KR20030024204A - Method for operating windshield wiper - Google Patents

Abstract

PURPOSE: A method for operating a windshield wiper of vehicles is provided to completely remove the residual washer liquid from the windshield glass by operating the front wiper once again if the vehicle speed is maintained at a level lower than a predetermined level after stoppage of the front wiper. CONSTITUTION: A method for operating windshield wiper of vehicle comprises a first step of operating a rear wiper if a rear wiper switch is switched on; a second step of detecting whether a front wiper driving speed selection switch is switched on, if the rear wiper switch is switched off; a third step of detecting whether the other front wiper driving speed selection switch is switched on if the front wiper driving speed selection switch is switched on; a fourth step of detecting whether a front washer switch is switched on and operating only the front wiper if the front washer switch is switched off; a fifth step of detecting whether a vehicle speed is lower than a predetermined level while operating the front wiper if the front washer switch is switched on; a sixth step of operating the front wiper once again after elapse of a predetermined time since the ending of the front wiper operation if the vehicle speed is lower than the predetermined level; a seventh step of detecting the state of a reverse gear and operating the rear wiper if the reverse gear is in operation; an eighth step of detecting whether a rear wiper speed controller is turned on if the rear wiper switch is switched on; and a ninth step of operating only the rear wiper in a corresponding speed if the rear wiper speed controller is turned on, and operating the rear wiper in a continuous operation mode if the rear wiper speed controller is turned off.

Description

Method for operating windshield wiper of car

The present invention relates to a wiper operating apparatus and method of the vehicle, and more particularly, to improve the function of the front and rear wiper to increase the convenience and to invent a competitive advantage through performance improvement. .

In general, the wiper is a general term for wiping snow, rain, or muddy water on the rear windows, side windows, side mirrors, headlamps, etc., starting with the front and rear windshields of a car.

In general, in the front wiper system, in the case of the washer interlocking wiper currently applied to the front wiper and the shield wiper system, the wiper is configured to stop after 2-3 more operations after the washer liquid injection is finished.

In addition, the current rear wiper system applied to the RV vehicle is configured to operate simultaneously under the control of the wiper and the washer switch.

In other words, the front wiper / shield wiper system is interlocked with the washer and the wiper operation stops after 2-3 times after the spraying of the washer fluid is completed.However, the washer fluid remaining in the window / shield glass continues to flow down the windshield. There is a problem that the traces of the washer fluid remains.

Therefore, in order to erase it, the driver has to operate the wiper again.

In addition, the purpose of the rear wiper is to secure the rear clock, but unlike the windshield, when the switch is "on" and the wiper is operating, the driver is not well aware of the driver. Often the rear wiper is activated.

Therefore, the driver always keeps the rear wiper switch "off" and only operates the wiper intermittently when necessary, thereby failing to achieve the original purpose of the rear wiper.

The present invention has been made to solve the above-mentioned conventional problems, by integrating and controlling the front wiper and the rear wiper to ensure a clear view of the driver through the way that the residual washer fluid is completely removed during the washer interlocking control of the front wiper (Post-wiping function) The purpose of the present invention is to provide a wiper operation device and method of the car which can maximize the utilization of the rear wiper and the customer convenience through fine control of the rear wiper.

The object of the present invention described above, when the stopper after the washer switch input stops like a normal vehicle after 2-3 wiper operation, but if the vehicle speed is below a certain speed (that is, low speed), the windshield is automatically operated again after a few seconds Post-wiping (at the time of washer interlocking of front wiper) function to wipe the washer liquid which flows through, and the reverse gear input only when the front wiper switch (Hi / Low / Int. Switch) "on" (assuming in the rain) When the rear wiper function is "on" even if the rear wiper function (with the Int. Switch) is "on" and the rear wiper function (incl. Int. Switch) is connected to the reverse gear to automatically operate the rear wiper 2-3 times to secure the rear view. Only operate the rear wiper and leave the rear wiper switch "on" on a clear day to prevent rear wiper malfunction due to front wiper control Rear wiper control It can be achieved because having the ability to write.

Therefore, the post-wiping function completely removes the residual washer fluid from the windshield, ensuring a clear view of the driver. Also, due to the rainy weather, the rear wiper is automatically operated when the rear wiper is operated while the front wiper is in operation. In addition, it is possible to prevent the operation of the rear wiper itself even on a clear day due to the misoperation of the driver, so that the rear wiper can be more precisely controlled to maximize the utilization of the rear wiper and customer convenience. will be.

1 is a block diagram of an apparatus of the present invention.

2 is a flowchart for explaining the method of the present invention.

Explanation of symbols on main parts of drawing

1: vehicle speed sensor

2-4: Front wiper drive speed selection switch

5: volume for adjusting the front wiper speed

6: front washer switch 7: rear wiper switch

8: Rear wiper speed adjustment volume 9: Rear washer switch

10: reverse gear detection unit 11: intelligent wiper control unit

12: front wiper drive unit 13: front wiper motor

14: front wiper functional drive unit 15: rear wiper drive unit

16: rear wiper

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a block diagram of an apparatus of the present invention.

