pulse signal earlier than the shortest time.

If the arrival time t does not exceed the determination reference time KT, the determination is negative, and the routine proceeds to step 116, where an abnormality occurrence flag F indicating the occurrence of an abnormality is set (1). The case where the arrival time t does not exceed the reference time KT means that 70 km / h is earlier than the reference time KT.
Indicates that the vehicle speed S is detected by the pulse signal. Therefore, when the vehicle starts running, the wheels spin, and it is determined that an abnormality has occurred, and the routine proceeds to step 122.

On the other hand, if the arrival time t exceeds the judgment reference time KT, the judgment is affirmative and the routine proceeds to step 118. In step 118, it is determined whether or not the abnormality occurrence flag F is set (1).

If the idling state of the wheels has not been released even after the determination reference time KT has elapsed, the determination is affirmative because the abnormality occurrence flag F is set (1), and the routine proceeds to step 122. . That is, the spoiler panel 20 does not expand.

On the other hand, when the abnormality occurrence flag F is not set, the determination is negative and the routine proceeds to step 120. In step 120, since it is determined that the spoiler panel 20 is in a normal state, an instruction is given to expand the spoiler panel 20, and the process proceeds to step 122.

In step 122, it is determined whether or not the vehicle speed S has fallen below the storage instruction speed of 50 km / h.
0 is stored, and a series of routines ends. At this time, if the camera is already in the storage position, the spoiler panel 20 recognizes this by a combination of cam signals even if an instruction is given, and does not move further.

On the other hand, if the speed is not less than 50 km / h, the determination is negative and the routine ends.

Thus, even if 70 km / h, which is the deployment instruction speed, is detected based on the result of slipping and slipping of the wheels at the time of starting, the idling state is detected and determined based on the determination reference time KT. The panel 20 is not developed. Further, the vehicle speed can be accurately determined at the time of starting, and the spoiler panel 20 can be arranged at an appropriate position.

In the present embodiment, the time from when the vehicle is stopped to when the vehicle reaches the deployment instruction speed of 70 km / h is set as the determination reference time KT. However, the present invention is not limited to this.
For example, the shortest time required to reach 70 km / h from a predetermined speed up to 70 km / h may be used as a reference. According to this, it is possible to detect the idling of the wheel in each speed state and drive the spoiler panel 20 properly.

[Second Embodiment] Next, with reference to FIG. 8, a control section 70 according to a second embodiment of the present invention will be described.

As shown in FIG. 8, the control unit 70 is connected to the motor 12 via the relay switch 50. The relay switch 50 controls the drive or stop of the motor 12 by energizing or de-energizing the coil unit 50B of the relay switch, switching the contact point of the switch unit 50A. When the motor 12 is driven or stopped, the cam switch 24 (see FIG. 4) and the spoiler panel 20 are driven.
(See FIG. 1) are arranged at the development position and the storage position. Further, a spoiler switch 38 and a vehicle speed sensor 40 are connected to the control unit 70. The spoiler switch 38 is a switch for permitting driving of the spoiler 60, and is attached to an instrument panel in a driver's seat. The vehicle speed sensor 40 outputs a pulse signal corresponding to the rotation speed of the front wheel or the rear wheel to the control unit 70.

As shown in FIG. 8, the control unit 70 includes a vehicle speed calculation unit 72, an acceleration calculation unit 74, a determination unit 76, and an instruction unit 78.

The vehicle speed calculator 72 is connected to the vehicle speed sensor 40 and the spoiler switch 38,
The vehicle speed corresponding to the rotation speed is calculated from the rotation speed based on the pulse signal output from the vehicle speed sensor 40 in the ON state of.

The acceleration calculating section 74 is connected to the vehicle speed calculating section 72, and calculates the acceleration a from the rate of change of the vehicle speed detected by the vehicle speed calculating section 72. Therefore, the acceleration a is derived from the rotation speed based on the pulse signal output from the vehicle speed sensor 40. If the rotation speed based on the pulse signal matches the actual vehicle speed, the acceleration a is obtained here. The given acceleration a matches the actual running acceleration of the vehicle.

The judging section 76 is connected to the acceleration calculating section 74, and compares the acceleration a calculated by the acceleration calculating section 74 with a preset maximum acceleration a _max . Since the maximum acceleration a _max is mainly set according to the vehicle type, detecting an acceleration a larger than the maximum acceleration a _max does not occur in a normal state. Therefore, when an acceleration a exceeding the maximum acceleration a _max is detected, slips or the like often occur on the wheels, and it is determined that an abnormality has occurred. On the other hand, when an acceleration a that does not exceed the maximum acceleration a _max is detected, it is determined to be normal.

