KR19990027173U - Wiper Motor Operation Control - Google Patents

Abstract

The present invention detects the residual amount in the washer fluid tank and sprays the washer fluid only when the wiper actuator is pressed to operate the wiper in the presence of the detected residual amount, and simultaneously operates the wiper to prevent damage to the windshield glass and blades of the vehicle. A wiper motor operation control device for preventing a washer, the washer fluid remaining amount sensor 10 for detecting the remaining amount in the washer fluid tank, a washer fluid warning light 20 indicating the insufficient amount of the washer fluid and being lit by battery power, and a wiper The output is inverted by a wiper operation switch 30 for controlling the operation of the battery, and a signal input from the washer fluid remaining amount sensor 10, the washer fluid warning light 20, and the wiper operation switch 30. Comparing means 40 having a plurality of comparators, to read the signal output from the comparing means 40, Including the wiper control unit 50 programmed to control the operation of the drive motor 60 by the read data, the wiper is operated only when the washer fluid is injected, thereby preventing damage to the windshield glass. .

Description

CONTROL DEVICE OF WIPER MOTOR FOR A CAR

The present invention relates to a wiper motor operation control device, and more specifically, to detect the residual amount in the washer fluid tank, and to inject the washer fluid only when the wiper operation device is pressed to operate the wiper with the detected residual amount. The present invention relates to a wiper motor operation control device for operating a vehicle to prevent damage to windshield glass and blades of a vehicle.

In general, windshield glass of automobiles is equipped with wipers to secure the driver's field of view. This wiper allows the driver's watch to be secured by wiping the windshield glass with the vehicle's battery power to remove moisture and debris present in the windshield glass. It is designed to work.

The washer refers to a device for spraying the cleaning liquid to the window, and sends the cleaning liquid stored in the tank located inside the vehicle hood to the pump to spray the nozzle toward the window. In addition to the type of diffusion nozzles having a large number of injection points or a fan-shaped divergence in order to distribute the liquid evenly over the entire glass surface, there are various types of nozzles, such as installing nozzles on arms or blades.

A perspective view of a conventional vehicle wiper arm, a mounting portion, and a washer fluid injector, wherein a hood is provided with a washer fluid tank containing a washer fluid, and a hose through which the washer fluid passes is sprayed on the top of the washer fluid tank by the action of a pump. It is connected to the front window nozzle, and the front window nozzle is provided on both lower sides of the wiper.

As shown in FIG. 1, when the window wiper assembly is mounted on the vehicle, the drive shaft 200 of the motor mounted inside the vehicle is mounted to the location unit of the arm 300 to which the blade 100 is coupled through the mounting hole. Bolted together. In some vehicles, the wiper arm 300 cover is provided to prevent corrosion of the mounting part and to prevent foreign matter from penetrating the rotating part and improve the appearance. The support of the arm cover for this purpose is the wiper arm 300 and the location unit. It is made by pressing the fastening part of the cover to the hinge pin to couple the has a form covering the entire location unit.

The operation of this wiper is a first contact or second contact with a wiper drive switch (not shown) having an off contact, a first contact, and a second contact to spray washer fluid to remove moisture or foreign matter present in the windshield glass. When converted to, the wiper is driven to wipe off any moisture or foreign matter present in the windshield glass.

The wiper for the vehicle wipes off the foreign matter on the windshield of the vehicle, and has a high mode, a low mode, and an intermittent mode (MIST) for driving at a predetermined speed. By sweeping the surface of the windshield of the vehicle while reciprocating left and right by a certain angle at a constant speed.

However, such a conventional wiper for the vehicle has a problem that the windshield glass and the wiper blade 100 are damaged since the wiper blade 100 is operated when the wiper is operated even when there is no washer fluid, thereby wiping the windshield glass. It became.

Therefore, the present invention has been made in view of the above problems, and its purpose is to detect the residual amount in the washer fluid tank, and to spray the washer fluid only when the wiper operation switch is pressed to operate the wiper in the presence of the detected residual amount. At the same time to operate the wiper to provide a wiper motor operation control to prevent damage to the windshield glass and blades of the vehicle.

1 is a front view of a state in which the wiper is installed in a conventional vehicle

Figure 2 is a block diagram showing the configuration of the wiper operation control apparatus according to the present invention

<Description of the code | symbol about the principal part of drawing>

10: washer liquid level detection sensor 20: washer liquid warning light

30: wiper operation switch 40: comparison means

41, 42, 43: comparator 50: wiper control unit

60: drive motor

The object of the present invention, the washer fluid remaining amount sensor for detecting the remaining amount in the washer fluid tank, the washer fluid indicating the shortage of the washer fluid, and the warning light is turned on by the battery power, and controls the operation of the wiper, and energizes the battery power And a comparator having a plurality of comparators for inverting the output by a signal input from the washer fluid level sensor, the washer fluid warning light and the wiper operation switch, and reading the signal output from the comparator. Is achieved by a wiper motor operation control device, characterized in that it comprises a wiper control unit for controlling the operation of the drive motor based on the data. The comparison means is output from the washer fluid level sensor, the washer fluid warning light and the wiper operation switch. First comparator, second ratio to invert the signal And the third group is connected to the inverting input terminal and configured to invert the output, the wiper control unit of the comparator may be achieved by the wiper motor operation control unit, it characterized in that a program to control operation of the drive motor.