According to the present invention, there is provided an apparatus comprising: a vehicle speed sensor (1) for detecting a driving speed of an automobile by an electrical signal;

Three front wiper drive speed selection switches (2-4) installed so that a driver can select an arbitrary speed among the drive speeds (HI, LO, INT) of the front wiper;

A front wiper speed adjusting volume 5 installed to allow the driver to arbitrarily adjust the driving speed of the front wiper;

A front washer switch 6 installed to determine whether to wash the washer fluid on the windshield;

A rear wiper switch 7 installed to allow the driver to selectively operate the rear wiper;

A rear wiper speed adjusting volume 8 installed to allow the driver to arbitrarily adjust the driving speed of the rear wiper;

A rear washer switch 9 installed to determine whether or not to spray washer liquid onto the rear glass;

A reverse gear detection unit 10 for detecting whether the transmission gear of the vehicle is shifted to the reverse gear by an electric signal;

An intelligent wiper control unit 11 which receives the output signals of the respective units and performs a predetermined control program and outputs predetermined control signals to the front and rear wiper drivers 13 and 15 according to the result;

A front wiper driver 12 for driving the front wiper motor 13 and the washer fluid injection motor in response to an output signal of the intelligent wiper driver 11;

A front wiper functional drive unit (14) for further driving the front wiper motor (13) after a stop signal is output from the front wiper driver (12);

The rear wiper driver 15 driving the rear wiper motor 13 and the washer liquid injection motor in response to the output signal of the intelligent wiper driver 16 is characterized in that it is configured.

2 shows a flowchart for explaining the method of the present invention.

According to this, the intelligent wiper control unit 11 detects whether the rear wiper switch 7 is in the "on" state and, if the "on" state interlocks the washer fluid injection, operating the rear wiper;

Detecting whether any one of the front wiper drive speed selection switches (2) (3) is in the "on" state when the rear wiper switch (7) is in the "off" state as a result of the detection;

Detecting whether the front wiper drive speed selection switch (4) is in the "on" state if any one of the front wiper drive speed selection switches (2) (3) is in the "on" state as a result of the detection;

Detecting whether the front washer switch 6 is "on" when the front wiper drive speed selection switch 4 is also in the "on" state and operating only the front wiper when the "off" state is detected;

Detecting whether the vehicle speed is below a predetermined speed (for example, 40 km / h) while operating the front wiper in the interlocking mode with the washer when the front washer switch 6 is in the "on" state as a result of the detection;

Performing post wiping to operate the front wiper once more after a predetermined time (for example, 3 seconds) after the front wiper operation is terminated in the washer interlocking mode if the detected speed is less than the predetermined speed;

Detecting the state of the reverse gear when the front wiper wiper drive speed selection switch 4 is in the " off " state and then operating the rear wiper several times (e.g. 2-3 times) when the reverse gear is entered. Wow;

As a result of the above detection, it is detected whether the rear wiper switch 7 is "on" when the front wiper drive speed selection switch 4 is in the "off" state. Detecting whether the status is "on";

If the rear wiper speed control volume (8) as a result of the detection as described above, driving the rear wiper only at the corresponding speed if the "on" state, and operating the rear wiper in the continuous operation mode if the "off" state; .

Referring to the effect of the present invention made of such a configuration and steps as follows.

First, when the driver "turns on" the front washer switch 6 regardless of the three front wiper drive speed selection switches 2-4 and the volume 5 for the wiper speed adjustment, the intelligent wiper control 11 Since the front wiper driver 13 generates a predetermined control signal, the front wiper motor 12 and the washer fluid injection motor are driven at an appropriate speed, and the front wiper is driven at a predetermined speed while the washer fluid is injected onto the windshield. .

After that, when the front washer switch 6 is “off” and a stop signal is output from the front wiper driver 12, the front wiper motor 13 is driven by the front wiper functional drive 14 two to three times more. It is usually stopped afterwards.

However, in the intelligent wiper control unit 11 to which the present invention is applied, as soon as the wiper is stopped as described above, the input signal of the vehicle speed sensor 1 is immediately input and detects whether or not a predetermined vehicle speed (for example, 40 km / h) or less. If it is less than this, the washer fluid on the windshield may flow due to the low speed. Therefore, after a certain time (for example, 3 seconds), the front wiper is automatically operated once by outputting a driving signal to the front wiper drive unit 13 again. It will perform a post-wiping function.

In other words, when the vehicle speed is below a certain speed (for example, 40 km / h), the washer fluid pushed to the top of the windshield by the wiper flows down along the windshield again after the wiper stops. By wiping more washer fluid to wash down, the driver's watch for the front field of vision can be secured.

Here, the other front wiper control logic is the same as in the conventional general vehicle, so detailed description thereof will be omitted.

On the other hand, the front wiper is in operation due to rain because the driver "turns on" one of the front wiper switches (Hi / Low / Int. Switch), that is, the three front wiper drive speed selector switches 2-4. In the intelligent wiper control unit 11 to continue to detect the state of the reverse gear detection unit 10 to determine whether the car is going backward.