The instruction unit 58 is connected to the judgment unit 56, and based on the judgment by the judgment unit 56, arranges the spoiler panel 20 at the unfolded position or the storage position, or does not move the spoiler panel 20 to the unfolded position. Thus, each is given an instruction. In the present embodiment, the spoiler switch 3
When the vehicle is accelerated under the ON (drive permission) state of No. 8 and the determination unit 76 determines that the vehicle is normal, the spoiler panel 20 is deployed when the vehicle speed calculated by the vehicle speed calculation unit 72 is 70 km / h or more. , 50 km / h or less, the spoiler panel 20 is stored. On the other hand, if the determination unit 76 determines that an abnormality has occurred during acceleration of the vehicle,
Even when a vehicle speed of 0 km / h or more is detected by calculation, the instruction unit 78 does not give an instruction for deployment. Further, the cam 1 and the cam 2 of the above-described cam plate 44 which rotate together with the driving of the motor 12 are connected to the instructing section so that signals of the cam 1 and the cam 2 are inputted.

Therefore, at the time of start and traveling, the control unit 70
The vehicle speed calculation unit 72 calculates the vehicle speed based on the vehicle speed, and the acceleration calculation unit 74 calculates the acceleration a based on the vehicle speed. The determination unit 76 compares the acceleration a based on the vehicle speed with the maximum acceleration a _max . At this time, the acceleration a based on the vehicle speed is the maximum acceleration a
If it is smaller than _max , the determination unit 76 determines that it is normal, and the instruction unit 78 drives the motor 12 based on the vehicle speed obtained by calculation, and
0 movement is instructed. When the motor 12 is driven based on the instruction of the instruction unit 78 and the spoiler panel 20 moves, signals of the cam 1 and the cam 2 are input to the instruction unit 78 and the instruction unit 7
Reference numeral 8 designates a stop of the movement based on these cam signals. When the driving of the motor 12 is stopped by an instruction from the instruction section 78, the movement and arrangement of the spoiler panel 20 are performed.

On the other hand, if the acceleration a based on the vehicle speed is larger than the maximum acceleration a _max , the judgment section 76 judges that an abnormality has occurred, and the indicating section 78 does not move the spoiler panel 20 to the deployed position. ing.

The operation of the present embodiment will be described below with reference to FIG. In step 200, the vehicle speed S and the acceleration a are reset (0), and the spoiler switch 38 mounted on the vehicle is turned on and the driving is permitted. In step 202, based on the rotational speeds of the front wheels and the rear wheels, The vehicle speed pulse signal is input to the control unit 36.

When the pulse signal of the vehicle speed is input, in step 204, the vehicle speed S is calculated based on the pulse signal, and the acceleration a is calculated based on the vehicle speed S obtained in step 206.

When the acceleration a is calculated, step 208
, The acceleration a and the maximum acceleration a _maxCompare with
Maximum acceleration a_maxIs preset based on the vehicle model
You. Maximum acceleration a_maxIs the largest in the vehicle
It is acceleration, and if the acceleration exceeds this in the normal state,
Absent. Therefore, the acceleration a is the maximum acceleration a_maxDoes not exceed
In this case, the determination is negative and the process proceeds to step 212.

On the other hand, if the acceleration a exceeds the maximum acceleration _amax , it is determined that an abnormality has occurred, and in step 210, the abnormality occurrence flag F is set (1), and the routine proceeds to step 212.

In step 212, it is determined whether or not the vehicle speed S has exceeded a deployment instruction speed of 70 km / h, which is set in advance so as to instruct the movement of the spoiler panel 20 to the deployment position. If the speed exceeds 70 km / h, step 214
Then, it is determined whether or not the abnormality occurrence flag F is set.

If the abnormality occurrence flag F is not set, it is determined that the spoiler panel 20 is normal.
Move to 18.

On the other hand, when the abnormality occurrence flag F is set, the judgment is affirmative, and the process proceeds to step 218 in a state where the movement of the spoiler panel 20 is not instructed.

In step 218, the vehicle speed S is set to a value 5 which is set in advance to move the spoiler panel 20 to the storage position.
It is determined whether the speed is lower than the storage instruction speed of 0 km / h.
If the speed does not fall below 50 km / h, the determination is negative and the routine proceeds to step 222. On the other hand, if the speed is lower than 50 km / h, the determination is affirmative and the routine proceeds to step 220, where an instruction is given to move the spoiler panel 20 to the storage position, and the routine proceeds to step 222.