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

2 is a block diagram showing the configuration of a wiper motor operation control apparatus according to the present invention. Referring to FIG. 2, the remaining amount of the washer fluid tank is detected by the washer fluid remaining amount sensor 10, which detects the remaining amount of the washer fluid, and the detected signal is connected to the comparison means 40.

The washer fluid warning light 20 indicating the amount of the washer fluid is connected to the battery power, when the lack of the washer fluid is turned on by the battery power, and the lit power is input to the comparison means 40.

In addition, when the switch contact is shorted by battery power connected to one side of the wiper operation switch 30, the battery power is connected to the comparison means 40.

The comparing means 40 is formed of a first comparator 41, a second comparator 42, and a third comparator 43 so that the first comparator 41 has a signal detected by the washer fluid residual sensor 10 When the input, the output of the first comparator 41 is inverted and output. The second comparator 42 inverts the output by the lit signal when the washer fluid warning lamp 20 is turned on, and outputs the third comparator ( 43 outputs the output by inverting the output by a power source in which the contact of the wiper operation switch 30 is short-circuited and energized.

The signals output from the comparators 41, 42, 43 of the comparing means 40 are input to the wiper control unit 50, and the input signals are determined as shown in Table 1 below.

Wiper Control Unit Input Wiper Control Unit Output 1st comparator output 2nd comparator output 3rd comparator output LOW LOW LOW LOW LOW LOW HIGH HIGH LOW HIGH LOW LOW LOW HIGH HIGH HIGH HIGH LOW LOW LOW HIGH LOW HIGH LOW HIGH HIGH LOW LOW HIGH HIGH HIGH LOW

Accordingly, the wiper control unit 50 has a low signal when the output of the first comparator 41 is low (when there is a residual amount of washer fluid in the washer fluid tank) and a high signal when the output of the third comparator 43 is high (wiper operation). Outputs a control signal to operate the drive motor 60 in the contact shorted state of the switch 30).

The drive motor 60 is operated by the control signal output from the wiper control unit 50 to operate the wiper to wipe the foreign matter remaining in the windshield glass of the vehicle.

The operation of the wiper motor operation control device as described above is as follows. The residual amount in the washer fluid tank is sensed by the washer fluid remaining amount sensor 10, and the detected signal is input to the inverting input terminal (−) of the first comparator 41 of the comparing means 40.

When the washer fluid warning light 20 indicating the insufficient amount of the washer fluid is turned on, the lit signal of the warning light 20 is input to the inverting input terminal (-) of the second comparator 42 of the comparing means 40.

In addition, when the wiper operation switch 30 for controlling the operation of the wiper is pressed, the battery power connected to one side of the switch contact is energized, and the energized power is the inverting input terminal of the third comparator 43 of the comparison means 40. It is entered in (-).

Each non-inverting input terminal (+) of the comparing means 40 is grounded. Therefore, the outputs of the respective comparators 41, 42, 43 are inverted and output by the signals input to the respective comparators 41, 42, 43.

The signals output from the comparators 41, 42, and 43 are input to the wiper control unit 50, and the output signals are controlled by the input signals.

As shown in Table 1, the wiper control unit 50 has the remaining amount of washer fluid in the washer fluid tank and when the switch 30 is pressed to operate the wiper, the washer fluid is injected and the wiper is operated at this time. This will prevent damage to the shield glass and blades.

In addition, according to the present invention, the signal input from the wiper control unit 50 detects the residual amount in the washer fluid tank by the washer fluid remaining amount sensor 10 so that a signal containing a certain amount of the washer fluid is set by the comparison means 40. The inverting input terminal (-) of the second comparator 42 of the comparator 40 in the state in which the washer liquid warning light 20 which is input to the inverting input terminal (-) of the comparator 41 and indicating the insufficient amount of the washer liquid is turned off. Is entered.

In addition, the wiper control unit 50 is programmed to operate only when it is operated by pressing the wiper operation switch 30 for controlling the operation of the wiper, that is, when the washer fluid remaining in the washer fluid tank and the washer fluid warning light 20 are Washer fluid is sprayed only when the wiper operation switch 30 is pressed to operate the wiper in the unlit state, so that the operation of the wiper is operated when the washer fluid always has a certain amount of washer fluid, thereby preventing damage to the windshield glass and blades. Will be prevented.

As described above, the present invention relates to a wiper motor operation control device, and the wiper is operated only when the washer fluid is injected into the windshield glass of the vehicle only in the presence of the washer fluid in the washer fluid tank, thereby damaging the wiper blade and the windshield glass. It is a very useful design to prevent.

Claims (2)

Washer liquid residual amount sensor 10 for sensing the remaining amount in the washer liquid tank, A washer fluid warning light 20 indicating the insufficient amount of the washer fluid and being lit by battery power; A wiper operation switch 30 which controls an operation of a wiper and energizes the battery power; Comparing means (40) having a plurality of comparators to invert the output by the signal input from the washer liquid remaining amount sensor 10, washer liquid warning light 20 and the wiper operation switch 30, A wiper motor operation control, characterized in that it comprises a wiper control unit (50) programmed to read the signal output from the comparing means (40) and control the operation of the drive motor (60) by the read data. Device. The method of claim 1, wherein the comparison means 40 Reversal of the first comparator 41, the second comparator 42, and the third comparator 43 to invert the signals output from the washer fluid level sensor 10, washer fluid warning light 20, and the wiper operation switch 30. Wiper motor operation control device characterized in that it is connected to the input terminal and configured to invert the output