As such, when the driver determines that the gear is shifted backward to reverse the vehicle as a result of determining the output signal of the reverse gear detection unit 10, the intelligent wiper controller 11 transmits a predetermined control signal to the rear wiper driver 15. It is generated intermittently (about 2-3 times), so that the rear wiper motor 16 operates about 2-3 times to secure the driver's rear clock.

That is, in the present invention, only the front wiper switch (Hi / Low / Int. Switch) “on” (assuming in rainy weather) automatically operates the rear wiper two to three times when shifting to the reverse gear so that the driver's rear field of view is improved. Rear wiper operation is achieved by reversing the reverse gear.

However, the above function is performed when the reverse gear shift signal is input for more than 1 second (ie, less than 1 second), which is unnecessary even when the temporary shift lever passes the reverse gear position during shifting to another stage. This is to prevent the rear wiper from operating.

In addition, in the present invention, any one of the three front wiper drive speed selector switches 2-4 should be "on" while the rear wiper switch 7 or the rear wiper speed adjusting volume 8 is "on". The intelligent wiper control unit 11 is equipped with a front wiper interlocking rear wiper control function for operating the rear wiper, which is inadvertent for the driver to inadvertently drive the rear wiper switch (7) or the rear wiper speed due to a clear day. Since the front wiper is operated while the (8) is left in the "on" state, the rear wiper is also operated unnecessarily, that is, to prevent malfunction of the rear wiper.

However, when the rear wiper switch 7 is input in the front wiper-linked rear wiper control function as described above, the rear wiper is operated by the washer operation logic as in a general vehicle regardless of whether the front wiper is operated.

As described above, according to the present invention, since the post wiping function is provided to operate the front wiper one more time when the vehicle speed is below a certain speed after the front wiper is stopped, the residual washer fluid on the windshield can be completely removed. The driver can secure the driver's front view clearly, and if the driver reverses during the operation of the front wiper due to the rainy weather, the driver automatically activates the rear wiper and secures the rear view. When the wiper is in operation, the rear wiper can be prevented from operating in advance, so that the rear wiper can be more precisely controlled, and the utilization of the rear wiper can be maximized.

Claims (2)

A vehicle speed sensor 1 for detecting a driving speed of the vehicle with an electrical signal; Three front wiper drive speed selection switches (2-4) installed so that a driver can select an arbitrary speed among the drive speeds (HI, LO, INT) of the front wiper; A front wiper speed adjusting volume 5 installed to allow the driver to arbitrarily adjust the driving speed of the front wiper; A front washer switch 6 installed to determine whether to wash the washer fluid on the windshield; A rear wiper switch 7 installed to allow the driver to selectively operate the rear wiper; A rear wiper speed adjusting volume 8 installed to allow the driver to arbitrarily adjust the driving speed of the rear wiper; A rear washer switch 9 installed to determine whether or not to spray washer liquid onto the rear glass; A reverse gear detection unit 10 for detecting whether the transmission gear of the vehicle is shifted to the reverse gear by an electric signal; An intelligent wiper control unit 11 which receives the output signals of the respective units and performs a predetermined control program and outputs predetermined control signals to the front and rear wiper drivers 13 and 15 according to the result; A front wiper driver 12 for driving the front wiper motor 13 and the washer fluid injection motor in response to an output signal of the intelligent wiper driver 11; A front wiper functional drive unit (14) for further driving the front wiper motor (13) after a stop signal is output from the front wiper driver (12); And a rear wiper driver (15) for driving the rear wiper motor (13) and the washer fluid injection motor in response to the output signal of the intelligent wiper driver (16). Detecting whether the rear wiper switch 7 is in the "on" state by the intelligent wiper control unit 11 and operating the rear wiper when the washer fluid injection is interlocked when the "on" state is in the "on" state; Detecting whether any one of the front wiper drive speed selection switches (2) (3) is in the "on" state when the rear wiper switch (7) is in the "off" state as a result of the detection; Detecting whether the front wiper drive speed selection switch (4) is in the "on" state if any one of the front wiper drive speed selection switches (2) (3) is in the "on" state as a result of the detection; Detecting whether the front washer switch 6 is "on" when the front wiper drive speed selection switch 4 is also in the "on" state, and operating only the front wiper when the "off" state is detected; Detecting whether the vehicle speed is below a predetermined speed (for example, 40 km / h) while operating the front wiper in the interlocking mode with the washer when the front washer switch 6 is in the "on" state as a result of the detection; Performing post wiping to operate the front wiper once more after a predetermined time (for example, 3 seconds) after the front wiper operation is terminated in the washer interlocking mode if the detected speed is less than the predetermined speed; Detecting the state of the reverse gear when the front wiper wiper drive speed selection switch 4 is in the " off " state and then operating the rear wiper several times (e.g. 2-3 times) when the reverse gear is entered. Wow; As a result of the above detection, it is detected whether the rear wiper switch 7 is "on" when the front wiper drive speed selection switch 4 is in the "off" state. Detecting whether the status is "on"; When the rear wiper speed control volume 8 is in the " on " state, the rear wiper is driven at a corresponding speed; and in the " off " state, the rear wiper is operated in a continuous operation mode. Car wiper actuator.