In step 222, it is determined whether or not the vehicle speed S is 0 km / h. That is, it is determined whether or not the vehicle is stopped. If the vehicle is stopped, the determination is affirmative, and the process proceeds to step 224. In step 224,
The abnormality occurrence flag F is reset (0), and the series of routines ends. On the other hand, if the vehicle has not stopped, the determination is negative and the series of routines ends.

Thus, when the vehicle is accelerated during start-up or during traveling, even if the deployment instruction speed of 70 km / h, which exceeds the maximum acceleration _amax , is detected as a result of slipping of the wheels due to slippage, it is determined that an abnormality has occurred. Therefore, the spoiler panel 20 is not deployed. In addition, it is possible to accurately determine the vehicle speed at the time of starting or traveling, and to arrange the spoiler panel 20 at an appropriate position.

In the embodiment of the present invention, the vehicle speed at which the spoiler 10 starts moving to the deployed position is 70 km / h and the vehicle speed at which the spoiler 10 starts moving to the storage position is 50 km / h. May be.

Particularly, in the case of a two-wheel drive vehicle, the wheels are easy to idle, and in the case of an automatic vehicle, the wheels are easily rotated to a high speed rotation range by automatically shifting up. It is more effective when the invention is applied.

[0069]

As described above, according to the present invention, the spoiler can be arranged at an appropriate position based on the speed of the vehicle.

Therefore, since the spoiler does not expand even if the wheels spin, it is possible to prevent the spoiler from being damaged by an obstacle or the like, and the link portion from being deformed.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a spoiler according to an embodiment of the present invention.

FIG. 2A is a rear view of a spoiler according to an embodiment of the present invention, and FIG. 2B is an enlarged exploded view of a connecting portion of a link mechanism of the spoiler.

FIG. 3 is a side view of the spoiler showing a driving state of the spoiler according to the embodiment of the present invention.

FIG. 4 is a configuration diagram of a drive control device of the spoiler according to the embodiment of the present invention.

FIG. 5 is a schematic view of a cam plate according to the embodiment of the present invention.

FIG. 6 is a configuration diagram of a control unit according to the embodiment of the present invention.

FIG. 7 is a flowchart showing a spoiler moving routine according to the embodiment of the present invention.

FIG. 8 is a configuration diagram of a control unit according to another embodiment of the present invention.

FIG. 9 is a flowchart showing a spoiler moving routine according to another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 spoiler 12 motor 20 spoiler panel 36 control unit (prohibition control unit) 40 vehicle speed sensor (vehicle speed detection unit) 44 cam plate 52 vehicle speed calculation unit 54 time measurement unit 56 judgment unit 58 instruction unit 70 control unit (prohibition control unit) 72 vehicle speed Calculation part 74 Acceleration calculation part (acceleration calculation means)

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuki Okada 390 Umeda, Kosai-shi, Shizuoka Asumo Co., Ltd. (72) Inventor Keisuke Kiyose 2-1-1, Taoyuan, Ikeda-shi, Osaka Dai-Hatsu Kogyo Co., Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) B62D 31/00-39/00

Claims (3)

(57) [Claims] 1. A vehicle speed detecting means for detecting a vehicle speed of a vehicle based on a rotational speed of a front wheel or a rear wheel; and selectively moving the spoiler to two positions of a storage position or a deployed position based on the detected vehicle speed. Movement control means for causing the vehicle to detect idling of a front wheel or a rear wheel at the time of vehicle speed detection, and, based on a difference in speed detected by the idling, restricting movement of the spoiler to a deployed position. Characteristic drive control device for movable spoiler. 2. The deployment movement restricting means measures a time from a predetermined speed equal to or lower than a spoiler deployment speed including a stopped state of the vehicle to a vehicle speed at which the vehicle is moved to the deployment position, and preliminarily measures the capacity of the vehicle. 2. The movable spoiler according to claim 1, wherein the controller is a prohibition control unit that determines that an abnormality has occurred and prohibits the movement control unit from deploying the spoiler when the determination time is shorter than a determination reference time set based on the threshold value. Drive control device. 3. An acceleration calculating means for calculating an apparent acceleration based on the vehicle speed detected by the vehicle speed detecting means, wherein the deploying / moving limiting means determines the apparent acceleration and the vehicle performance in advance. Prohibition control means for prohibiting the movement of the spoiler by the movement control means by judging that an abnormality has occurred when the apparent acceleration exceeds the maximum acceleration. The drive control device for a movable spoiler according to claim 1, wherein: